mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 14:45:29 +00:00
7419257b87
--HG-- rename : dom/events/nsContentEventHandler.cpp => dom/events/ContentEventHandler.cpp rename : dom/events/nsContentEventHandler.h => dom/events/ContentEventHandler.h
6021 lines
204 KiB
C++
6021 lines
204 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 sw=2 et tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/Attributes.h"
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#include "mozilla/IMEStateManager.h"
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#include "mozilla/MiscEvents.h"
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#include "mozilla/MathAlgorithms.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/TextEvents.h"
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#include "mozilla/TouchEvents.h"
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#include "mozilla/dom/Event.h"
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#include "mozilla/dom/TabParent.h"
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#include "mozilla/dom/UIEvent.h"
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#include "ContentEventHandler.h"
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#include "nsCOMPtr.h"
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#include "nsEventStateManager.h"
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#include "nsFocusManager.h"
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#include "nsIContent.h"
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#include "nsINodeInfo.h"
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#include "nsIDocument.h"
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#include "nsIFrame.h"
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#include "nsIWidget.h"
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#include "nsPresContext.h"
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#include "nsIPresShell.h"
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#include "nsGkAtoms.h"
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#include "nsIFormControl.h"
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#include "nsIComboboxControlFrame.h"
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#include "nsIScrollableFrame.h"
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#include "nsIDOMHTMLElement.h"
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#include "nsIDOMXULControlElement.h"
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#include "nsNameSpaceManager.h"
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#include "nsIBaseWindow.h"
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#include "nsISelection.h"
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#include "nsITextControlElement.h"
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#include "nsFrameSelection.h"
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#include "nsPIDOMWindow.h"
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#include "nsPIWindowRoot.h"
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#include "nsIWebNavigation.h"
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#include "nsIContentViewer.h"
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#include "nsFrameManager.h"
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#include "nsIDOMXULElement.h"
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#include "nsIDOMKeyEvent.h"
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#include "nsIObserverService.h"
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#include "nsIDocShell.h"
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#include "nsIMarkupDocumentViewer.h"
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#include "nsIDOMWheelEvent.h"
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#include "nsIDOMDragEvent.h"
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#include "nsIDOMUIEvent.h"
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#include "nsIMozBrowserFrame.h"
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#include "nsSubDocumentFrame.h"
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#include "nsLayoutUtils.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsUnicharUtils.h"
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#include "nsContentUtils.h"
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#include "imgIContainer.h"
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#include "nsIProperties.h"
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#include "nsISupportsPrimitives.h"
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#include "nsEventDispatcher.h"
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#include "nsServiceManagerUtils.h"
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#include "nsITimer.h"
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#include "nsFontMetrics.h"
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#include "nsIDOMXULDocument.h"
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#include "nsIDragService.h"
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#include "nsIDragSession.h"
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#include "mozilla/dom/DataTransfer.h"
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#include "nsContentAreaDragDrop.h"
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#ifdef MOZ_XUL
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#include "nsTreeBodyFrame.h"
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#endif
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#include "nsIController.h"
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#include "nsICommandParams.h"
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#include "mozilla/Services.h"
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#include "mozilla/dom/HTMLLabelElement.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/LookAndFeel.h"
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#include "GeckoProfiler.h"
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#include "Units.h"
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#ifdef XP_MACOSX
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#import <ApplicationServices/ApplicationServices.h>
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#endif
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using namespace mozilla;
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using namespace mozilla::dom;
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//#define DEBUG_DOCSHELL_FOCUS
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#define NS_USER_INTERACTION_INTERVAL 5000 // ms
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static const LayoutDeviceIntPoint kInvalidRefPoint = LayoutDeviceIntPoint(-1,-1);
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static uint32_t sESMInstanceCount = 0;
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int32_t nsEventStateManager::sUserInputEventDepth = 0;
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bool nsEventStateManager::sNormalLMouseEventInProcess = false;
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nsEventStateManager* nsEventStateManager::sActiveESM = nullptr;
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nsIDocument* nsEventStateManager::sMouseOverDocument = nullptr;
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nsWeakFrame nsEventStateManager::sLastDragOverFrame = nullptr;
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LayoutDeviceIntPoint nsEventStateManager::sLastRefPoint = kInvalidRefPoint;
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nsIntPoint nsEventStateManager::sLastScreenPoint = nsIntPoint(0, 0);
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LayoutDeviceIntPoint nsEventStateManager::sSynthCenteringPoint = kInvalidRefPoint;
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CSSIntPoint nsEventStateManager::sLastClientPoint = CSSIntPoint(0, 0);
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bool nsEventStateManager::sIsPointerLocked = false;
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// Reference to the pointer locked element.
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nsWeakPtr nsEventStateManager::sPointerLockedElement;
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// Reference to the document which requested pointer lock.
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nsWeakPtr nsEventStateManager::sPointerLockedDoc;
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nsCOMPtr<nsIContent> nsEventStateManager::sDragOverContent = nullptr;
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static uint32_t gMouseOrKeyboardEventCounter = 0;
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static nsITimer* gUserInteractionTimer = nullptr;
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static nsITimerCallback* gUserInteractionTimerCallback = nullptr;
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TimeStamp nsEventStateManager::sHandlingInputStart;
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nsEventStateManager::WheelPrefs*
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nsEventStateManager::WheelPrefs::sInstance = nullptr;
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nsEventStateManager::DeltaAccumulator*
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nsEventStateManager::DeltaAccumulator::sInstance = nullptr;
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static inline int32_t
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RoundDown(double aDouble)
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{
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return (aDouble > 0) ? static_cast<int32_t>(floor(aDouble)) :
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static_cast<int32_t>(ceil(aDouble));
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}
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static inline bool
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IsMouseEventReal(WidgetEvent* aEvent)
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{
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NS_ABORT_IF_FALSE(aEvent->AsMouseEvent(), "Not a mouse event");
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// Return true if not synthesized.
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return aEvent->AsMouseEvent()->reason == WidgetMouseEvent::eReal;
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}
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#ifdef DEBUG_DOCSHELL_FOCUS
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static void
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PrintDocTree(nsIDocShellTreeItem* aParentItem, int aLevel)
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{
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for (int32_t i=0;i<aLevel;i++) printf(" ");
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int32_t childWebshellCount;
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aParentItem->GetChildCount(&childWebshellCount);
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nsCOMPtr<nsIDocShell> parentAsDocShell(do_QueryInterface(aParentItem));
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int32_t type = aParentItem->ItemType();
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nsCOMPtr<nsIPresShell> presShell = parentAsDocShell->GetPresShell();
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nsRefPtr<nsPresContext> presContext;
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parentAsDocShell->GetPresContext(getter_AddRefs(presContext));
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nsCOMPtr<nsIContentViewer> cv;
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parentAsDocShell->GetContentViewer(getter_AddRefs(cv));
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nsCOMPtr<nsIDOMDocument> domDoc;
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if (cv)
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cv->GetDOMDocument(getter_AddRefs(domDoc));
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nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
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nsCOMPtr<nsIDOMWindow> domwin = doc ? doc->GetWindow() : nullptr;
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nsIURI* uri = doc ? doc->GetDocumentURI() : nullptr;
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printf("DS %p Type %s Cnt %d Doc %p DW %p EM %p%c",
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static_cast<void*>(parentAsDocShell.get()),
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type==nsIDocShellTreeItem::typeChrome?"Chrome":"Content",
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childWebshellCount, static_cast<void*>(doc.get()),
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static_cast<void*>(domwin.get()),
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static_cast<void*>(presContext ? presContext->EventStateManager() : nullptr),
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uri ? ' ' : '\n');
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if (uri) {
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nsAutoCString spec;
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uri->GetSpec(spec);
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printf("\"%s\"\n", spec.get());
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}
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if (childWebshellCount > 0) {
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for (int32_t i = 0; i < childWebshellCount; i++) {
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nsCOMPtr<nsIDocShellTreeItem> child;
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aParentItem->GetChildAt(i, getter_AddRefs(child));
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PrintDocTree(child, aLevel + 1);
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}
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}
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}
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static void
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PrintDocTreeAll(nsIDocShellTreeItem* aItem)
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{
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nsCOMPtr<nsIDocShellTreeItem> item = aItem;
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for(;;) {
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nsCOMPtr<nsIDocShellTreeItem> parent;
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item->GetParent(getter_AddRefs(parent));
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if (!parent)
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break;
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item = parent;
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}
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PrintDocTree(item, 0);
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}
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#endif
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class nsUITimerCallback MOZ_FINAL : public nsITimerCallback
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{
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public:
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nsUITimerCallback() : mPreviousCount(0) {}
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NS_DECL_ISUPPORTS
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NS_DECL_NSITIMERCALLBACK
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private:
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uint32_t mPreviousCount;
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};
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NS_IMPL_ISUPPORTS1(nsUITimerCallback, nsITimerCallback)
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// If aTimer is nullptr, this method always sends "user-interaction-inactive"
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// notification.
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NS_IMETHODIMP
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nsUITimerCallback::Notify(nsITimer* aTimer)
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{
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nsCOMPtr<nsIObserverService> obs =
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mozilla::services::GetObserverService();
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if (!obs)
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return NS_ERROR_FAILURE;
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if ((gMouseOrKeyboardEventCounter == mPreviousCount) || !aTimer) {
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gMouseOrKeyboardEventCounter = 0;
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obs->NotifyObservers(nullptr, "user-interaction-inactive", nullptr);
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if (gUserInteractionTimer) {
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gUserInteractionTimer->Cancel();
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NS_RELEASE(gUserInteractionTimer);
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}
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} else {
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obs->NotifyObservers(nullptr, "user-interaction-active", nullptr);
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nsEventStateManager::UpdateUserActivityTimer();
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}
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mPreviousCount = gMouseOrKeyboardEventCounter;
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return NS_OK;
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}
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// mask values for ui.key.chromeAccess and ui.key.contentAccess
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#define NS_MODIFIER_SHIFT 1
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#define NS_MODIFIER_CONTROL 2
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#define NS_MODIFIER_ALT 4
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#define NS_MODIFIER_META 8
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#define NS_MODIFIER_OS 16
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static nsIDocument *
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GetDocumentFromWindow(nsIDOMWindow *aWindow)
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{
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nsCOMPtr<nsPIDOMWindow> win = do_QueryInterface(aWindow);
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return win ? win->GetExtantDoc() : nullptr;
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}
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struct DeltaValues
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{
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DeltaValues() : deltaX(0.0), deltaY(0.0) {}
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DeltaValues(double aDeltaX, double aDeltaY) :
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deltaX(aDeltaX), deltaY(aDeltaY)
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{
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}
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explicit DeltaValues(WidgetWheelEvent* aEvent) :
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deltaX(aEvent->deltaX), deltaY(aEvent->deltaY)
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{
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}
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double deltaX;
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double deltaY;
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};
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/******************************************************************/
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/* nsScrollbarsForWheel */
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/******************************************************************/
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class nsScrollbarsForWheel {
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public:
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static void PrepareToScrollText(nsEventStateManager* aESM,
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nsIFrame* aTargetFrame,
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WidgetWheelEvent* aEvent);
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static void SetActiveScrollTarget(nsIScrollableFrame* aScrollTarget);
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// Hide all scrollbars (both mActiveOwner's and mActivatedScrollTargets')
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static void MayInactivate();
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static void Inactivate();
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static bool IsActive();
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static void OwnWheelTransaction(bool aOwn);
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protected:
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static const size_t kNumberOfTargets = 4;
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static const DeltaValues directions[kNumberOfTargets];
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static nsWeakFrame sActiveOwner;
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static nsWeakFrame sActivatedScrollTargets[kNumberOfTargets];
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static bool sHadWheelStart;
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static bool sOwnWheelTransaction;
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/**
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* These two methods are called upon NS_WHEEL_START/NS_WHEEL_STOP events
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* to show/hide the right scrollbars.
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*/
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static void TemporarilyActivateAllPossibleScrollTargets(
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nsEventStateManager* aESM,
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nsIFrame* aTargetFrame,
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WidgetWheelEvent* aEvent);
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static void DeactivateAllTemporarilyActivatedScrollTargets();
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};
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const DeltaValues nsScrollbarsForWheel::directions[kNumberOfTargets] = {
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DeltaValues(-1, 0), DeltaValues(+1, 0), DeltaValues(0, -1), DeltaValues(0, +1)
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};
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nsWeakFrame nsScrollbarsForWheel::sActiveOwner = nullptr;
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nsWeakFrame nsScrollbarsForWheel::sActivatedScrollTargets[kNumberOfTargets] = {
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nullptr, nullptr, nullptr, nullptr
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};
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bool nsScrollbarsForWheel::sHadWheelStart = false;
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bool nsScrollbarsForWheel::sOwnWheelTransaction = false;
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/******************************************************************/
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/* nsMouseWheelTransaction */
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/******************************************************************/
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class nsMouseWheelTransaction {
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public:
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static nsIFrame* GetTargetFrame() { return sTargetFrame; }
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static void BeginTransaction(nsIFrame* aTargetFrame,
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WidgetWheelEvent* aEvent);
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// Be careful, UpdateTransaction may fire a DOM event, therefore, the target
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// frame might be destroyed in the event handler.
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static bool UpdateTransaction(WidgetWheelEvent* aEvent);
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static void MayEndTransaction();
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static void EndTransaction();
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static void OnEvent(WidgetEvent* aEvent);
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static void Shutdown();
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static uint32_t GetTimeoutTime();
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static void OwnScrollbars(bool aOwn);
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static DeltaValues AccelerateWheelDelta(WidgetWheelEvent* aEvent,
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bool aAllowScrollSpeedOverride);
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enum {
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kScrollSeriesTimeout = 80
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};
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protected:
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static nsIntPoint GetScreenPoint(WidgetGUIEvent* aEvent);
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static void OnFailToScrollTarget();
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static void OnTimeout(nsITimer *aTimer, void *aClosure);
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static void SetTimeout();
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static uint32_t GetIgnoreMoveDelayTime();
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static int32_t GetAccelerationStart();
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static int32_t GetAccelerationFactor();
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static DeltaValues OverrideSystemScrollSpeed(WidgetWheelEvent* aEvent);
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static double ComputeAcceleratedWheelDelta(double aDelta, int32_t aFactor);
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static bool OutOfTime(uint32_t aBaseTime, uint32_t aThreshold);
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static nsWeakFrame sTargetFrame;
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static uint32_t sTime; // in milliseconds
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static uint32_t sMouseMoved; // in milliseconds
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static nsITimer* sTimer;
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static int32_t sScrollSeriesCounter;
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static bool sOwnScrollbars;
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};
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nsWeakFrame nsMouseWheelTransaction::sTargetFrame(nullptr);
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uint32_t nsMouseWheelTransaction::sTime = 0;
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uint32_t nsMouseWheelTransaction::sMouseMoved = 0;
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nsITimer* nsMouseWheelTransaction::sTimer = nullptr;
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int32_t nsMouseWheelTransaction::sScrollSeriesCounter = 0;
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bool nsMouseWheelTransaction::sOwnScrollbars = false;
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static bool
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CanScrollInRange(nscoord aMin, nscoord aValue, nscoord aMax, double aDirection)
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{
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return aDirection > 0.0 ? aValue < static_cast<double>(aMax) :
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static_cast<double>(aMin) < aValue;
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}
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static bool
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CanScrollOn(nsIScrollableFrame* aScrollFrame, double aDirectionX, double aDirectionY)
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{
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MOZ_ASSERT(aScrollFrame);
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NS_ASSERTION(aDirectionX || aDirectionY,
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"One of the delta values must be non-zero at least");
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nsPoint scrollPt = aScrollFrame->GetScrollPosition();
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nsRect scrollRange = aScrollFrame->GetScrollRange();
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uint32_t directions = aScrollFrame->GetPerceivedScrollingDirections();
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return (aDirectionX && (directions & nsIScrollableFrame::HORIZONTAL) &&
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CanScrollInRange(scrollRange.x, scrollPt.x, scrollRange.XMost(), aDirectionX)) ||
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(aDirectionY && (directions & nsIScrollableFrame::VERTICAL) &&
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CanScrollInRange(scrollRange.y, scrollPt.y, scrollRange.YMost(), aDirectionY));
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}
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bool
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nsMouseWheelTransaction::OutOfTime(uint32_t aBaseTime, uint32_t aThreshold)
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{
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uint32_t now = PR_IntervalToMilliseconds(PR_IntervalNow());
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return (now - aBaseTime > aThreshold);
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}
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void
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nsMouseWheelTransaction::OwnScrollbars(bool aOwn)
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{
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sOwnScrollbars = aOwn;
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}
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void
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nsMouseWheelTransaction::BeginTransaction(nsIFrame* aTargetFrame,
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WidgetWheelEvent* aEvent)
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{
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NS_ASSERTION(!sTargetFrame, "previous transaction is not finished!");
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MOZ_ASSERT(aEvent->message == NS_WHEEL_WHEEL,
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"Transaction must be started with a wheel event");
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nsScrollbarsForWheel::OwnWheelTransaction(false);
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sTargetFrame = aTargetFrame;
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sScrollSeriesCounter = 0;
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if (!UpdateTransaction(aEvent)) {
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NS_ERROR("BeginTransaction is called even cannot scroll the frame");
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EndTransaction();
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}
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}
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bool
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nsMouseWheelTransaction::UpdateTransaction(WidgetWheelEvent* aEvent)
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{
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nsIScrollableFrame* sf = GetTargetFrame()->GetScrollTargetFrame();
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NS_ENSURE_TRUE(sf, false);
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if (!CanScrollOn(sf, aEvent->deltaX, aEvent->deltaY)) {
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OnFailToScrollTarget();
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// We should not modify the transaction state when the view will not be
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// scrolled actually.
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return false;
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}
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SetTimeout();
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if (sScrollSeriesCounter != 0 && OutOfTime(sTime, kScrollSeriesTimeout))
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sScrollSeriesCounter = 0;
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sScrollSeriesCounter++;
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// We should use current time instead of WidgetEvent.time.
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// 1. Some events doesn't have the correct creation time.
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// 2. If the computer runs slowly by other processes eating the CPU resource,
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// the event creation time doesn't keep real time.
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sTime = PR_IntervalToMilliseconds(PR_IntervalNow());
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sMouseMoved = 0;
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return true;
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}
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void
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nsMouseWheelTransaction::MayEndTransaction()
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{
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if (!sOwnScrollbars && nsScrollbarsForWheel::IsActive()) {
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nsScrollbarsForWheel::OwnWheelTransaction(true);
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} else {
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EndTransaction();
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}
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}
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void
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nsMouseWheelTransaction::EndTransaction()
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{
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if (sTimer)
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sTimer->Cancel();
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sTargetFrame = nullptr;
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sScrollSeriesCounter = 0;
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if (sOwnScrollbars) {
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sOwnScrollbars = false;
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nsScrollbarsForWheel::OwnWheelTransaction(false);
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nsScrollbarsForWheel::Inactivate();
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}
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}
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void
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nsMouseWheelTransaction::OnEvent(WidgetEvent* aEvent)
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{
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if (!sTargetFrame)
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return;
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if (OutOfTime(sTime, GetTimeoutTime())) {
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// Even if the scroll event which is handled after timeout, but onTimeout
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// was not fired by timer, then the scroll event will scroll old frame,
|
|
// therefore, we should call OnTimeout here and ensure to finish the old
|
|
// transaction.
|
|
OnTimeout(nullptr, nullptr);
|
|
return;
|
|
}
|
|
|
|
switch (aEvent->message) {
|
|
case NS_WHEEL_WHEEL:
|
|
if (sMouseMoved != 0 &&
|
|
OutOfTime(sMouseMoved, GetIgnoreMoveDelayTime())) {
|
|
// Terminate the current mousewheel transaction if the mouse moved more
|
|
// than ignoremovedelay milliseconds ago
|
|
EndTransaction();
|
|
}
|
|
return;
|
|
case NS_MOUSE_MOVE:
|
|
case NS_DRAGDROP_OVER:
|
|
if (IsMouseEventReal(aEvent)) {
|
|
// If the cursor is moving to be outside the frame,
|
|
// terminate the scrollwheel transaction.
|
|
nsIntPoint pt = GetScreenPoint(aEvent->AsGUIEvent());
|
|
nsIntRect r = sTargetFrame->GetScreenRectExternal();
|
|
if (!r.Contains(pt)) {
|
|
EndTransaction();
|
|
return;
|
|
}
|
|
|
|
// If the cursor is moving inside the frame, and it is less than
|
|
// ignoremovedelay milliseconds since the last scroll operation, ignore
|
|
// the mouse move; otherwise, record the current mouse move time to be
|
|
// checked later
|
|
if (OutOfTime(sTime, GetIgnoreMoveDelayTime())) {
|
|
if (sMouseMoved == 0)
|
|
sMouseMoved = PR_IntervalToMilliseconds(PR_IntervalNow());
|
|
}
|
|
}
|
|
return;
|
|
case NS_KEY_PRESS:
|
|
case NS_KEY_UP:
|
|
case NS_KEY_DOWN:
|
|
case NS_MOUSE_BUTTON_UP:
|
|
case NS_MOUSE_BUTTON_DOWN:
|
|
case NS_MOUSE_DOUBLECLICK:
|
|
case NS_MOUSE_CLICK:
|
|
case NS_CONTEXTMENU:
|
|
case NS_DRAGDROP_DROP:
|
|
EndTransaction();
|
|
return;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsMouseWheelTransaction::Shutdown()
|
|
{
|
|
NS_IF_RELEASE(sTimer);
|
|
}
|
|
|
|
void
|
|
nsMouseWheelTransaction::OnFailToScrollTarget()
|
|
{
|
|
NS_PRECONDITION(sTargetFrame, "We don't have mouse scrolling transaction");
|
|
|
|
if (Preferences::GetBool("test.mousescroll", false)) {
|
|
// This event is used for automated tests, see bug 442774.
|
|
nsContentUtils::DispatchTrustedEvent(
|
|
sTargetFrame->GetContent()->OwnerDoc(),
|
|
sTargetFrame->GetContent(),
|
|
NS_LITERAL_STRING("MozMouseScrollFailed"),
|
|
true, true);
|
|
}
|
|
// The target frame might be destroyed in the event handler, at that time,
|
|
// we need to finish the current transaction
|
|
if (!sTargetFrame) {
|
|
EndTransaction();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsMouseWheelTransaction::OnTimeout(nsITimer* aTimer, void* aClosure)
|
|
{
|
|
if (!sTargetFrame) {
|
|
// The transaction target was destroyed already
|
|
EndTransaction();
|
|
return;
|
|
}
|
|
// Store the sTargetFrame, the variable becomes null in EndTransaction.
|
|
nsIFrame* frame = sTargetFrame;
|
|
// We need to finish current transaction before DOM event firing. Because
|
|
// the next DOM event might create strange situation for us.
|
|
MayEndTransaction();
|
|
|
|
if (Preferences::GetBool("test.mousescroll", false)) {
|
|
// This event is used for automated tests, see bug 442774.
|
|
nsContentUtils::DispatchTrustedEvent(
|
|
frame->GetContent()->OwnerDoc(),
|
|
frame->GetContent(),
|
|
NS_LITERAL_STRING("MozMouseScrollTransactionTimeout"),
|
|
true, true);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsMouseWheelTransaction::SetTimeout()
|
|
{
|
|
if (!sTimer) {
|
|
nsCOMPtr<nsITimer> timer = do_CreateInstance(NS_TIMER_CONTRACTID);
|
|
if (!timer)
|
|
return;
|
|
timer.swap(sTimer);
|
|
}
|
|
sTimer->Cancel();
|
|
#ifdef DEBUG
|
|
nsresult rv =
|
|
#endif
|
|
sTimer->InitWithFuncCallback(OnTimeout, nullptr, GetTimeoutTime(),
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
NS_WARN_IF_FALSE(NS_SUCCEEDED(rv), "nsITimer::InitWithFuncCallback failed");
|
|
}
|
|
|
|
nsIntPoint
|
|
nsMouseWheelTransaction::GetScreenPoint(WidgetGUIEvent* aEvent)
|
|
{
|
|
NS_ASSERTION(aEvent, "aEvent is null");
|
|
NS_ASSERTION(aEvent->widget, "aEvent-widget is null");
|
|
return LayoutDeviceIntPoint::ToUntyped(aEvent->refPoint) +
|
|
aEvent->widget->WidgetToScreenOffset();
|
|
}
|
|
|
|
uint32_t
|
|
nsMouseWheelTransaction::GetTimeoutTime()
|
|
{
|
|
return Preferences::GetUint("mousewheel.transaction.timeout", 1500);
|
|
}
|
|
|
|
uint32_t
|
|
nsMouseWheelTransaction::GetIgnoreMoveDelayTime()
|
|
{
|
|
return Preferences::GetUint("mousewheel.transaction.ignoremovedelay", 100);
|
|
}
|
|
|
|
DeltaValues
|
|
nsMouseWheelTransaction::AccelerateWheelDelta(WidgetWheelEvent* aEvent,
|
|
bool aAllowScrollSpeedOverride)
|
|
{
|
|
DeltaValues result(aEvent);
|
|
|
|
// Don't accelerate the delta values if the event isn't line scrolling.
|
|
if (aEvent->deltaMode != nsIDOMWheelEvent::DOM_DELTA_LINE) {
|
|
return result;
|
|
}
|
|
|
|
if (aAllowScrollSpeedOverride) {
|
|
result = OverrideSystemScrollSpeed(aEvent);
|
|
}
|
|
|
|
// Accelerate by the sScrollSeriesCounter
|
|
int32_t start = GetAccelerationStart();
|
|
if (start >= 0 && sScrollSeriesCounter >= start) {
|
|
int32_t factor = GetAccelerationFactor();
|
|
if (factor > 0) {
|
|
result.deltaX = ComputeAcceleratedWheelDelta(result.deltaX, factor);
|
|
result.deltaY = ComputeAcceleratedWheelDelta(result.deltaY, factor);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
double
|
|
nsMouseWheelTransaction::ComputeAcceleratedWheelDelta(double aDelta,
|
|
int32_t aFactor)
|
|
{
|
|
if (aDelta == 0.0) {
|
|
return 0;
|
|
}
|
|
|
|
return (aDelta * sScrollSeriesCounter * (double)aFactor / 10);
|
|
}
|
|
|
|
int32_t
|
|
nsMouseWheelTransaction::GetAccelerationStart()
|
|
{
|
|
return Preferences::GetInt("mousewheel.acceleration.start", -1);
|
|
}
|
|
|
|
int32_t
|
|
nsMouseWheelTransaction::GetAccelerationFactor()
|
|
{
|
|
return Preferences::GetInt("mousewheel.acceleration.factor", -1);
|
|
}
|
|
|
|
DeltaValues
|
|
nsMouseWheelTransaction::OverrideSystemScrollSpeed(WidgetWheelEvent* aEvent)
|
|
{
|
|
MOZ_ASSERT(sTargetFrame, "We don't have mouse scrolling transaction");
|
|
MOZ_ASSERT(aEvent->deltaMode == nsIDOMWheelEvent::DOM_DELTA_LINE);
|
|
|
|
// If the event doesn't scroll to both X and Y, we don't need to do anything
|
|
// here.
|
|
if (!aEvent->deltaX && !aEvent->deltaY) {
|
|
return DeltaValues(aEvent);
|
|
}
|
|
|
|
// We shouldn't override the scrolling speed on non root scroll frame.
|
|
if (sTargetFrame !=
|
|
sTargetFrame->PresContext()->PresShell()->GetRootScrollFrame()) {
|
|
return DeltaValues(aEvent);
|
|
}
|
|
|
|
// Compute the overridden speed to nsIWidget. The widget can check the
|
|
// conditions (e.g., checking the prefs, and also whether the user customized
|
|
// the system settings of the mouse wheel scrolling or not), and can limit
|
|
// the speed for preventing the unexpected high speed scrolling.
|
|
nsCOMPtr<nsIWidget> widget(sTargetFrame->GetNearestWidget());
|
|
NS_ENSURE_TRUE(widget, DeltaValues(aEvent));
|
|
DeltaValues overriddenDeltaValues(0.0, 0.0);
|
|
nsresult rv =
|
|
widget->OverrideSystemMouseScrollSpeed(aEvent->deltaX, aEvent->deltaY,
|
|
overriddenDeltaValues.deltaX,
|
|
overriddenDeltaValues.deltaY);
|
|
return NS_FAILED(rv) ? DeltaValues(aEvent) : overriddenDeltaValues;
|
|
}
|
|
|
|
/******************************************************************/
|
|
/* nsScrollbarsForWheel */
|
|
/******************************************************************/
|
|
|
|
void
|
|
nsScrollbarsForWheel::PrepareToScrollText(
|
|
nsEventStateManager* aESM,
|
|
nsIFrame* aTargetFrame,
|
|
WidgetWheelEvent* aEvent)
|
|
{
|
|
if (aEvent->message == NS_WHEEL_START) {
|
|
nsMouseWheelTransaction::OwnScrollbars(false);
|
|
if (!IsActive()) {
|
|
TemporarilyActivateAllPossibleScrollTargets(aESM, aTargetFrame, aEvent);
|
|
sHadWheelStart = true;
|
|
}
|
|
} else {
|
|
DeactivateAllTemporarilyActivatedScrollTargets();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsScrollbarsForWheel::SetActiveScrollTarget(nsIScrollableFrame* aScrollTarget)
|
|
{
|
|
if (!sHadWheelStart) {
|
|
return;
|
|
}
|
|
nsIScrollbarOwner* scrollbarOwner = do_QueryFrame(aScrollTarget);
|
|
if (!scrollbarOwner) {
|
|
return;
|
|
}
|
|
sHadWheelStart = false;
|
|
sActiveOwner = do_QueryFrame(aScrollTarget);
|
|
scrollbarOwner->ScrollbarActivityStarted();
|
|
}
|
|
|
|
void
|
|
nsScrollbarsForWheel::MayInactivate()
|
|
{
|
|
if (!sOwnWheelTransaction && nsMouseWheelTransaction::GetTargetFrame()) {
|
|
nsMouseWheelTransaction::OwnScrollbars(true);
|
|
} else {
|
|
Inactivate();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsScrollbarsForWheel::Inactivate()
|
|
{
|
|
nsIScrollbarOwner* scrollbarOwner = do_QueryFrame(sActiveOwner);
|
|
if (scrollbarOwner) {
|
|
scrollbarOwner->ScrollbarActivityStopped();
|
|
}
|
|
sActiveOwner = nullptr;
|
|
DeactivateAllTemporarilyActivatedScrollTargets();
|
|
if (sOwnWheelTransaction) {
|
|
sOwnWheelTransaction = false;
|
|
nsMouseWheelTransaction::OwnScrollbars(false);
|
|
nsMouseWheelTransaction::EndTransaction();
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsScrollbarsForWheel::IsActive()
|
|
{
|
|
if (sActiveOwner) {
|
|
return true;
|
|
}
|
|
for (size_t i = 0; i < kNumberOfTargets; ++i) {
|
|
if (sActivatedScrollTargets[i]) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
nsScrollbarsForWheel::OwnWheelTransaction(bool aOwn)
|
|
{
|
|
sOwnWheelTransaction = aOwn;
|
|
}
|
|
|
|
void
|
|
nsScrollbarsForWheel::TemporarilyActivateAllPossibleScrollTargets(
|
|
nsEventStateManager* aESM,
|
|
nsIFrame* aTargetFrame,
|
|
WidgetWheelEvent* aEvent)
|
|
{
|
|
for (size_t i = 0; i < kNumberOfTargets; i++) {
|
|
const DeltaValues *dir = &directions[i];
|
|
nsWeakFrame* scrollTarget = &sActivatedScrollTargets[i];
|
|
MOZ_ASSERT(!*scrollTarget, "scroll target still temporarily activated!");
|
|
nsIScrollableFrame* target =
|
|
aESM->ComputeScrollTarget(aTargetFrame, dir->deltaX, dir->deltaY, aEvent,
|
|
nsEventStateManager::COMPUTE_DEFAULT_ACTION_TARGET);
|
|
if (target) {
|
|
nsIScrollbarOwner* scrollbarOwner = do_QueryFrame(target);
|
|
if (scrollbarOwner) {
|
|
nsIFrame* targetFrame = do_QueryFrame(target);
|
|
*scrollTarget = targetFrame;
|
|
scrollbarOwner->ScrollbarActivityStarted();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsScrollbarsForWheel::DeactivateAllTemporarilyActivatedScrollTargets()
|
|
{
|
|
for (size_t i = 0; i < kNumberOfTargets; i++) {
|
|
nsWeakFrame* scrollTarget = &sActivatedScrollTargets[i];
|
|
if (*scrollTarget) {
|
|
nsIScrollbarOwner* scrollbarOwner = do_QueryFrame(*scrollTarget);
|
|
if (scrollbarOwner) {
|
|
scrollbarOwner->ScrollbarActivityStopped();
|
|
}
|
|
*scrollTarget = nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
/******************************************************************/
|
|
/* OverOutElementsWrapper */
|
|
/******************************************************************/
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_3(OverOutElementsWrapper,
|
|
mLastOverElement,
|
|
mFirstOverEventElement,
|
|
mFirstOutEventElement)
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(OverOutElementsWrapper)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(OverOutElementsWrapper)
|
|
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(OverOutElementsWrapper)
|
|
NS_INTERFACE_MAP_ENTRY(nsISupports)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
/******************************************************************/
|
|
|
|
/******************************************************************/
|
|
/* nsEventStateManager */
|
|
/******************************************************************/
|
|
|
|
nsEventStateManager::nsEventStateManager()
|
|
: mLockCursor(0),
|
|
mPreLockPoint(0,0),
|
|
mCurrentTarget(nullptr),
|
|
// init d&d gesture state machine variables
|
|
mGestureDownPoint(0,0),
|
|
mPresContext(nullptr),
|
|
mLClickCount(0),
|
|
mMClickCount(0),
|
|
mRClickCount(0),
|
|
m_haveShutdown(false)
|
|
{
|
|
if (sESMInstanceCount == 0) {
|
|
gUserInteractionTimerCallback = new nsUITimerCallback();
|
|
if (gUserInteractionTimerCallback)
|
|
NS_ADDREF(gUserInteractionTimerCallback);
|
|
UpdateUserActivityTimer();
|
|
}
|
|
++sESMInstanceCount;
|
|
}
|
|
|
|
nsresult
|
|
nsEventStateManager::UpdateUserActivityTimer(void)
|
|
{
|
|
if (!gUserInteractionTimerCallback)
|
|
return NS_OK;
|
|
|
|
if (!gUserInteractionTimer)
|
|
CallCreateInstance("@mozilla.org/timer;1", &gUserInteractionTimer);
|
|
|
|
if (gUserInteractionTimer) {
|
|
gUserInteractionTimer->InitWithCallback(gUserInteractionTimerCallback,
|
|
NS_USER_INTERACTION_INTERVAL,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEventStateManager::Init()
|
|
{
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
if (!observerService)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
observerService->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, true);
|
|
|
|
if (sESMInstanceCount == 1) {
|
|
Prefs::Init();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsEventStateManager::~nsEventStateManager()
|
|
{
|
|
if (sActiveESM == this) {
|
|
sActiveESM = nullptr;
|
|
}
|
|
if (Prefs::ClickHoldContextMenu())
|
|
KillClickHoldTimer();
|
|
|
|
if (mDocument == sMouseOverDocument)
|
|
sMouseOverDocument = nullptr;
|
|
|
|
--sESMInstanceCount;
|
|
if(sESMInstanceCount == 0) {
|
|
nsMouseWheelTransaction::Shutdown();
|
|
if (gUserInteractionTimerCallback) {
|
|
gUserInteractionTimerCallback->Notify(nullptr);
|
|
NS_RELEASE(gUserInteractionTimerCallback);
|
|
}
|
|
if (gUserInteractionTimer) {
|
|
gUserInteractionTimer->Cancel();
|
|
NS_RELEASE(gUserInteractionTimer);
|
|
}
|
|
Prefs::Shutdown();
|
|
WheelPrefs::Shutdown();
|
|
DeltaAccumulator::Shutdown();
|
|
}
|
|
|
|
if (sDragOverContent && sDragOverContent->OwnerDoc() == mDocument) {
|
|
sDragOverContent = nullptr;
|
|
}
|
|
|
|
if (!m_haveShutdown) {
|
|
Shutdown();
|
|
|
|
// Don't remove from Observer service in Shutdown because Shutdown also
|
|
// gets called from xpcom shutdown observer. And we don't want to remove
|
|
// from the service in that case.
|
|
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
if (observerService) {
|
|
observerService->RemoveObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
nsresult
|
|
nsEventStateManager::Shutdown()
|
|
{
|
|
m_haveShutdown = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEventStateManager::Observe(nsISupports *aSubject,
|
|
const char *aTopic,
|
|
const char16_t *someData)
|
|
{
|
|
if (!nsCRT::strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID)) {
|
|
Shutdown();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsEventStateManager)
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIObserver)
|
|
NS_INTERFACE_MAP_ENTRY(nsIObserver)
|
|
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsEventStateManager)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsEventStateManager)
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_16(nsEventStateManager,
|
|
mCurrentTargetContent,
|
|
mGestureDownContent,
|
|
mGestureDownFrameOwner,
|
|
mLastLeftMouseDownContent,
|
|
mLastLeftMouseDownContentParent,
|
|
mLastMiddleMouseDownContent,
|
|
mLastMiddleMouseDownContentParent,
|
|
mLastRightMouseDownContent,
|
|
mLastRightMouseDownContentParent,
|
|
mActiveContent,
|
|
mHoverContent,
|
|
mURLTargetContent,
|
|
mMouseEnterLeaveHelper,
|
|
mPointersEnterLeaveHelper,
|
|
mDocument,
|
|
mAccessKeys)
|
|
|
|
nsresult
|
|
nsEventStateManager::PreHandleEvent(nsPresContext* aPresContext,
|
|
WidgetEvent* aEvent,
|
|
nsIFrame* aTargetFrame,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aStatus);
|
|
NS_ENSURE_ARG(aPresContext);
|
|
if (!aEvent) {
|
|
NS_ERROR("aEvent is null. This should never happen.");
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
mCurrentTarget = aTargetFrame;
|
|
mCurrentTargetContent = nullptr;
|
|
|
|
// Focus events don't necessarily need a frame.
|
|
if (NS_EVENT_NEEDS_FRAME(aEvent)) {
|
|
NS_ASSERTION(mCurrentTarget, "mCurrentTarget is null. this should not happen. see bug #13007");
|
|
if (!mCurrentTarget) return NS_ERROR_NULL_POINTER;
|
|
}
|
|
#ifdef DEBUG
|
|
if (aEvent->HasDragEventMessage() && sIsPointerLocked) {
|
|
NS_ASSERTION(sIsPointerLocked,
|
|
"sIsPointerLocked is true. Drag events should be suppressed when the pointer is locked.");
|
|
}
|
|
#endif
|
|
// Store last known screenPoint and clientPoint so pointer lock
|
|
// can use these values as constants.
|
|
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
|
|
if (aEvent->mFlags.mIsTrusted &&
|
|
((mouseEvent && IsMouseEventReal(mouseEvent)) ||
|
|
aEvent->eventStructType == NS_WHEEL_EVENT) &&
|
|
!sIsPointerLocked) {
|
|
sLastScreenPoint =
|
|
UIEvent::CalculateScreenPoint(aPresContext, aEvent);
|
|
sLastClientPoint =
|
|
UIEvent::CalculateClientPoint(aPresContext, aEvent, nullptr);
|
|
}
|
|
|
|
// Do not take account NS_MOUSE_ENTER/EXIT so that loading a page
|
|
// when user is not active doesn't change the state to active.
|
|
if (aEvent->mFlags.mIsTrusted &&
|
|
((mouseEvent && IsMouseEventReal(mouseEvent) &&
|
|
mouseEvent->message != NS_MOUSE_ENTER &&
|
|
mouseEvent->message != NS_MOUSE_EXIT) ||
|
|
aEvent->eventStructType == NS_WHEEL_EVENT ||
|
|
aEvent->eventStructType == NS_KEY_EVENT)) {
|
|
if (gMouseOrKeyboardEventCounter == 0) {
|
|
nsCOMPtr<nsIObserverService> obs =
|
|
mozilla::services::GetObserverService();
|
|
if (obs) {
|
|
obs->NotifyObservers(nullptr, "user-interaction-active", nullptr);
|
|
UpdateUserActivityTimer();
|
|
}
|
|
}
|
|
++gMouseOrKeyboardEventCounter;
|
|
}
|
|
|
|
*aStatus = nsEventStatus_eIgnore;
|
|
|
|
nsMouseWheelTransaction::OnEvent(aEvent);
|
|
|
|
switch (aEvent->message) {
|
|
case NS_MOUSE_BUTTON_DOWN: {
|
|
switch (mouseEvent->button) {
|
|
case WidgetMouseEvent::eLeftButton:
|
|
BeginTrackingDragGesture(aPresContext, mouseEvent, aTargetFrame);
|
|
mLClickCount = mouseEvent->clickCount;
|
|
SetClickCount(aPresContext, mouseEvent, aStatus);
|
|
sNormalLMouseEventInProcess = true;
|
|
break;
|
|
case WidgetMouseEvent::eMiddleButton:
|
|
mMClickCount = mouseEvent->clickCount;
|
|
SetClickCount(aPresContext, mouseEvent, aStatus);
|
|
break;
|
|
case WidgetMouseEvent::eRightButton:
|
|
mRClickCount = mouseEvent->clickCount;
|
|
SetClickCount(aPresContext, mouseEvent, aStatus);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case NS_MOUSE_BUTTON_UP: {
|
|
switch (mouseEvent->button) {
|
|
case WidgetMouseEvent::eLeftButton:
|
|
if (Prefs::ClickHoldContextMenu()) {
|
|
KillClickHoldTimer();
|
|
}
|
|
StopTrackingDragGesture();
|
|
sNormalLMouseEventInProcess = false;
|
|
// then fall through...
|
|
case WidgetMouseEvent::eRightButton:
|
|
case WidgetMouseEvent::eMiddleButton:
|
|
SetClickCount(aPresContext, mouseEvent, aStatus);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case NS_POINTER_CANCEL:
|
|
{
|
|
GenerateMouseEnterExit(mouseEvent);
|
|
break;
|
|
}
|
|
case NS_MOUSE_EXIT:
|
|
// If the event is not a top-level window exit, then it's not
|
|
// really an exit --- we may have traversed widget boundaries but
|
|
// we're still in our toplevel window.
|
|
if (mouseEvent->exit != WidgetMouseEvent::eTopLevel) {
|
|
// Treat it as a synthetic move so we don't generate spurious
|
|
// "exit" or "move" events. Any necessary "out" or "over" events
|
|
// will be generated by GenerateMouseEnterExit
|
|
mouseEvent->message = NS_MOUSE_MOVE;
|
|
mouseEvent->reason = WidgetMouseEvent::eSynthesized;
|
|
// then fall through...
|
|
} else {
|
|
GenerateMouseEnterExit(mouseEvent);
|
|
//This is a window level mouse exit event and should stop here
|
|
aEvent->message = 0;
|
|
break;
|
|
}
|
|
case NS_MOUSE_MOVE:
|
|
case NS_POINTER_DOWN:
|
|
case NS_POINTER_MOVE: {
|
|
// on the Mac, GenerateDragGesture() may not return until the drag
|
|
// has completed and so |aTargetFrame| may have been deleted (moving
|
|
// a bookmark, for example). If this is the case, however, we know
|
|
// that ClearFrameRefs() has been called and it cleared out
|
|
// |mCurrentTarget|. As a result, we should pass |mCurrentTarget|
|
|
// into UpdateCursor().
|
|
GenerateDragGesture(aPresContext, mouseEvent);
|
|
UpdateCursor(aPresContext, aEvent, mCurrentTarget, aStatus);
|
|
GenerateMouseEnterExit(mouseEvent);
|
|
// Flush pending layout changes, so that later mouse move events
|
|
// will go to the right nodes.
|
|
FlushPendingEvents(aPresContext);
|
|
break;
|
|
}
|
|
case NS_DRAGDROP_GESTURE:
|
|
if (Prefs::ClickHoldContextMenu()) {
|
|
// an external drag gesture event came in, not generated internally
|
|
// by Gecko. Make sure we get rid of the click-hold timer.
|
|
KillClickHoldTimer();
|
|
}
|
|
break;
|
|
case NS_DRAGDROP_OVER:
|
|
// NS_DRAGDROP_DROP is fired before NS_DRAGDROP_DRAGDROP so send
|
|
// the enter/exit events before NS_DRAGDROP_DROP.
|
|
GenerateDragDropEnterExit(aPresContext, aEvent->AsDragEvent());
|
|
break;
|
|
|
|
case NS_KEY_PRESS:
|
|
{
|
|
WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
|
|
|
|
int32_t modifierMask = 0;
|
|
if (keyEvent->IsShift())
|
|
modifierMask |= NS_MODIFIER_SHIFT;
|
|
if (keyEvent->IsControl())
|
|
modifierMask |= NS_MODIFIER_CONTROL;
|
|
if (keyEvent->IsAlt())
|
|
modifierMask |= NS_MODIFIER_ALT;
|
|
if (keyEvent->IsMeta())
|
|
modifierMask |= NS_MODIFIER_META;
|
|
if (keyEvent->IsOS())
|
|
modifierMask |= NS_MODIFIER_OS;
|
|
|
|
// Prevent keyboard scrolling while an accesskey modifier is in use.
|
|
if (modifierMask &&
|
|
(modifierMask == Prefs::ChromeAccessModifierMask() ||
|
|
modifierMask == Prefs::ContentAccessModifierMask())) {
|
|
HandleAccessKey(aPresContext, keyEvent, aStatus, nullptr,
|
|
eAccessKeyProcessingNormal, modifierMask);
|
|
}
|
|
}
|
|
// then fall through...
|
|
case NS_KEY_DOWN:
|
|
case NS_KEY_UP:
|
|
{
|
|
nsIContent* content = GetFocusedContent();
|
|
if (content)
|
|
mCurrentTargetContent = content;
|
|
}
|
|
break;
|
|
case NS_WHEEL_WHEEL:
|
|
case NS_WHEEL_START:
|
|
case NS_WHEEL_STOP:
|
|
{
|
|
NS_ASSERTION(aEvent->mFlags.mIsTrusted,
|
|
"Untrusted wheel event shouldn't be here");
|
|
|
|
nsIContent* content = GetFocusedContent();
|
|
if (content) {
|
|
mCurrentTargetContent = content;
|
|
}
|
|
|
|
if (aEvent->message != NS_WHEEL_WHEEL) {
|
|
break;
|
|
}
|
|
|
|
WidgetWheelEvent* wheelEvent = aEvent->AsWheelEvent();
|
|
WheelPrefs::GetInstance()->ApplyUserPrefsToDelta(wheelEvent);
|
|
|
|
// If we won't dispatch a DOM event for this event, nothing to do anymore.
|
|
if (!wheelEvent->IsAllowedToDispatchDOMEvent()) {
|
|
break;
|
|
}
|
|
|
|
// Init lineOrPageDelta values for line scroll events for some devices
|
|
// on some platforms which might dispatch wheel events which don't have
|
|
// lineOrPageDelta values. And also, if delta values are customized by
|
|
// prefs, this recomputes them.
|
|
DeltaAccumulator::GetInstance()->
|
|
InitLineOrPageDelta(aTargetFrame, this, wheelEvent);
|
|
}
|
|
break;
|
|
case NS_QUERY_SELECTED_TEXT:
|
|
DoQuerySelectedText(aEvent->AsQueryContentEvent());
|
|
break;
|
|
case NS_QUERY_TEXT_CONTENT:
|
|
{
|
|
if (RemoteQueryContentEvent(aEvent)) {
|
|
break;
|
|
}
|
|
ContentEventHandler handler(mPresContext);
|
|
handler.OnQueryTextContent(aEvent->AsQueryContentEvent());
|
|
}
|
|
break;
|
|
case NS_QUERY_CARET_RECT:
|
|
{
|
|
if (RemoteQueryContentEvent(aEvent)) {
|
|
break;
|
|
}
|
|
ContentEventHandler handler(mPresContext);
|
|
handler.OnQueryCaretRect(aEvent->AsQueryContentEvent());
|
|
}
|
|
break;
|
|
case NS_QUERY_TEXT_RECT:
|
|
{
|
|
if (RemoteQueryContentEvent(aEvent)) {
|
|
break;
|
|
}
|
|
ContentEventHandler handler(mPresContext);
|
|
handler.OnQueryTextRect(aEvent->AsQueryContentEvent());
|
|
}
|
|
break;
|
|
case NS_QUERY_EDITOR_RECT:
|
|
{
|
|
// XXX remote event
|
|
ContentEventHandler handler(mPresContext);
|
|
handler.OnQueryEditorRect(aEvent->AsQueryContentEvent());
|
|
}
|
|
break;
|
|
case NS_QUERY_CONTENT_STATE:
|
|
{
|
|
// XXX remote event
|
|
ContentEventHandler handler(mPresContext);
|
|
handler.OnQueryContentState(aEvent->AsQueryContentEvent());
|
|
}
|
|
break;
|
|
case NS_QUERY_SELECTION_AS_TRANSFERABLE:
|
|
{
|
|
// XXX remote event
|
|
ContentEventHandler handler(mPresContext);
|
|
handler.OnQuerySelectionAsTransferable(aEvent->AsQueryContentEvent());
|
|
}
|
|
break;
|
|
case NS_QUERY_CHARACTER_AT_POINT:
|
|
{
|
|
// XXX remote event
|
|
ContentEventHandler handler(mPresContext);
|
|
handler.OnQueryCharacterAtPoint(aEvent->AsQueryContentEvent());
|
|
}
|
|
break;
|
|
case NS_QUERY_DOM_WIDGET_HITTEST:
|
|
{
|
|
// XXX remote event
|
|
ContentEventHandler handler(mPresContext);
|
|
handler.OnQueryDOMWidgetHittest(aEvent->AsQueryContentEvent());
|
|
}
|
|
break;
|
|
case NS_SELECTION_SET:
|
|
{
|
|
WidgetSelectionEvent* selectionEvent = aEvent->AsSelectionEvent();
|
|
if (IsTargetCrossProcess(selectionEvent)) {
|
|
// Will not be handled locally, remote the event
|
|
if (GetCrossProcessTarget()->SendSelectionEvent(*selectionEvent)) {
|
|
selectionEvent->mSucceeded = true;
|
|
}
|
|
break;
|
|
}
|
|
ContentEventHandler handler(mPresContext);
|
|
handler.OnSelectionEvent(selectionEvent);
|
|
}
|
|
break;
|
|
case NS_CONTENT_COMMAND_CUT:
|
|
case NS_CONTENT_COMMAND_COPY:
|
|
case NS_CONTENT_COMMAND_PASTE:
|
|
case NS_CONTENT_COMMAND_DELETE:
|
|
case NS_CONTENT_COMMAND_UNDO:
|
|
case NS_CONTENT_COMMAND_REDO:
|
|
case NS_CONTENT_COMMAND_PASTE_TRANSFERABLE:
|
|
{
|
|
DoContentCommandEvent(aEvent->AsContentCommandEvent());
|
|
}
|
|
break;
|
|
case NS_CONTENT_COMMAND_SCROLL:
|
|
{
|
|
DoContentCommandScrollEvent(aEvent->AsContentCommandEvent());
|
|
}
|
|
break;
|
|
case NS_TEXT_TEXT:
|
|
{
|
|
WidgetTextEvent *textEvent = aEvent->AsTextEvent();
|
|
if (IsTargetCrossProcess(textEvent)) {
|
|
// Will not be handled locally, remote the event
|
|
if (GetCrossProcessTarget()->SendTextEvent(*textEvent)) {
|
|
// Cancel local dispatching
|
|
aEvent->mFlags.mPropagationStopped = true;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case NS_COMPOSITION_START:
|
|
if (aEvent->mFlags.mIsTrusted) {
|
|
// If the event is trusted event, set the selected text to data of
|
|
// composition event.
|
|
WidgetCompositionEvent* compositionEvent = aEvent->AsCompositionEvent();
|
|
WidgetQueryContentEvent selectedText(true, NS_QUERY_SELECTED_TEXT,
|
|
compositionEvent->widget);
|
|
DoQuerySelectedText(&selectedText);
|
|
NS_ASSERTION(selectedText.mSucceeded, "Failed to get selected text");
|
|
compositionEvent->data = selectedText.mReply.mString;
|
|
}
|
|
// through to compositionend handling
|
|
case NS_COMPOSITION_UPDATE:
|
|
case NS_COMPOSITION_END:
|
|
{
|
|
WidgetCompositionEvent* compositionEvent = aEvent->AsCompositionEvent();
|
|
if (IsTargetCrossProcess(compositionEvent)) {
|
|
// Will not be handled locally, remote the event
|
|
if (GetCrossProcessTarget()->SendCompositionEvent(*compositionEvent)) {
|
|
// Cancel local dispatching
|
|
aEvent->mFlags.mPropagationStopped = true;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// static
|
|
int32_t
|
|
nsEventStateManager::GetAccessModifierMaskFor(nsISupports* aDocShell)
|
|
{
|
|
nsCOMPtr<nsIDocShellTreeItem> treeItem(do_QueryInterface(aDocShell));
|
|
if (!treeItem)
|
|
return -1; // invalid modifier
|
|
|
|
switch (treeItem->ItemType()) {
|
|
case nsIDocShellTreeItem::typeChrome:
|
|
return Prefs::ChromeAccessModifierMask();
|
|
|
|
case nsIDocShellTreeItem::typeContent:
|
|
return Prefs::ContentAccessModifierMask();
|
|
|
|
default:
|
|
return -1; // invalid modifier
|
|
}
|
|
}
|
|
|
|
static bool
|
|
IsAccessKeyTarget(nsIContent* aContent, nsIFrame* aFrame, nsAString& aKey)
|
|
{
|
|
// Use GetAttr because we want Unicode case=insensitive matching
|
|
// XXXbz shouldn't this be case-sensitive, per spec?
|
|
nsString contentKey;
|
|
if (!aContent->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey, contentKey) ||
|
|
!contentKey.Equals(aKey, nsCaseInsensitiveStringComparator()))
|
|
return false;
|
|
|
|
nsCOMPtr<nsIDOMXULDocument> xulDoc =
|
|
do_QueryInterface(aContent->OwnerDoc());
|
|
if (!xulDoc && !aContent->IsXUL())
|
|
return true;
|
|
|
|
// For XUL we do visibility checks.
|
|
if (!aFrame)
|
|
return false;
|
|
|
|
if (aFrame->IsFocusable())
|
|
return true;
|
|
|
|
if (!aFrame->IsVisibleConsideringAncestors())
|
|
return false;
|
|
|
|
// XUL controls can be activated.
|
|
nsCOMPtr<nsIDOMXULControlElement> control(do_QueryInterface(aContent));
|
|
if (control)
|
|
return true;
|
|
|
|
if (aContent->IsHTML()) {
|
|
nsIAtom* tag = aContent->Tag();
|
|
|
|
// HTML area, label and legend elements are never focusable, so
|
|
// we need to check for them explicitly before giving up.
|
|
if (tag == nsGkAtoms::area ||
|
|
tag == nsGkAtoms::label ||
|
|
tag == nsGkAtoms::legend)
|
|
return true;
|
|
|
|
} else if (aContent->IsXUL()) {
|
|
// XUL label elements are never focusable, so we need to check for them
|
|
// explicitly before giving up.
|
|
if (aContent->Tag() == nsGkAtoms::label)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsEventStateManager::ExecuteAccessKey(nsTArray<uint32_t>& aAccessCharCodes,
|
|
bool aIsTrustedEvent)
|
|
{
|
|
int32_t count, start = -1;
|
|
nsIContent* focusedContent = GetFocusedContent();
|
|
if (focusedContent) {
|
|
start = mAccessKeys.IndexOf(focusedContent);
|
|
if (start == -1 && focusedContent->GetBindingParent())
|
|
start = mAccessKeys.IndexOf(focusedContent->GetBindingParent());
|
|
}
|
|
nsIContent *content;
|
|
nsIFrame *frame;
|
|
int32_t length = mAccessKeys.Count();
|
|
for (uint32_t i = 0; i < aAccessCharCodes.Length(); ++i) {
|
|
uint32_t ch = aAccessCharCodes[i];
|
|
nsAutoString accessKey;
|
|
AppendUCS4ToUTF16(ch, accessKey);
|
|
for (count = 1; count <= length; ++count) {
|
|
content = mAccessKeys[(start + count) % length];
|
|
frame = content->GetPrimaryFrame();
|
|
if (IsAccessKeyTarget(content, frame, accessKey)) {
|
|
bool shouldActivate = Prefs::KeyCausesActivation();
|
|
while (shouldActivate && ++count <= length) {
|
|
nsIContent *oc = mAccessKeys[(start + count) % length];
|
|
nsIFrame *of = oc->GetPrimaryFrame();
|
|
if (IsAccessKeyTarget(oc, of, accessKey))
|
|
shouldActivate = false;
|
|
}
|
|
if (shouldActivate)
|
|
content->PerformAccesskey(shouldActivate, aIsTrustedEvent);
|
|
else {
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm) {
|
|
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(content);
|
|
fm->SetFocus(element, nsIFocusManager::FLAG_BYKEY);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsEventStateManager::GetAccessKeyLabelPrefix(nsAString& aPrefix)
|
|
{
|
|
aPrefix.Truncate();
|
|
nsAutoString separator, modifierText;
|
|
nsContentUtils::GetModifierSeparatorText(separator);
|
|
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainerWeak();
|
|
int32_t modifierMask = GetAccessModifierMaskFor(container);
|
|
|
|
if (modifierMask & NS_MODIFIER_CONTROL) {
|
|
nsContentUtils::GetControlText(modifierText);
|
|
aPrefix.Append(modifierText + separator);
|
|
}
|
|
if (modifierMask & NS_MODIFIER_META) {
|
|
nsContentUtils::GetMetaText(modifierText);
|
|
aPrefix.Append(modifierText + separator);
|
|
}
|
|
if (modifierMask & NS_MODIFIER_OS) {
|
|
nsContentUtils::GetOSText(modifierText);
|
|
aPrefix.Append(modifierText + separator);
|
|
}
|
|
if (modifierMask & NS_MODIFIER_ALT) {
|
|
nsContentUtils::GetAltText(modifierText);
|
|
aPrefix.Append(modifierText + separator);
|
|
}
|
|
if (modifierMask & NS_MODIFIER_SHIFT) {
|
|
nsContentUtils::GetShiftText(modifierText);
|
|
aPrefix.Append(modifierText + separator);
|
|
}
|
|
return !aPrefix.IsEmpty();
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::HandleAccessKey(nsPresContext* aPresContext,
|
|
WidgetKeyboardEvent* aEvent,
|
|
nsEventStatus* aStatus,
|
|
nsIDocShellTreeItem* aBubbledFrom,
|
|
ProcessingAccessKeyState aAccessKeyState,
|
|
int32_t aModifierMask)
|
|
{
|
|
nsCOMPtr<nsIDocShell> docShell = aPresContext->GetDocShell();
|
|
|
|
// Alt or other accesskey modifier is down, we may need to do an accesskey
|
|
if (mAccessKeys.Count() > 0 &&
|
|
aModifierMask == GetAccessModifierMaskFor(docShell)) {
|
|
// Someone registered an accesskey. Find and activate it.
|
|
nsAutoTArray<uint32_t, 10> accessCharCodes;
|
|
nsContentUtils::GetAccessKeyCandidates(aEvent, accessCharCodes);
|
|
if (ExecuteAccessKey(accessCharCodes, aEvent->mFlags.mIsTrusted)) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
return;
|
|
}
|
|
}
|
|
|
|
// after the local accesskey handling
|
|
if (nsEventStatus_eConsumeNoDefault != *aStatus) {
|
|
// checking all sub docshells
|
|
|
|
if (!docShell) {
|
|
NS_WARNING("no docShellTreeNode for presContext");
|
|
return;
|
|
}
|
|
|
|
int32_t childCount;
|
|
docShell->GetChildCount(&childCount);
|
|
for (int32_t counter = 0; counter < childCount; counter++) {
|
|
// Not processing the child which bubbles up the handling
|
|
nsCOMPtr<nsIDocShellTreeItem> subShellItem;
|
|
docShell->GetChildAt(counter, getter_AddRefs(subShellItem));
|
|
if (aAccessKeyState == eAccessKeyProcessingUp &&
|
|
subShellItem == aBubbledFrom)
|
|
continue;
|
|
|
|
nsCOMPtr<nsIDocShell> subDS = do_QueryInterface(subShellItem);
|
|
if (subDS && IsShellVisible(subDS)) {
|
|
nsCOMPtr<nsIPresShell> subPS = subDS->GetPresShell();
|
|
|
|
// Docshells need not have a presshell (eg. display:none
|
|
// iframes, docshells in transition between documents, etc).
|
|
if (!subPS) {
|
|
// Oh, well. Just move on to the next child
|
|
continue;
|
|
}
|
|
|
|
nsPresContext *subPC = subPS->GetPresContext();
|
|
|
|
nsEventStateManager* esm =
|
|
static_cast<nsEventStateManager *>(subPC->EventStateManager());
|
|
|
|
if (esm)
|
|
esm->HandleAccessKey(subPC, aEvent, aStatus, nullptr,
|
|
eAccessKeyProcessingDown, aModifierMask);
|
|
|
|
if (nsEventStatus_eConsumeNoDefault == *aStatus)
|
|
break;
|
|
}
|
|
}
|
|
}// if end . checking all sub docshell ends here.
|
|
|
|
// bubble up the process to the parent docshell if necessary
|
|
if (eAccessKeyProcessingDown != aAccessKeyState && nsEventStatus_eConsumeNoDefault != *aStatus) {
|
|
if (!docShell) {
|
|
NS_WARNING("no docShellTreeItem for presContext");
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> parentShellItem;
|
|
docShell->GetParent(getter_AddRefs(parentShellItem));
|
|
nsCOMPtr<nsIDocShell> parentDS = do_QueryInterface(parentShellItem);
|
|
if (parentDS) {
|
|
nsCOMPtr<nsIPresShell> parentPS = parentDS->GetPresShell();
|
|
NS_ASSERTION(parentPS, "Our PresShell exists but the parent's does not?");
|
|
|
|
nsPresContext *parentPC = parentPS->GetPresContext();
|
|
NS_ASSERTION(parentPC, "PresShell without PresContext");
|
|
|
|
nsEventStateManager* esm =
|
|
static_cast<nsEventStateManager *>(parentPC->EventStateManager());
|
|
|
|
if (esm)
|
|
esm->HandleAccessKey(parentPC, aEvent, aStatus, docShell,
|
|
eAccessKeyProcessingUp, aModifierMask);
|
|
}
|
|
}// if end. bubble up process
|
|
}// end of HandleAccessKey
|
|
|
|
bool
|
|
nsEventStateManager::DispatchCrossProcessEvent(WidgetEvent* aEvent,
|
|
nsFrameLoader* aFrameLoader,
|
|
nsEventStatus *aStatus) {
|
|
PBrowserParent* remoteBrowser = aFrameLoader->GetRemoteBrowser();
|
|
TabParent* remote = static_cast<TabParent*>(remoteBrowser);
|
|
if (!remote) {
|
|
return false;
|
|
}
|
|
|
|
switch (aEvent->eventStructType) {
|
|
case NS_MOUSE_EVENT: {
|
|
return remote->SendRealMouseEvent(*aEvent->AsMouseEvent());
|
|
}
|
|
case NS_KEY_EVENT: {
|
|
return remote->SendRealKeyEvent(*aEvent->AsKeyboardEvent());
|
|
}
|
|
case NS_WHEEL_EVENT: {
|
|
return remote->SendMouseWheelEvent(*aEvent->AsWheelEvent());
|
|
}
|
|
case NS_TOUCH_EVENT: {
|
|
// Let the child process synthesize a mouse event if needed, and
|
|
// ensure we don't synthesize one in this process.
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
return remote->SendRealTouchEvent(*aEvent->AsTouchEvent());
|
|
}
|
|
default: {
|
|
MOZ_CRASH("Attempt to send non-whitelisted event?");
|
|
}
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsEventStateManager::IsRemoteTarget(nsIContent* target) {
|
|
if (!target) {
|
|
return false;
|
|
}
|
|
|
|
// <browser/iframe remote=true> from XUL
|
|
if ((target->Tag() == nsGkAtoms::browser ||
|
|
target->Tag() == nsGkAtoms::iframe) &&
|
|
target->IsXUL() &&
|
|
target->AttrValueIs(kNameSpaceID_None, nsGkAtoms::Remote,
|
|
nsGkAtoms::_true, eIgnoreCase)) {
|
|
return true;
|
|
}
|
|
|
|
// <frame/iframe mozbrowser/mozapp>
|
|
nsCOMPtr<nsIMozBrowserFrame> browserFrame = do_QueryInterface(target);
|
|
if (browserFrame && browserFrame->GetReallyIsBrowserOrApp()) {
|
|
return !!TabParent::GetFrom(target);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/*static*/ LayoutDeviceIntPoint
|
|
nsEventStateManager::GetChildProcessOffset(nsFrameLoader* aFrameLoader,
|
|
const WidgetEvent& aEvent)
|
|
{
|
|
// The "toplevel widget" in child processes is always at position
|
|
// 0,0. Map the event coordinates to match that.
|
|
nsIFrame* targetFrame = aFrameLoader->GetPrimaryFrameOfOwningContent();
|
|
if (!targetFrame) {
|
|
return LayoutDeviceIntPoint();
|
|
}
|
|
nsPresContext* presContext = targetFrame->PresContext();
|
|
|
|
// Find out how far we're offset from the nearest widget.
|
|
nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo(&aEvent,
|
|
targetFrame);
|
|
return LayoutDeviceIntPoint::FromAppUnitsToNearest(pt, presContext->AppUnitsPerDevPixel());
|
|
}
|
|
|
|
bool
|
|
CrossProcessSafeEvent(const WidgetEvent& aEvent)
|
|
{
|
|
switch (aEvent.eventStructType) {
|
|
case NS_KEY_EVENT:
|
|
case NS_WHEEL_EVENT:
|
|
return true;
|
|
case NS_MOUSE_EVENT:
|
|
switch (aEvent.message) {
|
|
case NS_MOUSE_BUTTON_DOWN:
|
|
case NS_MOUSE_BUTTON_UP:
|
|
case NS_MOUSE_MOVE:
|
|
case NS_CONTEXTMENU:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
case NS_TOUCH_EVENT:
|
|
switch (aEvent.message) {
|
|
case NS_TOUCH_START:
|
|
case NS_TOUCH_MOVE:
|
|
case NS_TOUCH_END:
|
|
case NS_TOUCH_CANCEL:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsEventStateManager::HandleCrossProcessEvent(WidgetEvent* aEvent,
|
|
nsIFrame* aTargetFrame,
|
|
nsEventStatus *aStatus) {
|
|
if (*aStatus == nsEventStatus_eConsumeNoDefault ||
|
|
aEvent->mFlags.mNoCrossProcessBoundaryForwarding ||
|
|
!CrossProcessSafeEvent(*aEvent)) {
|
|
return false;
|
|
}
|
|
|
|
// Collect the remote event targets we're going to forward this
|
|
// event to.
|
|
//
|
|
// NB: the elements of |targets| must be unique, for correctness.
|
|
nsAutoTArray<nsCOMPtr<nsIContent>, 1> targets;
|
|
if (aEvent->eventStructType != NS_TOUCH_EVENT ||
|
|
aEvent->message == NS_TOUCH_START) {
|
|
// If this event only has one target, and it's remote, add it to
|
|
// the array.
|
|
nsIFrame* frame = GetEventTarget();
|
|
nsIContent* target = frame ? frame->GetContent() : nullptr;
|
|
if (IsRemoteTarget(target)) {
|
|
targets.AppendElement(target);
|
|
}
|
|
} else {
|
|
// This is a touch event with possibly multiple touch points.
|
|
// Each touch point may have its own target. So iterate through
|
|
// all of them and collect the unique set of targets for event
|
|
// forwarding.
|
|
//
|
|
// This loop is similar to the one used in
|
|
// PresShell::DispatchTouchEvent().
|
|
const nsTArray< nsRefPtr<Touch> >& touches =
|
|
aEvent->AsTouchEvent()->touches;
|
|
for (uint32_t i = 0; i < touches.Length(); ++i) {
|
|
Touch* touch = touches[i];
|
|
// NB: the |mChanged| check is an optimization, subprocesses can
|
|
// compute this for themselves. If the touch hasn't changed, we
|
|
// may be able to avoid forwarding the event entirely (which is
|
|
// not free).
|
|
if (!touch || !touch->mChanged) {
|
|
continue;
|
|
}
|
|
nsCOMPtr<EventTarget> targetPtr = touch->mTarget;
|
|
if (!targetPtr) {
|
|
continue;
|
|
}
|
|
nsCOMPtr<nsIContent> target = do_QueryInterface(targetPtr);
|
|
if (IsRemoteTarget(target) && !targets.Contains(target)) {
|
|
targets.AppendElement(target);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (targets.Length() == 0) {
|
|
return false;
|
|
}
|
|
|
|
// Look up the frame loader for all the remote targets we found, and
|
|
// then dispatch the event to the remote content they represent.
|
|
bool dispatched = false;
|
|
for (uint32_t i = 0; i < targets.Length(); ++i) {
|
|
nsIContent* target = targets[i];
|
|
nsCOMPtr<nsIFrameLoaderOwner> loaderOwner = do_QueryInterface(target);
|
|
if (!loaderOwner) {
|
|
continue;
|
|
}
|
|
|
|
nsRefPtr<nsFrameLoader> frameLoader = loaderOwner->GetFrameLoader();
|
|
if (!frameLoader) {
|
|
continue;
|
|
}
|
|
|
|
uint32_t eventMode;
|
|
frameLoader->GetEventMode(&eventMode);
|
|
if (eventMode == nsIFrameLoader::EVENT_MODE_DONT_FORWARD_TO_CHILD) {
|
|
continue;
|
|
}
|
|
|
|
dispatched |= DispatchCrossProcessEvent(aEvent, frameLoader, aStatus);
|
|
}
|
|
return dispatched;
|
|
}
|
|
|
|
//
|
|
// CreateClickHoldTimer
|
|
//
|
|
// Fire off a timer for determining if the user wants click-hold. This timer
|
|
// is a one-shot that will be cancelled when the user moves enough to fire
|
|
// a drag.
|
|
//
|
|
void
|
|
nsEventStateManager::CreateClickHoldTimer(nsPresContext* inPresContext,
|
|
nsIFrame* inDownFrame,
|
|
WidgetGUIEvent* inMouseDownEvent)
|
|
{
|
|
if (!inMouseDownEvent->mFlags.mIsTrusted || IsRemoteTarget(mGestureDownContent))
|
|
return;
|
|
|
|
// just to be anal (er, safe)
|
|
if (mClickHoldTimer) {
|
|
mClickHoldTimer->Cancel();
|
|
mClickHoldTimer = nullptr;
|
|
}
|
|
|
|
// if content clicked on has a popup, don't even start the timer
|
|
// since we'll end up conflicting and both will show.
|
|
if (mGestureDownContent) {
|
|
// check for the |popup| attribute
|
|
if (nsContentUtils::HasNonEmptyAttr(mGestureDownContent, kNameSpaceID_None,
|
|
nsGkAtoms::popup))
|
|
return;
|
|
|
|
// check for a <menubutton> like bookmarks
|
|
if (mGestureDownContent->Tag() == nsGkAtoms::menubutton)
|
|
return;
|
|
}
|
|
|
|
mClickHoldTimer = do_CreateInstance("@mozilla.org/timer;1");
|
|
if (mClickHoldTimer) {
|
|
int32_t clickHoldDelay =
|
|
Preferences::GetInt("ui.click_hold_context_menus.delay", 500);
|
|
mClickHoldTimer->InitWithFuncCallback(sClickHoldCallback, this,
|
|
clickHoldDelay,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
}
|
|
} // CreateClickHoldTimer
|
|
|
|
|
|
//
|
|
// KillClickHoldTimer
|
|
//
|
|
// Stop the timer that would show the context menu dead in its tracks
|
|
//
|
|
void
|
|
nsEventStateManager::KillClickHoldTimer()
|
|
{
|
|
if (mClickHoldTimer) {
|
|
mClickHoldTimer->Cancel();
|
|
mClickHoldTimer = nullptr;
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// sClickHoldCallback
|
|
//
|
|
// This fires after the mouse has been down for a certain length of time.
|
|
//
|
|
void
|
|
nsEventStateManager::sClickHoldCallback(nsITimer *aTimer, void* aESM)
|
|
{
|
|
nsRefPtr<nsEventStateManager> self = static_cast<nsEventStateManager*>(aESM);
|
|
if (self) {
|
|
self->FireContextClick();
|
|
}
|
|
|
|
// NOTE: |aTimer| and |self->mAutoHideTimer| are invalid after calling ClosePopup();
|
|
|
|
} // sAutoHideCallback
|
|
|
|
|
|
//
|
|
// FireContextClick
|
|
//
|
|
// If we're this far, our timer has fired, which means the mouse has been down
|
|
// for a certain period of time and has not moved enough to generate a dragGesture.
|
|
// We can be certain the user wants a context-click at this stage, so generate
|
|
// a dom event and fire it in.
|
|
//
|
|
// After the event fires, check if PreventDefault() has been set on the event which
|
|
// means that someone either ate the event or put up a context menu. This is our cue
|
|
// to stop tracking the drag gesture. If we always did this, draggable items w/out
|
|
// a context menu wouldn't be draggable after a certain length of time, which is
|
|
// _not_ what we want.
|
|
//
|
|
void
|
|
nsEventStateManager::FireContextClick()
|
|
{
|
|
if (!mGestureDownContent || !mPresContext) {
|
|
return;
|
|
}
|
|
|
|
#ifdef XP_MACOSX
|
|
// Hack to ensure that we don't show a context menu when the user
|
|
// let go of the mouse after a long cpu-hogging operation prevented
|
|
// us from handling any OS events. See bug 117589.
|
|
if (!CGEventSourceButtonState(kCGEventSourceStateCombinedSessionState, kCGMouseButtonLeft))
|
|
return;
|
|
#endif
|
|
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
|
|
// Dispatch to the DOM. We have to fake out the ESM and tell it that the
|
|
// current target frame is actually where the mouseDown occurred, otherwise it
|
|
// will use the frame the mouse is currently over which may or may not be
|
|
// the same. (Note: saari and I have decided that we don't have to reset |mCurrentTarget|
|
|
// when we're through because no one else is doing anything more with this
|
|
// event and it will get reset on the very next event to the correct frame).
|
|
mCurrentTarget = mPresContext->GetPrimaryFrameFor(mGestureDownContent);
|
|
// make sure the widget sticks around
|
|
nsCOMPtr<nsIWidget> targetWidget;
|
|
if (mCurrentTarget && (targetWidget = mCurrentTarget->GetNearestWidget())) {
|
|
NS_ASSERTION(mPresContext == mCurrentTarget->PresContext(),
|
|
"a prescontext returned a primary frame that didn't belong to it?");
|
|
|
|
// before dispatching, check that we're not on something that
|
|
// doesn't get a context menu
|
|
nsIAtom *tag = mGestureDownContent->Tag();
|
|
bool allowedToDispatch = true;
|
|
|
|
if (mGestureDownContent->IsXUL()) {
|
|
if (tag == nsGkAtoms::scrollbar ||
|
|
tag == nsGkAtoms::scrollbarbutton ||
|
|
tag == nsGkAtoms::button)
|
|
allowedToDispatch = false;
|
|
else if (tag == nsGkAtoms::toolbarbutton) {
|
|
// a <toolbarbutton> that has the container attribute set
|
|
// will already have its own dropdown.
|
|
if (nsContentUtils::HasNonEmptyAttr(mGestureDownContent,
|
|
kNameSpaceID_None, nsGkAtoms::container)) {
|
|
allowedToDispatch = false;
|
|
} else {
|
|
// If the toolbar button has an open menu, don't attempt to open
|
|
// a second menu
|
|
if (mGestureDownContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::open,
|
|
nsGkAtoms::_true, eCaseMatters)) {
|
|
allowedToDispatch = false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (mGestureDownContent->IsHTML()) {
|
|
nsCOMPtr<nsIFormControl> formCtrl(do_QueryInterface(mGestureDownContent));
|
|
|
|
if (formCtrl) {
|
|
allowedToDispatch = formCtrl->IsTextControl(false) ||
|
|
formCtrl->GetType() == NS_FORM_INPUT_FILE;
|
|
}
|
|
else if (tag == nsGkAtoms::applet ||
|
|
tag == nsGkAtoms::embed ||
|
|
tag == nsGkAtoms::object) {
|
|
allowedToDispatch = false;
|
|
}
|
|
}
|
|
|
|
if (allowedToDispatch) {
|
|
// init the event while mCurrentTarget is still good
|
|
WidgetMouseEvent event(true, NS_CONTEXTMENU, targetWidget,
|
|
WidgetMouseEvent::eReal);
|
|
event.clickCount = 1;
|
|
FillInEventFromGestureDown(&event);
|
|
|
|
// stop selection tracking, we're in control now
|
|
if (mCurrentTarget)
|
|
{
|
|
nsRefPtr<nsFrameSelection> frameSel =
|
|
mCurrentTarget->GetFrameSelection();
|
|
|
|
if (frameSel && frameSel->GetMouseDownState()) {
|
|
// note that this can cause selection changed events to fire if we're in
|
|
// a text field, which will null out mCurrentTarget
|
|
frameSel->SetMouseDownState(false);
|
|
}
|
|
}
|
|
|
|
nsIDocument* doc = mGestureDownContent->GetCurrentDoc();
|
|
AutoHandlingUserInputStatePusher userInpStatePusher(true, &event, doc);
|
|
|
|
// dispatch to DOM
|
|
nsEventDispatcher::Dispatch(mGestureDownContent, mPresContext, &event,
|
|
nullptr, &status);
|
|
|
|
// We don't need to dispatch to frame handling because no frames
|
|
// watch NS_CONTEXTMENU except for nsMenuFrame and that's only for
|
|
// dismissal. That's just as well since we don't really know
|
|
// which frame to send it to.
|
|
}
|
|
}
|
|
|
|
// now check if the event has been handled. If so, stop tracking a drag
|
|
if (status == nsEventStatus_eConsumeNoDefault) {
|
|
StopTrackingDragGesture();
|
|
}
|
|
|
|
KillClickHoldTimer();
|
|
|
|
} // FireContextClick
|
|
|
|
|
|
//
|
|
// BeginTrackingDragGesture
|
|
//
|
|
// Record that the mouse has gone down and that we should move to TRACKING state
|
|
// of d&d gesture tracker.
|
|
//
|
|
// We also use this to track click-hold context menus. When the mouse goes down,
|
|
// fire off a short timer. If the timer goes off and we have yet to fire the
|
|
// drag gesture (ie, the mouse hasn't moved a certain distance), then we can
|
|
// assume the user wants a click-hold, so fire a context-click event. We only
|
|
// want to cancel the drag gesture if the context-click event is handled.
|
|
//
|
|
void
|
|
nsEventStateManager::BeginTrackingDragGesture(nsPresContext* aPresContext,
|
|
WidgetMouseEvent* inDownEvent,
|
|
nsIFrame* inDownFrame)
|
|
{
|
|
if (!inDownEvent->widget)
|
|
return;
|
|
|
|
// Note that |inDownEvent| could be either a mouse down event or a
|
|
// synthesized mouse move event.
|
|
mGestureDownPoint = inDownEvent->refPoint +
|
|
LayoutDeviceIntPoint::FromUntyped(inDownEvent->widget->WidgetToScreenOffset());
|
|
|
|
inDownFrame->GetContentForEvent(inDownEvent,
|
|
getter_AddRefs(mGestureDownContent));
|
|
|
|
mGestureDownFrameOwner = inDownFrame->GetContent();
|
|
mGestureModifiers = inDownEvent->modifiers;
|
|
mGestureDownButtons = inDownEvent->buttons;
|
|
|
|
if (Prefs::ClickHoldContextMenu()) {
|
|
// fire off a timer to track click-hold
|
|
CreateClickHoldTimer(aPresContext, inDownFrame, inDownEvent);
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// StopTrackingDragGesture
|
|
//
|
|
// Record that the mouse has gone back up so that we should leave the TRACKING
|
|
// state of d&d gesture tracker and return to the START state.
|
|
//
|
|
void
|
|
nsEventStateManager::StopTrackingDragGesture()
|
|
{
|
|
mGestureDownContent = nullptr;
|
|
mGestureDownFrameOwner = nullptr;
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::FillInEventFromGestureDown(WidgetMouseEvent* aEvent)
|
|
{
|
|
NS_ASSERTION(aEvent->widget == mCurrentTarget->GetNearestWidget(),
|
|
"Incorrect widget in event");
|
|
|
|
// Set the coordinates in the new event to the coordinates of
|
|
// the old event, adjusted for the fact that the widget might be
|
|
// different
|
|
aEvent->refPoint = mGestureDownPoint -
|
|
LayoutDeviceIntPoint::FromUntyped(aEvent->widget->WidgetToScreenOffset());
|
|
aEvent->modifiers = mGestureModifiers;
|
|
aEvent->buttons = mGestureDownButtons;
|
|
}
|
|
|
|
//
|
|
// GenerateDragGesture
|
|
//
|
|
// If we're in the TRACKING state of the d&d gesture tracker, check the current position
|
|
// of the mouse in relation to the old one. If we've moved a sufficient amount from
|
|
// the mouse down, then fire off a drag gesture event.
|
|
void
|
|
nsEventStateManager::GenerateDragGesture(nsPresContext* aPresContext,
|
|
WidgetMouseEvent* aEvent)
|
|
{
|
|
NS_ASSERTION(aPresContext, "This shouldn't happen.");
|
|
if (IsTrackingDragGesture()) {
|
|
mCurrentTarget = mGestureDownFrameOwner->GetPrimaryFrame();
|
|
|
|
if (!mCurrentTarget) {
|
|
StopTrackingDragGesture();
|
|
return;
|
|
}
|
|
|
|
// Check if selection is tracking drag gestures, if so
|
|
// don't interfere!
|
|
if (mCurrentTarget)
|
|
{
|
|
nsRefPtr<nsFrameSelection> frameSel = mCurrentTarget->GetFrameSelection();
|
|
if (frameSel && frameSel->GetMouseDownState()) {
|
|
StopTrackingDragGesture();
|
|
return;
|
|
}
|
|
}
|
|
|
|
// If non-native code is capturing the mouse don't start a drag.
|
|
if (nsIPresShell::IsMouseCapturePreventingDrag()) {
|
|
StopTrackingDragGesture();
|
|
return;
|
|
}
|
|
|
|
static int32_t pixelThresholdX = 0;
|
|
static int32_t pixelThresholdY = 0;
|
|
|
|
if (!pixelThresholdX) {
|
|
pixelThresholdX =
|
|
LookAndFeel::GetInt(LookAndFeel::eIntID_DragThresholdX, 0);
|
|
pixelThresholdY =
|
|
LookAndFeel::GetInt(LookAndFeel::eIntID_DragThresholdY, 0);
|
|
if (!pixelThresholdX)
|
|
pixelThresholdX = 5;
|
|
if (!pixelThresholdY)
|
|
pixelThresholdY = 5;
|
|
}
|
|
|
|
// fire drag gesture if mouse has moved enough
|
|
LayoutDeviceIntPoint pt = aEvent->refPoint +
|
|
LayoutDeviceIntPoint::FromUntyped(aEvent->widget->WidgetToScreenOffset());
|
|
if (DeprecatedAbs(pt.x - mGestureDownPoint.x) > pixelThresholdX ||
|
|
DeprecatedAbs(pt.y - mGestureDownPoint.y) > pixelThresholdY) {
|
|
if (Prefs::ClickHoldContextMenu()) {
|
|
// stop the click-hold before we fire off the drag gesture, in case
|
|
// it takes a long time
|
|
KillClickHoldTimer();
|
|
}
|
|
|
|
nsCOMPtr<nsISupports> container = aPresContext->GetContainerWeak();
|
|
nsCOMPtr<nsPIDOMWindow> window = do_GetInterface(container);
|
|
if (!window)
|
|
return;
|
|
|
|
nsRefPtr<DataTransfer> dataTransfer =
|
|
new DataTransfer(window, NS_DRAGDROP_START, false, -1);
|
|
|
|
nsCOMPtr<nsISelection> selection;
|
|
nsCOMPtr<nsIContent> eventContent, targetContent;
|
|
mCurrentTarget->GetContentForEvent(aEvent, getter_AddRefs(eventContent));
|
|
if (eventContent)
|
|
DetermineDragTarget(window, eventContent, dataTransfer,
|
|
getter_AddRefs(selection), getter_AddRefs(targetContent));
|
|
|
|
// Stop tracking the drag gesture now. This should stop us from
|
|
// reentering GenerateDragGesture inside DOM event processing.
|
|
StopTrackingDragGesture();
|
|
|
|
if (!targetContent)
|
|
return;
|
|
|
|
// Use our targetContent, now that we've determined it, as the
|
|
// parent object of the DataTransfer.
|
|
dataTransfer->SetParentObject(targetContent);
|
|
|
|
sLastDragOverFrame = nullptr;
|
|
nsCOMPtr<nsIWidget> widget = mCurrentTarget->GetNearestWidget();
|
|
|
|
// get the widget from the target frame
|
|
WidgetDragEvent startEvent(aEvent->mFlags.mIsTrusted,
|
|
NS_DRAGDROP_START, widget);
|
|
FillInEventFromGestureDown(&startEvent);
|
|
|
|
WidgetDragEvent gestureEvent(aEvent->mFlags.mIsTrusted,
|
|
NS_DRAGDROP_GESTURE, widget);
|
|
FillInEventFromGestureDown(&gestureEvent);
|
|
|
|
startEvent.dataTransfer = gestureEvent.dataTransfer = dataTransfer;
|
|
startEvent.inputSource = gestureEvent.inputSource = aEvent->inputSource;
|
|
|
|
// Dispatch to the DOM. By setting mCurrentTarget we are faking
|
|
// out the ESM and telling it that the current target frame is
|
|
// actually where the mouseDown occurred, otherwise it will use
|
|
// the frame the mouse is currently over which may or may not be
|
|
// the same. (Note: saari and I have decided that we don't have
|
|
// to reset |mCurrentTarget| when we're through because no one
|
|
// else is doing anything more with this event and it will get
|
|
// reset on the very next event to the correct frame).
|
|
|
|
// Hold onto old target content through the event and reset after.
|
|
nsCOMPtr<nsIContent> targetBeforeEvent = mCurrentTargetContent;
|
|
|
|
// Set the current target to the content for the mouse down
|
|
mCurrentTargetContent = targetContent;
|
|
|
|
// Dispatch both the dragstart and draggesture events to the DOM. For
|
|
// elements in an editor, only fire the draggesture event so that the
|
|
// editor code can handle it but content doesn't see a dragstart.
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
nsEventDispatcher::Dispatch(targetContent, aPresContext, &startEvent, nullptr,
|
|
&status);
|
|
|
|
WidgetDragEvent* event = &startEvent;
|
|
if (status != nsEventStatus_eConsumeNoDefault) {
|
|
status = nsEventStatus_eIgnore;
|
|
nsEventDispatcher::Dispatch(targetContent, aPresContext, &gestureEvent, nullptr,
|
|
&status);
|
|
event = &gestureEvent;
|
|
}
|
|
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
// Emit observer event to allow addons to modify the DataTransfer object.
|
|
if (observerService) {
|
|
observerService->NotifyObservers(dataTransfer,
|
|
"on-datatransfer-available",
|
|
nullptr);
|
|
}
|
|
|
|
// now that the dataTransfer has been updated in the dragstart and
|
|
// draggesture events, make it read only so that the data doesn't
|
|
// change during the drag.
|
|
dataTransfer->SetReadOnly();
|
|
|
|
if (status != nsEventStatus_eConsumeNoDefault) {
|
|
bool dragStarted = DoDefaultDragStart(aPresContext, event, dataTransfer,
|
|
targetContent, selection);
|
|
if (dragStarted) {
|
|
sActiveESM = nullptr;
|
|
aEvent->mFlags.mPropagationStopped = true;
|
|
}
|
|
}
|
|
|
|
// Note that frame event handling doesn't care about NS_DRAGDROP_GESTURE,
|
|
// which is just as well since we don't really know which frame to
|
|
// send it to
|
|
|
|
// Reset mCurretTargetContent to what it was
|
|
mCurrentTargetContent = targetBeforeEvent;
|
|
}
|
|
|
|
// Now flush all pending notifications, for better responsiveness
|
|
// while dragging.
|
|
FlushPendingEvents(aPresContext);
|
|
}
|
|
} // GenerateDragGesture
|
|
|
|
void
|
|
nsEventStateManager::DetermineDragTarget(nsPIDOMWindow* aWindow,
|
|
nsIContent* aSelectionTarget,
|
|
DataTransfer* aDataTransfer,
|
|
nsISelection** aSelection,
|
|
nsIContent** aTargetNode)
|
|
{
|
|
*aTargetNode = nullptr;
|
|
|
|
// GetDragData determines if a selection, link or image in the content
|
|
// should be dragged, and places the data associated with the drag in the
|
|
// data transfer.
|
|
// mGestureDownContent is the node where the mousedown event for the drag
|
|
// occurred, and aSelectionTarget is the node to use when a selection is used
|
|
bool canDrag;
|
|
nsCOMPtr<nsIContent> dragDataNode;
|
|
bool wasAlt = (mGestureModifiers & MODIFIER_ALT) != 0;
|
|
nsresult rv = nsContentAreaDragDrop::GetDragData(aWindow, mGestureDownContent,
|
|
aSelectionTarget, wasAlt,
|
|
aDataTransfer, &canDrag, aSelection,
|
|
getter_AddRefs(dragDataNode));
|
|
if (NS_FAILED(rv) || !canDrag)
|
|
return;
|
|
|
|
// if GetDragData returned a node, use that as the node being dragged.
|
|
// Otherwise, if a selection is being dragged, use the node within the
|
|
// selection that was dragged. Otherwise, just use the mousedown target.
|
|
nsIContent* dragContent = mGestureDownContent;
|
|
if (dragDataNode)
|
|
dragContent = dragDataNode;
|
|
else if (*aSelection)
|
|
dragContent = aSelectionTarget;
|
|
|
|
nsIContent* originalDragContent = dragContent;
|
|
|
|
// If a selection isn't being dragged, look for an ancestor with the
|
|
// draggable property set. If one is found, use that as the target of the
|
|
// drag instead of the node that was clicked on. If a draggable node wasn't
|
|
// found, just use the clicked node.
|
|
if (!*aSelection) {
|
|
while (dragContent) {
|
|
nsCOMPtr<nsIDOMHTMLElement> htmlElement = do_QueryInterface(dragContent);
|
|
if (htmlElement) {
|
|
bool draggable = false;
|
|
htmlElement->GetDraggable(&draggable);
|
|
if (draggable)
|
|
break;
|
|
}
|
|
else {
|
|
nsCOMPtr<nsIDOMXULElement> xulElement = do_QueryInterface(dragContent);
|
|
if (xulElement) {
|
|
// All XUL elements are draggable, so if a XUL element is
|
|
// encountered, stop looking for draggable nodes and just use the
|
|
// original clicked node instead.
|
|
// XXXndeakin
|
|
// In the future, we will want to improve this so that XUL has a
|
|
// better way to specify whether something is draggable than just
|
|
// on/off.
|
|
dragContent = mGestureDownContent;
|
|
break;
|
|
}
|
|
// otherwise, it's not an HTML or XUL element, so just keep looking
|
|
}
|
|
dragContent = dragContent->GetParent();
|
|
}
|
|
}
|
|
|
|
// if no node in the hierarchy was found to drag, but the GetDragData method
|
|
// returned a node, use that returned node. Otherwise, nothing is draggable.
|
|
if (!dragContent && dragDataNode)
|
|
dragContent = dragDataNode;
|
|
|
|
if (dragContent) {
|
|
// if an ancestor node was used instead, clear the drag data
|
|
// XXXndeakin rework this a bit. Find a way to just not call GetDragData if we don't need to.
|
|
if (dragContent != originalDragContent)
|
|
aDataTransfer->ClearAll();
|
|
*aTargetNode = dragContent;
|
|
NS_ADDREF(*aTargetNode);
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsEventStateManager::DoDefaultDragStart(nsPresContext* aPresContext,
|
|
WidgetDragEvent* aDragEvent,
|
|
DataTransfer* aDataTransfer,
|
|
nsIContent* aDragTarget,
|
|
nsISelection* aSelection)
|
|
{
|
|
nsCOMPtr<nsIDragService> dragService =
|
|
do_GetService("@mozilla.org/widget/dragservice;1");
|
|
if (!dragService)
|
|
return false;
|
|
|
|
// Default handling for the draggesture/dragstart event.
|
|
//
|
|
// First, check if a drag session already exists. This means that the drag
|
|
// service was called directly within a draggesture handler. In this case,
|
|
// don't do anything more, as it is assumed that the handler is managing
|
|
// drag and drop manually. Make sure to return true to indicate that a drag
|
|
// began.
|
|
nsCOMPtr<nsIDragSession> dragSession;
|
|
dragService->GetCurrentSession(getter_AddRefs(dragSession));
|
|
if (dragSession)
|
|
return true;
|
|
|
|
// No drag session is currently active, so check if a handler added
|
|
// any items to be dragged. If not, there isn't anything to drag.
|
|
uint32_t count = 0;
|
|
if (aDataTransfer)
|
|
aDataTransfer->GetMozItemCount(&count);
|
|
if (!count)
|
|
return false;
|
|
|
|
// Get the target being dragged, which may not be the same as the
|
|
// target of the mouse event. If one wasn't set in the
|
|
// aDataTransfer during the event handler, just use the original
|
|
// target instead.
|
|
nsCOMPtr<nsIContent> dragTarget = aDataTransfer->GetDragTarget();
|
|
if (!dragTarget) {
|
|
dragTarget = aDragTarget;
|
|
if (!dragTarget)
|
|
return false;
|
|
}
|
|
|
|
// check which drag effect should initially be used. If the effect was not
|
|
// set, just use all actions, otherwise Windows won't allow a drop.
|
|
uint32_t action;
|
|
aDataTransfer->GetEffectAllowedInt(&action);
|
|
if (action == nsIDragService::DRAGDROP_ACTION_UNINITIALIZED)
|
|
action = nsIDragService::DRAGDROP_ACTION_COPY |
|
|
nsIDragService::DRAGDROP_ACTION_MOVE |
|
|
nsIDragService::DRAGDROP_ACTION_LINK;
|
|
|
|
// get any custom drag image that was set
|
|
int32_t imageX, imageY;
|
|
Element* dragImage = aDataTransfer->GetDragImage(&imageX, &imageY);
|
|
|
|
nsCOMPtr<nsISupportsArray> transArray =
|
|
aDataTransfer->GetTransferables(dragTarget->AsDOMNode());
|
|
if (!transArray)
|
|
return false;
|
|
|
|
// XXXndeakin don't really want to create a new drag DOM event
|
|
// here, but we need something to pass to the InvokeDragSession
|
|
// methods.
|
|
nsCOMPtr<nsIDOMEvent> domEvent;
|
|
NS_NewDOMDragEvent(getter_AddRefs(domEvent), dragTarget,
|
|
aPresContext, aDragEvent);
|
|
|
|
nsCOMPtr<nsIDOMDragEvent> domDragEvent = do_QueryInterface(domEvent);
|
|
// if creating a drag event failed, starting a drag session will
|
|
// just fail.
|
|
|
|
// Use InvokeDragSessionWithSelection if a selection is being dragged,
|
|
// such that the image can be generated from the selected text. However,
|
|
// use InvokeDragSessionWithImage if a custom image was set or something
|
|
// other than a selection is being dragged.
|
|
if (!dragImage && aSelection) {
|
|
dragService->InvokeDragSessionWithSelection(aSelection, transArray,
|
|
action, domDragEvent,
|
|
aDataTransfer);
|
|
}
|
|
else {
|
|
// if dragging within a XUL tree and no custom drag image was
|
|
// set, the region argument to InvokeDragSessionWithImage needs
|
|
// to be set to the area encompassing the selected rows of the
|
|
// tree to ensure that the drag feedback gets clipped to those
|
|
// rows. For other content, region should be null.
|
|
nsCOMPtr<nsIScriptableRegion> region;
|
|
#ifdef MOZ_XUL
|
|
if (dragTarget && !dragImage) {
|
|
if (dragTarget->NodeInfo()->Equals(nsGkAtoms::treechildren,
|
|
kNameSpaceID_XUL)) {
|
|
nsTreeBodyFrame* treeBody =
|
|
do_QueryFrame(dragTarget->GetPrimaryFrame());
|
|
if (treeBody) {
|
|
treeBody->GetSelectionRegion(getter_AddRefs(region));
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
dragService->InvokeDragSessionWithImage(dragTarget->AsDOMNode(), transArray,
|
|
region, action,
|
|
dragImage ? dragImage->AsDOMNode() :
|
|
nullptr,
|
|
imageX,
|
|
imageY, domDragEvent,
|
|
aDataTransfer);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
nsresult
|
|
nsEventStateManager::GetMarkupDocumentViewer(nsIMarkupDocumentViewer** aMv)
|
|
{
|
|
*aMv = nullptr;
|
|
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if(!fm) return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIDOMWindow> focusedWindow;
|
|
fm->GetFocusedWindow(getter_AddRefs(focusedWindow));
|
|
|
|
nsCOMPtr<nsPIDOMWindow> ourWindow = do_QueryInterface(focusedWindow);
|
|
if(!ourWindow) return NS_ERROR_FAILURE;
|
|
|
|
nsIDOMWindow *rootWindow = ourWindow->GetPrivateRoot();
|
|
if(!rootWindow) return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIDOMWindow> contentWindow;
|
|
rootWindow->GetContent(getter_AddRefs(contentWindow));
|
|
if(!contentWindow) return NS_ERROR_FAILURE;
|
|
|
|
nsIDocument *doc = GetDocumentFromWindow(contentWindow);
|
|
if(!doc) return NS_ERROR_FAILURE;
|
|
|
|
nsIPresShell *presShell = doc->GetShell();
|
|
if(!presShell) return NS_ERROR_FAILURE;
|
|
nsPresContext *presContext = presShell->GetPresContext();
|
|
if(!presContext) return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIDocShell> docshell(presContext->GetDocShell());
|
|
if(!docshell) return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIContentViewer> cv;
|
|
docshell->GetContentViewer(getter_AddRefs(cv));
|
|
if(!cv) return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIMarkupDocumentViewer> mv(do_QueryInterface(cv));
|
|
if(!mv) return NS_ERROR_FAILURE;
|
|
|
|
*aMv = mv;
|
|
NS_IF_ADDREF(*aMv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEventStateManager::ChangeTextSize(int32_t change)
|
|
{
|
|
nsCOMPtr<nsIMarkupDocumentViewer> mv;
|
|
nsresult rv = GetMarkupDocumentViewer(getter_AddRefs(mv));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
float textzoom;
|
|
float zoomMin = ((float)Preferences::GetInt("zoom.minPercent", 50)) / 100;
|
|
float zoomMax = ((float)Preferences::GetInt("zoom.maxPercent", 300)) / 100;
|
|
mv->GetTextZoom(&textzoom);
|
|
textzoom += ((float)change) / 10;
|
|
if (textzoom < zoomMin)
|
|
textzoom = zoomMin;
|
|
else if (textzoom > zoomMax)
|
|
textzoom = zoomMax;
|
|
mv->SetTextZoom(textzoom);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEventStateManager::ChangeFullZoom(int32_t change)
|
|
{
|
|
nsCOMPtr<nsIMarkupDocumentViewer> mv;
|
|
nsresult rv = GetMarkupDocumentViewer(getter_AddRefs(mv));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
float fullzoom;
|
|
float zoomMin = ((float)Preferences::GetInt("zoom.minPercent", 50)) / 100;
|
|
float zoomMax = ((float)Preferences::GetInt("zoom.maxPercent", 300)) / 100;
|
|
mv->GetFullZoom(&fullzoom);
|
|
fullzoom += ((float)change) / 10;
|
|
if (fullzoom < zoomMin)
|
|
fullzoom = zoomMin;
|
|
else if (fullzoom > zoomMax)
|
|
fullzoom = zoomMax;
|
|
mv->SetFullZoom(fullzoom);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::DoScrollHistory(int32_t direction)
|
|
{
|
|
nsCOMPtr<nsISupports> pcContainer(mPresContext->GetContainerWeak());
|
|
if (pcContainer) {
|
|
nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(pcContainer));
|
|
if (webNav) {
|
|
// positive direction to go back one step, nonpositive to go forward
|
|
if (direction > 0)
|
|
webNav->GoBack();
|
|
else
|
|
webNav->GoForward();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::DoScrollZoom(nsIFrame *aTargetFrame,
|
|
int32_t adjustment)
|
|
{
|
|
// Exclude form controls and content in chrome docshells.
|
|
nsIContent *content = aTargetFrame->GetContent();
|
|
if (content &&
|
|
!content->IsNodeOfType(nsINode::eHTML_FORM_CONTROL) &&
|
|
!nsContentUtils::IsInChromeDocshell(content->OwnerDoc()))
|
|
{
|
|
// positive adjustment to decrease zoom, negative to increase
|
|
int32_t change = (adjustment > 0) ? -1 : 1;
|
|
|
|
if (Preferences::GetBool("browser.zoom.full") || content->GetCurrentDoc()->IsSyntheticDocument()) {
|
|
ChangeFullZoom(change);
|
|
} else {
|
|
ChangeTextSize(change);
|
|
}
|
|
}
|
|
}
|
|
|
|
static nsIFrame*
|
|
GetParentFrameToScroll(nsIFrame* aFrame)
|
|
{
|
|
if (!aFrame)
|
|
return nullptr;
|
|
|
|
if (aFrame->StyleDisplay()->mPosition == NS_STYLE_POSITION_FIXED &&
|
|
nsLayoutUtils::IsReallyFixedPos(aFrame))
|
|
return aFrame->PresContext()->GetPresShell()->GetRootScrollFrame();
|
|
|
|
return aFrame->GetParent();
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::DispatchLegacyMouseScrollEvents(nsIFrame* aTargetFrame,
|
|
WidgetWheelEvent* aEvent,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
MOZ_ASSERT(aEvent);
|
|
MOZ_ASSERT(aStatus);
|
|
|
|
if (!aTargetFrame || *aStatus == nsEventStatus_eConsumeNoDefault) {
|
|
return;
|
|
}
|
|
|
|
// Ignore mouse wheel transaction for computing legacy mouse wheel
|
|
// events' delta value.
|
|
nsIScrollableFrame* scrollTarget =
|
|
ComputeScrollTarget(aTargetFrame, aEvent,
|
|
COMPUTE_LEGACY_MOUSE_SCROLL_EVENT_TARGET);
|
|
|
|
nsIFrame* scrollFrame = do_QueryFrame(scrollTarget);
|
|
nsPresContext* pc =
|
|
scrollFrame ? scrollFrame->PresContext() : aTargetFrame->PresContext();
|
|
|
|
// DOM event's delta vales are computed from CSS pixels.
|
|
nsSize scrollAmount = GetScrollAmount(pc, aEvent, scrollTarget);
|
|
nsIntSize scrollAmountInCSSPixels(
|
|
nsPresContext::AppUnitsToIntCSSPixels(scrollAmount.width),
|
|
nsPresContext::AppUnitsToIntCSSPixels(scrollAmount.height));
|
|
|
|
// XXX We don't deal with fractional amount in legacy event, though the
|
|
// default action handler (DoScrollText()) deals with it.
|
|
// If we implemented such strict computation, we would need additional
|
|
// accumulated delta values. It would made the code more complicated.
|
|
// And also it would computes different delta values from older version.
|
|
// It doesn't make sense to implement such code for legacy events and
|
|
// rare cases.
|
|
int32_t scrollDeltaX, scrollDeltaY, pixelDeltaX, pixelDeltaY;
|
|
switch (aEvent->deltaMode) {
|
|
case nsIDOMWheelEvent::DOM_DELTA_PAGE:
|
|
scrollDeltaX =
|
|
!aEvent->lineOrPageDeltaX ? 0 :
|
|
(aEvent->lineOrPageDeltaX > 0 ? nsIDOMUIEvent::SCROLL_PAGE_DOWN :
|
|
nsIDOMUIEvent::SCROLL_PAGE_UP);
|
|
scrollDeltaY =
|
|
!aEvent->lineOrPageDeltaY ? 0 :
|
|
(aEvent->lineOrPageDeltaY > 0 ? nsIDOMUIEvent::SCROLL_PAGE_DOWN :
|
|
nsIDOMUIEvent::SCROLL_PAGE_UP);
|
|
pixelDeltaX = RoundDown(aEvent->deltaX * scrollAmountInCSSPixels.width);
|
|
pixelDeltaY = RoundDown(aEvent->deltaY * scrollAmountInCSSPixels.height);
|
|
break;
|
|
|
|
case nsIDOMWheelEvent::DOM_DELTA_LINE:
|
|
scrollDeltaX = aEvent->lineOrPageDeltaX;
|
|
scrollDeltaY = aEvent->lineOrPageDeltaY;
|
|
pixelDeltaX = RoundDown(aEvent->deltaX * scrollAmountInCSSPixels.width);
|
|
pixelDeltaY = RoundDown(aEvent->deltaY * scrollAmountInCSSPixels.height);
|
|
break;
|
|
|
|
case nsIDOMWheelEvent::DOM_DELTA_PIXEL:
|
|
scrollDeltaX = aEvent->lineOrPageDeltaX;
|
|
scrollDeltaY = aEvent->lineOrPageDeltaY;
|
|
pixelDeltaX = RoundDown(aEvent->deltaX);
|
|
pixelDeltaY = RoundDown(aEvent->deltaY);
|
|
break;
|
|
|
|
default:
|
|
MOZ_CRASH("Invalid deltaMode value comes");
|
|
}
|
|
|
|
// Send the legacy events in following order:
|
|
// 1. Vertical scroll
|
|
// 2. Vertical pixel scroll (even if #1 isn't consumed)
|
|
// 3. Horizontal scroll (even if #1 and/or #2 are consumed)
|
|
// 4. Horizontal pixel scroll (even if #3 isn't consumed)
|
|
|
|
nsWeakFrame targetFrame(aTargetFrame);
|
|
|
|
MOZ_ASSERT(*aStatus != nsEventStatus_eConsumeNoDefault &&
|
|
!aEvent->mFlags.mDefaultPrevented,
|
|
"If you make legacy events dispatched for default prevented wheel "
|
|
"event, you need to initialize stateX and stateY");
|
|
EventState stateX, stateY;
|
|
if (scrollDeltaY) {
|
|
SendLineScrollEvent(aTargetFrame, aEvent, stateY,
|
|
scrollDeltaY, DELTA_DIRECTION_Y);
|
|
if (!targetFrame.IsAlive()) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (pixelDeltaY) {
|
|
SendPixelScrollEvent(aTargetFrame, aEvent, stateY,
|
|
pixelDeltaY, DELTA_DIRECTION_Y);
|
|
if (!targetFrame.IsAlive()) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (scrollDeltaX) {
|
|
SendLineScrollEvent(aTargetFrame, aEvent, stateX,
|
|
scrollDeltaX, DELTA_DIRECTION_X);
|
|
if (!targetFrame.IsAlive()) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (pixelDeltaX) {
|
|
SendPixelScrollEvent(aTargetFrame, aEvent, stateX,
|
|
pixelDeltaX, DELTA_DIRECTION_X);
|
|
if (!targetFrame.IsAlive()) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (stateY.mDefaultPrevented || stateX.mDefaultPrevented) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
aEvent->mFlags.mDefaultPrevented = true;
|
|
aEvent->mFlags.mDefaultPreventedByContent |=
|
|
stateY.mDefaultPreventedByContent || stateX.mDefaultPreventedByContent;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::SendLineScrollEvent(nsIFrame* aTargetFrame,
|
|
WidgetWheelEvent* aEvent,
|
|
EventState& aState,
|
|
int32_t aDelta,
|
|
DeltaDirection aDeltaDirection)
|
|
{
|
|
nsCOMPtr<nsIContent> targetContent = aTargetFrame->GetContent();
|
|
if (!targetContent)
|
|
targetContent = GetFocusedContent();
|
|
if (!targetContent)
|
|
return;
|
|
|
|
while (targetContent->IsNodeOfType(nsINode::eTEXT)) {
|
|
targetContent = targetContent->GetParent();
|
|
}
|
|
|
|
WidgetMouseScrollEvent event(aEvent->mFlags.mIsTrusted, NS_MOUSE_SCROLL,
|
|
aEvent->widget);
|
|
event.mFlags.mDefaultPrevented = aState.mDefaultPrevented;
|
|
event.mFlags.mDefaultPreventedByContent = aState.mDefaultPreventedByContent;
|
|
event.refPoint = aEvent->refPoint;
|
|
event.widget = aEvent->widget;
|
|
event.time = aEvent->time;
|
|
event.modifiers = aEvent->modifiers;
|
|
event.buttons = aEvent->buttons;
|
|
event.isHorizontal = (aDeltaDirection == DELTA_DIRECTION_X);
|
|
event.delta = aDelta;
|
|
event.inputSource = aEvent->inputSource;
|
|
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
nsEventDispatcher::Dispatch(targetContent, aTargetFrame->PresContext(),
|
|
&event, nullptr, &status);
|
|
aState.mDefaultPrevented =
|
|
event.mFlags.mDefaultPrevented || status == nsEventStatus_eConsumeNoDefault;
|
|
aState.mDefaultPreventedByContent = event.mFlags.mDefaultPreventedByContent;
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::SendPixelScrollEvent(nsIFrame* aTargetFrame,
|
|
WidgetWheelEvent* aEvent,
|
|
EventState& aState,
|
|
int32_t aPixelDelta,
|
|
DeltaDirection aDeltaDirection)
|
|
{
|
|
nsCOMPtr<nsIContent> targetContent = aTargetFrame->GetContent();
|
|
if (!targetContent) {
|
|
targetContent = GetFocusedContent();
|
|
if (!targetContent)
|
|
return;
|
|
}
|
|
|
|
while (targetContent->IsNodeOfType(nsINode::eTEXT)) {
|
|
targetContent = targetContent->GetParent();
|
|
}
|
|
|
|
WidgetMouseScrollEvent event(aEvent->mFlags.mIsTrusted, NS_MOUSE_PIXEL_SCROLL,
|
|
aEvent->widget);
|
|
event.mFlags.mDefaultPrevented = aState.mDefaultPrevented;
|
|
event.mFlags.mDefaultPreventedByContent = aState.mDefaultPreventedByContent;
|
|
event.refPoint = aEvent->refPoint;
|
|
event.widget = aEvent->widget;
|
|
event.time = aEvent->time;
|
|
event.modifiers = aEvent->modifiers;
|
|
event.buttons = aEvent->buttons;
|
|
event.isHorizontal = (aDeltaDirection == DELTA_DIRECTION_X);
|
|
event.delta = aPixelDelta;
|
|
event.inputSource = aEvent->inputSource;
|
|
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
nsEventDispatcher::Dispatch(targetContent, aTargetFrame->PresContext(),
|
|
&event, nullptr, &status);
|
|
aState.mDefaultPrevented =
|
|
event.mFlags.mDefaultPrevented || status == nsEventStatus_eConsumeNoDefault;
|
|
aState.mDefaultPreventedByContent = event.mFlags.mDefaultPreventedByContent;
|
|
}
|
|
|
|
nsIScrollableFrame*
|
|
nsEventStateManager::ComputeScrollTarget(nsIFrame* aTargetFrame,
|
|
WidgetWheelEvent* aEvent,
|
|
ComputeScrollTargetOptions aOptions)
|
|
{
|
|
return ComputeScrollTarget(aTargetFrame, aEvent->deltaX, aEvent->deltaY,
|
|
aEvent, aOptions);
|
|
}
|
|
|
|
// Overload ComputeScrollTarget method to allow passing "test" dx and dy when looking
|
|
// for which scrollbarowners to activate when two finger down on trackpad
|
|
// and before any actual motion
|
|
nsIScrollableFrame*
|
|
nsEventStateManager::ComputeScrollTarget(nsIFrame* aTargetFrame,
|
|
double aDirectionX,
|
|
double aDirectionY,
|
|
WidgetWheelEvent* aEvent,
|
|
ComputeScrollTargetOptions aOptions)
|
|
{
|
|
if (aOptions & PREFER_MOUSE_WHEEL_TRANSACTION) {
|
|
// If the user recently scrolled with the mousewheel, then they probably
|
|
// want to scroll the same view as before instead of the view under the
|
|
// cursor. nsMouseWheelTransaction tracks the frame currently being
|
|
// scrolled with the mousewheel. We consider the transaction ended when the
|
|
// mouse moves more than "mousewheel.transaction.ignoremovedelay"
|
|
// milliseconds after the last scroll operation, or any time the mouse moves
|
|
// out of the frame, or when more than "mousewheel.transaction.timeout"
|
|
// milliseconds have passed after the last operation, even if the mouse
|
|
// hasn't moved.
|
|
nsIFrame* lastScrollFrame = nsMouseWheelTransaction::GetTargetFrame();
|
|
if (lastScrollFrame) {
|
|
nsIScrollableFrame* frameToScroll =
|
|
lastScrollFrame->GetScrollTargetFrame();
|
|
if (frameToScroll) {
|
|
return frameToScroll;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If the event doesn't cause scroll actually, we cannot find scroll target
|
|
// because we check if the event can cause scroll actually on each found
|
|
// scrollable frame.
|
|
if (!aDirectionX && !aDirectionY) {
|
|
return nullptr;
|
|
}
|
|
|
|
bool checkIfScrollableX =
|
|
aDirectionX && (aOptions & PREFER_ACTUAL_SCROLLABLE_TARGET_ALONG_X_AXIS);
|
|
bool checkIfScrollableY =
|
|
aDirectionY && (aOptions & PREFER_ACTUAL_SCROLLABLE_TARGET_ALONG_Y_AXIS);
|
|
|
|
nsIScrollableFrame* frameToScroll = nullptr;
|
|
nsIFrame* scrollFrame =
|
|
!(aOptions & START_FROM_PARENT) ? aTargetFrame :
|
|
GetParentFrameToScroll(aTargetFrame);
|
|
for (; scrollFrame; scrollFrame = GetParentFrameToScroll(scrollFrame)) {
|
|
// Check whether the frame wants to provide us with a scrollable view.
|
|
frameToScroll = scrollFrame->GetScrollTargetFrame();
|
|
if (!frameToScroll) {
|
|
continue;
|
|
}
|
|
|
|
// Don't scroll vertically by mouse-wheel on a single-line text control.
|
|
if (checkIfScrollableY) {
|
|
nsIContent* c = scrollFrame->GetContent();
|
|
nsCOMPtr<nsITextControlElement> ctrl =
|
|
do_QueryInterface(c->IsInAnonymousSubtree() ? c->GetBindingParent() : c);
|
|
if (ctrl && ctrl->IsSingleLineTextControl()) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (!checkIfScrollableX && !checkIfScrollableY) {
|
|
return frameToScroll;
|
|
}
|
|
|
|
ScrollbarStyles ss = frameToScroll->GetScrollbarStyles();
|
|
bool hiddenForV = (NS_STYLE_OVERFLOW_HIDDEN == ss.mVertical);
|
|
bool hiddenForH = (NS_STYLE_OVERFLOW_HIDDEN == ss.mHorizontal);
|
|
if ((hiddenForV && hiddenForH) ||
|
|
(checkIfScrollableY && !checkIfScrollableX && hiddenForV) ||
|
|
(checkIfScrollableX && !checkIfScrollableY && hiddenForH)) {
|
|
continue;
|
|
}
|
|
|
|
// For default action, we should climb up the tree if cannot scroll it
|
|
// by the event actually.
|
|
bool canScroll = CanScrollOn(frameToScroll, aDirectionX, aDirectionY);
|
|
// Comboboxes need special care.
|
|
nsIComboboxControlFrame* comboBox = do_QueryFrame(scrollFrame);
|
|
if (comboBox) {
|
|
if (comboBox->IsDroppedDown()) {
|
|
// Don't propagate to parent when drop down menu is active.
|
|
return canScroll ? frameToScroll : nullptr;
|
|
}
|
|
// Always propagate when not dropped down (even if focused).
|
|
continue;
|
|
}
|
|
|
|
if (canScroll) {
|
|
return frameToScroll;
|
|
}
|
|
}
|
|
|
|
nsIFrame* newFrame = nsLayoutUtils::GetCrossDocParentFrame(
|
|
aTargetFrame->PresContext()->FrameManager()->GetRootFrame());
|
|
aOptions =
|
|
static_cast<ComputeScrollTargetOptions>(aOptions & ~START_FROM_PARENT);
|
|
return newFrame ? ComputeScrollTarget(newFrame, aEvent, aOptions) : nullptr;
|
|
}
|
|
|
|
nsSize
|
|
nsEventStateManager::GetScrollAmount(nsPresContext* aPresContext,
|
|
WidgetWheelEvent* aEvent,
|
|
nsIScrollableFrame* aScrollableFrame)
|
|
{
|
|
MOZ_ASSERT(aPresContext);
|
|
MOZ_ASSERT(aEvent);
|
|
|
|
bool isPage = (aEvent->deltaMode == nsIDOMWheelEvent::DOM_DELTA_PAGE);
|
|
if (aScrollableFrame) {
|
|
return isPage ? aScrollableFrame->GetPageScrollAmount() :
|
|
aScrollableFrame->GetLineScrollAmount();
|
|
}
|
|
|
|
// If there is no scrollable frame and page scrolling, use view port size.
|
|
if (isPage) {
|
|
return aPresContext->GetVisibleArea().Size();
|
|
}
|
|
|
|
// If there is no scrollable frame, we should use root frame's information.
|
|
nsIFrame* rootFrame = aPresContext->PresShell()->GetRootFrame();
|
|
if (!rootFrame) {
|
|
return nsSize(0, 0);
|
|
}
|
|
nsRefPtr<nsFontMetrics> fm;
|
|
nsLayoutUtils::GetFontMetricsForFrame(rootFrame, getter_AddRefs(fm),
|
|
nsLayoutUtils::FontSizeInflationFor(rootFrame));
|
|
NS_ENSURE_TRUE(fm, nsSize(0, 0));
|
|
return nsSize(fm->AveCharWidth(), fm->MaxHeight());
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::DoScrollText(nsIScrollableFrame* aScrollableFrame,
|
|
WidgetWheelEvent* aEvent)
|
|
{
|
|
MOZ_ASSERT(aScrollableFrame);
|
|
MOZ_ASSERT(aEvent);
|
|
|
|
nsIFrame* scrollFrame = do_QueryFrame(aScrollableFrame);
|
|
MOZ_ASSERT(scrollFrame);
|
|
nsWeakFrame scrollFrameWeak(scrollFrame);
|
|
|
|
nsIFrame* lastScrollFrame = nsMouseWheelTransaction::GetTargetFrame();
|
|
if (!lastScrollFrame) {
|
|
nsMouseWheelTransaction::BeginTransaction(scrollFrame, aEvent);
|
|
} else if (lastScrollFrame != scrollFrame) {
|
|
nsMouseWheelTransaction::EndTransaction();
|
|
nsMouseWheelTransaction::BeginTransaction(scrollFrame, aEvent);
|
|
} else {
|
|
nsMouseWheelTransaction::UpdateTransaction(aEvent);
|
|
}
|
|
|
|
// When the scroll event will not scroll any views, UpdateTransaction
|
|
// fired MozMouseScrollFailed event which is for automated testing.
|
|
// In the event handler, the target frame might be destroyed. Then,
|
|
// we should not try scrolling anything.
|
|
if (!scrollFrameWeak.IsAlive()) {
|
|
nsMouseWheelTransaction::EndTransaction();
|
|
return;
|
|
}
|
|
|
|
// Default action's actual scroll amount should be computed from device
|
|
// pixels.
|
|
nsPresContext* pc = scrollFrame->PresContext();
|
|
nsSize scrollAmount = GetScrollAmount(pc, aEvent, aScrollableFrame);
|
|
nsIntSize scrollAmountInDevPixels(
|
|
pc->AppUnitsToDevPixels(scrollAmount.width),
|
|
pc->AppUnitsToDevPixels(scrollAmount.height));
|
|
nsIntPoint actualDevPixelScrollAmount =
|
|
DeltaAccumulator::GetInstance()->
|
|
ComputeScrollAmountForDefaultAction(aEvent, scrollAmountInDevPixels);
|
|
|
|
// Don't scroll around the axis whose overflow style is hidden.
|
|
ScrollbarStyles overflowStyle = aScrollableFrame->GetScrollbarStyles();
|
|
if (overflowStyle.mHorizontal == NS_STYLE_OVERFLOW_HIDDEN) {
|
|
actualDevPixelScrollAmount.x = 0;
|
|
}
|
|
if (overflowStyle.mVertical == NS_STYLE_OVERFLOW_HIDDEN) {
|
|
actualDevPixelScrollAmount.y = 0;
|
|
}
|
|
|
|
nsIAtom* origin = nullptr;
|
|
switch (aEvent->deltaMode) {
|
|
case nsIDOMWheelEvent::DOM_DELTA_LINE:
|
|
origin = nsGkAtoms::mouseWheel;
|
|
break;
|
|
case nsIDOMWheelEvent::DOM_DELTA_PAGE:
|
|
origin = nsGkAtoms::pages;
|
|
break;
|
|
case nsIDOMWheelEvent::DOM_DELTA_PIXEL:
|
|
origin = nsGkAtoms::pixels;
|
|
break;
|
|
default:
|
|
MOZ_CRASH("Invalid deltaMode value comes");
|
|
}
|
|
|
|
// We shouldn't scroll more one page at once except when over one page scroll
|
|
// is allowed for the event.
|
|
nsSize pageSize = aScrollableFrame->GetPageScrollAmount();
|
|
nsIntSize devPixelPageSize(pc->AppUnitsToDevPixels(pageSize.width),
|
|
pc->AppUnitsToDevPixels(pageSize.height));
|
|
if (!WheelPrefs::GetInstance()->IsOverOnePageScrollAllowedX(aEvent) &&
|
|
DeprecatedAbs(actualDevPixelScrollAmount.x) > devPixelPageSize.width) {
|
|
actualDevPixelScrollAmount.x =
|
|
(actualDevPixelScrollAmount.x >= 0) ? devPixelPageSize.width :
|
|
-devPixelPageSize.width;
|
|
}
|
|
|
|
if (!WheelPrefs::GetInstance()->IsOverOnePageScrollAllowedY(aEvent) &&
|
|
DeprecatedAbs(actualDevPixelScrollAmount.y) > devPixelPageSize.height) {
|
|
actualDevPixelScrollAmount.y =
|
|
(actualDevPixelScrollAmount.y >= 0) ? devPixelPageSize.height :
|
|
-devPixelPageSize.height;
|
|
}
|
|
|
|
bool isDeltaModePixel =
|
|
(aEvent->deltaMode == nsIDOMWheelEvent::DOM_DELTA_PIXEL);
|
|
|
|
nsIScrollableFrame::ScrollMode mode;
|
|
switch (aEvent->scrollType) {
|
|
case WidgetWheelEvent::SCROLL_DEFAULT:
|
|
if (isDeltaModePixel) {
|
|
mode = nsIScrollableFrame::NORMAL;
|
|
} else {
|
|
mode = nsIScrollableFrame::SMOOTH;
|
|
}
|
|
break;
|
|
case WidgetWheelEvent::SCROLL_SYNCHRONOUSLY:
|
|
mode = nsIScrollableFrame::INSTANT;
|
|
break;
|
|
case WidgetWheelEvent::SCROLL_ASYNCHRONOUSELY:
|
|
mode = nsIScrollableFrame::NORMAL;
|
|
break;
|
|
case WidgetWheelEvent::SCROLL_SMOOTHLY:
|
|
mode = nsIScrollableFrame::SMOOTH;
|
|
break;
|
|
default:
|
|
MOZ_CRASH("Invalid scrollType value comes");
|
|
}
|
|
|
|
nsIntPoint overflow;
|
|
aScrollableFrame->ScrollBy(actualDevPixelScrollAmount,
|
|
nsIScrollableFrame::DEVICE_PIXELS,
|
|
mode, &overflow, origin);
|
|
|
|
if (!scrollFrameWeak.IsAlive()) {
|
|
// If the scroll causes changing the layout, we can think that the event
|
|
// has been completely consumed by the content. Then, users probably don't
|
|
// want additional action.
|
|
aEvent->overflowDeltaX = aEvent->overflowDeltaY = 0;
|
|
} else if (isDeltaModePixel) {
|
|
aEvent->overflowDeltaX = overflow.x;
|
|
aEvent->overflowDeltaY = overflow.y;
|
|
} else {
|
|
aEvent->overflowDeltaX =
|
|
static_cast<double>(overflow.x) / scrollAmountInDevPixels.width;
|
|
aEvent->overflowDeltaY =
|
|
static_cast<double>(overflow.y) / scrollAmountInDevPixels.height;
|
|
}
|
|
|
|
// If CSS overflow properties caused not to scroll, the overflowDelta* values
|
|
// should be same as delta* values since they may be used as gesture event by
|
|
// widget. However, if there is another scrollable element in the ancestor
|
|
// along the axis, probably users don't want the operation to cause
|
|
// additional action such as moving history. In such case, overflowDelta
|
|
// values should stay zero.
|
|
if (scrollFrameWeak.IsAlive()) {
|
|
if (aEvent->deltaX &&
|
|
overflowStyle.mHorizontal == NS_STYLE_OVERFLOW_HIDDEN &&
|
|
!ComputeScrollTarget(scrollFrame, aEvent,
|
|
COMPUTE_SCROLLABLE_ANCESTOR_ALONG_X_AXIS)) {
|
|
aEvent->overflowDeltaX = aEvent->deltaX;
|
|
}
|
|
if (aEvent->deltaY &&
|
|
overflowStyle.mVertical == NS_STYLE_OVERFLOW_HIDDEN &&
|
|
!ComputeScrollTarget(scrollFrame, aEvent,
|
|
COMPUTE_SCROLLABLE_ANCESTOR_ALONG_Y_AXIS)) {
|
|
aEvent->overflowDeltaY = aEvent->deltaY;
|
|
}
|
|
}
|
|
|
|
NS_ASSERTION(aEvent->overflowDeltaX == 0 ||
|
|
(aEvent->overflowDeltaX > 0) == (aEvent->deltaX > 0),
|
|
"The sign of overflowDeltaX is different from the scroll direction");
|
|
NS_ASSERTION(aEvent->overflowDeltaY == 0 ||
|
|
(aEvent->overflowDeltaY > 0) == (aEvent->deltaY > 0),
|
|
"The sign of overflowDeltaY is different from the scroll direction");
|
|
|
|
WheelPrefs::GetInstance()->CancelApplyingUserPrefsFromOverflowDelta(aEvent);
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::DecideGestureEvent(WidgetGestureNotifyEvent* aEvent,
|
|
nsIFrame* targetFrame)
|
|
{
|
|
|
|
NS_ASSERTION(aEvent->message == NS_GESTURENOTIFY_EVENT_START,
|
|
"DecideGestureEvent called with a non-gesture event");
|
|
|
|
/* Check the ancestor tree to decide if any frame is willing* to receive
|
|
* a MozPixelScroll event. If that's the case, the current touch gesture
|
|
* will be used as a pan gesture; otherwise it will be a regular
|
|
* mousedown/mousemove/click event.
|
|
*
|
|
* *willing: determine if it makes sense to pan the element using scroll events:
|
|
* - For web content: if there are any visible scrollbars on the touch point
|
|
* - For XUL: if it's an scrollable element that can currently scroll in some
|
|
* direction.
|
|
*
|
|
* Note: we'll have to one-off various cases to ensure a good usable behavior
|
|
*/
|
|
WidgetGestureNotifyEvent::ePanDirection panDirection =
|
|
WidgetGestureNotifyEvent::ePanNone;
|
|
bool displayPanFeedback = false;
|
|
for (nsIFrame* current = targetFrame; current;
|
|
current = nsLayoutUtils::GetCrossDocParentFrame(current)) {
|
|
|
|
nsIAtom* currentFrameType = current->GetType();
|
|
|
|
// Scrollbars should always be draggable
|
|
if (currentFrameType == nsGkAtoms::scrollbarFrame) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanNone;
|
|
break;
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
// Special check for trees
|
|
nsTreeBodyFrame* treeFrame = do_QueryFrame(current);
|
|
if (treeFrame) {
|
|
if (treeFrame->GetHorizontalOverflow()) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanHorizontal;
|
|
}
|
|
if (treeFrame->GetVerticalOverflow()) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanVertical;
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
nsIScrollableFrame* scrollableFrame = do_QueryFrame(current);
|
|
if (scrollableFrame) {
|
|
if (current->IsFrameOfType(nsIFrame::eXULBox)) {
|
|
displayPanFeedback = true;
|
|
|
|
nsRect scrollRange = scrollableFrame->GetScrollRange();
|
|
bool canScrollHorizontally = scrollRange.width > 0;
|
|
|
|
if (targetFrame->GetType() == nsGkAtoms::menuFrame) {
|
|
// menu frames report horizontal scroll when they have submenus
|
|
// and we don't want that
|
|
canScrollHorizontally = false;
|
|
displayPanFeedback = false;
|
|
}
|
|
|
|
// Vertical panning has priority over horizontal panning, so
|
|
// when vertical movement is possible we can just finish the loop.
|
|
if (scrollRange.height > 0) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanVertical;
|
|
break;
|
|
}
|
|
|
|
if (canScrollHorizontally) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanHorizontal;
|
|
displayPanFeedback = false;
|
|
}
|
|
} else { //Not a XUL box
|
|
uint32_t scrollbarVisibility = scrollableFrame->GetScrollbarVisibility();
|
|
|
|
//Check if we have visible scrollbars
|
|
if (scrollbarVisibility & nsIScrollableFrame::VERTICAL) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanVertical;
|
|
displayPanFeedback = true;
|
|
break;
|
|
}
|
|
|
|
if (scrollbarVisibility & nsIScrollableFrame::HORIZONTAL) {
|
|
panDirection = WidgetGestureNotifyEvent::ePanHorizontal;
|
|
displayPanFeedback = true;
|
|
}
|
|
}
|
|
} //scrollableFrame
|
|
} //ancestor chain
|
|
|
|
aEvent->displayPanFeedback = displayPanFeedback;
|
|
aEvent->panDirection = panDirection;
|
|
}
|
|
|
|
#ifdef XP_MACOSX
|
|
static bool
|
|
NodeAllowsClickThrough(nsINode* aNode)
|
|
{
|
|
while (aNode) {
|
|
if (aNode->IsElement() && aNode->AsElement()->IsXUL()) {
|
|
mozilla::dom::Element* element = aNode->AsElement();
|
|
static nsIContent::AttrValuesArray strings[] =
|
|
{&nsGkAtoms::always, &nsGkAtoms::never, nullptr};
|
|
switch (element->FindAttrValueIn(kNameSpaceID_None, nsGkAtoms::clickthrough,
|
|
strings, eCaseMatters)) {
|
|
case 0:
|
|
return true;
|
|
case 1:
|
|
return false;
|
|
}
|
|
}
|
|
aNode = nsContentUtils::GetCrossDocParentNode(aNode);
|
|
}
|
|
return true;
|
|
}
|
|
#endif
|
|
|
|
nsresult
|
|
nsEventStateManager::PostHandleEvent(nsPresContext* aPresContext,
|
|
WidgetEvent* aEvent,
|
|
nsIFrame* aTargetFrame,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
NS_ENSURE_ARG(aPresContext);
|
|
NS_ENSURE_ARG_POINTER(aStatus);
|
|
|
|
bool dispatchedToContentProcess = HandleCrossProcessEvent(aEvent,
|
|
aTargetFrame,
|
|
aStatus);
|
|
|
|
mCurrentTarget = aTargetFrame;
|
|
mCurrentTargetContent = nullptr;
|
|
|
|
// Most of the events we handle below require a frame.
|
|
// Add special cases here.
|
|
if (!mCurrentTarget && aEvent->message != NS_MOUSE_BUTTON_UP &&
|
|
aEvent->message != NS_MOUSE_BUTTON_DOWN) {
|
|
return NS_OK;
|
|
}
|
|
|
|
//Keep the prescontext alive, we might need it after event dispatch
|
|
nsRefPtr<nsPresContext> presContext = aPresContext;
|
|
nsresult ret = NS_OK;
|
|
|
|
switch (aEvent->message) {
|
|
case NS_MOUSE_BUTTON_DOWN:
|
|
{
|
|
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
|
|
if (mouseEvent->button == WidgetMouseEvent::eLeftButton &&
|
|
!sNormalLMouseEventInProcess) {
|
|
// We got a mouseup event while a mousedown event was being processed.
|
|
// Make sure that the capturing content is cleared.
|
|
nsIPresShell::SetCapturingContent(nullptr, 0);
|
|
break;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> activeContent;
|
|
if (nsEventStatus_eConsumeNoDefault != *aStatus) {
|
|
nsCOMPtr<nsIContent> newFocus;
|
|
bool suppressBlur = false;
|
|
if (mCurrentTarget) {
|
|
mCurrentTarget->GetContentForEvent(aEvent, getter_AddRefs(newFocus));
|
|
const nsStyleUserInterface* ui = mCurrentTarget->StyleUserInterface();
|
|
activeContent = mCurrentTarget->GetContent();
|
|
|
|
// In some cases, we do not want to even blur the current focused
|
|
// element. Those cases are:
|
|
// 1. -moz-user-focus CSS property is set to 'ignore';
|
|
// 2. Element with NS_EVENT_STATE_DISABLED
|
|
// (aka :disabled pseudo-class for HTML element);
|
|
// 3. XUL control element has the disabled property set to 'true'.
|
|
//
|
|
// We can't use nsIFrame::IsFocusable() because we want to blur when
|
|
// we click on a visibility: none element.
|
|
// We can't use nsIContent::IsFocusable() because we want to blur when
|
|
// we click on a non-focusable element like a <div>.
|
|
// We have to use |aEvent->target| to not make sure we do not check an
|
|
// anonymous node of the targeted element.
|
|
suppressBlur = (ui->mUserFocus == NS_STYLE_USER_FOCUS_IGNORE);
|
|
|
|
if (!suppressBlur) {
|
|
nsCOMPtr<Element> element = do_QueryInterface(aEvent->target);
|
|
suppressBlur = element &&
|
|
element->State().HasState(NS_EVENT_STATE_DISABLED);
|
|
}
|
|
|
|
if (!suppressBlur) {
|
|
nsCOMPtr<nsIDOMXULControlElement> xulControl =
|
|
do_QueryInterface(aEvent->target);
|
|
if (xulControl) {
|
|
bool disabled;
|
|
xulControl->GetDisabled(&disabled);
|
|
suppressBlur = disabled;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!suppressBlur) {
|
|
suppressBlur = nsContentUtils::IsUserFocusIgnored(activeContent);
|
|
}
|
|
|
|
nsIFrame* currFrame = mCurrentTarget;
|
|
|
|
// When a root content which isn't editable but has an editable HTML
|
|
// <body> element is clicked, we should redirect the focus to the
|
|
// the <body> element. E.g., when an user click bottom of the editor
|
|
// where is outside of the <body> element, the <body> should be focused
|
|
// and the user can edit immediately after that.
|
|
//
|
|
// NOTE: The newFocus isn't editable that also means it's not in
|
|
// designMode. In designMode, all contents are not focusable.
|
|
if (newFocus && !newFocus->IsEditable()) {
|
|
nsIDocument *doc = newFocus->GetCurrentDoc();
|
|
if (doc && newFocus == doc->GetRootElement()) {
|
|
nsIContent *bodyContent =
|
|
nsLayoutUtils::GetEditableRootContentByContentEditable(doc);
|
|
if (bodyContent) {
|
|
nsIFrame* bodyFrame = bodyContent->GetPrimaryFrame();
|
|
if (bodyFrame) {
|
|
currFrame = bodyFrame;
|
|
newFocus = bodyContent;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// When the mouse is pressed, the default action is to focus the
|
|
// target. Look for the nearest enclosing focusable frame.
|
|
while (currFrame) {
|
|
// If the mousedown happened inside a popup, don't
|
|
// try to set focus on one of its containing elements
|
|
const nsStyleDisplay* display = currFrame->StyleDisplay();
|
|
if (display->mDisplay == NS_STYLE_DISPLAY_POPUP) {
|
|
newFocus = nullptr;
|
|
break;
|
|
}
|
|
|
|
int32_t tabIndexUnused;
|
|
if (currFrame->IsFocusable(&tabIndexUnused, true)) {
|
|
newFocus = currFrame->GetContent();
|
|
nsCOMPtr<nsIDOMElement> domElement(do_QueryInterface(newFocus));
|
|
if (domElement)
|
|
break;
|
|
}
|
|
currFrame = currFrame->GetParent();
|
|
}
|
|
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm) {
|
|
// if something was found to focus, focus it. Otherwise, if the
|
|
// element that was clicked doesn't have -moz-user-focus: ignore,
|
|
// clear the existing focus. For -moz-user-focus: ignore, the focus
|
|
// is just left as is.
|
|
// Another effect of mouse clicking, handled in nsSelection, is that
|
|
// it should update the caret position to where the mouse was
|
|
// clicked. Because the focus is cleared when clicking on a
|
|
// non-focusable node, the next press of the tab key will cause
|
|
// focus to be shifted from the caret position instead of the root.
|
|
if (newFocus && currFrame) {
|
|
// use the mouse flag and the noscroll flag so that the content
|
|
// doesn't unexpectedly scroll when clicking an element that is
|
|
// only hald visible
|
|
nsCOMPtr<nsIDOMElement> newFocusElement = do_QueryInterface(newFocus);
|
|
fm->SetFocus(newFocusElement, nsIFocusManager::FLAG_BYMOUSE |
|
|
nsIFocusManager::FLAG_NOSCROLL);
|
|
}
|
|
else if (!suppressBlur) {
|
|
// clear the focus within the frame and then set it as the
|
|
// focused frame
|
|
EnsureDocument(mPresContext);
|
|
if (mDocument) {
|
|
#ifdef XP_MACOSX
|
|
if (!activeContent || !activeContent->IsXUL())
|
|
#endif
|
|
fm->ClearFocus(mDocument->GetWindow());
|
|
fm->SetFocusedWindow(mDocument->GetWindow());
|
|
}
|
|
}
|
|
}
|
|
|
|
// The rest is left button-specific.
|
|
if (mouseEvent->button != WidgetMouseEvent::eLeftButton) {
|
|
break;
|
|
}
|
|
|
|
if (activeContent) {
|
|
// The nearest enclosing element goes into the
|
|
// :active state. If we fail the QI to DOMElement,
|
|
// then we know we're only a node, and that we need
|
|
// to obtain our parent element and put it into :active
|
|
// instead.
|
|
nsCOMPtr<nsIDOMElement> elt(do_QueryInterface(activeContent));
|
|
if (!elt) {
|
|
nsIContent* par = activeContent->GetParent();
|
|
if (par)
|
|
activeContent = par;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// if we're here, the event handler returned false, so stop
|
|
// any of our own processing of a drag. Workaround for bug 43258.
|
|
StopTrackingDragGesture();
|
|
|
|
// When the event was cancelled, there is currently a chrome document
|
|
// focused and a mousedown just occurred on a content document, ensure
|
|
// that the window that was clicked is focused.
|
|
EnsureDocument(mPresContext);
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (mDocument && fm) {
|
|
nsCOMPtr<nsIDOMWindow> currentWindow;
|
|
fm->GetFocusedWindow(getter_AddRefs(currentWindow));
|
|
if (currentWindow && mDocument->GetWindow() &&
|
|
currentWindow != mDocument->GetWindow() &&
|
|
!nsContentUtils::IsChromeDoc(mDocument)) {
|
|
nsCOMPtr<nsIDOMWindow> currentTop;
|
|
nsCOMPtr<nsIDOMWindow> newTop;
|
|
currentWindow->GetTop(getter_AddRefs(currentTop));
|
|
mDocument->GetWindow()->GetTop(getter_AddRefs(newTop));
|
|
nsCOMPtr<nsPIDOMWindow> win = do_QueryInterface(currentWindow);
|
|
nsCOMPtr<nsIDocument> currentDoc = win->GetExtantDoc();
|
|
if (nsContentUtils::IsChromeDoc(currentDoc) ||
|
|
(currentTop && newTop && currentTop != newTop)) {
|
|
fm->SetFocusedWindow(mDocument->GetWindow());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
SetActiveManager(this, activeContent);
|
|
}
|
|
break;
|
|
case NS_POINTER_CANCEL:
|
|
case NS_POINTER_UP: {
|
|
WidgetPointerEvent* pointerEvent = aEvent->AsPointerEvent();
|
|
// After UP/Cancel Touch pointers become invalid so we can remove relevant helper from Table
|
|
// Mouse/Pen pointers are valid all the time (not only between down/up)
|
|
if (pointerEvent->inputSource == nsIDOMMouseEvent::MOZ_SOURCE_TOUCH) {
|
|
mPointersEnterLeaveHelper.Remove(pointerEvent->pointerId);
|
|
}
|
|
break;
|
|
}
|
|
case NS_MOUSE_BUTTON_UP:
|
|
{
|
|
ClearGlobalActiveContent(this);
|
|
if (IsMouseEventReal(aEvent)) {
|
|
if (!mCurrentTarget) {
|
|
GetEventTarget();
|
|
}
|
|
// Make sure to dispatch the click even if there is no frame for
|
|
// the current target element. This is required for Web compatibility.
|
|
ret = CheckForAndDispatchClick(presContext, aEvent->AsMouseEvent(),
|
|
aStatus);
|
|
}
|
|
|
|
nsIPresShell *shell = presContext->GetPresShell();
|
|
if (shell) {
|
|
nsRefPtr<nsFrameSelection> frameSelection = shell->FrameSelection();
|
|
frameSelection->SetMouseDownState(false);
|
|
}
|
|
}
|
|
break;
|
|
case NS_WHEEL_STOP:
|
|
{
|
|
MOZ_ASSERT(aEvent->mFlags.mIsTrusted);
|
|
nsScrollbarsForWheel::MayInactivate();
|
|
}
|
|
break;
|
|
case NS_WHEEL_WHEEL:
|
|
case NS_WHEEL_START:
|
|
{
|
|
MOZ_ASSERT(aEvent->mFlags.mIsTrusted);
|
|
|
|
if (*aStatus == nsEventStatus_eConsumeNoDefault) {
|
|
nsScrollbarsForWheel::Inactivate();
|
|
break;
|
|
}
|
|
|
|
WidgetWheelEvent* wheelEvent = aEvent->AsWheelEvent();
|
|
switch (WheelPrefs::GetInstance()->ComputeActionFor(wheelEvent)) {
|
|
case WheelPrefs::ACTION_SCROLL: {
|
|
// For scrolling of default action, we should honor the mouse wheel
|
|
// transaction.
|
|
|
|
nsScrollbarsForWheel::PrepareToScrollText(this, aTargetFrame, wheelEvent);
|
|
|
|
if (aEvent->message != NS_WHEEL_WHEEL ||
|
|
(!wheelEvent->deltaX && !wheelEvent->deltaY)) {
|
|
break;
|
|
}
|
|
|
|
nsIScrollableFrame* scrollTarget =
|
|
ComputeScrollTarget(aTargetFrame, wheelEvent,
|
|
COMPUTE_DEFAULT_ACTION_TARGET);
|
|
|
|
nsScrollbarsForWheel::SetActiveScrollTarget(scrollTarget);
|
|
|
|
nsIFrame* rootScrollFrame = !aTargetFrame ? nullptr :
|
|
aTargetFrame->PresContext()->PresShell()->GetRootScrollFrame();
|
|
nsIScrollableFrame* rootScrollableFrame = nullptr;
|
|
if (rootScrollFrame) {
|
|
rootScrollableFrame = do_QueryFrame(rootScrollFrame);
|
|
}
|
|
if (!scrollTarget || scrollTarget == rootScrollableFrame) {
|
|
wheelEvent->mViewPortIsOverscrolled = true;
|
|
}
|
|
wheelEvent->overflowDeltaX = wheelEvent->deltaX;
|
|
wheelEvent->overflowDeltaY = wheelEvent->deltaY;
|
|
WheelPrefs::GetInstance()->
|
|
CancelApplyingUserPrefsFromOverflowDelta(wheelEvent);
|
|
if (scrollTarget) {
|
|
DoScrollText(scrollTarget, wheelEvent);
|
|
} else {
|
|
nsMouseWheelTransaction::EndTransaction();
|
|
nsScrollbarsForWheel::Inactivate();
|
|
}
|
|
break;
|
|
}
|
|
case WheelPrefs::ACTION_HISTORY: {
|
|
// If this event doesn't cause NS_MOUSE_SCROLL event or the direction
|
|
// is oblique, don't perform history back/forward.
|
|
int32_t intDelta = wheelEvent->GetPreferredIntDelta();
|
|
if (!intDelta) {
|
|
break;
|
|
}
|
|
DoScrollHistory(intDelta);
|
|
break;
|
|
}
|
|
case WheelPrefs::ACTION_ZOOM: {
|
|
// If this event doesn't cause NS_MOUSE_SCROLL event or the direction
|
|
// is oblique, don't perform zoom in/out.
|
|
int32_t intDelta = wheelEvent->GetPreferredIntDelta();
|
|
if (!intDelta) {
|
|
break;
|
|
}
|
|
DoScrollZoom(aTargetFrame, intDelta);
|
|
break;
|
|
}
|
|
case WheelPrefs::ACTION_NONE:
|
|
default:
|
|
// If we don't handle the wheel event, all of the delta values must
|
|
// be overflown delta values.
|
|
wheelEvent->overflowDeltaX = wheelEvent->deltaX;
|
|
wheelEvent->overflowDeltaY = wheelEvent->deltaY;
|
|
WheelPrefs::GetInstance()->
|
|
CancelApplyingUserPrefsFromOverflowDelta(wheelEvent);
|
|
break;
|
|
}
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
}
|
|
break;
|
|
|
|
case NS_GESTURENOTIFY_EVENT_START:
|
|
{
|
|
if (nsEventStatus_eConsumeNoDefault != *aStatus) {
|
|
DecideGestureEvent(aEvent->AsGestureNotifyEvent(), mCurrentTarget);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case NS_DRAGDROP_ENTER:
|
|
case NS_DRAGDROP_OVER:
|
|
{
|
|
NS_ASSERTION(aEvent->eventStructType == NS_DRAG_EVENT, "Expected a drag event");
|
|
|
|
nsCOMPtr<nsIDragSession> dragSession = nsContentUtils::GetDragSession();
|
|
if (!dragSession)
|
|
break;
|
|
|
|
// Reset the flag.
|
|
dragSession->SetOnlyChromeDrop(false);
|
|
if (mPresContext) {
|
|
EnsureDocument(mPresContext);
|
|
}
|
|
bool isChromeDoc = nsContentUtils::IsChromeDoc(mDocument);
|
|
|
|
// the initial dataTransfer is the one from the dragstart event that
|
|
// was set on the dragSession when the drag began.
|
|
nsCOMPtr<nsIDOMDataTransfer> dataTransfer;
|
|
nsCOMPtr<nsIDOMDataTransfer> initialDataTransfer;
|
|
dragSession->GetDataTransfer(getter_AddRefs(initialDataTransfer));
|
|
|
|
WidgetDragEvent *dragEvent = aEvent->AsDragEvent();
|
|
|
|
// collect any changes to moz cursor settings stored in the event's
|
|
// data transfer.
|
|
UpdateDragDataTransfer(dragEvent);
|
|
|
|
// cancelling a dragenter or dragover event means that a drop should be
|
|
// allowed, so update the dropEffect and the canDrop state to indicate
|
|
// that a drag is allowed. If the event isn't cancelled, a drop won't be
|
|
// allowed. Essentially, to allow a drop somewhere, specify the effects
|
|
// using the effectAllowed and dropEffect properties in a dragenter or
|
|
// dragover event and cancel the event. To not allow a drop somewhere,
|
|
// don't cancel the event or set the effectAllowed or dropEffect to
|
|
// "none". This way, if the event is just ignored, no drop will be
|
|
// allowed.
|
|
uint32_t dropEffect = nsIDragService::DRAGDROP_ACTION_NONE;
|
|
if (nsEventStatus_eConsumeNoDefault == *aStatus) {
|
|
// if the event has a dataTransfer set, use it.
|
|
if (dragEvent->dataTransfer) {
|
|
// get the dataTransfer and the dropEffect that was set on it
|
|
dataTransfer = do_QueryInterface(dragEvent->dataTransfer);
|
|
dataTransfer->GetDropEffectInt(&dropEffect);
|
|
}
|
|
else {
|
|
// if dragEvent->dataTransfer is null, it means that no attempt was
|
|
// made to access the dataTransfer during the event, yet the event
|
|
// was cancelled. Instead, use the initial data transfer available
|
|
// from the drag session. The drop effect would not have been
|
|
// initialized (which is done in DragEvent::GetDataTransfer),
|
|
// so set it from the drag action. We'll still want to filter it
|
|
// based on the effectAllowed below.
|
|
dataTransfer = initialDataTransfer;
|
|
|
|
uint32_t action;
|
|
dragSession->GetDragAction(&action);
|
|
|
|
// filter the drop effect based on the action. Use UNINITIALIZED as
|
|
// any effect is allowed.
|
|
dropEffect = nsContentUtils::FilterDropEffect(action,
|
|
nsIDragService::DRAGDROP_ACTION_UNINITIALIZED);
|
|
}
|
|
|
|
// At this point, if the dataTransfer is null, it means that the
|
|
// drag was originally started by directly calling the drag service.
|
|
// Just assume that all effects are allowed.
|
|
uint32_t effectAllowed = nsIDragService::DRAGDROP_ACTION_UNINITIALIZED;
|
|
if (dataTransfer)
|
|
dataTransfer->GetEffectAllowedInt(&effectAllowed);
|
|
|
|
// set the drag action based on the drop effect and effect allowed.
|
|
// The drop effect field on the drag transfer object specifies the
|
|
// desired current drop effect. However, it cannot be used if the
|
|
// effectAllowed state doesn't include that type of action. If the
|
|
// dropEffect is "none", then the action will be 'none' so a drop will
|
|
// not be allowed.
|
|
uint32_t action = nsIDragService::DRAGDROP_ACTION_NONE;
|
|
if (effectAllowed == nsIDragService::DRAGDROP_ACTION_UNINITIALIZED ||
|
|
dropEffect & effectAllowed)
|
|
action = dropEffect;
|
|
|
|
if (action == nsIDragService::DRAGDROP_ACTION_NONE)
|
|
dropEffect = nsIDragService::DRAGDROP_ACTION_NONE;
|
|
|
|
// inform the drag session that a drop is allowed on this node.
|
|
dragSession->SetDragAction(action);
|
|
dragSession->SetCanDrop(action != nsIDragService::DRAGDROP_ACTION_NONE);
|
|
|
|
// For now, do this only for dragover.
|
|
//XXXsmaug dragenter needs some more work.
|
|
if (aEvent->message == NS_DRAGDROP_OVER && !isChromeDoc) {
|
|
// Someone has called preventDefault(), check whether is was on
|
|
// content or chrome.
|
|
dragSession->SetOnlyChromeDrop(
|
|
!dragEvent->mDefaultPreventedOnContent);
|
|
}
|
|
} else if (aEvent->message == NS_DRAGDROP_OVER && !isChromeDoc) {
|
|
// No one called preventDefault(), so handle drop only in chrome.
|
|
dragSession->SetOnlyChromeDrop(true);
|
|
}
|
|
|
|
// now set the drop effect in the initial dataTransfer. This ensures
|
|
// that we can get the desired drop effect in the drop event.
|
|
if (initialDataTransfer)
|
|
initialDataTransfer->SetDropEffectInt(dropEffect);
|
|
}
|
|
break;
|
|
|
|
case NS_DRAGDROP_DROP:
|
|
{
|
|
// now fire the dragdrop event, for compatibility with XUL
|
|
if (mCurrentTarget && nsEventStatus_eConsumeNoDefault != *aStatus) {
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
mCurrentTarget->GetContentForEvent(aEvent,
|
|
getter_AddRefs(targetContent));
|
|
|
|
nsCOMPtr<nsIWidget> widget = mCurrentTarget->GetNearestWidget();
|
|
WidgetDragEvent event(aEvent->mFlags.mIsTrusted,
|
|
NS_DRAGDROP_DRAGDROP, widget);
|
|
|
|
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
|
|
event.refPoint = mouseEvent->refPoint;
|
|
if (mouseEvent->widget) {
|
|
event.refPoint += LayoutDeviceIntPoint::FromUntyped(mouseEvent->widget->WidgetToScreenOffset());
|
|
}
|
|
event.refPoint -= LayoutDeviceIntPoint::FromUntyped(widget->WidgetToScreenOffset());
|
|
event.modifiers = mouseEvent->modifiers;
|
|
event.buttons = mouseEvent->buttons;
|
|
event.inputSource = mouseEvent->inputSource;
|
|
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
nsCOMPtr<nsIPresShell> presShell = mPresContext->GetPresShell();
|
|
if (presShell) {
|
|
presShell->HandleEventWithTarget(&event, mCurrentTarget,
|
|
targetContent, &status);
|
|
}
|
|
}
|
|
sLastDragOverFrame = nullptr;
|
|
ClearGlobalActiveContent(this);
|
|
break;
|
|
}
|
|
case NS_DRAGDROP_EXIT:
|
|
// make sure to fire the enter and exit_synth events after the
|
|
// NS_DRAGDROP_EXIT event, otherwise we'll clean up too early
|
|
GenerateDragDropEnterExit(presContext, aEvent->AsDragEvent());
|
|
break;
|
|
|
|
case NS_KEY_UP:
|
|
break;
|
|
|
|
case NS_KEY_PRESS:
|
|
if (nsEventStatus_eConsumeNoDefault != *aStatus) {
|
|
WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
|
|
//This is to prevent keyboard scrolling while alt modifier in use.
|
|
if (!keyEvent->IsAlt()) {
|
|
switch(keyEvent->keyCode) {
|
|
case NS_VK_TAB:
|
|
case NS_VK_F6:
|
|
// Handling the tab event after it was sent to content is bad,
|
|
// because to the FocusManager the remote-browser looks like one
|
|
// element, so we would just move the focus to the next element
|
|
// in chrome, instead of handling it in content.
|
|
if (dispatchedToContentProcess)
|
|
break;
|
|
|
|
EnsureDocument(mPresContext);
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm && mDocument) {
|
|
// Shift focus forward or back depending on shift key
|
|
bool isDocMove =
|
|
keyEvent->IsControl() || keyEvent->keyCode == NS_VK_F6;
|
|
uint32_t dir = keyEvent->IsShift() ?
|
|
(isDocMove ? static_cast<uint32_t>(nsIFocusManager::MOVEFOCUS_BACKWARDDOC) :
|
|
static_cast<uint32_t>(nsIFocusManager::MOVEFOCUS_BACKWARD)) :
|
|
(isDocMove ? static_cast<uint32_t>(nsIFocusManager::MOVEFOCUS_FORWARDDOC) :
|
|
static_cast<uint32_t>(nsIFocusManager::MOVEFOCUS_FORWARD));
|
|
nsCOMPtr<nsIDOMElement> result;
|
|
fm->MoveFocus(mDocument->GetWindow(), nullptr, dir,
|
|
nsIFocusManager::FLAG_BYKEY,
|
|
getter_AddRefs(result));
|
|
}
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case NS_MOUSE_ENTER:
|
|
if (mCurrentTarget) {
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
mCurrentTarget->GetContentForEvent(aEvent, getter_AddRefs(targetContent));
|
|
SetContentState(targetContent, NS_EVENT_STATE_HOVER);
|
|
}
|
|
break;
|
|
|
|
#ifdef XP_MACOSX
|
|
case NS_MOUSE_ACTIVATE:
|
|
if (mCurrentTarget) {
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
mCurrentTarget->GetContentForEvent(aEvent, getter_AddRefs(targetContent));
|
|
if (!NodeAllowsClickThrough(targetContent)) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
}
|
|
}
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
//Reset target frame to null to avoid mistargeting after reentrant event
|
|
mCurrentTarget = nullptr;
|
|
mCurrentTargetContent = nullptr;
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool
|
|
nsEventStateManager::RemoteQueryContentEvent(WidgetEvent* aEvent)
|
|
{
|
|
WidgetQueryContentEvent* queryEvent = aEvent->AsQueryContentEvent();
|
|
if (!IsTargetCrossProcess(queryEvent)) {
|
|
return false;
|
|
}
|
|
// Will not be handled locally, remote the event
|
|
GetCrossProcessTarget()->HandleQueryContentEvent(*queryEvent);
|
|
return true;
|
|
}
|
|
|
|
TabParent*
|
|
nsEventStateManager::GetCrossProcessTarget()
|
|
{
|
|
return TabParent::GetIMETabParent();
|
|
}
|
|
|
|
bool
|
|
nsEventStateManager::IsTargetCrossProcess(WidgetGUIEvent* aEvent)
|
|
{
|
|
// Check to see if there is a focused, editable content in chrome,
|
|
// in that case, do not forward IME events to content
|
|
nsIContent *focusedContent = GetFocusedContent();
|
|
if (focusedContent && focusedContent->IsEditable())
|
|
return false;
|
|
return TabParent::GetIMETabParent() != nullptr;
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::NotifyDestroyPresContext(nsPresContext* aPresContext)
|
|
{
|
|
IMEStateManager::OnDestroyPresContext(aPresContext);
|
|
if (mHoverContent) {
|
|
// Bug 70855: Presentation is going away, possibly for a reframe.
|
|
// Reset the hover state so that if we're recreating the presentation,
|
|
// we won't have the old hover state still set in the new presentation,
|
|
// as if the new presentation is resized, a new element may be hovered.
|
|
SetContentState(nullptr, NS_EVENT_STATE_HOVER);
|
|
}
|
|
mPointersEnterLeaveHelper.Clear();
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::SetPresContext(nsPresContext* aPresContext)
|
|
{
|
|
mPresContext = aPresContext;
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::ClearFrameRefs(nsIFrame* aFrame)
|
|
{
|
|
if (aFrame && aFrame == mCurrentTarget) {
|
|
mCurrentTargetContent = aFrame->GetContent();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::UpdateCursor(nsPresContext* aPresContext,
|
|
WidgetEvent* aEvent,
|
|
nsIFrame* aTargetFrame,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
if (aTargetFrame && IsRemoteTarget(aTargetFrame->GetContent())) {
|
|
return;
|
|
}
|
|
|
|
int32_t cursor = NS_STYLE_CURSOR_DEFAULT;
|
|
imgIContainer* container = nullptr;
|
|
bool haveHotspot = false;
|
|
float hotspotX = 0.0f, hotspotY = 0.0f;
|
|
|
|
//If cursor is locked just use the locked one
|
|
if (mLockCursor) {
|
|
cursor = mLockCursor;
|
|
}
|
|
//If not locked, look for correct cursor
|
|
else if (aTargetFrame) {
|
|
nsIFrame::Cursor framecursor;
|
|
nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent,
|
|
aTargetFrame);
|
|
if (NS_FAILED(aTargetFrame->GetCursor(pt, framecursor)))
|
|
return; // don't update the cursor if we failed to get it from the frame see bug 118877
|
|
cursor = framecursor.mCursor;
|
|
container = framecursor.mContainer;
|
|
haveHotspot = framecursor.mHaveHotspot;
|
|
hotspotX = framecursor.mHotspotX;
|
|
hotspotY = framecursor.mHotspotY;
|
|
}
|
|
|
|
if (Preferences::GetBool("ui.use_activity_cursor", false)) {
|
|
// Check whether or not to show the busy cursor
|
|
nsCOMPtr<nsIDocShell> docShell(aPresContext->GetDocShell());
|
|
if (!docShell) return;
|
|
uint32_t busyFlags = nsIDocShell::BUSY_FLAGS_NONE;
|
|
docShell->GetBusyFlags(&busyFlags);
|
|
|
|
// Show busy cursor everywhere before page loads
|
|
// and just replace the arrow cursor after page starts loading
|
|
if (busyFlags & nsIDocShell::BUSY_FLAGS_BUSY &&
|
|
(cursor == NS_STYLE_CURSOR_AUTO || cursor == NS_STYLE_CURSOR_DEFAULT))
|
|
{
|
|
cursor = NS_STYLE_CURSOR_SPINNING;
|
|
container = nullptr;
|
|
}
|
|
}
|
|
|
|
if (aTargetFrame) {
|
|
SetCursor(cursor, container, haveHotspot, hotspotX, hotspotY,
|
|
aTargetFrame->GetNearestWidget(), false);
|
|
}
|
|
|
|
if (mLockCursor || NS_STYLE_CURSOR_AUTO != cursor) {
|
|
*aStatus = nsEventStatus_eConsumeDoDefault;
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsEventStateManager::SetCursor(int32_t aCursor, imgIContainer* aContainer,
|
|
bool aHaveHotspot,
|
|
float aHotspotX, float aHotspotY,
|
|
nsIWidget* aWidget, bool aLockCursor)
|
|
{
|
|
EnsureDocument(mPresContext);
|
|
NS_ENSURE_TRUE(mDocument, NS_ERROR_FAILURE);
|
|
sMouseOverDocument = mDocument.get();
|
|
|
|
nsCursor c;
|
|
|
|
NS_ENSURE_TRUE(aWidget, NS_ERROR_FAILURE);
|
|
if (aLockCursor) {
|
|
if (NS_STYLE_CURSOR_AUTO != aCursor) {
|
|
mLockCursor = aCursor;
|
|
}
|
|
else {
|
|
//If cursor style is set to auto we unlock the cursor again.
|
|
mLockCursor = 0;
|
|
}
|
|
}
|
|
switch (aCursor) {
|
|
default:
|
|
case NS_STYLE_CURSOR_AUTO:
|
|
case NS_STYLE_CURSOR_DEFAULT:
|
|
c = eCursor_standard;
|
|
break;
|
|
case NS_STYLE_CURSOR_POINTER:
|
|
c = eCursor_hyperlink;
|
|
break;
|
|
case NS_STYLE_CURSOR_CROSSHAIR:
|
|
c = eCursor_crosshair;
|
|
break;
|
|
case NS_STYLE_CURSOR_MOVE:
|
|
c = eCursor_move;
|
|
break;
|
|
case NS_STYLE_CURSOR_TEXT:
|
|
c = eCursor_select;
|
|
break;
|
|
case NS_STYLE_CURSOR_WAIT:
|
|
c = eCursor_wait;
|
|
break;
|
|
case NS_STYLE_CURSOR_HELP:
|
|
c = eCursor_help;
|
|
break;
|
|
case NS_STYLE_CURSOR_N_RESIZE:
|
|
c = eCursor_n_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_S_RESIZE:
|
|
c = eCursor_s_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_W_RESIZE:
|
|
c = eCursor_w_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_E_RESIZE:
|
|
c = eCursor_e_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_NW_RESIZE:
|
|
c = eCursor_nw_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_SE_RESIZE:
|
|
c = eCursor_se_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_NE_RESIZE:
|
|
c = eCursor_ne_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_SW_RESIZE:
|
|
c = eCursor_sw_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_COPY: // CSS3
|
|
c = eCursor_copy;
|
|
break;
|
|
case NS_STYLE_CURSOR_ALIAS:
|
|
c = eCursor_alias;
|
|
break;
|
|
case NS_STYLE_CURSOR_CONTEXT_MENU:
|
|
c = eCursor_context_menu;
|
|
break;
|
|
case NS_STYLE_CURSOR_CELL:
|
|
c = eCursor_cell;
|
|
break;
|
|
case NS_STYLE_CURSOR_GRAB:
|
|
c = eCursor_grab;
|
|
break;
|
|
case NS_STYLE_CURSOR_GRABBING:
|
|
c = eCursor_grabbing;
|
|
break;
|
|
case NS_STYLE_CURSOR_SPINNING:
|
|
c = eCursor_spinning;
|
|
break;
|
|
case NS_STYLE_CURSOR_ZOOM_IN:
|
|
c = eCursor_zoom_in;
|
|
break;
|
|
case NS_STYLE_CURSOR_ZOOM_OUT:
|
|
c = eCursor_zoom_out;
|
|
break;
|
|
case NS_STYLE_CURSOR_NOT_ALLOWED:
|
|
c = eCursor_not_allowed;
|
|
break;
|
|
case NS_STYLE_CURSOR_COL_RESIZE:
|
|
c = eCursor_col_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_ROW_RESIZE:
|
|
c = eCursor_row_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_NO_DROP:
|
|
c = eCursor_no_drop;
|
|
break;
|
|
case NS_STYLE_CURSOR_VERTICAL_TEXT:
|
|
c = eCursor_vertical_text;
|
|
break;
|
|
case NS_STYLE_CURSOR_ALL_SCROLL:
|
|
c = eCursor_all_scroll;
|
|
break;
|
|
case NS_STYLE_CURSOR_NESW_RESIZE:
|
|
c = eCursor_nesw_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_NWSE_RESIZE:
|
|
c = eCursor_nwse_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_NS_RESIZE:
|
|
c = eCursor_ns_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_EW_RESIZE:
|
|
c = eCursor_ew_resize;
|
|
break;
|
|
case NS_STYLE_CURSOR_NONE:
|
|
c = eCursor_none;
|
|
break;
|
|
}
|
|
|
|
// First, try the imgIContainer, if non-null
|
|
nsresult rv = NS_ERROR_FAILURE;
|
|
if (aContainer) {
|
|
uint32_t hotspotX, hotspotY;
|
|
|
|
// css3-ui says to use the CSS-specified hotspot if present,
|
|
// otherwise use the intrinsic hotspot, otherwise use the top left
|
|
// corner.
|
|
if (aHaveHotspot) {
|
|
int32_t imgWidth, imgHeight;
|
|
aContainer->GetWidth(&imgWidth);
|
|
aContainer->GetHeight(&imgHeight);
|
|
|
|
// XXX std::max(NS_lround(x), 0)?
|
|
hotspotX = aHotspotX > 0.0f
|
|
? uint32_t(aHotspotX + 0.5f) : uint32_t(0);
|
|
if (hotspotX >= uint32_t(imgWidth))
|
|
hotspotX = imgWidth - 1;
|
|
hotspotY = aHotspotY > 0.0f
|
|
? uint32_t(aHotspotY + 0.5f) : uint32_t(0);
|
|
if (hotspotY >= uint32_t(imgHeight))
|
|
hotspotY = imgHeight - 1;
|
|
} else {
|
|
hotspotX = 0;
|
|
hotspotY = 0;
|
|
nsCOMPtr<nsIProperties> props(do_QueryInterface(aContainer));
|
|
if (props) {
|
|
nsCOMPtr<nsISupportsPRUint32> hotspotXWrap, hotspotYWrap;
|
|
|
|
props->Get("hotspotX", NS_GET_IID(nsISupportsPRUint32), getter_AddRefs(hotspotXWrap));
|
|
props->Get("hotspotY", NS_GET_IID(nsISupportsPRUint32), getter_AddRefs(hotspotYWrap));
|
|
|
|
if (hotspotXWrap)
|
|
hotspotXWrap->GetData(&hotspotX);
|
|
if (hotspotYWrap)
|
|
hotspotYWrap->GetData(&hotspotY);
|
|
}
|
|
}
|
|
|
|
rv = aWidget->SetCursor(aContainer, hotspotX, hotspotY);
|
|
}
|
|
|
|
if (NS_FAILED(rv))
|
|
aWidget->SetCursor(c);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
class MOZ_STACK_CLASS nsESMEventCB : public nsDispatchingCallback
|
|
{
|
|
public:
|
|
nsESMEventCB(nsIContent* aTarget) : mTarget(aTarget) {}
|
|
|
|
virtual void HandleEvent(nsEventChainPostVisitor& aVisitor)
|
|
{
|
|
if (aVisitor.mPresContext) {
|
|
nsIFrame* frame = aVisitor.mPresContext->GetPrimaryFrameFor(mTarget);
|
|
if (frame) {
|
|
frame->HandleEvent(aVisitor.mPresContext,
|
|
aVisitor.mEvent->AsGUIEvent(),
|
|
&aVisitor.mEventStatus);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> mTarget;
|
|
};
|
|
|
|
/*static*/ bool
|
|
nsEventStateManager::IsHandlingUserInput()
|
|
{
|
|
if (sUserInputEventDepth <= 0) {
|
|
return false;
|
|
}
|
|
|
|
TimeDuration timeout = nsContentUtils::HandlingUserInputTimeout();
|
|
return timeout <= TimeDuration(0) ||
|
|
(TimeStamp::Now() - sHandlingInputStart) <= timeout;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsEventStateManager::DispatchMouseOrPointerEvent(WidgetMouseEvent* aMouseEvent,
|
|
uint32_t aMessage,
|
|
nsIContent* aTargetContent,
|
|
nsIContent* aRelatedContent)
|
|
{
|
|
// http://dvcs.w3.org/hg/webevents/raw-file/default/mouse-lock.html#methods
|
|
// "[When the mouse is locked on an element...e]vents that require the concept
|
|
// of a mouse cursor must not be dispatched (for example: mouseover, mouseout).
|
|
if (sIsPointerLocked &&
|
|
(aMessage == NS_MOUSELEAVE ||
|
|
aMessage == NS_MOUSEENTER ||
|
|
aMessage == NS_MOUSE_ENTER_SYNTH ||
|
|
aMessage == NS_MOUSE_EXIT_SYNTH)) {
|
|
mCurrentTargetContent = nullptr;
|
|
nsCOMPtr<Element> pointerLockedElement =
|
|
do_QueryReferent(nsEventStateManager::sPointerLockedElement);
|
|
if (!pointerLockedElement) {
|
|
NS_WARNING("Should have pointer locked element, but didn't.");
|
|
return nullptr;
|
|
}
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(pointerLockedElement);
|
|
return mPresContext->GetPrimaryFrameFor(content);
|
|
}
|
|
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
nsAutoPtr<WidgetPointerEvent> newPointerEvent;
|
|
nsAutoPtr<WidgetMouseEvent> newMouseEvent;
|
|
WidgetMouseEvent* event = nullptr;
|
|
WidgetPointerEvent* sourcePointer = aMouseEvent->AsPointerEvent();
|
|
if (sourcePointer) {
|
|
PROFILER_LABEL("Input", "DispatchPointerEvent");
|
|
newPointerEvent =
|
|
new WidgetPointerEvent(aMouseEvent->mFlags.mIsTrusted, aMessage,
|
|
aMouseEvent->widget);
|
|
newPointerEvent->isPrimary = sourcePointer->isPrimary;
|
|
newPointerEvent->pointerId = sourcePointer->pointerId;
|
|
newPointerEvent->width = sourcePointer->width;
|
|
newPointerEvent->height = sourcePointer->height;
|
|
newPointerEvent->inputSource = sourcePointer->inputSource;
|
|
event = newPointerEvent.get();
|
|
} else {
|
|
PROFILER_LABEL("Input", "DispatchMouseEvent");
|
|
newMouseEvent =
|
|
new WidgetMouseEvent(aMouseEvent->mFlags.mIsTrusted, aMessage,
|
|
aMouseEvent->widget, WidgetMouseEvent::eReal);
|
|
event = newMouseEvent.get();
|
|
}
|
|
event->refPoint = aMouseEvent->refPoint;
|
|
event->modifiers = aMouseEvent->modifiers;
|
|
event->button = aMouseEvent->button;
|
|
event->buttons = aMouseEvent->buttons;
|
|
event->pluginEvent = aMouseEvent->pluginEvent;
|
|
event->relatedTarget = aRelatedContent;
|
|
event->inputSource = aMouseEvent->inputSource;
|
|
|
|
nsWeakFrame previousTarget = mCurrentTarget;
|
|
|
|
mCurrentTargetContent = aTargetContent;
|
|
|
|
nsIFrame* targetFrame = nullptr;
|
|
if (aTargetContent) {
|
|
nsESMEventCB callback(aTargetContent);
|
|
nsEventDispatcher::Dispatch(aTargetContent, mPresContext, event, nullptr,
|
|
&status, &callback);
|
|
|
|
// Although the primary frame was checked in event callback,
|
|
// it may not be the same object after event dispatching and handling.
|
|
// So we need to refetch it.
|
|
if (mPresContext) {
|
|
targetFrame = mPresContext->GetPrimaryFrameFor(aTargetContent);
|
|
}
|
|
}
|
|
|
|
mCurrentTargetContent = nullptr;
|
|
mCurrentTarget = previousTarget;
|
|
|
|
return targetFrame;
|
|
}
|
|
|
|
class EnterLeaveDispatcher
|
|
{
|
|
public:
|
|
EnterLeaveDispatcher(nsEventStateManager* aESM,
|
|
nsIContent* aTarget, nsIContent* aRelatedTarget,
|
|
WidgetMouseEvent* aMouseEvent, uint32_t aType)
|
|
: mESM(aESM), mMouseEvent(aMouseEvent), mType(aType)
|
|
{
|
|
nsPIDOMWindow* win =
|
|
aTarget ? aTarget->OwnerDoc()->GetInnerWindow() : nullptr;
|
|
if (aMouseEvent->AsPointerEvent() ? win && win->HasPointerEnterLeaveEventListeners() :
|
|
win && win->HasMouseEnterLeaveEventListeners()) {
|
|
mRelatedTarget = aRelatedTarget ?
|
|
aRelatedTarget->FindFirstNonChromeOnlyAccessContent() : nullptr;
|
|
nsINode* commonParent = nullptr;
|
|
if (aTarget && aRelatedTarget) {
|
|
commonParent =
|
|
nsContentUtils::GetCommonAncestor(aTarget, aRelatedTarget);
|
|
}
|
|
nsIContent* current = aTarget;
|
|
// Note, it is ok if commonParent is null!
|
|
while (current && current != commonParent) {
|
|
if (!current->ChromeOnlyAccess()) {
|
|
mTargets.AppendObject(current);
|
|
}
|
|
// mouseenter/leave is fired only on elements.
|
|
current = current->GetParent();
|
|
}
|
|
}
|
|
}
|
|
|
|
~EnterLeaveDispatcher()
|
|
{
|
|
if (mType == NS_MOUSEENTER ||
|
|
mType == NS_POINTER_ENTER) {
|
|
for (int32_t i = mTargets.Count() - 1; i >= 0; --i) {
|
|
mESM->DispatchMouseOrPointerEvent(mMouseEvent, mType, mTargets[i],
|
|
mRelatedTarget);
|
|
}
|
|
} else {
|
|
for (int32_t i = 0; i < mTargets.Count(); ++i) {
|
|
mESM->DispatchMouseOrPointerEvent(mMouseEvent, mType, mTargets[i],
|
|
mRelatedTarget);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsEventStateManager* mESM;
|
|
nsCOMArray<nsIContent> mTargets;
|
|
nsCOMPtr<nsIContent> mRelatedTarget;
|
|
WidgetMouseEvent* mMouseEvent;
|
|
uint32_t mType;
|
|
};
|
|
|
|
void
|
|
nsEventStateManager::NotifyMouseOut(WidgetMouseEvent* aMouseEvent,
|
|
nsIContent* aMovingInto)
|
|
{
|
|
OverOutElementsWrapper* wrapper = GetWrapperByEventID(aMouseEvent);
|
|
|
|
if (!wrapper->mLastOverElement)
|
|
return;
|
|
// Before firing mouseout, check for recursion
|
|
if (wrapper->mLastOverElement == wrapper->mFirstOutEventElement)
|
|
return;
|
|
|
|
if (wrapper->mLastOverFrame) {
|
|
// if the frame is associated with a subdocument,
|
|
// tell the subdocument that we're moving out of it
|
|
nsSubDocumentFrame* subdocFrame = do_QueryFrame(wrapper->mLastOverFrame.GetFrame());
|
|
if (subdocFrame) {
|
|
nsCOMPtr<nsIDocShell> docshell;
|
|
subdocFrame->GetDocShell(getter_AddRefs(docshell));
|
|
if (docshell) {
|
|
nsRefPtr<nsPresContext> presContext;
|
|
docshell->GetPresContext(getter_AddRefs(presContext));
|
|
|
|
if (presContext) {
|
|
nsEventStateManager* kidESM = presContext->EventStateManager();
|
|
// Not moving into any element in this subdocument
|
|
kidESM->NotifyMouseOut(aMouseEvent, nullptr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// That could have caused DOM events which could wreak havoc. Reverify
|
|
// things and be careful.
|
|
if (!wrapper->mLastOverElement)
|
|
return;
|
|
|
|
// Store the first mouseOut event we fire and don't refire mouseOut
|
|
// to that element while the first mouseOut is still ongoing.
|
|
wrapper->mFirstOutEventElement = wrapper->mLastOverElement;
|
|
|
|
// Don't touch hover state if aMovingInto is non-null. Caller will update
|
|
// hover state itself, and we have optimizations for hover switching between
|
|
// two nearby elements both deep in the DOM tree that would be defeated by
|
|
// switching the hover state to null here.
|
|
bool isPointer = aMouseEvent->eventStructType == NS_POINTER_EVENT;
|
|
if (!aMovingInto && !isPointer) {
|
|
// Unset :hover
|
|
SetContentState(nullptr, NS_EVENT_STATE_HOVER);
|
|
}
|
|
|
|
EnterLeaveDispatcher leaveDispatcher(this, wrapper->mLastOverElement,
|
|
aMovingInto, aMouseEvent,
|
|
isPointer ? NS_POINTER_LEAVE :
|
|
NS_MOUSELEAVE);
|
|
|
|
// Fire mouseout
|
|
DispatchMouseOrPointerEvent(aMouseEvent, isPointer ? NS_POINTER_OUT : NS_MOUSE_EXIT_SYNTH,
|
|
wrapper->mLastOverElement, aMovingInto);
|
|
|
|
wrapper->mLastOverFrame = nullptr;
|
|
wrapper->mLastOverElement = nullptr;
|
|
|
|
// Turn recursion protection back off
|
|
wrapper->mFirstOutEventElement = nullptr;
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::NotifyMouseOver(WidgetMouseEvent* aMouseEvent,
|
|
nsIContent* aContent)
|
|
{
|
|
NS_ASSERTION(aContent, "Mouse must be over something");
|
|
|
|
OverOutElementsWrapper* wrapper = GetWrapperByEventID(aMouseEvent);
|
|
|
|
if (wrapper->mLastOverElement == aContent)
|
|
return;
|
|
|
|
// Before firing mouseover, check for recursion
|
|
if (aContent == wrapper->mFirstOverEventElement)
|
|
return;
|
|
|
|
// Check to see if we're a subdocument and if so update the parent
|
|
// document's ESM state to indicate that the mouse is over the
|
|
// content associated with our subdocument.
|
|
EnsureDocument(mPresContext);
|
|
nsIDocument *parentDoc = mDocument->GetParentDocument();
|
|
if (parentDoc) {
|
|
nsIContent *docContent = parentDoc->FindContentForSubDocument(mDocument);
|
|
if (docContent) {
|
|
nsIPresShell *parentShell = parentDoc->GetShell();
|
|
if (parentShell) {
|
|
nsEventStateManager* parentESM = parentShell->GetPresContext()->EventStateManager();
|
|
parentESM->NotifyMouseOver(aMouseEvent, docContent);
|
|
}
|
|
}
|
|
}
|
|
// Firing the DOM event in the parent document could cause all kinds
|
|
// of havoc. Reverify and take care.
|
|
if (wrapper->mLastOverElement == aContent)
|
|
return;
|
|
|
|
// Remember mLastOverElement as the related content for the
|
|
// DispatchMouseOrPointerEvent() call below, since NotifyMouseOut() resets it, bug 298477.
|
|
nsCOMPtr<nsIContent> lastOverElement = wrapper->mLastOverElement;
|
|
|
|
bool isPointer = aMouseEvent->eventStructType == NS_POINTER_EVENT;
|
|
EnterLeaveDispatcher enterDispatcher(this, aContent, lastOverElement,
|
|
aMouseEvent,
|
|
isPointer ? NS_POINTER_ENTER :
|
|
NS_MOUSEENTER);
|
|
|
|
NotifyMouseOut(aMouseEvent, aContent);
|
|
|
|
// Store the first mouseOver event we fire and don't refire mouseOver
|
|
// to that element while the first mouseOver is still ongoing.
|
|
wrapper->mFirstOverEventElement = aContent;
|
|
|
|
if (!isPointer) {
|
|
SetContentState(aContent, NS_EVENT_STATE_HOVER);
|
|
}
|
|
|
|
// Fire mouseover
|
|
wrapper->mLastOverFrame =
|
|
DispatchMouseOrPointerEvent(aMouseEvent,
|
|
isPointer ? NS_POINTER_OVER :
|
|
NS_MOUSE_ENTER_SYNTH,
|
|
aContent, lastOverElement);
|
|
wrapper->mLastOverElement = aContent;
|
|
|
|
// Turn recursion protection back off
|
|
wrapper->mFirstOverEventElement = nullptr;
|
|
}
|
|
|
|
// Returns the center point of the window's inner content area.
|
|
// This is in widget coordinates, i.e. relative to the widget's top
|
|
// left corner, not in screen coordinates, the same units that
|
|
// UIEvent::refPoint is in.
|
|
//
|
|
// XXX Hack alert: XXX
|
|
// However, we do the computation in integer CSS pixels, NOT device pix,
|
|
// in order to fudge around the one-pixel error in innerHeight in fullscreen
|
|
// mode (see bug 799523 comment 35, and bug 729011). Using integer CSS pix
|
|
// makes us throw away the fractional error that results, rather than having
|
|
// it manifest as a potential one-device-pix discrepancy.
|
|
static LayoutDeviceIntPoint
|
|
GetWindowInnerRectCenter(nsPIDOMWindow* aWindow,
|
|
nsIWidget* aWidget,
|
|
nsPresContext* aContext)
|
|
{
|
|
NS_ENSURE_TRUE(aWindow && aWidget && aContext, LayoutDeviceIntPoint(0, 0));
|
|
|
|
float cssInnerX = 0.0;
|
|
aWindow->GetMozInnerScreenX(&cssInnerX);
|
|
int32_t innerX = int32_t(NS_round(cssInnerX));
|
|
|
|
float cssInnerY = 0.0;
|
|
aWindow->GetMozInnerScreenY(&cssInnerY);
|
|
int32_t innerY = int32_t(NS_round(cssInnerY));
|
|
|
|
int32_t innerWidth = 0;
|
|
aWindow->GetInnerWidth(&innerWidth);
|
|
|
|
int32_t innerHeight = 0;
|
|
aWindow->GetInnerHeight(&innerHeight);
|
|
|
|
nsIntRect screen;
|
|
aWidget->GetScreenBounds(screen);
|
|
|
|
int32_t cssScreenX = aContext->DevPixelsToIntCSSPixels(screen.x);
|
|
int32_t cssScreenY = aContext->DevPixelsToIntCSSPixels(screen.y);
|
|
|
|
return LayoutDeviceIntPoint(
|
|
aContext->CSSPixelsToDevPixels(innerX - cssScreenX + innerWidth / 2),
|
|
aContext->CSSPixelsToDevPixels(innerY - cssScreenY + innerHeight / 2));
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::GenerateMouseEnterExit(WidgetMouseEvent* aMouseEvent)
|
|
{
|
|
EnsureDocument(mPresContext);
|
|
if (!mDocument)
|
|
return;
|
|
|
|
// Hold onto old target content through the event and reset after.
|
|
nsCOMPtr<nsIContent> targetBeforeEvent = mCurrentTargetContent;
|
|
|
|
switch(aMouseEvent->message) {
|
|
case NS_MOUSE_MOVE:
|
|
{
|
|
// Mouse movement is reported on the MouseEvent.movement{X,Y} fields.
|
|
// Movement is calculated in UIEvent::GetMovementPoint() as:
|
|
// previous_mousemove_refPoint - current_mousemove_refPoint.
|
|
if (sIsPointerLocked && aMouseEvent->widget) {
|
|
// The pointer is locked. If the pointer is not located at the center of
|
|
// the window, dispatch a synthetic mousemove to return the pointer there.
|
|
// Doing this between "real" pointer moves gives the impression that the
|
|
// (locked) pointer can continue moving and won't stop at the screen
|
|
// boundary. We cancel the synthetic event so that we don't end up
|
|
// dispatching the centering move event to content.
|
|
LayoutDeviceIntPoint center =
|
|
GetWindowInnerRectCenter(mDocument->GetWindow(), aMouseEvent->widget,
|
|
mPresContext);
|
|
aMouseEvent->lastRefPoint = center;
|
|
if (aMouseEvent->refPoint != center) {
|
|
// Mouse move doesn't finish at the center of the window. Dispatch a
|
|
// synthetic native mouse event to move the pointer back to the center
|
|
// of the window, to faciliate more movement. But first, record that
|
|
// we've dispatched a synthetic mouse movement, so we can cancel it
|
|
// in the other branch here.
|
|
sSynthCenteringPoint = center;
|
|
aMouseEvent->widget->SynthesizeNativeMouseMove(
|
|
LayoutDeviceIntPoint::ToUntyped(center) +
|
|
aMouseEvent->widget->WidgetToScreenOffset());
|
|
} else if (aMouseEvent->refPoint == sSynthCenteringPoint) {
|
|
// This is the "synthetic native" event we dispatched to re-center the
|
|
// pointer. Cancel it so we don't expose the centering move to content.
|
|
aMouseEvent->mFlags.mPropagationStopped = true;
|
|
// Clear sSynthCenteringPoint so we don't cancel other events
|
|
// targeted at the center.
|
|
sSynthCenteringPoint = kInvalidRefPoint;
|
|
}
|
|
} else if (sLastRefPoint == kInvalidRefPoint) {
|
|
// We don't have a valid previous mousemove refPoint. This is either
|
|
// the first move we've encountered, or the mouse has just re-entered
|
|
// the application window. We should report (0,0) movement for this
|
|
// case, so make the current and previous refPoints the same.
|
|
aMouseEvent->lastRefPoint = aMouseEvent->refPoint;
|
|
} else {
|
|
aMouseEvent->lastRefPoint = sLastRefPoint;
|
|
}
|
|
|
|
// Update the last known refPoint with the current refPoint.
|
|
sLastRefPoint = aMouseEvent->refPoint;
|
|
|
|
}
|
|
case NS_POINTER_MOVE:
|
|
case NS_POINTER_DOWN:
|
|
{
|
|
// Get the target content target (mousemove target == mouseover target)
|
|
nsCOMPtr<nsIContent> targetElement = GetEventTargetContent(aMouseEvent);
|
|
if (!targetElement) {
|
|
// We're always over the document root, even if we're only
|
|
// over dead space in a page (whose frame is not associated with
|
|
// any content) or in print preview dead space
|
|
targetElement = mDocument->GetRootElement();
|
|
}
|
|
if (targetElement) {
|
|
NotifyMouseOver(aMouseEvent, targetElement);
|
|
}
|
|
}
|
|
break;
|
|
case NS_POINTER_LEAVE:
|
|
case NS_POINTER_CANCEL:
|
|
case NS_MOUSE_EXIT:
|
|
{
|
|
// This is actually the window mouse exit or pointer leave event. We're not moving
|
|
// into any new element.
|
|
|
|
OverOutElementsWrapper* helper = GetWrapperByEventID(aMouseEvent);
|
|
if (helper->mLastOverFrame &&
|
|
nsContentUtils::GetTopLevelWidget(aMouseEvent->widget) !=
|
|
nsContentUtils::GetTopLevelWidget(helper->mLastOverFrame->GetNearestWidget())) {
|
|
// the Mouse/PointerOut event widget doesn't have same top widget with
|
|
// mLastOverFrame, it's a spurious event for mLastOverFrame
|
|
break;
|
|
}
|
|
|
|
// Reset sLastRefPoint, so that we'll know not to report any
|
|
// movement the next time we re-enter the window.
|
|
sLastRefPoint = kInvalidRefPoint;
|
|
|
|
NotifyMouseOut(aMouseEvent, nullptr);
|
|
}
|
|
break;
|
|
}
|
|
|
|
// reset mCurretTargetContent to what it was
|
|
mCurrentTargetContent = targetBeforeEvent;
|
|
}
|
|
|
|
OverOutElementsWrapper*
|
|
nsEventStateManager::GetWrapperByEventID(WidgetMouseEvent* aEvent)
|
|
{
|
|
WidgetPointerEvent* pointer = aEvent->AsPointerEvent();
|
|
if (!pointer) {
|
|
MOZ_ASSERT(aEvent->AsMouseEvent() != nullptr);
|
|
if (!mMouseEnterLeaveHelper) {
|
|
mMouseEnterLeaveHelper = new OverOutElementsWrapper();
|
|
}
|
|
return mMouseEnterLeaveHelper;
|
|
}
|
|
nsRefPtr<OverOutElementsWrapper> helper;
|
|
if (!mPointersEnterLeaveHelper.Get(pointer->pointerId, getter_AddRefs(helper))) {
|
|
helper = new OverOutElementsWrapper();
|
|
mPointersEnterLeaveHelper.Put(pointer->pointerId, helper);
|
|
}
|
|
|
|
return helper;
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::SetPointerLock(nsIWidget* aWidget,
|
|
nsIContent* aElement)
|
|
{
|
|
// NOTE: aElement will be nullptr when unlocking.
|
|
sIsPointerLocked = !!aElement;
|
|
|
|
if (!aWidget) {
|
|
return;
|
|
}
|
|
|
|
// Reset mouse wheel transaction
|
|
nsMouseWheelTransaction::EndTransaction();
|
|
|
|
// Deal with DnD events
|
|
nsCOMPtr<nsIDragService> dragService =
|
|
do_GetService("@mozilla.org/widget/dragservice;1");
|
|
|
|
if (sIsPointerLocked) {
|
|
// Store the last known ref point so we can reposition the pointer after unlock.
|
|
mPreLockPoint = sLastRefPoint;
|
|
|
|
// Fire a synthetic mouse move to ensure event state is updated. We first
|
|
// set the mouse to the center of the window, so that the mouse event
|
|
// doesn't report any movement.
|
|
sLastRefPoint = GetWindowInnerRectCenter(aElement->OwnerDoc()->GetWindow(),
|
|
aWidget,
|
|
mPresContext);
|
|
aWidget->SynthesizeNativeMouseMove(
|
|
LayoutDeviceIntPoint::ToUntyped(sLastRefPoint) + aWidget->WidgetToScreenOffset());
|
|
|
|
// Retarget all events to this element via capture.
|
|
nsIPresShell::SetCapturingContent(aElement, CAPTURE_POINTERLOCK);
|
|
|
|
// Suppress DnD
|
|
if (dragService) {
|
|
dragService->Suppress();
|
|
}
|
|
} else {
|
|
// Unlocking, so return pointer to the original position by firing a
|
|
// synthetic mouse event. We first reset sLastRefPoint to its
|
|
// pre-pointerlock position, so that the synthetic mouse event reports
|
|
// no movement.
|
|
sLastRefPoint = mPreLockPoint;
|
|
aWidget->SynthesizeNativeMouseMove(
|
|
LayoutDeviceIntPoint::ToUntyped(mPreLockPoint) + aWidget->WidgetToScreenOffset());
|
|
|
|
// Don't retarget events to this element any more.
|
|
nsIPresShell::SetCapturingContent(nullptr, CAPTURE_POINTERLOCK);
|
|
|
|
// Unsuppress DnD
|
|
if (dragService) {
|
|
dragService->Unsuppress();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::GenerateDragDropEnterExit(nsPresContext* aPresContext,
|
|
WidgetDragEvent* aDragEvent)
|
|
{
|
|
//Hold onto old target content through the event and reset after.
|
|
nsCOMPtr<nsIContent> targetBeforeEvent = mCurrentTargetContent;
|
|
|
|
switch(aDragEvent->message) {
|
|
case NS_DRAGDROP_OVER:
|
|
{
|
|
// when dragging from one frame to another, events are fired in the
|
|
// order: dragexit, dragenter, dragleave
|
|
if (sLastDragOverFrame != mCurrentTarget) {
|
|
//We'll need the content, too, to check if it changed separately from the frames.
|
|
nsCOMPtr<nsIContent> lastContent;
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
mCurrentTarget->GetContentForEvent(aDragEvent,
|
|
getter_AddRefs(targetContent));
|
|
|
|
if (sLastDragOverFrame) {
|
|
//The frame has changed but the content may not have. Check before dispatching to content
|
|
sLastDragOverFrame->GetContentForEvent(aDragEvent,
|
|
getter_AddRefs(lastContent));
|
|
|
|
FireDragEnterOrExit(sLastDragOverFrame->PresContext(),
|
|
aDragEvent, NS_DRAGDROP_EXIT_SYNTH,
|
|
targetContent, lastContent, sLastDragOverFrame);
|
|
}
|
|
|
|
FireDragEnterOrExit(aPresContext, aDragEvent, NS_DRAGDROP_ENTER,
|
|
lastContent, targetContent, mCurrentTarget);
|
|
|
|
if (sLastDragOverFrame) {
|
|
FireDragEnterOrExit(sLastDragOverFrame->PresContext(),
|
|
aDragEvent, NS_DRAGDROP_LEAVE_SYNTH,
|
|
targetContent, lastContent, sLastDragOverFrame);
|
|
}
|
|
|
|
sLastDragOverFrame = mCurrentTarget;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case NS_DRAGDROP_EXIT:
|
|
{
|
|
//This is actually the window mouse exit event.
|
|
if (sLastDragOverFrame) {
|
|
nsCOMPtr<nsIContent> lastContent;
|
|
sLastDragOverFrame->GetContentForEvent(aDragEvent,
|
|
getter_AddRefs(lastContent));
|
|
|
|
nsRefPtr<nsPresContext> lastDragOverFramePresContext = sLastDragOverFrame->PresContext();
|
|
FireDragEnterOrExit(lastDragOverFramePresContext,
|
|
aDragEvent, NS_DRAGDROP_EXIT_SYNTH,
|
|
nullptr, lastContent, sLastDragOverFrame);
|
|
FireDragEnterOrExit(lastDragOverFramePresContext,
|
|
aDragEvent, NS_DRAGDROP_LEAVE_SYNTH,
|
|
nullptr, lastContent, sLastDragOverFrame);
|
|
|
|
sLastDragOverFrame = nullptr;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
//reset mCurretTargetContent to what it was
|
|
mCurrentTargetContent = targetBeforeEvent;
|
|
|
|
// Now flush all pending notifications, for better responsiveness.
|
|
FlushPendingEvents(aPresContext);
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::FireDragEnterOrExit(nsPresContext* aPresContext,
|
|
WidgetDragEvent* aDragEvent,
|
|
uint32_t aMsg,
|
|
nsIContent* aRelatedTarget,
|
|
nsIContent* aTargetContent,
|
|
nsWeakFrame& aTargetFrame)
|
|
{
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
WidgetDragEvent event(aDragEvent->mFlags.mIsTrusted, aMsg,
|
|
aDragEvent->widget);
|
|
event.refPoint = aDragEvent->refPoint;
|
|
event.modifiers = aDragEvent->modifiers;
|
|
event.buttons = aDragEvent->buttons;
|
|
event.relatedTarget = aRelatedTarget;
|
|
event.inputSource = aDragEvent->inputSource;
|
|
|
|
mCurrentTargetContent = aTargetContent;
|
|
|
|
if (aTargetContent != aRelatedTarget) {
|
|
//XXX This event should still go somewhere!!
|
|
if (aTargetContent)
|
|
nsEventDispatcher::Dispatch(aTargetContent, aPresContext, &event,
|
|
nullptr, &status);
|
|
|
|
// adjust the drag hover if the dragenter event was cancelled or this is a drag exit
|
|
if (status == nsEventStatus_eConsumeNoDefault || aMsg == NS_DRAGDROP_EXIT)
|
|
SetContentState((aMsg == NS_DRAGDROP_ENTER) ? aTargetContent : nullptr,
|
|
NS_EVENT_STATE_DRAGOVER);
|
|
|
|
// collect any changes to moz cursor settings stored in the event's
|
|
// data transfer.
|
|
if (aMsg == NS_DRAGDROP_LEAVE_SYNTH || aMsg == NS_DRAGDROP_EXIT_SYNTH ||
|
|
aMsg == NS_DRAGDROP_ENTER)
|
|
UpdateDragDataTransfer(&event);
|
|
}
|
|
|
|
// Finally dispatch the event to the frame
|
|
if (aTargetFrame)
|
|
aTargetFrame->HandleEvent(aPresContext, &event, &status);
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::UpdateDragDataTransfer(WidgetDragEvent* dragEvent)
|
|
{
|
|
NS_ASSERTION(dragEvent, "drag event is null in UpdateDragDataTransfer!");
|
|
if (!dragEvent->dataTransfer)
|
|
return;
|
|
|
|
nsCOMPtr<nsIDragSession> dragSession = nsContentUtils::GetDragSession();
|
|
|
|
if (dragSession) {
|
|
// the initial dataTransfer is the one from the dragstart event that
|
|
// was set on the dragSession when the drag began.
|
|
nsCOMPtr<nsIDOMDataTransfer> initialDataTransfer;
|
|
dragSession->GetDataTransfer(getter_AddRefs(initialDataTransfer));
|
|
if (initialDataTransfer) {
|
|
// retrieve the current moz cursor setting and save it.
|
|
nsAutoString mozCursor;
|
|
dragEvent->dataTransfer->GetMozCursor(mozCursor);
|
|
initialDataTransfer->SetMozCursor(mozCursor);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsEventStateManager::SetClickCount(nsPresContext* aPresContext,
|
|
WidgetMouseEvent* aEvent,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
nsCOMPtr<nsIContent> mouseContent;
|
|
nsIContent* mouseContentParent = nullptr;
|
|
mCurrentTarget->GetContentForEvent(aEvent, getter_AddRefs(mouseContent));
|
|
if (mouseContent) {
|
|
if (mouseContent->IsNodeOfType(nsINode::eTEXT)) {
|
|
mouseContent = mouseContent->GetParent();
|
|
}
|
|
if (mouseContent && mouseContent->IsRootOfNativeAnonymousSubtree()) {
|
|
mouseContentParent = mouseContent->GetParent();
|
|
}
|
|
}
|
|
|
|
switch (aEvent->button) {
|
|
case WidgetMouseEvent::eLeftButton:
|
|
if (aEvent->message == NS_MOUSE_BUTTON_DOWN) {
|
|
mLastLeftMouseDownContent = mouseContent;
|
|
mLastLeftMouseDownContentParent = mouseContentParent;
|
|
} else if (aEvent->message == NS_MOUSE_BUTTON_UP) {
|
|
if (mLastLeftMouseDownContent == mouseContent ||
|
|
mLastLeftMouseDownContentParent == mouseContent ||
|
|
mLastLeftMouseDownContent == mouseContentParent) {
|
|
aEvent->clickCount = mLClickCount;
|
|
mLClickCount = 0;
|
|
} else {
|
|
aEvent->clickCount = 0;
|
|
}
|
|
mLastLeftMouseDownContent = nullptr;
|
|
mLastLeftMouseDownContentParent = nullptr;
|
|
}
|
|
break;
|
|
|
|
case WidgetMouseEvent::eMiddleButton:
|
|
if (aEvent->message == NS_MOUSE_BUTTON_DOWN) {
|
|
mLastMiddleMouseDownContent = mouseContent;
|
|
mLastMiddleMouseDownContentParent = mouseContentParent;
|
|
} else if (aEvent->message == NS_MOUSE_BUTTON_UP) {
|
|
if (mLastMiddleMouseDownContent == mouseContent ||
|
|
mLastMiddleMouseDownContentParent == mouseContent ||
|
|
mLastMiddleMouseDownContent == mouseContentParent) {
|
|
aEvent->clickCount = mMClickCount;
|
|
mMClickCount = 0;
|
|
} else {
|
|
aEvent->clickCount = 0;
|
|
}
|
|
mLastMiddleMouseDownContent = nullptr;
|
|
mLastMiddleMouseDownContentParent = nullptr;
|
|
}
|
|
break;
|
|
|
|
case WidgetMouseEvent::eRightButton:
|
|
if (aEvent->message == NS_MOUSE_BUTTON_DOWN) {
|
|
mLastRightMouseDownContent = mouseContent;
|
|
mLastRightMouseDownContentParent = mouseContentParent;
|
|
} else if (aEvent->message == NS_MOUSE_BUTTON_UP) {
|
|
if (mLastRightMouseDownContent == mouseContent ||
|
|
mLastRightMouseDownContentParent == mouseContent ||
|
|
mLastRightMouseDownContent == mouseContentParent) {
|
|
aEvent->clickCount = mRClickCount;
|
|
mRClickCount = 0;
|
|
} else {
|
|
aEvent->clickCount = 0;
|
|
}
|
|
mLastRightMouseDownContent = nullptr;
|
|
mLastRightMouseDownContentParent = nullptr;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEventStateManager::CheckForAndDispatchClick(nsPresContext* aPresContext,
|
|
WidgetMouseEvent* aEvent,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
nsresult ret = NS_OK;
|
|
|
|
//If mouse is still over same element, clickcount will be > 1.
|
|
//If it has moved it will be zero, so no click.
|
|
if (0 != aEvent->clickCount) {
|
|
//Check that the window isn't disabled before firing a click
|
|
//(see bug 366544).
|
|
if (aEvent->widget && !aEvent->widget->IsEnabled()) {
|
|
return ret;
|
|
}
|
|
//fire click
|
|
bool notDispatchToContents =
|
|
(aEvent->button == WidgetMouseEvent::eMiddleButton ||
|
|
aEvent->button == WidgetMouseEvent::eRightButton);
|
|
|
|
WidgetMouseEvent event(aEvent->mFlags.mIsTrusted, NS_MOUSE_CLICK,
|
|
aEvent->widget, WidgetMouseEvent::eReal);
|
|
event.refPoint = aEvent->refPoint;
|
|
event.clickCount = aEvent->clickCount;
|
|
event.modifiers = aEvent->modifiers;
|
|
event.buttons = aEvent->buttons;
|
|
event.time = aEvent->time;
|
|
event.mFlags.mNoContentDispatch = notDispatchToContents;
|
|
event.button = aEvent->button;
|
|
event.inputSource = aEvent->inputSource;
|
|
|
|
nsCOMPtr<nsIPresShell> presShell = mPresContext->GetPresShell();
|
|
if (presShell) {
|
|
nsCOMPtr<nsIContent> mouseContent = GetEventTargetContent(aEvent);
|
|
if (!mouseContent && !mCurrentTarget) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// HandleEvent clears out mCurrentTarget which we might need again
|
|
nsWeakFrame currentTarget = mCurrentTarget;
|
|
ret = presShell->HandleEventWithTarget(&event, currentTarget,
|
|
mouseContent, aStatus);
|
|
if (NS_SUCCEEDED(ret) && aEvent->clickCount == 2) {
|
|
//fire double click
|
|
WidgetMouseEvent event2(aEvent->mFlags.mIsTrusted, NS_MOUSE_DOUBLECLICK,
|
|
aEvent->widget, WidgetMouseEvent::eReal);
|
|
event2.refPoint = aEvent->refPoint;
|
|
event2.clickCount = aEvent->clickCount;
|
|
event2.modifiers = aEvent->modifiers;
|
|
event2.buttons = aEvent->buttons;
|
|
event2.mFlags.mNoContentDispatch = notDispatchToContents;
|
|
event2.button = aEvent->button;
|
|
event2.inputSource = aEvent->inputSource;
|
|
|
|
ret = presShell->HandleEventWithTarget(&event2, currentTarget,
|
|
mouseContent, aStatus);
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsEventStateManager::GetEventTarget()
|
|
{
|
|
nsIPresShell *shell;
|
|
if (mCurrentTarget ||
|
|
!mPresContext ||
|
|
!(shell = mPresContext->GetPresShell())) {
|
|
return mCurrentTarget;
|
|
}
|
|
|
|
if (mCurrentTargetContent) {
|
|
mCurrentTarget = mPresContext->GetPrimaryFrameFor(mCurrentTargetContent);
|
|
if (mCurrentTarget) {
|
|
return mCurrentTarget;
|
|
}
|
|
}
|
|
|
|
nsIFrame* frame = shell->GetEventTargetFrame();
|
|
return (mCurrentTarget = frame);
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
nsEventStateManager::GetEventTargetContent(WidgetEvent* aEvent)
|
|
{
|
|
if (aEvent &&
|
|
(aEvent->message == NS_FOCUS_CONTENT ||
|
|
aEvent->message == NS_BLUR_CONTENT)) {
|
|
nsCOMPtr<nsIContent> content = GetFocusedContent();
|
|
return content.forget();
|
|
}
|
|
|
|
if (mCurrentTargetContent) {
|
|
nsCOMPtr<nsIContent> content = mCurrentTargetContent;
|
|
return content.forget();
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content;
|
|
|
|
nsIPresShell *presShell = mPresContext->GetPresShell();
|
|
if (presShell) {
|
|
content = presShell->GetEventTargetContent(aEvent);
|
|
}
|
|
|
|
// Some events here may set mCurrentTarget but not set the corresponding
|
|
// event target in the PresShell.
|
|
if (!content && mCurrentTarget) {
|
|
mCurrentTarget->GetContentForEvent(aEvent, getter_AddRefs(content));
|
|
}
|
|
|
|
return content.forget();
|
|
}
|
|
|
|
static Element*
|
|
GetLabelTarget(nsIContent* aPossibleLabel)
|
|
{
|
|
mozilla::dom::HTMLLabelElement* label =
|
|
mozilla::dom::HTMLLabelElement::FromContent(aPossibleLabel);
|
|
if (!label)
|
|
return nullptr;
|
|
|
|
return label->GetLabeledElement();
|
|
}
|
|
|
|
static nsIContent* FindCommonAncestor(nsIContent *aNode1, nsIContent *aNode2)
|
|
{
|
|
// Find closest common ancestor
|
|
if (aNode1 && aNode2) {
|
|
// Find the nearest common ancestor by counting the distance to the
|
|
// root and then walking up again, in pairs.
|
|
int32_t offset = 0;
|
|
nsIContent *anc1 = aNode1;
|
|
for (;;) {
|
|
++offset;
|
|
nsIContent* parent = anc1->GetParent();
|
|
if (!parent)
|
|
break;
|
|
anc1 = parent;
|
|
}
|
|
nsIContent *anc2 = aNode2;
|
|
for (;;) {
|
|
--offset;
|
|
nsIContent* parent = anc2->GetParent();
|
|
if (!parent)
|
|
break;
|
|
anc2 = parent;
|
|
}
|
|
if (anc1 == anc2) {
|
|
anc1 = aNode1;
|
|
anc2 = aNode2;
|
|
while (offset > 0) {
|
|
anc1 = anc1->GetParent();
|
|
--offset;
|
|
}
|
|
while (offset < 0) {
|
|
anc2 = anc2->GetParent();
|
|
++offset;
|
|
}
|
|
while (anc1 != anc2) {
|
|
anc1 = anc1->GetParent();
|
|
anc2 = anc2->GetParent();
|
|
}
|
|
return anc1;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
static Element*
|
|
GetParentElement(Element* aElement)
|
|
{
|
|
nsIContent* p = aElement->GetParent();
|
|
return (p && p->IsElement()) ? p->AsElement() : nullptr;
|
|
}
|
|
|
|
/* static */
|
|
void
|
|
nsEventStateManager::SetFullScreenState(Element* aElement, bool aIsFullScreen)
|
|
{
|
|
DoStateChange(aElement, NS_EVENT_STATE_FULL_SCREEN, aIsFullScreen);
|
|
Element* ancestor = aElement;
|
|
while ((ancestor = GetParentElement(ancestor))) {
|
|
DoStateChange(ancestor, NS_EVENT_STATE_FULL_SCREEN_ANCESTOR, aIsFullScreen);
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
inline void
|
|
nsEventStateManager::DoStateChange(Element* aElement, nsEventStates aState,
|
|
bool aAddState)
|
|
{
|
|
if (aAddState) {
|
|
aElement->AddStates(aState);
|
|
} else {
|
|
aElement->RemoveStates(aState);
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
inline void
|
|
nsEventStateManager::DoStateChange(nsIContent* aContent, nsEventStates aState,
|
|
bool aStateAdded)
|
|
{
|
|
if (aContent->IsElement()) {
|
|
DoStateChange(aContent->AsElement(), aState, aStateAdded);
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
void
|
|
nsEventStateManager::UpdateAncestorState(nsIContent* aStartNode,
|
|
nsIContent* aStopBefore,
|
|
nsEventStates aState,
|
|
bool aAddState)
|
|
{
|
|
for (; aStartNode && aStartNode != aStopBefore;
|
|
aStartNode = aStartNode->GetParent()) {
|
|
// We might be starting with a non-element (e.g. a text node) and
|
|
// if someone is doing something weird might be ending with a
|
|
// non-element too (e.g. a document fragment)
|
|
if (!aStartNode->IsElement()) {
|
|
continue;
|
|
}
|
|
Element* element = aStartNode->AsElement();
|
|
DoStateChange(element, aState, aAddState);
|
|
Element* labelTarget = GetLabelTarget(element);
|
|
if (labelTarget) {
|
|
DoStateChange(labelTarget, aState, aAddState);
|
|
}
|
|
}
|
|
|
|
if (aAddState) {
|
|
// We might be in a situation where a node was in hover both
|
|
// because it was hovered and because the label for it was
|
|
// hovered, and while we stopped hovering the node the label is
|
|
// still hovered. Or we might have had two nested labels for the
|
|
// same node, and while one is no longer hovered the other still
|
|
// is. In that situation, the label that's still hovered will be
|
|
// aStopBefore or some ancestor of it, and the call we just made
|
|
// to UpdateAncestorState with aAddState = false would have
|
|
// removed the hover state from the node. But the node should
|
|
// still be in hover state. To handle this situation we need to
|
|
// keep walking up the tree and any time we find a label mark its
|
|
// corresponding node as still in our state.
|
|
for ( ; aStartNode; aStartNode = aStartNode->GetParent()) {
|
|
if (!aStartNode->IsElement()) {
|
|
continue;
|
|
}
|
|
|
|
Element* labelTarget = GetLabelTarget(aStartNode->AsElement());
|
|
if (labelTarget && !labelTarget->State().HasState(aState)) {
|
|
DoStateChange(labelTarget, aState, true);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsEventStateManager::SetContentState(nsIContent *aContent, nsEventStates aState)
|
|
{
|
|
// We manage 4 states here: ACTIVE, HOVER, DRAGOVER, URLTARGET
|
|
// The input must be exactly one of them.
|
|
NS_PRECONDITION(aState == NS_EVENT_STATE_ACTIVE ||
|
|
aState == NS_EVENT_STATE_HOVER ||
|
|
aState == NS_EVENT_STATE_DRAGOVER ||
|
|
aState == NS_EVENT_STATE_URLTARGET,
|
|
"Unexpected state");
|
|
|
|
nsCOMPtr<nsIContent> notifyContent1;
|
|
nsCOMPtr<nsIContent> notifyContent2;
|
|
bool updateAncestors;
|
|
|
|
if (aState == NS_EVENT_STATE_HOVER || aState == NS_EVENT_STATE_ACTIVE) {
|
|
// Hover and active are hierarchical
|
|
updateAncestors = true;
|
|
|
|
// check to see that this state is allowed by style. Check dragover too?
|
|
// XXX Is this even what we want?
|
|
if (mCurrentTarget)
|
|
{
|
|
const nsStyleUserInterface* ui = mCurrentTarget->StyleUserInterface();
|
|
if (ui->mUserInput == NS_STYLE_USER_INPUT_NONE)
|
|
return false;
|
|
}
|
|
|
|
if (aState == NS_EVENT_STATE_ACTIVE) {
|
|
if (aContent != mActiveContent) {
|
|
notifyContent1 = aContent;
|
|
notifyContent2 = mActiveContent;
|
|
mActiveContent = aContent;
|
|
}
|
|
} else {
|
|
NS_ASSERTION(aState == NS_EVENT_STATE_HOVER, "How did that happen?");
|
|
nsIContent* newHover;
|
|
|
|
if (mPresContext->IsDynamic()) {
|
|
newHover = aContent;
|
|
} else {
|
|
NS_ASSERTION(!aContent ||
|
|
aContent->GetCurrentDoc() == mPresContext->PresShell()->GetDocument(),
|
|
"Unexpected document");
|
|
nsIFrame *frame = aContent ? aContent->GetPrimaryFrame() : nullptr;
|
|
if (frame && nsLayoutUtils::IsViewportScrollbarFrame(frame)) {
|
|
// The scrollbars of viewport should not ignore the hover state.
|
|
// Because they are *not* the content of the web page.
|
|
newHover = aContent;
|
|
} else {
|
|
// All contents of the web page should ignore the hover state.
|
|
newHover = nullptr;
|
|
}
|
|
}
|
|
|
|
if (newHover != mHoverContent) {
|
|
notifyContent1 = newHover;
|
|
notifyContent2 = mHoverContent;
|
|
mHoverContent = newHover;
|
|
}
|
|
}
|
|
} else {
|
|
updateAncestors = false;
|
|
if (aState == NS_EVENT_STATE_DRAGOVER) {
|
|
if (aContent != sDragOverContent) {
|
|
notifyContent1 = aContent;
|
|
notifyContent2 = sDragOverContent;
|
|
sDragOverContent = aContent;
|
|
}
|
|
} else if (aState == NS_EVENT_STATE_URLTARGET) {
|
|
if (aContent != mURLTargetContent) {
|
|
notifyContent1 = aContent;
|
|
notifyContent2 = mURLTargetContent;
|
|
mURLTargetContent = aContent;
|
|
}
|
|
}
|
|
}
|
|
|
|
// We need to keep track of which of notifyContent1 and notifyContent2 is
|
|
// getting the state set and which is getting it unset. If both are
|
|
// non-null, then notifyContent1 is having the state set and notifyContent2
|
|
// is having it unset. But if one of them is null, we need to keep track of
|
|
// the right thing for notifyContent1 explicitly.
|
|
bool content1StateSet = true;
|
|
if (!notifyContent1) {
|
|
// This is ok because FindCommonAncestor wouldn't find anything
|
|
// anyway if notifyContent1 is null.
|
|
notifyContent1 = notifyContent2;
|
|
notifyContent2 = nullptr;
|
|
content1StateSet = false;
|
|
}
|
|
|
|
if (notifyContent1 && mPresContext) {
|
|
EnsureDocument(mPresContext);
|
|
if (mDocument) {
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
if (updateAncestors) {
|
|
nsCOMPtr<nsIContent> commonAncestor =
|
|
FindCommonAncestor(notifyContent1, notifyContent2);
|
|
if (notifyContent2) {
|
|
// It's very important to first notify the state removal and
|
|
// then the state addition, because due to labels it's
|
|
// possible that we're removing state from some element but
|
|
// then adding it again (say because mHoverContent changed
|
|
// from a control to its label).
|
|
UpdateAncestorState(notifyContent2, commonAncestor, aState, false);
|
|
}
|
|
UpdateAncestorState(notifyContent1, commonAncestor, aState,
|
|
content1StateSet);
|
|
} else {
|
|
if (notifyContent2) {
|
|
DoStateChange(notifyContent2, aState, false);
|
|
}
|
|
DoStateChange(notifyContent1, aState, content1StateSet);
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
PLDHashOperator
|
|
nsEventStateManager::ResetLastOverForContent(const uint32_t& aIdx,
|
|
nsRefPtr<OverOutElementsWrapper>& aElemWrapper,
|
|
void* aClosure)
|
|
{
|
|
nsIContent* content = static_cast<nsIContent*>(aClosure);
|
|
if (aElemWrapper && aElemWrapper->mLastOverElement &&
|
|
nsContentUtils::ContentIsDescendantOf(aElemWrapper->mLastOverElement, content)) {
|
|
aElemWrapper->mLastOverElement = nullptr;
|
|
}
|
|
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::ContentRemoved(nsIDocument* aDocument, nsIContent* aContent)
|
|
{
|
|
/*
|
|
* Anchor and area elements when focused or hovered might make the UI to show
|
|
* the current link. We want to make sure that the UI gets informed when they
|
|
* are actually removed from the DOM.
|
|
*/
|
|
if (aContent->IsHTML() &&
|
|
(aContent->Tag() == nsGkAtoms::a || aContent->Tag() == nsGkAtoms::area) &&
|
|
(aContent->AsElement()->State().HasAtLeastOneOfStates(NS_EVENT_STATE_FOCUS |
|
|
NS_EVENT_STATE_HOVER))) {
|
|
nsGenericHTMLElement* element = static_cast<nsGenericHTMLElement*>(aContent);
|
|
element->LeaveLink(element->GetPresContext());
|
|
}
|
|
|
|
IMEStateManager::OnRemoveContent(mPresContext, aContent);
|
|
|
|
// inform the focus manager that the content is being removed. If this
|
|
// content is focused, the focus will be removed without firing events.
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm)
|
|
fm->ContentRemoved(aDocument, aContent);
|
|
|
|
if (mHoverContent &&
|
|
nsContentUtils::ContentIsDescendantOf(mHoverContent, aContent)) {
|
|
// Since hover is hierarchical, set the current hover to the
|
|
// content's parent node.
|
|
SetContentState(aContent->GetParent(), NS_EVENT_STATE_HOVER);
|
|
}
|
|
|
|
if (mActiveContent &&
|
|
nsContentUtils::ContentIsDescendantOf(mActiveContent, aContent)) {
|
|
// Active is hierarchical, so set the current active to the
|
|
// content's parent node.
|
|
SetContentState(aContent->GetParent(), NS_EVENT_STATE_ACTIVE);
|
|
}
|
|
|
|
if (sDragOverContent &&
|
|
sDragOverContent->OwnerDoc() == aContent->OwnerDoc() &&
|
|
nsContentUtils::ContentIsDescendantOf(sDragOverContent, aContent)) {
|
|
sDragOverContent = nullptr;
|
|
}
|
|
|
|
// See bug 292146 for why we want to null this out
|
|
ResetLastOverForContent(0, mMouseEnterLeaveHelper, aContent);
|
|
mPointersEnterLeaveHelper.Enumerate(&nsEventStateManager::ResetLastOverForContent, aContent);
|
|
}
|
|
|
|
bool
|
|
nsEventStateManager::EventStatusOK(WidgetGUIEvent* aEvent)
|
|
{
|
|
return !(aEvent->message == NS_MOUSE_BUTTON_DOWN &&
|
|
aEvent->AsMouseEvent()->button == WidgetMouseEvent::eLeftButton &&
|
|
!sNormalLMouseEventInProcess);
|
|
}
|
|
|
|
//-------------------------------------------
|
|
// Access Key Registration
|
|
//-------------------------------------------
|
|
void
|
|
nsEventStateManager::RegisterAccessKey(nsIContent* aContent, uint32_t aKey)
|
|
{
|
|
if (aContent && mAccessKeys.IndexOf(aContent) == -1)
|
|
mAccessKeys.AppendObject(aContent);
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::UnregisterAccessKey(nsIContent* aContent, uint32_t aKey)
|
|
{
|
|
if (aContent)
|
|
mAccessKeys.RemoveObject(aContent);
|
|
}
|
|
|
|
uint32_t
|
|
nsEventStateManager::GetRegisteredAccessKey(nsIContent* aContent)
|
|
{
|
|
MOZ_ASSERT(aContent);
|
|
|
|
if (mAccessKeys.IndexOf(aContent) == -1)
|
|
return 0;
|
|
|
|
nsAutoString accessKey;
|
|
aContent->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey, accessKey);
|
|
return accessKey.First();
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::EnsureDocument(nsPresContext* aPresContext)
|
|
{
|
|
if (!mDocument)
|
|
mDocument = aPresContext->Document();
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::FlushPendingEvents(nsPresContext* aPresContext)
|
|
{
|
|
NS_PRECONDITION(nullptr != aPresContext, "nullptr ptr");
|
|
nsIPresShell *shell = aPresContext->GetPresShell();
|
|
if (shell) {
|
|
shell->FlushPendingNotifications(Flush_InterruptibleLayout);
|
|
}
|
|
}
|
|
|
|
nsIContent*
|
|
nsEventStateManager::GetFocusedContent()
|
|
{
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (!fm || !mDocument)
|
|
return nullptr;
|
|
|
|
nsCOMPtr<nsPIDOMWindow> focusedWindow;
|
|
return nsFocusManager::GetFocusedDescendant(mDocument->GetWindow(), false,
|
|
getter_AddRefs(focusedWindow));
|
|
}
|
|
|
|
//-------------------------------------------------------
|
|
// Return true if the docshell is visible
|
|
|
|
bool
|
|
nsEventStateManager::IsShellVisible(nsIDocShell* aShell)
|
|
{
|
|
NS_ASSERTION(aShell, "docshell is null");
|
|
|
|
nsCOMPtr<nsIBaseWindow> basewin = do_QueryInterface(aShell);
|
|
if (!basewin)
|
|
return true;
|
|
|
|
bool isVisible = true;
|
|
basewin->GetVisibility(&isVisible);
|
|
|
|
// We should be doing some additional checks here so that
|
|
// we don't tab into hidden tabs of tabbrowser. -bryner
|
|
|
|
return isVisible;
|
|
}
|
|
|
|
nsresult
|
|
nsEventStateManager::DoContentCommandEvent(WidgetContentCommandEvent* aEvent)
|
|
{
|
|
EnsureDocument(mPresContext);
|
|
NS_ENSURE_TRUE(mDocument, NS_ERROR_FAILURE);
|
|
nsCOMPtr<nsPIDOMWindow> window(mDocument->GetWindow());
|
|
NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
|
|
|
|
nsCOMPtr<nsPIWindowRoot> root = window->GetTopWindowRoot();
|
|
NS_ENSURE_TRUE(root, NS_ERROR_FAILURE);
|
|
const char* cmd;
|
|
switch (aEvent->message) {
|
|
case NS_CONTENT_COMMAND_CUT:
|
|
cmd = "cmd_cut";
|
|
break;
|
|
case NS_CONTENT_COMMAND_COPY:
|
|
cmd = "cmd_copy";
|
|
break;
|
|
case NS_CONTENT_COMMAND_PASTE:
|
|
cmd = "cmd_paste";
|
|
break;
|
|
case NS_CONTENT_COMMAND_DELETE:
|
|
cmd = "cmd_delete";
|
|
break;
|
|
case NS_CONTENT_COMMAND_UNDO:
|
|
cmd = "cmd_undo";
|
|
break;
|
|
case NS_CONTENT_COMMAND_REDO:
|
|
cmd = "cmd_redo";
|
|
break;
|
|
case NS_CONTENT_COMMAND_PASTE_TRANSFERABLE:
|
|
cmd = "cmd_pasteTransferable";
|
|
break;
|
|
default:
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
nsCOMPtr<nsIController> controller;
|
|
nsresult rv = root->GetControllerForCommand(cmd, getter_AddRefs(controller));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (!controller) {
|
|
// When GetControllerForCommand succeeded but there is no controller, the
|
|
// command isn't supported.
|
|
aEvent->mIsEnabled = false;
|
|
} else {
|
|
bool canDoIt;
|
|
rv = controller->IsCommandEnabled(cmd, &canDoIt);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
aEvent->mIsEnabled = canDoIt;
|
|
if (canDoIt && !aEvent->mOnlyEnabledCheck) {
|
|
switch (aEvent->message) {
|
|
case NS_CONTENT_COMMAND_PASTE_TRANSFERABLE: {
|
|
nsCOMPtr<nsICommandController> commandController = do_QueryInterface(controller);
|
|
NS_ENSURE_STATE(commandController);
|
|
|
|
nsCOMPtr<nsICommandParams> params = do_CreateInstance("@mozilla.org/embedcomp/command-params;1", &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = params->SetISupportsValue("transferable", aEvent->mTransferable);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = commandController->DoCommandWithParams(cmd, params);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
rv = controller->DoCommand(cmd);
|
|
break;
|
|
}
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
}
|
|
aEvent->mSucceeded = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEventStateManager::DoContentCommandScrollEvent(
|
|
WidgetContentCommandEvent* aEvent)
|
|
{
|
|
NS_ENSURE_TRUE(mPresContext, NS_ERROR_NOT_AVAILABLE);
|
|
nsIPresShell* ps = mPresContext->GetPresShell();
|
|
NS_ENSURE_TRUE(ps, NS_ERROR_NOT_AVAILABLE);
|
|
NS_ENSURE_TRUE(aEvent->mScroll.mAmount != 0, NS_ERROR_INVALID_ARG);
|
|
|
|
nsIScrollableFrame::ScrollUnit scrollUnit;
|
|
switch (aEvent->mScroll.mUnit) {
|
|
case WidgetContentCommandEvent::eCmdScrollUnit_Line:
|
|
scrollUnit = nsIScrollableFrame::LINES;
|
|
break;
|
|
case WidgetContentCommandEvent::eCmdScrollUnit_Page:
|
|
scrollUnit = nsIScrollableFrame::PAGES;
|
|
break;
|
|
case WidgetContentCommandEvent::eCmdScrollUnit_Whole:
|
|
scrollUnit = nsIScrollableFrame::WHOLE;
|
|
break;
|
|
default:
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
aEvent->mSucceeded = true;
|
|
|
|
nsIScrollableFrame* sf =
|
|
ps->GetFrameToScrollAsScrollable(nsIPresShell::eEither);
|
|
aEvent->mIsEnabled = sf ?
|
|
(aEvent->mScroll.mIsHorizontal ?
|
|
CanScrollOn(sf, aEvent->mScroll.mAmount, 0) :
|
|
CanScrollOn(sf, 0, aEvent->mScroll.mAmount)) : false;
|
|
|
|
if (!aEvent->mIsEnabled || aEvent->mOnlyEnabledCheck) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIntPoint pt(0, 0);
|
|
if (aEvent->mScroll.mIsHorizontal) {
|
|
pt.x = aEvent->mScroll.mAmount;
|
|
} else {
|
|
pt.y = aEvent->mScroll.mAmount;
|
|
}
|
|
|
|
// The caller may want synchronous scrolling.
|
|
sf->ScrollBy(pt, scrollUnit, nsIScrollableFrame::INSTANT);
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::DoQuerySelectedText(WidgetQueryContentEvent* aEvent)
|
|
{
|
|
if (RemoteQueryContentEvent(aEvent)) {
|
|
return;
|
|
}
|
|
ContentEventHandler handler(mPresContext);
|
|
handler.OnQuerySelectedText(aEvent);
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::SetActiveManager(nsEventStateManager* aNewESM,
|
|
nsIContent* aContent)
|
|
{
|
|
if (sActiveESM && aNewESM != sActiveESM) {
|
|
sActiveESM->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
|
|
}
|
|
sActiveESM = aNewESM;
|
|
if (sActiveESM && aContent) {
|
|
sActiveESM->SetContentState(aContent, NS_EVENT_STATE_ACTIVE);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::ClearGlobalActiveContent(nsEventStateManager* aClearer)
|
|
{
|
|
if (aClearer) {
|
|
aClearer->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
|
|
if (sDragOverContent) {
|
|
aClearer->SetContentState(nullptr, NS_EVENT_STATE_DRAGOVER);
|
|
}
|
|
}
|
|
if (sActiveESM && aClearer != sActiveESM) {
|
|
sActiveESM->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
|
|
}
|
|
sActiveESM = nullptr;
|
|
}
|
|
|
|
/******************************************************************/
|
|
/* nsEventStateManager::DeltaAccumulator */
|
|
/******************************************************************/
|
|
|
|
void
|
|
nsEventStateManager::DeltaAccumulator::InitLineOrPageDelta(
|
|
nsIFrame* aTargetFrame,
|
|
nsEventStateManager* aESM,
|
|
WidgetWheelEvent* aEvent)
|
|
{
|
|
MOZ_ASSERT(aESM);
|
|
MOZ_ASSERT(aEvent);
|
|
|
|
// Reset if the previous wheel event is too old.
|
|
if (!mLastTime.IsNull()) {
|
|
TimeDuration duration = TimeStamp::Now() - mLastTime;
|
|
if (duration.ToMilliseconds() > nsMouseWheelTransaction::GetTimeoutTime()) {
|
|
Reset();
|
|
}
|
|
}
|
|
// If we have accumulated delta, we may need to reset it.
|
|
if (IsInTransaction()) {
|
|
// If wheel event type is changed, reset the values.
|
|
if (mHandlingDeltaMode != aEvent->deltaMode ||
|
|
mHandlingPixelOnlyDevice != aEvent->isPixelOnlyDevice) {
|
|
Reset();
|
|
} else {
|
|
// If the delta direction is changed, we should reset only the
|
|
// accumulated values.
|
|
if (mX && aEvent->deltaX && ((aEvent->deltaX > 0.0) != (mX > 0.0))) {
|
|
mX = mPendingScrollAmountX = 0.0;
|
|
}
|
|
if (mY && aEvent->deltaY && ((aEvent->deltaY > 0.0) != (mY > 0.0))) {
|
|
mY = mPendingScrollAmountY = 0.0;
|
|
}
|
|
}
|
|
}
|
|
|
|
mHandlingDeltaMode = aEvent->deltaMode;
|
|
mHandlingPixelOnlyDevice = aEvent->isPixelOnlyDevice;
|
|
|
|
// If it's handling neither pixel scroll mode for pixel only device nor
|
|
// delta values multiplied by prefs, we must not modify lineOrPageDelta
|
|
// values.
|
|
if (!(mHandlingDeltaMode == nsIDOMWheelEvent::DOM_DELTA_PIXEL &&
|
|
mHandlingPixelOnlyDevice) &&
|
|
!nsEventStateManager::WheelPrefs::GetInstance()->
|
|
NeedToComputeLineOrPageDelta(aEvent)) {
|
|
// Set the delta values to mX and mY. They would be used when above block
|
|
// resets mX/mY/mPendingScrollAmountX/mPendingScrollAmountY if the direction
|
|
// is changed.
|
|
// NOTE: We shouldn't accumulate the delta values, it might could cause
|
|
// overflow even though it's not a realistic situation.
|
|
if (aEvent->deltaX) {
|
|
mX = aEvent->deltaX;
|
|
}
|
|
if (aEvent->deltaY) {
|
|
mY = aEvent->deltaY;
|
|
}
|
|
mLastTime = TimeStamp::Now();
|
|
return;
|
|
}
|
|
|
|
mX += aEvent->deltaX;
|
|
mY += aEvent->deltaY;
|
|
|
|
if (mHandlingDeltaMode == nsIDOMWheelEvent::DOM_DELTA_PIXEL) {
|
|
// Records pixel delta values and init lineOrPageDeltaX and
|
|
// lineOrPageDeltaY for wheel events which are caused by pixel only
|
|
// devices. Ignore mouse wheel transaction for computing this. The
|
|
// lineOrPageDelta values will be used by dispatching legacy
|
|
// NS_MOUSE_SCROLL_EVENT (DOMMouseScroll) but not be used for scrolling
|
|
// of default action. The transaction should be used only for the default
|
|
// action.
|
|
nsIScrollableFrame* scrollTarget =
|
|
aESM->ComputeScrollTarget(aTargetFrame, aEvent,
|
|
COMPUTE_LEGACY_MOUSE_SCROLL_EVENT_TARGET);
|
|
nsIFrame* frame = do_QueryFrame(scrollTarget);
|
|
nsPresContext* pc =
|
|
frame ? frame->PresContext() : aTargetFrame->PresContext();
|
|
nsSize scrollAmount = aESM->GetScrollAmount(pc, aEvent, scrollTarget);
|
|
nsIntSize scrollAmountInCSSPixels(
|
|
nsPresContext::AppUnitsToIntCSSPixels(scrollAmount.width),
|
|
nsPresContext::AppUnitsToIntCSSPixels(scrollAmount.height));
|
|
|
|
aEvent->lineOrPageDeltaX = RoundDown(mX) / scrollAmountInCSSPixels.width;
|
|
aEvent->lineOrPageDeltaY = RoundDown(mY) / scrollAmountInCSSPixels.height;
|
|
|
|
mX -= aEvent->lineOrPageDeltaX * scrollAmountInCSSPixels.width;
|
|
mY -= aEvent->lineOrPageDeltaY * scrollAmountInCSSPixels.height;
|
|
} else {
|
|
aEvent->lineOrPageDeltaX = RoundDown(mX);
|
|
aEvent->lineOrPageDeltaY = RoundDown(mY);
|
|
mX -= aEvent->lineOrPageDeltaX;
|
|
mY -= aEvent->lineOrPageDeltaY;
|
|
}
|
|
|
|
mLastTime = TimeStamp::Now();
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::DeltaAccumulator::Reset()
|
|
{
|
|
mX = mY = 0.0;
|
|
mPendingScrollAmountX = mPendingScrollAmountY = 0.0;
|
|
mHandlingDeltaMode = UINT32_MAX;
|
|
mHandlingPixelOnlyDevice = false;
|
|
}
|
|
|
|
nsIntPoint
|
|
nsEventStateManager::DeltaAccumulator::ComputeScrollAmountForDefaultAction(
|
|
WidgetWheelEvent* aEvent,
|
|
const nsIntSize& aScrollAmountInDevPixels)
|
|
{
|
|
MOZ_ASSERT(aEvent);
|
|
|
|
// If the wheel event is line scroll and the delta value is computed from
|
|
// system settings, allow to override the system speed.
|
|
bool allowScrollSpeedOverride =
|
|
(!aEvent->customizedByUserPrefs &&
|
|
aEvent->deltaMode == nsIDOMWheelEvent::DOM_DELTA_LINE);
|
|
DeltaValues acceleratedDelta =
|
|
nsMouseWheelTransaction::AccelerateWheelDelta(aEvent,
|
|
allowScrollSpeedOverride);
|
|
|
|
nsIntPoint result(0, 0);
|
|
if (aEvent->deltaMode == nsIDOMWheelEvent::DOM_DELTA_PIXEL) {
|
|
mPendingScrollAmountX += acceleratedDelta.deltaX;
|
|
mPendingScrollAmountY += acceleratedDelta.deltaY;
|
|
} else {
|
|
mPendingScrollAmountX +=
|
|
aScrollAmountInDevPixels.width * acceleratedDelta.deltaX;
|
|
mPendingScrollAmountY +=
|
|
aScrollAmountInDevPixels.height * acceleratedDelta.deltaY;
|
|
}
|
|
result.x = RoundDown(mPendingScrollAmountX);
|
|
result.y = RoundDown(mPendingScrollAmountY);
|
|
mPendingScrollAmountX -= result.x;
|
|
mPendingScrollAmountY -= result.y;
|
|
|
|
return result;
|
|
}
|
|
|
|
/******************************************************************/
|
|
/* nsEventStateManager::WheelPrefs */
|
|
/******************************************************************/
|
|
|
|
// static
|
|
nsEventStateManager::WheelPrefs*
|
|
nsEventStateManager::WheelPrefs::GetInstance()
|
|
{
|
|
if (!sInstance) {
|
|
sInstance = new WheelPrefs();
|
|
}
|
|
return sInstance;
|
|
}
|
|
|
|
// static
|
|
void
|
|
nsEventStateManager::WheelPrefs::Shutdown()
|
|
{
|
|
delete sInstance;
|
|
sInstance = nullptr;
|
|
}
|
|
|
|
// static
|
|
void
|
|
nsEventStateManager::WheelPrefs::OnPrefChanged(const char* aPrefName,
|
|
void* aClosure)
|
|
{
|
|
// forget all prefs, it's not problem for performance.
|
|
sInstance->Reset();
|
|
DeltaAccumulator::GetInstance()->Reset();
|
|
}
|
|
|
|
nsEventStateManager::WheelPrefs::WheelPrefs()
|
|
{
|
|
Reset();
|
|
Preferences::RegisterCallback(OnPrefChanged, "mousewheel.", nullptr);
|
|
}
|
|
|
|
nsEventStateManager::WheelPrefs::~WheelPrefs()
|
|
{
|
|
Preferences::UnregisterCallback(OnPrefChanged, "mousewheel.", nullptr);
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::WheelPrefs::Reset()
|
|
{
|
|
memset(mInit, 0, sizeof(mInit));
|
|
|
|
}
|
|
|
|
nsEventStateManager::WheelPrefs::Index
|
|
nsEventStateManager::WheelPrefs::GetIndexFor(WidgetWheelEvent* aEvent)
|
|
{
|
|
if (!aEvent) {
|
|
return INDEX_DEFAULT;
|
|
}
|
|
|
|
Modifiers modifiers =
|
|
(aEvent->modifiers & (MODIFIER_ALT |
|
|
MODIFIER_CONTROL |
|
|
MODIFIER_META |
|
|
MODIFIER_SHIFT |
|
|
MODIFIER_OS));
|
|
|
|
switch (modifiers) {
|
|
case MODIFIER_ALT:
|
|
return INDEX_ALT;
|
|
case MODIFIER_CONTROL:
|
|
return INDEX_CONTROL;
|
|
case MODIFIER_META:
|
|
return INDEX_META;
|
|
case MODIFIER_SHIFT:
|
|
return INDEX_SHIFT;
|
|
case MODIFIER_OS:
|
|
return INDEX_OS;
|
|
default:
|
|
// If two or more modifier keys are pressed, we should use default
|
|
// settings.
|
|
return INDEX_DEFAULT;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::WheelPrefs::GetBasePrefName(
|
|
nsEventStateManager::WheelPrefs::Index aIndex,
|
|
nsACString& aBasePrefName)
|
|
{
|
|
aBasePrefName.AssignLiteral("mousewheel.");
|
|
switch (aIndex) {
|
|
case INDEX_ALT:
|
|
aBasePrefName.AppendLiteral("with_alt.");
|
|
break;
|
|
case INDEX_CONTROL:
|
|
aBasePrefName.AppendLiteral("with_control.");
|
|
break;
|
|
case INDEX_META:
|
|
aBasePrefName.AppendLiteral("with_meta.");
|
|
break;
|
|
case INDEX_SHIFT:
|
|
aBasePrefName.AppendLiteral("with_shift.");
|
|
break;
|
|
case INDEX_OS:
|
|
aBasePrefName.AppendLiteral("with_win.");
|
|
break;
|
|
case INDEX_DEFAULT:
|
|
default:
|
|
aBasePrefName.AppendLiteral("default.");
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::WheelPrefs::Init(
|
|
nsEventStateManager::WheelPrefs::Index aIndex)
|
|
{
|
|
if (mInit[aIndex]) {
|
|
return;
|
|
}
|
|
mInit[aIndex] = true;
|
|
|
|
nsAutoCString basePrefName;
|
|
GetBasePrefName(aIndex, basePrefName);
|
|
|
|
nsAutoCString prefNameX(basePrefName);
|
|
prefNameX.AppendLiteral("delta_multiplier_x");
|
|
mMultiplierX[aIndex] =
|
|
static_cast<double>(Preferences::GetInt(prefNameX.get(), 100)) / 100;
|
|
|
|
nsAutoCString prefNameY(basePrefName);
|
|
prefNameY.AppendLiteral("delta_multiplier_y");
|
|
mMultiplierY[aIndex] =
|
|
static_cast<double>(Preferences::GetInt(prefNameY.get(), 100)) / 100;
|
|
|
|
nsAutoCString prefNameZ(basePrefName);
|
|
prefNameZ.AppendLiteral("delta_multiplier_z");
|
|
mMultiplierZ[aIndex] =
|
|
static_cast<double>(Preferences::GetInt(prefNameZ.get(), 100)) / 100;
|
|
|
|
nsAutoCString prefNameAction(basePrefName);
|
|
prefNameAction.AppendLiteral("action");
|
|
int32_t action = Preferences::GetInt(prefNameAction.get(), ACTION_SCROLL);
|
|
if (action < int32_t(ACTION_NONE) || action > int32_t(ACTION_LAST)) {
|
|
NS_WARNING("Unsupported action pref value, replaced with 'Scroll'.");
|
|
action = ACTION_SCROLL;
|
|
}
|
|
mActions[aIndex] = static_cast<Action>(action);
|
|
|
|
// Compute action values overridden by .override_x pref.
|
|
// At present, override is possible only for the x-direction
|
|
// because this pref is introduced mainly for tilt wheels.
|
|
prefNameAction.AppendLiteral(".override_x");
|
|
int32_t actionOverrideX = Preferences::GetInt(prefNameAction.get(), -1);
|
|
if (actionOverrideX < -1 || actionOverrideX > int32_t(ACTION_LAST)) {
|
|
NS_WARNING("Unsupported action override pref value, didn't override.");
|
|
actionOverrideX = -1;
|
|
}
|
|
mOverriddenActionsX[aIndex] = (actionOverrideX == -1)
|
|
? static_cast<Action>(action)
|
|
: static_cast<Action>(actionOverrideX);
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::WheelPrefs::ApplyUserPrefsToDelta(WidgetWheelEvent* aEvent)
|
|
{
|
|
Index index = GetIndexFor(aEvent);
|
|
Init(index);
|
|
|
|
aEvent->deltaX *= mMultiplierX[index];
|
|
aEvent->deltaY *= mMultiplierY[index];
|
|
aEvent->deltaZ *= mMultiplierZ[index];
|
|
|
|
// If the multiplier is 1.0 or -1.0, i.e., it doesn't change the absolute
|
|
// value, we should use lineOrPageDelta values which were set by widget.
|
|
// Otherwise, we need to compute them from accumulated delta values.
|
|
if (!NeedToComputeLineOrPageDelta(aEvent)) {
|
|
aEvent->lineOrPageDeltaX *= static_cast<int32_t>(mMultiplierX[index]);
|
|
aEvent->lineOrPageDeltaY *= static_cast<int32_t>(mMultiplierY[index]);
|
|
} else {
|
|
aEvent->lineOrPageDeltaX = 0;
|
|
aEvent->lineOrPageDeltaY = 0;
|
|
}
|
|
|
|
aEvent->customizedByUserPrefs =
|
|
((mMultiplierX[index] != 1.0) || (mMultiplierY[index] != 1.0) ||
|
|
(mMultiplierZ[index] != 1.0));
|
|
}
|
|
|
|
void
|
|
nsEventStateManager::WheelPrefs::CancelApplyingUserPrefsFromOverflowDelta(
|
|
WidgetWheelEvent* aEvent)
|
|
{
|
|
Index index = GetIndexFor(aEvent);
|
|
Init(index);
|
|
|
|
// XXX If the multiplier pref value is negative, the scroll direction was
|
|
// changed and caused to scroll different direction. In such case,
|
|
// this method reverts the sign of overflowDelta. Does it make widget
|
|
// happy? Although, widget can know the pref applied delta values by
|
|
// referrencing the deltaX and deltaY of the event.
|
|
|
|
if (mMultiplierX[index]) {
|
|
aEvent->overflowDeltaX /= mMultiplierX[index];
|
|
}
|
|
if (mMultiplierY[index]) {
|
|
aEvent->overflowDeltaY /= mMultiplierY[index];
|
|
}
|
|
}
|
|
|
|
nsEventStateManager::WheelPrefs::Action
|
|
nsEventStateManager::WheelPrefs::ComputeActionFor(WidgetWheelEvent* aEvent)
|
|
{
|
|
Index index = GetIndexFor(aEvent);
|
|
Init(index);
|
|
|
|
bool deltaXPreferred =
|
|
(Abs(aEvent->deltaX) > Abs(aEvent->deltaY) &&
|
|
Abs(aEvent->deltaX) > Abs(aEvent->deltaZ));
|
|
Action* actions = deltaXPreferred ? mOverriddenActionsX : mActions;
|
|
if (actions[index] == ACTION_NONE || actions[index] == ACTION_SCROLL) {
|
|
return actions[index];
|
|
}
|
|
|
|
// Momentum events shouldn't run special actions.
|
|
if (aEvent->isMomentum) {
|
|
// Use the default action. Note that user might kill the wheel scrolling.
|
|
Init(INDEX_DEFAULT);
|
|
return (actions[INDEX_DEFAULT] == ACTION_SCROLL) ? ACTION_SCROLL :
|
|
ACTION_NONE;
|
|
}
|
|
|
|
return actions[index];
|
|
}
|
|
|
|
bool
|
|
nsEventStateManager::WheelPrefs::NeedToComputeLineOrPageDelta(
|
|
WidgetWheelEvent* aEvent)
|
|
{
|
|
Index index = GetIndexFor(aEvent);
|
|
Init(index);
|
|
|
|
return (mMultiplierX[index] != 1.0 && mMultiplierX[index] != -1.0) ||
|
|
(mMultiplierY[index] != 1.0 && mMultiplierY[index] != -1.0);
|
|
}
|
|
|
|
bool
|
|
nsEventStateManager::WheelPrefs::IsOverOnePageScrollAllowedX(
|
|
WidgetWheelEvent* aEvent)
|
|
{
|
|
Index index = GetIndexFor(aEvent);
|
|
Init(index);
|
|
return Abs(mMultiplierX[index]) >=
|
|
MIN_MULTIPLIER_VALUE_ALLOWING_OVER_ONE_PAGE_SCROLL;
|
|
}
|
|
|
|
bool
|
|
nsEventStateManager::WheelPrefs::IsOverOnePageScrollAllowedY(
|
|
WidgetWheelEvent* aEvent)
|
|
{
|
|
Index index = GetIndexFor(aEvent);
|
|
Init(index);
|
|
return Abs(mMultiplierY[index]) >=
|
|
MIN_MULTIPLIER_VALUE_ALLOWING_OVER_ONE_PAGE_SCROLL;
|
|
}
|
|
|
|
/******************************************************************/
|
|
/* nsEventStateManager::Prefs */
|
|
/******************************************************************/
|
|
|
|
bool nsEventStateManager::Prefs::sKeyCausesActivation = true;
|
|
bool nsEventStateManager::Prefs::sClickHoldContextMenu = false;
|
|
int32_t nsEventStateManager::Prefs::sGenericAccessModifierKey = -1;
|
|
int32_t nsEventStateManager::Prefs::sChromeAccessModifierMask = 0;
|
|
int32_t nsEventStateManager::Prefs::sContentAccessModifierMask = 0;
|
|
|
|
// static
|
|
void
|
|
nsEventStateManager::Prefs::Init()
|
|
{
|
|
DebugOnly<nsresult> rv =
|
|
Preferences::AddBoolVarCache(&sKeyCausesActivation,
|
|
"accessibility.accesskeycausesactivation",
|
|
sKeyCausesActivation);
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv),
|
|
"Failed to observe \"accessibility.accesskeycausesactivation\"");
|
|
rv = Preferences::AddBoolVarCache(&sClickHoldContextMenu,
|
|
"ui.click_hold_context_menus",
|
|
sClickHoldContextMenu);
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv),
|
|
"Failed to observe \"ui.click_hold_context_menus\"");
|
|
rv = Preferences::AddIntVarCache(&sGenericAccessModifierKey,
|
|
"ui.key.generalAccessKey",
|
|
sGenericAccessModifierKey);
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv),
|
|
"Failed to observe \"ui.key.generalAccessKey\"");
|
|
rv = Preferences::AddIntVarCache(&sChromeAccessModifierMask,
|
|
"ui.key.chromeAccess",
|
|
sChromeAccessModifierMask);
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv),
|
|
"Failed to observe \"ui.key.chromeAccess\"");
|
|
rv = Preferences::AddIntVarCache(&sContentAccessModifierMask,
|
|
"ui.key.contentAccess",
|
|
sContentAccessModifierMask);
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv),
|
|
"Failed to observe \"ui.key.contentAccess\"");
|
|
|
|
rv = Preferences::RegisterCallback(OnChange, "dom.popup_allowed_events");
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv),
|
|
"Failed to observe \"dom.popup_allowed_events\"");
|
|
}
|
|
|
|
// static
|
|
void
|
|
nsEventStateManager::Prefs::OnChange(const char* aPrefName, void*)
|
|
{
|
|
nsDependentCString prefName(aPrefName);
|
|
if (prefName.EqualsLiteral("dom.popup_allowed_events")) {
|
|
Event::PopupAllowedEventsChanged();
|
|
}
|
|
}
|
|
|
|
// static
|
|
void
|
|
nsEventStateManager::Prefs::Shutdown()
|
|
{
|
|
Preferences::UnregisterCallback(OnChange, "dom.popup_allowed_events");
|
|
}
|
|
|
|
// static
|
|
int32_t
|
|
nsEventStateManager::Prefs::ChromeAccessModifierMask()
|
|
{
|
|
return GetAccessModifierMask(nsIDocShellTreeItem::typeChrome);
|
|
}
|
|
|
|
// static
|
|
int32_t
|
|
nsEventStateManager::Prefs::ContentAccessModifierMask()
|
|
{
|
|
return GetAccessModifierMask(nsIDocShellTreeItem::typeContent);
|
|
}
|
|
|
|
// static
|
|
int32_t
|
|
nsEventStateManager::Prefs::GetAccessModifierMask(int32_t aItemType)
|
|
{
|
|
switch (sGenericAccessModifierKey) {
|
|
case -1: break; // use the individual prefs
|
|
case nsIDOMKeyEvent::DOM_VK_SHIFT: return NS_MODIFIER_SHIFT;
|
|
case nsIDOMKeyEvent::DOM_VK_CONTROL: return NS_MODIFIER_CONTROL;
|
|
case nsIDOMKeyEvent::DOM_VK_ALT: return NS_MODIFIER_ALT;
|
|
case nsIDOMKeyEvent::DOM_VK_META: return NS_MODIFIER_META;
|
|
case nsIDOMKeyEvent::DOM_VK_WIN: return NS_MODIFIER_OS;
|
|
default: return 0;
|
|
}
|
|
|
|
switch (aItemType) {
|
|
case nsIDocShellTreeItem::typeChrome:
|
|
return sChromeAccessModifierMask;
|
|
case nsIDocShellTreeItem::typeContent:
|
|
return sContentAccessModifierMask;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/******************************************************************/
|
|
/* mozilla::AutoHandlingUserInputStatePusher */
|
|
/******************************************************************/
|
|
|
|
AutoHandlingUserInputStatePusher::AutoHandlingUserInputStatePusher(
|
|
bool aIsHandlingUserInput,
|
|
WidgetEvent* aEvent,
|
|
nsIDocument* aDocument) :
|
|
mIsHandlingUserInput(aIsHandlingUserInput),
|
|
mIsMouseDown(aEvent && aEvent->message == NS_MOUSE_BUTTON_DOWN),
|
|
mResetFMMouseDownState(false)
|
|
{
|
|
if (!aIsHandlingUserInput) {
|
|
return;
|
|
}
|
|
nsEventStateManager::StartHandlingUserInput();
|
|
if (!mIsMouseDown) {
|
|
return;
|
|
}
|
|
nsIPresShell::SetCapturingContent(nullptr, 0);
|
|
nsIPresShell::AllowMouseCapture(true);
|
|
if (!aDocument || !aEvent->mFlags.mIsTrusted) {
|
|
return;
|
|
}
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
NS_ENSURE_TRUE_VOID(fm);
|
|
fm->SetMouseButtonDownHandlingDocument(aDocument);
|
|
mResetFMMouseDownState = true;
|
|
}
|
|
|
|
AutoHandlingUserInputStatePusher::~AutoHandlingUserInputStatePusher()
|
|
{
|
|
if (!mIsHandlingUserInput) {
|
|
return;
|
|
}
|
|
nsEventStateManager::StopHandlingUserInput();
|
|
if (!mIsMouseDown) {
|
|
return;
|
|
}
|
|
nsIPresShell::AllowMouseCapture(false);
|
|
if (!mResetFMMouseDownState) {
|
|
return;
|
|
}
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
NS_ENSURE_TRUE_VOID(fm);
|
|
fm->SetMouseButtonDownHandlingDocument(nullptr);
|
|
}
|
|
|