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de337ec2e1
AccessibleCaretManager uses scroll and reflow observers to detect when to update the position of carets. However, it currently only registers the observers on the leaf docshell, so only changes in the innermost iframe are detected; that is, it fails to update caret position when an ancestor iframe is scrolled. This patch makes it register observers on all ancestor docshells so that changes in ancestor iframes are detected as well. MozReview-Commit-ID: bwiSjj8936 --HG-- extra : rebase_source : d567f1d8df67f79769c6532b061e2df1e5ab878f
783 lines
21 KiB
C++
783 lines
21 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 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 "AccessibleCaretEventHub.h"
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#include "AccessibleCaretLogger.h"
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#include "AccessibleCaretManager.h"
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#include "Layers.h"
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#include "gfxPrefs.h"
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#include "mozilla/AutoRestore.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/Preferences.h"
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#include "mozilla/dom/MouseEventBinding.h"
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#include "nsCanvasFrame.h"
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#include "nsDocShell.h"
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#include "nsFocusManager.h"
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#include "nsFrameSelection.h"
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#include "nsITimer.h"
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#include "nsPresContext.h"
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namespace mozilla {
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#undef AC_LOG
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#define AC_LOG(message, ...) \
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AC_LOG_BASE("AccessibleCaretEventHub (%p): " message, this, ##__VA_ARGS__);
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#undef AC_LOGV
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#define AC_LOGV(message, ...) \
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AC_LOGV_BASE("AccessibleCaretEventHub (%p): " message, this, ##__VA_ARGS__);
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NS_IMPL_ISUPPORTS(AccessibleCaretEventHub, nsIReflowObserver, nsIScrollObserver,
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nsISelectionListener, nsISupportsWeakReference);
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// -----------------------------------------------------------------------------
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// NoActionState
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//
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class AccessibleCaretEventHub::NoActionState
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: public AccessibleCaretEventHub::State
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{
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public:
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const char* Name() const override { return "NoActionState"; }
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MOZ_CAN_RUN_SCRIPT
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nsEventStatus OnPress(AccessibleCaretEventHub* aContext,
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const nsPoint& aPoint,
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int32_t aTouchId,
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EventClassID aEventClass) override
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{
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nsEventStatus rv = nsEventStatus_eIgnore;
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if (NS_SUCCEEDED(aContext->mManager->PressCaret(aPoint, aEventClass))) {
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aContext->SetState(AccessibleCaretEventHub::PressCaretState());
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rv = nsEventStatus_eConsumeNoDefault;
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} else {
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aContext->SetState(AccessibleCaretEventHub::PressNoCaretState());
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}
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aContext->mPressPoint = aPoint;
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aContext->mActiveTouchId = aTouchId;
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return rv;
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}
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MOZ_CAN_RUN_SCRIPT
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void OnScrollStart(AccessibleCaretEventHub* aContext) override
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{
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aContext->mManager->OnScrollStart();
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aContext->SetState(AccessibleCaretEventHub::ScrollState());
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}
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MOZ_CAN_RUN_SCRIPT
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void OnScrollPositionChanged(AccessibleCaretEventHub* aContext) override
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{
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aContext->mManager->OnScrollPositionChanged();
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}
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MOZ_CAN_RUN_SCRIPT
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void OnSelectionChanged(AccessibleCaretEventHub* aContext,
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nsIDOMDocument* aDoc,
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nsISelection* aSel,
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int16_t aReason) override
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{
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aContext->mManager->OnSelectionChanged(aDoc, aSel, aReason);
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}
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MOZ_CAN_RUN_SCRIPT
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void OnBlur(AccessibleCaretEventHub* aContext,
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bool aIsLeavingDocument) override
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{
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aContext->mManager->OnBlur();
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}
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MOZ_CAN_RUN_SCRIPT
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void OnReflow(AccessibleCaretEventHub* aContext) override
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{
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aContext->mManager->OnReflow();
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}
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void Enter(AccessibleCaretEventHub* aContext) override
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{
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aContext->mPressPoint = nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE);
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aContext->mActiveTouchId = kInvalidTouchId;
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}
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};
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// -----------------------------------------------------------------------------
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// PressCaretState: Always consume the event since we've pressed on the caret.
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//
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class AccessibleCaretEventHub::PressCaretState
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: public AccessibleCaretEventHub::State
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{
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public:
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const char* Name() const override { return "PressCaretState"; }
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MOZ_CAN_RUN_SCRIPT
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nsEventStatus OnMove(AccessibleCaretEventHub* aContext,
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const nsPoint& aPoint) override
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{
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if (aContext->MoveDistanceIsLarge(aPoint)) {
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if (NS_SUCCEEDED(aContext->mManager->DragCaret(aPoint))) {
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aContext->SetState(AccessibleCaretEventHub::DragCaretState());
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}
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}
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return nsEventStatus_eConsumeNoDefault;
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}
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MOZ_CAN_RUN_SCRIPT
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nsEventStatus OnRelease(AccessibleCaretEventHub* aContext) override
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{
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aContext->mManager->ReleaseCaret();
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aContext->mManager->TapCaret(aContext->mPressPoint);
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aContext->SetState(AccessibleCaretEventHub::NoActionState());
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return nsEventStatus_eConsumeNoDefault;
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}
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nsEventStatus OnLongTap(AccessibleCaretEventHub* aContext,
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const nsPoint& aPoint) override
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{
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return nsEventStatus_eConsumeNoDefault;
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}
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};
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// -----------------------------------------------------------------------------
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// DragCaretState: Always consume the event since we've pressed on the caret.
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//
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class AccessibleCaretEventHub::DragCaretState
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: public AccessibleCaretEventHub::State
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{
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public:
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const char* Name() const override { return "DragCaretState"; }
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MOZ_CAN_RUN_SCRIPT
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nsEventStatus OnMove(AccessibleCaretEventHub* aContext,
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const nsPoint& aPoint) override
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{
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aContext->mManager->DragCaret(aPoint);
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return nsEventStatus_eConsumeNoDefault;
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}
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MOZ_CAN_RUN_SCRIPT
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nsEventStatus OnRelease(AccessibleCaretEventHub* aContext) override
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{
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aContext->mManager->ReleaseCaret();
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aContext->SetState(AccessibleCaretEventHub::NoActionState());
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return nsEventStatus_eConsumeNoDefault;
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}
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};
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// -----------------------------------------------------------------------------
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// PressNoCaretState
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//
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class AccessibleCaretEventHub::PressNoCaretState
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: public AccessibleCaretEventHub::State
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{
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public:
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const char* Name() const override { return "PressNoCaretState"; }
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nsEventStatus OnMove(AccessibleCaretEventHub* aContext,
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const nsPoint& aPoint) override
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{
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if (aContext->MoveDistanceIsLarge(aPoint)) {
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aContext->SetState(AccessibleCaretEventHub::NoActionState());
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}
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return nsEventStatus_eIgnore;
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}
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nsEventStatus OnRelease(AccessibleCaretEventHub* aContext) override
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{
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aContext->SetState(AccessibleCaretEventHub::NoActionState());
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return nsEventStatus_eIgnore;
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}
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MOZ_CAN_RUN_SCRIPT
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nsEventStatus OnLongTap(AccessibleCaretEventHub* aContext,
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const nsPoint& aPoint) override
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{
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aContext->SetState(AccessibleCaretEventHub::LongTapState());
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return aContext->GetState()->OnLongTap(aContext, aPoint);
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}
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MOZ_CAN_RUN_SCRIPT
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void OnScrollStart(AccessibleCaretEventHub* aContext) override
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{
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aContext->mManager->OnScrollStart();
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aContext->SetState(AccessibleCaretEventHub::ScrollState());
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}
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MOZ_CAN_RUN_SCRIPT
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void OnBlur(AccessibleCaretEventHub* aContext,
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bool aIsLeavingDocument) override
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{
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aContext->mManager->OnBlur();
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if (aIsLeavingDocument) {
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aContext->SetState(AccessibleCaretEventHub::NoActionState());
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}
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}
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MOZ_CAN_RUN_SCRIPT
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void OnSelectionChanged(AccessibleCaretEventHub* aContext,
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nsIDOMDocument* aDoc,
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nsISelection* aSel,
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int16_t aReason) override
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{
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aContext->mManager->OnSelectionChanged(aDoc, aSel, aReason);
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}
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MOZ_CAN_RUN_SCRIPT
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void OnReflow(AccessibleCaretEventHub* aContext) override
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{
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aContext->mManager->OnReflow();
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}
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void Enter(AccessibleCaretEventHub* aContext) override
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{
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aContext->LaunchLongTapInjector();
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}
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void Leave(AccessibleCaretEventHub* aContext) override
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{
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aContext->CancelLongTapInjector();
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}
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};
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// -----------------------------------------------------------------------------
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// ScrollState
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//
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class AccessibleCaretEventHub::ScrollState
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: public AccessibleCaretEventHub::State
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{
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public:
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const char* Name() const override { return "ScrollState"; }
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MOZ_CAN_RUN_SCRIPT
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void OnScrollEnd(AccessibleCaretEventHub* aContext) override
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{
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aContext->mManager->OnScrollEnd();
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aContext->SetState(AccessibleCaretEventHub::NoActionState());
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}
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MOZ_CAN_RUN_SCRIPT
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void OnScrollPositionChanged(AccessibleCaretEventHub* aContext) override
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{
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aContext->mManager->OnScrollPositionChanged();
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}
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MOZ_CAN_RUN_SCRIPT
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void OnBlur(AccessibleCaretEventHub* aContext,
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bool aIsLeavingDocument) override
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{
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aContext->mManager->OnBlur();
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if (aIsLeavingDocument) {
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aContext->SetState(AccessibleCaretEventHub::NoActionState());
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}
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}
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};
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// -----------------------------------------------------------------------------
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// LongTapState
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//
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class AccessibleCaretEventHub::LongTapState
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: public AccessibleCaretEventHub::State
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{
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public:
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const char* Name() const override { return "LongTapState"; }
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MOZ_CAN_RUN_SCRIPT
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nsEventStatus OnLongTap(AccessibleCaretEventHub* aContext,
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const nsPoint& aPoint) override
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{
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// In general text selection is lower-priority than the context menu. If
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// we consume this long-press event, then it prevents the context menu from
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// showing up on desktop Firefox (because that happens on long-tap-up, if
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// the long-tap was not cancelled). So we return eIgnore instead.
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aContext->mManager->SelectWordOrShortcut(aPoint);
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return nsEventStatus_eIgnore;
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}
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nsEventStatus OnRelease(AccessibleCaretEventHub* aContext) override
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{
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aContext->SetState(AccessibleCaretEventHub::NoActionState());
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// Do not consume the release since the press is not consumed in
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// PressNoCaretState either.
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return nsEventStatus_eIgnore;
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}
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MOZ_CAN_RUN_SCRIPT
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void OnScrollStart(AccessibleCaretEventHub* aContext) override
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{
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aContext->mManager->OnScrollStart();
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aContext->SetState(AccessibleCaretEventHub::ScrollState());
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}
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MOZ_CAN_RUN_SCRIPT
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void OnReflow(AccessibleCaretEventHub* aContext) override
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{
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aContext->mManager->OnReflow();
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}
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};
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// -----------------------------------------------------------------------------
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// Implementation of AccessibleCaretEventHub methods
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//
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AccessibleCaretEventHub::State*
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AccessibleCaretEventHub::GetState() const
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{
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return mState;
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}
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void
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AccessibleCaretEventHub::SetState(State* aState)
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{
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MOZ_ASSERT(aState);
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AC_LOG("%s -> %s", mState->Name(), aState->Name());
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mState->Leave(this);
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mState = aState;
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mState->Enter(this);
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}
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MOZ_IMPL_STATE_CLASS_GETTER(NoActionState)
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MOZ_IMPL_STATE_CLASS_GETTER(PressCaretState)
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MOZ_IMPL_STATE_CLASS_GETTER(DragCaretState)
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MOZ_IMPL_STATE_CLASS_GETTER(PressNoCaretState)
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MOZ_IMPL_STATE_CLASS_GETTER(ScrollState)
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MOZ_IMPL_STATE_CLASS_GETTER(LongTapState)
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bool AccessibleCaretEventHub::sUseLongTapInjector = false;
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AccessibleCaretEventHub::AccessibleCaretEventHub(nsIPresShell* aPresShell)
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: mPresShell(aPresShell)
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{
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static bool prefsAdded = false;
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if (!prefsAdded) {
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Preferences::AddBoolVarCache(
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&sUseLongTapInjector, "layout.accessiblecaret.use_long_tap_injector");
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prefsAdded = true;
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}
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}
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void
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AccessibleCaretEventHub::Init()
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{
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if (mInitialized && mManager) {
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mManager->OnFrameReconstruction();
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}
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if (mInitialized || !mPresShell || !mPresShell->GetCanvasFrame() ||
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!mPresShell->GetCanvasFrame()->GetCustomContentContainer()) {
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return;
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}
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// Without nsAutoScriptBlocker, the script might be run after constructing
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// mFirstCaret in AccessibleCaretManager's constructor, which might destructs
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// the whole frame tree. Therefore we'll fail to construct mSecondCaret
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// because we cannot get root frame or canvas frame from mPresShell to inject
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// anonymous content. To avoid that, we protect Init() by nsAutoScriptBlocker.
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// To reproduce, run "./mach crashtest layout/base/crashtests/897852.html"
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// without the following scriptBlocker.
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nsAutoScriptBlocker scriptBlocker;
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nsPresContext* presContext = mPresShell->GetPresContext();
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MOZ_ASSERT(presContext, "PresContext should be given in PresShell::Init()");
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nsIDocShell* docShell = presContext->GetDocShell();
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if (!docShell) {
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return;
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}
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nsCOMPtr<nsIDocShell> curDocShell = docShell;
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do {
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curDocShell->AddWeakReflowObserver(this);
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curDocShell->AddWeakScrollObserver(this);
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nsCOMPtr<nsIDocShellTreeItem> tmp;
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curDocShell->GetSameTypeParent(getter_AddRefs(tmp));
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curDocShell = do_QueryInterface(tmp);
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} while (curDocShell);
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mDocShell = static_cast<nsDocShell*>(docShell);
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if (sUseLongTapInjector) {
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mLongTapInjectorTimer = NS_NewTimer();
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}
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mManager = MakeUnique<AccessibleCaretManager>(mPresShell);
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mInitialized = true;
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}
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void
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AccessibleCaretEventHub::Terminate()
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{
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if (!mInitialized) {
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return;
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}
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nsCOMPtr<nsIDocShell> curDocShell = mDocShell.get();
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while (curDocShell) {
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curDocShell->RemoveWeakReflowObserver(this);
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curDocShell->RemoveWeakScrollObserver(this);
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nsCOMPtr<nsIDocShellTreeItem> tmp;
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curDocShell->GetSameTypeParent(getter_AddRefs(tmp));
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curDocShell = do_QueryInterface(tmp);
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}
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if (mLongTapInjectorTimer) {
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mLongTapInjectorTimer->Cancel();
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}
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mManager->Terminate();
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mPresShell = nullptr;
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mInitialized = false;
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}
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nsEventStatus
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AccessibleCaretEventHub::HandleEvent(WidgetEvent* aEvent)
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{
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nsEventStatus status = nsEventStatus_eIgnore;
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if (!mInitialized) {
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return status;
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}
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MOZ_ASSERT(mRefCnt.get() > 1, "Expect caller holds us as well!");
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switch (aEvent->mClass) {
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case eMouseEventClass:
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status = HandleMouseEvent(aEvent->AsMouseEvent());
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break;
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case eTouchEventClass:
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status = HandleTouchEvent(aEvent->AsTouchEvent());
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break;
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case eKeyboardEventClass:
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status = HandleKeyboardEvent(aEvent->AsKeyboardEvent());
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break;
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default:
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break;
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}
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return status;
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}
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nsEventStatus
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AccessibleCaretEventHub::HandleMouseEvent(WidgetMouseEvent* aEvent)
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{
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nsEventStatus rv = nsEventStatus_eIgnore;
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if (aEvent->button != WidgetMouseEvent::eLeftButton) {
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return rv;
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}
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int32_t id =
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(mActiveTouchId == kInvalidTouchId ? kDefaultTouchId : mActiveTouchId);
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nsPoint point = GetMouseEventPosition(aEvent);
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if (aEvent->mMessage == eMouseDown ||
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aEvent->mMessage == eMouseUp ||
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aEvent->mMessage == eMouseClick ||
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aEvent->mMessage == eMouseDoubleClick ||
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aEvent->mMessage == eMouseLongTap) {
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// Don't reset the source on mouse movement since that can
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// happen anytime, even randomly during a touch sequence.
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mManager->SetLastInputSource(aEvent->inputSource);
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}
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switch (aEvent->mMessage) {
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case eMouseDown:
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AC_LOGV("Before eMouseDown, state: %s", mState->Name());
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rv = mState->OnPress(this, point, id, eMouseEventClass);
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AC_LOGV("After eMouseDown, state: %s, consume: %d", mState->Name(), rv);
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break;
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case eMouseMove:
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AC_LOGV("Before eMouseMove, state: %s", mState->Name());
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rv = mState->OnMove(this, point);
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AC_LOGV("After eMouseMove, state: %s, consume: %d", mState->Name(), rv);
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break;
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case eMouseUp:
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AC_LOGV("Before eMouseUp, state: %s", mState->Name());
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rv = mState->OnRelease(this);
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AC_LOGV("After eMouseUp, state: %s, consume: %d", mState->Name(), rv);
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break;
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case eMouseLongTap:
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AC_LOGV("Before eMouseLongTap, state: %s", mState->Name());
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rv = mState->OnLongTap(this, point);
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AC_LOGV("After eMouseLongTap, state: %s, consume: %d", mState->Name(),
|
|
rv);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsEventStatus
|
|
AccessibleCaretEventHub::HandleTouchEvent(WidgetTouchEvent* aEvent)
|
|
{
|
|
if (aEvent->mTouches.IsEmpty()) {
|
|
AC_LOG("%s: Receive a touch event without any touch data!", __FUNCTION__);
|
|
return nsEventStatus_eIgnore;
|
|
}
|
|
|
|
nsEventStatus rv = nsEventStatus_eIgnore;
|
|
|
|
int32_t id =
|
|
(mActiveTouchId == kInvalidTouchId ? aEvent->mTouches[0]->Identifier()
|
|
: mActiveTouchId);
|
|
nsPoint point = GetTouchEventPosition(aEvent, id);
|
|
|
|
mManager->SetLastInputSource(MouseEventBinding::MOZ_SOURCE_TOUCH);
|
|
|
|
switch (aEvent->mMessage) {
|
|
case eTouchStart:
|
|
AC_LOGV("Before eTouchStart, state: %s", mState->Name());
|
|
rv = mState->OnPress(this, point, id, eTouchEventClass);
|
|
AC_LOGV("After eTouchStart, state: %s, consume: %d", mState->Name(), rv);
|
|
break;
|
|
|
|
case eTouchMove:
|
|
AC_LOGV("Before eTouchMove, state: %s", mState->Name());
|
|
rv = mState->OnMove(this, point);
|
|
AC_LOGV("After eTouchMove, state: %s, consume: %d", mState->Name(), rv);
|
|
break;
|
|
|
|
case eTouchEnd:
|
|
AC_LOGV("Before eTouchEnd, state: %s", mState->Name());
|
|
rv = mState->OnRelease(this);
|
|
AC_LOGV("After eTouchEnd, state: %s, consume: %d", mState->Name(), rv);
|
|
break;
|
|
|
|
case eTouchCancel:
|
|
AC_LOGV("Got eTouchCancel, state: %s", mState->Name());
|
|
// Do nothing since we don't really care eTouchCancel anyway.
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsEventStatus
|
|
AccessibleCaretEventHub::HandleKeyboardEvent(WidgetKeyboardEvent* aEvent)
|
|
{
|
|
mManager->SetLastInputSource(MouseEventBinding::MOZ_SOURCE_KEYBOARD);
|
|
|
|
switch (aEvent->mMessage) {
|
|
case eKeyUp:
|
|
AC_LOGV("eKeyUp, state: %s", mState->Name());
|
|
mManager->OnKeyboardEvent();
|
|
break;
|
|
|
|
case eKeyDown:
|
|
AC_LOGV("eKeyDown, state: %s", mState->Name());
|
|
mManager->OnKeyboardEvent();
|
|
break;
|
|
|
|
case eKeyPress:
|
|
AC_LOGV("eKeyPress, state: %s", mState->Name());
|
|
mManager->OnKeyboardEvent();
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return nsEventStatus_eIgnore;
|
|
}
|
|
|
|
bool
|
|
AccessibleCaretEventHub::MoveDistanceIsLarge(const nsPoint& aPoint) const
|
|
{
|
|
nsPoint delta = aPoint - mPressPoint;
|
|
return NS_hypot(delta.x, delta.y) >
|
|
nsPresContext::AppUnitsPerCSSPixel() * kMoveStartToleranceInPixel;
|
|
}
|
|
|
|
void
|
|
AccessibleCaretEventHub::LaunchLongTapInjector()
|
|
{
|
|
if (!mLongTapInjectorTimer) {
|
|
return;
|
|
}
|
|
|
|
int32_t longTapDelay = gfxPrefs::UiClickHoldContextMenusDelay();
|
|
mLongTapInjectorTimer->InitWithNamedFuncCallback(
|
|
FireLongTap,
|
|
this,
|
|
longTapDelay,
|
|
nsITimer::TYPE_ONE_SHOT,
|
|
"AccessibleCaretEventHub::LaunchLongTapInjector");
|
|
}
|
|
|
|
void
|
|
AccessibleCaretEventHub::CancelLongTapInjector()
|
|
{
|
|
if (!mLongTapInjectorTimer) {
|
|
return;
|
|
}
|
|
|
|
mLongTapInjectorTimer->Cancel();
|
|
}
|
|
|
|
/* static */ void
|
|
AccessibleCaretEventHub::FireLongTap(nsITimer* aTimer,
|
|
void* aAccessibleCaretEventHub)
|
|
{
|
|
RefPtr<AccessibleCaretEventHub> self =
|
|
static_cast<AccessibleCaretEventHub*>(aAccessibleCaretEventHub);
|
|
self->mState->OnLongTap(self, self->mPressPoint);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
AccessibleCaretEventHub::Reflow(DOMHighResTimeStamp aStart,
|
|
DOMHighResTimeStamp aEnd)
|
|
{
|
|
if (!mInitialized) {
|
|
return NS_OK;
|
|
}
|
|
|
|
MOZ_ASSERT(mRefCnt.get() > 1, "Expect caller holds us as well!");
|
|
|
|
if (mIsInReflowCallback) {
|
|
return NS_OK;
|
|
}
|
|
|
|
AutoRestore<bool> autoRestoreIsInReflowCallback(mIsInReflowCallback);
|
|
mIsInReflowCallback = true;
|
|
|
|
AC_LOG("%s, state: %s", __FUNCTION__, mState->Name());
|
|
mState->OnReflow(this);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
AccessibleCaretEventHub::ReflowInterruptible(DOMHighResTimeStamp aStart,
|
|
DOMHighResTimeStamp aEnd)
|
|
{
|
|
// Defer the error checking to Reflow().
|
|
return Reflow(aStart, aEnd);
|
|
}
|
|
|
|
void
|
|
AccessibleCaretEventHub::AsyncPanZoomStarted()
|
|
{
|
|
if (!mInitialized) {
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(mRefCnt.get() > 1, "Expect caller holds us as well!");
|
|
|
|
AC_LOG("%s, state: %s", __FUNCTION__, mState->Name());
|
|
mState->OnScrollStart(this);
|
|
}
|
|
|
|
void
|
|
AccessibleCaretEventHub::AsyncPanZoomStopped()
|
|
{
|
|
if (!mInitialized) {
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(mRefCnt.get() > 1, "Expect caller holds us as well!");
|
|
|
|
AC_LOG("%s, state: %s", __FUNCTION__, mState->Name());
|
|
mState->OnScrollEnd(this);
|
|
}
|
|
|
|
void
|
|
AccessibleCaretEventHub::ScrollPositionChanged()
|
|
{
|
|
if (!mInitialized) {
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(mRefCnt.get() > 1, "Expect caller holds us as well!");
|
|
|
|
AC_LOG("%s, state: %s", __FUNCTION__, mState->Name());
|
|
mState->OnScrollPositionChanged(this);
|
|
}
|
|
|
|
nsresult
|
|
AccessibleCaretEventHub::NotifySelectionChanged(nsIDOMDocument* aDoc,
|
|
nsISelection* aSel,
|
|
int16_t aReason)
|
|
{
|
|
if (!mInitialized) {
|
|
return NS_OK;
|
|
}
|
|
|
|
MOZ_ASSERT(mRefCnt.get() > 1, "Expect caller holds us as well!");
|
|
|
|
AC_LOG("%s, state: %s, reason: %d", __FUNCTION__, mState->Name(), aReason);
|
|
mState->OnSelectionChanged(this, aDoc, aSel, aReason);
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
AccessibleCaretEventHub::NotifyBlur(bool aIsLeavingDocument)
|
|
{
|
|
if (!mInitialized) {
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(mRefCnt.get() > 1, "Expect caller holds us as well!");
|
|
|
|
AC_LOG("%s, state: %s", __FUNCTION__, mState->Name());
|
|
mState->OnBlur(this, aIsLeavingDocument);
|
|
}
|
|
|
|
nsPoint
|
|
AccessibleCaretEventHub::GetTouchEventPosition(WidgetTouchEvent* aEvent,
|
|
int32_t aIdentifier) const
|
|
{
|
|
for (dom::Touch* touch : aEvent->mTouches) {
|
|
if (touch->Identifier() == aIdentifier) {
|
|
LayoutDeviceIntPoint touchIntPoint = touch->mRefPoint;
|
|
|
|
// Get event coordinate relative to root frame.
|
|
nsIFrame* rootFrame = mPresShell->GetRootFrame();
|
|
return nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, touchIntPoint,
|
|
rootFrame);
|
|
}
|
|
}
|
|
return nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE);
|
|
}
|
|
|
|
nsPoint
|
|
AccessibleCaretEventHub::GetMouseEventPosition(WidgetMouseEvent* aEvent) const
|
|
{
|
|
LayoutDeviceIntPoint mouseIntPoint = aEvent->AsGUIEvent()->mRefPoint;
|
|
|
|
// Get event coordinate relative to root frame.
|
|
nsIFrame* rootFrame = mPresShell->GetRootFrame();
|
|
return nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, mouseIntPoint,
|
|
rootFrame);
|
|
}
|
|
|
|
} // namespace mozilla
|