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gecko-dev/embedding/browser/nsDocShellTreeOwner.cpp
Ryan VanderMeulen ec8d7510c3 Backed out 7 changesets (bug 1075670) for e10s browser_586068-browser_state_interrupted.js crashes. 
Backed out changeset 4ca74b217fe8 (bug 1075670)
Backed out changeset 83199cfc333f (bug 1075670)
Backed out changeset 065b859e6525 (bug 1075670)
Backed out changeset a3e8329610d9 (bug 1075670)
Backed out changeset ced9055e0bcc (bug 1075670)
Backed out changeset e6d6f0c11133 (bug 1075670)
Backed out changeset b823c6c95030 (bug 1075670)

CLOSED TREE
2015-02-24 11:53:34 -05:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// Local Includes
#include "nsDocShellTreeOwner.h"
#include "nsWebBrowser.h"
// Helper Classes
#include "nsStyleCoord.h"
#include "nsSize.h"
#include "nsHTMLReflowState.h"
#include "nsIServiceManager.h"
#include "nsComponentManagerUtils.h"
#include "nsXPIDLString.h"
#include "nsIAtom.h"
#include "nsReadableUtils.h"
#include "nsUnicharUtils.h"
#include "nsISimpleEnumerator.h"
#include "mozilla/LookAndFeel.h"
// Interfaces needed to be included
#include "nsPresContext.h"
#include "nsIContextMenuListener.h"
#include "nsIContextMenuListener2.h"
#include "nsITooltipListener.h"
#include "nsIDOMNode.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMDocument.h"
#include "nsIDOMDocumentType.h"
#include "nsIDOMElement.h"
#include "Link.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/SVGTitleElement.h"
#include "nsIDOMEvent.h"
#include "nsIDOMMouseEvent.h"
#include "nsIFormControl.h"
#include "nsIDOMHTMLInputElement.h"
#include "nsIDOMHTMLTextAreaElement.h"
#include "nsIDOMHTMLHtmlElement.h"
#include "nsIDOMHTMLAppletElement.h"
#include "nsIDOMHTMLObjectElement.h"
#include "nsIDOMHTMLEmbedElement.h"
#include "nsIDOMHTMLDocument.h"
#include "nsIImageLoadingContent.h"
#include "nsIWebNavigation.h"
#include "nsIDOMHTMLElement.h"
#include "nsIPresShell.h"
#include "nsPIDOMWindow.h"
#include "nsPIWindowRoot.h"
#include "nsIDOMWindowCollection.h"
#include "nsIWindowWatcher.h"
#include "nsPIWindowWatcher.h"
#include "nsIPrompt.h"
#include "nsRect.h"
#include "nsIWebBrowserChromeFocus.h"
#include "nsIContent.h"
#include "imgIContainer.h"
#include "nsContextMenuInfo.h"
#include "nsPresContext.h"
#include "nsViewManager.h"
#include "nsView.h"
#include "nsIDOMDragEvent.h"
#include "nsIConstraintValidation.h"
#include "mozilla/Attributes.h"
#include "mozilla/EventListenerManager.h"
#include "mozilla/dom/Event.h" // for nsIDOMEvent::InternalDOMEvent()
using namespace mozilla;
using namespace mozilla::dom;
//
// GetEventReceiver
//
// A helper routine that navigates the tricky path from a |nsWebBrowser| to
// a |EventTarget| via the window root and chrome event handler.
//
static nsresult
GetDOMEventTarget(nsWebBrowser* inBrowser, EventTarget** aTarget)
{
NS_ENSURE_ARG_POINTER(inBrowser);
nsCOMPtr<nsIDOMWindow> domWindow;
inBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
NS_ENSURE_TRUE(domWindow, NS_ERROR_FAILURE);
nsCOMPtr<nsPIDOMWindow> domWindowPrivate = do_QueryInterface(domWindow);
NS_ENSURE_TRUE(domWindowPrivate, NS_ERROR_FAILURE);
nsPIDOMWindow *rootWindow = domWindowPrivate->GetPrivateRoot();
NS_ENSURE_TRUE(rootWindow, NS_ERROR_FAILURE);
nsCOMPtr<EventTarget> target =
rootWindow->GetChromeEventHandler();
NS_ENSURE_TRUE(target, NS_ERROR_FAILURE);
target.forget(aTarget);
return NS_OK;
}
//*****************************************************************************
//*** nsDocShellTreeOwner: Object Management
//*****************************************************************************
nsDocShellTreeOwner::nsDocShellTreeOwner() :
mWebBrowser(nullptr),
mTreeOwner(nullptr),
mPrimaryContentShell(nullptr),
mWebBrowserChrome(nullptr),
mOwnerWin(nullptr),
mOwnerRequestor(nullptr)
{
}
nsDocShellTreeOwner::~nsDocShellTreeOwner()
{
RemoveChromeListeners();
}
//*****************************************************************************
// nsDocShellTreeOwner::nsISupports
//*****************************************************************************
NS_IMPL_ADDREF(nsDocShellTreeOwner)
NS_IMPL_RELEASE(nsDocShellTreeOwner)
NS_INTERFACE_MAP_BEGIN(nsDocShellTreeOwner)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDocShellTreeOwner)
NS_INTERFACE_MAP_ENTRY(nsIDocShellTreeOwner)
NS_INTERFACE_MAP_ENTRY(nsIBaseWindow)
NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
NS_INTERFACE_MAP_ENTRY(nsIWebProgressListener)
NS_INTERFACE_MAP_ENTRY(nsIDOMEventListener)
NS_INTERFACE_MAP_ENTRY(nsICDocShellTreeOwner)
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_END
//*****************************************************************************
// nsDocShellTreeOwner::nsIInterfaceRequestor
//*****************************************************************************
NS_IMETHODIMP
nsDocShellTreeOwner::GetInterface(const nsIID& aIID, void** aSink)
{
NS_ENSURE_ARG_POINTER(aSink);
if (NS_SUCCEEDED(QueryInterface(aIID, aSink)))
return NS_OK;
if (aIID.Equals(NS_GET_IID(nsIWebBrowserChromeFocus))) {
if (mWebBrowserChromeWeak != nullptr)
return mWebBrowserChromeWeak->QueryReferent(aIID, aSink);
return mOwnerWin->QueryInterface(aIID, aSink);
}
if (aIID.Equals(NS_GET_IID(nsIPrompt))) {
nsCOMPtr<nsIPrompt> prompt;
EnsurePrompter();
prompt = mPrompter;
if (prompt) {
prompt.forget(aSink);
return NS_OK;
}
return NS_NOINTERFACE;
}
if (aIID.Equals(NS_GET_IID(nsIAuthPrompt))) {
nsCOMPtr<nsIAuthPrompt> prompt;
EnsureAuthPrompter();
prompt = mAuthPrompter;
if (prompt) {
prompt.forget(aSink);
return NS_OK;
}
return NS_NOINTERFACE;
}
nsCOMPtr<nsIInterfaceRequestor> req = GetOwnerRequestor();
if (req)
return req->GetInterface(aIID, aSink);
return NS_NOINTERFACE;
}
//*****************************************************************************
// nsDocShellTreeOwner::nsIDocShellTreeOwner
//*****************************************************************************
NS_IMETHODIMP
nsDocShellTreeOwner::FindItemWithName(const char16_t* aName,
nsIDocShellTreeItem* aRequestor,
nsIDocShellTreeItem* aOriginalRequestor,
nsIDocShellTreeItem** aFoundItem)
{
NS_ENSURE_ARG(aName);
NS_ENSURE_ARG_POINTER(aFoundItem);
*aFoundItem = nullptr; // if we don't find one, we return NS_OK and a null result
nsresult rv;
nsAutoString name(aName);
if (!mWebBrowser)
return NS_OK; // stymied
/* special cases */
if (name.IsEmpty())
return NS_OK;
if (name.LowerCaseEqualsLiteral("_blank"))
return NS_OK;
// _main is an IE target which should be case-insensitive but isn't
// see bug 217886 for details
// XXXbz what if our browser isn't targetable? We need to handle that somehow.
if (name.LowerCaseEqualsLiteral("_content") || name.EqualsLiteral("_main")) {
nsCOMPtr<nsIDocShell> foundItem = mWebBrowser->mDocShell;
foundItem.forget(aFoundItem);
return NS_OK;
}
if (!SameCOMIdentity(aRequestor, mWebBrowser->mDocShell)) {
// This isn't a request coming up from our kid, so check with said kid
nsISupports* thisSupports = static_cast<nsIDocShellTreeOwner*>(this);
rv = mWebBrowser->mDocShell->FindItemWithName(aName, thisSupports,
aOriginalRequestor, aFoundItem);
if (NS_FAILED(rv) || *aFoundItem) {
return rv;
}
}
// next, if we have a parent and it isn't the requestor, ask it
if (mTreeOwner) {
nsCOMPtr<nsIDocShellTreeOwner> reqAsTreeOwner(do_QueryInterface(aRequestor));
if (mTreeOwner != reqAsTreeOwner)
return mTreeOwner->FindItemWithName(aName, mWebBrowser->mDocShell,
aOriginalRequestor, aFoundItem);
return NS_OK;
}
// finally, failing everything else, search all windows
return FindItemWithNameAcrossWindows(aName, aRequestor, aOriginalRequestor,
aFoundItem);
}
nsresult
nsDocShellTreeOwner::FindItemWithNameAcrossWindows(const char16_t* aName,
nsIDocShellTreeItem* aRequestor,
nsIDocShellTreeItem* aOriginalRequestor,
nsIDocShellTreeItem** aFoundItem)
{
// search for the item across the list of top-level windows
nsCOMPtr<nsPIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (!wwatch)
return NS_OK;
return wwatch->FindItemWithName(aName, aRequestor, aOriginalRequestor,
aFoundItem);
}
void
nsDocShellTreeOwner::EnsurePrompter()
{
if (mPrompter)
return;
nsCOMPtr<nsIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (wwatch && mWebBrowser) {
nsCOMPtr<nsIDOMWindow> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow)
wwatch->GetNewPrompter(domWindow, getter_AddRefs(mPrompter));
}
}
void
nsDocShellTreeOwner::EnsureAuthPrompter()
{
if (mAuthPrompter)
return;
nsCOMPtr<nsIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (wwatch && mWebBrowser) {
nsCOMPtr<nsIDOMWindow> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow)
wwatch->GetNewAuthPrompter(domWindow, getter_AddRefs(mAuthPrompter));
}
}
void
nsDocShellTreeOwner::AddToWatcher()
{
if (mWebBrowser) {
nsCOMPtr<nsIDOMWindow> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow) {
nsCOMPtr<nsPIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (wwatch) {
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
if (webBrowserChrome)
wwatch->AddWindow(domWindow, webBrowserChrome);
}
}
}
}
void
nsDocShellTreeOwner::RemoveFromWatcher()
{
if (mWebBrowser) {
nsCOMPtr<nsIDOMWindow> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow) {
nsCOMPtr<nsPIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (wwatch)
wwatch->RemoveWindow(domWindow);
}
}
}
NS_IMETHODIMP
nsDocShellTreeOwner::ContentShellAdded(nsIDocShellTreeItem* aContentShell,
bool aPrimary, bool aTargetable,
const nsAString& aID)
{
if (mTreeOwner)
return mTreeOwner->ContentShellAdded(aContentShell, aPrimary,
aTargetable, aID);
if (aPrimary)
mPrimaryContentShell = aContentShell;
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::ContentShellRemoved(nsIDocShellTreeItem* aContentShell)
{
if (mTreeOwner)
return mTreeOwner->ContentShellRemoved(aContentShell);
if (mPrimaryContentShell == aContentShell)
mPrimaryContentShell = nullptr;
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPrimaryContentShell(nsIDocShellTreeItem** aShell)
{
NS_ENSURE_ARG_POINTER(aShell);
if (mTreeOwner)
return mTreeOwner->GetPrimaryContentShell(aShell);
nsCOMPtr<nsIDocShellTreeItem> shell;
shell = (mPrimaryContentShell ? mPrimaryContentShell : mWebBrowser->mDocShell);
shell.forget(aShell);
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SizeShellTo(nsIDocShellTreeItem* aShellItem,
int32_t aCX, int32_t aCY)
{
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
NS_ENSURE_STATE(mTreeOwner || webBrowserChrome);
if (mTreeOwner)
return mTreeOwner->SizeShellTo(aShellItem, aCX, aCY);
if (aShellItem == mWebBrowser->mDocShell)
return webBrowserChrome->SizeBrowserTo(aCX, aCY);
nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(aShellItem));
NS_ENSURE_TRUE(webNav, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMDocument> domDocument;
webNav->GetDocument(getter_AddRefs(domDocument));
NS_ENSURE_TRUE(domDocument, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMElement> domElement;
domDocument->GetDocumentElement(getter_AddRefs(domElement));
NS_ENSURE_TRUE(domElement, NS_ERROR_FAILURE);
// Set the preferred Size
//XXX
NS_ERROR("Implement this");
/*
Set the preferred size on the aShellItem.
*/
nsRefPtr<nsPresContext> presContext;
mWebBrowser->mDocShell->GetPresContext(getter_AddRefs(presContext));
NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);
nsIPresShell *presShell = presContext->GetPresShell();
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(presShell->ResizeReflow(NS_UNCONSTRAINEDSIZE,
NS_UNCONSTRAINEDSIZE), NS_ERROR_FAILURE);
nsRect shellArea = presContext->GetVisibleArea();
int32_t browserCX = presContext->AppUnitsToDevPixels(shellArea.width);
int32_t browserCY = presContext->AppUnitsToDevPixels(shellArea.height);
return webBrowserChrome->SizeBrowserTo(browserCX, browserCY);
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetPersistence(bool aPersistPosition,
bool aPersistSize,
bool aPersistSizeMode)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPersistence(bool* aPersistPosition,
bool* aPersistSize,
bool* aPersistSizeMode)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetTargetableShellCount(uint32_t* aResult)
{
if (mTreeOwner) {
mTreeOwner->GetTargetableShellCount(aResult);
} else {
*aResult = 0;
}
return NS_OK;
}
//*****************************************************************************
// nsDocShellTreeOwner::nsIBaseWindow
//*****************************************************************************
NS_IMETHODIMP
nsDocShellTreeOwner::InitWindow(nativeWindow aParentNativeWindow,
nsIWidget* aParentWidget, int32_t aX,
int32_t aY, int32_t aCX, int32_t aCY)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::Create()
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::Destroy()
{
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
if (webBrowserChrome)
{
return webBrowserChrome->DestroyBrowserWindow();
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetUnscaledDevicePixelsPerCSSPixel(double *aScale)
{
if (mWebBrowser) {
return mWebBrowser->GetUnscaledDevicePixelsPerCSSPixel(aScale);
}
*aScale = 1.0;
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetPosition(int32_t aX, int32_t aY)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->SetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, 0, 0);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPosition(int32_t* aX, int32_t* aY)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->GetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, nullptr, nullptr);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetSize(int32_t aCX, int32_t aCY, bool aRepaint)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->SetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER,
0, 0, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetSize(int32_t* aCX, int32_t* aCY)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->GetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER,
nullptr, nullptr, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetPositionAndSize(int32_t aX, int32_t aY, int32_t aCX,
int32_t aCY, bool aRepaint)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->SetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER |
nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPositionAndSize(int32_t* aX, int32_t* aY, int32_t* aCX,
int32_t* aCY)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->GetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER |
nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::Repaint(bool aForce)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetParentWidget(nsIWidget** aParentWidget)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetParentWidget(nsIWidget* aParentWidget)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetParentNativeWindow(nativeWindow* aParentNativeWindow)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->GetSiteWindow(aParentNativeWindow);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetParentNativeWindow(nativeWindow aParentNativeWindow)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetNativeHandle(nsAString& aNativeHandle)
{
// the nativeHandle should be accessed from nsIXULWindow
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetVisibility(bool* aVisibility)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->GetVisibility(aVisibility);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetVisibility(bool aVisibility)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->SetVisibility(aVisibility);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetEnabled(bool *aEnabled)
{
NS_ENSURE_ARG_POINTER(aEnabled);
*aEnabled = true;
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetEnabled(bool aEnabled)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetMainWidget(nsIWidget** aMainWidget)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetFocus()
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->SetFocus();
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetTitle(char16_t** aTitle)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->GetTitle(aTitle);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetTitle(const char16_t* aTitle)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->SetTitle(aTitle);
}
return NS_ERROR_NULL_POINTER;
}
//*****************************************************************************
// nsDocShellTreeOwner::nsIWebProgressListener
//*****************************************************************************
NS_IMETHODIMP
nsDocShellTreeOwner::OnProgressChange(nsIWebProgress* aProgress,
nsIRequest* aRequest,
int32_t aCurSelfProgress,
int32_t aMaxSelfProgress,
int32_t aCurTotalProgress,
int32_t aMaxTotalProgress)
{
// In the absence of DOM document creation event, this method is the
// most convenient place to install the mouse listener on the
// DOM document.
return AddChromeListeners();
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnStateChange(nsIWebProgress* aProgress,
nsIRequest* aRequest,
uint32_t aProgressStateFlags,
nsresult aStatus)
{
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnLocationChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsIURI* aURI,
uint32_t aFlags)
{
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnStatusChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsresult aStatus,
const char16_t* aMessage)
{
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnSecurityChange(nsIWebProgress *aWebProgress,
nsIRequest *aRequest,
uint32_t state)
{
return NS_OK;
}
//*****************************************************************************
// nsDocShellTreeOwner: Helpers
//*****************************************************************************
//*****************************************************************************
// nsDocShellTreeOwner: Accessors
//*****************************************************************************
void
nsDocShellTreeOwner::WebBrowser(nsWebBrowser* aWebBrowser)
{
if (!aWebBrowser)
RemoveChromeListeners();
if (aWebBrowser != mWebBrowser) {
mPrompter = nullptr;
mAuthPrompter = nullptr;
}
mWebBrowser = aWebBrowser;
}
nsWebBrowser *
nsDocShellTreeOwner::WebBrowser()
{
return mWebBrowser;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetTreeOwner(nsIDocShellTreeOwner* aTreeOwner)
{
if (aTreeOwner) {
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome(do_GetInterface(aTreeOwner));
NS_ENSURE_TRUE(webBrowserChrome, NS_ERROR_INVALID_ARG);
NS_ENSURE_SUCCESS(SetWebBrowserChrome(webBrowserChrome), NS_ERROR_INVALID_ARG);
mTreeOwner = aTreeOwner;
} else {
mTreeOwner = nullptr;
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
if (!webBrowserChrome)
NS_ENSURE_SUCCESS(SetWebBrowserChrome(nullptr), NS_ERROR_FAILURE);
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetWebBrowserChrome(nsIWebBrowserChrome* aWebBrowserChrome)
{
if (!aWebBrowserChrome) {
mWebBrowserChrome = nullptr;
mOwnerWin = nullptr;
mOwnerRequestor = nullptr;
mWebBrowserChromeWeak = nullptr;
} else {
nsCOMPtr<nsISupportsWeakReference> supportsweak =
do_QueryInterface(aWebBrowserChrome);
if (supportsweak) {
supportsweak->GetWeakReference(getter_AddRefs(mWebBrowserChromeWeak));
} else {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin(do_QueryInterface(aWebBrowserChrome));
nsCOMPtr<nsIInterfaceRequestor> requestor(do_QueryInterface(aWebBrowserChrome));
// it's ok for ownerWin or requestor to be null.
mWebBrowserChrome = aWebBrowserChrome;
mOwnerWin = ownerWin;
mOwnerRequestor = requestor;
}
}
return NS_OK;
}
//
// AddChromeListeners
//
// Hook up things to the chrome like context menus and tooltips, if the chrome
// has implemented the right interfaces.
//
NS_IMETHODIMP
nsDocShellTreeOwner::AddChromeListeners()
{
nsresult rv = NS_OK;
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
if (!webBrowserChrome)
return NS_ERROR_FAILURE;
// install tooltips
if (!mChromeTooltipListener) {
nsCOMPtr<nsITooltipListener>
tooltipListener(do_QueryInterface(webBrowserChrome));
if (tooltipListener) {
mChromeTooltipListener = new ChromeTooltipListener(mWebBrowser,
webBrowserChrome);
rv = mChromeTooltipListener->AddChromeListeners();
}
}
// install context menus
if (!mChromeContextMenuListener) {
nsCOMPtr<nsIContextMenuListener2>
contextListener2(do_QueryInterface(webBrowserChrome));
nsCOMPtr<nsIContextMenuListener>
contextListener(do_QueryInterface(webBrowserChrome));
if (contextListener2 || contextListener) {
mChromeContextMenuListener =
new ChromeContextMenuListener(mWebBrowser, webBrowserChrome);
rv = mChromeContextMenuListener->AddChromeListeners();
}
}
// register dragover and drop event listeners with the listener manager
nsCOMPtr<EventTarget> target;
GetDOMEventTarget(mWebBrowser, getter_AddRefs(target));
EventListenerManager* elmP = target->GetOrCreateListenerManager();
if (elmP) {
elmP->AddEventListenerByType(this, NS_LITERAL_STRING("dragover"),
TrustedEventsAtSystemGroupBubble());
elmP->AddEventListenerByType(this, NS_LITERAL_STRING("drop"),
TrustedEventsAtSystemGroupBubble());
}
return rv;
} // AddChromeListeners
NS_IMETHODIMP
nsDocShellTreeOwner::RemoveChromeListeners()
{
if (mChromeTooltipListener) {
mChromeTooltipListener->RemoveChromeListeners();
mChromeTooltipListener = nullptr;
}
if (mChromeContextMenuListener) {
mChromeContextMenuListener->RemoveChromeListeners();
mChromeContextMenuListener = nullptr;
}
nsCOMPtr<EventTarget> piTarget;
GetDOMEventTarget(mWebBrowser, getter_AddRefs(piTarget));
if (!piTarget)
return NS_OK;
EventListenerManager* elmP = piTarget->GetOrCreateListenerManager();
if (elmP)
{
elmP->RemoveEventListenerByType(this, NS_LITERAL_STRING("dragover"),
TrustedEventsAtSystemGroupBubble());
elmP->RemoveEventListenerByType(this, NS_LITERAL_STRING("drop"),
TrustedEventsAtSystemGroupBubble());
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::HandleEvent(nsIDOMEvent* aEvent)
{
nsCOMPtr<nsIDOMDragEvent> dragEvent = do_QueryInterface(aEvent);
NS_ENSURE_TRUE(dragEvent, NS_ERROR_INVALID_ARG);
bool defaultPrevented;
aEvent->GetDefaultPrevented(&defaultPrevented);
if (defaultPrevented) {
return NS_OK;
}
nsCOMPtr<nsIDroppedLinkHandler> handler = do_GetService("@mozilla.org/content/dropped-link-handler;1");
if (handler) {
nsAutoString eventType;
aEvent->GetType(eventType);
if (eventType.EqualsLiteral("dragover")) {
bool canDropLink;
handler->CanDropLink(dragEvent, false, &canDropLink);
if (canDropLink)
aEvent->PreventDefault();
}
else if (eventType.EqualsLiteral("drop")) {
nsIWebNavigation* webnav = static_cast<nsIWebNavigation *>(mWebBrowser);
nsAutoString link, name;
if (webnav && NS_SUCCEEDED(handler->DropLink(dragEvent, link, false, name))) {
if (!link.IsEmpty()) {
webnav->LoadURI(link.get(), 0, nullptr, nullptr, nullptr);
}
} else {
aEvent->StopPropagation();
aEvent->PreventDefault();
}
}
}
return NS_OK;
}
already_AddRefed<nsIWebBrowserChrome>
nsDocShellTreeOwner::GetWebBrowserChrome()
{
nsCOMPtr<nsIWebBrowserChrome> chrome;
if (mWebBrowserChromeWeak) {
chrome = do_QueryReferent(mWebBrowserChromeWeak);
} else if (mWebBrowserChrome) {
chrome = mWebBrowserChrome;
}
return chrome.forget();
}
already_AddRefed<nsIEmbeddingSiteWindow>
nsDocShellTreeOwner::GetOwnerWin()
{
nsCOMPtr<nsIEmbeddingSiteWindow> win;
if (mWebBrowserChromeWeak) {
win = do_QueryReferent(mWebBrowserChromeWeak);
} else if (mOwnerWin) {
win = mOwnerWin;
}
return win.forget();
}
already_AddRefed<nsIInterfaceRequestor>
nsDocShellTreeOwner::GetOwnerRequestor()
{
nsCOMPtr<nsIInterfaceRequestor> req;
if (mWebBrowserChromeWeak) {
req = do_QueryReferent(mWebBrowserChromeWeak);
} else if (mOwnerRequestor) {
req = mOwnerRequestor;
}
return req.forget();
}
///////////////////////////////////////////////////////////////////////////////
// DefaultTooltipTextProvider
class DefaultTooltipTextProvider MOZ_FINAL : public nsITooltipTextProvider
{
public:
DefaultTooltipTextProvider();
NS_DECL_ISUPPORTS
NS_DECL_NSITOOLTIPTEXTPROVIDER
protected:
~DefaultTooltipTextProvider() {}
nsCOMPtr<nsIAtom> mTag_dialog;
nsCOMPtr<nsIAtom> mTag_dialogheader;
nsCOMPtr<nsIAtom> mTag_window;
};
NS_IMPL_ISUPPORTS(DefaultTooltipTextProvider, nsITooltipTextProvider)
DefaultTooltipTextProvider::DefaultTooltipTextProvider()
{
// There are certain element types which we don't want to use
// as tool tip text.
mTag_dialog = do_GetAtom("dialog");
mTag_dialogheader = do_GetAtom("dialogheader");
mTag_window = do_GetAtom("window");
}
//
// UseSVGTitle
//
// A helper routine that determines whether we're still interested
// in SVG titles. We need to stop at the SVG root element that
// has a document node parent
//
static bool
UseSVGTitle(nsIDOMElement *currElement)
{
nsCOMPtr<dom::Element> element(do_QueryInterface(currElement));
if (!element || !element->IsSVG() || !element->GetParentNode())
return false;
return element->GetParentNode()->NodeType() != nsIDOMNode::DOCUMENT_NODE;
}
/* void getNodeText(in nsIDOMNode aNode, out wstring aText); */
NS_IMETHODIMP
DefaultTooltipTextProvider::GetNodeText(nsIDOMNode *aNode, char16_t **aText,
bool *_retval)
{
NS_ENSURE_ARG_POINTER(aNode);
NS_ENSURE_ARG_POINTER(aText);
nsString outText;
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
bool lookingForSVGTitle = true;
bool found = false;
nsCOMPtr<nsIDOMNode> current(aNode);
// If the element implement the constraint validation API and has no title,
// show the validation message, if any.
nsCOMPtr<nsIConstraintValidation> cvElement = do_QueryInterface(current);
if (cvElement) {
nsCOMPtr<nsIContent> content = do_QueryInterface(cvElement);
nsCOMPtr<nsIAtom> titleAtom = do_GetAtom("title");
nsCOMPtr<nsIFormControl> formControl = do_QueryInterface(content);
bool formHasNoValidate = false;
mozilla::dom::Element* form = formControl->GetFormElement();
if (form) {
nsCOMPtr<nsIAtom> noValidateAtom = do_GetAtom("novalidate");
formHasNoValidate = form->HasAttr(kNameSpaceID_None, noValidateAtom);
}
if (!content->HasAttr(kNameSpaceID_None, titleAtom) &&
!formHasNoValidate) {
cvElement->GetValidationMessage(outText);
found = !outText.IsEmpty();
}
}
while (!found && current) {
nsCOMPtr<nsIDOMElement> currElement(do_QueryInterface(current));
if (currElement) {
nsCOMPtr<nsIContent> content(do_QueryInterface(currElement));
if (content) {
nsIAtom *tagAtom = content->Tag();
if (tagAtom != mTag_dialog &&
tagAtom != mTag_dialogheader &&
tagAtom != mTag_window) {
// first try the normal title attribute...
currElement->GetAttribute(NS_LITERAL_STRING("title"), outText);
if (outText.Length()) {
found = true;
} else {
// ...ok, that didn't work, try it in the XLink namespace
NS_NAMED_LITERAL_STRING(xlinkNS, "http://www.w3.org/1999/xlink");
nsCOMPtr<mozilla::dom::Link> linkContent(do_QueryInterface(currElement));
if (linkContent) {
nsCOMPtr<nsIURI> uri(linkContent->GetURIExternal());
if (uri) {
currElement->GetAttributeNS(NS_LITERAL_STRING("http://www.w3.org/1999/xlink"), NS_LITERAL_STRING("title"), outText);
if (outText.Length())
found = true;
}
} else {
if (lookingForSVGTitle) {
lookingForSVGTitle = UseSVGTitle(currElement);
}
if (lookingForSVGTitle) {
nsINodeList* childNodes = node->ChildNodes();
uint32_t childNodeCount = childNodes->Length();
for (uint32_t i = 0; i < childNodeCount; i++) {
nsIContent* child = childNodes->Item(i);
if (child->IsSVG(nsGkAtoms::title)) {
static_cast<dom::SVGTitleElement*>(child)->GetTextContent(outText);
if (outText.Length())
found = true;
break;
}
}
}
}
}
}
}
}
// not found here, walk up to the parent and keep trying
if (!found) {
nsCOMPtr<nsIDOMNode> temp(current);
temp->GetParentNode(getter_AddRefs(current));
}
} // while not found
*_retval = found;
*aText = (found) ? ToNewUnicode(outText) : nullptr;
return NS_OK;
}
///////////////////////////////////////////////////////////////////////////////
NS_IMPL_ISUPPORTS(ChromeTooltipListener, nsIDOMEventListener)
//
// ChromeTooltipListener ctor
//
ChromeTooltipListener::ChromeTooltipListener(nsWebBrowser* inBrowser,
nsIWebBrowserChrome* inChrome)
: mWebBrowser(inBrowser), mWebBrowserChrome(inChrome),
mTooltipListenerInstalled(false),
mMouseClientX(0), mMouseClientY(0),
mShowingTooltip(false), mTooltipShownOnce(false)
{
mTooltipTextProvider = do_GetService(NS_TOOLTIPTEXTPROVIDER_CONTRACTID);
if (!mTooltipTextProvider) {
mTooltipTextProvider = new DefaultTooltipTextProvider();
}
} // ctor
//
// ChromeTooltipListener dtor
//
ChromeTooltipListener::~ChromeTooltipListener()
{
} // dtor
//
// AddChromeListeners
//
// Hook up things to the chrome like context menus and tooltips, if the chrome
// has implemented the right interfaces.
//
NS_IMETHODIMP
ChromeTooltipListener::AddChromeListeners()
{
if (!mEventTarget)
GetDOMEventTarget(mWebBrowser, getter_AddRefs(mEventTarget));
// Register the appropriate events for tooltips, but only if
// the embedding chrome cares.
nsresult rv = NS_OK;
nsCOMPtr<nsITooltipListener> tooltipListener(do_QueryInterface(mWebBrowserChrome));
if (tooltipListener && !mTooltipListenerInstalled) {
rv = AddTooltipListener();
if (NS_FAILED(rv))
return rv;
}
return rv;
} // AddChromeListeners
//
// AddTooltipListener
//
// Subscribe to the events that will allow us to track tooltips. We need "mouse" for mouseExit,
// "mouse motion" for mouseMove, and "key" for keyDown. As we add the listeners, keep track
// of how many succeed so we can clean up correctly in Release().
//
NS_IMETHODIMP
ChromeTooltipListener::AddTooltipListener()
{
if (mEventTarget) {
nsresult rv = mEventTarget->AddEventListener(NS_LITERAL_STRING("keydown"),
this, false, false);
NS_ENSURE_SUCCESS(rv, rv);
rv = mEventTarget->AddEventListener(NS_LITERAL_STRING("mousedown"), this,
false, false);
NS_ENSURE_SUCCESS(rv, rv);
rv = mEventTarget->AddEventListener(NS_LITERAL_STRING("mouseout"), this,
false, false);
NS_ENSURE_SUCCESS(rv, rv);
rv = mEventTarget->AddEventListener(NS_LITERAL_STRING("mousemove"), this,
false, false);
NS_ENSURE_SUCCESS(rv, rv);
mTooltipListenerInstalled = true;
}
return NS_OK;
}
//
// RemoveChromeListeners
//
// Unsubscribe from the various things we've hooked up to the window root.
//
NS_IMETHODIMP
ChromeTooltipListener::RemoveChromeListeners()
{
HideTooltip();
if (mTooltipListenerInstalled)
RemoveTooltipListener();
mEventTarget = nullptr;
// it really doesn't matter if these fail...
return NS_OK;
} // RemoveChromeTooltipListeners
//
// RemoveTooltipListener
//
// Unsubscribe from all the various tooltip events that we were listening to
//
NS_IMETHODIMP
ChromeTooltipListener::RemoveTooltipListener()
{
if (mEventTarget) {
nsresult rv =
mEventTarget->RemoveEventListener(NS_LITERAL_STRING("keydown"), this,
false);
NS_ENSURE_SUCCESS(rv, rv);
rv = mEventTarget->RemoveEventListener(NS_LITERAL_STRING("mousedown"),
this, false);
NS_ENSURE_SUCCESS(rv, rv);
rv = mEventTarget->RemoveEventListener(NS_LITERAL_STRING("mouseout"), this,
false);
NS_ENSURE_SUCCESS(rv, rv);
rv = mEventTarget->RemoveEventListener(NS_LITERAL_STRING("mousemove"),
this, false);
NS_ENSURE_SUCCESS(rv, rv);
mTooltipListenerInstalled = false;
}
return NS_OK;
}
NS_IMETHODIMP
ChromeTooltipListener::HandleEvent(nsIDOMEvent* aEvent)
{
nsAutoString eventType;
aEvent->GetType(eventType);
if (eventType.EqualsLiteral("keydown") ||
eventType.EqualsLiteral("mousedown")) {
return HideTooltip();
} else if (eventType.EqualsLiteral("mouseout")) {
// Reset flag so that tooltip will display on the next MouseMove
mTooltipShownOnce = false;
return HideTooltip();
} else if (eventType.EqualsLiteral("mousemove")) {
return MouseMove(aEvent);
}
NS_ERROR("Unexpected event type");
return NS_OK;
}
//
// MouseMove
//
// If we're a tooltip, fire off a timer to see if a tooltip should be shown. If the
// timer fires, we cache the node in |mPossibleTooltipNode|.
//
nsresult
ChromeTooltipListener::MouseMove(nsIDOMEvent* aMouseEvent)
{
nsCOMPtr<nsIDOMMouseEvent> mouseEvent(do_QueryInterface(aMouseEvent));
if (!mouseEvent)
return NS_OK;
// stash the coordinates of the event so that we can still get back to it from within the
// timer callback. On win32, we'll get a MouseMove event even when a popup goes away --
// even when the mouse doesn't change position! To get around this, we make sure the
// mouse has really moved before proceeding.
int32_t newMouseX, newMouseY;
mouseEvent->GetClientX(&newMouseX);
mouseEvent->GetClientY(&newMouseY);
if (mMouseClientX == newMouseX && mMouseClientY == newMouseY)
return NS_OK;
// Filter out minor mouse movements.
if (mShowingTooltip &&
(abs(mMouseClientX - newMouseX) <= kTooltipMouseMoveTolerance) &&
(abs(mMouseClientY - newMouseY) <= kTooltipMouseMoveTolerance))
return NS_OK;
mMouseClientX = newMouseX; mMouseClientY = newMouseY;
mouseEvent->GetScreenX(&mMouseScreenX);
mouseEvent->GetScreenY(&mMouseScreenY);
if (mTooltipTimer) {
mTooltipTimer->Cancel();
}
if (!mShowingTooltip && !mTooltipShownOnce) {
mTooltipTimer = do_CreateInstance("@mozilla.org/timer;1");
if (mTooltipTimer) {
nsCOMPtr<EventTarget> eventTarget = aMouseEvent->InternalDOMEvent()->GetTarget();
if (eventTarget)
mPossibleTooltipNode = do_QueryInterface(eventTarget);
if (mPossibleTooltipNode) {
nsresult rv =
mTooltipTimer->InitWithFuncCallback(sTooltipCallback, this,
LookAndFeel::GetInt(LookAndFeel::eIntID_TooltipDelay, 500),
nsITimer::TYPE_ONE_SHOT);
if (NS_FAILED(rv))
mPossibleTooltipNode = nullptr;
}
}
else {
NS_WARNING("Could not create a timer for tooltip tracking");
}
} else {
mTooltipShownOnce = true;
return HideTooltip();
}
return NS_OK;
} // MouseMove
//
// ShowTooltip
//
// Tell the registered chrome that they should show the tooltip
//
NS_IMETHODIMP
ChromeTooltipListener::ShowTooltip(int32_t inXCoords, int32_t inYCoords,
const nsAString & inTipText)
{
nsresult rv = NS_OK;
// do the work to call the client
nsCOMPtr<nsITooltipListener> tooltipListener(do_QueryInterface(mWebBrowserChrome));
if (tooltipListener) {
rv = tooltipListener->OnShowTooltip(inXCoords, inYCoords, PromiseFlatString(inTipText).get());
if (NS_SUCCEEDED(rv))
mShowingTooltip = true;
}
return rv;
} // ShowTooltip
//
// HideTooltip
//
// Tell the registered chrome that they should rollup the tooltip
// NOTE: This routine is safe to call even if the popup is already closed.
//
NS_IMETHODIMP
ChromeTooltipListener::HideTooltip()
{
nsresult rv = NS_OK;
// shut down the relevant timers
if (mTooltipTimer) {
mTooltipTimer->Cancel();
mTooltipTimer = nullptr;
// release tooltip target
mPossibleTooltipNode = nullptr;
}
// if we're showing the tip, tell the chrome to hide it
if (mShowingTooltip) {
nsCOMPtr<nsITooltipListener> tooltipListener(do_QueryInterface(mWebBrowserChrome));
if (tooltipListener) {
rv = tooltipListener->OnHideTooltip();
if (NS_SUCCEEDED(rv))
mShowingTooltip = false;
}
}
return rv;
} // HideTooltip
//
// sTooltipCallback
//
// A timer callback, fired when the mouse has hovered inside of a frame for the
// appropriate amount of time. Getting to this point means that we should show the
// tooltip, but only after we determine there is an appropriate TITLE element.
//
// This relies on certain things being cached into the |aChromeTooltipListener| object passed to
// us by the timer:
// -- the x/y coordinates of the mouse (mMouseClientY, mMouseClientX)
// -- the dom node the user hovered over (mPossibleTooltipNode)
//
void
ChromeTooltipListener::sTooltipCallback(nsITimer *aTimer,
void *aChromeTooltipListener)
{
ChromeTooltipListener* self = static_cast<ChromeTooltipListener*>
(aChromeTooltipListener);
if (self && self->mPossibleTooltipNode) {
// The actual coordinates we want to put the tooltip at are relative to the
// toplevel docshell of our mWebBrowser. We know what the screen
// coordinates of the mouse event were, which means we just need the screen
// coordinates of the docshell. Unfortunately, there is no good way to
// find those short of groveling for the presentation in that docshell and
// finding the screen coords of its toplevel widget...
nsCOMPtr<nsIDocShell> docShell =
do_GetInterface(static_cast<nsIWebBrowser*>(self->mWebBrowser));
nsCOMPtr<nsIPresShell> shell;
if (docShell) {
shell = docShell->GetPresShell();
}
nsIWidget* widget = nullptr;
if (shell) {
nsViewManager* vm = shell->GetViewManager();
if (vm) {
nsView* view = vm->GetRootView();
if (view) {
nsPoint offset;
widget = view->GetNearestWidget(&offset);
}
}
}
if (!widget) {
// release tooltip target if there is one, NO MATTER WHAT
self->mPossibleTooltipNode = nullptr;
return;
}
// if there is text associated with the node, show the tip and fire
// off a timer to auto-hide it.
nsXPIDLString tooltipText;
if (self->mTooltipTextProvider) {
bool textFound = false;
self->mTooltipTextProvider->GetNodeText(
self->mPossibleTooltipNode, getter_Copies(tooltipText), &textFound);
if (textFound) {
nsString tipText(tooltipText);
LayoutDeviceIntPoint screenDot = widget->WidgetToScreenOffset();
self->ShowTooltip(self->mMouseScreenX - screenDot.x,
self->mMouseScreenY - screenDot.y,
tipText);
}
}
// release tooltip target if there is one, NO MATTER WHAT
self->mPossibleTooltipNode = nullptr;
} // if "self" data valid
} // sTooltipCallback
NS_IMPL_ISUPPORTS(ChromeContextMenuListener, nsIDOMEventListener)
//
// ChromeTooltipListener ctor
//
ChromeContextMenuListener::ChromeContextMenuListener(nsWebBrowser* inBrowser, nsIWebBrowserChrome* inChrome)
: mContextMenuListenerInstalled(false),
mWebBrowser(inBrowser),
mWebBrowserChrome(inChrome)
{
} // ctor
//
// ChromeTooltipListener dtor
//
ChromeContextMenuListener::~ChromeContextMenuListener()
{
} // dtor
//
// AddContextMenuListener
//
// Subscribe to the events that will allow us to track context menus. Bascially, this
// is just the context-menu DOM event.
//
NS_IMETHODIMP
ChromeContextMenuListener::AddContextMenuListener()
{
if (mEventTarget) {
nsresult rv =
mEventTarget->AddEventListener(NS_LITERAL_STRING("contextmenu"), this,
false, false);
NS_ENSURE_SUCCESS(rv, rv);
mContextMenuListenerInstalled = true;
}
return NS_OK;
}
//
// RemoveContextMenuListener
//
// Unsubscribe from all the various context menu events that we were listening to.
//
NS_IMETHODIMP
ChromeContextMenuListener::RemoveContextMenuListener()
{
if (mEventTarget) {
nsresult rv =
mEventTarget->RemoveEventListener(NS_LITERAL_STRING("contextmenu"), this,
false);
NS_ENSURE_SUCCESS(rv, rv);
mContextMenuListenerInstalled = false;
}
return NS_OK;
}
//
// AddChromeListeners
//
// Hook up things to the chrome like context menus and tooltips, if the chrome
// has implemented the right interfaces.
//
NS_IMETHODIMP
ChromeContextMenuListener::AddChromeListeners()
{
if (!mEventTarget)
GetDOMEventTarget(mWebBrowser, getter_AddRefs(mEventTarget));
// Register the appropriate events for context menus, but only if
// the embedding chrome cares.
nsresult rv = NS_OK;
nsCOMPtr<nsIContextMenuListener2> contextListener2(do_QueryInterface(mWebBrowserChrome));
nsCOMPtr<nsIContextMenuListener> contextListener(do_QueryInterface(mWebBrowserChrome));
if ((contextListener || contextListener2) && !mContextMenuListenerInstalled)
rv = AddContextMenuListener();
return rv;
} // AddChromeListeners
//
// RemoveChromeListeners
//
// Unsubscribe from the various things we've hooked up to the window root.
//
NS_IMETHODIMP
ChromeContextMenuListener::RemoveChromeListeners()
{
if (mContextMenuListenerInstalled)
RemoveContextMenuListener();
mEventTarget = nullptr;
// it really doesn't matter if these fail...
return NS_OK;
} // RemoveChromeTooltipListeners
//
// ContextMenu
//
// We're on call to show the context menu. Dig around in the DOM to
// find the type of object we're dealing with and notify the front
// end chrome.
//
NS_IMETHODIMP
ChromeContextMenuListener::HandleEvent(nsIDOMEvent* aMouseEvent)
{
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aMouseEvent);
NS_ENSURE_TRUE(mouseEvent, NS_ERROR_UNEXPECTED);
bool isDefaultPrevented = false;
aMouseEvent->GetDefaultPrevented(&isDefaultPrevented);
if (isDefaultPrevented) {
return NS_OK;
}
nsCOMPtr<EventTarget> targetNode = aMouseEvent->InternalDOMEvent()->GetTarget();
if (!targetNode)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMNode> targetDOMnode;
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(targetNode);
if (!node)
return NS_OK;
// Stop the context menu event going to other windows (bug 78396)
aMouseEvent->PreventDefault();
// If the listener is a nsIContextMenuListener2, create the info object
nsCOMPtr<nsIContextMenuListener2> menuListener2(do_QueryInterface(mWebBrowserChrome));
nsContextMenuInfo *menuInfoImpl = nullptr;
nsCOMPtr<nsIContextMenuInfo> menuInfo;
if (menuListener2) {
menuInfoImpl = new nsContextMenuInfo;
menuInfo = menuInfoImpl;
}
uint32_t flags = nsIContextMenuListener::CONTEXT_NONE;
uint32_t flags2 = nsIContextMenuListener2::CONTEXT_NONE;
// XXX test for selected text
uint16_t nodeType;
nsresult res = node->GetNodeType(&nodeType);
NS_ENSURE_SUCCESS(res, res);
// First, checks for nodes that never have children.
if (nodeType == nsIDOMNode::ELEMENT_NODE) {
nsCOMPtr<nsIImageLoadingContent> content(do_QueryInterface(node));
if (content) {
nsCOMPtr<nsIURI> imgUri;
content->GetCurrentURI(getter_AddRefs(imgUri));
if (imgUri) {
flags |= nsIContextMenuListener::CONTEXT_IMAGE;
flags2 |= nsIContextMenuListener2::CONTEXT_IMAGE;
targetDOMnode = node;
}
}
nsCOMPtr<nsIFormControl> formControl(do_QueryInterface(node));
if (formControl) {
if (formControl->GetType() == NS_FORM_TEXTAREA) {
flags |= nsIContextMenuListener::CONTEXT_TEXT;
flags2 |= nsIContextMenuListener2::CONTEXT_TEXT;
targetDOMnode = node;
} else {
nsCOMPtr<nsIDOMHTMLInputElement> inputElement(do_QueryInterface(formControl));
if (inputElement) {
flags |= nsIContextMenuListener::CONTEXT_INPUT;
flags2 |= nsIContextMenuListener2::CONTEXT_INPUT;
if (menuListener2) {
if (formControl->IsSingleLineTextControl(false)) {
flags2 |= nsIContextMenuListener2::CONTEXT_TEXT;
}
}
targetDOMnode = node;
}
}
}
// always consume events for plugins and Java who may throw their
// own context menus but not for image objects. Document objects
// will never be targets or ancestors of targets, so that's OK.
nsCOMPtr<nsIDOMHTMLObjectElement> objectElement;
if (!(flags & nsIContextMenuListener::CONTEXT_IMAGE))
objectElement = do_QueryInterface(node);
nsCOMPtr<nsIDOMHTMLEmbedElement> embedElement(do_QueryInterface(node));
nsCOMPtr<nsIDOMHTMLAppletElement> appletElement(do_QueryInterface(node));
if (objectElement || embedElement || appletElement)
return NS_OK;
}
// Bubble out, looking for items of interest
do {
uint16_t nodeType;
res = node->GetNodeType(&nodeType);
NS_ENSURE_SUCCESS(res, res);
if (nodeType == nsIDOMNode::ELEMENT_NODE) {
// Test if the element has an associated link
nsCOMPtr<nsIDOMElement> element(do_QueryInterface(node));
bool hasAttr = false;
res = element->HasAttribute(NS_LITERAL_STRING("href"), &hasAttr);
if (NS_SUCCEEDED(res) && hasAttr)
{
flags |= nsIContextMenuListener::CONTEXT_LINK;
flags2 |= nsIContextMenuListener2::CONTEXT_LINK;
if (!targetDOMnode)
targetDOMnode = node;
if (menuInfoImpl)
menuInfoImpl->SetAssociatedLink(node);
break; // exit do-while
}
}
// walk-up-the-tree
nsCOMPtr<nsIDOMNode> parentNode;
node->GetParentNode(getter_AddRefs(parentNode));
node = parentNode;
} while (node);
if (!flags && !flags2) {
// We found nothing of interest so far, check if we
// have at least an html document.
nsCOMPtr<nsIDOMDocument> document;
node = do_QueryInterface(targetNode);
node->GetOwnerDocument(getter_AddRefs(document));
nsCOMPtr<nsIDOMHTMLDocument> htmlDocument(do_QueryInterface(document));
if (htmlDocument) {
flags |= nsIContextMenuListener::CONTEXT_DOCUMENT;
flags2 |= nsIContextMenuListener2::CONTEXT_DOCUMENT;
targetDOMnode = node;
if (!(flags & nsIContextMenuListener::CONTEXT_IMAGE)) {
// check if this is a background image that the user was trying to click on
// and if the listener is ready for that (only nsIContextMenuListener2 and up)
if (menuInfoImpl && menuInfoImpl->HasBackgroundImage(targetDOMnode)) {
flags2 |= nsIContextMenuListener2::CONTEXT_BACKGROUND_IMAGE;
// For the embedder to get the correct background image
// targetDOMnode must point to the original node.
targetDOMnode = do_QueryInterface(targetNode);
}
}
}
}
// we need to cache the event target into the focus controller's popupNode
// so we can get at it later from command code, etc.:
// get the dom window
nsCOMPtr<nsIDOMWindow> win;
res = mWebBrowser->GetContentDOMWindow(getter_AddRefs(win));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(win, NS_ERROR_FAILURE);
nsCOMPtr<nsPIDOMWindow> window(do_QueryInterface(win));
NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
nsCOMPtr<nsPIWindowRoot> root = window->GetTopWindowRoot();
NS_ENSURE_TRUE(root, NS_ERROR_FAILURE);
if (root) {
// set the window root's popup node to the event target
root->SetPopupNode(targetDOMnode);
}
// Tell the listener all about the event
if (menuListener2) {
menuInfoImpl->SetMouseEvent(aMouseEvent);
menuInfoImpl->SetDOMNode(targetDOMnode);
menuListener2->OnShowContextMenu(flags2, menuInfo);
} else {
nsCOMPtr<nsIContextMenuListener> menuListener(do_QueryInterface(mWebBrowserChrome));
if (menuListener)
menuListener->OnShowContextMenu(flags, aMouseEvent, targetDOMnode);
}
return NS_OK;
} // MouseDown
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