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fune/embedding/browser/webBrowser/nsDocShellTreeOwner.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Mozilla browser.
*
* The Initial Developer of the Original Code is
* Netscape Communications, Inc.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Travis Bogard <travis@netscape.com>
* Adam Lock <adamlock@netscape.com>
* Mike Pinkerton <pinkerton@netscape.com>
* Dan Rosen <dr@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
// Local Includes
#include "nsDocShellTreeOwner.h"
#include "nsWebBrowser.h"
// Helper Classes
#include "nsIGenericFactory.h"
#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"
// Interfaces needed to be included
#include "nsIContextMenuListener.h"
#include "nsIContextMenuListener2.h"
#include "nsITooltipListener.h"
#include "nsIPrivateDOMEvent.h"
#include "nsIDOMNode.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMDocument.h"
#include "nsIDOMDocumentType.h"
#include "nsIDOMElement.h"
#include "nsIDOMEvent.h"
#include "nsIDOMMouseEvent.h"
#include "nsIDOMEventReceiver.h"
#include "nsIDOMNamedNodeMap.h"
#include "nsIDOMHTMLInputElement.h"
#include "nsIWebNavigation.h"
#include "nsIDOMHTMLElement.h"
#include "nsIPresShell.h"
#include "nsPIDOMWindow.h"
#include "nsIDOMWindowCollection.h"
#include "nsIFocusController.h"
#include "nsIDOMWindowInternal.h"
#include "nsIScriptGlobalObject.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 "nsIPresContext.h"
//
// GetEventReceiver
//
// A helper routine that navigates the tricky path from a |nsWebBrowser| to
// a |nsIDOMEventReceiver| via the window root and chrome event handler.
//
static nsresult
GetEventReceiver ( nsWebBrowser* inBrowser, nsIDOMEventReceiver** outEventRcvr )
{
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);
nsIChromeEventHandler *chromeHandler = rootWindow->GetChromeEventHandler();
NS_ENSURE_TRUE(chromeHandler, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMEventReceiver> rcvr = do_QueryInterface(chromeHandler);
*outEventRcvr = rcvr;
NS_IF_ADDREF(*outEventRcvr);
return NS_OK;
}
//*****************************************************************************
//*** nsDocShellTreeOwner: Object Management
//*****************************************************************************
nsDocShellTreeOwner::nsDocShellTreeOwner() :
mWebBrowser(nsnull),
mTreeOwner(nsnull),
mPrimaryContentShell(nsnull),
mWebBrowserChrome(nsnull),
mOwnerWin(nsnull),
mOwnerRequestor(nsnull),
mChromeTooltipListener(nsnull),
mChromeContextMenuListener(nsnull)
{
}
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(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)))
return mOwnerWin->QueryInterface(aIID, aSink);
if (aIID.Equals(NS_GET_IID(nsIPrompt))) {
nsIPrompt *prompt;
EnsurePrompter();
prompt = mPrompter;
if (prompt) {
NS_ADDREF(prompt);
*aSink = prompt;
return NS_OK;
}
return NS_NOINTERFACE;
}
if (aIID.Equals(NS_GET_IID(nsIAuthPrompt))) {
nsIAuthPrompt *prompt;
EnsureAuthPrompter();
prompt = mAuthPrompter;
if (prompt) {
NS_ADDREF(prompt);
*aSink = prompt;
return NS_OK;
}
return NS_NOINTERFACE;
}
if(mOwnerRequestor)
return mOwnerRequestor->GetInterface(aIID, aSink);
return NS_NOINTERFACE;
}
//*****************************************************************************
// nsDocShellTreeOwner::nsIDocShellTreeOwner
//*****************************************************************************
NS_IMETHODIMP
nsDocShellTreeOwner::FindItemWithName(const PRUnichar* aName,
nsIDocShellTreeItem* aRequestor,
nsIDocShellTreeItem** aFoundItem)
{
NS_ENSURE_ARG(aName);
NS_ENSURE_ARG_POINTER(aFoundItem);
*aFoundItem = nsnull; // 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.EqualsIgnoreCase("_blank"))
return NS_OK;
// _main is an IE target which should be case-insensitive but isn't
// see bug 217886 for details
if(name.EqualsIgnoreCase("_content") || name.EqualsLiteral("_main")) {
*aFoundItem = mWebBrowser->mDocShellAsItem;
NS_IF_ADDREF(*aFoundItem);
return NS_OK;
}
// first, is it us?
{
nsCOMPtr<nsIDOMWindow> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow) {
nsAutoString ourName;
domWindow->GetName(ourName);
if (name.Equals(ourName, nsCaseInsensitiveStringComparator())) {
*aFoundItem = mWebBrowser->mDocShellAsItem;
NS_IF_ADDREF(*aFoundItem);
return NS_OK;
}
}
}
// next, check our children
rv = FindChildWithName(aName, PR_TRUE, aRequestor, aFoundItem);
if(NS_FAILED(rv) || *aFoundItem)
return rv;
// next, if we have a parent and it isn't the requestor, ask it
nsCOMPtr<nsIDocShellTreeOwner> reqAsTreeOwner(do_QueryInterface(aRequestor));
if(mTreeOwner) {
if (mTreeOwner != reqAsTreeOwner)
return mTreeOwner->FindItemWithName(aName, mWebBrowser->mDocShellAsItem,
aFoundItem);
return NS_OK;
}
// finally, failing everything else, search all windows, if we're not already
if (mWebBrowser->mDocShellAsItem != aRequestor)
return FindItemWithNameAcrossWindows(aName, aFoundItem);
return NS_OK; // failed
}
nsresult
nsDocShellTreeOwner::FindChildWithName(const PRUnichar *aName, PRBool aRecurse,
nsIDocShellTreeItem* aRequestor,
nsIDocShellTreeItem **aFoundItem)
{
if (!mWebBrowser)
return NS_OK;
nsresult rv = NS_OK;
nsCOMPtr<nsIDOMWindow> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (!domWindow)
return NS_OK;
nsCOMPtr<nsIDOMWindowCollection> frames;
domWindow->GetFrames(getter_AddRefs(frames));
if (!frames)
return NS_OK;
PRUint32 ctr, count;
frames->GetLength(&count);
for (ctr = 0; ctr < count; ctr++) {
nsCOMPtr<nsIDOMWindow> frame;
frames->Item(ctr, getter_AddRefs(frame));
if (frame) {
nsCOMPtr<nsIScriptGlobalObject> sgo(do_QueryInterface(frame));
if (sgo) {
nsCOMPtr<nsIDocShellTreeItem> item =
do_QueryInterface(sgo->GetDocShell());
if (item && item != aRequestor) {
rv = item->FindItemWithName(aName, mWebBrowser->mDocShellAsItem, aFoundItem);
if (NS_FAILED(rv) || *aFoundItem)
break;
}
}
}
}
return rv;
}
nsresult
nsDocShellTreeOwner::FindItemWithNameAcrossWindows(const PRUnichar* aName,
nsIDocShellTreeItem** aFoundItem)
{
// search for the item across the list of top-level windows
nsCOMPtr<nsIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (!wwatch)
return NS_OK;
PRBool more;
nsresult rv;
nsCOMPtr<nsISimpleEnumerator> windows;
wwatch->GetWindowEnumerator(getter_AddRefs(windows));
rv = NS_OK;
do {
windows->HasMoreElements(&more);
if (!more)
break;
nsCOMPtr<nsISupports> nextSupWindow;
windows->GetNext(getter_AddRefs(nextSupWindow));
if (nextSupWindow) {
// it's a DOM Window. cut straight to the ScriptGlobalObject.
nsCOMPtr<nsIScriptGlobalObject> sgo(do_QueryInterface(nextSupWindow));
if (sgo) {
nsCOMPtr<nsIDocShellTreeItem> item =
do_QueryInterface(sgo->GetDocShell());
if (item) {
rv = item->FindItemWithName(aName, item, aFoundItem);
if (NS_FAILED(rv) || *aFoundItem)
break;
}
}
}
} while(1);
return rv;
}
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)
wwatch->AddWindow(domWindow, mWebBrowserChrome);
}
}
}
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,
PRBool aPrimary, const PRUnichar* aID)
{
if(mTreeOwner)
return mTreeOwner->ContentShellAdded(aContentShell, aPrimary, aID);
if (aPrimary)
mPrimaryContentShell = aContentShell;
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPrimaryContentShell(nsIDocShellTreeItem** aShell)
{
NS_ENSURE_ARG_POINTER(aShell);
if(mTreeOwner)
return mTreeOwner->GetPrimaryContentShell(aShell);
*aShell = (mPrimaryContentShell ? mPrimaryContentShell : mWebBrowser->mDocShellAsItem.get());
NS_IF_ADDREF(*aShell);
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SizeShellTo(nsIDocShellTreeItem* aShellItem,
PRInt32 aCX, PRInt32 aCY)
{
NS_ENSURE_STATE(mTreeOwner || mWebBrowserChrome);
if(mTreeOwner)
return mTreeOwner->SizeShellTo(aShellItem, aCX, aCY);
if(aShellItem == mWebBrowser->mDocShellAsItem)
return mWebBrowserChrome->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.
*/
nsCOMPtr<nsIPresContext> 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();
float pixelScale;
pixelScale = presContext->TwipsToPixels();
PRInt32 browserCX = PRInt32((float)shellArea.width*pixelScale);
PRInt32 browserCY = PRInt32((float)shellArea.height*pixelScale);
return mWebBrowserChrome->SizeBrowserTo(browserCX, browserCY);
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetPersistence(PRBool aPersistPosition,
PRBool aPersistSize,
PRBool aPersistSizeMode)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPersistence(PRBool* aPersistPosition,
PRBool* aPersistSize,
PRBool* aPersistSizeMode)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
//*****************************************************************************
// nsDocShellTreeOwner::nsIBaseWindow
//*****************************************************************************
NS_IMETHODIMP
nsDocShellTreeOwner::InitWindow(nativeWindow aParentNativeWindow,
nsIWidget* aParentWidget, PRInt32 aX,
PRInt32 aY, PRInt32 aCX, PRInt32 aCY)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::Create()
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::Destroy()
{
if (mOwnerWin)
{
return mWebBrowserChrome->DestroyBrowserWindow();
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetPosition(PRInt32 aX, PRInt32 aY)
{
if (mOwnerWin)
{
return mOwnerWin->SetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, 0, 0);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPosition(PRInt32* aX, PRInt32* aY)
{
if (mOwnerWin)
{
return mOwnerWin->GetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, nsnull, nsnull);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetSize(PRInt32 aCX, PRInt32 aCY, PRBool aRepaint)
{
if (mOwnerWin)
{
return mOwnerWin->SetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER,
0, 0, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetSize(PRInt32* aCX, PRInt32* aCY)
{
if (mOwnerWin)
{
return mOwnerWin->GetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER,
nsnull, nsnull, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetPositionAndSize(PRInt32 aX, PRInt32 aY, PRInt32 aCX,
PRInt32 aCY, PRBool aRepaint)
{
if (mOwnerWin)
{
return mOwnerWin->SetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER |
nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPositionAndSize(PRInt32* aX, PRInt32* aY, PRInt32* aCX,
PRInt32* aCY)
{
if (mOwnerWin)
{
return mOwnerWin->GetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER |
nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::Repaint(PRBool 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)
{
if (mOwnerWin)
{
return mOwnerWin->GetSiteWindow(aParentNativeWindow);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetParentNativeWindow(nativeWindow aParentNativeWindow)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetVisibility(PRBool* aVisibility)
{
if (mOwnerWin)
{
return mOwnerWin->GetVisibility(aVisibility);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetVisibility(PRBool aVisibility)
{
if (mOwnerWin)
{
return mOwnerWin->SetVisibility(aVisibility);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetEnabled(PRBool *aEnabled)
{
NS_ENSURE_ARG_POINTER(aEnabled);
*aEnabled = PR_TRUE;
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetEnabled(PRBool aEnabled)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetBlurSuppression(PRBool *aBlurSuppression)
{
NS_ENSURE_ARG_POINTER(aBlurSuppression);
*aBlurSuppression = PR_FALSE;
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetBlurSuppression(PRBool aBlurSuppression)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetMainWidget(nsIWidget** aMainWidget)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetFocus()
{
if (mOwnerWin)
{
return mOwnerWin->SetFocus();
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetTitle(PRUnichar** aTitle)
{
if (mOwnerWin)
{
return mOwnerWin->GetTitle(aTitle);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetTitle(const PRUnichar* aTitle)
{
if (mOwnerWin)
{
return mOwnerWin->SetTitle(aTitle);
}
return NS_ERROR_NULL_POINTER;
}
//*****************************************************************************
// nsDocShellTreeOwner::nsIWebProgressListener
//*****************************************************************************
NS_IMETHODIMP
nsDocShellTreeOwner::OnProgressChange(nsIWebProgress* aProgress,
nsIRequest* aRequest,
PRInt32 aCurSelfProgress,
PRInt32 aMaxSelfProgress,
PRInt32 aCurTotalProgress,
PRInt32 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,
PRUint32 aProgressStateFlags,
nsresult aStatus)
{
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnLocationChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsIURI* aURI)
{
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnStatusChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsresult aStatus,
const PRUnichar* aMessage)
{
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnSecurityChange(nsIWebProgress *aWebProgress,
nsIRequest *aRequest,
PRUint32 state)
{
return NS_OK;
}
//*****************************************************************************
// nsDocShellTreeOwner: Helpers
//*****************************************************************************
//*****************************************************************************
// nsDocShellTreeOwner: Accessors
//*****************************************************************************
void
nsDocShellTreeOwner::WebBrowser(nsWebBrowser* aWebBrowser)
{
if ( !aWebBrowser )
RemoveChromeListeners();
if (aWebBrowser != mWebBrowser) {
mPrompter = 0;
mAuthPrompter = 0;
}
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 if(mWebBrowserChrome)
mTreeOwner = nsnull;
else {
mTreeOwner = nsnull;
NS_ENSURE_SUCCESS(SetWebBrowserChrome(nsnull), NS_ERROR_FAILURE);
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetWebBrowserChrome(nsIWebBrowserChrome* aWebBrowserChrome)
{
if(!aWebBrowserChrome) {
mWebBrowserChrome = nsnull;
mOwnerWin = nsnull;
mOwnerRequestor = nsnull;
} 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;
// install tooltips
if ( !mChromeTooltipListener ) {
nsCOMPtr<nsITooltipListener> tooltipListener ( do_QueryInterface(mWebBrowserChrome) );
if ( tooltipListener ) {
mChromeTooltipListener = new ChromeTooltipListener ( mWebBrowser, mWebBrowserChrome );
if ( mChromeTooltipListener ) {
NS_ADDREF(mChromeTooltipListener);
rv = mChromeTooltipListener->AddChromeListeners();
}
else
rv = NS_ERROR_OUT_OF_MEMORY;
}
}
// install context menus
if ( !mChromeContextMenuListener ) {
nsCOMPtr<nsIContextMenuListener2> contextListener2 ( do_QueryInterface(mWebBrowserChrome) );
nsCOMPtr<nsIContextMenuListener> contextListener ( do_QueryInterface(mWebBrowserChrome) );
if ( contextListener2 || contextListener ) {
mChromeContextMenuListener = new ChromeContextMenuListener ( mWebBrowser, mWebBrowserChrome );
if ( mChromeContextMenuListener ) {
NS_ADDREF(mChromeContextMenuListener);
rv = mChromeContextMenuListener->AddChromeListeners();
}
else
rv = NS_ERROR_OUT_OF_MEMORY;
}
}
// install the external dragDrop handler
if ( !mChromeDragHandler ) {
mChromeDragHandler = do_CreateInstance("@mozilla.org:/content/content-area-dragdrop;1", &rv);
NS_ASSERTION(mChromeDragHandler, "Couldn't create the chrome drag handler");
if ( mChromeDragHandler ) {
nsCOMPtr<nsIDOMEventReceiver> rcvr;
GetEventReceiver(mWebBrowser, getter_AddRefs(rcvr));
nsCOMPtr<nsIDOMEventTarget> rcvrTarget(do_QueryInterface(rcvr));
mChromeDragHandler->HookupTo(rcvrTarget, NS_STATIC_CAST(nsIWebNavigation*, mWebBrowser));
}
}
return rv;
} // AddChromeListeners
NS_IMETHODIMP
nsDocShellTreeOwner::RemoveChromeListeners()
{
if ( mChromeTooltipListener ) {
mChromeTooltipListener->RemoveChromeListeners();
NS_RELEASE(mChromeTooltipListener);
}
if ( mChromeContextMenuListener ) {
mChromeContextMenuListener->RemoveChromeListeners();
NS_RELEASE(mChromeContextMenuListener);
}
if ( mChromeDragHandler )
mChromeDragHandler->Detach();
return NS_OK;
}
#ifdef XP_MAC
#pragma mark -
#endif
///////////////////////////////////////////////////////////////////////////////
// DefaultTooltipTextProvider
class DefaultTooltipTextProvider : public nsITooltipTextProvider
{
public:
DefaultTooltipTextProvider();
NS_DECL_ISUPPORTS
NS_DECL_NSITOOLTIPTEXTPROVIDER
protected:
nsCOMPtr<nsIAtom> mTag_dialog;
nsCOMPtr<nsIAtom> mTag_dialogheader;
nsCOMPtr<nsIAtom> mTag_window;
};
NS_IMPL_THREADSAFE_ISUPPORTS1(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");
}
/* void getNodeText (in nsIDOMNode aNode, out wstring aText); */
NS_IMETHODIMP
DefaultTooltipTextProvider::GetNodeText(nsIDOMNode *aNode, PRUnichar **aText,
PRBool *_retval)
{
NS_ENSURE_ARG_POINTER(aNode);
NS_ENSURE_ARG_POINTER(aText);
nsString outText;
PRBool found = PR_FALSE;
nsCOMPtr<nsIDOMNode> current ( aNode );
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 = PR_TRUE;
else {
// ...ok, that didn't work, try it in the XLink namespace
currElement->GetAttributeNS(NS_LITERAL_STRING("http://www.w3.org/1999/xlink"), NS_LITERAL_STRING("title"), outText);
if ( outText.Length() )
found = PR_TRUE;
}
}
}
}
// 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) : nsnull;
return NS_OK;
}
///////////////////////////////////////////////////////////////////////////////
NS_IMPL_ADDREF(ChromeTooltipListener)
NS_IMPL_RELEASE(ChromeTooltipListener)
NS_INTERFACE_MAP_BEGIN(ChromeTooltipListener)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMMouseListener)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsIDOMEventListener, nsIDOMMouseListener)
NS_INTERFACE_MAP_ENTRY(nsIDOMMouseListener)
NS_INTERFACE_MAP_ENTRY(nsIDOMMouseMotionListener)
NS_INTERFACE_MAP_ENTRY(nsIDOMKeyListener)
NS_INTERFACE_MAP_END
//
// ChromeTooltipListener ctor
//
ChromeTooltipListener::ChromeTooltipListener(nsWebBrowser* inBrowser,
nsIWebBrowserChrome* inChrome)
: mWebBrowser(inBrowser), mWebBrowserChrome(inChrome),
mTooltipListenerInstalled(PR_FALSE),
mMouseClientX(0), mMouseClientY(0),
mShowingTooltip(PR_FALSE)
{
mTooltipTextProvider = do_GetService(NS_TOOLTIPTEXTPROVIDER_CONTRACTID);
if (!mTooltipTextProvider) {
nsISupports *pProvider = (nsISupports *) new DefaultTooltipTextProvider;
mTooltipTextProvider = do_QueryInterface(pProvider);
}
} // 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 ( !mEventReceiver )
GetEventReceiver(mWebBrowser, getter_AddRefs(mEventReceiver));
// 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 (mEventReceiver) {
nsIDOMMouseListener *pListener = NS_STATIC_CAST(nsIDOMMouseListener *, this);
nsresult rv = mEventReceiver->AddEventListenerByIID(pListener, NS_GET_IID(nsIDOMMouseListener));
nsresult rv2 = mEventReceiver->AddEventListenerByIID(pListener, NS_GET_IID(nsIDOMMouseMotionListener));
nsresult rv3 = mEventReceiver->AddEventListenerByIID(pListener, NS_GET_IID(nsIDOMKeyListener));
// if all 3 succeed, we're a go!
if (NS_SUCCEEDED(rv) && NS_SUCCEEDED(rv2) && NS_SUCCEEDED(rv3))
mTooltipListenerInstalled = PR_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();
mEventReceiver = nsnull;
// 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 (mEventReceiver) {
nsIDOMMouseListener *pListener = NS_STATIC_CAST(nsIDOMMouseListener *, this);
nsresult rv = mEventReceiver->RemoveEventListenerByIID(pListener, NS_GET_IID(nsIDOMMouseListener));
nsresult rv2 = mEventReceiver->RemoveEventListenerByIID(pListener, NS_GET_IID(nsIDOMMouseMotionListener));
nsresult rv3 = mEventReceiver->RemoveEventListenerByIID(pListener, NS_GET_IID(nsIDOMKeyListener));
if (NS_SUCCEEDED(rv) && NS_SUCCEEDED(rv2) && NS_SUCCEEDED(rv3))
mTooltipListenerInstalled = PR_FALSE;
}
return NS_OK;
}
//
// KeyDown
//
// When the user starts typing, they generaly don't want to see any messy wax
// builup. Hide the tooltip.
//
nsresult
ChromeTooltipListener::KeyDown(nsIDOMEvent* aMouseEvent)
{
return HideTooltip();
} // KeyDown
//
// KeyUp
// KeyPress
//
// We can ignore these as they are already handled by KeyDown
//
nsresult
ChromeTooltipListener::KeyUp(nsIDOMEvent* aMouseEvent)
{
return NS_OK;
} // KeyUp
nsresult
ChromeTooltipListener::KeyPress(nsIDOMEvent* aMouseEvent)
{
return NS_OK;
} // KeyPress
//
// MouseDown
//
// On a click, hide the tooltip
//
nsresult
ChromeTooltipListener::MouseDown(nsIDOMEvent* aMouseEvent)
{
return HideTooltip();
} // MouseDown
nsresult
ChromeTooltipListener::MouseUp(nsIDOMEvent* aMouseEvent)
{
return NS_OK;
}
nsresult
ChromeTooltipListener::MouseClick(nsIDOMEvent* aMouseEvent)
{
return NS_OK;
}
nsresult
ChromeTooltipListener::MouseDblClick(nsIDOMEvent* aMouseEvent)
{
return NS_OK;
}
nsresult
ChromeTooltipListener::MouseOver(nsIDOMEvent* aMouseEvent)
{
return NS_OK;
}
//
// MouseOut
//
// If we're responding to tooltips, hide the tip whenever the mouse leaves
// the area it was in.
nsresult
ChromeTooltipListener::MouseOut(nsIDOMEvent* aMouseEvent)
{
return HideTooltip();
}
//
// 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.
PRInt32 newMouseX, newMouseY;
mouseEvent->GetClientX(&newMouseX);
mouseEvent->GetClientY(&newMouseY);
if ( mMouseClientX == newMouseX && mMouseClientY == newMouseY )
return NS_OK;
mMouseClientX = newMouseX; mMouseClientY = newMouseY;
// We want to close the tip if it is being displayed and the mouse moves. Recall
// that |mShowingTooltip| is set when the popup is showing. Furthermore, as the mouse
// moves, we want to make sure we reset the timer to show it, so that the delay
// is from when the mouse stops moving, not when it enters the element.
if ( mShowingTooltip )
return HideTooltip();
if ( mTooltipTimer )
mTooltipTimer->Cancel();
mTooltipTimer = do_CreateInstance("@mozilla.org/timer;1");
if ( mTooltipTimer ) {
nsCOMPtr<nsIDOMEventTarget> eventTarget;
aMouseEvent->GetTarget(getter_AddRefs(eventTarget));
if ( eventTarget )
mPossibleTooltipNode = do_QueryInterface(eventTarget);
if ( mPossibleTooltipNode ) {
nsresult rv = mTooltipTimer->InitWithFuncCallback(sTooltipCallback, this, kTooltipShowTime,
nsITimer::TYPE_ONE_SHOT);
if (NS_FAILED(rv))
mPossibleTooltipNode = nsnull;
}
}
else
NS_WARNING ( "Could not create a timer for tooltip tracking" );
return NS_OK;
} // MouseMove
//
// ShowTooltip
//
// Tell the registered chrome that they should show the tooltip
//
NS_IMETHODIMP
ChromeTooltipListener::ShowTooltip(PRInt32 inXCoords, PRInt32 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 = PR_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 = nsnull;
// release tooltip target
mPossibleTooltipNode = nsnull;
}
if ( mAutoHideTimer ) {
mAutoHideTimer->Cancel();
mAutoHideTimer = nsnull;
}
// 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 = PR_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 = NS_STATIC_CAST(ChromeTooltipListener*, aChromeTooltipListener);
if ( self && self->mPossibleTooltipNode ) {
// 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) {
PRBool textFound = PR_FALSE;
self->mTooltipTextProvider->GetNodeText(
self->mPossibleTooltipNode, getter_Copies(tooltipText), &textFound);
if (textFound) {
nsString tipText(tooltipText);
self->CreateAutoHideTimer ( );
self->ShowTooltip (self->mMouseClientX, self->mMouseClientY, tipText);
}
}
// release tooltip target if there is one, NO MATTER WHAT
self->mPossibleTooltipNode = nsnull;
} // if "self" data valid
} // sTooltipCallback
//
// CreateAutoHideTimer
//
// Create a new timer to see if we should auto-hide. It's ok if this fails.
//
void
ChromeTooltipListener::CreateAutoHideTimer()
{
// just to be anal (er, safe)
if ( mAutoHideTimer ) {
mAutoHideTimer->Cancel();
mAutoHideTimer = nsnull;
}
mAutoHideTimer = do_CreateInstance("@mozilla.org/timer;1");
if ( mAutoHideTimer )
mAutoHideTimer->InitWithFuncCallback(sAutoHideCallback, this, kTooltipAutoHideTime,
nsITimer::TYPE_ONE_SHOT);
} // CreateAutoHideTimer
//
// sAutoHideCallback
//
// This fires after a tooltip has been open for a certain length of time. Just tell
// the listener to close the popup. We don't have to worry, because HideTooltip() can
// be called multiple times, even if the tip has already been closed.
//
void
ChromeTooltipListener::sAutoHideCallback(nsITimer *aTimer, void* aListener)
{
ChromeTooltipListener* self = NS_STATIC_CAST(ChromeTooltipListener*, aListener);
if ( self )
self->HideTooltip();
// NOTE: |aTimer| and |self->mAutoHideTimer| are invalid after calling ClosePopup();
} // sAutoHideCallback
#ifdef XP_MAC
#pragma mark -
#endif
NS_IMPL_ADDREF(ChromeContextMenuListener)
NS_IMPL_RELEASE(ChromeContextMenuListener)
NS_INTERFACE_MAP_BEGIN(ChromeContextMenuListener)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMContextMenuListener)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsIDOMEventListener, nsIDOMContextMenuListener)
NS_INTERFACE_MAP_ENTRY(nsIDOMContextMenuListener)
NS_INTERFACE_MAP_END
//
// ChromeTooltipListener ctor
//
ChromeContextMenuListener::ChromeContextMenuListener(nsWebBrowser* inBrowser, nsIWebBrowserChrome* inChrome )
: mContextMenuListenerInstalled(PR_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 (mEventReceiver) {
nsIDOMContextMenuListener *pListener = NS_STATIC_CAST(nsIDOMContextMenuListener *, this);
nsresult rv = mEventReceiver->AddEventListenerByIID(pListener, NS_GET_IID(nsIDOMContextMenuListener));
if (NS_SUCCEEDED(rv))
mContextMenuListenerInstalled = PR_TRUE;
}
return NS_OK;
}
//
// RemoveContextMenuListener
//
// Unsubscribe from all the various context menu events that we were listening to.
//
NS_IMETHODIMP
ChromeContextMenuListener::RemoveContextMenuListener()
{
if (mEventReceiver) {
nsIDOMContextMenuListener *pListener = NS_STATIC_CAST(nsIDOMContextMenuListener *, this);
nsresult rv = mEventReceiver->RemoveEventListenerByIID(pListener, NS_GET_IID(nsIDOMContextMenuListener));
if (NS_SUCCEEDED(rv))
mContextMenuListenerInstalled = PR_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 ( !mEventReceiver )
GetEventReceiver(mWebBrowser, getter_AddRefs(mEventReceiver));
// 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();
mEventReceiver = nsnull;
// 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::ContextMenu(nsIDOMEvent* aMouseEvent)
{
nsCOMPtr<nsIDOMEventTarget> targetNode;
nsresult res = aMouseEvent->GetTarget(getter_AddRefs(targetNode));
if (NS_FAILED(res))
return res;
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 = nsnull;
nsCOMPtr<nsIContextMenuInfo> menuInfo;
if (menuListener2) {
menuInfoImpl = new nsContextMenuInfo;
if (!menuInfoImpl)
return NS_ERROR_OUT_OF_MEMORY;
menuInfo = menuInfoImpl;
}
// Find the first node to be an element starting with this node and
// working up through its parents.
PRUint32 flags = nsIContextMenuListener::CONTEXT_NONE;
PRUint32 flags2 = nsIContextMenuListener2::CONTEXT_NONE;
nsCOMPtr<nsIContent> content;
do {
// XXX test for selected text
content = do_QueryInterface(node);
if (content && content->IsContentOfType(nsIContent::eHTML)) {
const char *tagStr;
content->Tag()->GetUTF8String(&tagStr);
// Test what kind of element we're dealing with here
if (strcmp(tagStr, "img") == 0)
{
flags |= nsIContextMenuListener::CONTEXT_IMAGE;
flags2 |= nsIContextMenuListener2::CONTEXT_IMAGE;
targetDOMnode = node;
// if we see an image, keep searching for a possible anchor
}
else if (strcmp(tagStr, "input") == 0)
{
// INPUT element - button, combo, checkbox, text etc.
flags |= nsIContextMenuListener::CONTEXT_INPUT;
flags2 |= nsIContextMenuListener2::CONTEXT_INPUT;
targetDOMnode = node;
// See if the input type is an image
if (menuListener2) {
nsCOMPtr<nsIDOMHTMLInputElement> inputElement(do_QueryInterface(node));
if (inputElement) {
nsAutoString inputElemType;
inputElement->GetType(inputElemType);
if (inputElemType.Equals(NS_LITERAL_STRING("image"), nsCaseInsensitiveStringComparator()))
flags2 |= nsIContextMenuListener2::CONTEXT_IMAGE;
}
}
break; // exit do-while
}
else if (strcmp(tagStr, "textarea") == 0)
{
// text area
flags |= nsIContextMenuListener::CONTEXT_TEXT;
flags2 |= nsIContextMenuListener2::CONTEXT_TEXT;
targetDOMnode = node;
break; // exit do-while
}
else if (strcmp(tagStr, "html") == 0)
{
if (!flags && !flags2) {
// only care about this if no other context was found.
flags |= nsIContextMenuListener::CONTEXT_DOCUMENT;
flags2 |= nsIContextMenuListener2::CONTEXT_DOCUMENT;
targetDOMnode = node;
}
if (!(flags & nsIContextMenuListener::CONTEXT_IMAGE)) {
// first 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(node)) {
flags2 |= nsIContextMenuListener2::CONTEXT_BACKGROUND_IMAGE;
}
}
break; // exit do-while
}
else if (strcmp(tagStr, "object") == 0 || /* XXX what about images and documents? */
strcmp(tagStr, "embed") == 0 ||
strcmp(tagStr, "applet") == 0)
{ // always consume events for plugins and Java
return NS_OK; // who may throw their own context menus
}
// Test if the element has an associated link
nsCOMPtr<nsIDOMElement> element(do_QueryInterface(node));
PRBool hasAttr = PR_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);
// 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);
// get the private dom window
nsCOMPtr<nsPIDOMWindow> privateWin(do_QueryInterface(win, &res));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(privateWin, NS_ERROR_FAILURE);
// get the focus controller
nsIFocusController *focusController = privateWin->GetRootFocusController();
NS_ENSURE_TRUE(focusController, NS_ERROR_FAILURE);
// set the focus controller's popup node to the event target
res = focusController->SetPopupNode(targetDOMnode);
NS_ENSURE_SUCCESS(res, res);
// 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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