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pjs/embedding/browser/webBrowser/nsDocShellTreeOwner.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* 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 Netscape are
* Copyright (C) 1999, Mozilla. All Rights Reserved.
*
* Contributor(s):
* Travis Bogard <travis@netscape.com>
* Adam Lock <adamlock@netscape.com>
* Mike Pinkerton <pinkerton@netscape.com>
*/
// Local Includes
#include "nsDocShellTreeOwner.h"
#include "nsWebBrowser.h"
// Helper Classes
#include "nsIGenericFactory.h"
#include "nsStyleCoord.h"
#include "nsHTMLReflowState.h"
// Interfaces needed to be included
#include "nsIContextMenuListener.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 "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"
static char *sWindowWatcherContractID = "@mozilla.org/embedcomp/window-watcher;1";
//*****************************************************************************
//*** nsDocShellTreeOwner: Object Management
//*****************************************************************************
nsDocShellTreeOwner::nsDocShellTreeOwner() :
mWebBrowser(nsnull),
mTreeOwner(nsnull),
mPrimaryContentShell(nsnull),
mWebBrowserChrome(nsnull),
mOwnerWin(nsnull),
mOwnerRequestor(nsnull),
mChromeListener(nsnull)
{
NS_INIT_REFCNT();
}
nsDocShellTreeOwner::~nsDocShellTreeOwner()
{
if ( mChromeListener ) {
mChromeListener->RemoveChromeListeners();
NS_RELEASE(mChromeListener);
}
}
//*****************************************************************************
// 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(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;
if(name.EqualsIgnoreCase("_content")) {
*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.EqualsIgnoreCase(ourName)) {
*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.get())
return mTreeOwner->FindItemWithName(aName, mWebBrowser->mDocShellAsItem.get(),
aFoundItem);
return NS_OK;
}
// finally, failing everything else, search all windows, if we're not already
if (mWebBrowser->mDocShellAsItem.get() != 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<nsIDocShell> docshell;
sgo->GetDocShell(getter_AddRefs(docshell));
if (docshell) {
nsCOMPtr<nsIDocShellTreeItem> item(do_QueryInterface(docshell));
if (item && item.get() != 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(sWindowWatcherContractID));
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<nsIDocShell> docshell;
sgo->GetDocShell(getter_AddRefs(docshell));
if (docshell) {
nsCOMPtr<nsIDocShellTreeItem> item(do_QueryInterface(docshell));
if (item) {
rv = item->FindItemWithName(aName, item, aFoundItem);
if (NS_FAILED(rv) || *aFoundItem)
break;
}
}
}
}
} while(1);
return rv;
}
void nsDocShellTreeOwner::AddToWatcher() {
if (mWebBrowser) {
nsCOMPtr<nsIDOMWindow> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow) {
nsCOMPtr<nsPIWindowWatcher> wwatch(do_GetService(sWindowWatcherContractID));
if (wwatch)
wwatch->AddWindow(domWindow);
}
}
}
void nsDocShellTreeOwner::RemoveFromWatcher() {
if (mWebBrowser) {
nsCOMPtr<nsIDOMWindow> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow) {
nsCOMPtr<nsPIWindowWatcher> wwatch(do_GetService(sWindowWatcherContractID));
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.get())
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);
nsCOMPtr<nsIPresShell> presShell;
presContext->GetShell(getter_AddRefs(presShell));
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(presShell->ResizeReflow(NS_UNCONSTRAINEDSIZE,
NS_UNCONSTRAINEDSIZE), NS_ERROR_FAILURE);
nsRect shellArea;
presContext->GetVisibleArea(shellArea);
float pixelScale;
presContext->GetTwipsToPixels(&pixelScale);
PRInt32 browserCX = PRInt32((float)shellArea.width*pixelScale);
PRInt32 browserCY = PRInt32((float)shellArea.height*pixelScale);
return mWebBrowserChrome->SizeBrowserTo(browserCX, browserCY);
}
NS_IMETHODIMP nsDocShellTreeOwner::ShowModal()
{
if(mTreeOwner)
return mTreeOwner->ShowModal();
return mWebBrowserChrome->ShowAsModal();
}
NS_IMETHODIMP nsDocShellTreeOwner::IsModal(PRBool *_retval)
{
if(mTreeOwner)
return mTreeOwner->IsModal(_retval);
return mWebBrowserChrome->IsWindowModal(_retval);
}
NS_IMETHODIMP nsDocShellTreeOwner::ExitModalLoop(nsresult aStatus)
{
if(mTreeOwner)
return mTreeOwner->ExitModalLoop(aStatus);
return mWebBrowserChrome->ExitModalEventLoop(aStatus);
}
NS_IMETHODIMP nsDocShellTreeOwner::GetNewWindow(PRInt32 aChromeFlags,
nsIDocShellTreeItem** aDocShellTreeItem)
{
nsresult rv;
if(mTreeOwner)
return mTreeOwner->GetNewWindow(aChromeFlags, aDocShellTreeItem);
*aDocShellTreeItem = nsnull;
NS_ENSURE_TRUE(mWebBrowserChrome, NS_ERROR_FAILURE);
aChromeFlags &= ~(nsIWebBrowserChrome::CHROME_WITH_SIZE | nsIWebBrowserChrome::CHROME_WITH_POSITION);
nsCOMPtr<nsIWebBrowser> webBrowser;
rv = mWebBrowserChrome->CreateBrowserWindow(PRUint32(aChromeFlags),
-1, -1, -1, -1, // this is kind of a problem
getter_AddRefs(webBrowser));
if (NS_SUCCEEDED(rv) && webBrowser) {
nsCOMPtr<nsIInterfaceRequestor> asreq(do_QueryInterface(webBrowser));
if (asreq) {
nsCOMPtr<nsIDocShell> asshell(do_GetInterface(asreq));
if (asshell)
rv = CallQueryInterface(asshell, aDocShellTreeItem);
}
}
return rv;
}
//*****************************************************************************
// 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 mOwnerWin->Destroy();
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP nsDocShellTreeOwner::SetPosition(PRInt32 aX, PRInt32 aY)
{
if (mOwnerWin)
{
return mOwnerWin->SetPosition(aX, aY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP nsDocShellTreeOwner::GetPosition(PRInt32* aX, PRInt32* aY)
{
if (mOwnerWin)
{
return mOwnerWin->GetPosition(aX, aY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP nsDocShellTreeOwner::SetSize(PRInt32 aCX, PRInt32 aCY, PRBool aRepaint)
{
if (mOwnerWin)
{
return mOwnerWin->SetSize(aCX, aCY, aRepaint);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP nsDocShellTreeOwner::GetSize(PRInt32* aCX, PRInt32* aCY)
{
if (mOwnerWin)
{
return mOwnerWin->GetSize(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->SetPositionAndSize(aX, aY, aCX, aCY, aRepaint);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP nsDocShellTreeOwner::GetPositionAndSize(PRInt32* aX, PRInt32* aY,
PRInt32* aCX, PRInt32* aCY)
{
if (mOwnerWin)
{
return mOwnerWin->GetPositionAndSize(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)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP nsDocShellTreeOwner::SetVisibility(PRBool aVisibility)
{
return NS_ERROR_NULL_POINTER;
}
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::FocusAvailable(nsIBaseWindow* aCurrentFocus,
PRBool* aTookFocus)
{
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,
PRInt32 aProgressStateFlags,
nsresult aStatus)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsDocShellTreeOwner::OnLocationChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsIURI* aURI)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnStatusChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsresult aStatus,
const PRUnichar* aMessage)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnSecurityChange(nsIWebProgress *aWebProgress,
nsIRequest *aRequest,
PRInt32 state)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
//*****************************************************************************
// nsDocShellTreeOwner: Helpers
//*****************************************************************************
//*****************************************************************************
// nsDocShellTreeOwner: Accessors
//*****************************************************************************
void nsDocShellTreeOwner::WebBrowser(nsWebBrowser* aWebBrowser)
{
if ( !aWebBrowser ) {
if ( mChromeListener ) {
mChromeListener->RemoveChromeListeners();
NS_RELEASE(mChromeListener);
}
}
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<nsIWebBrowserSiteWindow> 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;
if ( !mChromeListener ) {
nsCOMPtr<nsIContextMenuListener> contextListener ( do_QueryInterface(mWebBrowserChrome) );
nsCOMPtr<nsITooltipListener> tooltipListener ( do_QueryInterface(mWebBrowserChrome) );
if ( contextListener || tooltipListener ) {
mChromeListener = new ChromeListener ( mWebBrowser, mWebBrowserChrome );
if ( mChromeListener ) {
NS_ADDREF(mChromeListener);
rv = mChromeListener->AddChromeListeners();
}
else
rv = NS_ERROR_OUT_OF_MEMORY;
}
}
return rv;
} // AddChromeListeners
#ifdef XP_MAC
#pragma mark -
#endif
NS_IMPL_ADDREF(ChromeListener)
NS_IMPL_RELEASE(ChromeListener)
NS_INTERFACE_MAP_BEGIN(ChromeListener)
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
//
// ChromeListener ctor
//
ChromeListener :: ChromeListener ( nsWebBrowser* inBrowser, nsIWebBrowserChrome* inChrome )
: mWebBrowser(inBrowser), mWebBrowserChrome(inChrome),
mContextMenuListenerInstalled(PR_FALSE), mTooltipListenerInstalled(PR_FALSE),
mShowingTooltip(PR_FALSE), mMouseClientX(0), mMouseClientY(0)
{
NS_INIT_REFCNT();
} // ctor
//
// ChromeListener dtor
//
ChromeListener :: ~ChromeListener ( )
{
} // dtor
//
// AddChromeListeners
//
// Hook up things to the chrome like context menus and tooltips, if the chrome
// has implemented the right interfaces.
//
NS_IMETHODIMP
ChromeListener :: AddChromeListeners ( )
{
if ( !mEventReceiver ) {
nsCOMPtr<nsIDOMWindow> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
NS_ENSURE_TRUE(domWindow, NS_ERROR_FAILURE);
nsCOMPtr<nsPIDOMWindow> domWindowPrivate = do_QueryInterface(domWindow);
NS_ENSURE_TRUE(domWindowPrivate, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMWindowInternal> rootWindow;
domWindowPrivate->GetPrivateRoot(getter_AddRefs(rootWindow));
NS_ENSURE_TRUE(rootWindow, NS_ERROR_FAILURE);
nsCOMPtr<nsIChromeEventHandler> chromeHandler;
nsCOMPtr<nsPIDOMWindow> piWin(do_QueryInterface(rootWindow));
piWin->GetChromeEventHandler(getter_AddRefs(chromeHandler));
NS_ENSURE_TRUE(chromeHandler, NS_ERROR_FAILURE);
mEventReceiver = do_QueryInterface(chromeHandler);
}
// Register the appropriate events for context menus, but only if
// the embedding chrome cares.
nsresult rv = NS_OK;
nsCOMPtr<nsIContextMenuListener> contextListener ( do_QueryInterface(mWebBrowserChrome) );
if ( contextListener && !mContextMenuListenerInstalled ) {
rv = AddContextMenuListener();
if ( NS_FAILED(rv) )
return rv;
}
// Register the appropriate events for tooltips, but only if
// the embedding chrome cares.
nsCOMPtr<nsITooltipListener> tooltipListener ( do_QueryInterface(mWebBrowserChrome) );
if ( tooltipListener && !mTooltipListenerInstalled ) {
rv = AddTooltipListener();
if ( NS_FAILED(rv) )
return rv;
}
return rv;
} // AddChromeListeners
//
// AddContextMenuListener
//
// Subscribe to the events that will allow us to track context menus. Bascially, this
// is just the mouseDown event.
//
NS_IMETHODIMP
ChromeListener :: AddContextMenuListener()
{
if (mEventReceiver) {
nsIDOMMouseListener *pListener = NS_STATIC_CAST(nsIDOMMouseListener *, this);
nsresult rv = mEventReceiver->AddEventListenerByIID(pListener, NS_GET_IID(nsIDOMMouseListener));
if (NS_SUCCEEDED(rv))
mContextMenuListenerInstalled = PR_TRUE;
}
return NS_OK;
}
//
// 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
ChromeListener :: 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, including
// context menus and tooltips for starters.
//
NS_IMETHODIMP
ChromeListener :: RemoveChromeListeners ( )
{
HideTooltip();
if ( mContextMenuListenerInstalled )
RemoveContextMenuListener();
if ( mTooltipListenerInstalled )
RemoveTooltipListener();
mEventReceiver = nsnull;
// it really doesn't matter if these fail...
return NS_OK;
} // RemoveChromeListeners
//
// RemoveContextMenuListener
//
// Unsubscribe from all the various context menu events that we were listening to.
// Bascially, this is just the mouseDown event.
//
NS_IMETHODIMP
ChromeListener :: RemoveContextMenuListener()
{
if (mEventReceiver) {
nsIDOMMouseListener *pListener = NS_STATIC_CAST(nsIDOMMouseListener *, this);
nsresult rv = mEventReceiver->RemoveEventListenerByIID(pListener, NS_GET_IID(nsIDOMMouseListener));
if (NS_SUCCEEDED(rv))
mContextMenuListenerInstalled = PR_FALSE;
}
return NS_OK;
}
//
// RemoveTooltipListener
//
// Unsubscribe from all the various tooltip events that we were listening to
//
NS_IMETHODIMP
ChromeListener :: 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
ChromeListener::KeyDown(nsIDOMEvent* aMouseEvent)
{
// make sure we're a tooltip. if not, bail. Just to be safe.
if ( ! mTooltipListenerInstalled )
return NS_OK;
return HideTooltip();
} // KeyDown
//
// KeyUp
// KeyPress
//
// We can ignore these as they are already handled by KeyDown
//
nsresult
ChromeListener::KeyUp(nsIDOMEvent* aMouseEvent)
{
return NS_OK;
} // KeyUp
nsresult
ChromeListener::KeyPress(nsIDOMEvent* aMouseEvent)
{
return NS_OK;
} // KeyPress
//
// MouseDown
//
// Do the processing for context menus, if this is a right-mouse click
//
nsresult
ChromeListener::MouseDown(nsIDOMEvent* aMouseEvent)
{
nsCOMPtr<nsIDOMMouseEvent> mouseEvent (do_QueryInterface(aMouseEvent));
if (!mouseEvent)
return NS_OK;
// if the mouse goes down for any reason when a tooltip is showing,
// we want to hide it, but continue processing the event.
if ( mShowingTooltip )
HideTooltip();
// Test for right mouse button click
PRUint16 buttonNumber;
nsresult res = mouseEvent->GetButton(&buttonNumber);
if (NS_FAILED(res))
return res;
if (buttonNumber != 2) // 2 is the magic number
return NS_OK;
nsCOMPtr<nsIDOMEventTarget> targetNode;
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;
// Find the first node to be an element starting with this node and
// working up through its parents.
PRUint32 flags = nsIContextMenuListener::CONTEXT_NONE;
nsCOMPtr<nsIDOMHTMLElement> element;
do {
//PRUint16 type;
//node->GetNodeType(&type);
// XXX test for selected text
element = do_QueryInterface(node);
if (element)
{
nsAutoString tag;
element->GetTagName(tag);
// Test what kind of element we're dealing with here
if (tag.EqualsWithConversion("img", PR_TRUE))
{
flags |= nsIContextMenuListener::CONTEXT_IMAGE;
targetDOMnode = node;
// if we see an image, keep searching for a possible anchor
}
else if (tag.EqualsWithConversion("input", PR_TRUE))
{
// INPUT element - button, combo, checkbox, text etc.
flags |= nsIContextMenuListener::CONTEXT_INPUT;
targetDOMnode = node;
break; // exit do-while
}
else if (tag.EqualsWithConversion("textarea", PR_TRUE))
{
// text area
flags |= nsIContextMenuListener::CONTEXT_TEXT;
targetDOMnode = node;
break; // exit do-while
}
else if (tag.EqualsWithConversion("html", PR_TRUE))
{
// only care about this if no other context was found.
if (!flags) {
flags |= nsIContextMenuListener::CONTEXT_DOCUMENT;
targetDOMnode = node;
}
break; // exit do-while
}
// Test if the element has an associated link
nsCOMPtr<nsIDOMNamedNodeMap> attributes;
node->GetAttributes(getter_AddRefs(attributes));
if (attributes)
{
nsCOMPtr<nsIDOMNode> hrefNode;
nsAutoString href; href.AssignWithConversion("href");
attributes->GetNamedItem(href, getter_AddRefs(hrefNode));
if (hrefNode)
{
flags |= nsIContextMenuListener::CONTEXT_LINK;
if (!targetDOMnode)
targetDOMnode = node;
break; // exit do-while
}
}
}
// walk-up-the-tree
nsCOMPtr<nsIDOMNode> parentNode;
node->GetParentNode(getter_AddRefs(parentNode));
node = parentNode;
} while (node);
// Tell the listener all about the event
nsCOMPtr<nsIContextMenuListener> menuListener(do_QueryInterface(mWebBrowserChrome));
if ( menuListener )
menuListener->OnShowContextMenu(flags, aMouseEvent, targetDOMnode);
return NS_OK;
} // MouseDown
nsresult
ChromeListener::MouseUp(nsIDOMEvent* aMouseEvent)
{
return NS_OK;
}
nsresult
ChromeListener::MouseClick(nsIDOMEvent* aMouseEvent)
{
return NS_OK;
}
nsresult
ChromeListener::MouseDblClick(nsIDOMEvent* aMouseEvent)
{
return NS_OK;
}
nsresult
ChromeListener::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
ChromeListener::MouseOut(nsIDOMEvent* aMouseEvent)
{
// make sure we're a tooltip. if not, bail. Just to be safe.
if ( ! mTooltipListenerInstalled )
return NS_OK;
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
ChromeListener::MouseMove(nsIDOMEvent* aMouseEvent)
{
// make sure we're a tooltip. if not, bail. Just to be safe.
if ( ! mTooltipListenerInstalled )
return NS_OK;
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->Init(sTooltipCallback, this, kTooltipShowTime, NS_PRIORITY_HIGH);
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
ChromeListener :: ShowTooltip ( PRInt32 inXCoords, PRInt32 inYCoords, const nsAReadableString & 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, nsPromiseFlatString(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
ChromeListener :: 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
//
// FindTitleText
//
// Determine if there is a TITLE attribute. Checks both the XLINK namespace, and no
// namespace. Returns |PR_TRUE| if there is, and sets the text in |outText|.
//
PRBool
ChromeListener :: FindTitleText ( nsIDOMNode* inNode, nsAWritableString & outText )
{
PRBool found = PR_FALSE;
nsCOMPtr<nsIDOMNode> current ( inNode );
while ( !found && current ) {
nsCOMPtr<nsIDOMElement> currElement ( do_QueryInterface(current) );
if ( currElement ) {
// 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
return found;
} // FindTitleText
//
// 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 |aChromeListener| 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
ChromeListener :: sTooltipCallback (nsITimer *aTimer, void *aChromeListener)
{
ChromeListener* self = NS_STATIC_CAST(ChromeListener*, aChromeListener);
if ( self && self->mPossibleTooltipNode ) {
// if there is a TITLE tag, show the tip and fire off a timer to auto-hide it
nsAutoString tooltipText;
if ( self->FindTitleText(self->mPossibleTooltipNode, tooltipText) ) {
self->CreateAutoHideTimer ( );
self->ShowTooltip ( self->mMouseClientX, self->mMouseClientY, tooltipText );
}
// 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
ChromeListener :: CreateAutoHideTimer ( )
{
// just to be anal (er, safe)
if ( mAutoHideTimer ) {
mAutoHideTimer->Cancel();
mAutoHideTimer = nsnull;
}
mAutoHideTimer = do_CreateInstance("@mozilla.org/timer;1");
if ( mAutoHideTimer )
mAutoHideTimer->Init(sAutoHideCallback, this, kTooltipAutoHideTime, NS_PRIORITY_HIGH);
} // 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
ChromeListener :: sAutoHideCallback ( nsITimer *aTimer, void* aListener )
{
ChromeListener* self = NS_STATIC_CAST(ChromeListener*, aListener);
if ( self )
self->HideTooltip();
// NOTE: |aTimer| and |self->mAutoHideTimer| are invalid after calling ClosePopup();
} // sAutoHideCallback
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