new implementation for window enumerators, including new z-level enumerators. bug 96151 r=hyatt,sfraser
git-svn-id: svn://10.0.0.236/trunk@102227 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
danm%netscape.com
541
mozilla/xpfe/appshell/src/nsAppShellWindowEnumerator.cpp
Normal file
541
mozilla/xpfe/appshell/src/nsAppShellWindowEnumerator.cpp
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@@ -0,0 +1,541 @@
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 2001 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsIContentViewer.h"
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#include "nsIDocShell.h"
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#include "nsIDocumentViewer.h"
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#include "nsIDocument.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMWindow.h"
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#include "nsIDOMWindowInternal.h"
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#include "nsIFactory.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsIXULWindow.h"
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#include "nsAppShellWindowEnumerator.h"
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#include "nsWindowMediator.h"
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/********************************************************************/
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/************************ static helper functions *******************/
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/********************************************************************/
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static nsresult GetDOMWindow(nsIXULWindow* inWindow,
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nsCOMPtr<nsIDOMWindowInternal> &outDOMWindow);
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static nsCOMPtr<nsIDOMNode> GetDOMNodeFromDocShell(nsIDocShell *aShell);
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static void GetAttribute( nsIXULWindow* inWindow,
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const nsAutoString& inAttribute, nsAutoString& outValue);
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static void GetWindowType(nsIXULWindow* inWindow, nsString &outType);
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// fetch the nsIDOMWindow(Internal) from a XUL Window
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nsresult GetDOMWindow(nsIXULWindow *aWindow, nsCOMPtr<nsIDOMWindowInternal> &aDOMWindow)
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{
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nsCOMPtr<nsIDocShell> docShell;
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aWindow->GetDocShell(getter_AddRefs(docShell));
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aDOMWindow = do_GetInterface(docShell);
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return aDOMWindow ? NS_OK : NS_ERROR_FAILURE;
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}
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// QueryInterface fu
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nsCOMPtr<nsIDOMNode> GetDOMNodeFromDocShell(nsIDocShell *aShell)
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{
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nsCOMPtr<nsIDOMNode> node;
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nsCOMPtr<nsIContentViewer> cv;
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aShell->GetContentViewer(getter_AddRefs(cv));
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if (cv) {
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nsCOMPtr<nsIDocumentViewer> docv(do_QueryInterface(cv));
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if (docv) {
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nsCOMPtr<nsIDocument> doc;
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docv->GetDocument(*getter_AddRefs(doc));
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if (doc) {
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nsCOMPtr<nsIDOMDocument> domdoc(do_QueryInterface(doc));
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if (domdoc) {
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nsCOMPtr<nsIDOMElement> element;
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domdoc->GetDocumentElement(getter_AddRefs(element));
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if (element)
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node = do_QueryInterface(element);
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}
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}
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}
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}
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return node;
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}
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// generic "retrieve the value of a XUL attribute" function
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void GetAttribute(nsIXULWindow* aWindow, const nsAReadableString &anAttribute,
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nsAWritableString &outValue)
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{
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nsCOMPtr<nsIDocShell> shell;
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if (aWindow &&
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NS_SUCCEEDED(aWindow->GetDocShell(getter_AddRefs(shell)))) {
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nsCOMPtr<nsIDOMNode> node(GetDOMNodeFromDocShell(shell));
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if (node) {
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nsCOMPtr<nsIDOMElement> webshellElement(do_QueryInterface(node));
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if (webshellElement)
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webshellElement->GetAttribute(anAttribute, outValue);
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}
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}
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}
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// retrieve the window type, stored as the value of a particular
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// attribute in its XUL window tag
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void GetWindowType(nsIXULWindow* aWindow, nsString &outType)
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{
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GetAttribute(aWindow, NS_LITERAL_STRING("windowtype"), outType);
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}
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/********************************************************************/
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/**************************** nsWindowInfo **************************/
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/********************************************************************/
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nsWindowInfo::nsWindowInfo(nsIXULWindow* inWindow, PRInt32 inTimeStamp) :
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mWindow(inWindow),mTimeStamp(inTimeStamp)
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{
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ReferenceSelf(PR_TRUE, PR_TRUE);
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}
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nsWindowInfo::~nsWindowInfo()
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{
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}
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// return true if the window described by this WindowInfo has a type
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// equal to the given type
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PRBool nsWindowInfo::TypeEquals(nsAReadableString &aType)
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{
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nsAutoString rtnString;
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GetWindowType(mWindow, rtnString);
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return rtnString == aType;
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}
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// insert the struct into their two linked lists, in position after the
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// given (independent) method arguments
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void nsWindowInfo::InsertAfter(nsWindowInfo *inOlder , nsWindowInfo *inHigher) {
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if (inOlder) {
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mOlder = inOlder;
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mYounger = inOlder->mYounger;
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mOlder->mYounger = this;
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if (mOlder->mOlder == mOlder)
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mOlder->mOlder = this;
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mYounger->mOlder = this;
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if (mYounger->mYounger == mYounger)
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mYounger->mYounger = this;
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}
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if (inHigher) {
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mHigher = inHigher;
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mLower = inHigher->mLower;
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mHigher->mLower = this;
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if (mHigher->mHigher == mHigher)
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mHigher->mHigher = this;
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mLower->mHigher = this;
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if (mLower->mLower == mLower)
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mLower->mLower = this;
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}
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}
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// remove the struct from its linked lists
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void nsWindowInfo::Unlink(PRBool inAge, PRBool inZ) {
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if (inAge) {
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mOlder->mYounger = mYounger;
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mYounger->mOlder = mOlder;
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}
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if (inZ) {
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mLower->mHigher = mHigher;
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mHigher->mLower = mLower;
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}
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ReferenceSelf( inAge, inZ );
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}
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// initialize the struct to be a valid linked list of one element
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void nsWindowInfo::ReferenceSelf(PRBool inAge, PRBool inZ) {
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if (inAge) {
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mYounger = this;
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mOlder = this;
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}
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if (inZ) {
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mLower = this;
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mHigher = this;
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}
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}
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/********************************************************************/
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/*********************** nsAppShellWindowEnumerator *****************/
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/********************************************************************/
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NS_IMPL_ISUPPORTS1(nsAppShellWindowEnumerator, nsISimpleEnumerator);
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nsAppShellWindowEnumerator::nsAppShellWindowEnumerator (
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const PRUnichar* aTypeString,
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nsWindowMediator& aMediator) :
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mWindowMediator(&aMediator), mType(aTypeString),
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mCurrentPosition(0)
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{
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NS_INIT_REFCNT();
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mWindowMediator->AddEnumerator(this);
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mWindowMediator->AddRef();
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}
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nsAppShellWindowEnumerator::~nsAppShellWindowEnumerator() {
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mWindowMediator->RemoveEnumerator(this);
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mWindowMediator->Release();
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}
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// after mCurrentPosition has been initialized to point to the beginning
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// of the appropriate list, adjust it if necessary
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void nsAppShellWindowEnumerator::AdjustInitialPosition() {
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if (!mType.IsEmpty() && mCurrentPosition && !mCurrentPosition->TypeEquals(mType))
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mCurrentPosition = FindNext();
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}
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NS_IMETHODIMP nsAppShellWindowEnumerator::HasMoreElements(PRBool *retval)
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{
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if (!retval)
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return NS_ERROR_INVALID_ARG;
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*retval = mCurrentPosition ? PR_TRUE : PR_FALSE;
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return NS_OK;
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}
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// if a window is being removed adjust the iterator's current position
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void nsAppShellWindowEnumerator::WindowRemoved(nsWindowInfo *inInfo) {
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if (mCurrentPosition == inInfo)
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mCurrentPosition = FindNext();
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}
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/********************************************************************/
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/*********************** nsASDOMWindowEnumerator ********************/
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/********************************************************************/
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nsASDOMWindowEnumerator::nsASDOMWindowEnumerator(
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const PRUnichar* aTypeString,
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nsWindowMediator& aMediator) :
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nsAppShellWindowEnumerator(aTypeString, aMediator) {
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}
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nsASDOMWindowEnumerator::~nsASDOMWindowEnumerator() {
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}
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NS_IMETHODIMP nsASDOMWindowEnumerator::GetNext(nsISupports **retval) {
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if (!retval)
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return NS_ERROR_INVALID_ARG;
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*retval = NULL;
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if (mCurrentPosition) {
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nsCOMPtr<nsIDOMWindowInternal> domWindow;
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GetDOMWindow(mCurrentPosition->mWindow, domWindow);
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CallQueryInterface(domWindow, retval);
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mCurrentPosition = FindNext();
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}
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return NS_OK;
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};
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/********************************************************************/
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/*********************** nsASXULWindowEnumerator ********************/
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/********************************************************************/
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nsASXULWindowEnumerator::nsASXULWindowEnumerator(
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const PRUnichar* aTypeString,
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nsWindowMediator& aMediator) :
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nsAppShellWindowEnumerator(aTypeString, aMediator) {
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}
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nsASXULWindowEnumerator::~nsASXULWindowEnumerator() {
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}
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NS_IMETHODIMP nsASXULWindowEnumerator::GetNext(nsISupports **retval) {
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if (!retval)
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return NS_ERROR_INVALID_ARG;
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*retval = NULL;
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if (mCurrentPosition) {
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CallQueryInterface(mCurrentPosition->mWindow, retval);
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mCurrentPosition = FindNext();
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}
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return NS_OK;
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};
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/********************************************************************/
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/****************** nsASDOMWindowEarlyToLateEnumerator **************/
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/********************************************************************/
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nsASDOMWindowEarlyToLateEnumerator::nsASDOMWindowEarlyToLateEnumerator(
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const PRUnichar *aTypeString,
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nsWindowMediator &aMediator) :
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nsASDOMWindowEnumerator(aTypeString, aMediator) {
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mCurrentPosition = aMediator.mOldestWindow;
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AdjustInitialPosition();
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}
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nsASDOMWindowEarlyToLateEnumerator::~nsASDOMWindowEarlyToLateEnumerator() {
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}
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nsWindowInfo *nsASDOMWindowEarlyToLateEnumerator::FindNext() {
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nsWindowInfo *info,
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*listEnd;
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PRBool allWindows = mType.Length() == 0;
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// see nsXULWindowEarlyToLateEnumerator::FindNext
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if (!mCurrentPosition)
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return 0;
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info = mCurrentPosition->mYounger;
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listEnd = mWindowMediator->mOldestWindow;
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while (info != listEnd) {
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if (allWindows || info->TypeEquals(mType))
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return info;
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info = info->mYounger;
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}
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return 0;
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}
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/********************************************************************/
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/****************** nsASXULWindowEarlyToLateEnumerator **************/
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/********************************************************************/
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nsASXULWindowEarlyToLateEnumerator::nsASXULWindowEarlyToLateEnumerator(
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const PRUnichar *aTypeString,
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nsWindowMediator &aMediator) :
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nsASXULWindowEnumerator(aTypeString, aMediator) {
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mCurrentPosition = aMediator.mOldestWindow;
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AdjustInitialPosition();
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}
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nsASXULWindowEarlyToLateEnumerator::~nsASXULWindowEarlyToLateEnumerator() {
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}
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nsWindowInfo *nsASXULWindowEarlyToLateEnumerator::FindNext() {
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nsWindowInfo *info,
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*listEnd;
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PRBool allWindows = mType.Length() == 0;
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/* mCurrentPosition null is assumed to mean that the enumerator has run
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its course and is now basically useless. It could also be interpreted
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to mean that it was created at a time when there were no windows. In
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that case it would probably be more appropriate to check to see whether
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windows have subsequently been added. But it's not guaranteed that we'll
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pick up newly added windows anyway (if they occurred previous to our
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current position) so we just don't worry about that. */
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if (!mCurrentPosition)
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return 0;
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info = mCurrentPosition->mYounger;
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listEnd = mWindowMediator->mOldestWindow;
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while (info != listEnd) {
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if (allWindows || info->TypeEquals(mType))
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return info;
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info = info->mYounger;
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}
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return 0;
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}
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/********************************************************************/
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/****************** nsASDOMWindowFrontToBackEnumerator **************/
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/********************************************************************/
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nsASDOMWindowFrontToBackEnumerator::nsASDOMWindowFrontToBackEnumerator(
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const PRUnichar *aTypeString,
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nsWindowMediator &aMediator) :
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nsASDOMWindowEnumerator(aTypeString, aMediator) {
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mCurrentPosition = aMediator.mTopmostWindow;
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AdjustInitialPosition();
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}
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nsASDOMWindowFrontToBackEnumerator::~nsASDOMWindowFrontToBackEnumerator() {
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}
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nsWindowInfo *nsASDOMWindowFrontToBackEnumerator::FindNext() {
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nsWindowInfo *info,
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*listEnd;
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PRBool allWindows = mType.Length() == 0;
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// see nsXULWindowEarlyToLateEnumerator::FindNext
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if (!mCurrentPosition)
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return 0;
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info = mCurrentPosition->mLower;
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listEnd = mWindowMediator->mTopmostWindow;
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while (info != listEnd) {
|
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if (allWindows || info->TypeEquals(mType))
|
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return info;
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||||
info = info->mLower;
|
||||
}
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||||
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||||
return 0;
|
||||
}
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||||
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/********************************************************************/
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/****************** nsASXULWindowFrontToBackEnumerator **************/
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||||
/********************************************************************/
|
||||
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||||
nsASXULWindowFrontToBackEnumerator::nsASXULWindowFrontToBackEnumerator(
|
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const PRUnichar *aTypeString,
|
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nsWindowMediator &aMediator) :
|
||||
|
||||
nsASXULWindowEnumerator(aTypeString, aMediator) {
|
||||
|
||||
mCurrentPosition = aMediator.mTopmostWindow;
|
||||
AdjustInitialPosition();
|
||||
}
|
||||
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||||
nsASXULWindowFrontToBackEnumerator::~nsASXULWindowFrontToBackEnumerator()
|
||||
{
|
||||
}
|
||||
|
||||
nsWindowInfo *nsASXULWindowFrontToBackEnumerator::FindNext() {
|
||||
|
||||
nsWindowInfo *info,
|
||||
*listEnd;
|
||||
PRBool allWindows = mType.Length() == 0;
|
||||
|
||||
// see nsXULWindowEarlyToLateEnumerator::FindNext
|
||||
if (!mCurrentPosition)
|
||||
return 0;
|
||||
|
||||
info = mCurrentPosition->mLower;
|
||||
listEnd = mWindowMediator->mTopmostWindow;
|
||||
|
||||
while (info != listEnd) {
|
||||
if (allWindows || info->TypeEquals(mType))
|
||||
return info;
|
||||
info = info->mLower;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/********************************************************************/
|
||||
/****************** nsASDOMWindowBackToFrontEnumerator **************/
|
||||
/********************************************************************/
|
||||
|
||||
nsASDOMWindowBackToFrontEnumerator::nsASDOMWindowBackToFrontEnumerator(
|
||||
const PRUnichar *aTypeString,
|
||||
nsWindowMediator &aMediator) :
|
||||
|
||||
nsASDOMWindowEnumerator(aTypeString, aMediator) {
|
||||
|
||||
mCurrentPosition = aMediator.mTopmostWindow ?
|
||||
aMediator.mTopmostWindow->mHigher : 0;
|
||||
AdjustInitialPosition();
|
||||
}
|
||||
|
||||
nsASDOMWindowBackToFrontEnumerator::~nsASDOMWindowBackToFrontEnumerator() {
|
||||
}
|
||||
|
||||
nsWindowInfo *nsASDOMWindowBackToFrontEnumerator::FindNext() {
|
||||
|
||||
nsWindowInfo *info,
|
||||
*listEnd;
|
||||
PRBool allWindows = mType.Length() == 0;
|
||||
|
||||
// see nsXULWindowEarlyToLateEnumerator::FindNext
|
||||
if (!mCurrentPosition)
|
||||
return 0;
|
||||
|
||||
info = mCurrentPosition->mHigher;
|
||||
listEnd = mWindowMediator->mTopmostWindow;
|
||||
if (listEnd)
|
||||
listEnd = listEnd->mHigher;
|
||||
|
||||
while (info != listEnd) {
|
||||
if (allWindows || info->TypeEquals(mType))
|
||||
return info;
|
||||
info = info->mHigher;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/********************************************************************/
|
||||
/****************** nsASXULWindowBackToFrontEnumerator **************/
|
||||
/********************************************************************/
|
||||
|
||||
nsASXULWindowBackToFrontEnumerator::nsASXULWindowBackToFrontEnumerator(
|
||||
const PRUnichar *aTypeString,
|
||||
nsWindowMediator &aMediator) :
|
||||
|
||||
nsASXULWindowEnumerator(aTypeString, aMediator) {
|
||||
|
||||
mCurrentPosition = aMediator.mTopmostWindow ?
|
||||
aMediator.mTopmostWindow->mHigher : 0;
|
||||
AdjustInitialPosition();
|
||||
}
|
||||
|
||||
nsASXULWindowBackToFrontEnumerator::~nsASXULWindowBackToFrontEnumerator()
|
||||
{
|
||||
}
|
||||
|
||||
nsWindowInfo *nsASXULWindowBackToFrontEnumerator::FindNext() {
|
||||
|
||||
nsWindowInfo *info,
|
||||
*listEnd;
|
||||
PRBool allWindows = mType.Length() == 0;
|
||||
|
||||
// see nsXULWindowEarlyToLateEnumerator::FindNext
|
||||
if (!mCurrentPosition)
|
||||
return 0;
|
||||
|
||||
info = mCurrentPosition->mHigher;
|
||||
listEnd = mWindowMediator->mTopmostWindow;
|
||||
if (listEnd)
|
||||
listEnd = listEnd->mHigher;
|
||||
|
||||
while (info != listEnd) {
|
||||
if (allWindows || info->TypeEquals(mType))
|
||||
return info;
|
||||
info = info->mHigher;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user