зеркало из https://github.com/mozilla/pjs.git
698 строки
20 KiB
C++
698 строки
20 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 sw=2 et tw=80: */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* 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
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsPIDOMWindow_h__
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#define nsPIDOMWindow_h__
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#include "nsISupports.h"
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#include "nsIDOMLocation.h"
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#include "nsIDOMXULCommandDispatcher.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMWindowInternal.h"
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#include "nsPIDOMEventTarget.h"
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#include "nsIDOMDocument.h"
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#include "nsCOMPtr.h"
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#include "nsEvent.h"
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#define DOM_WINDOW_DESTROYED_TOPIC "dom-window-destroyed"
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class nsIPrincipal;
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// Popup control state enum. The values in this enum must go from most
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// permissive to least permissive so that it's safe to push state in
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// all situations. Pushing popup state onto the stack never makes the
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// current popup state less permissive (see
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// nsGlobalWindow::PushPopupControlState()).
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enum PopupControlState {
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openAllowed = 0, // open that window without worries
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openControlled, // it's a popup, but allow it
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openAbused, // it's a popup. disallow it, but allow domain override.
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openOverridden // disallow window open
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};
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class nsIDocShell;
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class nsIContent;
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class nsIDocument;
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class nsIScriptTimeoutHandler;
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struct nsTimeout;
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class nsScriptObjectHolder;
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class nsXBLPrototypeHandler;
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class nsIArray;
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class nsPIWindowRoot;
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#define NS_PIDOMWINDOW_IID \
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{ 0x8d8be7db, 0xffaa, 0x4962, \
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{ 0xa7, 0x27, 0xb7, 0x0f, 0xc9, 0xfa, 0xd3, 0x0e } }
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class nsPIDOMWindow : public nsIDOMWindowInternal
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{
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_PIDOMWINDOW_IID)
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virtual nsPIDOMWindow* GetPrivateRoot() = 0;
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virtual void ActivateOrDeactivate(PRBool aActivate) = 0;
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// this is called GetTopWindowRoot to avoid conflicts with nsIDOMWindow2::GetWindowRoot
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virtual already_AddRefed<nsPIWindowRoot> GetTopWindowRoot() = 0;
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virtual void SetActive(PRBool aActive)
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{
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mIsActive = aActive;
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}
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PRBool IsActive()
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{
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return mIsActive;
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}
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nsPIDOMEventTarget* GetChromeEventHandler() const
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{
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return mChromeEventHandler;
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}
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virtual void SetChromeEventHandler(nsPIDOMEventTarget* aChromeEventHandler) = 0;
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nsPIDOMEventTarget* GetParentTarget()
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{
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if (!mParentTarget) {
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UpdateParentTarget();
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}
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return mParentTarget;
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}
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PRBool HasMutationListeners(PRUint32 aMutationEventType) const
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{
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const nsPIDOMWindow *win;
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if (IsOuterWindow()) {
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win = GetCurrentInnerWindow();
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if (!win) {
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NS_ERROR("No current inner window available!");
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return PR_FALSE;
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}
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} else {
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if (!mOuterWindow) {
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NS_ERROR("HasMutationListeners() called on orphan inner window!");
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return PR_FALSE;
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}
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win = this;
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}
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return (win->mMutationBits & aMutationEventType) != 0;
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}
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void SetMutationListeners(PRUint32 aType)
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{
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nsPIDOMWindow *win;
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if (IsOuterWindow()) {
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win = GetCurrentInnerWindow();
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if (!win) {
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NS_ERROR("No inner window available to set mutation bits on!");
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return;
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}
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} else {
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if (!mOuterWindow) {
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NS_ERROR("HasMutationListeners() called on orphan inner window!");
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return;
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}
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win = this;
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}
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win->mMutationBits |= aType;
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}
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virtual void MaybeUpdateTouchState() {}
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virtual void UpdateTouchState() {}
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// GetExtantDocument provides a backdoor to the DOM GetDocument accessor
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nsIDOMDocument* GetExtantDocument() const
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{
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return mDocument;
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}
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// Internal getter/setter for the frame element, this version of the
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// getter crosses chrome boundaries whereas the public scriptable
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// one doesn't for security reasons.
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nsIDOMElement* GetFrameElementInternal() const
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{
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if (mOuterWindow) {
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return mOuterWindow->GetFrameElementInternal();
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}
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NS_ASSERTION(!IsInnerWindow(),
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"GetFrameElementInternal() called on orphan inner window");
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return mFrameElement;
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}
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void SetFrameElementInternal(nsIDOMElement *aFrameElement)
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{
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if (IsOuterWindow()) {
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mFrameElement = aFrameElement;
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return;
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}
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if (!mOuterWindow) {
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NS_ERROR("frameElement set on inner window with no outer!");
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return;
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}
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mOuterWindow->SetFrameElementInternal(aFrameElement);
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}
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PRBool IsLoadingOrRunningTimeout() const
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{
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const nsPIDOMWindow *win = GetCurrentInnerWindow();
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if (!win) {
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win = this;
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}
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return !win->mIsDocumentLoaded || win->mRunningTimeout;
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}
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// Check whether a document is currently loading
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PRBool IsLoading() const
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{
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const nsPIDOMWindow *win;
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if (IsOuterWindow()) {
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win = GetCurrentInnerWindow();
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if (!win) {
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NS_ERROR("No current inner window available!");
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return PR_FALSE;
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}
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} else {
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if (!mOuterWindow) {
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NS_ERROR("IsLoading() called on orphan inner window!");
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return PR_FALSE;
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}
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win = this;
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}
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return !win->mIsDocumentLoaded;
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}
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PRBool IsHandlingResizeEvent() const
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{
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const nsPIDOMWindow *win;
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if (IsOuterWindow()) {
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win = GetCurrentInnerWindow();
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if (!win) {
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NS_ERROR("No current inner window available!");
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return PR_FALSE;
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}
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} else {
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if (!mOuterWindow) {
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NS_ERROR("IsHandlingResizeEvent() called on orphan inner window!");
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return PR_FALSE;
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}
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win = this;
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}
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return win->mIsHandlingResizeEvent;
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}
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// Tell this window who opened it. This only has an effect if there is
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// either no document currently in the window or if the document is the
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// original document this window came with (an about:blank document either
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// preloaded into it when it was created, or created by
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// CreateAboutBlankContentViewer()).
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virtual void SetOpenerScriptPrincipal(nsIPrincipal* aPrincipal) = 0;
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// Ask this window who opened it.
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virtual nsIPrincipal* GetOpenerScriptPrincipal() = 0;
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virtual PopupControlState PushPopupControlState(PopupControlState aState,
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PRBool aForce) const = 0;
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virtual void PopPopupControlState(PopupControlState state) const = 0;
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virtual PopupControlState GetPopupControlState() const = 0;
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// Returns an object containing the window's state. This also suspends
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// all running timeouts in the window.
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virtual nsresult SaveWindowState(nsISupports **aState) = 0;
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// Restore the window state from aState.
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virtual nsresult RestoreWindowState(nsISupports *aState) = 0;
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// Suspend timeouts in this window and in child windows.
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virtual void SuspendTimeouts(PRUint32 aIncrease = 1,
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PRBool aFreezeChildren = PR_TRUE) = 0;
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// Resume suspended timeouts in this window and in child windows.
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virtual nsresult ResumeTimeouts(PRBool aThawChildren = PR_TRUE) = 0;
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virtual PRUint32 TimeoutSuspendCount() = 0;
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// Fire any DOM notification events related to things that happened while
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// the window was frozen.
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virtual nsresult FireDelayedDOMEvents() = 0;
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virtual PRBool IsFrozen() const = 0;
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// Add a timeout to this window.
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virtual nsresult SetTimeoutOrInterval(nsIScriptTimeoutHandler *aHandler,
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PRInt32 interval,
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PRBool aIsInterval, PRInt32 *aReturn) = 0;
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// Clear a timeout from this window.
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virtual nsresult ClearTimeoutOrInterval(PRInt32 aTimerID) = 0;
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nsPIDOMWindow *GetOuterWindow()
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{
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return mIsInnerWindow ? mOuterWindow.get() : this;
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}
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nsPIDOMWindow *GetCurrentInnerWindow() const
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{
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return mInnerWindow;
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}
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nsPIDOMWindow *EnsureInnerWindow()
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{
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NS_ASSERTION(IsOuterWindow(), "EnsureInnerWindow called on inner window");
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// GetDocument forces inner window creation if there isn't one already
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nsCOMPtr<nsIDOMDocument> doc;
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GetDocument(getter_AddRefs(doc));
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return GetCurrentInnerWindow();
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}
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PRBool IsInnerWindow() const
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{
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return mIsInnerWindow;
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}
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PRBool IsOuterWindow() const
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{
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return !IsInnerWindow();
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}
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virtual PRBool WouldReuseInnerWindow(nsIDocument *aNewDocument) = 0;
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/**
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* Get the docshell in this window.
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*/
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nsIDocShell *GetDocShell()
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{
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if (mOuterWindow) {
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return mOuterWindow->mDocShell;
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}
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return mDocShell;
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}
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/**
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* Set or unset the docshell in the window.
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*/
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virtual void SetDocShell(nsIDocShell *aDocShell) = 0;
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/**
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* Set a new document in the window. Calling this method will in
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* most cases create a new inner window. If this method is called on
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* an inner window the call will be forewarded to the outer window,
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* if the inner window is not the current inner window an
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* NS_ERROR_NOT_AVAILABLE error code will be returned. This may be
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* called with a pointer to the current document, in that case the
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* document remains unchanged, but a new inner window will be
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* created.
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*/
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virtual nsresult SetNewDocument(nsIDocument *aDocument,
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nsISupports *aState,
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PRBool aForceReuseInnerWindow) = 0;
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/**
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* Set the opener window. aOriginalOpener is true if and only if this is the
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* original opener for the window. That is, it can only be true at most once
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* during the life cycle of a window, and then only the first time
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* SetOpenerWindow is called. It might never be true, of course, if the
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* window does not have an opener when it's created.
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*/
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virtual void SetOpenerWindow(nsIDOMWindowInternal *aOpener,
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PRBool aOriginalOpener) = 0;
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virtual void EnsureSizeUpToDate() = 0;
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/**
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* Callback for notifying a window about a modal dialog being
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* opened/closed with the window as a parent.
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*/
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virtual nsIDOMWindow *EnterModalState() = 0;
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virtual void LeaveModalState(nsIDOMWindow *) = 0;
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virtual PRBool CanClose() = 0;
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virtual nsresult ForceClose() = 0;
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PRBool IsModalContentWindow() const
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{
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return mIsModalContentWindow;
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}
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/**
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* Call this to indicate that some node (this window, its document,
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* or content in that document) has a paint event listener.
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*/
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void SetHasPaintEventListeners()
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{
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mMayHavePaintEventListener = PR_TRUE;
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}
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/**
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* Call this to check whether some node (this window, its document,
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* or content in that document) has a paint event listener.
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*/
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PRBool HasPaintEventListeners()
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{
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return mMayHavePaintEventListener;
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}
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/**
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* Call this to indicate that some node (this window, its document,
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* or content in that document) has a touch event listener.
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*/
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void SetHasTouchEventListeners()
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{
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mMayHaveTouchEventListener = PR_TRUE;
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MaybeUpdateTouchState();
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}
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/**
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* Call this to check whether some node (this window, its document,
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* or content in that document) has a MozAudioAvailable event listener.
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*/
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PRBool HasAudioAvailableEventListeners()
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{
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return mMayHaveAudioAvailableEventListener;
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}
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/**
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* Call this to indicate that some node (this window, its document,
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* or content in that document) has a MozAudioAvailable event listener.
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*/
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void SetHasAudioAvailableEventListeners()
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{
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mMayHaveAudioAvailableEventListener = PR_TRUE;
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}
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/**
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* Initialize window.java and window.Packages.
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*/
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virtual void InitJavaProperties() = 0;
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virtual void* GetCachedXBLPrototypeHandler(nsXBLPrototypeHandler* aKey) = 0;
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virtual void CacheXBLPrototypeHandler(nsXBLPrototypeHandler* aKey,
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nsScriptObjectHolder& aHandler) = 0;
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/*
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* Get and set the currently focused element within the document. If
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* aNeedsFocus is true, then set mNeedsFocus to true to indicate that a
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* document focus event is needed.
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*
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* DO NOT CALL EITHER OF THESE METHODS DIRECTLY. USE THE FOCUS MANAGER
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* INSTEAD.
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*/
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nsIContent* GetFocusedNode()
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{
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if (IsOuterWindow()) {
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return mInnerWindow ? mInnerWindow->mFocusedNode.get() : nsnull;
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}
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return mFocusedNode;
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}
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virtual void SetFocusedNode(nsIContent* aNode,
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PRUint32 aFocusMethod = 0,
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PRBool aNeedsFocus = PR_FALSE) = 0;
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/**
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* Retrieves the method that was used to focus the current node.
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*/
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virtual PRUint32 GetFocusMethod() = 0;
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/*
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* Tells the window that it now has focus or has lost focus, based on the
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* state of aFocus. If this method returns true, then the document loaded
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* in the window has never received a focus event and expects to receive
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* one. If false is returned, the document has received a focus event before
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* and should only receive one if the window is being focused.
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*
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* aFocusMethod may be set to one of the focus method constants in
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* nsIFocusManager to indicate how focus was set.
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*/
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virtual PRBool TakeFocus(PRBool aFocus, PRUint32 aFocusMethod) = 0;
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/**
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* Indicates that the window may now accept a document focus event. This
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* should be called once a document has been loaded into the window.
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*/
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virtual void SetReadyForFocus() = 0;
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/**
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* Whether the focused content within the window should show a focus ring.
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*/
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virtual PRBool ShouldShowFocusRing() = 0;
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/**
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* Set the keyboard indicator state for accelerators and focus rings.
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*/
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virtual void SetKeyboardIndicators(UIStateChangeType aShowAccelerators,
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UIStateChangeType aShowFocusRings) = 0;
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/**
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* Get the keyboard indicator state for accelerators and focus rings.
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*/
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virtual void GetKeyboardIndicators(PRBool* aShowAccelerators,
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PRBool* aShowFocusRings) = 0;
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/**
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* Indicates that the page in the window has been hidden. This is used to
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* reset the focus state.
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*/
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virtual void PageHidden() = 0;
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/**
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* Instructs this window to asynchronously dispatch a hashchange event. This
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* method must be called on an inner window.
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*/
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virtual nsresult DispatchAsyncHashchange() = 0;
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/**
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* Instructs this window to synchronously dispatch a popState event.
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* aIsInitial should be true if the event corresponds to a popState fired
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* immediately after onload and false otherwise.
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*/
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virtual nsresult DispatchSyncPopState(PRBool aIsInitial) = 0;
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/**
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* Tell this window that there is an observer for orientation changes
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*/
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virtual void SetHasOrientationEventListener() = 0;
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/**
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* Set a arguments for this window. This will be set on the window
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* right away (if there's an existing document) and it will also be
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* installed on the window when the next document is loaded. Each
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* language impl is responsible for converting to an array of args
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* as appropriate for that language.
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*/
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virtual nsresult SetArguments(nsIArray *aArguments, nsIPrincipal *aOrigin) = 0;
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/**
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* NOTE! This function *will* be called on multiple threads so the
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* implementation must not do any AddRef/Release or other actions that will
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* mutate internal state.
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*/
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virtual PRUint32 GetSerial() = 0;
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/**
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* Return the window id of this window
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*/
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PRUint64 WindowID() const { return mWindowID; }
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protected:
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// The nsPIDOMWindow constructor. The aOuterWindow argument should
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// be null if and only if the created window itself is an outer
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// window. In all other cases aOuterWindow should be the outer
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// window for the inner window that is being created.
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nsPIDOMWindow(nsPIDOMWindow *aOuterWindow);
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~nsPIDOMWindow();
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void SetChromeEventHandlerInternal(nsPIDOMEventTarget* aChromeEventHandler) {
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mChromeEventHandler = aChromeEventHandler;
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// mParentTarget will be set when the next event is dispatched.
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mParentTarget = nsnull;
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}
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virtual void UpdateParentTarget() = 0;
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// These two variables are special in that they're set to the same
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// value on both the outer window and the current inner window. Make
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// sure you keep them in sync!
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nsCOMPtr<nsPIDOMEventTarget> mChromeEventHandler; // strong
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nsCOMPtr<nsIDOMDocument> mDocument; // strong
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nsCOMPtr<nsPIDOMEventTarget> mParentTarget; // strong
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// These members are only used on outer windows.
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nsCOMPtr<nsIDOMElement> mFrameElement;
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nsIDocShell *mDocShell; // Weak Reference
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PRUint32 mModalStateDepth;
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// These variables are only used on inner windows.
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nsTimeout *mRunningTimeout;
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PRUint32 mMutationBits;
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PRPackedBool mIsDocumentLoaded;
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PRPackedBool mIsHandlingResizeEvent;
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PRPackedBool mIsInnerWindow;
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PRPackedBool mMayHavePaintEventListener;
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PRPackedBool mMayHaveTouchEventListener;
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PRPackedBool mMayHaveAudioAvailableEventListener;
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// This variable is used on both inner and outer windows (and they
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// should match).
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PRPackedBool mIsModalContentWindow;
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// Tracks activation state that's used for :-moz-window-inactive.
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PRPackedBool mIsActive;
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// And these are the references between inner and outer windows.
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nsPIDOMWindow *mInnerWindow;
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nsCOMPtr<nsPIDOMWindow> mOuterWindow;
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// the element within the document that is currently focused when this
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// window is active
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nsCOMPtr<nsIContent> mFocusedNode;
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// A unique (as long as our 64-bit counter doesn't roll over) id for
|
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// this window.
|
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PRUint64 mWindowID;
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// This is only used by the inner window. Set to true once we've sent
|
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// the (chrome|content)-document-global-created notification.
|
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PRPackedBool mHasNotifiedGlobalCreated;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsPIDOMWindow, NS_PIDOMWINDOW_IID)
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#ifdef _IMPL_NS_LAYOUT
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PopupControlState
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PushPopupControlState(PopupControlState aState, PRBool aForce);
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void
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PopPopupControlState(PopupControlState aState);
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#define NS_AUTO_POPUP_STATE_PUSHER nsAutoPopupStatePusherInternal
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#else
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#define NS_AUTO_POPUP_STATE_PUSHER nsAutoPopupStatePusherExternal
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#endif
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// Helper class that helps with pushing and popping popup control
|
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// state. Note that this class looks different from within code that's
|
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// part of the layout library than it does in code outside the layout
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// library. We give the two object layouts different names so the symbols
|
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// don't conflict, but code should always use the name
|
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// |nsAutoPopupStatePusher|.
|
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class NS_AUTO_POPUP_STATE_PUSHER
|
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{
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public:
|
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#ifdef _IMPL_NS_LAYOUT
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NS_AUTO_POPUP_STATE_PUSHER(PopupControlState aState, PRBool aForce = PR_FALSE)
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: mOldState(::PushPopupControlState(aState, aForce))
|
|
{
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}
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~NS_AUTO_POPUP_STATE_PUSHER()
|
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{
|
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PopPopupControlState(mOldState);
|
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}
|
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#else
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NS_AUTO_POPUP_STATE_PUSHER(nsPIDOMWindow *aWindow, PopupControlState aState)
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: mWindow(aWindow), mOldState(openAbused)
|
|
{
|
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if (aWindow) {
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mOldState = aWindow->PushPopupControlState(aState, PR_FALSE);
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}
|
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}
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~NS_AUTO_POPUP_STATE_PUSHER()
|
|
{
|
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if (mWindow) {
|
|
mWindow->PopPopupControlState(mOldState);
|
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}
|
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}
|
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#endif
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protected:
|
|
#ifndef _IMPL_NS_LAYOUT
|
|
nsCOMPtr<nsPIDOMWindow> mWindow;
|
|
#endif
|
|
PopupControlState mOldState;
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|
|
|
private:
|
|
// Hide so that this class can only be stack-allocated
|
|
static void* operator new(size_t /*size*/) CPP_THROW_NEW { return nsnull; }
|
|
static void operator delete(void* /*memory*/) {}
|
|
};
|
|
|
|
#define nsAutoPopupStatePusher NS_AUTO_POPUP_STATE_PUSHER
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|
|
|
#endif // nsPIDOMWindow_h__
|