зеркало из https://github.com/mozilla/gecko-dev.git
678 строки
21 KiB
C++
678 строки
21 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 nsIDocument_h___
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#define nsIDocument_h___
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#include "nsISupports.h"
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#include "nsEvent.h"
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#include "nsString.h"
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#include "nsChangeHint.h"
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#include "nsCOMArray.h"
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#include "nsIDocumentObserver.h"
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#include "nsCOMPtr.h"
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#include "nsIURI.h"
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#include "nsIBindingManager.h"
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#include "nsINodeInfo.h"
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#include "nsWeakPtr.h"
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#include "nsIWeakReferenceUtils.h"
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#include "nsILoadGroup.h"
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#include "nsReadableUtils.h"
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#include "nsCRT.h"
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#include "mozFlushType.h"
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class nsIAtom;
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class nsIContent;
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class nsIPresContext;
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class nsIPresShell;
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class nsIStreamListener;
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class nsIStreamObserver;
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class nsStyleSet;
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class nsIStyleSheet;
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class nsIStyleRule;
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class nsIViewManager;
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class nsIScriptGlobalObject;
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class nsIDOMEvent;
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class nsIDeviceContext;
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class nsIParser;
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class nsIDOMNode;
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class nsIDOMDocumentFragment;
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class nsILineBreaker;
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class nsIWordBreaker;
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class nsISelection;
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class nsIChannel;
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class nsIPrincipal;
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class nsIDOMDocument;
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class nsIDOMDocumentType;
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class nsIObserver;
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class nsISupportsArray;
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class nsIScriptLoader;
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class nsIContentSink;
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class nsIScriptEventManager;
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class nsICSSLoader;
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class nsHTMLStyleSheet;
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class nsIHTMLCSSStyleSheet;
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// IID for the nsIDocument interface
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#define NS_IDOCUMENT_IID \
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{ 0xa492d7cf, 0x1777, 0x4c7a, \
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{0xaa, 0x8f, 0x94, 0x08, 0x28, 0x05, 0x55, 0xc9} }
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// The base value for the content ID counter.
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// This counter is used by the document to
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// assign a monotonically increasing ID to each content
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// object it creates
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#define NS_CONTENT_ID_COUNTER_BASE 10000
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// Flag for AddStyleSheet().
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#define NS_STYLESHEET_FROM_CATALOG (1 << 0)
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//----------------------------------------------------------------------
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// Document interface
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class nsIDocument : public nsISupports
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{
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public:
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NS_DEFINE_STATIC_IID_ACCESSOR(NS_IDOCUMENT_IID)
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NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
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nsIDocument()
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: mCharacterSet(NS_LITERAL_CSTRING("ISO-8859-1")),
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mNextContentID(NS_CONTENT_ID_COUNTER_BASE) { }
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virtual ~nsIDocument() { }
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virtual nsresult StartDocumentLoad(const char* aCommand,
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nsIChannel* aChannel,
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nsILoadGroup* aLoadGroup,
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nsISupports* aContainer,
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nsIStreamListener **aDocListener,
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PRBool aReset,
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nsIContentSink* aSink = nsnull) = 0;
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virtual void StopDocumentLoad() = 0;
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/**
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* Return the title of the document. May return null.
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*/
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const nsAFlatString& GetDocumentTitle() const
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{
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return mDocumentTitle;
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}
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/**
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* Return the URI for the document. May return null.
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*/
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nsIURI* GetDocumentURI() const
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{
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return mDocumentURI;
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}
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void SetDocumentURI(nsIURI* aURI)
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{
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mDocumentURI = aURI;
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}
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/**
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* Return the principal responsible for this document.
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*/
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virtual nsIPrincipal* GetPrincipal() = 0;
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/**
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* Set the principal responsible for this document.
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*/
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virtual void SetPrincipal(nsIPrincipal *aPrincipal) = 0;
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/**
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* Return the LoadGroup for the document. May return null.
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*/
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already_AddRefed<nsILoadGroup> GetDocumentLoadGroup() const
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{
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nsILoadGroup *group = nsnull;
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if (mDocumentLoadGroup)
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CallQueryReferent(mDocumentLoadGroup.get(), &group);
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return group;
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}
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/**
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* Return the base URI for relative URIs in the document (the document uri
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* unless it's overridden by SetBaseURI, HTML <base> tags, etc.). The
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* returned URI could be null if there is no document URI.
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*/
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nsIURI* GetBaseURI() const
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{
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return mDocumentBaseURI ? mDocumentBaseURI : mDocumentURI;
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}
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virtual nsresult SetBaseURI(nsIURI* aURI) = 0;
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/**
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* Get/Set the base target of a link in a document.
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*/
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virtual void GetBaseTarget(nsAString &aBaseTarget) const = 0;
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virtual void SetBaseTarget(const nsAString &aBaseTarget) = 0;
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/**
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* Return a standard name for the document's character set. This
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* will trigger a startDocumentLoad if necessary to answer the
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* question.
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*/
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const nsAFlatCString& GetDocumentCharacterSet() const
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{
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return mCharacterSet;
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}
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/**
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* Set the document's character encoding. |aCharSetID| should be canonical.
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* That is, callers are responsible for the charset alias resolution.
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*/
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virtual void SetDocumentCharacterSet(const nsACString& aCharSetID) = 0;
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PRInt32 GetDocumentCharacterSetSource() const
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{
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return mCharacterSetSource;
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}
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void SetDocumentCharacterSetSource(PRInt32 aCharsetSource)
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{
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mCharacterSetSource = aCharsetSource;
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}
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/**
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* Add an observer that gets notified whenever the charset changes.
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*/
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virtual nsresult AddCharSetObserver(nsIObserver* aObserver) = 0;
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/**
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* Remove a charset observer.
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*/
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virtual void RemoveCharSetObserver(nsIObserver* aObserver) = 0;
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/**
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* Get the Content-Type of this document.
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* (This will always return NS_OK, but has this signature to be compatible
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* with nsIDOMNSDocument::GetContentType())
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*/
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NS_IMETHOD GetContentType(nsAString& aContentType) = 0;
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/**
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* Set the Content-Type of this document.
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*/
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virtual void SetContentType(const nsAString& aContentType) = 0;
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/**
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* Return the language of this document.
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*/
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void GetContentLanguage(nsAString& aContentLanguage) const
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{
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CopyASCIItoUCS2(mContentLanguage, aContentLanguage);
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}
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// The state BidiEnabled should persist across multiple views
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// (screen, print) of the same document.
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/**
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* Check if the document contains bidi data.
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* If so, we have to apply the Unicode Bidi Algorithm.
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*/
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PRBool GetBidiEnabled() const
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{
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return mBidiEnabled;
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}
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/**
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* Indicate the document contains bidi data.
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* Currently, we cannot disable bidi, because once bidi is enabled,
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* it affects a frame model irreversibly, and plays even though
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* the document no longer contains bidi data.
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*/
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void SetBidiEnabled(PRBool aBidiEnabled)
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{
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mBidiEnabled = aBidiEnabled;
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}
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/**
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* Return the Line Breaker for the document
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*/
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virtual nsILineBreaker* GetLineBreaker() = 0;
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virtual void SetLineBreaker(nsILineBreaker* aLineBreaker) = 0;
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virtual nsIWordBreaker* GetWordBreaker() = 0;
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virtual void SetWordBreaker(nsIWordBreaker* aWordBreaker) = 0;
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/**
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* Access HTTP header data (this may also get set from other
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* sources, like HTML META tags).
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*/
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virtual void GetHeaderData(nsIAtom* aHeaderField, nsAString& aData) const = 0;
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virtual void SetHeaderData(nsIAtom* aheaderField, const nsAString& aData) = 0;
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/**
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* Create a new presentation shell that will use aContext for its
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* presentation context (presentation contexts <b>must not</b> be
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* shared among multiple presentation shells).
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*/
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virtual nsresult CreateShell(nsIPresContext* aContext,
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nsIViewManager* aViewManager,
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nsStyleSet* aStyleSet,
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nsIPresShell** aInstancePtrResult) = 0;
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virtual PRBool DeleteShell(nsIPresShell* aShell) = 0;
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virtual PRUint32 GetNumberOfShells() const = 0;
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virtual nsIPresShell *GetShellAt(PRUint32 aIndex) const = 0;
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/**
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* Return the parent document of this document. Will return null
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* unless this document is within a compound document and has a
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* parent. Note that this parent chain may cross chrome boundaries.
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*/
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nsIDocument *GetParentDocument() const
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{
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return mParentDocument;
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}
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/**
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* Set the parent document of this document.
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*/
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void SetParentDocument(nsIDocument* aParent)
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{
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mParentDocument = aParent;
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}
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/**
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* Set the sub document for aContent to aSubDoc.
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*/
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virtual nsresult SetSubDocumentFor(nsIContent *aContent,
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nsIDocument* aSubDoc) = 0;
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/**
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* Get the sub document for aContent
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*/
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virtual nsIDocument *GetSubDocumentFor(nsIContent *aContent) const = 0;
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/**
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* Find the content node for which aDocument is a sub document.
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*/
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virtual nsIContent *FindContentForSubDocument(nsIDocument *aDocument) const = 0;
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/**
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* Return the root content object for this document.
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*/
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nsIContent *GetRootContent() const
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{
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return mRootContent;
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}
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virtual void SetRootContent(nsIContent* aRoot) = 0;
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/**
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* Get the direct children of the document - content in
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* the prolog, the root content and content in the epilog.
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*/
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virtual nsIContent *GetChildAt(PRUint32 aIndex) const = 0;
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virtual PRInt32 IndexOf(nsIContent* aPossibleChild) const = 0;
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virtual PRUint32 GetChildCount() const = 0;
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/**
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* Accessors to the collection of stylesheets owned by this document.
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* Style sheets are ordered, most significant last.
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*/
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/**
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* Get the number of stylesheets
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*
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* @param aIncludeSpecialSheets if this is set to true, all sheets
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* that are document sheets (including "special" sheets like
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* attribute sheets and inline style sheets) will be returned. If
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* false, only "normal" stylesheets will be returned
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* @return the number of stylesheets
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* @throws no exceptions
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*/
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virtual PRInt32 GetNumberOfStyleSheets(PRBool aIncludeSpecialSheets) const = 0;
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/**
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* Get a particular stylesheet
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* @param aIndex the index the stylesheet lives at. This is zero-based
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* @param aIncludeSpecialSheets see GetNumberOfStyleSheets. If this
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* is false, not all sheets will be returnable
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* @return the stylesheet at aIndex. Null if aIndex is out of range.
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* @throws no exceptions
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*/
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virtual nsIStyleSheet* GetStyleSheetAt(PRInt32 aIndex,
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PRBool aIncludeSpecialSheets) const = 0;
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/**
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* Insert a sheet at a particular spot in the stylesheet list (zero-based)
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* @param aSheet the sheet to insert
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* @param aIndex the index to insert at. This index will be
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* adjusted for the "special" sheets.
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* @throws no exceptions
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*/
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virtual void InsertStyleSheetAt(nsIStyleSheet* aSheet, PRInt32 aIndex) = 0;
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/**
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* Get the index of a particular stylesheet. This will _always_
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* consider the "special" sheets as part of the sheet list.
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* @param aSheet the sheet to get the index of
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* @return aIndex the index of the sheet in the full list
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*/
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virtual PRInt32 GetIndexOfStyleSheet(nsIStyleSheet* aSheet) const = 0;
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/**
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* Replace the stylesheets in aOldSheets with the stylesheets in
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* aNewSheets. The two lists must have equal length, and the sheet
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* at positon J in the first list will be replaced by the sheet at
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* position J in the second list. Some sheets in the second list
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* may be null; if so the corresponding sheets in the first list
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* will simply be removed.
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*/
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virtual void UpdateStyleSheets(nsCOMArray<nsIStyleSheet>& aOldSheets,
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nsCOMArray<nsIStyleSheet>& aNewSheets) = 0;
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/**
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* Add a stylesheet to the document
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*/
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virtual void AddStyleSheet(nsIStyleSheet* aSheet, PRUint32 aFlags) = 0;
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/**
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* Remove a stylesheet from the document
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*/
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virtual void RemoveStyleSheet(nsIStyleSheet* aSheet) = 0;
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/**
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* Notify the document that the applicable state of the sheet changed
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* and that observers should be notified and style sets updated
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*/
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virtual void SetStyleSheetApplicableState(nsIStyleSheet* aSheet,
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PRBool aApplicable) = 0;
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/**
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* Get this document's CSSLoader. May return null in error
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* conditions (OOM)
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*/
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virtual nsICSSLoader* GetCSSLoader() = 0;
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/**
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* Get this document's attribute stylesheet. May return null if
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* there isn't one.
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*/
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virtual nsHTMLStyleSheet* GetAttributeStyleSheet() const = 0;
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/**
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* Get this document's inline style sheet. May return null if there
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* isn't one
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*/
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virtual nsIHTMLCSSStyleSheet* GetInlineStyleSheet() const = 0;
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/**
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* Set the object from which a document can get a script context.
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* This is the context within which all scripts (during document
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* creation and during event handling) will run.
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*/
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virtual nsIScriptGlobalObject* GetScriptGlobalObject() const = 0;
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virtual void SetScriptGlobalObject(nsIScriptGlobalObject* aGlobalObject) = 0;
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/**
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* Get the script loader for this document
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*/
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virtual nsIScriptLoader* GetScriptLoader() = 0;
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//----------------------------------------------------------------------
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// Document notification API's
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/**
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* Add a new observer of document change notifications. Whenever
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* content is changed, appended, inserted or removed the observers are
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* informed.
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*/
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virtual void AddObserver(nsIDocumentObserver* aObserver) = 0;
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/**
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* Remove an observer of document change notifications. This will
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* return false if the observer cannot be found.
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*/
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virtual PRBool RemoveObserver(nsIDocumentObserver* aObserver) = 0;
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// Observation hooks used to propagate notifications to document observers.
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// BeginUpdate must be called before any batch of modifications of the
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// content model or of style data, EndUpdate must be called afterward.
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// To make this easy and painless, use the mozAutoDocUpdate helper class.
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virtual void BeginUpdate(nsUpdateType aUpdateType) = 0;
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virtual void EndUpdate(nsUpdateType aUpdateType) = 0;
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virtual void BeginLoad() = 0;
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virtual void EndLoad() = 0;
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virtual void CharacterDataChanged(nsIContent* aContent, PRBool aAppend) = 0;
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// notify that one or two content nodes changed state
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// either may be nsnull, but not both
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virtual void ContentStatesChanged(nsIContent* aContent1,
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nsIContent* aContent2,
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PRInt32 aStateMask) = 0;
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virtual void AttributeWillChange(nsIContent* aChild,
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PRInt32 aNameSpaceID,
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nsIAtom* aAttribute) = 0;
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virtual void AttributeChanged(nsIContent* aChild,
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PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType) = 0;
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virtual void ContentAppended(nsIContent* aContainer,
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PRInt32 aNewIndexInContainer) = 0;
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virtual void ContentInserted(nsIContent* aContainer,
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nsIContent* aChild,
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PRInt32 aIndexInContainer) = 0;
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virtual void ContentRemoved(nsIContent* aContainer,
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nsIContent* aChild,
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PRInt32 aIndexInContainer) = 0;
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// Observation hooks for style data to propagate notifications
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// to document observers
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virtual void StyleRuleChanged(nsIStyleSheet* aStyleSheet,
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nsIStyleRule* aOldStyleRule,
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nsIStyleRule* aNewStyleRule) = 0;
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virtual void StyleRuleAdded(nsIStyleSheet* aStyleSheet,
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nsIStyleRule* aStyleRule) = 0;
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virtual void StyleRuleRemoved(nsIStyleSheet* aStyleSheet,
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nsIStyleRule* aStyleRule) = 0;
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virtual nsresult HandleDOMEvent(nsIPresContext* aPresContext,
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nsEvent* aEvent, nsIDOMEvent** aDOMEvent,
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PRUint32 aFlags,
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nsEventStatus* aEventStatus) = 0;
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/**
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* Flush notifications for this document and its parent documents
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* (since those may affect the layout of this one).
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*/
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virtual void FlushPendingNotifications(mozFlushType aType) = 0;
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PRInt32 GetAndIncrementContentID()
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{
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return mNextContentID++;
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}
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nsIBindingManager* GetBindingManager() const
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{
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|
return mBindingManager;
|
|
}
|
|
|
|
nsINodeInfoManager* GetNodeInfoManager() const
|
|
{
|
|
return mNodeInfoManager;
|
|
}
|
|
|
|
virtual void Reset(nsIChannel* aChannel, nsILoadGroup* aLoadGroup) = 0;
|
|
/**
|
|
* Reset this document to aURI and aLoadGroup. aURI must not be null.
|
|
*/
|
|
virtual void ResetToURI(nsIURI *aURI, nsILoadGroup* aLoadGroup) = 0;
|
|
|
|
virtual void AddReference(void *aKey, nsISupports *aReference) = 0;
|
|
virtual already_AddRefed<nsISupports> RemoveReference(void *aKey) = 0;
|
|
|
|
/**
|
|
* Set the container (docshell) for this document.
|
|
*/
|
|
void SetContainer(nsISupports *aContainer)
|
|
{
|
|
mDocumentContainer = do_GetWeakReference(aContainer);
|
|
}
|
|
|
|
/**
|
|
* Get the container (docshell) for this document.
|
|
*/
|
|
already_AddRefed<nsISupports> GetContainer() const
|
|
{
|
|
nsISupports* container = nsnull;
|
|
if (mDocumentContainer)
|
|
CallQueryReferent(mDocumentContainer.get(), &container);
|
|
|
|
return container;
|
|
}
|
|
|
|
virtual nsIScriptEventManager* GetScriptEventManager() = 0;
|
|
|
|
/**
|
|
* Set and get XML declaration. Notice that if version is empty,
|
|
* there can be no XML declaration (it is a required part).
|
|
*/
|
|
virtual void SetXMLDeclaration(const nsAString& aVersion,
|
|
const nsAString& aEncoding,
|
|
const nsAString& Standalone) = 0;
|
|
virtual void GetXMLDeclaration(nsAString& aVersion,
|
|
nsAString& aEncoding,
|
|
nsAString& Standalone) = 0;
|
|
|
|
virtual PRBool IsCaseSensitive()
|
|
{
|
|
return PR_TRUE;
|
|
}
|
|
|
|
virtual PRBool IsScriptEnabled() = 0;
|
|
|
|
protected:
|
|
nsString mDocumentTitle;
|
|
nsCOMPtr<nsIURI> mDocumentURI;
|
|
nsCOMPtr<nsIURI> mDocumentBaseURI;
|
|
|
|
nsWeakPtr mDocumentLoadGroup;
|
|
|
|
nsWeakPtr mDocumentContainer;
|
|
|
|
nsCString mCharacterSet;
|
|
PRInt32 mCharacterSetSource;
|
|
|
|
// This is just a weak pointer; the parent document owns its children.
|
|
nsIDocument* mParentDocument;
|
|
|
|
// A weak reference to the only child element, or null if no
|
|
// such element exists.
|
|
nsIContent* mRootContent;
|
|
|
|
// A content ID counter used to give a monotonically increasing ID
|
|
// to the content objects in the document's content model
|
|
PRInt32 mNextContentID;
|
|
|
|
nsCOMPtr<nsIBindingManager> mBindingManager;
|
|
nsCOMPtr<nsINodeInfoManager> mNodeInfoManager;
|
|
|
|
// True if BIDI is enabled.
|
|
PRBool mBidiEnabled;
|
|
|
|
nsXPIDLCString mContentLanguage;
|
|
nsCString mContentType;
|
|
};
|
|
|
|
|
|
/**
|
|
* Helper class to automatically handle batching of document updates. This
|
|
* class will call BeginUpdate on construction and EndUpdate on destruction on
|
|
* the given document with the given update type. The document could be null,
|
|
* in which case no updates will be called. The constructor also takes a
|
|
* boolean that can be set to false to prevent notifications.
|
|
*/
|
|
class mozAutoDocUpdate
|
|
{
|
|
public:
|
|
mozAutoDocUpdate(nsIDocument* aDocument, nsUpdateType aUpdateType,
|
|
PRBool aNotify) :
|
|
mDocument(aNotify ? aDocument : nsnull),
|
|
mUpdateType(aUpdateType)
|
|
{
|
|
if (mDocument) {
|
|
mDocument->BeginUpdate(mUpdateType);
|
|
}
|
|
}
|
|
|
|
~mozAutoDocUpdate()
|
|
{
|
|
if (mDocument) {
|
|
mDocument->EndUpdate(mUpdateType);
|
|
}
|
|
}
|
|
|
|
private:
|
|
nsCOMPtr<nsIDocument> mDocument;
|
|
nsUpdateType mUpdateType;
|
|
};
|
|
|
|
// XXX These belong somewhere else
|
|
nsresult
|
|
NS_NewHTMLDocument(nsIDocument** aInstancePtrResult);
|
|
|
|
nsresult
|
|
NS_NewXMLDocument(nsIDocument** aInstancePtrResult);
|
|
|
|
#ifdef MOZ_SVG
|
|
nsresult
|
|
NS_NewSVGDocument(nsIDocument** aInstancePtrResult);
|
|
#endif
|
|
|
|
nsresult
|
|
NS_NewImageDocument(nsIDocument** aInstancePtrResult);
|
|
|
|
nsresult
|
|
NS_NewDocumentFragment(nsIDOMDocumentFragment** aInstancePtrResult,
|
|
nsIDocument* aOwnerDocument);
|
|
nsresult
|
|
NS_NewDOMDocument(nsIDOMDocument** aInstancePtrResult,
|
|
const nsAString& aNamespaceURI,
|
|
const nsAString& aQualifiedName,
|
|
nsIDOMDocumentType* aDoctype,
|
|
nsIURI* aBaseURI);
|
|
nsresult
|
|
NS_NewPluginDocument(nsIDocument** aInstancePtrResult);
|
|
|
|
#endif /* nsIDocument_h___ */
|