зеркало из https://github.com/mozilla/gecko-dev.git
363 строки
13 KiB
C++
363 строки
13 KiB
C++
/* -*- 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) 1998 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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#ifndef nsIDocument_h___
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#define nsIDocument_h___
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#include "nslayout.h"
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#include "nsISupports.h"
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#include "nsGUIEvent.h"
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#include "nsAWritableString.h"
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class nsIAtom;
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class nsIArena;
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class nsIContent;
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class nsIDocumentContainer;
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class nsIDocumentObserver;
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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 nsIStyleSet;
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class nsIStyleSheet;
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class nsIStyleRule;
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class nsIURI;
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class nsILoadGroup;
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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 nsINameSpaceManager;
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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 nsINodeInfoManager;
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class nsIDOMDocument;
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class nsIDOMDocumentType;
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class nsIBindingManager;
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class nsIObserver;
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class nsISupportsArray;
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// IID for the nsIDocument interface
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#define NS_IDOCUMENT_IID \
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{ 0x94c6ceb0, 0x9447, 0x11d1, \
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{0x93, 0x23, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32} }
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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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//----------------------------------------------------------------------
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// Document interface
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class nsIDocument : public nsISupports {
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public:
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static const nsIID& GetIID() { static nsIID iid = NS_IDOCUMENT_IID; return iid; }
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// All documents have a memory arena associated with them which is
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// used for memory allocation during document creation. This call
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// returns the arena associated with this document.
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virtual nsIArena* GetArena() = 0;
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NS_IMETHOD 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) = 0;
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NS_IMETHOD 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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virtual const nsString* GetDocumentTitle() const = 0;
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/**
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* Return the URL for the document. May return null.
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*/
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virtual nsIURI* GetDocumentURL() const = 0;
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/**
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* Return the principal responsible for this document.
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*/
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NS_IMETHOD GetPrincipal(nsIPrincipal **aPrincipal) = 0;
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/**
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* Update principal responsible for this document to the intersection
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* of its previous value and aPrincipal.
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*/
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NS_IMETHOD AddPrincipal(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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NS_IMETHOD GetDocumentLoadGroup(nsILoadGroup** aGroup) const = 0;
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/**
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* Return the base URL for realtive URLs in the document. May return null (or the document URL).
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*/
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NS_IMETHOD GetBaseURL(nsIURI*& aURL) const = 0;
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/**
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* Return the content (mime) type of this document.
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*/
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NS_IMETHOD GetContentType(nsAWritableString& aContentType) const = 0;
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/**
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* Return a standard name for the document's character set. This will
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* trigger a startDocumentLoad if necessary to answer the question.
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*/
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NS_IMETHOD GetDocumentCharacterSet(nsAWritableString& oCharSetID) = 0;
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NS_IMETHOD SetDocumentCharacterSet(const nsAReadableString& aCharSetID) = 0;
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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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NS_IMETHOD AddCharSetObserver(nsIObserver* aObserver) = 0;
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/**
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* Remove a charset observer.
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*/
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NS_IMETHOD RemoveCharSetObserver(nsIObserver* aObserver) = 0;
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#ifdef IBMBIDI
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// The state BidiEnabled should persist across multiple views (screen, print)
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// 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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NS_IMETHOD GetBidiEnabled(PRBool* aBidiEnabled) const = 0;
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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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NS_IMETHOD SetBidiEnabled(PRBool aBidiEnabled) = 0;
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#endif // IBMBIDI
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/**
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* Return the Line Breaker for the document
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*/
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NS_IMETHOD GetLineBreaker(nsILineBreaker** aResult) = 0;
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NS_IMETHOD SetLineBreaker(nsILineBreaker* aLineBreaker) = 0;
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NS_IMETHOD GetWordBreaker(nsIWordBreaker** aResult) = 0;
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NS_IMETHOD SetWordBreaker(nsIWordBreaker* aWordBreaker) = 0;
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/**
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* Access HTTP header data (this may also get set from other sources, like
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* HTML META tags).
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*/
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NS_IMETHOD GetHeaderData(nsIAtom* aHeaderField, nsAWritableString& aData) const = 0;
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NS_IMETHOD SetHeaderData(nsIAtom* aheaderField, const nsAReadableString& aData) = 0;
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/**
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* Create a new presentation shell that will use aContext for
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* it's presentation context (presentation context's <b>must not</b> be
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* shared among multiple presentation shell's).
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*/
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NS_IMETHOD CreateShell(nsIPresContext* aContext,
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nsIViewManager* aViewManager,
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nsIStyleSet* aStyleSet,
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nsIPresShell** aInstancePtrResult) = 0;
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virtual PRBool DeleteShell(nsIPresShell* aShell) = 0;
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virtual PRInt32 GetNumberOfShells() = 0;
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virtual nsIPresShell* GetShellAt(PRInt32 aIndex) = 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 parent.
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*/
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virtual nsIDocument* GetParentDocument() = 0;
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virtual void SetParentDocument(nsIDocument* aParent) = 0;
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virtual void AddSubDocument(nsIDocument* aSubDoc) = 0;
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virtual PRInt32 GetNumberOfSubDocuments() = 0;
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virtual nsIDocument* GetSubDocumentAt(PRInt32 aIndex) = 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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virtual nsIContent* GetRootContent() = 0;
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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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NS_IMETHOD ChildAt(PRInt32 aIndex, nsIContent*& aResult) const = 0;
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NS_IMETHOD IndexOf(nsIContent* aPossibleChild, PRInt32& aIndex) const = 0;
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NS_IMETHOD GetChildCount(PRInt32& aCount) = 0;
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/**
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* Get the style sheets owned by this document.
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* Style sheets are ordered, most significant last.
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*/
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virtual PRInt32 GetNumberOfStyleSheets() = 0;
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virtual nsIStyleSheet* GetStyleSheetAt(PRInt32 aIndex) = 0;
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virtual PRInt32 GetIndexOfStyleSheet(nsIStyleSheet* aSheet) = 0;
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virtual void AddStyleSheet(nsIStyleSheet* aSheet) = 0;
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virtual void RemoveStyleSheet(nsIStyleSheet* aSheet) = 0;
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NS_IMETHOD UpdateStyleSheets(nsISupportsArray* aOldSheets, nsISupportsArray* aNewSheets) = 0;
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NS_IMETHOD InsertStyleSheetAt(nsIStyleSheet* aSheet, PRInt32 aIndex, PRBool aNotify) = 0;
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virtual void SetStyleSheetDisabledState(nsIStyleSheet* aSheet,
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PRBool mDisabled) = 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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NS_IMETHOD GetScriptGlobalObject(nsIScriptGlobalObject** aGlobalObject) = 0;
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NS_IMETHOD SetScriptGlobalObject(nsIScriptGlobalObject* aGlobalObject) = 0;
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/**
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* Get the name space manager for this document
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*/
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NS_IMETHOD GetNameSpaceManager(nsINameSpaceManager*& aManager) = 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 by content nodes to propagate
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// notifications to document observers.
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NS_IMETHOD BeginUpdate() = 0;
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NS_IMETHOD EndUpdate() = 0;
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NS_IMETHOD BeginLoad() = 0;
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NS_IMETHOD EndLoad() = 0;
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NS_IMETHOD ContentChanged(nsIContent* aContent,
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nsISupports* aSubContent) = 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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NS_IMETHOD ContentStatesChanged(nsIContent* aContent1,
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nsIContent* aContent2) = 0;
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NS_IMETHOD AttributeWillChange(nsIContent* aChild,
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PRInt32 aNameSpaceID,
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nsIAtom* aAttribute) = 0;
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NS_IMETHOD AttributeChanged(nsIContent* aChild,
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PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aHint) = 0; // See nsStyleConsts fot hint values
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NS_IMETHOD ContentAppended(nsIContent* aContainer,
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PRInt32 aNewIndexInContainer) = 0;
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NS_IMETHOD ContentInserted(nsIContent* aContainer,
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nsIContent* aChild,
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PRInt32 aIndexInContainer) = 0;
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NS_IMETHOD ContentReplaced(nsIContent* aContainer,
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nsIContent* aOldChild,
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nsIContent* aNewChild,
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PRInt32 aIndexInContainer) = 0;
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NS_IMETHOD 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 propogate notifications
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// to document observers
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NS_IMETHOD StyleRuleChanged(nsIStyleSheet* aStyleSheet,
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nsIStyleRule* aStyleRule,
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PRInt32 aHint) = 0; // See nsStyleConsts fot hint values
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NS_IMETHOD StyleRuleAdded(nsIStyleSheet* aStyleSheet,
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nsIStyleRule* aStyleRule) = 0;
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NS_IMETHOD StyleRuleRemoved(nsIStyleSheet* aStyleSheet,
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nsIStyleRule* aStyleRule) = 0;
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/**
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* Finds text in content
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*/
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NS_IMETHOD FindNext(const nsAReadableString &aSearchStr, PRBool aMatchCase, PRBool aSearchDown, PRBool &aIsFound) = 0;
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NS_IMETHOD HandleDOMEvent(nsIPresContext* aPresContext,
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nsEvent* aEvent,
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nsIDOMEvent** aDOMEvent,
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PRUint32 aFlags,
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nsEventStatus* aEventStatus) = 0;
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NS_IMETHOD_(PRBool) EventCaptureRegistration(PRInt32 aCapturerIncrement) = 0;
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NS_IMETHOD FlushPendingNotifications(PRBool aFlushReflows=PR_TRUE) = 0;
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NS_IMETHOD GetAndIncrementContentID(PRInt32* aID) = 0;
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NS_IMETHOD GetBindingManager(nsIBindingManager** aResult) = 0;
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NS_IMETHOD GetNodeInfoManager(nsINodeInfoManager*& aNodeInfoManager) = 0;
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NS_IMETHOD Reset(nsIChannel* aChannel, nsILoadGroup* aLoadGroup) = 0;
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};
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// XXX These belong somewhere else
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extern NS_LAYOUT nsresult
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NS_NewHTMLDocument(nsIDocument** aInstancePtrResult);
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extern NS_LAYOUT nsresult
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NS_NewXMLDocument(nsIDocument** aInstancePtrResult);
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extern NS_LAYOUT nsresult
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NS_NewImageDocument(nsIDocument** aInstancePtrResult);
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extern NS_LAYOUT nsresult
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NS_NewDocumentFragment(nsIDOMDocumentFragment** aInstancePtrResult,
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nsIDocument* aOwnerDocument);
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extern NS_LAYOUT nsresult
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NS_NewDOMDocument(nsIDOMDocument** aInstancePtrResult,
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const nsAReadableString& aNamespaceURI,
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const nsAReadableString& aQualifiedName,
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nsIDOMDocumentType* aDoctype,
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nsIURI* aBaseURI);
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// Note: The buffer passed into NewPostData(...) becomes owned by the IPostData
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// instance and is freed when the instance is destroyed...
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//
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#if 0
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extern NS_LAYOUT nsresult
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NS_NewPostData(PRBool aIsFile, char *aData, nsIPostData** aInstancePtrResult);
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#endif
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#endif /* nsIDocument_h___ */
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