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135 lines
4.1 KiB
C++
135 lines
4.1 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 License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef nsIPresShell_h___
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#define nsIPresShell_h___
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#include "nslayout.h"
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#include "nsISupports.h"
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#include "nsCoord.h"
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class nsIContent;
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class nsIDocument;
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class nsIDocumentObserver;
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class nsIFrame;
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class nsIPresContext;
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class nsIStyleSet;
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class nsIViewManager;
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class nsIReflowCommand;
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class nsIDeviceContext;
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class nsIRenderingContext;
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#define NS_IPRESSHELL_IID \
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{ 0x76e79c60, 0x944e, 0x11d1, \
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{0x93, 0x23, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32} }
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/**
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* Presentation shell interface. Presentation shells are the
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* controlling point for managing the presentation of a document. The
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* presentation shell holds a live reference to the document, the
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* presentation context, the style manager, the style set and the root
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* frame. <p>
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*
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* When this object is Release'd, it will release the document, the
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* presentation context, the style manager, the style set and the root
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* frame.
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*/
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class nsIPresShell : public nsISupports {
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public:
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NS_IMETHOD Init(nsIDocument* aDocument,
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nsIPresContext* aPresContext,
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nsIViewManager* aViewManager,
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nsIStyleSet* aStyleSet) = 0;
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virtual nsIDocument* GetDocument() = 0;
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virtual nsIPresContext* GetPresContext() = 0;
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virtual nsIViewManager * GetViewManager() = 0;
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virtual nsIStyleSet* GetStyleSet() = 0;
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NS_IMETHOD EnterReflowLock() = 0;
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NS_IMETHOD ExitReflowLock() = 0;
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// Make shell be a document observer
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virtual void BeginObservingDocument() = 0;
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// Make shell stop being a document observer
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virtual void EndObservingDocument() = 0;
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/**
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* Perform the initial reflow. Constructs the frame for the root content
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* object and then reflows the frame model into the specified width and
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* height.
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*
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* The coordinates for aWidth and aHeight must be in standard nscoord's.
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*/
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NS_IMETHOD InitialReflow(nscoord aWidth, nscoord aHeight) = 0;
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/**
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* Reflow the frame model into a new width and height. The
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* coordinates for aWidth and aHeight must be in standard nscoord's.
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*/
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NS_IMETHOD ResizeReflow(nscoord aWidth, nscoord aHeight) = 0;
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/**
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* Reflow the frame model with a reflow reason of eReflowReason_StyleChange
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*/
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NS_IMETHOD StyleChangeReflow() = 0;
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virtual nsIFrame* GetRootFrame() = 0;
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virtual nsIFrame* FindFrameWithContent(nsIContent* aContent) = 0;
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virtual void AppendReflowCommand(nsIReflowCommand* aReflowCommand) = 0;
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virtual void ProcessReflowCommands() = 0;
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virtual void ClearFrameRefs(nsIFrame* aFrame) = 0;
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/**
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* Given a frame, cough up a rendering context suitable for use with
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* the frame.
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*/
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NS_IMETHOD CreateRenderingContext(nsIFrame *aFrame, nsIRenderingContext *&aContext) = 0;
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// XXX events
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// XXX selection
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/**
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* See if reflow verification is enabled. To enable reflow verification add
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* "verifyreflow:1" to your NSPR_LOG_MODULES environment variable
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* (any non-zero debug level will work). Or, call SetVerifyReflowEnable
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* with PR_TRUE.
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*/
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static NS_LAYOUT PRBool GetVerifyReflowEnable();
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/**
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* Set the verify-reflow enable flag.
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*/
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static NS_LAYOUT void SetVerifyReflowEnable(PRBool aEnabled);
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};
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/**
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* Create a new empty presentation shell. Upon success, call Init
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* before attempting to use the shell.
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*/
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extern NS_LAYOUT nsresult
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NS_NewPresShell(nsIPresShell** aInstancePtrResult);
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#endif /* nsIPresShell_h___ */
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