mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 06:35:42 +00:00
227 lines
7.5 KiB
C++
227 lines
7.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
#ifndef nsIPresShell_h___
|
|
#define nsIPresShell_h___
|
|
|
|
#include "nslayout.h"
|
|
#include "nsISupports.h"
|
|
#include "nsCoord.h"
|
|
|
|
class nsIContent;
|
|
class nsIDocument;
|
|
class nsIDocumentObserver;
|
|
class nsIFrame;
|
|
class nsIPresContext;
|
|
class nsIStyleSet;
|
|
class nsIViewManager;
|
|
class nsIReflowCommand;
|
|
class nsIDeviceContext;
|
|
class nsIRenderingContext;
|
|
class nsIPageSequenceFrame;
|
|
class nsIDOMSelection;
|
|
class nsString;
|
|
class nsStringArray;
|
|
class nsICaret;
|
|
|
|
#define NS_IPRESSHELL_IID \
|
|
{ 0x76e79c60, 0x944e, 0x11d1, \
|
|
{0x93, 0x23, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32} }
|
|
|
|
/**
|
|
* Presentation shell interface. Presentation shells are the
|
|
* controlling point for managing the presentation of a document. The
|
|
* presentation shell holds a live reference to the document, the
|
|
* presentation context, the style manager, the style set and the root
|
|
* frame. <p>
|
|
*
|
|
* When this object is Release'd, it will release the document, the
|
|
* presentation context, the style manager, the style set and the root
|
|
* frame.
|
|
*/
|
|
class nsIPresShell : public nsISupports {
|
|
public:
|
|
NS_IMETHOD Init(nsIDocument* aDocument,
|
|
nsIPresContext* aPresContext,
|
|
nsIViewManager* aViewManager,
|
|
nsIStyleSet* aStyleSet) = 0;
|
|
|
|
NS_IMETHOD GetDocument(nsIDocument** aResult) = 0;
|
|
|
|
NS_IMETHOD GetPresContext(nsIPresContext** aResult) = 0;
|
|
|
|
NS_IMETHOD GetViewManager(nsIViewManager** aResult) = 0;
|
|
|
|
NS_IMETHOD GetStyleSet(nsIStyleSet** aResult) = 0;
|
|
|
|
NS_IMETHOD GetActiveAlternateStyleSheet(nsString& aSheetTitle) = 0;
|
|
|
|
NS_IMETHOD SelectAlternateStyleSheet(const nsString& aSheetTitle) = 0;
|
|
|
|
/**
|
|
* Gather titles of all selectable (alternate and preferred) style sheets
|
|
* fills void array with nsString* caller must free strings
|
|
*/
|
|
NS_IMETHOD ListAlternateStyleSheets(nsStringArray& aTitleList) = 0;
|
|
|
|
/**
|
|
* GetSelection will return the selection that the presentation
|
|
* shell may implement.
|
|
*
|
|
* @param aSelection will hold the return value
|
|
*/
|
|
NS_IMETHOD GetSelection(nsIDOMSelection** aSelection) = 0;
|
|
|
|
NS_IMETHOD EnterReflowLock() = 0;
|
|
|
|
NS_IMETHOD ExitReflowLock() = 0;
|
|
|
|
// Make shell be a document observer
|
|
NS_IMETHOD BeginObservingDocument() = 0;
|
|
|
|
// Make shell stop being a document observer
|
|
NS_IMETHOD EndObservingDocument() = 0;
|
|
|
|
/**
|
|
* Perform the initial reflow. Constructs the frame for the root content
|
|
* object and then reflows the frame model into the specified width and
|
|
* height.
|
|
*
|
|
* The coordinates for aWidth and aHeight must be in standard nscoord's.
|
|
*/
|
|
NS_IMETHOD InitialReflow(nscoord aWidth, nscoord aHeight) = 0;
|
|
|
|
/**
|
|
* Reflow the frame model into a new width and height. The
|
|
* coordinates for aWidth and aHeight must be in standard nscoord's.
|
|
*/
|
|
NS_IMETHOD ResizeReflow(nscoord aWidth, nscoord aHeight) = 0;
|
|
|
|
/**
|
|
* Reflow the frame model with a reflow reason of eReflowReason_StyleChange
|
|
*/
|
|
NS_IMETHOD StyleChangeReflow() = 0;
|
|
|
|
NS_IMETHOD GetRootFrame(nsIFrame** aFrame) const = 0;
|
|
|
|
/**
|
|
* Returns the page sequence frame associated with the frame hierarchy.
|
|
* Returns NULL if not a paginated view.
|
|
*/
|
|
NS_IMETHOD GetPageSequenceFrame(nsIPageSequenceFrame** aResult) const = 0;
|
|
|
|
/**
|
|
* Returns the primary frame associated with the content object.
|
|
*
|
|
* The primary frame is the frame that is most closely associated with the
|
|
* content. A frame is more closely associated with the content that another
|
|
* frame if the one frame contains directly or indirectly the other frame (e.g.,
|
|
* when a frame is scrolled there is a scroll frame that contains the frame
|
|
* being scrolled). The primary frame is always the first-in-flow.
|
|
*
|
|
* In the case of absolutely positioned elements and floated elements,
|
|
* the primary frame is the frame that is out of the flow and not the
|
|
* placeholder frame.
|
|
*/
|
|
NS_IMETHOD GetPrimaryFrameFor(nsIContent* aContent,
|
|
nsIFrame** aPrimaryFrame) const = 0;
|
|
|
|
/**
|
|
* Returns a layout object associated with the primary frame for the content object.
|
|
*
|
|
* @param aContent the content object for which we seek a layout object
|
|
* @param aResult the resulting layout object as an nsISupports, if found. Refcounted.
|
|
*/
|
|
NS_IMETHOD GetLayoutObjectFor(nsIContent* aContent,
|
|
nsISupports** aResult) const = 0;
|
|
|
|
/**
|
|
* Get/Set the placeholder frame associated with the specified frame.
|
|
*
|
|
* Out of flow frames (e.g., absolutely positioned frames and floated frames)
|
|
* can have placeholder frames that are inserted into the flow and indicate
|
|
* where the frame would be if it were part of the flow
|
|
*/
|
|
NS_IMETHOD GetPlaceholderFrameFor(nsIFrame* aFrame,
|
|
nsIFrame** aPlaceholderFrame) const = 0;
|
|
NS_IMETHOD SetPlaceholderFrameFor(nsIFrame* aFrame,
|
|
nsIFrame* aPlaceholderFrame) = 0;
|
|
|
|
NS_IMETHOD AppendReflowCommand(nsIReflowCommand* aReflowCommand) = 0;
|
|
|
|
NS_IMETHOD ProcessReflowCommands() = 0;
|
|
|
|
NS_IMETHOD ClearFrameRefs(nsIFrame* aFrame) = 0;
|
|
|
|
/**
|
|
* Given a frame, cough up a rendering context suitable for use with
|
|
* the frame.
|
|
*/
|
|
NS_IMETHOD CreateRenderingContext(nsIFrame *aFrame,
|
|
nsIRenderingContext** aContext) = 0;
|
|
|
|
// Notification that we were unable to render a replaced element.
|
|
// Called when the replaced element can not be rendered, and we should
|
|
// instead render the element's contents.
|
|
// The content object associated with aFrame should either be a IMG
|
|
// element or an OBJECT element.
|
|
NS_IMETHOD CantRenderReplacedElement(nsIPresContext* aPresContext,
|
|
nsIFrame* aFrame) = 0;
|
|
|
|
|
|
/**
|
|
* Scrolls the view of the document so that the anchor with the specified
|
|
* name is displayed at the top of the window
|
|
*/
|
|
NS_IMETHOD GoToAnchor(const nsString& aAnchorName) const = 0;
|
|
|
|
/**
|
|
* Get the caret, if it exists. AddRefs it.
|
|
*/
|
|
NS_IMETHOD GetCaret(nsICaret **outCaret) = 0;
|
|
|
|
/**
|
|
* Refresh the caret. Called by frames when they redraw
|
|
*/
|
|
NS_IMETHOD RefreshCaret() = 0;
|
|
|
|
// XXX events
|
|
// XXX selection
|
|
|
|
/**
|
|
* See if reflow verification is enabled. To enable reflow verification add
|
|
* "verifyreflow:1" to your NSPR_LOG_MODULES environment variable
|
|
* (any non-zero debug level will work). Or, call SetVerifyReflowEnable
|
|
* with PR_TRUE.
|
|
*/
|
|
static NS_LAYOUT PRBool GetVerifyReflowEnable();
|
|
|
|
/**
|
|
* Set the verify-reflow enable flag.
|
|
*/
|
|
static NS_LAYOUT void SetVerifyReflowEnable(PRBool aEnabled);
|
|
};
|
|
|
|
/**
|
|
* Create a new empty presentation shell. Upon success, call Init
|
|
* before attempting to use the shell.
|
|
*/
|
|
extern NS_LAYOUT nsresult
|
|
NS_NewPresShell(nsIPresShell** aInstancePtrResult);
|
|
|
|
#endif /* nsIPresShell_h___ */
|