mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-07-08 02:10:14 +02:00
249 lines
10 KiB
C++
249 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* vim:cindent:ts=2:et:sw=2:
|
|
*
|
|
* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Pierre Phaneuf <pp@ludusdesign.com>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK *****
|
|
*
|
|
* This Original Code has been modified by IBM Corporation. Modifications made
|
|
* by IBM described herein are Copyright (c) International Business Machines
|
|
* Corporation, 2000. Modifications to Mozilla code or documentation identified
|
|
* per MPL Section 3.3
|
|
*
|
|
* Date Modified by Description of modification
|
|
* 04/20/2000 IBM Corp. OS/2 VisualAge build.
|
|
*/
|
|
|
|
#ifndef _nsFrameManager_h_
|
|
#define _nsFrameManager_h_
|
|
|
|
#include "nsIFrame.h"
|
|
#include "nsIStatefulFrame.h"
|
|
#include "nsChangeHint.h"
|
|
#include "nsFrameManagerBase.h"
|
|
|
|
/**
|
|
* Frame manager interface. The frame manager serves two purposes:
|
|
* <li>provides a service for mapping from content to frame and from
|
|
* out-of-flow frame to placeholder frame.
|
|
* <li>handles structural modifications to the frame model. If the frame model
|
|
* lock can be acquired, then the changes are processed immediately; otherwise,
|
|
* they're queued and processed later.
|
|
*
|
|
* Do not add virtual methods to this class, or bryner will punish you.
|
|
*/
|
|
|
|
class nsFrameManager : public nsFrameManagerBase
|
|
{
|
|
public:
|
|
nsFrameManager() NS_HIDDEN;
|
|
~nsFrameManager() NS_HIDDEN;
|
|
|
|
void* operator new(size_t aSize, nsIPresShell* aHost) {
|
|
NS_ASSERTION(aSize == sizeof(nsFrameManager), "Unexpected subclass");
|
|
NS_ASSERTION(aSize == sizeof(nsFrameManagerBase),
|
|
"Superclass/subclass mismatch");
|
|
return aHost->FrameManager();
|
|
}
|
|
|
|
// Initialization
|
|
NS_HIDDEN_(nsresult) Init(nsIPresShell* aPresShell, nsStyleSet* aStyleSet);
|
|
|
|
/*
|
|
* After Destroy is called, it is an error to call any FrameManager methods.
|
|
* Destroy should be called when the frame tree managed by the frame
|
|
* manager is no longer being displayed.
|
|
*/
|
|
NS_HIDDEN_(void) Destroy();
|
|
|
|
/*
|
|
* Gets and sets the root frame (typically the viewport). The lifetime of the
|
|
* root frame is controlled by the frame manager. When the frame manager is
|
|
* destroyed, it destroys the entire frame hierarchy.
|
|
*/
|
|
NS_HIDDEN_(nsIFrame*) GetRootFrame() { return mRootFrame; }
|
|
NS_HIDDEN_(void) SetRootFrame(nsIFrame* aRootFrame)
|
|
{
|
|
NS_ASSERTION(!mRootFrame, "already have a root frame");
|
|
mRootFrame = aRootFrame;
|
|
}
|
|
|
|
/*
|
|
* Get the canvas frame, searching from the root frame down.
|
|
* The canvas frame may or may not exist, so this may return null.
|
|
*/
|
|
NS_HIDDEN_(nsIFrame*) GetCanvasFrame();
|
|
|
|
// Primary frame functions
|
|
NS_HIDDEN_(nsIFrame*) GetPrimaryFrameFor(nsIContent* aContent);
|
|
// aPrimaryFrame must not be null. If you're trying to remove a primary frame
|
|
// mapping, use RemoveAsPrimaryFrame.
|
|
NS_HIDDEN_(nsresult) SetPrimaryFrameFor(nsIContent* aContent,
|
|
nsIFrame* aPrimaryFrame);
|
|
// If aPrimaryFrame is the current primary frame for aContent, remove the
|
|
// relevant hashtable entry. If the current primary frame for aContent is
|
|
// null, this does nothing. aPrimaryFrame must not be null, and this method
|
|
// handles calling RemovedAsPrimaryFrame on aPrimaryFrame.
|
|
NS_HIDDEN_(void) RemoveAsPrimaryFrame(nsIContent* aContent,
|
|
nsIFrame* aPrimaryFrame);
|
|
NS_HIDDEN_(void) ClearPrimaryFrameMap();
|
|
|
|
// Placeholder frame functions
|
|
NS_HIDDEN_(nsPlaceholderFrame*) GetPlaceholderFrameFor(nsIFrame* aFrame);
|
|
NS_HIDDEN_(nsresult)
|
|
RegisterPlaceholderFrame(nsPlaceholderFrame* aPlaceholderFrame);
|
|
|
|
NS_HIDDEN_(void)
|
|
UnregisterPlaceholderFrame(nsPlaceholderFrame* aPlaceholderFrame);
|
|
|
|
NS_HIDDEN_(void) ClearPlaceholderFrameMap();
|
|
|
|
// Mapping undisplayed content
|
|
NS_HIDDEN_(nsStyleContext*) GetUndisplayedContent(nsIContent* aContent);
|
|
NS_HIDDEN_(void) SetUndisplayedContent(nsIContent* aContent,
|
|
nsStyleContext* aStyleContext);
|
|
NS_HIDDEN_(void) ChangeUndisplayedContent(nsIContent* aContent,
|
|
nsStyleContext* aStyleContext);
|
|
NS_HIDDEN_(void) ClearUndisplayedContentIn(nsIContent* aContent,
|
|
nsIContent* aParentContent);
|
|
NS_HIDDEN_(void) ClearAllUndisplayedContentIn(nsIContent* aParentContent);
|
|
NS_HIDDEN_(void) ClearUndisplayedContentMap();
|
|
|
|
// Functions for manipulating the frame model
|
|
NS_HIDDEN_(nsresult) AppendFrames(nsIFrame* aParentFrame,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aFrameList)
|
|
{
|
|
return aParentFrame->AppendFrames(aListName, aFrameList);
|
|
}
|
|
|
|
NS_HIDDEN_(nsresult) InsertFrames(nsIFrame* aParentFrame,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aPrevFrame,
|
|
nsIFrame* aFrameList);
|
|
|
|
NS_HIDDEN_(nsresult) RemoveFrame(nsIFrame* aParentFrame,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aOldFrame);
|
|
|
|
NS_HIDDEN_(nsresult) ReplaceFrame(nsIFrame* aParentFrame,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aOldFrame,
|
|
nsIFrame* aNewFrame)
|
|
{
|
|
return aParentFrame->ReplaceFrame(aListName, aOldFrame, aNewFrame);
|
|
}
|
|
|
|
/*
|
|
* Notification that a frame is about to be destroyed. This allows any
|
|
* outstanding references to the frame to be cleaned up.
|
|
*/
|
|
NS_HIDDEN_(void) NotifyDestroyingFrame(nsIFrame* aFrame);
|
|
|
|
/*
|
|
* Reparent the style contexts of this frame subtree. The parent frame of
|
|
* aFrame must be changed to the new parent before this function is called;
|
|
* the new parent style context will be automatically computed based on the
|
|
* new position in the frame tree.
|
|
*
|
|
* @param aFrame the root of the subtree to reparent. Must not be null.
|
|
*/
|
|
NS_HIDDEN_(nsresult) ReParentStyleContext(nsIFrame* aFrame);
|
|
|
|
/*
|
|
* Re-resolve the style contexts for a frame tree. Returns the top-level
|
|
* change hint resulting from the style re-resolution.
|
|
*/
|
|
NS_HIDDEN_(nsChangeHint)
|
|
ComputeStyleChangeFor(nsIFrame* aFrame,
|
|
nsStyleChangeList* aChangeList,
|
|
nsChangeHint aMinChange);
|
|
|
|
// Determine whether an attribute affects style
|
|
NS_HIDDEN_(nsReStyleHint) HasAttributeDependentStyle(nsIContent *aContent,
|
|
nsIAtom *aAttribute,
|
|
PRInt32 aModType);
|
|
|
|
/*
|
|
* Capture/restore frame state for the frame subtree rooted at aFrame.
|
|
* aState is the document state storage object onto which each frame
|
|
* stores its state.
|
|
*/
|
|
|
|
NS_HIDDEN_(void) CaptureFrameState(nsIFrame* aFrame,
|
|
nsILayoutHistoryState* aState);
|
|
|
|
NS_HIDDEN_(void) RestoreFrameState(nsIFrame* aFrame,
|
|
nsILayoutHistoryState* aState);
|
|
|
|
/*
|
|
* Add/restore state for one frame
|
|
* (special, global type, like scroll position)
|
|
*/
|
|
NS_HIDDEN_(void) CaptureFrameStateFor(nsIFrame* aFrame,
|
|
nsILayoutHistoryState* aState,
|
|
nsIStatefulFrame::SpecialStateID aID =
|
|
nsIStatefulFrame::eNoID);
|
|
|
|
NS_HIDDEN_(void) RestoreFrameStateFor(nsIFrame* aFrame,
|
|
nsILayoutHistoryState* aState,
|
|
nsIStatefulFrame::SpecialStateID aID =
|
|
nsIStatefulFrame::eNoID);
|
|
|
|
#ifdef NS_DEBUG
|
|
/**
|
|
* DEBUG ONLY method to verify integrity of style tree versus frame tree
|
|
*/
|
|
NS_HIDDEN_(void) DebugVerifyStyleTree(nsIFrame* aFrame);
|
|
#endif
|
|
|
|
private:
|
|
|
|
NS_HIDDEN_(nsIPresShell*) GetPresShell() const { return mPresShell; }
|
|
NS_HIDDEN_(nsPresContext*) GetPresContext() const {
|
|
return mPresShell->GetPresContext();
|
|
}
|
|
|
|
NS_HIDDEN_(nsChangeHint)
|
|
ReResolveStyleContext(nsPresContext *aPresContext,
|
|
nsIFrame *aFrame,
|
|
nsIContent *aParentContent,
|
|
nsStyleChangeList *aChangeList,
|
|
nsChangeHint aMinChange);
|
|
};
|
|
|
|
#endif
|