mirror of
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1363 lines
66 KiB
C++
1363 lines
66 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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/*
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* construction of a frame tree that is nearly isomorphic to the content
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* tree and updating of that tree in response to dynamic changes
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*/
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#ifndef nsCSSFrameConstructor_h___
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#define nsCSSFrameConstructor_h___
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#include "nsCOMPtr.h"
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#include "nsILayoutHistoryState.h"
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#include "nsIXBLService.h"
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#include "nsQuoteList.h"
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#include "nsCounterManager.h"
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#include "nsDataHashtable.h"
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#include "nsHashKeys.h"
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#include "nsThreadUtils.h"
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#include "nsPageContentFrame.h"
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#include "nsIViewManager.h"
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class nsIDocument;
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struct nsFrameItems;
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struct nsAbsoluteItems;
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class nsStyleContext;
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struct nsStyleContent;
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struct nsStyleDisplay;
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class nsIPresShell;
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class nsVoidArray;
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class nsFrameManager;
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class nsIDOMHTMLSelectElement;
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class nsPresContext;
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class nsStyleChangeList;
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class nsIFrame;
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struct nsGenConInitializer;
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struct nsFindFrameHint
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{
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nsIFrame *mPrimaryFrameForPrevSibling; // weak ref to the primary frame for the content for which we need a frame
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nsFindFrameHint() : mPrimaryFrameForPrevSibling(nsnull) { }
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};
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typedef void (nsLazyFrameConstructionCallback)
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(nsIContent* aContent, nsIFrame* aFrame, void* aArg);
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class nsFrameConstructorState;
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class nsFrameConstructorSaveState;
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class nsCSSFrameConstructor
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{
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public:
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nsCSSFrameConstructor(nsIDocument *aDocument, nsIPresShell* aPresShell);
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~nsCSSFrameConstructor(void) {
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NS_ASSERTION(mUpdateCount == 0, "Dying in the middle of our own update?");
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NS_ASSERTION(mFocusSuppressCount == 0, "Focus suppression will be wrong");
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}
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// Maintain global objects - gXBLService
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static nsIXBLService * GetXBLService();
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static void ReleaseGlobals() { NS_IF_RELEASE(gXBLService); }
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// get the alternate text for a content node
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static void GetAlternateTextFor(nsIContent* aContent,
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nsIAtom* aTag, // content object's tag
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nsXPIDLString& aAltText);
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private:
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// These are not supported and are not implemented!
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nsCSSFrameConstructor(const nsCSSFrameConstructor& aCopy);
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nsCSSFrameConstructor& operator=(const nsCSSFrameConstructor& aCopy);
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public:
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// XXXbz this method needs to actually return errors!
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nsresult ConstructRootFrame(nsIContent* aDocElement,
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nsIFrame** aNewFrame);
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nsresult ReconstructDocElementHierarchy();
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nsresult ContentAppended(nsIContent* aContainer,
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PRInt32 aNewIndexInContainer);
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nsresult ContentInserted(nsIContent* aContainer,
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nsIContent* aChild,
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PRInt32 aIndexInContainer,
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nsILayoutHistoryState* aFrameState);
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nsresult ContentRemoved(nsIContent* aContainer,
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nsIContent* aChild,
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PRInt32 aIndexInContainer,
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PRBool* aDidReconstruct);
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nsresult CharacterDataChanged(nsIContent* aContent,
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PRBool aAppend);
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nsresult ContentStatesChanged(nsIContent* aContent1,
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nsIContent* aContent2,
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PRInt32 aStateMask);
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// Process the children of aContent and indicate that frames should be
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// created for them. This is used for lazily built content such as that
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// inside popups so that it is only created when the popup is opened.
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// If aIsSynch is true, this method constructs the frames synchronously.
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// aCallback will be called with three arguments, the first is the value
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// of aContent, the second is aContent's primary frame, and the third is
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// the value of aArg.
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// aCallback will always be called even if the children of aContent had
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// been generated earlier.
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nsresult AddLazyChildren(nsIContent* aContent,
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nsLazyFrameConstructionCallback* aCallback,
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void* aArg, PRBool aIsSynch = PR_FALSE);
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// Should be called when a frame is going to be destroyed and
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// WillDestroyFrameTree hasn't been called yet.
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void NotifyDestroyingFrame(nsIFrame* aFrame);
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nsresult AttributeChanged(nsIContent* aContent,
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PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType,
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PRUint32 aStateMask);
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void BeginUpdate();
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void EndUpdate();
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void RecalcQuotesAndCounters();
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void WillDestroyFrameTree(PRBool aDestroyingPresShell);
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// Get an integer that increments every time there is a style change
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// as a result of a change to the :hover content state.
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PRUint32 GetHoverGeneration() const { return mHoverGeneration; }
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// Note: It's the caller's responsibility to make sure to wrap a
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// ProcessRestyledFrames call in a view update batch and a script blocker.
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// This function does not call ProcessAttachedQueue() on the binding manager.
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// If the caller wants that to happen synchronously, it needs to handle that
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// itself.
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nsresult ProcessRestyledFrames(nsStyleChangeList& aRestyleArray);
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private:
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// Note: It's the caller's responsibility to make sure to wrap a
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// ProcessOneRestyle call in a view update batch.
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// This function does not call ProcessAttachedQueue() on the binding manager.
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// If the caller wants that to happen synchronously, it needs to handle that
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// itself.
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void ProcessOneRestyle(nsIContent* aContent, nsReStyleHint aRestyleHint,
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nsChangeHint aChangeHint);
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public:
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// Restyling for a ContentInserted (notification after insertion) or
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// for a CharacterDataChanged. |aContainer| must be non-null; when
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// the container is null, no work is needed.
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void RestyleForInsertOrChange(nsIContent* aContainer,
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nsIContent* aChild);
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// This would be the same as RestyleForInsertOrChange if we got the
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// notification before the removal. However, we get it after, so we
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// have to use the index. |aContainer| must be non-null; when the
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// container is null, no work is needed.
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void RestyleForRemove(nsIContent* aContainer, nsIContent* aOldChild,
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PRInt32 aIndexInContainer);
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// Same for a ContentAppended. |aContainer| must be non-null; when
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// the container is null, no work is needed.
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void RestyleForAppend(nsIContent* aContainer,
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PRInt32 aNewIndexInContainer);
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// Note: It's the caller's responsibility to make sure to wrap a
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// ProcessPendingRestyles call in a view update batch and a script blocker.
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// This function does not call ProcessAttachedQueue() on the binding manager.
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// If the caller wants that to happen synchronously, it needs to handle that
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// itself.
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void ProcessPendingRestyles();
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// Rebuilds all style data by throwing out the old rule tree and
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// building a new one, and additionally applying aExtraHint (which
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// must not contain nsChangeHint_ReconstructFrame) to the root frame.
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void RebuildAllStyleData(nsChangeHint aExtraHint);
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void PostRestyleEvent(nsIContent* aContent, nsReStyleHint aRestyleHint,
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nsChangeHint aMinChangeHint);
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private:
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void PostRestyleEventInternal();
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public:
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/**
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* Asynchronously clear style data from the root frame downwards and ensure
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* it will all be rebuilt. This is safe to call anytime; it will schedule
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* a restyle and take effect next time style changes are flushed.
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* This method is used to recompute the style data when some change happens
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* outside of any style rules, like a color preference change or a change
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* in a system font size, or to fix things up when an optimization in the
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* style data has become invalid. We assume that the root frame will not
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* need to be reframed.
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*/
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void PostRebuildAllStyleDataEvent(nsChangeHint aExtraHint);
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// Request to create a continuing frame
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nsresult CreateContinuingFrame(nsPresContext* aPresContext,
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nsIFrame* aFrame,
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nsIFrame* aParentFrame,
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nsIFrame** aContinuingFrame,
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PRBool aIsFluid = PR_TRUE);
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// Copy over fixed frames from aParentFrame's prev-in-flow
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nsresult ReplicateFixedFrames(nsPageContentFrame* aParentFrame);
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// Request to find the primary frame associated with a given content object.
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// This is typically called by the pres shell when there is no mapping in
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// the pres shell hash table
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nsresult FindPrimaryFrameFor(nsFrameManager* aFrameManager,
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nsIContent* aContent,
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nsIFrame** aFrame,
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nsFindFrameHint* aHint);
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// Get the XBL insertion point for a child
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nsresult GetInsertionPoint(nsIFrame* aParentFrame,
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nsIContent* aChildContent,
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nsIFrame** aInsertionPoint,
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PRBool* aMultiple = nsnull);
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nsresult CreateListBoxContent(nsPresContext* aPresContext,
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nsIFrame* aParentFrame,
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nsIFrame* aPrevFrame,
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nsIContent* aChild,
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nsIFrame** aResult,
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PRBool aIsAppend,
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PRBool aIsScrollbar,
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nsILayoutHistoryState* aFrameState);
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nsresult RemoveMappingsForFrameSubtree(nsIFrame* aRemovedFrame);
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// This is misnamed! This returns the outermost frame for the root element
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nsIFrame* GetInitialContainingBlock() { return mInitialContainingBlock; }
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// This returns the outermost frame for the root element
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nsIFrame* GetRootElementFrame() { return mInitialContainingBlock; }
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// This returns the frame for the root element that does not
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// have a psuedo-element style
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nsIFrame* GetRootElementStyleFrame() { return mRootElementStyleFrame; }
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nsIFrame* GetPageSequenceFrame() { return mPageSequenceFrame; }
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// Get the frame that is the parent of the root element.
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nsIFrame* GetDocElementContainingBlock()
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{ return mDocElementContainingBlock; }
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private:
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nsresult ReconstructDocElementHierarchyInternal();
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nsresult ReinsertContent(nsIContent* aContainer,
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nsIContent* aChild);
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nsresult ConstructPageFrame(nsIPresShell* aPresShell,
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nsPresContext* aPresContext,
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nsIFrame* aParentFrame,
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nsIFrame* aPrevPageFrame,
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nsIFrame*& aPageFrame,
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nsIFrame*& aCanvasFrame);
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void DoContentStateChanged(nsIContent* aContent,
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PRInt32 aStateMask);
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/* aMinHint is the minimal change that should be made to the element */
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void RestyleElement(nsIContent* aContent,
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nsIFrame* aPrimaryFrame,
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nsChangeHint aMinHint);
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void RestyleLaterSiblings(nsIContent* aContent);
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nsresult InitAndRestoreFrame (const nsFrameConstructorState& aState,
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nsIContent* aContent,
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nsIFrame* aParentFrame,
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nsIFrame* aPrevInFlow,
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nsIFrame* aNewFrame,
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PRBool aAllowCounters = PR_TRUE);
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already_AddRefed<nsStyleContext>
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ResolveStyleContext(nsIFrame* aParentFrame,
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nsIContent* aContent);
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nsresult ConstructFrame(nsFrameConstructorState& aState,
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nsIContent* aContent,
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nsIFrame* aParentFrame,
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nsFrameItems& aFrameItems);
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nsresult ConstructDocElementFrame(nsFrameConstructorState& aState,
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nsIContent* aDocElement,
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nsIFrame* aParentFrame,
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nsIFrame** aNewFrame);
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nsresult ConstructDocElementTableFrame(nsIContent* aDocElement,
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nsIFrame* aParentFrame,
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nsIFrame** aNewTableFrame,
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nsFrameConstructorState& aState);
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/**
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* CreateAttributeContent creates a single content/frame combination for an
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* |attr(foo)| generated content.
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*
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* @param aParentContent the parent content for the generated content
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* @param aParentFrame the parent frame for the generated frame
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* @param aAttrNamespace the namespace of the attribute in question
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* @param aAttrName the localname of the attribute
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* @param aStyleContext the style context to use
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* @param aGeneratedContent the array of generated content to append the
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* created content to.
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* @param [out] aNewContent the content node we create
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* @param [out] aNewFrame the new frame we create
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*/
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nsresult CreateAttributeContent(nsIContent* aParentContent,
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nsIFrame* aParentFrame,
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PRInt32 aAttrNamespace,
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nsIAtom* aAttrName,
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nsStyleContext* aStyleContext,
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nsCOMArray<nsIContent>& aGeneratedContent,
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nsIContent** aNewContent,
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nsIFrame** aNewFrame);
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/**
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* Create a text node containing the given string. If aText is non-null
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* then we also set aText to the returned node.
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*/
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already_AddRefed<nsIContent> CreateGenConTextNode(const nsString& aString,
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nsCOMPtr<nsIDOMCharacterData>* aText,
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nsGenConInitializer* aInitializer);
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/**
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* Create a content node for the given generated content style.
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* The caller takes care of making it SetNativeAnonymous, binding it
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* to the document, and creating frames for it.
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* @param aParentContent is the node that has the before/after style
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* @param aStyleContext is the 'before' or 'after' pseudo-element
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* style context
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* @param aContentIndex is the index of the content item to create
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*/
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already_AddRefed<nsIContent> CreateGeneratedContent(nsIContent* aParentContent,
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nsStyleContext* aStyleContext,
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PRUint32 aContentIndex);
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void CreateGeneratedContentFrame(nsFrameConstructorState& aState,
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nsIFrame* aFrame,
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nsIContent* aContent,
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nsStyleContext* aStyleContext,
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nsIAtom* aPseudoElement,
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nsFrameItems& aFrameItems);
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// This method can change aFrameList: it can chop off the end and
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// put it in a special sibling of aParentFrame. It can also change
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// aState by moving some floats out of it.
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nsresult AppendFrames(nsFrameConstructorState& aState,
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nsIContent* aContainer,
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nsIFrame* aParentFrame,
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nsFrameItems& aFrameList,
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nsIFrame* aAfterFrame);
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// BEGIN TABLE SECTION
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/**
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* ConstructTableFrame will construct the outer and inner table frames and
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* return them. Unless aIsPseudo is PR_TRUE, it will put the inner frame in
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* the child list of the outer frame, and will put any pseudo frames it had
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* to create into aChildItems. The newly-created outer frame will either be
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* in aChildItems or a descendant of a pseudo in aChildItems (unless it's
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* positioned or floated, in which case its placeholder will be in
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* aChildItems).
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*/
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nsresult ConstructTableFrame(nsFrameConstructorState& aState,
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nsIContent* aContent,
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nsIFrame* aContentParent,
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nsStyleContext* aStyleContext,
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PRInt32 aNameSpaceID,
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PRBool aIsPseudo,
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nsFrameItems& aChildItems,
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nsIFrame*& aNewOuterFrame,
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nsIFrame*& aNewInnerFrame);
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nsresult ConstructTableCaptionFrame(nsFrameConstructorState& aState,
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nsIContent* aContent,
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nsIFrame* aParent,
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nsStyleContext* aStyleContext,
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PRInt32 aNameSpaceID,
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nsFrameItems& aChildItems,
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nsIFrame*& aNewFrame,
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PRBool& aIsPseudoParent);
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nsresult ConstructTableRowGroupFrame(nsFrameConstructorState& aState,
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nsIContent* aContent,
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nsIFrame* aParent,
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nsStyleContext* aStyleContext,
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PRInt32 aNameSpaceID,
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PRBool aIsPseudo,
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nsFrameItems& aChildItems,
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nsIFrame*& aNewFrame,
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PRBool& aIsPseudoParent);
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nsresult ConstructTableColGroupFrame(nsFrameConstructorState& aState,
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|
nsIContent* aContent,
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nsIFrame* aParent,
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|
nsStyleContext* aStyleContext,
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PRInt32 aNameSpaceID,
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|
PRBool aIsPseudo,
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nsFrameItems& aChildItems,
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nsIFrame*& aNewFrame,
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PRBool& aIsPseudoParent);
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nsresult ConstructTableRowFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
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|
nsIFrame* aParent,
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|
nsStyleContext* aStyleContext,
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PRInt32 aNameSpaceID,
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|
PRBool aIsPseudo,
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nsFrameItems& aChildItems,
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|
nsIFrame*& aNewFrame,
|
|
PRBool& aIsPseudoParent);
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|
|
nsresult ConstructTableColFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
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nsIFrame* aParent,
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nsStyleContext* aStyleContext,
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PRInt32 aNameSpaceID,
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PRBool aIsPseudo,
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nsFrameItems& aChildItems,
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|
nsIFrame*& aNewFrame,
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PRBool& aIsPseudoParent);
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nsresult ConstructTableCellFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
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|
nsIFrame* aParentFrame,
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nsStyleContext* aStyleContext,
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PRInt32 aNameSpaceID,
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PRBool aIsPseudo,
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nsFrameItems& aChildItems,
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nsIFrame*& aNewCellOuterFrame,
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|
nsIFrame*& aNewCellInnerFrame,
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|
PRBool& aIsPseudoParent);
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|
|
nsresult CreatePseudoTableFrame(PRInt32 aNameSpaceID,
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|
nsFrameConstructorState& aState,
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nsIFrame* aParentFrameIn = nsnull);
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|
|
nsresult CreatePseudoRowGroupFrame(PRInt32 aNameSpaceID,
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|
nsFrameConstructorState& aState,
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|
nsIFrame* aParentFrameIn = nsnull);
|
|
|
|
nsresult CreatePseudoColGroupFrame(PRInt32 aNameSpaceID,
|
|
nsFrameConstructorState& aState,
|
|
nsIFrame* aParentFrameIn = nsnull);
|
|
|
|
nsresult CreatePseudoRowFrame(PRInt32 aNameSpaceID,
|
|
nsFrameConstructorState& aState,
|
|
nsIFrame* aParentFrameIn = nsnull);
|
|
|
|
nsresult CreatePseudoCellFrame(PRInt32 aNameSpaceID,
|
|
nsFrameConstructorState& aState,
|
|
nsIFrame* aParentFrameIn = nsnull);
|
|
|
|
nsresult GetPseudoTableFrame(PRInt32 aNameSpaceID,
|
|
nsFrameConstructorState& aState,
|
|
nsIFrame& aParentFrameIn);
|
|
|
|
nsresult GetPseudoColGroupFrame(PRInt32 aNameSpaceID,
|
|
nsFrameConstructorState& aState,
|
|
nsIFrame& aParentFrameIn);
|
|
|
|
nsresult GetPseudoRowGroupFrame(PRInt32 aNameSpaceID,
|
|
nsFrameConstructorState& aState,
|
|
nsIFrame& aParentFrameIn);
|
|
|
|
nsresult GetPseudoRowFrame(PRInt32 aNameSpaceID,
|
|
nsFrameConstructorState& aState,
|
|
nsIFrame& aParentFrameIn);
|
|
|
|
nsresult GetPseudoCellFrame(PRInt32 aNameSpaceID,
|
|
nsFrameConstructorState& aState,
|
|
nsIFrame& aParentFrameIn);
|
|
|
|
nsresult GetParentFrame(PRInt32 aNameSpaceID,
|
|
nsIFrame& aParentFrameIn,
|
|
nsIAtom* aChildFrameType,
|
|
nsFrameConstructorState& aState,
|
|
nsIFrame*& aParentFrame,
|
|
PRBool& aIsPseudoParent);
|
|
|
|
private:
|
|
/* A constructor function that just creates an nsIFrame object. The caller
|
|
is responsible for initializing the object, adding it to frame lists,
|
|
constructing frames for the children, etc.
|
|
|
|
@param nsIPresShell the presshell whose arena should be used to allocate
|
|
the frame.
|
|
@param nsStyleContext the style context to use for the frame. */
|
|
typedef nsIFrame* (* FrameCreationFunc)(nsIPresShell*, nsStyleContext*);
|
|
|
|
/* A function that can be used to get a FrameConstructionData. Such
|
|
a function is allowed to return null.
|
|
|
|
@param nsIContent the node for which the frame is being constructed.
|
|
@param nsStyleContext the style context to be used for the frame.
|
|
*/
|
|
struct FrameConstructionData;
|
|
typedef const FrameConstructionData*
|
|
(* FrameConstructionDataGetter)(nsIContent*, nsStyleContext*);
|
|
|
|
/* A constructor function that's used for complicated construction tasks.
|
|
This is expected to create the new frame, initialize it, add whatever
|
|
needs to be added to aFrameItems (XXXbz is that really necessary? Could
|
|
caller add? Might there be cases when *aNewFrame or its placeholder is
|
|
not the thing that ends up in aFrameItems? If not, would it be safe to do
|
|
the add into the frame construction state after processing kids? Look
|
|
into this as a followup!), process children as needed, etc. It is NOT
|
|
expected to deal with the primary frame map.
|
|
|
|
@param aState the frame construction state to use.
|
|
@param aContent the content node to construct the frame for.
|
|
@param aParentFrame the frame to set as the parent of the
|
|
newly-constructed frame.
|
|
@param aTag the content's XBL-resolved tag.
|
|
@param aStyleContext the style context to use for the new frame.
|
|
@param aFrameItems the frame list to add the new frame (or its
|
|
placeholder) to.
|
|
@param aFrame out param handing out the frame that was constructed. This
|
|
frame is what the caller will add to the primary frame map.
|
|
*/
|
|
typedef nsresult
|
|
(nsCSSFrameConstructor::* FrameFullConstructor)(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aTag,
|
|
nsStyleContext* aStyleContext,
|
|
const nsStyleDisplay* aStyleDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aFrame);
|
|
|
|
/* Bits that modify the way a FrameConstructionData is handled */
|
|
|
|
/* If the FCDATA_SKIP_FRAMEMAP bit is set, then the frame created should not
|
|
be added to the primary frame map */
|
|
#define FCDATA_SKIP_FRAMEMAP 0x1
|
|
/* If the FCDATA_FUNC_IS_DATA_GETTER bit is set, then the mFunc of the
|
|
FrameConstructionData is a getter function that can be used to get the
|
|
actual FrameConstructionData to use. */
|
|
#define FCDATA_FUNC_IS_DATA_GETTER 0x2
|
|
/* If the FCDATA_FUNC_IS_FULL_CTOR bit is set, then the FrameConstructionData
|
|
has an mFullConstructor. In this case, there is no relevant mData or
|
|
mFunc */
|
|
#define FCDATA_FUNC_IS_FULL_CTOR 0x4
|
|
/* If FCDATA_DISALLOW_OUT_OF_FLOW is set, do not allow the frame to
|
|
float or be absolutely positioned. This cannot be used with
|
|
FCDATA_FUNC_IS_FULL_CTOR */
|
|
#define FCDATA_DISALLOW_OUT_OF_FLOW 0x8
|
|
/* If FCDATA_FORCE_NULL_ABSPOS_CONTAINER is set, make sure to push a
|
|
null absolute containing block before processing children for this
|
|
frame. If this is not set, the frame will be pushed as the
|
|
absolute containing block as needed, based on its style */
|
|
#define FCDATA_FORCE_NULL_ABSPOS_CONTAINER 0x10
|
|
#ifdef MOZ_MATHML
|
|
/* If FCDATA_WRAP_KIDS_IN_BLOCKS is set, the inline kids of the frame
|
|
will be wrapped in blocks. This is only usable for MathML at the
|
|
moment. */
|
|
#define FCDATA_WRAP_KIDS_IN_BLOCKS 0x20
|
|
#endif
|
|
|
|
/* Structure representing information about how a frame should be
|
|
constructed. */
|
|
struct FrameConstructionData {
|
|
// Flag bits that can modify the way the construction happens
|
|
PRUint32 mBits;
|
|
// We have exactly one of three types of functions, so use a union for
|
|
// better cache locality for the ones that aren't pointer-to-member. That
|
|
// one needs to be separate, because we can't cast between it and the
|
|
// others and hence wouldn't be able to initialize the union without a
|
|
// constructor and all the resulting generated code. See documentation
|
|
// above for FrameCreationFunc, FrameConstructionDataGetter, and
|
|
// FrameFullConstructor to see what the functions would do.
|
|
union Func {
|
|
FrameCreationFunc mCreationFunc;
|
|
FrameConstructionDataGetter mDataGetter;
|
|
} mFunc;
|
|
FrameFullConstructor mFullConstructor;
|
|
};
|
|
|
|
/* Structure representing a mapping of an atom to a FrameConstructionData.
|
|
This can be used with non-static atoms, assuming that the nsIAtom* is
|
|
stored somewhere that this struct can point to (that is, a static
|
|
nsIAtom*) and that it's allocated before the struct is ever used. */
|
|
struct FrameConstructionDataByTag {
|
|
// Pointer to nsIAtom* is used because we want to initialize this
|
|
// statically, so before our atom tables are set up.
|
|
const nsIAtom * const * const mTag;
|
|
const FrameConstructionData mData;
|
|
};
|
|
|
|
/* Structure representing a mapping of an integer to a
|
|
FrameConstructionData. There are no magic integer values here. */
|
|
struct FrameConstructionDataByInt {
|
|
/* Could be used for display or whatever else */
|
|
const PRInt32 mInt;
|
|
const FrameConstructionData mData;
|
|
};
|
|
|
|
/* A function that takes an integer, content, style context, and array of
|
|
FrameConstructionDataByInts and finds the appropriate frame construction
|
|
data to use and returns it. This can return null if none of the integers
|
|
match or if the matching integer has a FrameConstructionDataGetter that
|
|
returns null. */
|
|
static const FrameConstructionData*
|
|
FindDataByInt(PRInt32 aInt, nsIContent* aContent,
|
|
nsStyleContext* aStyleContext,
|
|
const FrameConstructionDataByInt* aDataPtr,
|
|
PRUint32 aDataLength);
|
|
|
|
/* A function that takes a tag, content, style context, and array of
|
|
FrameConstructionDataByTags and finds the appropriate frame construction
|
|
data to use and returns it. This can return null if none of the tags
|
|
match or if the matching tag has a FrameConstructionDataGetter that
|
|
returns null. */
|
|
static const FrameConstructionData*
|
|
FindDataByTag(nsIAtom* aTag, nsIContent* aContent,
|
|
nsStyleContext* aStyleContext,
|
|
const FrameConstructionDataByTag* aDataPtr,
|
|
PRUint32 aDataLength);
|
|
|
|
/**
|
|
* Function to adjust aParentFrame and aFrameItems to deal with table
|
|
* pseudo-frames that may have to be inserted.
|
|
* @param aState the nsFrameConstructorState we're using.
|
|
* @param aChildContent the content node we want to construct a frame for
|
|
* @param aParentFrame the frame we think should be the parent. This will be
|
|
* adjusted to point to a pseudo-frame if needed.
|
|
* @param aTag tag that would be used for frame construction
|
|
* @param aNameSpaceID namespace that will be used for frame construction
|
|
* @param aChildStyle the style context for aChildContent
|
|
* @param aFrameItems the framelist we think we need to put the child frame
|
|
* into. If we have to construct pseudo-frames, we'll modify the
|
|
* pointer to point to the list the child frame should go into.
|
|
* @param aSaveState the nsFrameConstructorSaveState we can use for pushing a
|
|
* float containing block if we have to do it.
|
|
* @param aSuppressFrame whether we should not create a frame below this
|
|
* parent
|
|
* @param aCreatedPseudo whether we had to create a pseudo-parent
|
|
* @return NS_OK on success, NS_ERROR_OUT_OF_MEMORY and such as needed.
|
|
*/
|
|
// XXXbz this function should really go away once we rework pseudo-frame
|
|
// handling to be better. This should simply be part of the job of
|
|
// GetGeometricParent, and stuff like the frameitems and parent frame should
|
|
// be kept track of in the state...
|
|
nsresult AdjustParentFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aChildContent,
|
|
nsIFrame* & aParentFrame,
|
|
nsIAtom* aTag,
|
|
PRInt32 aNameSpaceID,
|
|
nsStyleContext* aChildStyle,
|
|
nsFrameItems* & aFrameItems,
|
|
nsFrameConstructorSaveState& aSaveState,
|
|
PRBool& aSuppressFrame,
|
|
PRBool& aCreatedPseudo);
|
|
|
|
// END TABLE SECTION
|
|
|
|
protected:
|
|
static nsresult CreatePlaceholderFrameFor(nsIPresShell* aPresShell,
|
|
nsIContent* aContent,
|
|
nsIFrame* aFrame,
|
|
nsStyleContext* aStyleContext,
|
|
nsIFrame* aParentFrame,
|
|
nsIFrame* aPrevInFlow,
|
|
nsIFrame** aPlaceholderFrame);
|
|
|
|
private:
|
|
// ConstructButtonFrame puts the new frame in aFrameItems and
|
|
// handles the kids of the button.
|
|
nsresult ConstructButtonFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aTag,
|
|
nsStyleContext* aStyleContext,
|
|
const nsStyleDisplay* aStyleDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aNewFrame);
|
|
|
|
// ConstructSelectFrame puts the new frame in aFrameItems and
|
|
// handles the kids of the select.
|
|
nsresult ConstructSelectFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aTag,
|
|
nsStyleContext* aStyleContext,
|
|
const nsStyleDisplay* aStyleDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aNewFrame);
|
|
|
|
// ConstructFieldSetFrame puts the new frame in aFrameItems and
|
|
// handles the kids of the fieldset
|
|
nsresult ConstructFieldSetFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aTag,
|
|
nsStyleContext* aStyleContext,
|
|
const nsStyleDisplay* aStyleDisplay,
|
|
nsFrameItems& aFrameItems,
|
|
nsIFrame** aNewFrame);
|
|
|
|
nsresult ConstructTextFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsStyleContext* aStyleContext,
|
|
nsFrameItems& aFrameItems,
|
|
PRBool aPseudoParent);
|
|
|
|
nsresult ConstructPageBreakFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsStyleContext* aStyleContext,
|
|
nsFrameItems& aFrameItems);
|
|
|
|
// Construct a page break frame if page-break-before:always is set in aStyleContext
|
|
// and add it to aFrameItems. Return true if page-break-after:always is set on aStyleContext.
|
|
// Don't do this for row groups, rows or cell, because tables handle those internally.
|
|
PRBool PageBreakBefore(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsStyleContext* aStyleContext,
|
|
nsFrameItems& aFrameItems);
|
|
|
|
static PRBool IsSpecialContent(nsIContent* aContent,
|
|
nsIAtom* aTag,
|
|
PRInt32 aNameSpaceID,
|
|
nsStyleContext* aStyleContext);
|
|
|
|
// Function to find FrameConstructionData for aContent. Will return
|
|
// null if aContent is not HTML.
|
|
static const FrameConstructionData* FindHTMLData(nsIContent* aContent,
|
|
nsIAtom* aTag,
|
|
PRInt32 aNameSpaceID,
|
|
nsStyleContext* aStyleContext);
|
|
// HTML data-finding helper functions
|
|
static const FrameConstructionData*
|
|
FindImgData(nsIContent* aContent, nsStyleContext* aStyleContext);
|
|
static const FrameConstructionData*
|
|
FindImgControlData(nsIContent* aContent, nsStyleContext* aStyleContext);
|
|
static const FrameConstructionData*
|
|
FindInputData(nsIContent* aContent, nsStyleContext* aStyleContext);
|
|
static const FrameConstructionData*
|
|
FindObjectData(nsIContent* aContent, nsStyleContext* aStyleContext);
|
|
|
|
/* Construct a frame from the given FrameConstructionData. This function
|
|
will handle adding the frame to frame lists, processing children, adding
|
|
it to the primary frame map, and so forth.
|
|
|
|
@param aData the FrameConstructionData to use.
|
|
@param aState the frame construction state to use.
|
|
@param aContent the content node to construct the frame for.
|
|
@param aParentFrame the frame to set as the parent of the
|
|
newly-constructed frame.
|
|
@param aTag the content's XBL-resolved tag.
|
|
@param aStyleContext the style context to use for the new frame.
|
|
@param aFrameItems the frame list to add the new frame (or its
|
|
placeholder) to.
|
|
@param aHasPseudoParent whether aParentFrame is a table pseudo-frame.
|
|
*/
|
|
nsresult ConstructFrameFromData(const FrameConstructionData* aData,
|
|
nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aTag,
|
|
nsStyleContext* aStyleContext,
|
|
nsFrameItems& aFrameItems,
|
|
PRBool aHasPseudoParent);
|
|
|
|
nsresult ConstructFrameInternal( nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aTag,
|
|
PRInt32 aNameSpaceID,
|
|
nsStyleContext* aStyleContext,
|
|
nsFrameItems& aFrameItems,
|
|
PRBool aXBLBaseTag);
|
|
|
|
nsresult CreateAnonymousFrames(nsIAtom* aTag,
|
|
nsFrameConstructorState& aState,
|
|
nsIContent* aParent,
|
|
nsIFrame* aNewFrame,
|
|
nsFrameItems& aChildItems,
|
|
PRBool aIsRoot = PR_FALSE);
|
|
|
|
nsresult CreateAnonymousFrames(nsFrameConstructorState& aState,
|
|
nsIContent* aParent,
|
|
nsIFrame* aParentFrame,
|
|
nsFrameItems& aChildItems);
|
|
|
|
//MathML Mod - RBS
|
|
#ifdef MOZ_MATHML
|
|
/**
|
|
* Takes the frames in aBlockItems and wraps them in a new anonymous block
|
|
* frame whose content is aContent and whose parent will be aParentFrame.
|
|
* The anonymous block is added to aNewItems and aBlockItems is cleared.
|
|
*/
|
|
nsresult FlushAccumulatedBlock(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsFrameItems* aBlockItems,
|
|
nsFrameItems* aNewItems);
|
|
|
|
// Function to find FrameConstructionData for aContent. Will return
|
|
// null if aContent is not MathML.
|
|
static const FrameConstructionData* FindMathMLData(nsIContent* aContent,
|
|
nsIAtom* aTag,
|
|
PRInt32 aNameSpaceID,
|
|
nsStyleContext* aStyleContext);
|
|
#endif
|
|
|
|
nsresult ConstructXULFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aTag,
|
|
PRInt32 aNameSpaceID,
|
|
nsStyleContext* aStyleContext,
|
|
nsFrameItems& aFrameItems,
|
|
PRBool aHasPseudoParent,
|
|
PRBool* aHaltProcessing);
|
|
|
|
// SVG - rods
|
|
#ifdef MOZ_SVG
|
|
nsresult ConstructSVGFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aTag,
|
|
PRInt32 aNameSpaceID,
|
|
nsStyleContext* aStyleContext,
|
|
nsFrameItems& aFrameItems,
|
|
PRBool aHasPseudoParent,
|
|
PRBool* aHaltProcessing);
|
|
#endif
|
|
|
|
nsresult ConstructFrameByDisplayType(nsFrameConstructorState& aState,
|
|
const nsStyleDisplay* aDisplay,
|
|
nsIContent* aContent,
|
|
PRInt32 aNameSpaceID,
|
|
nsIAtom* aTag,
|
|
nsIFrame* aParentFrame,
|
|
nsStyleContext* aStyleContext,
|
|
nsFrameItems& aFrameItems,
|
|
PRBool aHasPseudoParent);
|
|
|
|
/**
|
|
* Construct the frames for the children of aContent. "children" is defined
|
|
* as "whatever ChildIterator returns for aContent". This means we're
|
|
* basically operating on children in the "flattened tree" per sXBL/XBL2.
|
|
* This method will also handle constructing ::before, ::after,
|
|
* ::first-letter, and ::first-line frames, as needed and if allowed.
|
|
*
|
|
* If the parent is a float containing block, this method will handle pushing
|
|
* it as the float containing block in aState (so there's no need for callers
|
|
* to push it themselves).
|
|
*
|
|
* @param aState the frame construction state
|
|
* @param aContent the content node whose children need frames
|
|
* @param aStyleContext the style context for aContent
|
|
* @param aFrame the frame to use as the parent frame for the new in-flow
|
|
* kids. Note that this must be its own content insertion frame, but
|
|
* need not be be the primary frame for aContent. This frame will be
|
|
* pushed as the float containing block, as needed. aFrame is also
|
|
* used to find the parent style context for the kids' style contexts
|
|
* (not necessary aFrame's style context).
|
|
* @param aCanHaveGeneratedContent Whether to allow :before and
|
|
* :after styles on the parent.
|
|
* @param aFrameItems the list in which we should place the in-flow children
|
|
* @param aAllowBlockStyles Whether to allow first-letter and first-line
|
|
* styles on the parent.
|
|
* @param aTableCreator if non-null, will just make this method call
|
|
* TableProcessChildren between constructing the ::before and ::after
|
|
* content instead of doing whatever it would normally do.
|
|
*/
|
|
nsresult ProcessChildren(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsStyleContext* aStyleContext,
|
|
nsIFrame* aFrame,
|
|
PRBool aCanHaveGeneratedContent,
|
|
nsFrameItems& aFrameItems,
|
|
PRBool aAllowBlockStyles);
|
|
|
|
nsIFrame* GetFrameFor(nsIContent* aContent);
|
|
|
|
/**
|
|
* These two functions are used when we start frame creation from a non-root
|
|
* element. They should recreate the same state that we would have
|
|
* arrived at if we had built frames from the root frame to aFrame.
|
|
* Therefore, any calls to PushFloatContainingBlock and
|
|
* PushAbsoluteContainingBlock during frame construction should get
|
|
* corresponding logic in these functions.
|
|
*/
|
|
public:
|
|
nsIFrame* GetAbsoluteContainingBlock(nsIFrame* aFrame);
|
|
private:
|
|
nsIFrame* GetFloatContainingBlock(nsIFrame* aFrame);
|
|
|
|
nsIContent* PropagateScrollToViewport();
|
|
|
|
// Build a scroll frame:
|
|
// Calls BeginBuildingScrollFrame, InitAndRestoreFrame, and then FinishBuildingScrollFrame.
|
|
// Sets the primary frame for the content to the output aNewFrame.
|
|
// @param aNewFrame the created scrollframe --- output only
|
|
// @param aParentFrame the geometric parent that the scrollframe will have.
|
|
nsresult
|
|
BuildScrollFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsStyleContext* aContentStyle,
|
|
nsIFrame* aScrolledFrame,
|
|
nsIFrame* aParentFrame,
|
|
nsIFrame*& aNewFrame,
|
|
nsStyleContext*& aScrolledChildStyle);
|
|
|
|
// Builds the initial ScrollFrame
|
|
already_AddRefed<nsStyleContext>
|
|
BeginBuildingScrollFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsStyleContext* aContentStyle,
|
|
nsIFrame* aParentFrame,
|
|
nsIAtom* aScrolledPseudo,
|
|
PRBool aIsRoot,
|
|
nsIFrame*& aNewFrame);
|
|
|
|
// Completes the building of the scrollframe:
|
|
// Creates a view for the scrolledframe and makes it the child of the scrollframe.
|
|
void
|
|
FinishBuildingScrollFrame(nsIFrame* aScrollFrame,
|
|
nsIFrame* aScrolledFrame);
|
|
|
|
// InitializeSelectFrame puts scrollFrame in aFrameItems if aBuildCombobox is false
|
|
nsresult
|
|
InitializeSelectFrame(nsFrameConstructorState& aState,
|
|
nsIFrame* scrollFrame,
|
|
nsIFrame* scrolledFrame,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsStyleContext* aStyleContext,
|
|
PRBool aBuildCombobox,
|
|
nsFrameItems& aFrameItems);
|
|
|
|
nsresult MaybeRecreateFramesForContent(nsIContent* aContent);
|
|
|
|
nsresult RecreateFramesForContent(nsIContent* aContent);
|
|
|
|
// If removal of aFrame from the frame tree requires reconstruction of some
|
|
// containing block (either of aFrame or of its parent) due to {ib} splits,
|
|
// recreate the relevant containing block. The return value indicates
|
|
// whether this happened. If this method returns true, *aResult is the
|
|
// return value of ReframeContainingBlock. If this method returns false, the
|
|
// value of *aResult is no affected. aFrame and aResult must not be null.
|
|
// aFrame must be the result of a GetPrimaryFrameFor() call (which means its
|
|
// parent is also not null).
|
|
PRBool MaybeRecreateContainerForIBSplitterFrame(nsIFrame* aFrame,
|
|
nsresult* aResult);
|
|
|
|
nsresult CreateContinuingOuterTableFrame(nsIPresShell* aPresShell,
|
|
nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsIFrame* aParentFrame,
|
|
nsIContent* aContent,
|
|
nsStyleContext* aStyleContext,
|
|
nsIFrame** aContinuingFrame);
|
|
|
|
nsresult CreateContinuingTableFrame(nsIPresShell* aPresShell,
|
|
nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsIFrame* aParentFrame,
|
|
nsIContent* aContent,
|
|
nsStyleContext* aStyleContext,
|
|
nsIFrame** aContinuingFrame);
|
|
|
|
//----------------------------------------
|
|
|
|
// Methods support creating block frames and their children
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
GetFirstLetterStyle(nsIContent* aContent,
|
|
nsStyleContext* aStyleContext);
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
GetFirstLineStyle(nsIContent* aContent,
|
|
nsStyleContext* aStyleContext);
|
|
|
|
PRBool ShouldHaveFirstLetterStyle(nsIContent* aContent,
|
|
nsStyleContext* aStyleContext);
|
|
|
|
// Check whether a given block has first-letter style. Make sure to
|
|
// only pass in blocks! And don't pass in null either.
|
|
PRBool HasFirstLetterStyle(nsIFrame* aBlockFrame);
|
|
|
|
PRBool ShouldHaveFirstLineStyle(nsIContent* aContent,
|
|
nsStyleContext* aStyleContext);
|
|
|
|
void ShouldHaveSpecialBlockStyle(nsIContent* aContent,
|
|
nsStyleContext* aStyleContext,
|
|
PRBool* aHaveFirstLetterStyle,
|
|
PRBool* aHaveFirstLineStyle);
|
|
|
|
// |aContentParentFrame| should be null if it's really the same as
|
|
// |aParentFrame|.
|
|
// @param aFrameItems where we want to put the block in case it's in-flow.
|
|
// @param aNewFrame an in/out parameter. On input it is the block to be
|
|
// constructed. On output it is reset to the outermost
|
|
// frame constructed (e.g. if we need to wrap the block in an
|
|
// nsColumnSetFrame.
|
|
// @param aParentFrame is the desired parent for the (possibly wrapped)
|
|
// block
|
|
// @param aContentParent is the parent the block would have if it
|
|
// were in-flow
|
|
nsresult ConstructBlock(nsFrameConstructorState& aState,
|
|
const nsStyleDisplay* aDisplay,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsIFrame* aContentParentFrame,
|
|
nsStyleContext* aStyleContext,
|
|
nsIFrame** aNewFrame,
|
|
nsFrameItems& aFrameItems,
|
|
PRBool aAbsPosContainer);
|
|
|
|
nsresult ConstructInline(nsFrameConstructorState& aState,
|
|
const nsStyleDisplay* aDisplay,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame,
|
|
nsStyleContext* aStyleContext,
|
|
PRBool aIsPositioned,
|
|
nsIFrame* aNewFrame);
|
|
|
|
/**
|
|
* Move an already-constructed framelist into the inline frame at
|
|
* the tail end of an {ib} split. Creates said inline if it doesn't
|
|
* already exist.
|
|
*
|
|
* @param aState the frame construction state we're using right now.
|
|
* @param aExistingEndFrame if non-null, the already-existing end frame.
|
|
* @param aIsPositioned Whether the end frame should be positioned.
|
|
* @param aContent the content node for this {ib} split.
|
|
* @param aStyleContext the style context to use for the new frame
|
|
* @param aFramesToMove The frame list to move over
|
|
* @param aBlockPart the block part of the {ib} split.
|
|
* @param aTargetState if non-null, the target state to pass to
|
|
* MoveChildrenTo for float reparenting.
|
|
* XXXbz test float reparenting?
|
|
*
|
|
* @note aIsPositioned, aContent, aStyleContext, are
|
|
* only used if aExistingEndFrame is null.
|
|
*/
|
|
nsIFrame* MoveFramesToEndOfIBSplit(nsFrameConstructorState& aState,
|
|
nsIFrame* aExistingEndFrame,
|
|
PRBool aIsPositioned,
|
|
nsIContent* aContent,
|
|
nsStyleContext* aStyleContext,
|
|
nsIFrame* aFramesToMove,
|
|
nsIFrame* aBlockPart,
|
|
nsFrameConstructorState* aTargetState);
|
|
|
|
nsresult ProcessInlineChildren(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aFrame,
|
|
PRBool aCanHaveGeneratedContent,
|
|
nsFrameItems& aFrameItems,
|
|
PRBool* aKidsAllInline);
|
|
|
|
// Determine whether we need to wipe out what we just did and start over
|
|
// because we're doing something like adding block kids to an inline frame
|
|
// (and therefore need an {ib} split). If aIsAppend is true, aPrevSibling is
|
|
// ignored. Otherwise it may be used to determine whether to reframe when
|
|
// inserting into the block of an {ib} split.
|
|
// @return PR_TRUE if we reconstructed the containing block, PR_FALSE
|
|
// otherwise
|
|
PRBool WipeContainingBlock(nsFrameConstructorState& aState,
|
|
nsIFrame* aContainingBlock,
|
|
nsIFrame* aFrame,
|
|
const nsFrameItems& aFrameList,
|
|
PRBool aIsAppend,
|
|
nsIFrame* aPrevSibling);
|
|
|
|
nsresult ReframeContainingBlock(nsIFrame* aFrame);
|
|
|
|
nsresult StyleChangeReflow(nsIFrame* aFrame);
|
|
|
|
/** Helper function that searches the immediate child frames
|
|
* (and their children if the frames are "special")
|
|
* for a frame that maps the specified content object
|
|
*
|
|
* @param aParentFrame the primary frame for aParentContent
|
|
* @param aContent the content node for which we seek a frame
|
|
* @param aParentContent the parent for aContent
|
|
* @param aHint an optional hint used to make the search for aFrame faster
|
|
*/
|
|
nsIFrame* FindFrameWithContent(nsFrameManager* aFrameManager,
|
|
nsIFrame* aParentFrame,
|
|
nsIContent* aParentContent,
|
|
nsIContent* aContent,
|
|
nsFindFrameHint* aHint);
|
|
|
|
//----------------------------------------
|
|
|
|
// Methods support :first-letter style
|
|
|
|
void CreateFloatingLetterFrame(nsFrameConstructorState& aState,
|
|
nsIFrame* aBlockFrame,
|
|
nsIContent* aTextContent,
|
|
nsIFrame* aTextFrame,
|
|
nsIContent* aBlockContent,
|
|
nsIFrame* aParentFrame,
|
|
nsStyleContext* aStyleContext,
|
|
nsFrameItems& aResult);
|
|
|
|
nsresult CreateLetterFrame(nsIFrame* aBlockFrame,
|
|
nsIContent* aTextContent,
|
|
nsIFrame* aParentFrame,
|
|
nsFrameItems& aResult);
|
|
|
|
nsresult WrapFramesInFirstLetterFrame(nsIContent* aBlockContent,
|
|
nsIFrame* aBlockFrame,
|
|
nsFrameItems& aBlockFrames);
|
|
|
|
nsresult WrapFramesInFirstLetterFrame(nsIFrame* aBlockFrame,
|
|
nsIFrame* aParentFrame,
|
|
nsIFrame* aParentFrameList,
|
|
nsIFrame** aModifiedParent,
|
|
nsIFrame** aTextFrame,
|
|
nsIFrame** aPrevFrame,
|
|
nsFrameItems& aLetterFrame,
|
|
PRBool* aStopLooking);
|
|
|
|
nsresult RecoverLetterFrames(nsIFrame* aBlockFrame);
|
|
|
|
//
|
|
nsresult RemoveLetterFrames(nsPresContext* aPresContext,
|
|
nsIPresShell* aPresShell,
|
|
nsFrameManager* aFrameManager,
|
|
nsIFrame* aBlockFrame);
|
|
|
|
// Recursive helper for RemoveLetterFrames
|
|
nsresult RemoveFirstLetterFrames(nsPresContext* aPresContext,
|
|
nsIPresShell* aPresShell,
|
|
nsFrameManager* aFrameManager,
|
|
nsIFrame* aFrame,
|
|
PRBool* aStopLooking);
|
|
|
|
// Special remove method for those pesky floating first-letter frames
|
|
nsresult RemoveFloatingFirstLetterFrames(nsPresContext* aPresContext,
|
|
nsIPresShell* aPresShell,
|
|
nsFrameManager* aFrameManager,
|
|
nsIFrame* aBlockFrame,
|
|
PRBool* aStopLooking);
|
|
|
|
// Capture state for the frame tree rooted at the frame associated with the
|
|
// content object, aContent
|
|
nsresult CaptureStateForFramesOf(nsIContent* aContent,
|
|
nsILayoutHistoryState* aHistoryState);
|
|
|
|
// Capture state for the frame tree rooted at aFrame.
|
|
nsresult CaptureStateFor(nsIFrame* aFrame,
|
|
nsILayoutHistoryState* aHistoryState);
|
|
|
|
//----------------------------------------
|
|
|
|
// Methods support :first-line style
|
|
|
|
nsresult WrapFramesInFirstLineFrame(nsFrameConstructorState& aState,
|
|
nsIContent* aBlockContent,
|
|
nsIFrame* aBlockFrame,
|
|
nsFrameItems& aFrameItems);
|
|
|
|
nsresult AppendFirstLineFrames(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aBlockFrame,
|
|
nsFrameItems& aFrameItems);
|
|
|
|
nsresult InsertFirstLineFrames(nsFrameConstructorState& aState,
|
|
nsIContent* aContent,
|
|
nsIFrame* aBlockFrame,
|
|
nsIFrame** aParentFrame,
|
|
nsIFrame* aPrevSibling,
|
|
nsFrameItems& aFrameItems);
|
|
|
|
nsresult RemoveFixedItems(const nsFrameConstructorState& aState,
|
|
nsIFrame* aRootElementFrame);
|
|
|
|
// Find the right frame to use for aContent when looking for sibling
|
|
// frames for aTargetContent. If aPrevSibling is true, this
|
|
// will look for last continuations, etc, as necessary. This calls
|
|
// IsValidSibling as needed; if that returns false it returns null.
|
|
//
|
|
// @param aTargetContentDisplay the CSS display enum for aTargetContent if
|
|
// already known, UNSET_DISPLAY otherwise.
|
|
nsIFrame* FindFrameForContentSibling(nsIContent* aContent,
|
|
nsIContent* aTargetContent,
|
|
PRUint8& aTargetContentDisplay,
|
|
PRBool aPrevSibling);
|
|
|
|
// Find the ``rightmost'' frame for the content immediately preceding
|
|
// aIndexInContainer, following continuations if necessary.
|
|
nsIFrame* FindPreviousSibling(nsIContent* aContainer,
|
|
PRInt32 aIndexInContainer,
|
|
nsIContent* aChild);
|
|
|
|
// Find the frame for the content node immediately following aIndexInContainer.
|
|
nsIFrame* FindNextSibling(nsIContent* aContainer,
|
|
PRInt32 aIndexInContainer,
|
|
nsIContent* aChild);
|
|
|
|
// see if aContent and aSibling are legitimate siblings due to restrictions
|
|
// imposed by table columns
|
|
// XXXbz this code is generally wrong, since the frame for aContent
|
|
// may be constructed based on tag, not based on aDisplay!
|
|
PRBool IsValidSibling(nsIFrame* aSibling,
|
|
nsIContent* aContent,
|
|
PRUint8& aDisplay);
|
|
|
|
/**
|
|
* Find the ``rightmost'' frame for the anonymous content immediately
|
|
* preceding aChild, following continuation if necessary.
|
|
*/
|
|
nsIFrame*
|
|
FindPreviousAnonymousSibling(nsIContent* aContainer,
|
|
nsIContent* aChild);
|
|
|
|
/**
|
|
* Find the frame for the anonymous content immediately following
|
|
* aChild.
|
|
*/
|
|
nsIFrame*
|
|
FindNextAnonymousSibling(nsIContent* aContainer,
|
|
nsIContent* aChild);
|
|
|
|
void QuotesDirty() {
|
|
NS_PRECONDITION(mUpdateCount != 0, "Instant quote updates are bad news");
|
|
mQuotesDirty = PR_TRUE;
|
|
}
|
|
|
|
void CountersDirty() {
|
|
NS_PRECONDITION(mUpdateCount != 0, "Instant counter updates are bad news");
|
|
mCountersDirty = PR_TRUE;
|
|
}
|
|
|
|
public:
|
|
struct RestyleData;
|
|
friend struct RestyleData;
|
|
|
|
struct RestyleData {
|
|
nsReStyleHint mRestyleHint; // What we want to restyle
|
|
nsChangeHint mChangeHint; // The minimal change hint for "self"
|
|
};
|
|
|
|
struct RestyleEnumerateData : public RestyleData {
|
|
nsCOMPtr<nsIContent> mContent;
|
|
};
|
|
|
|
class RestyleEvent;
|
|
friend class RestyleEvent;
|
|
|
|
class RestyleEvent : public nsRunnable {
|
|
public:
|
|
NS_DECL_NSIRUNNABLE
|
|
RestyleEvent(nsCSSFrameConstructor *aConstructor)
|
|
: mConstructor(aConstructor) {
|
|
NS_PRECONDITION(aConstructor, "Must have a constructor!");
|
|
}
|
|
void Revoke() { mConstructor = nsnull; }
|
|
private:
|
|
nsCSSFrameConstructor *mConstructor;
|
|
};
|
|
|
|
friend class nsFrameConstructorState;
|
|
|
|
private:
|
|
|
|
class LazyGenerateChildrenEvent;
|
|
friend class LazyGenerateChildrenEvent;
|
|
|
|
// See comments of nsCSSFrameConstructor::AddLazyChildren()
|
|
class LazyGenerateChildrenEvent : public nsRunnable {
|
|
public:
|
|
NS_DECL_NSIRUNNABLE
|
|
LazyGenerateChildrenEvent(nsIContent *aContent,
|
|
nsIPresShell *aPresShell,
|
|
nsLazyFrameConstructionCallback* aCallback,
|
|
void* aArg)
|
|
: mContent(aContent), mPresShell(aPresShell), mCallback(aCallback), mArg(aArg)
|
|
{}
|
|
|
|
private:
|
|
nsCOMPtr<nsIContent> mContent;
|
|
nsCOMPtr<nsIPresShell> mPresShell;
|
|
nsLazyFrameConstructionCallback* mCallback;
|
|
void* mArg;
|
|
};
|
|
|
|
nsIDocument* mDocument; // Weak ref
|
|
nsIPresShell* mPresShell; // Weak ref
|
|
|
|
// See the comment at the start of ConstructRootFrame for more details
|
|
// about the following frames.
|
|
|
|
// This is not the real CSS 2.1 "initial containing block"! It is just
|
|
// the outermost frame for the root element.
|
|
nsIFrame* mInitialContainingBlock;
|
|
// This is the frame for the root element that has no pseudo-element style.
|
|
nsIFrame* mRootElementStyleFrame;
|
|
// This is the containing block for fixed-pos frames --- the viewport
|
|
nsIFrame* mFixedContainingBlock;
|
|
// This is the containing block that contains the root element ---
|
|
// the real "initial containing block" according to CSS 2.1.
|
|
nsIFrame* mDocElementContainingBlock;
|
|
nsIFrame* mGfxScrollFrame;
|
|
nsIFrame* mPageSequenceFrame;
|
|
nsQuoteList mQuoteList;
|
|
nsCounterManager mCounterManager;
|
|
PRUint16 mUpdateCount;
|
|
PRUint32 mFocusSuppressCount;
|
|
PRPackedBool mQuotesDirty : 1;
|
|
PRPackedBool mCountersDirty : 1;
|
|
PRPackedBool mIsDestroyingFrameTree : 1;
|
|
PRPackedBool mRebuildAllStyleData : 1;
|
|
// This is true if mDocElementContainingBlock supports absolute positioning
|
|
PRPackedBool mHasRootAbsPosContainingBlock : 1;
|
|
PRUint32 mHoverGeneration;
|
|
nsChangeHint mRebuildAllExtraHint;
|
|
|
|
nsRevocableEventPtr<RestyleEvent> mRestyleEvent;
|
|
|
|
nsCOMPtr<nsILayoutHistoryState> mTempFrameTreeState;
|
|
|
|
nsDataHashtable<nsISupportsHashKey, RestyleData> mPendingRestyles;
|
|
|
|
static nsIXBLService * gXBLService;
|
|
};
|
|
|
|
#endif /* nsCSSFrameConstructor_h___ */
|