344 lines
10 KiB
C++
344 lines
10 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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#include "nsHTMLParts.h"
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#include "nsContainerFrame.h"
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#include "nsCSSRendering.h"
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#include "nsIDocument.h"
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#include "nsPresContext.h"
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#include "nsViewsCID.h"
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#include "nsIView.h"
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#include "nsIViewManager.h"
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#include "nsIWidget.h"
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#include "nsPageFrame.h"
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#include "nsIRenderingContext.h"
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#include "nsGUIEvent.h"
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#include "nsIDOMEvent.h"
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#include "nsStyleConsts.h"
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#include "nsIViewManager.h"
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#include "nsHTMLAtoms.h"
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#include "nsIEventStateManager.h"
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#include "nsIDeviceContext.h"
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#include "nsIScrollableView.h"
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#include "nsLayoutAtoms.h"
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#include "nsIPresShell.h"
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#include "nsBoxFrame.h"
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#include "nsStackLayout.h"
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#include "nsIRootBox.h"
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#include "nsIContent.h"
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#include "nsXULTooltipListener.h"
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// Interface IDs
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//#define DEBUG_REFLOW
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class nsRootBoxFrame : public nsBoxFrame, public nsIRootBox {
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public:
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friend nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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nsRootBoxFrame(nsIPresShell* aShell, nsStyleContext *aContext);
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NS_DECL_ISUPPORTS_INHERITED
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virtual nsIFrame* GetPopupSetFrame();
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virtual void SetPopupSetFrame(nsIFrame* aPopupSet);
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virtual nsIContent* GetDefaultTooltip();
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virtual void SetDefaultTooltip(nsIContent* aTooltip);
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virtual nsresult AddTooltipSupport(nsIContent* aNode);
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virtual nsresult RemoveTooltipSupport(nsIContent* aNode);
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NS_IMETHOD AppendFrames(nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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NS_IMETHOD RemoveFrame(nsIAtom* aListName,
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nsIFrame* aOldFrame);
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NS_IMETHOD Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD HandleEvent(nsPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus);
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NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists);
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/**
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* Get the "type" of the frame
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*
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* @see nsLayoutAtoms::rootFrame
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*/
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virtual nsIAtom* GetType() const;
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const;
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#endif
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nsIFrame* mPopupSetFrame;
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protected:
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nsIContent* mDefaultTooltip;
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};
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//----------------------------------------------------------------------
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nsIFrame*
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NS_NewRootBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsRootBoxFrame (aPresShell, aContext);
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}
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nsRootBoxFrame::nsRootBoxFrame(nsIPresShell* aShell, nsStyleContext* aContext):
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nsBoxFrame(aShell, aContext, PR_TRUE)
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{
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mPopupSetFrame = nsnull;
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nsCOMPtr<nsIBoxLayout> layout;
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NS_NewStackLayout(aShell, layout);
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SetLayoutManager(layout);
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}
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NS_IMETHODIMP
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nsRootBoxFrame::AppendFrames(nsIAtom* aListName,
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nsIFrame* aFrameList)
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{
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nsresult rv;
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NS_ASSERTION(!aListName, "unexpected child list name");
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NS_PRECONDITION(mFrames.IsEmpty(), "already have a child frame");
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if (aListName) {
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// We only support unnamed principal child list
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rv = NS_ERROR_INVALID_ARG;
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} else if (!mFrames.IsEmpty()) {
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// We only allow a single child frame
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rv = NS_ERROR_FAILURE;
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} else {
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rv = nsBoxFrame::AppendFrames(aListName, aFrameList);
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}
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return rv;
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}
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NS_IMETHODIMP
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nsRootBoxFrame::InsertFrames(nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList)
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{
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nsresult rv;
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// Because we only support a single child frame inserting is the same
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// as appending
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NS_PRECONDITION(!aPrevFrame, "unexpected previous sibling frame");
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if (aPrevFrame) {
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rv = NS_ERROR_UNEXPECTED;
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} else {
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rv = AppendFrames(aListName, aFrameList);
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}
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return rv;
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}
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NS_IMETHODIMP
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nsRootBoxFrame::RemoveFrame(nsIAtom* aListName,
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nsIFrame* aOldFrame)
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{
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nsresult rv;
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NS_ASSERTION(!aListName, "unexpected child list name");
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if (aListName) {
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// We only support the unnamed principal child list
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rv = NS_ERROR_INVALID_ARG;
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} else if (aOldFrame == mFrames.FirstChild()) {
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rv = nsBoxFrame::RemoveFrame(aListName, aOldFrame);
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} else {
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rv = NS_ERROR_FAILURE;
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}
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return rv;
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}
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#ifdef DEBUG_REFLOW
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PRInt32 gReflows = 0;
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#endif
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NS_IMETHODIMP
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nsRootBoxFrame::Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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DO_GLOBAL_REFLOW_COUNT("nsRootBoxFrame", aReflowState.reason);
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#ifdef DEBUG_REFLOW
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gReflows++;
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printf("----Reflow %d----\n", gReflows);
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#endif
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return nsBoxFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
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}
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nsresult
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nsRootBoxFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists)
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{
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// root boxes don't need a debug border/outline or a selection overlay...
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// They *may* have a background propagated to them, so force creation
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// of a background display list element.
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nsresult rv = DisplayBorderBackgroundOutline(aBuilder, aLists, PR_TRUE);
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NS_ENSURE_SUCCESS(rv, rv);
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return BuildDisplayListForChildren(aBuilder, aDirtyRect, aLists);
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}
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NS_IMETHODIMP
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nsRootBoxFrame::HandleEvent(nsPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus)
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{
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NS_ENSURE_ARG_POINTER(aEventStatus);
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if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
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return NS_OK;
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}
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if (aEvent->message == NS_MOUSE_LEFT_BUTTON_UP ||
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aEvent->message == NS_MOUSE_MIDDLE_BUTTON_UP ||
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aEvent->message == NS_MOUSE_RIGHT_BUTTON_UP) {
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nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
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}
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return NS_OK;
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}
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// REVIEW: The override here was doing nothing since nsBoxFrame is our
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// parent class
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nsIAtom*
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nsRootBoxFrame::GetType() const
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{
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return nsLayoutAtoms::rootFrame;
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}
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nsIFrame*
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nsRootBoxFrame::GetPopupSetFrame()
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{
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return mPopupSetFrame;
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}
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void
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nsRootBoxFrame::SetPopupSetFrame(nsIFrame* aPopupSet)
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{
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// Under normal conditions this should only be called once. However,
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// if something triggers ReconstructDocElementHierarchy, we will
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// destroy this frame's child (the nsDocElementBoxFrame), but not this
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// frame. This will cause the popupset to remove itself by calling
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// |SetPopupSetFrame(nsnull)|, and then we'll be able to accept a new
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// popupset. Since the anonymous content is associated with the
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// nsDocElementBoxFrame, we'll get a new popupset when the new doc
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// element box frame is created.
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if (!mPopupSetFrame || !aPopupSet) {
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mPopupSetFrame = aPopupSet;
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} else {
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NS_NOTREACHED("Popup set is already defined! Only 1 allowed.");
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}
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}
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nsIContent*
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nsRootBoxFrame::GetDefaultTooltip()
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{
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return mDefaultTooltip;
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}
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void
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nsRootBoxFrame::SetDefaultTooltip(nsIContent* aTooltip)
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{
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mDefaultTooltip = aTooltip;
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}
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nsresult
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nsRootBoxFrame::AddTooltipSupport(nsIContent* aNode)
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{
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// listener will be refcounted by dom event targets that
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// it will add itself to, and destroyed when those targets
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// are destroyed
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nsXULTooltipListener* listener = new nsXULTooltipListener();
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if (!listener)
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return NS_ERROR_OUT_OF_MEMORY;
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listener->Init(aNode, this);
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return NS_OK;
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}
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nsresult
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nsRootBoxFrame::RemoveTooltipSupport(nsIContent* aNode)
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{
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// XXjh yuck, I'll have to implement a way to get at
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// the tooltip listener for a given node to make
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// this work. Not crucial, we aren't removing
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// tooltips from any nodes in the app just yet.
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP_(nsrefcnt)
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nsRootBoxFrame::AddRef(void)
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{
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return NS_OK;
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}
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NS_IMETHODIMP_(nsrefcnt)
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nsRootBoxFrame::Release(void)
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{
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return NS_OK;
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}
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NS_INTERFACE_MAP_BEGIN(nsRootBoxFrame)
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NS_INTERFACE_MAP_ENTRY(nsIRootBox)
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NS_INTERFACE_MAP_END_INHERITING(nsBoxFrame)
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#ifdef DEBUG
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NS_IMETHODIMP
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nsRootBoxFrame::GetFrameName(nsAString& aResult) const
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{
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return MakeFrameName(NS_LITERAL_STRING("RootBox"), aResult);
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}
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#endif
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