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nsDeckFrame.cpp
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nsDeckFrame.cpp
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
//
// Eric Vaughan
// Netscape Communications
//
// See documentation in associated header file
//
#include "nsDeckFrame.h"
#include "nsStyleContext.h"
#include "nsPresContext.h"
#include "nsIContent.h"
#include "nsCOMPtr.h"
#include "nsINameSpaceManager.h"
#include "nsGkAtoms.h"
#include "nsHTMLParts.h"
#include "nsIPresShell.h"
#include "nsCSSRendering.h"
#include "nsIViewManager.h"
#include "nsBoxLayoutState.h"
#include "nsStackLayout.h"
#include "nsDisplayList.h"
#include "nsHTMLContainerFrame.h"
nsIFrame*
NS_NewDeckFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsDeckFrame(aPresShell, aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsDeckFrame)
nsDeckFrame::nsDeckFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
: nsBoxFrame(aPresShell, aContext), mIndex(0)
{
nsCOMPtr<nsBoxLayout> layout;
NS_NewStackLayout(aPresShell, layout);
SetLayoutManager(layout);
}
nsIAtom*
nsDeckFrame::GetType() const
{
return nsGkAtoms::deckFrame;
}
NS_IMETHODIMP
nsDeckFrame::AttributeChanged(PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aModType)
{
nsresult rv = nsBoxFrame::AttributeChanged(aNameSpaceID, aAttribute,
aModType);
// if the index changed hide the old element and make the new element visible
if (aAttribute == nsGkAtoms::selectedIndex) {
IndexChanged(PresContext());
}
return rv;
}
NS_IMETHODIMP
nsDeckFrame::Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow)
{
nsresult rv = nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
mIndex = GetSelectedIndex();
return rv;
}
static void
CreateViewsForFrames(const nsFrameList& aFrames)
{
for (nsFrameList::Enumerator f(aFrames); !f.AtEnd(); f.Next()) {
nsContainerFrame::CreateViewForFrame(f.get(), PR_TRUE);
}
}
NS_IMETHODIMP
nsDeckFrame::SetInitialChildList(nsIAtom* aListName,
nsFrameList& aChildList)
{
CreateViewsForFrames(aChildList);
return nsBoxFrame::SetInitialChildList(aListName, aChildList);
}
NS_IMETHODIMP
nsDeckFrame::AppendFrames(nsIAtom* aListName,
nsFrameList& aFrameList)
{
CreateViewsForFrames(aFrameList);
return nsBoxFrame::AppendFrames(aListName, aFrameList);
}
NS_IMETHODIMP
nsDeckFrame::InsertFrames(nsIAtom* aListName,
nsIFrame* aPrevFrame,
nsFrameList& aFrameList)
{
CreateViewsForFrames(aFrameList);
return nsBoxFrame::InsertFrames(aListName, aPrevFrame, aFrameList);
}
void
nsDeckFrame::HideBox(nsPresContext* aPresContext, nsIBox* aBox)
{
nsIView* view = aBox->GetView();
if (view) {
nsIViewManager* viewManager = view->GetViewManager();
viewManager->SetViewVisibility(view, nsViewVisibility_kHide);
viewManager->ResizeView(view, nsRect(0, 0, 0, 0));
}
}
void
nsDeckFrame::ShowBox(nsPresContext* aPresContext, nsIBox* aBox)
{
nsRect rect = aBox->GetRect();
nsIView* view = aBox->GetView();
if (view) {
nsIViewManager* viewManager = view->GetViewManager();
rect.x = rect.y = 0;
viewManager->ResizeView(view, rect);
viewManager->SetViewVisibility(view, nsViewVisibility_kShow);
}
}
void
nsDeckFrame::IndexChanged(nsPresContext* aPresContext)
{
//did the index change?
PRInt32 index = GetSelectedIndex();
if (index == mIndex)
return;
// redraw
nsBoxLayoutState state(aPresContext);
Redraw(state);
// hide the currently showing box
nsIBox* currentBox = GetSelectedBox();
if (currentBox) // only hide if it exists
HideBox(aPresContext, currentBox);
mIndex = index;
// show the new box
nsIBox* newBox = GetSelectedBox();
if (newBox) // only show if it exists
ShowBox(aPresContext, newBox);
}
PRInt32
nsDeckFrame::GetSelectedIndex()
{
// default index is 0
PRInt32 index = 0;
// get the index attribute
nsAutoString value;
if (mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::selectedIndex, value))
{
PRInt32 error;
// convert it to an integer
index = value.ToInteger(&error);
}
return index;
}
nsIBox*
nsDeckFrame::GetSelectedBox()
{
return (mIndex >= 0) ? mFrames.FrameAt(mIndex) : nsnull;
}
NS_IMETHODIMP
nsDeckFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
// if a tab is hidden all its children are too.
if (!GetStyleVisibility()->mVisible)
return NS_OK;
// REVIEW: The old code skipped painting of background/borders/outline for this
// frame and painting of debug boxes ... I've put it back.
return nsBoxFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);
}
NS_IMETHODIMP
nsDeckFrame::BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
// only paint the selected box
nsIBox* box = GetSelectedBox();
if (!box)
return NS_OK;
// Putting the child in the background list. This is a little weird but
// it matches what we were doing before.
nsDisplayListSet set(aLists, aLists.BlockBorderBackgrounds());
return BuildDisplayListForChild(aBuilder, box, aDirtyRect, set);
}
NS_IMETHODIMP
nsDeckFrame::DoLayout(nsBoxLayoutState& aState)
{
// Make sure we tweak the state so it does not resize our children.
// We will do that.
PRUint32 oldFlags = aState.LayoutFlags();
aState.SetLayoutFlags(NS_FRAME_NO_SIZE_VIEW | NS_FRAME_NO_VISIBILITY);
// do a normal layout
nsresult rv = nsBoxFrame::DoLayout(aState);
// run though each child. Hide all but the selected one
nsIBox* box = GetChildBox();
nscoord count = 0;
while (box)
{
// make collapsed children not show up
if (count == mIndex)
ShowBox(aState.PresContext(), box);
else
HideBox(aState.PresContext(), box);
box = box->GetNextBox();
count++;
}
aState.SetLayoutFlags(oldFlags);
return rv;
}