The Tor Browser: layout/xul/nsDeckFrame.cpp@8bccb770b82d (annotated)

layout/xul/nsDeckFrame.cpp@8bccb770b82d (annotated)

layout/xul/nsDeckFrame.cpp

Wed, 31 Dec 2014 13:27:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 13:27:57 +0100
branch: TOR_BUG_3246
changeset 6: 8bccb770b82d
permissions: -rw-r--r--

Ignore runtime configuration files generated during quality assurance.

 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 //
 // 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 "nsNameSpaceManager.h"
 #include "nsGkAtoms.h"
 #include "nsHTMLParts.h"
 #include "nsIPresShell.h"
 #include "nsCSSRendering.h"
 #include "nsViewManager.h"
 #include "nsBoxLayoutState.h"
 #include "nsStackLayout.h"
 #include "nsDisplayList.h"
 #include "nsContainerFrame.h"
 #ifdef ACCESSIBILITY
 #include "nsAccessibilityService.h"
 #endif
 nsIFrame*
 NS_NewDeckFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
 {
   return new (aPresShell) nsDeckFrame(aPresShell, aContext);
 }
 NS_IMPL_FRAMEARENA_HELPERS(nsDeckFrame)
 NS_QUERYFRAME_HEAD(nsDeckFrame)
   NS_QUERYFRAME_ENTRY(nsDeckFrame)
 NS_QUERYFRAME_TAIL_INHERITING(nsBoxFrame)
 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;
 }
 nsresult
 nsDeckFrame::AttributeChanged(int32_t         aNameSpaceID,
                               nsIAtom*        aAttribute,
                               int32_t         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();
   }
   return rv;
 }
 void
 nsDeckFrame::Init(nsIContent*     aContent,
                   nsIFrame*       aParent,
                   nsIFrame*       aPrevInFlow)
 {
   nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
   mIndex = GetSelectedIndex();
 }
 void
 nsDeckFrame::HideBox(nsIFrame* aBox)
 {
   nsIPresShell::ClearMouseCapture(aBox);
 }
 void
 nsDeckFrame::IndexChanged()
 {
   //did the index change?
   int32_t index = GetSelectedIndex();
   if (index == mIndex)
     return;
   // redraw
   InvalidateFrame();
   // hide the currently showing box
   nsIFrame* currentBox = GetSelectedBox();
   if (currentBox) // only hide if it exists
     HideBox(currentBox);
   mIndex = index;
 #ifdef ACCESSIBILITY
   nsAccessibilityService* accService = GetAccService();
   if (accService) {
     accService->DeckPanelSwitched(PresContext()->GetPresShell(), mContent,
                                   currentBox, GetSelectedBox());
   }
 #endif
 }
 int32_t
 nsDeckFrame::GetSelectedIndex()
 {
   // default index is 0
   int32_t index = 0;
   // get the index attribute
   nsAutoString value;
   if (mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::selectedIndex, value))
   {
     nsresult error;
     // convert it to an integer
     index = value.ToInteger(&error);
   }
   return index;
 }
 nsIFrame*
 nsDeckFrame::GetSelectedBox()
 {
   return (mIndex >= 0) ? mFrames.FrameAt(mIndex) : nullptr;
 }
 void
 nsDeckFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
                               const nsRect&           aDirtyRect,
                               const nsDisplayListSet& aLists)
 {
   // if a tab is hidden all its children are too.
   if (!StyleVisibility()->mVisible)
     return;
   nsBoxFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);
 }
 void
 nsDeckFrame::BuildDisplayListForChildren(nsDisplayListBuilder*   aBuilder,
                                          const nsRect&           aDirtyRect,
                                          const nsDisplayListSet& aLists)
 {
   // only paint the selected box
   nsIFrame* box = GetSelectedBox();
   if (!box)
     return;
   // 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());
   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.
   uint32_t 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
   nsIFrame* box = GetChildBox();
   nscoord count = 0;
   while (box)
   {
     // make collapsed children not show up
     if (count != mIndex)
       HideBox(box);
     box = box->GetNextBox();
     count++;
   }
   aState.SetLayoutFlags(oldFlags);
   return rv;
 }

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layout/xul/nsDeckFrame.cpp@8bccb770b82d (annotated)

layout/xul/nsDeckFrame.cpp