michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: //
michael@0: // Eric Vaughan
michael@0: // Netscape Communications
michael@0: //
michael@0: // See documentation in associated header file
michael@0: //
michael@0: 
michael@0: #include "nsDeckFrame.h"
michael@0: #include "nsStyleContext.h"
michael@0: #include "nsPresContext.h"
michael@0: #include "nsIContent.h"
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsNameSpaceManager.h"
michael@0: #include "nsGkAtoms.h"
michael@0: #include "nsHTMLParts.h"
michael@0: #include "nsIPresShell.h"
michael@0: #include "nsCSSRendering.h"
michael@0: #include "nsViewManager.h"
michael@0: #include "nsBoxLayoutState.h"
michael@0: #include "nsStackLayout.h"
michael@0: #include "nsDisplayList.h"
michael@0: #include "nsContainerFrame.h"
michael@0: 
michael@0: #ifdef ACCESSIBILITY
michael@0: #include "nsAccessibilityService.h"
michael@0: #endif
michael@0: 
michael@0: nsIFrame*
michael@0: NS_NewDeckFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
michael@0: {
michael@0:   return new (aPresShell) nsDeckFrame(aPresShell, aContext);
michael@0: }
michael@0: 
michael@0: NS_IMPL_FRAMEARENA_HELPERS(nsDeckFrame)
michael@0: 
michael@0: NS_QUERYFRAME_HEAD(nsDeckFrame)
michael@0:   NS_QUERYFRAME_ENTRY(nsDeckFrame)
michael@0: NS_QUERYFRAME_TAIL_INHERITING(nsBoxFrame)
michael@0: 
michael@0: 
michael@0: nsDeckFrame::nsDeckFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
michael@0:   : nsBoxFrame(aPresShell, aContext), mIndex(0)
michael@0: {
michael@0:   nsCOMPtr<nsBoxLayout> layout;
michael@0:   NS_NewStackLayout(aPresShell, layout);
michael@0:   SetLayoutManager(layout);
michael@0: }
michael@0: 
michael@0: nsIAtom*
michael@0: nsDeckFrame::GetType() const
michael@0: {
michael@0:   return nsGkAtoms::deckFrame;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsDeckFrame::AttributeChanged(int32_t         aNameSpaceID,
michael@0:                               nsIAtom*        aAttribute,
michael@0:                               int32_t         aModType)
michael@0: {
michael@0:   nsresult rv = nsBoxFrame::AttributeChanged(aNameSpaceID, aAttribute,
michael@0:                                              aModType);
michael@0: 
michael@0: 
michael@0:    // if the index changed hide the old element and make the new element visible
michael@0:   if (aAttribute == nsGkAtoms::selectedIndex) {
michael@0:     IndexChanged();
michael@0:   }
michael@0: 
michael@0:   return rv;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsDeckFrame::Init(nsIContent*     aContent,
michael@0:                   nsIFrame*       aParent,
michael@0:                   nsIFrame*       aPrevInFlow)
michael@0: {
michael@0:   nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
michael@0: 
michael@0:   mIndex = GetSelectedIndex();
michael@0: }
michael@0: 
michael@0: void
michael@0: nsDeckFrame::HideBox(nsIFrame* aBox)
michael@0: {
michael@0:   nsIPresShell::ClearMouseCapture(aBox);
michael@0: }
michael@0: 
michael@0: void
michael@0: nsDeckFrame::IndexChanged()
michael@0: {
michael@0:   //did the index change?
michael@0:   int32_t index = GetSelectedIndex();
michael@0:   if (index == mIndex)
michael@0:     return;
michael@0: 
michael@0:   // redraw
michael@0:   InvalidateFrame();
michael@0: 
michael@0:   // hide the currently showing box
michael@0:   nsIFrame* currentBox = GetSelectedBox();
michael@0:   if (currentBox) // only hide if it exists
michael@0:     HideBox(currentBox);
michael@0: 
michael@0:   mIndex = index;
michael@0: 
michael@0: #ifdef ACCESSIBILITY
michael@0:   nsAccessibilityService* accService = GetAccService();
michael@0:   if (accService) {
michael@0:     accService->DeckPanelSwitched(PresContext()->GetPresShell(), mContent,
michael@0:                                   currentBox, GetSelectedBox());
michael@0:   }
michael@0: #endif
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: nsDeckFrame::GetSelectedIndex()
michael@0: {
michael@0:   // default index is 0
michael@0:   int32_t index = 0;
michael@0: 
michael@0:   // get the index attribute
michael@0:   nsAutoString value;
michael@0:   if (mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::selectedIndex, value))
michael@0:   {
michael@0:     nsresult error;
michael@0: 
michael@0:     // convert it to an integer
michael@0:     index = value.ToInteger(&error);
michael@0:   }
michael@0: 
michael@0:   return index;
michael@0: }
michael@0: 
michael@0: nsIFrame* 
michael@0: nsDeckFrame::GetSelectedBox()
michael@0: {
michael@0:   return (mIndex >= 0) ? mFrames.FrameAt(mIndex) : nullptr; 
michael@0: }
michael@0: 
michael@0: void
michael@0: nsDeckFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
michael@0:                               const nsRect&           aDirtyRect,
michael@0:                               const nsDisplayListSet& aLists)
michael@0: {
michael@0:   // if a tab is hidden all its children are too.
michael@0:   if (!StyleVisibility()->mVisible)
michael@0:     return;
michael@0:     
michael@0:   nsBoxFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);
michael@0: }
michael@0: 
michael@0: void
michael@0: nsDeckFrame::BuildDisplayListForChildren(nsDisplayListBuilder*   aBuilder,
michael@0:                                          const nsRect&           aDirtyRect,
michael@0:                                          const nsDisplayListSet& aLists)
michael@0: {
michael@0:   // only paint the selected box
michael@0:   nsIFrame* box = GetSelectedBox();
michael@0:   if (!box)
michael@0:     return;
michael@0: 
michael@0:   // Putting the child in the background list. This is a little weird but
michael@0:   // it matches what we were doing before.
michael@0:   nsDisplayListSet set(aLists, aLists.BlockBorderBackgrounds());
michael@0:   BuildDisplayListForChild(aBuilder, box, aDirtyRect, set);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsDeckFrame::DoLayout(nsBoxLayoutState& aState)
michael@0: {
michael@0:   // Make sure we tweak the state so it does not resize our children.
michael@0:   // We will do that.
michael@0:   uint32_t oldFlags = aState.LayoutFlags();
michael@0:   aState.SetLayoutFlags(NS_FRAME_NO_SIZE_VIEW | NS_FRAME_NO_VISIBILITY);
michael@0: 
michael@0:   // do a normal layout
michael@0:   nsresult rv = nsBoxFrame::DoLayout(aState);
michael@0: 
michael@0:   // run though each child. Hide all but the selected one
michael@0:   nsIFrame* box = GetChildBox();
michael@0: 
michael@0:   nscoord count = 0;
michael@0:   while (box) 
michael@0:   {
michael@0:     // make collapsed children not show up
michael@0:     if (count != mIndex) 
michael@0:       HideBox(box);
michael@0: 
michael@0:     box = box->GetNextBox();
michael@0:     count++;
michael@0:   }
michael@0: 
michael@0:   aState.SetLayoutFlags(oldFlags);
michael@0: 
michael@0:   return rv;
michael@0: }
michael@0: