LCOV - code coverage report
Current view: directory - layout/xul/base/src - nsScrollbarFrame.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 49 0 0.0 %
Date: 2012-06-02 Functions: 14 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla Communicator client code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      26                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : //
      39                 : // Eric Vaughan
      40                 : // Netscape Communications
      41                 : //
      42                 : // See documentation in associated header file
      43                 : //
      44                 : 
      45                 : #include "nsScrollbarFrame.h"
      46                 : #include "nsScrollbarButtonFrame.h"
      47                 : #include "nsGkAtoms.h"
      48                 : #include "nsIScrollableFrame.h"
      49                 : #include "nsIScrollbarMediator.h"
      50                 : 
      51                 : //
      52                 : // NS_NewToolbarFrame
      53                 : //
      54                 : // Creates a new Toolbar frame and returns it
      55                 : //
      56                 : nsIFrame*
      57               0 : NS_NewScrollbarFrame (nsIPresShell* aPresShell, nsStyleContext* aContext)
      58                 : {
      59               0 :   return new (aPresShell) nsScrollbarFrame (aPresShell, aContext);
      60                 : }
      61                 : 
      62               0 : NS_IMPL_FRAMEARENA_HELPERS(nsScrollbarFrame)
      63                 : 
      64               0 : NS_QUERYFRAME_HEAD(nsScrollbarFrame)
      65               0 :   NS_QUERYFRAME_ENTRY(nsScrollbarFrame)
      66               0 : NS_QUERYFRAME_TAIL_INHERITING(nsBoxFrame)
      67                 : 
      68                 : NS_IMETHODIMP
      69               0 : nsScrollbarFrame::Init(nsIContent* aContent,
      70                 :                        nsIFrame*   aParent,
      71                 :                        nsIFrame*   aPrevInFlow)
      72                 : {
      73               0 :   nsresult  rv = nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
      74                 : 
      75                 :   // We want to be a reflow root since we use reflows to move the
      76                 :   // slider.  Any reflow inside the scrollbar frame will be a reflow to
      77                 :   // move the slider and will thus not change anything outside of the
      78                 :   // scrollbar or change the size of the scrollbar frame.
      79               0 :   mState |= NS_FRAME_REFLOW_ROOT;
      80                 : 
      81               0 :   return rv;
      82                 : }
      83                 : 
      84                 : NS_IMETHODIMP
      85               0 : nsScrollbarFrame::Reflow(nsPresContext*          aPresContext,
      86                 :                          nsHTMLReflowMetrics&     aDesiredSize,
      87                 :                          const nsHTMLReflowState& aReflowState,
      88                 :                          nsReflowStatus&          aStatus)
      89                 : {
      90               0 :   nsresult rv = nsBoxFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
      91               0 :   NS_ENSURE_SUCCESS(rv, rv);
      92                 : 
      93                 :   // nsGfxScrollFrame may have told us to shrink to nothing. If so, make sure our
      94                 :   // desired size agrees.
      95               0 :   if (aReflowState.availableWidth == 0) {
      96               0 :     aDesiredSize.width = 0;
      97                 :   }
      98               0 :   if (aReflowState.availableHeight == 0) {
      99               0 :     aDesiredSize.height = 0;
     100                 :   }
     101                 : 
     102               0 :   return NS_OK;
     103                 : }
     104                 : 
     105                 : nsIAtom*
     106               0 : nsScrollbarFrame::GetType() const
     107                 : {
     108               0 :   return nsGkAtoms::scrollbarFrame;
     109                 : }
     110                 : 
     111                 : NS_IMETHODIMP
     112               0 : nsScrollbarFrame::AttributeChanged(PRInt32 aNameSpaceID,
     113                 :                                    nsIAtom* aAttribute,
     114                 :                                    PRInt32 aModType)
     115                 : {
     116                 :   nsresult rv = nsBoxFrame::AttributeChanged(aNameSpaceID, aAttribute,
     117               0 :                                              aModType);
     118                 : 
     119                 :   // if the current position changes, notify any nsGfxScrollFrame
     120                 :   // parent we may have
     121               0 :   if (aAttribute != nsGkAtoms::curpos)
     122               0 :     return rv;
     123                 : 
     124               0 :   nsIScrollableFrame* scrollable = do_QueryFrame(GetParent());
     125               0 :   if (!scrollable)
     126               0 :     return rv;
     127                 : 
     128               0 :   scrollable->CurPosAttributeChanged(mContent);
     129               0 :   return rv;
     130                 : }
     131                 : 
     132                 : NS_IMETHODIMP
     133               0 : nsScrollbarFrame::HandlePress(nsPresContext* aPresContext, 
     134                 :                      nsGUIEvent*     aEvent,
     135                 :                      nsEventStatus*  aEventStatus)
     136                 : {
     137               0 :   return NS_OK;
     138                 : }
     139                 : 
     140                 : NS_IMETHODIMP
     141               0 : nsScrollbarFrame::HandleMultiplePress(nsPresContext* aPresContext, 
     142                 :                                       nsGUIEvent*     aEvent,
     143                 :                                       nsEventStatus*  aEventStatus,
     144                 :                                       bool aControlHeld)
     145                 : {
     146               0 :   return NS_OK;
     147                 : }
     148                 : 
     149                 : NS_IMETHODIMP 
     150               0 : nsScrollbarFrame::HandleDrag(nsPresContext* aPresContext, 
     151                 :                               nsGUIEvent*     aEvent,
     152                 :                               nsEventStatus*  aEventStatus)
     153                 : {
     154               0 :   return NS_OK;
     155                 : }
     156                 : 
     157                 : NS_IMETHODIMP 
     158               0 : nsScrollbarFrame::HandleRelease(nsPresContext* aPresContext, 
     159                 :                                  nsGUIEvent*     aEvent,
     160                 :                                  nsEventStatus*  aEventStatus)
     161                 : {
     162               0 :   return NS_OK;
     163                 : }
     164                 : 
     165                 : void
     166               0 : nsScrollbarFrame::SetScrollbarMediatorContent(nsIContent* aMediator)
     167                 : {
     168               0 :   mScrollbarMediator = aMediator;
     169               0 : }
     170                 : 
     171                 : nsIScrollbarMediator*
     172               0 : nsScrollbarFrame::GetScrollbarMediator()
     173                 : {
     174               0 :   if (!mScrollbarMediator)
     175               0 :     return nsnull;
     176               0 :   nsIFrame* f = mScrollbarMediator->GetPrimaryFrame();
     177                 : 
     178                 :   // check if the frame is a scroll frame. If so, get the scrollable frame
     179                 :   // inside it.
     180               0 :   nsIScrollableFrame* scrollFrame = do_QueryFrame(f);
     181               0 :   if (scrollFrame) {
     182               0 :     f = scrollFrame->GetScrolledFrame();
     183                 :   }
     184                 : 
     185               0 :   nsIScrollbarMediator* sbm = do_QueryFrame(f);
     186               0 :   return sbm;
     187                 : }

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