Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : //
       7             : // Eric Vaughan
       8             : // Netscape Communications
       9             : //
      10             : // See documentation in associated header file
      11             : //
      12             : 
      13             : #include "nsGridRowGroupFrame.h"
      14             : #include "nsGridRowLeafLayout.h"
      15             : #include "nsGridRow.h"
      16             : #include "nsBoxLayoutState.h"
      17             : #include "nsGridLayout2.h"
      18             : 
      19             : already_AddRefed<nsBoxLayout> NS_NewGridRowGroupLayout();
      20             : 
      21             : nsIFrame*
      22           0 : NS_NewGridRowGroupFrame(nsIPresShell* aPresShell,
      23             :                         nsStyleContext* aContext)
      24             : {
      25           0 :   nsCOMPtr<nsBoxLayout> layout = NS_NewGridRowGroupLayout();
      26           0 :   return new (aPresShell) nsGridRowGroupFrame(aContext, layout);
      27             : }
      28             : 
      29           0 : NS_IMPL_FRAMEARENA_HELPERS(nsGridRowGroupFrame)
      30             : 
      31             : 
      32             : /**
      33             :  * This is redefined because row groups have a funny property. If they are flexible
      34             :  * then their flex must be equal to the sum of their children's flexes.
      35             :  */
      36             : nscoord
      37           0 : nsGridRowGroupFrame::GetXULFlex()
      38             : {
      39             :   // if we are flexible out flexibility is determined by our columns.
      40             :   // so first get the our flex. If not 0 then our flex is the sum of
      41             :   // our columns flexes.
      42             : 
      43           0 :   if (!DoesNeedRecalc(mFlex))
      44           0 :      return mFlex;
      45             : 
      46           0 :   if (nsBoxFrame::GetXULFlex() == 0)
      47           0 :     return 0;
      48             : 
      49             :   // ok we are flexible add up our children
      50           0 :   nscoord totalFlex = 0;
      51           0 :   nsIFrame* child = nsBox::GetChildXULBox(this);
      52           0 :   while (child)
      53             :   {
      54           0 :     totalFlex += child->GetXULFlex();
      55           0 :     child = GetNextXULBox(child);
      56             :   }
      57             : 
      58           0 :   mFlex = totalFlex;
      59             : 
      60           0 :   return totalFlex;
      61             : }
      62             : 
      63             :