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       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             : #ifndef nsSelectsAreaFrame_h___
       6             : #define nsSelectsAreaFrame_h___
       7             : 
       8             : #include "mozilla/Attributes.h"
       9             : #include "nsBlockFrame.h"
      10             : 
      11           0 : class nsSelectsAreaFrame : public nsBlockFrame
      12             : {
      13             : public:
      14           0 :   NS_DECL_FRAMEARENA_HELPERS(nsSelectsAreaFrame)
      15             : 
      16             :   friend nsContainerFrame* NS_NewSelectsAreaFrame(nsIPresShell* aShell,
      17             :                                                   nsStyleContext* aContext,
      18             :                                                   nsFrameState aFlags);
      19             : 
      20             :   virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
      21             :                                 const nsRect&           aDirtyRect,
      22             :                                 const nsDisplayListSet& aLists) override;
      23             : 
      24             :   void BuildDisplayListInternal(nsDisplayListBuilder*   aBuilder,
      25             :                                 const nsRect&           aDirtyRect,
      26             :                                 const nsDisplayListSet& aLists);
      27             : 
      28             :   virtual void Reflow(nsPresContext*           aCX,
      29             :                       ReflowOutput&     aDesiredSize,
      30             :                       const ReflowInput& aReflowInput,
      31             :                       nsReflowStatus&          aStatus) override;
      32             : 
      33           0 :   nscoord BSizeOfARow() const { return mBSizeOfARow; }
      34             : 
      35             : protected:
      36           0 :   explicit nsSelectsAreaFrame(nsStyleContext* aContext) :
      37             :     nsBlockFrame(aContext, kClassID),
      38             :     // initialize to wacky value so first call of
      39             :     // nsSelectsAreaFrame::Reflow will always invalidate
      40           0 :     mBSizeOfARow(nscoord_MIN)
      41           0 :   {}
      42             : 
      43             :   // We cache the block size of a single row so that changes to the
      44             :   // "size" attribute, padding, etc. can all be handled with only one
      45             :   // reflow.  We'll have to reflow twice if someone changes our font
      46             :   // size or something like that, so that the block size of our options
      47             :   // will change.
      48             :   nscoord mBSizeOfARow;
      49             : };
      50             : 
      51             : #endif /* nsSelectsAreaFrame_h___ */