layout/forms/nsSelectsAreaFrame.h

branch
TOR_BUG_9701
changeset 15
b8a032363ba2
equal deleted inserted replaced
-1:000000000000 0:ab1d93ab8523
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 class nsSelectsAreaFrame : public nsBlockFrame
12 {
13 public:
14 NS_DECL_FRAMEARENA_HELPERS
15
16 friend nsIFrame* NS_NewSelectsAreaFrame(nsIPresShell* aShell, nsStyleContext* aContext, nsFrameState aFlags);
17
18 virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
19 const nsRect& aDirtyRect,
20 const nsDisplayListSet& aLists) MOZ_OVERRIDE;
21
22 void BuildDisplayListInternal(nsDisplayListBuilder* aBuilder,
23 const nsRect& aDirtyRect,
24 const nsDisplayListSet& aLists);
25
26 virtual nsresult Reflow(nsPresContext* aCX,
27 nsHTMLReflowMetrics& aDesiredSize,
28 const nsHTMLReflowState& aReflowState,
29 nsReflowStatus& aStatus) MOZ_OVERRIDE;
30
31 nscoord HeightOfARow() const { return mHeightOfARow; }
32
33 protected:
34 nsSelectsAreaFrame(nsStyleContext* aContext) :
35 nsBlockFrame(aContext),
36 mHeightOfARow(0)
37 {}
38
39 // We cache the height of a single row so that changes to the "size"
40 // attribute, padding, etc. can all be handled with only one reflow. We'll
41 // have to reflow twice if someone changes our font size or something like
42 // that, so that the heights of our options will change.
43 nscoord mHeightOfARow;
44 };
45
46 #endif /* nsSelectsAreaFrame_h___ */

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