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1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
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2 /* This Source Code Form is subject to the terms of the Mozilla Public |
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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5 |
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6 #include "nsListItemFrame.h" |
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7 |
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8 #include "nsCOMPtr.h" |
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9 #include "nsNameSpaceManager.h" |
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10 #include "nsGkAtoms.h" |
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11 #include "nsDisplayList.h" |
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12 #include "nsBoxLayout.h" |
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13 #include <algorithm> |
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14 |
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15 nsListItemFrame::nsListItemFrame(nsIPresShell* aPresShell, |
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16 nsStyleContext* aContext, |
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17 bool aIsRoot, |
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18 nsBoxLayout* aLayoutManager) |
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19 : nsGridRowLeafFrame(aPresShell, aContext, aIsRoot, aLayoutManager) |
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20 { |
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21 } |
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22 |
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23 nsListItemFrame::~nsListItemFrame() |
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24 { |
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25 } |
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26 |
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27 nsSize |
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28 nsListItemFrame::GetPrefSize(nsBoxLayoutState& aState) |
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29 { |
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30 nsSize size = nsBoxFrame::GetPrefSize(aState); |
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31 DISPLAY_PREF_SIZE(this, size); |
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32 |
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33 // guarantee that our preferred height doesn't exceed the standard |
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34 // listbox row height |
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35 size.height = std::max(mRect.height, size.height); |
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36 return size; |
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37 } |
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38 |
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39 void |
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40 nsListItemFrame::BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder, |
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41 const nsRect& aDirtyRect, |
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42 const nsDisplayListSet& aLists) |
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43 { |
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44 if (aBuilder->IsForEventDelivery()) { |
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45 if (!mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::allowevents, |
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46 nsGkAtoms::_true, eCaseMatters)) |
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47 return; |
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48 } |
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49 |
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50 nsGridRowLeafFrame::BuildDisplayListForChildren(aBuilder, aDirtyRect, aLists); |
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51 } |
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52 |
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53 // Creation Routine /////////////////////////////////////////////////////////////////////// |
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54 |
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55 already_AddRefed<nsBoxLayout> NS_NewGridRowLeafLayout(); |
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56 |
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57 nsIFrame* |
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58 NS_NewListItemFrame(nsIPresShell* aPresShell, nsStyleContext* aContext) |
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59 { |
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60 nsCOMPtr<nsBoxLayout> layout = NS_NewGridRowLeafLayout(); |
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61 if (!layout) { |
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62 return nullptr; |
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63 } |
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64 |
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65 return new (aPresShell) nsListItemFrame(aPresShell, aContext, false, layout); |
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66 } |
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67 |
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68 NS_IMPL_FRAMEARENA_HELPERS(nsListItemFrame) |