Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : 
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef nsGridLayout2_h___
       8             : #define nsGridLayout2_h___
       9             : 
      10             : #include "mozilla/Attributes.h"
      11             : #include "nsStackLayout.h"
      12             : #include "nsIGridPart.h"
      13             : #include "nsCoord.h"
      14             : #include "nsGrid.h"
      15             : 
      16             : class nsGridRowGroupLayout;
      17             : class nsGridRowLayout;
      18             : class nsGridRow;
      19             : class nsBoxLayoutState;
      20             : 
      21             : /**
      22             :  * The nsBoxLayout implementation for a grid.
      23             :  */
      24             : class nsGridLayout2 final : public nsStackLayout,
      25             :                             public nsIGridPart
      26             : {
      27             : public:
      28             : 
      29             :   friend nsresult NS_NewGridLayout2(nsIPresShell* aPresShell, nsBoxLayout** aNewLayout);
      30             : 
      31             :   NS_DECL_ISUPPORTS_INHERITED
      32             : 
      33             :   NS_IMETHOD XULLayout(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;
      34             :   virtual void IntrinsicISizesDirty(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;
      35             : 
      36           0 :   virtual nsGridRowGroupLayout* CastToRowGroupLayout() override { return nullptr; }
      37           0 :   virtual nsGridLayout2* CastToGridLayout() override { return this; }
      38             :   virtual nsGrid* GetGrid(nsIFrame* aBox, int32_t* aIndex, nsGridRowLayout* aRequestor=nullptr) override;
      39           0 :   virtual nsIGridPart* GetParentGridPart(nsIFrame* aBox, nsIFrame** aParentBox) override {
      40           0 :     NS_NOTREACHED("Should not be called"); return nullptr;
      41             :   }
      42             :   virtual nsSize GetXULMinSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;
      43             :   virtual nsSize GetXULMaxSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;
      44             :   virtual nsSize GetXULPrefSize(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState) override;
      45           0 :   virtual void CountRowsColumns(nsIFrame* aBox, int32_t& aRowCount, int32_t& aComputedColumnCount) override { aRowCount++; }
      46           0 :   virtual void DirtyRows(nsIFrame* aBox, nsBoxLayoutState& aState) override { }
      47             :   virtual int32_t BuildRows(nsIFrame* aBox, nsGridRow* aRows) override;
      48             :   virtual nsMargin GetTotalMargin(nsIFrame* aBox, bool aIsHorizontal) override;
      49           0 :   virtual Type GetType() override { return eGrid; }
      50             :   virtual void ChildrenInserted(nsIFrame* aBox, nsBoxLayoutState& aState,
      51             :                                 nsIFrame* aPrevBox,
      52             :                                 const nsFrameList::Slice& aNewChildren) override;
      53             :   virtual void ChildrenAppended(nsIFrame* aBox, nsBoxLayoutState& aState,
      54             :                                 const nsFrameList::Slice& aNewChildren) override;
      55             :   virtual void ChildrenRemoved(nsIFrame* aBox, nsBoxLayoutState& aState,
      56             :                                nsIFrame* aChildList) override;
      57             :   virtual void ChildrenSet(nsIFrame* aBox, nsBoxLayoutState& aState,
      58             :                            nsIFrame* aChildList) override;
      59             : 
      60           0 :   virtual nsIGridPart* AsGridPart() override { return this; }
      61             : 
      62             :   static void AddOffset(nsIFrame* aChild, nsSize& aSize);
      63             : 
      64             : protected:
      65             : 
      66             :   explicit nsGridLayout2(nsIPresShell* aShell);
      67             :   virtual ~nsGridLayout2();
      68             :   nsGrid mGrid;
      69             : 
      70             : private:
      71             :   void AddWidth(nsSize& aSize, nscoord aSize2, bool aIsHorizontal);
      72             : 
      73             : 
      74             : }; // class nsGridLayout2
      75             : 
      76             : 
      77             : #endif
      78             :