layout/xul/grid/nsIGridPart.h@fc2d59ddac77 (annotated)
layout/xul/grid/nsIGridPart.h
Wed, 31 Dec 2014 07:22:50 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 07:22:50 +0100
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
- permissions
- -rw-r--r--
Correct previous dual key logic pending first delivery installment.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #ifndef nsIGridPart_h___ |
| michael@0 | 7 | #define nsIGridPart_h___ |
| michael@0 | 8 | |
| michael@0 | 9 | #include "nsISupports.h" |
| michael@0 | 10 | |
| michael@0 | 11 | class nsGridRowGroupLayout; |
| michael@0 | 12 | class nsGrid; |
| michael@0 | 13 | class nsGridRowLayout; |
| michael@0 | 14 | class nsGridRow; |
| michael@0 | 15 | class nsGridLayout2; |
| michael@0 | 16 | |
| michael@0 | 17 | // 07373ed7-e947-4a5e-b36c-69f7c195677b |
| michael@0 | 18 | #define NS_IGRIDPART_IID \ |
| michael@0 | 19 | { 0x07373ed7, 0xe947, 0x4a5e, \ |
| michael@0 | 20 | { 0xb3, 0x6c, 0x69, 0xf7, 0xc1, 0x95, 0x67, 0x7b } } |
| michael@0 | 21 | |
| michael@0 | 22 | /** |
| michael@0 | 23 | * An additional interface implemented by nsBoxLayout implementations |
| michael@0 | 24 | * for parts of a grid (excluding cells, which are not special). |
| michael@0 | 25 | */ |
| michael@0 | 26 | class nsIGridPart : public nsISupports { |
| michael@0 | 27 | |
| michael@0 | 28 | public: |
| michael@0 | 29 | |
| michael@0 | 30 | NS_DECLARE_STATIC_IID_ACCESSOR(NS_IGRIDPART_IID) |
| michael@0 | 31 | |
| michael@0 | 32 | virtual nsGridRowGroupLayout* CastToRowGroupLayout()=0; |
| michael@0 | 33 | virtual nsGridLayout2* CastToGridLayout()=0; |
| michael@0 | 34 | |
| michael@0 | 35 | /** |
| michael@0 | 36 | * @param aBox [IN] The other half of the |this| parameter, i.e., the box |
| michael@0 | 37 | * whose layout manager is |this|. |
| michael@0 | 38 | * @param aIndex [INOUT] For callers not setting aRequestor, the value |
| michael@0 | 39 | * pointed to by aIndex is incremented by the index |
| michael@0 | 40 | * of the row (aBox) within its row group; if aBox |
| michael@0 | 41 | * is not a row/column, it is untouched. |
| michael@0 | 42 | * The implementation does this by doing the aIndex |
| michael@0 | 43 | * incrementing in the call to the parent row group |
| michael@0 | 44 | * when aRequestor is non-null. |
| michael@0 | 45 | * @param aRequestor [IN] Non-null if and only if this is a recursive |
| michael@0 | 46 | * call from the GetGrid method on a child grid part, |
| michael@0 | 47 | * in which case it is a pointer to that grid part. |
| michael@0 | 48 | * (This may only be non-null for row groups and |
| michael@0 | 49 | * grids.) |
| michael@0 | 50 | * @return The grid of which aBox (a row, row group, or grid) is a part. |
| michael@0 | 51 | */ |
| michael@0 | 52 | virtual nsGrid* GetGrid(nsIFrame* aBox, int32_t* aIndex, nsGridRowLayout* aRequestor=nullptr)=0; |
| michael@0 | 53 | |
| michael@0 | 54 | /** |
| michael@0 | 55 | * @param aBox [IN] The other half of the |this| parameter, i.e., the box |
| michael@0 | 56 | * whose layout manager is |this|. |
| michael@0 | 57 | * @param aParentBox [OUT] The box representing the next level up in |
| michael@0 | 58 | * the grid (i.e., row group for a row, grid for a |
| michael@0 | 59 | * row group). |
| michael@0 | 60 | * @returns The layout manager for aParentBox. |
| michael@0 | 61 | */ |
| michael@0 | 62 | virtual nsIGridPart* GetParentGridPart(nsIFrame* aBox, nsIFrame** aParentBox) = 0; |
| michael@0 | 63 | |
| michael@0 | 64 | /** |
| michael@0 | 65 | * @param aBox [IN] The other half of the |this| parameter, i.e., the box |
| michael@0 | 66 | * whose layout manager is |this|. |
| michael@0 | 67 | * @param aRowCount [INOUT] Row count |
| michael@0 | 68 | * @param aComputedColumnCount [INOUT] Column count |
| michael@0 | 69 | */ |
| michael@0 | 70 | virtual void CountRowsColumns(nsIFrame* aBox, int32_t& aRowCount, int32_t& aComputedColumnCount)=0; |
| michael@0 | 71 | virtual void DirtyRows(nsIFrame* aBox, nsBoxLayoutState& aState)=0; |
| michael@0 | 72 | virtual int32_t BuildRows(nsIFrame* aBox, nsGridRow* aRows)=0; |
| michael@0 | 73 | virtual nsMargin GetTotalMargin(nsIFrame* aBox, bool aIsHorizontal)=0; |
| michael@0 | 74 | virtual int32_t GetRowCount() { return 1; } |
| michael@0 | 75 | |
| michael@0 | 76 | /** |
| michael@0 | 77 | * Return the level of the grid hierarchy this grid part represents. |
| michael@0 | 78 | */ |
| michael@0 | 79 | enum Type { eGrid, eRowGroup, eRowLeaf }; |
| michael@0 | 80 | virtual Type GetType()=0; |
| michael@0 | 81 | |
| michael@0 | 82 | /** |
| michael@0 | 83 | * Return whether this grid part is an appropriate parent for the argument. |
| michael@0 | 84 | */ |
| michael@0 | 85 | bool CanContain(nsIGridPart* aPossibleChild) { |
| michael@0 | 86 | Type thisType = GetType(), childType = aPossibleChild->GetType(); |
| michael@0 | 87 | return thisType + 1 == childType || (thisType == eRowGroup && childType == eRowGroup); |
| michael@0 | 88 | } |
| michael@0 | 89 | |
| michael@0 | 90 | }; |
| michael@0 | 91 | |
| michael@0 | 92 | NS_DEFINE_STATIC_IID_ACCESSOR(nsIGridPart, NS_IGRIDPART_IID) |
| michael@0 | 93 | |
| michael@0 | 94 | #endif |
| michael@0 | 95 |
