| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * Copyright (C) 2006 Apple Computer, Inc. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_LAYOUT_SELECTION_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_LAYOUT_SELECTION_H_ |
| |
| #include "base/optional.h" |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/core/editing/forward.h" |
| #include "third_party/blink/renderer/platform/heap/handle.h" |
| |
| namespace blink { |
| |
| class InlineTextBox; |
| class IntRect; |
| class LayoutObject; |
| class LayoutText; |
| class NGInlineCursor; |
| class NGInlineCursorPosition; |
| class FrameSelection; |
| struct LayoutSelectionStatus; |
| struct LayoutTextSelectionStatus; |
| class SelectionPaintRange; |
| enum class SelectionState; |
| |
| class LayoutSelection final : public GarbageCollected<LayoutSelection> { |
| public: |
| explicit LayoutSelection(FrameSelection&); |
| |
| void SetHasPendingSelection(); |
| void Commit(); |
| |
| IntRect AbsoluteSelectionBounds(); |
| void InvalidatePaintForSelection(); |
| |
| LayoutTextSelectionStatus ComputeSelectionStatus(const LayoutText&) const; |
| LayoutSelectionStatus ComputeSelectionStatus(const NGInlineCursor&) const; |
| |
| // Compute the layout selection state relative to the current item of the |
| // given NGInlineCursor. E.g. a state of kStart means that the selection |
| // starts within the position (and ends elsewhere), where kStartAndEnd means |
| // the selection both starts and ends within the position. This information is |
| // used at paint time to determine the edges of the layout selection. |
| SelectionState ComputeSelectionStateForCursor( |
| const NGInlineCursorPosition&) const; |
| |
| // Compute the layout selection state relative to the InlineTextBox. |
| // E.g. a state of kStart means that the selection starts within the line |
| // (and ends elsewhere), where kStartAndEnd means the selection both starts |
| // and ends within the line. This information is used at paint time to |
| // determine the edges of the layout selection. |
| SelectionState ComputeSelectionStateForInlineTextBox( |
| const InlineTextBox&) const; |
| |
| static bool IsSelected(const LayoutObject&); |
| |
| void ContextDestroyed(); |
| |
| void Trace(Visitor*) const; |
| |
| private: |
| SelectionState ComputeSelectionStateFromOffsets(SelectionState state, |
| unsigned start_offset, |
| unsigned end_offset) const; |
| |
| void AssertIsValid() const; |
| |
| Member<FrameSelection> frame_selection_; |
| bool has_pending_selection_ : 1; |
| |
| Member<SelectionPaintRange> paint_range_; |
| }; |
| |
| } // namespace blink |
| |
| #endif |