| /* |
| * Copyright (C) 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved. |
| * Copyright (C) 2015 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef SelectionController_h |
| #define SelectionController_h |
| |
| #include "base/macros.h" |
| #include "core/CoreExport.h" |
| #include "core/dom/DocumentShutdownObserver.h" |
| #include "core/editing/FrameSelection.h" |
| #include "core/editing/PositionWithAffinity.h" |
| #include "core/editing/TextGranularity.h" |
| #include "core/page/EventWithHitTestResults.h" |
| #include "platform/heap/Handle.h" |
| |
| namespace blink { |
| |
| class HitTestResult; |
| class LocalFrame; |
| |
| class CORE_EXPORT SelectionController final |
| : public GarbageCollectedFinalized<SelectionController>, |
| public DocumentShutdownObserver { |
| USING_GARBAGE_COLLECTED_MIXIN(SelectionController); |
| |
| public: |
| static SelectionController* Create(LocalFrame&); |
| virtual ~SelectionController(); |
| void Trace(blink::Visitor*); |
| |
| bool HandleMousePressEvent(const MouseEventWithHitTestResults&); |
| void HandleMouseDraggedEvent(const MouseEventWithHitTestResults&, |
| const IntPoint&, |
| const LayoutPoint&, |
| const IntPoint&); |
| bool HandleMouseReleaseEvent(const MouseEventWithHitTestResults&, |
| const LayoutPoint&); |
| bool HandlePasteGlobalSelection(const WebMouseEvent&); |
| bool HandleGestureLongPress(const HitTestResult&); |
| void HandleGestureTwoFingerTap(const GestureEventWithHitTestResults&); |
| void HandleGestureLongTap(const GestureEventWithHitTestResults&); |
| |
| void UpdateSelectionForMouseDrag(const LayoutPoint&, const IntPoint&); |
| void UpdateSelectionForMouseDrag(const HitTestResult&, |
| const LayoutPoint&, |
| const IntPoint&); |
| void SendContextMenuEvent(const MouseEventWithHitTestResults&, |
| const LayoutPoint&); |
| void PassMousePressEventToSubframe(const MouseEventWithHitTestResults&); |
| |
| void InitializeSelectionState(); |
| void SetMouseDownMayStartSelect(bool); |
| bool MouseDownMayStartSelect() const; |
| bool MouseDownWasSingleClickInSelection() const; |
| void NotifySelectionChanged(); |
| bool HasExtendedSelection() const { |
| return selection_state_ == SelectionState::kExtendedSelection; |
| } |
| |
| private: |
| friend class SelectionControllerTest; |
| |
| explicit SelectionController(LocalFrame&); |
| |
| enum class AppendTrailingWhitespace { kShouldAppend, kDontAppend }; |
| enum class SelectInputEventType { kTouch, kMouse }; |
| enum EndPointsAdjustmentMode { |
| kAdjustEndpointsAtBidiBoundary, |
| kDoNotAdjustEndpoints |
| }; |
| |
| Document& GetDocument() const; |
| |
| // Returns |true| if a word was selected. |
| bool SelectClosestWordFromHitTestResult(const HitTestResult&, |
| AppendTrailingWhitespace, |
| SelectInputEventType); |
| void SelectClosestMisspellingFromHitTestResult(const HitTestResult&, |
| AppendTrailingWhitespace); |
| // Returns |true| if a word was selected. |
| bool SelectClosestWordFromMouseEvent(const MouseEventWithHitTestResults&); |
| void SelectClosestMisspellingFromMouseEvent( |
| const MouseEventWithHitTestResults&); |
| void SelectClosestWordOrLinkFromMouseEvent( |
| const MouseEventWithHitTestResults&); |
| void SetNonDirectionalSelectionIfNeeded(const SelectionInFlatTree&, |
| const SetSelectionOptions&, |
| EndPointsAdjustmentMode); |
| void SetCaretAtHitTestResult(const HitTestResult&); |
| bool UpdateSelectionForMouseDownDispatchingSelectStart( |
| Node*, |
| const SelectionInFlatTree&, |
| const SetSelectionOptions&); |
| |
| FrameSelection& Selection() const; |
| |
| // Implements |DocumentShutdownObserver|. |
| // TODO(yosin): We should relocate |m_originalBaseInFlatTree| when DOM tree |
| // changed. |
| void ContextDestroyed(Document*) final; |
| |
| bool HandleSingleClick(const MouseEventWithHitTestResults&); |
| bool HandleDoubleClick(const MouseEventWithHitTestResults&); |
| bool HandleTripleClick(const MouseEventWithHitTestResults&); |
| |
| bool HandleTapInsideSelection(const MouseEventWithHitTestResults&, |
| const SelectionInFlatTree&); |
| |
| Member<LocalFrame> const frame_; |
| // Used to store base before the adjustment at bidi boundary |
| PositionInFlatTreeWithAffinity original_base_in_flat_tree_; |
| bool mouse_down_may_start_select_; |
| bool mouse_down_was_single_click_in_selection_; |
| bool mouse_down_allows_multi_click_; |
| enum class SelectionState { |
| kHaveNotStartedSelection, |
| kPlacedCaret, |
| kExtendedSelection |
| }; |
| SelectionState selection_state_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SelectionController); |
| }; |
| |
| bool IsLinkSelection(const MouseEventWithHitTestResults&); |
| bool IsExtendingSelection(const MouseEventWithHitTestResults&); |
| CORE_EXPORT SelectionInFlatTree |
| AdjustSelectionWithTrailingWhitespace(const SelectionInFlatTree&); |
| } // namespace blink |
| |
| #endif // SelectionController_h |