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26 #ifndef FrameSelection_h
27 #define FrameSelection_h
29 #include "core/dom/Range.h"
30 #include "core/editing/Caret.h"
31 #include "core/editing/EditingStyle.h"
32 #include "core/editing/VisibleSelection.h"
33 #include "core/rendering/ScrollAlignment.h"
34 #include "platform/Timer.h"
35 #include "platform/geometry/IntRect.h"
36 #include "platform/geometry/LayoutRect.h"
37 #include "platform/heap/Handle.h"
38 #include "wtf/Noncopyable.h"
44 class GraphicsContext;
45 class HTMLFormElement;
46 class MutableStylePropertySet;
51 class VisiblePosition;
53 enum EUserTriggered { NotUserTriggered = 0, UserTriggered = 1 };
55 enum RevealExtentOption {
60 class FrameSelection FINAL : public NoBaseWillBeGarbageCollectedFinalized<FrameSelection>, public VisibleSelection::ChangeObserver, private CaretBase {
61 WTF_MAKE_NONCOPYABLE(FrameSelection);
62 WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
63 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(FrameSelection);
65 static PassOwnPtrWillBeRawPtr<FrameSelection> create(LocalFrame* frame = 0)
67 return adoptPtrWillBeNoop(new FrameSelection(frame));
69 virtual ~FrameSelection();
71 enum EAlteration { AlterationMove, AlterationExtend };
72 enum CursorAlignOnScroll { AlignCursorOnScrollIfNeeded,
73 AlignCursorOnScrollAlways };
74 enum SetSelectionOption {
75 // 1 << 0 is reserved for EUserTriggered
77 ClearTypingStyle = 1 << 2,
78 SpellCorrectionTriggered = 1 << 3,
79 DoNotSetFocus = 1 << 4,
80 DoNotUpdateAppearance = 1 << 5,
82 typedef unsigned SetSelectionOptions; // Union of values in SetSelectionOption and EUserTriggered
83 static inline EUserTriggered selectionOptionsToUserTriggered(SetSelectionOptions options)
85 return static_cast<EUserTriggered>(options & UserTriggered);
88 enum DirectoinalOption {
92 enum ResetCaretBlinkOption {
97 Element* rootEditableElement() const { return m_selection.rootEditableElement(); }
98 Element* rootEditableElementOrDocumentElement() const;
99 ContainerNode* rootEditableElementOrTreeScopeRootNode() const;
101 bool hasEditableStyle() const { return m_selection.hasEditableStyle(); }
102 bool isContentEditable() const { return m_selection.isContentEditable(); }
103 bool isContentRichlyEditable() const { return m_selection.isContentRichlyEditable(); }
105 void moveTo(const VisiblePosition&, EUserTriggered = NotUserTriggered, CursorAlignOnScroll = AlignCursorOnScrollIfNeeded);
106 void moveTo(const VisiblePosition&, const VisiblePosition&, EUserTriggered = NotUserTriggered);
107 void moveTo(const Position&, EAffinity, EUserTriggered = NotUserTriggered);
109 const VisibleSelection& selection() const { return m_selection; }
110 void setSelection(const VisibleSelection&, SetSelectionOptions = CloseTyping | ClearTypingStyle, CursorAlignOnScroll = AlignCursorOnScrollIfNeeded, TextGranularity = CharacterGranularity);
111 void setSelection(const VisibleSelection& selection, TextGranularity granularity) { setSelection(selection, CloseTyping | ClearTypingStyle, AlignCursorOnScrollIfNeeded, granularity); }
112 bool setSelectedRange(Range*, EAffinity, DirectoinalOption directional = NonDirectional, SetSelectionOptions = CloseTyping | ClearTypingStyle);
115 void prepareForDestruction();
117 // Call this after doing user-triggered selections to make it easy to delete the frame you entirely selected.
118 void selectFrameElementInParentIfFullySelected();
120 bool contains(const LayoutPoint&);
122 SelectionType selectionType() const { return m_selection.selectionType(); }
124 EAffinity affinity() const { return m_selection.affinity(); }
126 bool modify(EAlteration, SelectionDirection, TextGranularity, EUserTriggered = NotUserTriggered);
127 enum VerticalDirection { DirectionUp, DirectionDown };
128 bool modify(EAlteration, unsigned verticalDistance, VerticalDirection, EUserTriggered = NotUserTriggered, CursorAlignOnScroll = AlignCursorOnScrollIfNeeded);
130 TextGranularity granularity() const { return m_granularity; }
132 void setStart(const VisiblePosition &, EUserTriggered = NotUserTriggered);
133 void setEnd(const VisiblePosition &, EUserTriggered = NotUserTriggered);
135 void setBase(const VisiblePosition&, EUserTriggered = NotUserTriggered);
136 void setExtent(const VisiblePosition&, EUserTriggered = NotUserTriggered);
138 Position base() const { return m_selection.base(); }
139 Position extent() const { return m_selection.extent(); }
140 Position start() const { return m_selection.start(); }
141 Position end() const { return m_selection.end(); }
143 // Return the renderer that is responsible for painting the caret (in the selection start node)
144 RenderBlock* caretRenderer() const;
146 // Bounds of (possibly transformed) caret in absolute coords
147 IntRect absoluteCaretBounds();
149 void didChangeFocus();
150 void willBeModified(EAlteration, SelectionDirection);
152 bool isNone() const { return m_selection.isNone(); }
153 bool isCaret() const { return m_selection.isCaret(); }
154 bool isRange() const { return m_selection.isRange(); }
155 bool isCaretOrRange() const { return m_selection.isCaretOrRange(); }
156 bool isInPasswordField() const;
157 bool isDirectional() const { return m_selection.isDirectional(); }
159 // If this FrameSelection has a logical range which is still valid, this function return its clone. Otherwise,
160 // the return value from underlying VisibleSelection's firstRange() is returned.
161 PassRefPtrWillBeRawPtr<Range> firstRange() const;
163 PassRefPtrWillBeRawPtr<Range> toNormalizedRange() const { return m_selection.toNormalizedRange(); }
165 void nodeWillBeRemoved(Node&);
166 void didUpdateCharacterData(CharacterData*, unsigned offset, unsigned oldLength, unsigned newLength);
167 void didMergeTextNodes(const Text& oldNode, unsigned offset);
168 void didSplitTextNode(const Text& oldNode);
170 void updateAppearance(ResetCaretBlinkOption = None);
171 void setCaretVisible(bool caretIsVisible) { setCaretVisibility(caretIsVisible ? Visible : Hidden); }
172 bool isCaretBoundsDirty() const { return m_caretRectDirty; }
173 void setCaretRectNeedsUpdate();
174 void scheduleVisualUpdate() const;
175 void invalidateCaretRect();
176 void paintCaret(GraphicsContext*, const LayoutPoint&, const LayoutRect& clipRect);
178 // Used to suspend caret blinking while the mouse is down.
179 void setCaretBlinkingSuspended(bool suspended) { m_isCaretBlinkingSuspended = suspended; }
180 bool isCaretBlinkingSuspended() const { return m_isCaretBlinkingSuspended; }
183 void setFocused(bool);
184 bool isFocused() const { return m_focused; }
185 bool isFocusedAndActive() const;
186 void pageActivationChanged();
188 void updateSecureKeyboardEntryIfActive();
191 void formatForDebugger(char* buffer, unsigned length) const;
192 void showTreeForThis() const;
195 enum EndPointsAdjustmentMode { AdjustEndpointsAtBidiBoundary, DoNotAdjsutEndpoints };
196 void setNonDirectionalSelectionIfNeeded(const VisibleSelection&, TextGranularity, EndPointsAdjustmentMode = DoNotAdjsutEndpoints);
197 void setFocusedNodeIfNeeded();
198 void notifyRendererOfSelectionChange(EUserTriggered);
200 EditingStyle* typingStyle() const;
201 void setTypingStyle(PassRefPtrWillBeRawPtr<EditingStyle>);
202 void clearTypingStyle();
204 String selectedText() const;
205 String selectedTextForClipboard() const;
207 FloatRect bounds(bool clipToVisibleContent = true) const;
209 HTMLFormElement* currentForm() const;
211 void revealSelection(const ScrollAlignment& = ScrollAlignment::alignCenterIfNeeded, RevealExtentOption = DoNotRevealExtent);
212 void setSelectionFromNone();
214 void setShouldShowBlockCursor(bool);
216 // VisibleSelection::ChangeObserver interface.
217 virtual void didChangeVisibleSelection() OVERRIDE;
219 virtual void trace(Visitor*) OVERRIDE;
222 explicit FrameSelection(LocalFrame*);
224 enum EPositionType { START, END, BASE, EXTENT };
226 void respondToNodeModification(Node&, bool baseRemoved, bool extentRemoved, bool startRemoved, bool endRemoved);
227 TextDirection directionOfEnclosingBlock();
228 TextDirection directionOfSelection();
230 VisiblePosition positionForPlatform(bool isGetStart) const;
231 VisiblePosition startForPlatform() const;
232 VisiblePosition endForPlatform() const;
233 VisiblePosition nextWordPositionForPlatform(const VisiblePosition&);
235 VisiblePosition modifyExtendingRight(TextGranularity);
236 VisiblePosition modifyExtendingForward(TextGranularity);
237 VisiblePosition modifyMovingRight(TextGranularity);
238 VisiblePosition modifyMovingForward(TextGranularity);
239 VisiblePosition modifyExtendingLeft(TextGranularity);
240 VisiblePosition modifyExtendingBackward(TextGranularity);
241 VisiblePosition modifyMovingLeft(TextGranularity);
242 VisiblePosition modifyMovingBackward(TextGranularity);
244 LayoutUnit lineDirectionPointForBlockDirectionNavigation(EPositionType);
246 void notifyAccessibilityForSelectionChange();
247 void notifyCompositorForSelectionChange();
249 void focusedOrActiveStateChanged();
251 void caretBlinkTimerFired(Timer<FrameSelection>*);
253 void setUseSecureKeyboardEntry(bool);
255 void setCaretVisibility(CaretVisibility);
256 bool shouldBlinkCaret() const;
258 bool dispatchSelectStart();
260 void updateSelectionIfNeeded(const Position& base, const Position& extent, const Position& start, const Position& end);
262 void startObservingVisibleSelectionChange();
263 void stopObservingVisibleSelectionChangeIfNecessary();
265 VisibleSelection validateSelection(const VisibleSelection&);
269 LayoutUnit m_xPosForVerticalArrowNavigation;
271 VisibleSelection m_selection;
272 bool m_observingVisibleSelection;
273 VisiblePosition m_originalBase; // Used to store base before the adjustment at bidi boundary
274 TextGranularity m_granularity;
276 // The range specified by the user, which may not be visually canonicalized (hence "logical").
277 // This will be invalidated if the underlying VisibleSelection changes. If that happens, this variable will
278 // become null, in which case logical positions == visible positions.
279 RefPtrWillBeMember<Range> m_logicalRange;
281 RefPtrWillBeMember<Node> m_previousCaretNode; // The last node which painted the caret. Retained for clearing the old caret when it moves.
282 LayoutRect m_previousCaretRect;
284 RefPtrWillBeMember<EditingStyle> m_typingStyle;
286 Timer<FrameSelection> m_caretBlinkTimer;
288 bool m_caretRectDirty : 1;
289 bool m_caretPaint : 1;
290 bool m_isCaretBlinkingSuspended : 1;
292 bool m_shouldShowBlockCursor : 1;
295 inline EditingStyle* FrameSelection::typingStyle() const
297 return m_typingStyle.get();
300 inline void FrameSelection::clearTypingStyle()
302 m_typingStyle.clear();
305 inline void FrameSelection::setTypingStyle(PassRefPtrWillBeRawPtr<EditingStyle> style)
307 m_typingStyle = style;
312 // Outside the WebCore namespace for ease of invocation from gdb.
313 void showTree(const blink::FrameSelection&);
314 void showTree(const blink::FrameSelection*);
317 #endif // FrameSelection_h