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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 "wtf/Noncopyable.h"
43 class GraphicsContext;
44 class HTMLFormElement;
45 class MutableStylePropertySet;
50 class VisiblePosition;
52 enum EUserTriggered { NotUserTriggered = 0, UserTriggered = 1 };
54 enum RevealExtentOption {
59 class FrameSelection FINAL : public VisibleSelection::ChangeObserver, private CaretBase {
60 WTF_MAKE_NONCOPYABLE(FrameSelection);
61 WTF_MAKE_FAST_ALLOCATED;
63 enum EAlteration { AlterationMove, AlterationExtend };
64 enum CursorAlignOnScroll { AlignCursorOnScrollIfNeeded,
65 AlignCursorOnScrollAlways };
66 enum SetSelectionOption {
67 // 1 << 0 is reserved for EUserTriggered
69 ClearTypingStyle = 1 << 2,
70 SpellCorrectionTriggered = 1 << 3,
71 DoNotSetFocus = 1 << 4,
72 DoNotUpdateAppearance = 1 << 5,
74 typedef unsigned SetSelectionOptions; // Union of values in SetSelectionOption and EUserTriggered
75 static inline EUserTriggered selectionOptionsToUserTriggered(SetSelectionOptions options)
77 return static_cast<EUserTriggered>(options & UserTriggered);
80 explicit FrameSelection(LocalFrame* = 0);
81 virtual ~FrameSelection();
83 Element* rootEditableElement() const { return m_selection.rootEditableElement(); }
84 Element* rootEditableElementOrDocumentElement() const;
85 Node* rootEditableElementOrTreeScopeRootNode() const;
87 bool rendererIsEditable() const { return m_selection.rendererIsEditable(); }
88 bool isContentEditable() const { return m_selection.isContentEditable(); }
89 bool isContentRichlyEditable() const { return m_selection.isContentRichlyEditable(); }
91 void moveTo(const VisiblePosition&, EUserTriggered = NotUserTriggered, CursorAlignOnScroll = AlignCursorOnScrollIfNeeded);
92 void moveTo(const VisiblePosition&, const VisiblePosition&, EUserTriggered = NotUserTriggered);
93 void moveTo(const Position&, EAffinity, EUserTriggered = NotUserTriggered);
95 const VisibleSelection& selection() const { return m_selection; }
96 void setSelection(const VisibleSelection&, SetSelectionOptions = CloseTyping | ClearTypingStyle, CursorAlignOnScroll = AlignCursorOnScrollIfNeeded, TextGranularity = CharacterGranularity);
97 void setSelection(const VisibleSelection& selection, TextGranularity granularity) { setSelection(selection, CloseTyping | ClearTypingStyle, AlignCursorOnScrollIfNeeded, granularity); }
98 bool setSelectedRange(Range*, EAffinity, SetSelectionOptions = CloseTyping | ClearTypingStyle);
101 void prepareForDestruction();
103 // Call this after doing user-triggered selections to make it easy to delete the frame you entirely selected.
104 void selectFrameElementInParentIfFullySelected();
106 bool contains(const LayoutPoint&);
108 SelectionType selectionType() const { return m_selection.selectionType(); }
110 EAffinity affinity() const { return m_selection.affinity(); }
112 bool modify(EAlteration, SelectionDirection, TextGranularity, EUserTriggered = NotUserTriggered);
113 enum VerticalDirection { DirectionUp, DirectionDown };
114 bool modify(EAlteration, unsigned verticalDistance, VerticalDirection, EUserTriggered = NotUserTriggered, CursorAlignOnScroll = AlignCursorOnScrollIfNeeded);
116 TextGranularity granularity() const { return m_granularity; }
118 void setStart(const VisiblePosition &, EUserTriggered = NotUserTriggered);
119 void setEnd(const VisiblePosition &, EUserTriggered = NotUserTriggered);
121 void setBase(const VisiblePosition&, EUserTriggered = NotUserTriggered);
122 void setExtent(const VisiblePosition&, EUserTriggered = NotUserTriggered);
124 Position base() const { return m_selection.base(); }
125 Position extent() const { return m_selection.extent(); }
126 Position start() const { return m_selection.start(); }
127 Position end() const { return m_selection.end(); }
129 // Return the renderer that is responsible for painting the caret (in the selection start node)
130 RenderObject* caretRenderer() const;
132 // Caret rect local to the caret's renderer
133 LayoutRect localCaretRect();
135 // Bounds of (possibly transformed) caret in absolute coords
136 IntRect absoluteCaretBounds();
137 void setCaretRectNeedsUpdate() { CaretBase::setCaretRectNeedsUpdate(); }
139 void didChangeFocus();
140 void willBeModified(EAlteration, SelectionDirection);
142 bool isNone() const { return m_selection.isNone(); }
143 bool isCaret() const { return m_selection.isCaret(); }
144 bool isRange() const { return m_selection.isRange(); }
145 bool isCaretOrRange() const { return m_selection.isCaretOrRange(); }
146 bool isInPasswordField() const;
148 // If this FrameSelection has a logical range which is still valid, this function return its clone. Otherwise,
149 // the return value from underlying VisibleSelection's firstRange() is returned.
150 PassRefPtrWillBeRawPtr<Range> firstRange() const;
152 PassRefPtrWillBeRawPtr<Range> toNormalizedRange() const { return m_selection.toNormalizedRange(); }
154 void nodeWillBeRemoved(Node&);
155 void didUpdateCharacterData(CharacterData*, unsigned offset, unsigned oldLength, unsigned newLength);
156 void didMergeTextNodes(const Text& oldNode, unsigned offset);
157 void didSplitTextNode(const Text& oldNode);
159 void setCaretVisible(bool caretIsVisible) { setCaretVisibility(caretIsVisible ? Visible : Hidden); }
160 bool recomputeCaretRect();
161 void invalidateCaretRect();
162 void paintCaret(GraphicsContext*, const LayoutPoint&, const LayoutRect& clipRect);
164 // Used to suspend caret blinking while the mouse is down.
165 void setCaretBlinkingSuspended(bool suspended) { m_isCaretBlinkingSuspended = suspended; }
166 bool isCaretBlinkingSuspended() const { return m_isCaretBlinkingSuspended; }
169 void setFocused(bool);
170 bool isFocused() const { return m_focused; }
171 bool isFocusedAndActive() const;
172 void pageActivationChanged();
175 void updateAppearance();
177 void updateSecureKeyboardEntryIfActive();
180 void formatForDebugger(char* buffer, unsigned length) const;
181 void showTreeForThis() const;
184 enum EndPointsAdjustmentMode { AdjustEndpointsAtBidiBoundary, DoNotAdjsutEndpoints };
185 void setNonDirectionalSelectionIfNeeded(const VisibleSelection&, TextGranularity, EndPointsAdjustmentMode = DoNotAdjsutEndpoints);
186 void setFocusedNodeIfNeeded();
187 void notifyRendererOfSelectionChange(EUserTriggered);
189 EditingStyle* typingStyle() const;
190 void setTypingStyle(PassRefPtr<EditingStyle>);
191 void clearTypingStyle();
193 String selectedText() const;
194 String selectedTextForClipboard() const;
196 FloatRect bounds(bool clipToVisibleContent = true) const;
198 HTMLFormElement* currentForm() const;
200 void revealSelection(const ScrollAlignment& = ScrollAlignment::alignCenterIfNeeded, RevealExtentOption = DoNotRevealExtent);
201 void setSelectionFromNone();
203 void setShouldShowBlockCursor(bool);
205 // VisibleSelection::ChangeObserver interface.
206 virtual void didChangeVisibleSelection() OVERRIDE;
209 enum EPositionType { START, END, BASE, EXTENT };
211 void respondToNodeModification(Node&, bool baseRemoved, bool extentRemoved, bool startRemoved, bool endRemoved);
212 TextDirection directionOfEnclosingBlock();
213 TextDirection directionOfSelection();
215 VisiblePosition positionForPlatform(bool isGetStart) const;
216 VisiblePosition startForPlatform() const;
217 VisiblePosition endForPlatform() const;
218 VisiblePosition nextWordPositionForPlatform(const VisiblePosition&);
220 VisiblePosition modifyExtendingRight(TextGranularity);
221 VisiblePosition modifyExtendingForward(TextGranularity);
222 VisiblePosition modifyMovingRight(TextGranularity);
223 VisiblePosition modifyMovingForward(TextGranularity);
224 VisiblePosition modifyExtendingLeft(TextGranularity);
225 VisiblePosition modifyExtendingBackward(TextGranularity);
226 VisiblePosition modifyMovingLeft(TextGranularity);
227 VisiblePosition modifyMovingBackward(TextGranularity);
229 LayoutUnit lineDirectionPointForBlockDirectionNavigation(EPositionType);
231 void notifyAccessibilityForSelectionChange();
233 void focusedOrActiveStateChanged();
235 void caretBlinkTimerFired(Timer<FrameSelection>*);
237 void setUseSecureKeyboardEntry(bool);
239 void setCaretVisibility(CaretVisibility);
240 bool shouldBlinkCaret() const;
242 bool dispatchSelectStart();
244 void updateSelectionIfNeeded(const Position& base, const Position& extent, const Position& start, const Position& end);
246 void startObservingVisibleSelectionChange();
247 void stopObservingVisibleSelectionChangeIfNecessary();
251 LayoutUnit m_xPosForVerticalArrowNavigation;
253 VisibleSelection m_selection;
254 bool m_observingVisibleSelection;
255 VisiblePosition m_originalBase; // Used to store base before the adjustment at bidi boundary
256 TextGranularity m_granularity;
258 // The range specified by the user, which may not be visually canonicalized (hence "logical").
259 // This will be invalidated if the underlying VisibleSelection changes. If that happens, this variable will
260 // become null, in which case logical positions == visible positions.
261 RefPtrWillBePersistent<Range> m_logicalRange;
263 RefPtr<Node> m_previousCaretNode; // The last node which painted the caret. Retained for clearing the old caret when it moves.
265 RefPtr<EditingStyle> m_typingStyle;
267 Timer<FrameSelection> m_caretBlinkTimer;
268 // The painted bounds of the caret in absolute coordinates
269 IntRect m_absCaretBounds;
270 bool m_absCaretBoundsDirty : 1;
271 bool m_caretPaint : 1;
272 bool m_isCaretBlinkingSuspended : 1;
274 bool m_shouldShowBlockCursor : 1;
277 inline EditingStyle* FrameSelection::typingStyle() const
279 return m_typingStyle.get();
282 inline void FrameSelection::clearTypingStyle()
284 m_typingStyle.clear();
287 inline void FrameSelection::setTypingStyle(PassRefPtr<EditingStyle> style)
289 m_typingStyle = style;
291 } // namespace WebCore
294 // Outside the WebCore namespace for ease of invocation from gdb.
295 void showTree(const WebCore::FrameSelection&);
296 void showTree(const WebCore::FrameSelection*);
299 #endif // FrameSelection_h