1 /* 2 * Copyright (C) 2006, 2007 Apple Inc. All rights reserved. 3 * (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 * 20 */ 21 22 #ifndef RenderTextControl_h 23 #define RenderTextControl_h 24 25 #include "RenderBlock.h" 26 27 namespace WebCore { 28 29 class VisibleSelection; 30 class TextControlInnerElement; 31 class TextControlInnerTextElement; 32 33 class RenderTextControl : public RenderBlock { 34 public: 35 virtual ~RenderTextControl(); 36 37 bool wasChangedSinceLastChangeEvent() const { return m_wasChangedSinceLastChangeEvent; } 38 void setChangedSinceLastChangeEvent(bool wasChangedSinceLastChangeEvent) { m_wasChangedSinceLastChangeEvent = wasChangedSinceLastChangeEvent; } 39 40 bool lastChangeWasUserEdit() const { return m_lastChangeWasUserEdit; } 41 void setLastChangeWasUserEdit(bool lastChangeWasUserEdit); 42 43 int selectionStart(); 44 int selectionEnd(); 45 void setSelectionStart(int); 46 void setSelectionEnd(int); 47 void select(); 48 void setSelectionRange(int start, int end); 49 VisibleSelection selection(int start, int end) const; 50 51 virtual void subtreeHasChanged(); 52 String text(); 53 String textWithHardLineBreaks(); 54 void selectionChanged(bool userTriggered); 55 56 VisiblePosition visiblePositionForIndex(int index); 57 int indexForVisiblePosition(const VisiblePosition&); 58 59 void updatePlaceholderVisibility(bool, bool); 60 61 protected: 62 RenderTextControl(Node*, bool); 63 64 int scrollbarThickness() const; 65 void adjustInnerTextStyle(const RenderStyle* startStyle, RenderStyle* textBlockStyle) const; 66 void setInnerTextValue(const String&); 67 68 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle); 69 70 void createSubtreeIfNeeded(TextControlInnerElement* innerBlock); 71 void hitInnerTextElement(HitTestResult&, int x, int y, int tx, int ty); 72 void forwardEvent(Event*); 73 74 int textBlockWidth() const; 75 int textBlockHeight() const; 76 77 virtual int preferredContentWidth(float charWidth) const = 0; 78 virtual void adjustControlHeightBasedOnLineHeight(int lineHeight) = 0; 79 virtual void cacheSelection(int start, int end) = 0; 80 virtual PassRefPtr<RenderStyle> createInnerTextStyle(const RenderStyle* startStyle) const = 0; 81 virtual RenderStyle* textBaseStyle() const = 0; 82 83 virtual void updateFromElement(); 84 virtual void calcHeight(); 85 86 friend class TextIterator; 87 HTMLElement* innerTextElement() const; 88 89 bool m_placeholderVisible; 90 91 private: 92 virtual const char* renderName() const { return "RenderTextControl"; } 93 virtual bool isTextControl() const { return true; } 94 virtual bool hasControlClip() const { return false; } 95 virtual IntRect controlClipRect(int tx, int ty) const; 96 virtual void calcPrefWidths(); 97 virtual void removeLeftoverAnonymousBlock(RenderBlock*) { } 98 virtual bool canHaveChildren() const { return false; } 99 virtual bool avoidsFloats() const { return true; } 100 void setInnerTextStyle(PassRefPtr<RenderStyle>); 101 102 virtual void addFocusRingRects(Vector<IntRect>&, int tx, int ty); 103 104 virtual bool canBeProgramaticallyScrolled(bool) const { return true; } 105 106 String finishText(Vector<UChar>&) const; 107 108 bool m_wasChangedSinceLastChangeEvent; 109 bool m_lastChangeWasUserEdit; 110 RefPtr<TextControlInnerTextElement> m_innerText; 111 }; 112 113 inline RenderTextControl* toRenderTextControl(RenderObject* object) 114 { 115 ASSERT(!object || object->isTextControl()); 116 return static_cast<RenderTextControl*>(object); 117 } 118 119 inline const RenderTextControl* toRenderTextControl(const RenderObject* object) 120 { 121 ASSERT(!object || object->isTextControl()); 122 return static_cast<const RenderTextControl*>(object); 123 } 124 125 // This will catch anyone doing an unnecessary cast. 126 void toRenderTextControl(const RenderTextControl*); 127 128 } // namespace WebCore 129 130 #endif // RenderTextControl_h 131