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
wasChangedSinceLastChangeEvent()37 bool wasChangedSinceLastChangeEvent() const { return m_wasChangedSinceLastChangeEvent; }
setChangedSinceLastChangeEvent(bool wasChangedSinceLastChangeEvent)38 void setChangedSinceLastChangeEvent(bool wasChangedSinceLastChangeEvent) { m_wasChangedSinceLastChangeEvent = wasChangedSinceLastChangeEvent; }
39
lastChangeWasUserEdit()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:
renderName()92 virtual const char* renderName() const { return "RenderTextControl"; }
isTextControl()93 virtual bool isTextControl() const { return true; }
hasControlClip()94 virtual bool hasControlClip() const { return false; }
95 virtual IntRect controlClipRect(int tx, int ty) const;
96 virtual void calcPrefWidths();
removeLeftoverAnonymousBlock(RenderBlock *)97 virtual void removeLeftoverAnonymousBlock(RenderBlock*) { }
canHaveChildren()98 virtual bool canHaveChildren() const { return false; }
avoidsFloats()99 virtual bool avoidsFloats() const { return true; }
100 void setInnerTextStyle(PassRefPtr<RenderStyle>);
101
102 virtual void addFocusRingRects(Vector<IntRect>&, int tx, int ty);
103
canBeProgramaticallyScrolled(bool)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
toRenderTextControl(RenderObject * object)113 inline RenderTextControl* toRenderTextControl(RenderObject* object)
114 {
115 ASSERT(!object || object->isTextControl());
116 return static_cast<RenderTextControl*>(object);
117 }
118
toRenderTextControl(const RenderObject * object)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