1 /* 2 * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 * 19 */ 20 21 #ifndef InputElement_h 22 #define InputElement_h 23 24 #include "AtomicString.h" 25 #include "PlatformString.h" 26 27 namespace WebCore { 28 29 class Document; 30 class Element; 31 class Event; 32 class InputElementData; 33 class MappedAttribute; 34 35 class InputElement { 36 public: ~InputElement()37 virtual ~InputElement() { } 38 39 virtual bool isPasswordField() const = 0; 40 virtual bool isSearchField() const = 0; 41 virtual bool isTextField() const = 0; 42 43 virtual bool placeholderShouldBeVisible() const = 0; 44 virtual bool searchEventsShouldBeDispatched() const = 0; 45 46 virtual int size() const = 0; 47 virtual String value() const = 0; 48 virtual void setValue(const String&) = 0; 49 virtual String placeholderValue() const = 0; 50 51 virtual String constrainValue(const String&) const = 0; 52 virtual void setValueFromRenderer(const String&) = 0; 53 54 virtual void cacheSelection(int start, int end) = 0; 55 virtual void select() = 0; 56 57 static const int s_maximumLength; 58 static const int s_defaultSize; 59 60 protected: InputElement()61 InputElement() { } 62 63 static void dispatchFocusEvent(InputElementData&, Document*); 64 static void dispatchBlurEvent(InputElementData&, Document*); 65 static void updatePlaceholderVisibility(InputElementData&, Document*, bool placeholderValueChanged = false); 66 static void updateFocusAppearance(InputElementData&, Document*, bool restorePreviousSelection); 67 static void updateSelectionRange(InputElementData&, int start, int end); 68 static void aboutToUnload(InputElementData&, Document*); 69 static void setValueFromRenderer(InputElementData&, Document*, const String&); 70 static String constrainValue(const InputElementData&, const String& proposedValue, int maxLength); 71 static void handleBeforeTextInsertedEvent(InputElementData&, Document*, Event*); 72 static void parseSizeAttribute(InputElementData&, MappedAttribute*); 73 static void parseMaxLengthAttribute(InputElementData&, MappedAttribute*); 74 static void updateValueIfNeeded(InputElementData&); 75 static void notifyFormStateChanged(InputElementData&, Document*); 76 }; 77 78 // HTML/WMLInputElement hold this struct as member variable 79 // and pass it to the static helper functions in InputElement 80 class InputElementData { 81 public: 82 InputElementData(InputElement*, Element*); 83 ~InputElementData(); 84 inputElement()85 InputElement* inputElement() const { return m_inputElement; } element()86 Element* element() const { return m_element; } 87 placeholderShouldBeVisible()88 bool placeholderShouldBeVisible() const { return m_placeholderShouldBeVisible; } setPlaceholderShouldBeVisible(bool visible)89 void setPlaceholderShouldBeVisible(bool visible) { m_placeholderShouldBeVisible = visible; } 90 91 const AtomicString& name() const; setName(const AtomicString & value)92 void setName(const AtomicString& value) { m_name = value; } 93 value()94 String value() const { return m_value; } setValue(const String & value)95 void setValue(const String& value) { m_value = value; } 96 size()97 int size() const { return m_size; } setSize(int value)98 void setSize(int value) { m_size = value; } 99 maxLength()100 int maxLength() const { return m_maxLength; } setMaxLength(int value)101 void setMaxLength(int value) { m_maxLength = value; } 102 cachedSelectionStart()103 int cachedSelectionStart() const { return m_cachedSelectionStart; } setCachedSelectionStart(int value)104 void setCachedSelectionStart(int value) { m_cachedSelectionStart = value; } 105 cachedSelectionEnd()106 int cachedSelectionEnd() const { return m_cachedSelectionEnd; } setCachedSelectionEnd(int value)107 void setCachedSelectionEnd(int value) { m_cachedSelectionEnd = value; } 108 109 private: 110 InputElement* m_inputElement; 111 Element* m_element; 112 bool m_placeholderShouldBeVisible; 113 AtomicString m_name; 114 String m_value; 115 int m_size; 116 int m_maxLength; 117 int m_cachedSelectionStart; 118 int m_cachedSelectionEnd; 119 }; 120 121 InputElement* toInputElement(Element*); 122 123 } 124 125 #endif 126