Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 223 insertions, 0 deletions

diff --git a/Source/WebCore/editing/EditingStyle.h b/Source/WebCore/editing/EditingStyle.h
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+++ b/Source/WebCore/editing/EditingStyle.h
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+/*
+ * Copyright (C) 2010 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef EditingStyle_h
+#define EditingStyle_h
+
+#include "CSSPropertyNames.h"
+#include "PlatformString.h"
+#include "WritingDirection.h"
+#include <wtf/Forward.h>
+#include <wtf/RefCounted.h>
+#include <wtf/RefPtr.h>
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+class CSSStyleDeclaration;
+class CSSComputedStyleDeclaration;
+class CSSMutableStyleDeclaration;
+class CSSPrimitiveValue;
+class CSSValue;
+class Document;
+class Element;
+class HTMLElement;
+class Node;
+class Position;
+class QualifiedName;
+class RenderStyle;
+class StyledElement;
+class VisibleSelection;
+
+enum TriState { FalseTriState, TrueTriState, MixedTriState };
+
+class EditingStyle : public RefCounted<EditingStyle> {
+public:
+
+    enum PropertiesToInclude { AllProperties, OnlyEditingInheritableProperties, EditingPropertiesInEffect };
+    enum ShouldPreserveWritingDirection { PreserveWritingDirection, DoNotPreserveWritingDirection };
+    enum ShouldExtractMatchingStyle { ExtractMatchingStyle, DoNotExtractMatchingStyle };
+    static float NoFontDelta;
+
+    static PassRefPtr<EditingStyle> create()
+    {
+        return adoptRef(new EditingStyle());
+    }
+
+    static PassRefPtr<EditingStyle> create(Node* node, PropertiesToInclude propertiesToInclude = OnlyEditingInheritableProperties)
+    {
+        return adoptRef(new EditingStyle(node, propertiesToInclude));
+    }
+
+    static PassRefPtr<EditingStyle> create(const Position& position, PropertiesToInclude propertiesToInclude = OnlyEditingInheritableProperties)
+    {
+        return adoptRef(new EditingStyle(position, propertiesToInclude));
+    }
+
+    static PassRefPtr<EditingStyle> create(const CSSStyleDeclaration* style)
+    {
+        return adoptRef(new EditingStyle(style));
+    }
+
+    static PassRefPtr<EditingStyle> create(int propertyID, const String& value)
+    {
+        return adoptRef(new EditingStyle(propertyID, value));
+    }
+
+    ~EditingStyle();
+
+    CSSMutableStyleDeclaration* style() { return m_mutableStyle.get(); }
+    bool textDirection(WritingDirection&) const;
+    bool isEmpty() const;
+    void setStyle(PassRefPtr<CSSMutableStyleDeclaration>);
+    void overrideWithStyle(const CSSMutableStyleDeclaration*);
+    void clear();
+    PassRefPtr<EditingStyle> copy() const;
+    PassRefPtr<EditingStyle> extractAndRemoveBlockProperties();
+    PassRefPtr<EditingStyle> extractAndRemoveTextDirection();
+    void removeBlockProperties();
+    void removeStyleAddedByNode(Node*);
+    void removeStyleConflictingWithStyleOfNode(Node*);
+    void removeNonEditingProperties();
+    void collapseTextDecorationProperties();
+    enum ShouldIgnoreTextOnlyProperties { IgnoreTextOnlyProperties, DoNotIgnoreTextOnlyProperties };
+    TriState triStateOfStyle(EditingStyle*) const;
+    TriState triStateOfStyle(const VisibleSelection&) const;
+    bool conflictsWithInlineStyleOfElement(StyledElement* element) const { return conflictsWithInlineStyleOfElement(element, 0, 0); }
+    bool conflictsWithInlineStyleOfElement(StyledElement* element, EditingStyle* extractedStyle, Vector<CSSPropertyID>& conflictingProperties) const
+    {
+        return conflictsWithInlineStyleOfElement(element, extractedStyle, &conflictingProperties);
+    }
+    bool conflictsWithImplicitStyleOfElement(HTMLElement*, EditingStyle* extractedStyle = 0, ShouldExtractMatchingStyle = DoNotExtractMatchingStyle) const;
+    bool conflictsWithImplicitStyleOfAttributes(HTMLElement*) const;
+    bool extractConflictingImplicitStyleOfAttributes(HTMLElement*, ShouldPreserveWritingDirection, EditingStyle* extractedStyle,
+            Vector<QualifiedName>& conflictingAttributes, ShouldExtractMatchingStyle) const;
+    bool styleIsPresentInComputedStyleOfNode(Node*) const;
+
+    static bool elementIsStyledSpanOrHTMLEquivalent(const HTMLElement*);
+
+    void prepareToApplyAt(const Position&, ShouldPreserveWritingDirection = DoNotPreserveWritingDirection);
+    void mergeTypingStyle(Document*);
+    enum CSSPropertyOverrideMode { OverrideValues, DoNotOverrideValues };
+    void mergeInlineStyleOfElement(StyledElement*, CSSPropertyOverrideMode, PropertiesToInclude = AllProperties);
+    static PassRefPtr<EditingStyle> wrappingStyleForSerialization(Node* context, bool shouldAnnotate);
+    void mergeStyleFromRules(StyledElement*);
+    void mergeStyleFromRulesForSerialization(StyledElement*);
+    void removeStyleFromRulesAndContext(StyledElement*, Node* context);
+    void removePropertiesInElementDefaultStyle(Element*);
+    void forceInline();
+    int legacyFontSize(Document*) const;
+
+    float fontSizeDelta() const { return m_fontSizeDelta; }
+    bool hasFontSizeDelta() const { return m_fontSizeDelta != NoFontDelta; }
+    bool shouldUseFixedDefaultFontSize() const { return m_shouldUseFixedDefaultFontSize; }
+
+    static PassRefPtr<EditingStyle> styleAtSelectionStart(const VisibleSelection&, bool shouldUseBackgroundColorInEffect = false);
+private:
+    EditingStyle();
+    EditingStyle(Node*, PropertiesToInclude);
+    EditingStyle(const Position&, PropertiesToInclude);
+    EditingStyle(const CSSStyleDeclaration*);
+    EditingStyle(int propertyID, const String& value);
+    void init(Node*, PropertiesToInclude);
+    void removeTextFillAndStrokeColorsIfNeeded(RenderStyle*);
+    void setProperty(int propertyID, const String& value, bool important = false);
+    void replaceFontSizeByKeywordIfPossible(RenderStyle*, CSSComputedStyleDeclaration*);
+    void extractFontSizeDelta();
+    TriState triStateOfStyle(CSSStyleDeclaration* styleToCompare, ShouldIgnoreTextOnlyProperties) const;
+    bool conflictsWithInlineStyleOfElement(StyledElement*, EditingStyle* extractedStyle, Vector<CSSPropertyID>* conflictingProperties) const;
+    void mergeInlineAndImplicitStyleOfElement(StyledElement*, CSSPropertyOverrideMode, PropertiesToInclude);
+    void mergeStyle(CSSMutableStyleDeclaration*, CSSPropertyOverrideMode);
+
+    RefPtr<CSSMutableStyleDeclaration> m_mutableStyle;
+    bool m_shouldUseFixedDefaultFontSize;
+    float m_fontSizeDelta;
+
+    friend class HTMLElementEquivalent;
+    friend class HTMLAttributeEquivalent;
+};
+
+class StyleChange {
+public:
+    StyleChange(EditingStyle*, const Position&);
+
+    String cssStyle() const { return m_cssStyle; }
+    bool applyBold() const { return m_applyBold; }
+    bool applyItalic() const { return m_applyItalic; }
+    bool applyUnderline() const { return m_applyUnderline; }
+    bool applyLineThrough() const { return m_applyLineThrough; }
+    bool applySubscript() const { return m_applySubscript; }
+    bool applySuperscript() const { return m_applySuperscript; }
+    bool applyFontColor() const { return m_applyFontColor.length() > 0; }
+    bool applyFontFace() const { return m_applyFontFace.length() > 0; }
+    bool applyFontSize() const { return m_applyFontSize.length() > 0; }
+
+    String fontColor() { return m_applyFontColor; }
+    String fontFace() { return m_applyFontFace; }
+    String fontSize() { return m_applyFontSize; }
+
+    bool operator==(const StyleChange& other)
+    {
+        return m_cssStyle == other.m_cssStyle
+            && m_applyBold == other.m_applyBold
+            && m_applyItalic == other.m_applyItalic
+            && m_applyUnderline == other.m_applyUnderline
+            && m_applyLineThrough == other.m_applyLineThrough
+            && m_applySubscript == other.m_applySubscript
+            && m_applySuperscript == other.m_applySuperscript
+            && m_applyFontColor == other.m_applyFontColor
+            && m_applyFontFace == other.m_applyFontFace
+            && m_applyFontSize == other.m_applyFontSize;
+    }
+    bool operator!=(const StyleChange& other)
+    {
+        return !(*this == other);
+    }
+private:
+    void extractTextStyles(Document*, CSSMutableStyleDeclaration*, bool shouldUseFixedFontDefaultSize);
+
+    String m_cssStyle;
+    bool m_applyBold;
+    bool m_applyItalic;
+    bool m_applyUnderline;
+    bool m_applyLineThrough;
+    bool m_applySubscript;
+    bool m_applySuperscript;
+    String m_applyFontColor;
+    String m_applyFontFace;
+    String m_applyFontSize;
+};
+
+// FIXME: Remove these functions or make them non-global to discourage using CSSStyleDeclaration directly.
+int getIdentifierValue(CSSStyleDeclaration*, int propertyID);
+
+} // namespace WebCore
+
+#endif // EditingStyle_h