cssstyleselector.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 1999 Lars Knoll ([e-mail])
 *           (C) 2004-2005 Allan Sandfeld Jensen ([e-mail])
 * Copyright (C) 2006, 2007 Nicholas Shanks ([e-mail])
 * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 * Copyright (C) 2007 Alexey Proskuryakov <[e-mail]>
 * Copyright (C) 2007, 2008 Eric Seidel <[e-mail]>
 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "config.h"
#include "CSSStyleSelector.h"

#include "CSSBorderImageValue.h"
#include "CSSCursorImageValue.h"
#include "CSSFontFace.h"
#include "CSSFontFaceRule.h"
#include "CSSFontFaceSource.h"
#include "CSSImportRule.h"
#include "CSSMediaRule.h"
#include "CSSParser.h"
#include "CSSPrimitiveValueMappings.h"
#include "CSSProperty.h"
#include "CSSPropertyNames.h"
#include "CSSReflectValue.h"
#include "CSSRuleList.h"
#include "CSSSelector.h"
#include "CSSSelectorList.h"
#include "CSSStyleRule.h"
#include "CSSStyleSheet.h"
#include "CSSTimingFunctionValue.h"
#include "CSSValueList.h"
#include "CSSVariableDependentValue.h"
#include "CSSVariablesDeclaration.h"
#include "CSSVariablesRule.h"
#include "CachedImage.h"
#include "Counter.h"
#include "CounterContent.h"
#include "FocusController.h"
#include "FontFamilyValue.h"
#include "FontValue.h"
#include "Frame.h"
#include "FrameView.h"
#include "HTMLDocument.h"
#include "HTMLElement.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "HTMLTextAreaElement.h"
#include "LinkHash.h"
#include "MatrixTransformOperation.h"
#include "Matrix3DTransformOperation.h"
#include "MediaList.h"
#include "MediaQueryEvaluator.h"
#include "NodeRenderStyle.h"
#include "Page.h"
#include "PageGroup.h"
#include "Pair.h"
#include "PerspectiveTransformOperation.h"
#include "Rect.h"
#include "RenderScrollbar.h"
#include "RenderScrollbarTheme.h"
#include "RenderStyleConstants.h"
#include "RenderTheme.h"
#include "RotateTransformOperation.h"
#include "ScaleTransformOperation.h"
#include "SelectionController.h"
#include "Settings.h"
#include "ShadowValue.h"
#include "SkewTransformOperation.h"
#include "StyleCachedImage.h"
#include "StyleGeneratedImage.h"
#include "StyleSheetList.h"
#include "Text.h"
#include "TransformationMatrix.h"
#include "TranslateTransformOperation.h"
#include "UserAgentStyleSheets.h"
#include "WebKitCSSKeyframeRule.h"
#include "WebKitCSSKeyframesRule.h"
#include "WebKitCSSTransformValue.h"
#include "XMLNames.h"
#include "loader.h"
#include <wtf/StdLibExtras.h>
#include <wtf/Vector.h>

#if ENABLE(DASHBOARD_SUPPORT)
#include "DashboardRegion.h"
#endif

#if ENABLE(SVG)
#include "XLinkNames.h"
#include "SVGNames.h"
#endif

#if ENABLE(WML)
#include "WMLNames.h"
#endif

using namespace std;

namespace WebCore {

using namespace HTMLNames;

// #define STYLE_SHARING_STATS 1

#define HANDLE_INHERIT(prop, Prop) \
if (isInherit) { \
    m_style->set##Prop(m_parentStyle->prop()); \
    return; \
}

#define HANDLE_INHERIT_AND_INITIAL(prop, Prop) \
HANDLE_INHERIT(prop, Prop) \
if (isInitial) { \
    m_style->set##Prop(RenderStyle::initial##Prop()); \
    return; \
}

#define HANDLE_INHERIT_AND_INITIAL_WITH_VALUE(prop, Prop, Value) \
HANDLE_INHERIT(prop, Prop) \
if (isInitial) { \
    m_style->set##Prop(RenderStyle::initial##Value());\
    return;\
}

#define HANDLE_FILL_LAYER_INHERIT_AND_INITIAL(layerType, LayerType, prop, Prop) \
if (isInherit) { \
    FillLayer* currChild = m_style->access##LayerType##Layers(); \
    FillLayer* prevChild = 0; \
    const FillLayer* currParent = m_parentStyle->layerType##Layers(); \
    while (currParent && currParent->is##Prop##Set()) { \
        if (!currChild) { \
            /* Need to make a new layer.*/ \
            currChild = new FillLayer(LayerType##FillLayer); \
            prevChild->setNext(currChild); \
        } \
        currChild->set##Prop(currParent->prop()); \
        prevChild = currChild; \
        currChild = prevChild->next(); \
        currParent = currParent->next(); \
    } \
    \
    while (currChild) { \
        /* Reset any remaining layers to not have the property set. */ \
        currChild->clear##Prop(); \
        currChild = currChild->next(); \
    } \
} else if (isInitial) { \
    FillLayer* currChild = m_style->access##LayerType##Layers(); \
    currChild->set##Prop(FillLayer::initialFill##Prop(LayerType##FillLayer)); \
    for (currChild = currChild->next(); currChild; currChild = currChild->next()) \
        currChild->clear##Prop(); \
}

#define HANDLE_FILL_LAYER_VALUE(layerType, LayerType, prop, Prop, value) { \
HANDLE_FILL_LAYER_INHERIT_AND_INITIAL(layerType, LayerType, prop, Prop) \
if (isInherit || isInitial) \
    return; \
FillLayer* currChild = m_style->access##LayerType##Layers(); \
FillLayer* prevChild = 0; \
if (value->isValueList()) { \
    /* Walk each value and put it into a layer, creating new layers as needed. */ \
    CSSValueList* valueList = static_cast<CSSValueList*>(value); \
    for (unsigned int i = 0; i < valueList->length(); i++) { \
        if (!currChild) { \
            /* Need to make a new layer to hold this value */ \
            currChild = new FillLayer(LayerType##FillLayer); \
            prevChild->setNext(currChild); \
        } \
        mapFill##Prop(currChild, valueList->itemWithoutBoundsCheck(i)); \
        prevChild = currChild; \
        currChild = currChild->next(); \
    } \
} else { \
    mapFill##Prop(currChild, value); \
    currChild = currChild->next(); \
} \
while (currChild) { \
    /* Reset all remaining layers to not have the property set. */ \
    currChild->clear##Prop(); \
    currChild = currChild->next(); \
} }

#define HANDLE_BACKGROUND_INHERIT_AND_INITIAL(prop, Prop) \
HANDLE_FILL_LAYER_INHERIT_AND_INITIAL(background, Background, prop, Prop)

#define HANDLE_BACKGROUND_VALUE(prop, Prop, value) \
HANDLE_FILL_LAYER_VALUE(background, Background, prop, Prop, value)

#define HANDLE_MASK_INHERIT_AND_INITIAL(prop, Prop) \
HANDLE_FILL_LAYER_INHERIT_AND_INITIAL(mask, Mask, prop, Prop)

#define HANDLE_MASK_VALUE(prop, Prop, value) \
HANDLE_FILL_LAYER_VALUE(mask, Mask, prop, Prop, value)

#define HANDLE_ANIMATION_INHERIT_AND_INITIAL(prop, Prop) \
if (isInherit) { \
    AnimationList* list = m_style->accessAnimations(); \
    const AnimationList* parentList = m_parentStyle->animations(); \
    size_t i = 0, parentSize = parentList ? parentList->size() : 0; \
    for ( ; i < parentSize && parentList->animation(i)->is##Prop##Set(); ++i) { \
        if (list->size() <= i) \
            list->append(Animation::create()); \
        list->animation(i)->set##Prop(parentList->animation(i)->prop()); \
    } \
    \
    /* Reset any remaining animations to not have the property set. */ \
    for ( ; i < list->size(); ++i) \
        list->animation(i)->clear##Prop(); \
} else if (isInitial) { \
    AnimationList* list = m_style->accessAnimations(); \
    if (list->isEmpty()) \
        list->append(Animation::create()); \
    list->animation(0)->set##Prop(Animation::initialAnimation##Prop()); \
    for (size_t i = 1; i < list->size(); ++i) \
        list->animation(0)->clear##Prop(); \
}

#define HANDLE_ANIMATION_VALUE(prop, Prop, value) { \
HANDLE_ANIMATION_INHERIT_AND_INITIAL(prop, Prop) \
if (isInherit || isInitial) \
    return; \
AnimationList* list = m_style->accessAnimations(); \
size_t childIndex = 0; \
if (value->isValueList()) { \
    /* Walk each value and put it into an animation, creating new animations as needed. */ \
    CSSValueList* valueList = static_cast<CSSValueList*>(value); \
    for (unsigned int i = 0; i < valueList->length(); i++) { \
        if (childIndex <= list->size()) \
            list->append(Animation::create()); \
        mapAnimation##Prop(list->animation(childIndex), valueList->itemWithoutBoundsCheck(i)); \
        ++childIndex; \
    } \
} else { \
    if (list->isEmpty()) \
        list->append(Animation::create()); \
    mapAnimation##Prop(list->animation(childIndex), value); \
    childIndex = 1; \
} \
for ( ; childIndex < list->size(); ++childIndex) { \
    /* Reset all remaining animations to not have the property set. */ \
    list->animation(childIndex)->clear##Prop(); \
} \
}

#define HANDLE_TRANSITION_INHERIT_AND_INITIAL(prop, Prop) \
if (isInherit) { \
    AnimationList* list = m_style->accessTransitions(); \
    const AnimationList* parentList = m_parentStyle->transitions(); \
    size_t i = 0, parentSize = parentList ? parentList->size() : 0; \
    for ( ; i < parentSize && parentList->animation(i)->is##Prop##Set(); ++i) { \
        if (list->size() <= i) \
            list->append(Animation::create()); \
        list->animation(i)->set##Prop(parentList->animation(i)->prop()); \
    } \
    \
    /* Reset any remaining transitions to not have the property set. */ \
    for ( ; i < list->size(); ++i) \
        list->animation(i)->clear##Prop(); \
} else if (isInitial) { \
    AnimationList* list = m_style->accessTransitions(); \
    if (list->isEmpty()) \
        list->append(Animation::create()); \
    list->animation(0)->set##Prop(Animation::initialAnimation##Prop()); \
    for (size_t i = 1; i < list->size(); ++i) \
        list->animation(0)->clear##Prop(); \
}

#define HANDLE_TRANSITION_VALUE(prop, Prop, value) { \
HANDLE_TRANSITION_INHERIT_AND_INITIAL(prop, Prop) \
if (isInherit || isInitial) \
    return; \
AnimationList* list = m_style->accessTransitions(); \
size_t childIndex = 0; \
if (value->isValueList()) { \
    /* Walk each value and put it into a transition, creating new animations as needed. */ \
    CSSValueList* valueList = static_cast<CSSValueList*>(value); \
    for (unsigned int i = 0; i < valueList->length(); i++) { \
        if (childIndex <= list->size()) \
            list->append(Animation::create()); \
        mapAnimation##Prop(list->animation(childIndex), valueList->itemWithoutBoundsCheck(i)); \
        ++childIndex; \
    } \
} else { \
    if (list->isEmpty()) \
        list->append(Animation::create()); \
    mapAnimation##Prop(list->animation(childIndex), value); \
    childIndex = 1; \
} \
for ( ; childIndex < list->size(); ++childIndex) { \
    /* Reset all remaining transitions to not have the property set. */ \
    list->animation(childIndex)->clear##Prop(); \
} \
}

#define HANDLE_INHERIT_COND(propID, prop, Prop) \
if (id == propID) { \
    m_style->set##Prop(m_parentStyle->prop()); \
    return; \
}
    
#define HANDLE_INHERIT_COND_WITH_BACKUP(propID, prop, propAlt, Prop) \
if (id == propID) { \
    if (m_parentStyle->prop().isValid()) \
        m_style->set##Prop(m_parentStyle->prop()); \
    else \
        m_style->set##Prop(m_parentStyle->propAlt()); \
    return; \
}

#define HANDLE_INITIAL_COND(propID, Prop) \
if (id == propID) { \
    m_style->set##Prop(RenderStyle::initial##Prop()); \
    return; \
}

#define HANDLE_INITIAL_COND_WITH_VALUE(propID, Prop, Value) \
if (id == propID) { \
    m_style->set##Prop(RenderStyle::initial##Value()); \
    return; \
}