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/*
* Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
* 1999 Waldo Bastian (bastian@kde.org)
* 2001 Andreas Schlapbach (schlpbch@iam.unibe.ch)
* 2001-2003 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2002, 2006, 2007, 2008 Apple Inc. All rights reserved.
*
* 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 "CSSSelector.h"
namespace WebCore {
void CSSSelector::print()
{
if (m_tagHistory)
m_tagHistory->print();
}
unsigned int CSSSelector::specificity()
{
// FIXME: Pseudo-elements and pseudo-classes do not have the same specificity. This function
// isn't quite correct.
int s = (m_tag.localName() == starAtom ? 0 : 1);
switch (m_match) {
case Id:
s += 0x10000;
break;
case Exact:
case Class:
case Set:
case List:
case Hyphen:
case PseudoClass:
case PseudoElement:
case Contain:
case Begin:
case End:
s += 0x100;
case None:
break;
}
if (m_tagHistory)
s += m_tagHistory->specificity();
// make sure it doesn't overflow
return s & 0xffffff;
}
void CSSSelector::extractPseudoType() const
{
if (m_match != PseudoClass && m_match != PseudoElement)
return;
static AtomicString active("active");
static AtomicString after("after");
static AtomicString anyLink("-webkit-any-link");
static AtomicString autofill("-webkit-autofill");
static AtomicString before("before");
static AtomicString checked("checked");
static AtomicString fileUploadButton("-webkit-file-upload-button");
static AtomicString disabled("disabled");
static AtomicString drag("-webkit-drag");
static AtomicString dragAlias("-khtml-drag"); // was documented with this name in Apple documentation, so keep an alias
static AtomicString empty("empty");
static AtomicString enabled("enabled");
static AtomicString firstChild("first-child");
static AtomicString firstLetter("first-letter");
static AtomicString firstLine("first-line");
static AtomicString firstOfType("first-of-type");
static AtomicString nthChild("nth-child(");
static AtomicString nthOfType("nth-of-type(");
static AtomicString nthLastChild("nth-last-child(");
static AtomicString nthLastOfType("nth-last-of-type(");
static AtomicString focus("focus");
static AtomicString hover("hover");
static AtomicString indeterminate("indeterminate");
static AtomicString lastChild("last-child");
static AtomicString lastOfType("last-of-type");
static AtomicString link("link");
static AtomicString lang("lang(");
static AtomicString mediaControlsPanel("-webkit-media-controls-panel");
static AtomicString mediaControlsMuteButton("-webkit-media-controls-mute-button");
static AtomicString mediaControlsPlayButton("-webkit-media-controls-play-button");
static AtomicString mediaControlsTimeDisplay("-webkit-media-controls-time-display");
static AtomicString mediaControlsTimeline("-webkit-media-controls-timeline");
static AtomicString mediaControlsSeekBackButton("-webkit-media-controls-seek-back-button");
static AtomicString mediaControlsSeekForwardButton("-webkit-media-controls-seek-forward-button");
static AtomicString mediaControlsFullscreenButton("-webkit-media-controls-fullscreen-button");
static AtomicString notStr("not(");
static AtomicString onlyChild("only-child");
static AtomicString onlyOfType("only-of-type");
static AtomicString root("root");
static AtomicString searchCancelButton("-webkit-search-cancel-button");
static AtomicString searchDecoration("-webkit-search-decoration");
static AtomicString searchResultsDecoration("-webkit-search-results-decoration");
static AtomicString searchResultsButton("-webkit-search-results-button");
static AtomicString selection("selection");
static AtomicString sliderThumb("-webkit-slider-thumb");
static AtomicString target("target");
static AtomicString visited("visited");
bool element = false; // pseudo-element
bool compat = false; // single colon compatbility mode
m_pseudoType = PseudoUnknown;
if (m_value == active)
m_pseudoType = PseudoActive;
else if (m_value == after) {
m_pseudoType = PseudoAfter;
element = true;
compat = true;
} else if (m_value == anyLink)
m_pseudoType = PseudoAnyLink;
else if (m_value == autofill)
m_pseudoType = PseudoAutofill;
else if (m_value == before) {
m_pseudoType = PseudoBefore;
element = true;
compat = true;
} else if (m_value == checked)
m_pseudoType = PseudoChecked;
else if (m_value == fileUploadButton) {
m_pseudoType = PseudoFileUploadButton;
element = true;
} else if (m_value == disabled)
m_pseudoType = PseudoDisabled;
else if (m_value == drag || m_value == dragAlias)
m_pseudoType = PseudoDrag;
else if (m_value == enabled)
m_pseudoType = PseudoEnabled;
else if (m_value == empty)
m_pseudoType = PseudoEmpty;
else if (m_value == firstChild)
m_pseudoType = PseudoFirstChild;
else if (m_value == lastChild)
m_pseudoType = PseudoLastChild;
else if (m_value == lastOfType)
m_pseudoType = PseudoLastOfType;
else if (m_value == onlyChild)
m_pseudoType = PseudoOnlyChild;
else if (m_value == onlyOfType)
m_pseudoType = PseudoOnlyOfType;
else if (m_value == firstLetter) {
m_pseudoType = PseudoFirstLetter;
element = true;
compat = true;
} else if (m_value == firstLine) {
m_pseudoType = PseudoFirstLine;
element = true;
compat = true;
} else if (m_value == firstOfType)
m_pseudoType = PseudoFirstOfType;
else if (m_value == focus)
m_pseudoType = PseudoFocus;
else if (m_value == hover)
m_pseudoType = PseudoHover;
else if (m_value == indeterminate)
m_pseudoType = PseudoIndeterminate;
else if (m_value == link)
m_pseudoType = PseudoLink;
else if (m_value == lang)
m_pseudoType = PseudoLang;
else if (m_value == mediaControlsPanel) {
m_pseudoType = PseudoMediaControlsPanel;
element = true;
} else if (m_value == mediaControlsMuteButton) {
m_pseudoType = PseudoMediaControlsMuteButton;
element = true;
} else if (m_value == mediaControlsPlayButton) {
m_pseudoType = PseudoMediaControlsPlayButton;
element = true;
} else if (m_value == mediaControlsTimeDisplay) {
m_pseudoType = PseudoMediaControlsTimeDisplay;
element = true;
} else if (m_value == mediaControlsTimeline) {
m_pseudoType = PseudoMediaControlsTimeline;
element = true;
} else if (m_value == mediaControlsSeekBackButton) {
m_pseudoType = PseudoMediaControlsSeekBackButton;
element = true;
} else if (m_value == mediaControlsSeekForwardButton) {
m_pseudoType = PseudoMediaControlsSeekForwardButton;
element = true;
} else if (m_value == mediaControlsFullscreenButton) {
m_pseudoType = PseudoMediaControlsFullscreenButton;
element = true;
} else if (m_value == notStr)
m_pseudoType = PseudoNot;
else if (m_value == nthChild)
m_pseudoType = PseudoNthChild;
else if (m_value == nthOfType)
m_pseudoType = PseudoNthOfType;
else if (m_value == nthLastChild)
m_pseudoType = PseudoNthLastChild;
else if (m_value == nthLastOfType)
m_pseudoType = PseudoNthLastOfType;
else if (m_value == root)
m_pseudoType = PseudoRoot;
else if (m_value == searchCancelButton) {
m_pseudoType = PseudoSearchCancelButton;
element = true;
} else if (m_value == searchDecoration) {
m_pseudoType = PseudoSearchDecoration;
element = true;
} else if (m_value == searchResultsDecoration) {
m_pseudoType = PseudoSearchResultsDecoration;
element = true;
} else if (m_value == searchResultsButton) {
m_pseudoType = PseudoSearchResultsButton;
element = true;
} else if (m_value == selection) {
m_pseudoType = PseudoSelection;
element = true;
} else if (m_value == sliderThumb) {
m_pseudoType = PseudoSliderThumb;
element = true;
} else if (m_value == target)
m_pseudoType = PseudoTarget;
else if (m_value == visited)
m_pseudoType = PseudoVisited;
if (m_match == PseudoClass && element) {
if (!compat)
m_pseudoType = PseudoUnknown;
else
m_match = PseudoElement;
} else if (m_match == PseudoElement && !element)
m_pseudoType = PseudoUnknown;
}
bool CSSSelector::operator==(const CSSSelector& other)
{
const CSSSelector* sel1 = this;
const CSSSelector* sel2 = &other;
while (sel1 && sel2) {
if (sel1->m_tag != sel2->m_tag || sel1->m_attr != sel2->m_attr ||
sel1->relation() != sel2->relation() || sel1->m_match != sel2->m_match ||
sel1->m_value != sel2->m_value ||
sel1->pseudoType() != sel2->pseudoType() ||
sel1->m_argument != sel2->m_argument)
return false;
sel1 = sel1->m_tagHistory;
sel2 = sel2->m_tagHistory;
}
if (sel1 || sel2)
return false;
return true;
}
String CSSSelector::selectorText() const
{
String str = "";
const AtomicString& prefix = m_tag.prefix();
const AtomicString& localName = m_tag.localName();
if (m_match == CSSSelector::None || !prefix.isNull() || localName != starAtom) {
if (prefix.isNull())
str = localName;
else
str = prefix + "|" + localName;
}
const CSSSelector* cs = this;
while (true) {
if (cs->m_match == CSSSelector::Id) {
str += "#";
str += cs->m_value;
} else if (cs->m_match == CSSSelector::Class) {
str += ".";
str += cs->m_value;
} else if (cs->m_match == CSSSelector::PseudoClass) {
str += ":";
str += cs->m_value;
if (cs->pseudoType() == PseudoNot) {
if (CSSSelector* subSel = cs->m_simpleSelector)
str += subSel->selectorText();
str += ")";
} else if (cs->pseudoType() == PseudoLang) {
str += cs->m_argument;
str += ")";
}
} else if (cs->m_match == CSSSelector::PseudoElement) {
str += "::";
str += cs->m_value;
} else if (cs->hasAttribute()) {
str += "[";
const AtomicString& prefix = cs->m_attr.prefix();
if (!prefix.isNull())
str += prefix + "|";
str += cs->m_attr.localName();
switch (cs->m_match) {
case CSSSelector::Exact:
str += "=";
break;
case CSSSelector::Set:
// set has no operator or value, just the attrName
str += "]";
break;
case CSSSelector::List:
str += "~=";
break;
case CSSSelector::Hyphen:
str += "|=";
break;
case CSSSelector::Begin:
str += "^=";
break;
case CSSSelector::End:
str += "$=";
break;
case CSSSelector::Contain:
str += "*=";
break;
default:
break;
}
if (cs->m_match != CSSSelector::Set) {
str += "\"";
str += cs->m_value;
str += "\"]";
}
}
if (cs->relation() != CSSSelector::SubSelector || !cs->m_tagHistory)
break;
cs = cs->m_tagHistory;
}
if (cs->m_tagHistory) {
String tagHistoryText = cs->m_tagHistory->selectorText();
if (cs->relation() == CSSSelector::DirectAdjacent)
str = tagHistoryText + " + " + str;
else if (cs->relation() == CSSSelector::IndirectAdjacent)
str = tagHistoryText + " ~ " + str;
else if (cs->relation() == CSSSelector::Child)
str = tagHistoryText + " > " + str;
else
// Descendant
str = tagHistoryText + " " + str;
}
return str;
}
} // namespace WebCore
|
