| /* |
| * 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 { |
| |
| 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 = *new AtomicString("active"); |
| static AtomicString& after = *new AtomicString("after"); |
| static AtomicString& anyLink = *new AtomicString("-webkit-any-link"); |
| static AtomicString& autofill = *new AtomicString("-webkit-autofill"); |
| static AtomicString& before = *new AtomicString("before"); |
| static AtomicString& checked = *new AtomicString("checked"); |
| static AtomicString& fileUploadButton = *new AtomicString("-webkit-file-upload-button"); |
| static AtomicString& disabled = *new AtomicString("disabled"); |
| static AtomicString& readOnly = *new AtomicString("read-only"); |
| static AtomicString& readWrite = *new AtomicString("read-write"); |
| static AtomicString& drag = *new AtomicString("-webkit-drag"); |
| static AtomicString& dragAlias = *new AtomicString("-khtml-drag"); // was documented with this name in Apple documentation, so keep an alias |
| static AtomicString& empty = *new AtomicString("empty"); |
| static AtomicString& enabled = *new AtomicString("enabled"); |
| static AtomicString& firstChild = *new AtomicString("first-child"); |
| static AtomicString& firstLetter = *new AtomicString("first-letter"); |
| static AtomicString& firstLine = *new AtomicString("first-line"); |
| static AtomicString& firstOfType = *new AtomicString("first-of-type"); |
| static AtomicString& fullPageMedia = *new AtomicString("-webkit-full-page-media"); |
| static AtomicString& nthChild = *new AtomicString("nth-child("); |
| static AtomicString& nthOfType = *new AtomicString("nth-of-type("); |
| static AtomicString& nthLastChild = *new AtomicString("nth-last-child("); |
| static AtomicString& nthLastOfType = *new AtomicString("nth-last-of-type("); |
| static AtomicString& focus = *new AtomicString("focus"); |
| static AtomicString& hover = *new AtomicString("hover"); |
| static AtomicString& indeterminate = *new AtomicString("indeterminate"); |
| static AtomicString& inputPlaceholder = *new AtomicString("-webkit-input-placeholder"); |
| static AtomicString& lastChild = *new AtomicString("last-child"); |
| static AtomicString& lastOfType = *new AtomicString("last-of-type"); |
| static AtomicString& link = *new AtomicString("link"); |
| static AtomicString& lang = *new AtomicString("lang("); |
| static AtomicString& mediaControlsPanel = *new AtomicString("-webkit-media-controls-panel"); |
| static AtomicString& mediaControlsMuteButton = *new AtomicString("-webkit-media-controls-mute-button"); |
| static AtomicString& mediaControlsPlayButton = *new AtomicString("-webkit-media-controls-play-button"); |
| static AtomicString& mediaControlsTimeDisplay = *new AtomicString("-webkit-media-controls-time-display"); |
| static AtomicString& mediaControlsTimeline = *new AtomicString("-webkit-media-controls-timeline"); |
| static AtomicString& mediaControlsSeekBackButton = *new AtomicString("-webkit-media-controls-seek-back-button"); |
| static AtomicString& mediaControlsSeekForwardButton = *new AtomicString("-webkit-media-controls-seek-forward-button"); |
| static AtomicString& mediaControlsFullscreenButton = *new AtomicString("-webkit-media-controls-fullscreen-button"); |
| static AtomicString& notStr = *new AtomicString("not("); |
| static AtomicString& onlyChild = *new AtomicString("only-child"); |
| static AtomicString& onlyOfType = *new AtomicString("only-of-type"); |
| static AtomicString& resizer = *new AtomicString("-webkit-resizer"); |
| static AtomicString& root = *new AtomicString("root"); |
| static AtomicString& scrollbar = *new AtomicString("-webkit-scrollbar"); |
| static AtomicString& scrollbarButton = *new AtomicString("-webkit-scrollbar-button"); |
| static AtomicString& scrollbarCorner = *new AtomicString("-webkit-scrollbar-corner"); |
| static AtomicString& scrollbarThumb = *new AtomicString("-webkit-scrollbar-thumb"); |
| static AtomicString& scrollbarTrack = *new AtomicString("-webkit-scrollbar-track"); |
| static AtomicString& scrollbarTrackPiece = *new AtomicString("-webkit-scrollbar-track-piece"); |
| static AtomicString& searchCancelButton = *new AtomicString("-webkit-search-cancel-button"); |
| static AtomicString& searchDecoration = *new AtomicString("-webkit-search-decoration"); |
| static AtomicString& searchResultsDecoration = *new AtomicString("-webkit-search-results-decoration"); |
| static AtomicString& searchResultsButton = *new AtomicString("-webkit-search-results-button"); |
| static AtomicString& selection = *new AtomicString("selection"); |
| static AtomicString& sliderThumb = *new AtomicString("-webkit-slider-thumb"); |
| static AtomicString& target = *new AtomicString("target"); |
| static AtomicString& visited = *new AtomicString("visited"); |
| static AtomicString& windowInactive = *new AtomicString("window-inactive"); |
| static AtomicString& decrement = *new AtomicString("decrement"); |
| static AtomicString& increment = *new AtomicString("increment"); |
| static AtomicString& start = *new AtomicString("start"); |
| static AtomicString& end = *new AtomicString("end"); |
| static AtomicString& horizontal = *new AtomicString("horizontal"); |
| static AtomicString& vertical = *new AtomicString("vertical"); |
| static AtomicString& doubleButton = *new AtomicString("double-button"); |
| static AtomicString& singleButton = *new AtomicString("single-button"); |
| static AtomicString& noButton = *new AtomicString("no-button"); |
| static AtomicString& cornerPresent = *new AtomicString("corner-present"); |
| |
| 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 == readOnly) |
| m_pseudoType = PseudoReadOnly; |
| else if (m_value == readWrite) |
| m_pseudoType = PseudoReadWrite; |
| 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 == fullPageMedia) |
| m_pseudoType = PseudoFullPageMedia; |
| else if (m_value == inputPlaceholder) { |
| m_pseudoType = PseudoInputPlaceholder; |
| element = true; |
| } 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 == windowInactive) |
| m_pseudoType = PseudoWindowInactive; |
| else if (m_value == decrement) |
| m_pseudoType = PseudoDecrement; |
| else if (m_value == increment) |
| m_pseudoType = PseudoIncrement; |
| else if (m_value == start) |
| m_pseudoType = PseudoStart; |
| else if (m_value == end) |
| m_pseudoType = PseudoEnd; |
| else if (m_value == horizontal) |
| m_pseudoType = PseudoHorizontal; |
| else if (m_value == vertical) |
| m_pseudoType = PseudoVertical; |
| else if (m_value == doubleButton) |
| m_pseudoType = PseudoDoubleButton; |
| else if (m_value == singleButton) |
| m_pseudoType = PseudoSingleButton; |
| else if (m_value == noButton) |
| m_pseudoType = PseudoNoButton; |
| else if (m_value == scrollbarCorner) { |
| element = true; |
| m_pseudoType = PseudoScrollbarCorner; |
| } else if (m_value == resizer) { |
| element = true; |
| m_pseudoType = PseudoResizer; |
| } else if (m_value == scrollbar) { |
| element = true; |
| m_pseudoType = PseudoScrollbar; |
| } else if (m_value == scrollbarButton) { |
| element = true; |
| m_pseudoType = PseudoScrollbarButton; |
| } else if (m_value == scrollbarCorner) { |
| element = true; |
| m_pseudoType = PseudoScrollbarCorner; |
| } else if (m_value == scrollbarThumb) { |
| element = true; |
| m_pseudoType = PseudoScrollbarThumb; |
| } else if (m_value == scrollbarTrack) { |
| element = true; |
| m_pseudoType = PseudoScrollbarTrack; |
| } else if (m_value == scrollbarTrackPiece) { |
| element = true; |
| m_pseudoType = PseudoScrollbarTrackPiece; |
| } else if (m_value == cornerPresent) |
| m_pseudoType = PseudoCornerPresent; |
| 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 |
