1 /*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * (C) 2001 Dirk Mueller (mueller@kde.org)
5 * (C) 2006 Alexey Proskuryakov (ap@webkit.org)
6 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
7 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
8 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
9 * Copyright (C) 2013 Google Inc. All rights reserved.
10 *
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Library General Public
13 * License as published by the Free Software Foundation; either
14 * version 2 of the License, or (at your option) any later version.
15 *
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Library General Public License for more details.
20 *
21 * You should have received a copy of the GNU Library General Public License
22 * along with this library; see the file COPYING.LIB. If not, write to
23 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
24 * Boston, MA 02110-1301, USA.
25 */
26
27 #include "config.h"
28 #include "core/dom/DocumentStyleSheetCollection.h"
29
30 #include "core/css/resolver/StyleResolver.h"
31 #include "core/dom/Document.h"
32 #include "core/dom/DocumentStyleSheetCollector.h"
33 #include "core/dom/ProcessingInstruction.h"
34 #include "core/dom/StyleEngine.h"
35 #include "core/dom/StyleSheetCandidate.h"
36 #include "platform/RuntimeEnabledFeatures.h"
37
38 namespace WebCore {
39
DocumentStyleSheetCollection(TreeScope & treeScope)40 DocumentStyleSheetCollection::DocumentStyleSheetCollection(TreeScope& treeScope)
41 : TreeScopeStyleSheetCollection(treeScope)
42 {
43 ASSERT(treeScope.rootNode() == treeScope.rootNode().document());
44 }
45
collectStyleSheetsFromCandidates(StyleEngine * engine,DocumentStyleSheetCollector & collector)46 void DocumentStyleSheetCollection::collectStyleSheetsFromCandidates(StyleEngine* engine, DocumentStyleSheetCollector& collector)
47 {
48 DocumentOrderedList::iterator begin = m_styleSheetCandidateNodes.begin();
49 DocumentOrderedList::iterator end = m_styleSheetCandidateNodes.end();
50 for (DocumentOrderedList::iterator it = begin; it != end; ++it) {
51 Node* n = *it;
52 StyleSheetCandidate candidate(*n);
53
54 ASSERT(!candidate.isXSL());
55 if (candidate.isImport()) {
56 Document* document = candidate.importedDocument();
57 if (!document)
58 continue;
59 if (collector.hasVisited(document))
60 continue;
61 collector.willVisit(document);
62 document->styleEngine()->updateStyleSheetsInImport(collector);
63 continue;
64 }
65
66 if (candidate.isEnabledAndLoading()) {
67 // it is loading but we should still decide which style sheet set to use
68 if (candidate.hasPreferrableName(engine->preferredStylesheetSetName()))
69 engine->selectStylesheetSetName(candidate.title());
70 continue;
71 }
72
73 StyleSheet* sheet = candidate.sheet();
74 if (!sheet)
75 continue;
76
77 if (candidate.hasPreferrableName(engine->preferredStylesheetSetName()))
78 engine->selectStylesheetSetName(candidate.title());
79 collector.appendSheetForList(sheet);
80 if (candidate.canBeActivated(engine->preferredStylesheetSetName()))
81 collector.appendActiveStyleSheet(toCSSStyleSheet(sheet));
82 }
83 }
84
collectStyleSheets(StyleEngine * engine,DocumentStyleSheetCollector & collector)85 void DocumentStyleSheetCollection::collectStyleSheets(StyleEngine* engine, DocumentStyleSheetCollector& collector)
86 {
87 ASSERT(document().styleEngine() == engine);
88 collector.appendActiveStyleSheets(engine->injectedAuthorStyleSheets());
89 collector.appendActiveStyleSheets(engine->documentAuthorStyleSheets());
90 collectStyleSheetsFromCandidates(engine, collector);
91 }
92
updateActiveStyleSheets(StyleEngine * engine,StyleResolverUpdateMode updateMode)93 void DocumentStyleSheetCollection::updateActiveStyleSheets(StyleEngine* engine, StyleResolverUpdateMode updateMode)
94 {
95 StyleSheetCollection collection;
96 ActiveDocumentStyleSheetCollector collector(collection);
97 collectStyleSheets(engine, collector);
98
99 StyleSheetChange change;
100 analyzeStyleSheetChange(updateMode, collection, change);
101
102 if (change.styleResolverUpdateType == Reconstruct) {
103 engine->clearMasterResolver();
104 // FIMXE: The following depends on whether StyleRuleFontFace was modified or not.
105 // No need to always-clear font cache.
106 engine->clearFontCache();
107 } else if (StyleResolver* styleResolver = engine->resolver()) {
108 // FIXME: We might have already had styles in child treescope. In this case, we cannot use buildScopedStyleTreeInDocumentOrder.
109 // Need to change "false" to some valid condition.
110 styleResolver->setBuildScopedStyleTreeInDocumentOrder(false);
111 if (change.styleResolverUpdateType != Additive) {
112 ASSERT(change.styleResolverUpdateType == Reset);
113 resetAllRuleSetsInTreeScope(styleResolver);
114 engine->removeFontFaceRules(change.fontFaceRulesToRemove);
115 styleResolver->removePendingAuthorStyleSheets(m_activeAuthorStyleSheets);
116 styleResolver->lazyAppendAuthorStyleSheets(0, collection.activeAuthorStyleSheets());
117 } else {
118 styleResolver->lazyAppendAuthorStyleSheets(m_activeAuthorStyleSheets.size(), collection.activeAuthorStyleSheets());
119 }
120 }
121 if (change.requiresFullStyleRecalc)
122 document().setNeedsStyleRecalc(SubtreeStyleChange);
123
124 m_scopingNodesForStyleScoped.didRemoveScopingNodes();
125
126 collection.swap(*this);
127
128 updateUsesRemUnits();
129 }
130
131 }
132