1/*
2 * Copyright (C) 2018 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "CSSParserContext.h"
28
29#include "Document.h"
30#include "DocumentLoader.h"
31#include "Page.h"
32#include "RuntimeEnabledFeatures.h"
33#include "Settings.h"
34#include <wtf/NeverDestroyed.h>
35
36namespace WebCore {
37
38const CSSParserContext& strictCSSParserContext()
39{
40 static NeverDestroyed<CSSParserContext> strictContext(HTMLStandardMode);
41 return strictContext;
42}
43
44CSSParserContext::CSSParserContext(CSSParserMode mode, const URL& baseURL)
45 : baseURL(baseURL)
46 , mode(mode)
47{
48}
49
50CSSParserContext::CSSParserContext(const Document& document, const URL& sheetBaseURL, const String& charset)
51 : baseURL(sheetBaseURL.isNull() ? document.baseURL() : sheetBaseURL)
52 , charset(charset)
53 , mode(document.inQuirksMode() ? HTMLQuirksMode : HTMLStandardMode)
54 , isHTMLDocument(document.isHTMLDocument())
55 , hasDocumentSecurityOrigin(sheetBaseURL.isNull() || document.securityOrigin().canRequest(baseURL))
56{
57 enforcesCSSMIMETypeInNoQuirksMode = document.settings().enforceCSSMIMETypeInNoQuirksMode();
58 useLegacyBackgroundSizeShorthandBehavior = document.settings().useLegacyBackgroundSizeShorthandBehavior();
59#if ENABLE(TEXT_AUTOSIZING)
60 textAutosizingEnabled = document.settings().textAutosizingEnabled();
61#endif
62#if ENABLE(OVERFLOW_SCROLLING_TOUCH)
63 legacyOverflowScrollingTouchEnabled = document.settings().legacyOverflowScrollingTouchEnabled();
64 // The legacy -webkit-overflow-scrolling: touch behavior may have been disabled through the website policy,
65 // in that case we want to disable the legacy behavior regardless of what the setting says.
66 if (auto* loader = document.loader()) {
67 if (loader->legacyOverflowScrollingTouchPolicy() == LegacyOverflowScrollingTouchPolicy::Disable)
68 legacyOverflowScrollingTouchEnabled = false;
69 }
70#endif
71 springTimingFunctionEnabled = document.settings().springTimingFunctionEnabled();
72 constantPropertiesEnabled = document.settings().constantPropertiesEnabled();
73 colorFilterEnabled = document.settings().colorFilterEnabled();
74#if ENABLE(ATTACHMENT_ELEMENT)
75 attachmentEnabled = RuntimeEnabledFeatures::sharedFeatures().attachmentElementEnabled();
76#endif
77 deferredCSSParserEnabled = document.settings().deferredCSSParserEnabled();
78 useSystemAppearance = document.page() ? document.page()->useSystemAppearance() : false;
79}
80
81bool operator==(const CSSParserContext& a, const CSSParserContext& b)
82{
83 return a.baseURL == b.baseURL
84 && a.charset == b.charset
85 && a.mode == b.mode
86 && a.isHTMLDocument == b.isHTMLDocument
87#if ENABLE(TEXT_AUTOSIZING)
88 && a.textAutosizingEnabled == b.textAutosizingEnabled
89#endif
90#if ENABLE(OVERFLOW_SCROLLING_TOUCH)
91 && a.legacyOverflowScrollingTouchEnabled == b.legacyOverflowScrollingTouchEnabled
92#endif
93 && a.enforcesCSSMIMETypeInNoQuirksMode == b.enforcesCSSMIMETypeInNoQuirksMode
94 && a.useLegacyBackgroundSizeShorthandBehavior == b.useLegacyBackgroundSizeShorthandBehavior
95 && a.springTimingFunctionEnabled == b.springTimingFunctionEnabled
96 && a.constantPropertiesEnabled == b.constantPropertiesEnabled
97 && a.colorFilterEnabled == b.colorFilterEnabled
98#if ENABLE(ATTACHMENT_ELEMENT)
99 && a.attachmentEnabled == b.attachmentEnabled
100#endif
101 && a.deferredCSSParserEnabled == b.deferredCSSParserEnabled
102 && a.hasDocumentSecurityOrigin == b.hasDocumentSecurityOrigin
103 && a.useSystemAppearance == b.useSystemAppearance;
104}
105
106}
107