The Tor Browser / file comparison
comparison: content/base/src/nsStyleLinkElement.h
content/base/src/nsStyleLinkElement.h
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
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| -1:000000000000 | 0:5392c2567395 |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 /* | |
| 8 * A base class which implements nsIStyleSheetLinkingElement and can | |
| 9 * be subclassed by various content nodes that want to load | |
| 10 * stylesheets (<style>, <link>, processing instructions, etc). | |
| 11 */ | |
| 12 | |
| 13 #ifndef nsStyleLinkElement_h___ | |
| 14 #define nsStyleLinkElement_h___ | |
| 15 | |
| 16 #include "mozilla/Attributes.h" | |
| 17 #include "nsCOMPtr.h" | |
| 18 #include "nsIStyleSheetLinkingElement.h" | |
| 19 #include "nsCSSStyleSheet.h" | |
| 20 #include "nsTArray.h" | |
| 21 #include "mozilla/CORSMode.h" | |
| 22 | |
| 23 class nsIDocument; | |
| 24 class nsIURI; | |
| 25 | |
| 26 namespace mozilla { | |
| 27 namespace dom { | |
| 28 class ShadowRoot; | |
| 29 } // namespace dom | |
| 30 } // namespace mozilla | |
| 31 | |
| 32 class nsStyleLinkElement : public nsIStyleSheetLinkingElement | |
| 33 { | |
| 34 public: | |
| 35 nsStyleLinkElement(); | |
| 36 virtual ~nsStyleLinkElement(); | |
| 37 | |
| 38 NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) MOZ_OVERRIDE = 0; | |
| 39 | |
| 40 nsCSSStyleSheet* GetSheet() const { return mStyleSheet; } | |
| 41 | |
| 42 // nsIStyleSheetLinkingElement | |
| 43 NS_IMETHOD SetStyleSheet(nsCSSStyleSheet* aStyleSheet) MOZ_OVERRIDE; | |
| 44 NS_IMETHOD GetStyleSheet(nsIStyleSheet*& aStyleSheet) MOZ_OVERRIDE; | |
| 45 NS_IMETHOD InitStyleLinkElement(bool aDontLoadStyle) MOZ_OVERRIDE; | |
| 46 NS_IMETHOD UpdateStyleSheet(nsICSSLoaderObserver* aObserver, | |
| 47 bool* aWillNotify, | |
| 48 bool* aIsAlternate) MOZ_OVERRIDE; | |
| 49 NS_IMETHOD SetEnableUpdates(bool aEnableUpdates) MOZ_OVERRIDE; | |
| 50 NS_IMETHOD GetCharset(nsAString& aCharset) MOZ_OVERRIDE; | |
| 51 | |
| 52 virtual void OverrideBaseURI(nsIURI* aNewBaseURI) MOZ_OVERRIDE; | |
| 53 virtual void SetLineNumber(uint32_t aLineNumber) MOZ_OVERRIDE; | |
| 54 | |
| 55 enum RelValue { | |
| 56 ePREFETCH = 0x00000001, | |
| 57 eDNS_PREFETCH = 0x00000002, | |
| 58 eSTYLESHEET = 0x00000004, | |
| 59 eNEXT = 0x00000008, | |
| 60 eALTERNATE = 0x00000010, | |
| 61 }; | |
| 62 | |
| 63 // The return value is a bitwise or of 0 or more RelValues | |
| 64 static uint32_t ParseLinkTypes(const nsAString& aTypes); | |
| 65 | |
| 66 void UpdateStyleSheetInternal() | |
| 67 { | |
| 68 UpdateStyleSheetInternal(nullptr, nullptr); | |
| 69 } | |
| 70 protected: | |
| 71 /** | |
| 72 * @param aOldDocument should be non-null only if we're updating because we | |
| 73 * removed the node from the document. | |
| 74 * @param aForceUpdate true will force the update even if the URI has not | |
| 75 * changed. This should be used in cases when something | |
| 76 * about the content that affects the resulting sheet | |
| 77 * changed but the URI may not have changed. | |
| 78 */ | |
| 79 nsresult UpdateStyleSheetInternal(nsIDocument *aOldDocument, | |
| 80 mozilla::dom::ShadowRoot *aOldShadowRoot, | |
| 81 bool aForceUpdate = false); | |
| 82 | |
| 83 void UpdateStyleSheetScopedness(bool aIsNowScoped); | |
| 84 | |
| 85 virtual already_AddRefed<nsIURI> GetStyleSheetURL(bool* aIsInline) = 0; | |
| 86 virtual void GetStyleSheetInfo(nsAString& aTitle, | |
| 87 nsAString& aType, | |
| 88 nsAString& aMedia, | |
| 89 bool* aIsScoped, | |
| 90 bool* aIsAlternate) = 0; | |
| 91 | |
| 92 virtual mozilla::CORSMode GetCORSMode() const | |
| 93 { | |
| 94 // Default to no CORS | |
| 95 return mozilla::CORS_NONE; | |
| 96 } | |
| 97 | |
| 98 // CC methods | |
| 99 void Unlink(); | |
| 100 void Traverse(nsCycleCollectionTraversalCallback &cb); | |
| 101 | |
| 102 private: | |
| 103 /** | |
| 104 * @param aOldDocument should be non-null only if we're updating because we | |
| 105 * removed the node from the document. | |
| 106 * @param aOldShadowRoot The ShadowRoot that used to contain the style. | |
| 107 * Passed as a parameter because on an update, the node | |
| 108 * is removed from the tree before the sheet is removed | |
| 109 * from the ShadowRoot. | |
| 110 * @param aForceUpdate true will force the update even if the URI has not | |
| 111 * changed. This should be used in cases when something | |
| 112 * about the content that affects the resulting sheet | |
| 113 * changed but the URI may not have changed. | |
| 114 */ | |
| 115 nsresult DoUpdateStyleSheet(nsIDocument* aOldDocument, | |
| 116 mozilla::dom::ShadowRoot* aOldShadowRoot, | |
| 117 nsICSSLoaderObserver* aObserver, | |
| 118 bool* aWillNotify, | |
| 119 bool* aIsAlternate, | |
| 120 bool aForceUpdate); | |
| 121 | |
| 122 nsRefPtr<nsCSSStyleSheet> mStyleSheet; | |
| 123 protected: | |
| 124 bool mDontLoadStyle; | |
| 125 bool mUpdatesEnabled; | |
| 126 uint32_t mLineNumber; | |
| 127 }; | |
| 128 | |
| 129 #endif /* nsStyleLinkElement_h___ */ | |
| 130 |
