Add m-esr52 at 52.6.0

1 files changed, 174 insertions, 0 deletions

diff --git a/layout/style/nsDOMCSSDeclaration.h b/layout/style/nsDOMCSSDeclaration.h
new file mode 100644
index 000000000..5b2308e4a
--- /dev/null
+++ b/layout/style/nsDOMCSSDeclaration.h
@@ -0,0 +1,174 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* base class for DOM objects for element.style and cssStyleRule.style */
+
+#ifndef nsDOMCSSDeclaration_h___
+#define nsDOMCSSDeclaration_h___
+
+#include "nsICSSDeclaration.h"
+
+#include "mozilla/Attributes.h"
+#include "nsIURI.h"
+#include "nsCOMPtr.h"
+
+class nsIPrincipal;
+class nsIDocument;
+struct JSContext;
+class JSObject;
+
+namespace mozilla {
+class DeclarationBlock;
+namespace css {
+class Loader;
+class Rule;
+} // namespace css
+} // namespace mozilla
+
+class nsDOMCSSDeclaration : public nsICSSDeclaration
+{
+public:
+  // Only implement QueryInterface; subclasses have the responsibility
+  // of implementing AddRef/Release.
+  NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) override;
+
+  // Declare addref and release so they can be called on us, but don't
+  // implement them.  Our subclasses must handle their own
+  // refcounting.
+  NS_IMETHOD_(MozExternalRefCountType) AddRef() override = 0;
+  NS_IMETHOD_(MozExternalRefCountType) Release() override = 0;
+
+  NS_DECL_NSICSSDECLARATION
+  using nsICSSDeclaration::GetLength;
+
+  // Require subclasses to implement |GetParentRule|.
+  //NS_DECL_NSIDOMCSSSTYLEDECLARATION
+  NS_IMETHOD GetCssText(nsAString & aCssText) override;
+  NS_IMETHOD SetCssText(const nsAString & aCssText) override;
+  NS_IMETHOD GetPropertyValue(const nsAString & propertyName,
+                              nsAString & _retval) override;
+  virtual already_AddRefed<mozilla::dom::CSSValue>
+    GetPropertyCSSValue(const nsAString & propertyName,
+                        mozilla::ErrorResult& aRv) override;
+  using nsICSSDeclaration::GetPropertyCSSValue;
+  NS_IMETHOD RemoveProperty(const nsAString & propertyName,
+                            nsAString & _retval) override;
+  NS_IMETHOD GetPropertyPriority(const nsAString & propertyName,
+                                 nsAString & _retval) override;
+  NS_IMETHOD SetProperty(const nsAString & propertyName,
+                         const nsAString & value, const nsAString & priority) override;
+  NS_IMETHOD GetLength(uint32_t *aLength) override;
+  NS_IMETHOD GetParentRule(nsIDOMCSSRule * *aParentRule) override = 0;
+
+  // WebIDL interface for CSS2Properties
+#define CSS_PROP_PUBLIC_OR_PRIVATE(publicname_, privatename_) publicname_
+#define CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_,          \
+                 kwtable_, stylestruct_, stylestructoffset_, animtype_)      \
+  void                                                                       \
+  Get##method_(nsAString& aValue, mozilla::ErrorResult& rv)                  \
+  {                                                                          \
+    rv = GetPropertyValue(eCSSProperty_##id_, aValue);                       \
+  }                                                                          \
+                                                                             \
+  void                                                                       \
+  Set##method_(const nsAString& aValue, mozilla::ErrorResult& rv)            \
+  {                                                                          \
+    rv = SetPropertyValue(eCSSProperty_##id_, aValue);                       \
+  }
+
+#define CSS_PROP_LIST_EXCLUDE_INTERNAL
+#define CSS_PROP_LIST_INCLUDE_LOGICAL
+#define CSS_PROP_SHORTHAND(name_, id_, method_, flags_, pref_)  \
+  CSS_PROP(name_, id_, method_, flags_, pref_, X, X, X, X, X)
+#include "nsCSSPropList.h"
+
+#define CSS_PROP_ALIAS(aliasname_, propid_, aliasmethod_, pref_)  \
+  CSS_PROP(X, propid_, aliasmethod_, X, pref_, X, X, X, X, X)
+#include "nsCSSPropAliasList.h"
+#undef CSS_PROP_ALIAS
+
+#undef CSS_PROP_SHORTHAND
+#undef CSS_PROP_LIST_INCLUDE_LOGICAL
+#undef CSS_PROP_LIST_EXCLUDE_INTERNAL
+#undef CSS_PROP
+#undef CSS_PROP_PUBLIC_OR_PRIVATE
+
+  virtual void IndexedGetter(uint32_t aIndex, bool& aFound, nsAString& aPropName) override;
+
+  virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
+
+protected:
+  // The reason for calling GetCSSDeclaration.
+  enum Operation {
+    // We are calling GetCSSDeclaration so that we can read from it.  Does not
+    // allocate a new declaration if we don't have one yet; returns nullptr in
+    // this case.
+    eOperation_Read,
+
+    // We are calling GetCSSDeclaration so that we can set a property on it
+    // or re-parse the whole declaration.  Allocates a new declaration if we
+    // don't have one yet and calls AttributeWillChange.  A nullptr return value
+    // indicates an error allocating the declaration.
+    eOperation_Modify,
+
+    // We are calling GetCSSDeclaration so that we can remove a property from
+    // it.  Does not allocates a new declaration if we don't have one yet;
+    // returns nullptr in this case.  If we do have a declaration, calls
+    // AttributeWillChange.
+    eOperation_RemoveProperty
+  };
+  virtual mozilla::DeclarationBlock* GetCSSDeclaration(Operation aOperation) = 0;
+  virtual nsresult SetCSSDeclaration(mozilla::DeclarationBlock* aDecl) = 0;
+  // Document that we must call BeginUpdate/EndUpdate on around the
+  // calls to SetCSSDeclaration and the style rule mutation that leads
+  // to it.
+  virtual nsIDocument* DocToUpdate() = 0;
+
+  // Information neded to parse a declaration.  We need the mSheetURI
+  // for error reporting, mBaseURI to resolve relative URIs,
+  // mPrincipal for subresource loads, and mCSSLoader for determining
+  // whether we're in quirks mode.  mBaseURI needs to be a strong
+  // pointer because of xml:base possibly creating base URIs on the
+  // fly.  This is why we don't use CSSParsingEnvironment as a return
+  // value, to avoid multiple-refcounting of mBaseURI.
+  struct CSSParsingEnvironment {
+    nsIURI* MOZ_UNSAFE_REF("user of CSSParsingEnviroment must hold an owning "
+                           "reference; reference counting here has unacceptable "
+                           "performance overhead (see bug 649163)") mSheetURI;
+    nsCOMPtr<nsIURI> mBaseURI;
+    nsIPrincipal* MOZ_UNSAFE_REF("user of CSSParsingEnviroment must hold an owning "
+                                 "reference; reference counting here has unacceptable "
+                                 "performance overhead (see bug 649163)") mPrincipal;
+    mozilla::css::Loader* MOZ_UNSAFE_REF("user of CSSParsingEnviroment must hold an owning "
+                                         "reference; reference counting here has unacceptable "
+                                         "performance overhead (see bug 649163)") mCSSLoader;
+  };
+
+  // On failure, mPrincipal should be set to null in aCSSParseEnv.
+  // If mPrincipal is null, the other members may not be set to
+  // anything meaningful.
+  virtual void GetCSSParsingEnvironment(CSSParsingEnvironment& aCSSParseEnv) = 0;
+
+  // An implementation for GetCSSParsingEnvironment for callers wrapping
+  // an css::Rule.
+  static void GetCSSParsingEnvironmentForRule(mozilla::css::Rule* aRule,
+                                              CSSParsingEnvironment& aCSSParseEnv);
+
+  nsresult ParsePropertyValue(const nsCSSPropertyID aPropID,
+                              const nsAString& aPropValue,
+                              bool aIsImportant);
+
+  nsresult ParseCustomPropertyValue(const nsAString& aPropertyName,
+                                    const nsAString& aPropValue,
+                                    bool aIsImportant);
+
+  nsresult RemovePropertyInternal(nsCSSPropertyID aPropID);
+  nsresult RemovePropertyInternal(const nsAString& aProperty);
+
+protected:
+  virtual ~nsDOMCSSDeclaration();
+};
+
+#endif // nsDOMCSSDeclaration_h___