import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/svg/SVGTests.h

@@ -0,0 +1,114 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef mozilla_dom_SVGTests_h
+#define mozilla_dom_SVGTests_h
+
+#include "nsStringFwd.h"
+#include "SVGStringList.h"
+#include "nsCOMPtr.h"
+
+class nsAttrValue;
+class nsIAtom;
+class nsString;
+
+namespace mozilla {
+class DOMSVGStringList;
+
+#define MOZILLA_DOMSVGTESTS_IID \
+   { 0x92370da8, 0xda28, 0x4895, \
+     {0x9b, 0x1b, 0xe0, 0x06, 0x0d, 0xb7, 0x3f, 0xc3 } }
+
+namespace dom {
+
+class SVGTests : public nsISupports
+{
+public:
+  NS_DECLARE_STATIC_IID_ACCESSOR(MOZILLA_DOMSVGTESTS_IID)
+
+  SVGTests();
+
+  friend class mozilla::DOMSVGStringList;
+  typedef mozilla::SVGStringList SVGStringList;
+
+  /**
+   * Compare the language name(s) in a systemLanguage attribute to the
+   * user's language preferences, as defined in
+   * http://www.w3.org/TR/SVG11/struct.html#SystemLanguageAttribute
+   * We have a match if a language name in the users language preferences
+   * exactly equals one of the language names or exactly equals a prefix of
+   * one of the language names in the systemLanguage attribute.
+   * @returns 2 * the lowest index in the aAcceptLangs that matches + 1
+   * if only the prefix matches, -2 if there's no systemLanguage attribute,
+   * or -1 if no indices match.
+   * XXX This algorithm is O(M*N).
+   */
+  int32_t GetBestLanguagePreferenceRank(const nsSubstring& aAcceptLangs) const;
+
+  /**
+   * Special value to pass to PassesConditionalProcessingTests to ignore systemLanguage
+   * attributes
+   */
+  static const nsString * const kIgnoreSystemLanguage;
+
+  /**
+   * Check whether the conditional processing attributes requiredFeatures,
+   * requiredExtensions and systemLanguage all "return true" if they apply to
+   * and are specified on the given element. Returns true if this element
+   * should be rendered, false if it should not.
+   *
+   * @param aAcceptLangs Optional parameter to pass in the value of the
+   *   intl.accept_languages preference if the caller has it cached.
+   *   Alternatively, pass in kIgnoreSystemLanguage to skip the systemLanguage
+   *   check if the caller is giving that special treatment.
+   */
+  bool PassesConditionalProcessingTests(
+         const nsString *aAcceptLangs = nullptr) const;
+
+  /**
+   * Returns true if the attribute is one of the conditional processing
+   * attributes.
+   */
+  bool IsConditionalProcessingAttribute(const nsIAtom* aAttribute) const;
+
+  bool ParseConditionalProcessingAttribute(
+         nsIAtom* aAttribute,
+         const nsAString& aValue,
+         nsAttrValue& aResult);
+
+  /**
+   * Unsets a conditional processing attribute.
+   */
+  void UnsetAttr(const nsIAtom* aAttribute);
+
+  nsIAtom* GetAttrName(uint8_t aAttrEnum) const;
+  void GetAttrValue(uint8_t aAttrEnum, nsAttrValue &aValue) const;
+
+  void MaybeInvalidate();
+
+  // WebIDL
+  already_AddRefed<DOMSVGStringList> RequiredFeatures();
+  already_AddRefed<DOMSVGStringList> RequiredExtensions();
+  already_AddRefed<DOMSVGStringList> SystemLanguage();
+  bool HasExtension(const nsAString& aExtension);
+
+  virtual bool IsInChromeDoc() const = 0;
+
+protected:
+  virtual ~SVGTests() {}
+
+private:
+  enum { FEATURES, EXTENSIONS, LANGUAGE };
+  SVGStringList mStringListAttributes[3];
+  static nsIAtom** sStringListNames[3];
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(SVGTests, MOZILLA_DOMSVGTESTS_IID)
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_SVGTests_h