author tbirdbld
Tue, 03 May 2016 08:47:32 -0400
changeset 261036 4a108e94d3e2ad432d6b3c146dc82eeab4ae0af1
parent 259646 a20c7910a82fa2df2f3398c1108d102bac9128b0
permissions -rw-r--r--
Automated checkin: version bump for thunderbird 38.8.0 release. DONTBUILD CLOSED TREE a=release

/* -*- 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 */

 * internal interface representing CSS style rules that contain other
 * rules, such as @media rules

#ifndef mozilla_css_GroupRule_h__
#define mozilla_css_GroupRule_h__

#include "mozilla/Attributes.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/css/Rule.h"
#include "nsCOMArray.h"
#include "nsAutoPtr.h"
#include "nsCycleCollectionParticipant.h"

class nsPresContext;
class nsMediaQueryResultCacheKey;

namespace mozilla {

class CSSStyleSheet;

namespace css {

class GroupRuleRuleList;

// inherits from Rule so it can be shared between
// MediaRule and DocumentRule
class GroupRule : public Rule
  GroupRule(uint32_t aLineNumber, uint32_t aColumnNumber);
  GroupRule(const GroupRule& aCopy);
  virtual ~GroupRule();


  // implement part of nsIStyleRule and Rule
  virtual void SetStyleSheet(CSSStyleSheet* aSheet) override;

  // to help implement nsIStyleRule
#ifdef DEBUG
  virtual void List(FILE* out = stdout, int32_t aIndent = 0) const override;

  void AppendStyleRule(Rule* aRule);

  int32_t StyleRuleCount() const { return mRules.Count(); }
  Rule* GetStyleRuleAt(int32_t aIndex) const;

  typedef nsCOMArray<Rule>::nsCOMArrayEnumFunc RuleEnumFunc;
  bool EnumerateRulesForwards(RuleEnumFunc aFunc, void * aData) const;

   * The next three methods should never be called unless you have first
   * called WillDirty() on the parent stylesheet.  After they are
   * called, DidDirty() needs to be called on the sheet.
  nsresult DeleteStyleRuleAt(uint32_t aIndex);
  nsresult InsertStyleRuleAt(uint32_t aIndex, Rule* aRule);
  nsresult ReplaceStyleRule(Rule *aOld, Rule *aNew);

  virtual bool UseForPresentation(nsPresContext* aPresContext,
                                    nsMediaQueryResultCacheKey& aKey) = 0;

  // non-virtual -- it is only called by subclasses
  size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
  virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const override = 0;

  static bool
  CloneRuleInto(Rule* aRule, void* aArray)
    nsRefPtr<Rule> clone = aRule->Clone();
    return true;

  // to help implement nsIDOMCSSRule
  void AppendRulesToCssText(nsAString& aCssText);

  // to implement common methods on nsIDOMCSSMediaRule and
  // nsIDOMCSSMozDocumentRule
  nsresult GetCssRules(nsIDOMCSSRuleList* *aRuleList);
  nsresult InsertRule(const nsAString & aRule, uint32_t aIndex,
                      uint32_t* _retval);
  nsresult DeleteRule(uint32_t aIndex);

  nsCOMArray<Rule> mRules;
  nsRefPtr<GroupRuleRuleList> mRuleCollection; // lazily constructed

} // namespace css
} // namespace mozilla

#endif /* mozilla_css_GroupRule_h__ */