dom/xbl/nsXBLProtoImplMember.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef nsXBLProtoImplMember_h__
   7 #define nsXBLProtoImplMember_h__
   8
   9 #include "nsIAtom.h"
  10 #include "nsString.h"
  11 #include "nsString.h"
  12 #include "nsIServiceManager.h"
  13 #include "nsContentUtils.h" // For NS_CONTENT_DELETE_LIST_MEMBER.
  14 #include "nsCycleCollectionParticipant.h"
  15
  16 class nsIContent;
  17 class nsIObjectOutputStream;
  18
  19 struct nsXBLTextWithLineNumber
  20 {
  21   char16_t* mText;
  22   uint32_t mLineNumber;
  23
  24   nsXBLTextWithLineNumber() :
  25     mText(nullptr),
  26     mLineNumber(0)
  27   {
  28     MOZ_COUNT_CTOR(nsXBLTextWithLineNumber);
  29   }
  30
  31   ~nsXBLTextWithLineNumber() {
  32     MOZ_COUNT_DTOR(nsXBLTextWithLineNumber);
  33     if (mText) {
  34       nsMemory::Free(mText);
  35     }
  36   }
  37
  38   void AppendText(const nsAString& aText) {
  39     if (mText) {
  40       char16_t* temp = mText;
  41       mText = ToNewUnicode(nsDependentString(temp) + aText);
  42       nsMemory::Free(temp);
  43     } else {
  44       mText = ToNewUnicode(aText);
  45     }
  46   }
  47
  48   char16_t* GetText() {
  49     return mText;
  50   }
  51
  52   void SetLineNumber(uint32_t aLineNumber) {
  53     mLineNumber = aLineNumber;
  54   }
  55
  56   uint32_t GetLineNumber() {
  57     return mLineNumber;
  58   }
  59 };
  60
  61 class nsXBLProtoImplMember
  62 {
  63 public:
  64   explicit nsXBLProtoImplMember(const char16_t* aName)
  65     : mNext(nullptr)
  66     , mExposeToUntrustedContent(false)
  67   {
  68     mName = ToNewUnicode(nsDependentString(aName));
  69   }
  70   virtual ~nsXBLProtoImplMember() {
  71     nsMemory::Free(mName);
  72     NS_CONTENT_DELETE_LIST_MEMBER(nsXBLProtoImplMember, this, mNext);
  73   }
  74
  75   nsXBLProtoImplMember* GetNext() { return mNext; }
  76   void SetNext(nsXBLProtoImplMember* aNext) { mNext = aNext; }
  77   bool ShouldExposeToUntrustedContent() { return mExposeToUntrustedContent; }
  78   void SetExposeToUntrustedContent(bool aExpose) { mExposeToUntrustedContent = aExpose; }
  79   const char16_t* GetName() { return mName; }
  80
  81   virtual nsresult InstallMember(JSContext* aCx,
  82                                  JS::Handle<JSObject*> aTargetClassObject) = 0;
  83   virtual nsresult CompileMember(mozilla::dom::AutoJSAPI& jsapi, const nsCString& aClassStr,
  84                                  JS::Handle<JSObject*> aClassObject) = 0;
  85
  86   virtual void Trace(const TraceCallbacks& aCallbacks, void *aClosure) = 0;
  87
  88   virtual nsresult Write(nsIObjectOutputStream* aStream)
  89   {
  90     return NS_OK;
  91   }
  92
  93 protected:
  94   nsXBLProtoImplMember* mNext;  // The members of an implementation are chained.
  95   char16_t* mName;               // The name of the field, method, or property.
  96
  97   bool mExposeToUntrustedContent; // If this binding is installed on an element
  98                                   // in an untrusted scope, should this
  99                                   // implementation member be accessible to the
 100                                   // content?
 101 };
 102
 103 #endif // nsXBLProtoImplMember_h__