ipc/ipcd/shared/src/ipcIDList.h

   1 /* ***** BEGIN LICENSE BLOCK *****
   2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   3  *
   4  * The contents of this file are subject to the Mozilla Public License Version
   5  * 1.1 (the "License"); you may not use this file except in compliance with
   6  * the License. You may obtain a copy of the License at
   7  * http://www.mozilla.org/MPL/
   8  *
   9  * Software distributed under the License is distributed on an "AS IS" basis,
  10  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  11  * for the specific language governing rights and limitations under the
  12  * License.
  13  *
  14  * The Original Code is Mozilla IPC.
  15  *
  16  * The Initial Developer of the Original Code is
  17  * Netscape Communications Corporation.
  18  * Portions created by the Initial Developer are Copyright (C) 2002
  19  * the Initial Developer. All Rights Reserved.
  20  *
  21  * Contributor(s):
  22  *   Darin Fisher <darin@netscape.com>
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
  26  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27  * in which case the provisions of the GPL or the LGPL are applicable instead
  28  * of those above. If you wish to allow use of your version of this file only
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  30  * use your version of this file under the terms of the MPL, indicate your
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  33  * the provisions above, a recipient may use your version of this file under
  34  * the terms of any one of the MPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37
  38 #ifndef ipcIDList_h__
  39 #define ipcIDList_h__
  40
  41 #include "nsID.h"
  42 #include "ipcList.h"
  43
  44 //-----------------------------------------------------------------------------
  45 // nsID node
  46 //-----------------------------------------------------------------------------
  47
  48 class ipcIDNode
  49 {
  50 public:
  51     ipcIDNode(const nsID &id)
  52         : mID(id)
  53         { }
  54
  55     const nsID &Value() const { return mID; }
  56
  57     PRBool Equals(const nsID &id) const { return mID.Equals(id); }
  58
  59     class ipcIDNode *mNext;
  60 private:
  61     nsID mID;
  62 };
  63
  64 //-----------------------------------------------------------------------------
  65 // singly-linked list of nsIDs
  66 //-----------------------------------------------------------------------------
  67
  68 class ipcIDList : public ipcList<ipcIDNode>
  69 {
  70 public:
  71     typedef ipcList<ipcIDNode> Super;
  72
  73     void Prepend(const nsID &id)
  74     {
  75         Super::Prepend(new ipcIDNode(id));
  76     }
  77
  78     void Append(const nsID &id)
  79     {
  80         Super::Append(new ipcIDNode(id));
  81     }
  82
  83     const ipcIDNode *Find(const nsID &id) const
  84     {
  85         return FindNode(mHead, id);
  86     }
  87
  88     void FindAndDelete(const nsID &id)
  89     {
  90         ipcIDNode *node = FindNodeBefore(mHead, id);
  91         if (node)
  92             DeleteAfter(node);
  93         else
  94             DeleteFirst();
  95     }
  96
  97 private:
  98     static NS_HIDDEN_(ipcIDNode *) FindNode      (ipcIDNode *head, const nsID &id);
  99     static NS_HIDDEN_(ipcIDNode *) FindNodeBefore(ipcIDNode *head, const nsID &id);
 100 };
 101
 102 #endif // !ipcIDList_h__