| /* |
| * Copyright (c) 1996, 1999, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #ifndef CMDIDLIST_H |
| #define CMDIDLIST_H |
| |
| #include "awt.h" |
| #include "awt_Object.h" |
| |
| // Mapping from command ids to objects. |
| class AwtCmdIDList { |
| public: |
| AwtCmdIDList(); |
| ~AwtCmdIDList(); |
| |
| UINT Add(AwtObject* obj); |
| AwtObject* Lookup(UINT id); |
| void Remove(UINT id); |
| |
| CriticalSection m_lock; |
| |
| private: |
| |
| // next_free_index is used to build a list of free ids. Since the |
| // array index is less then 32k, we can't confuse in-use entry |
| // (pointer) with an index of the next free entry. NIL is -1. |
| union CmdIDEntry { |
| int next_free_index; // index of the next entry in the free list |
| AwtObject *obj; // object that is assigned this id |
| }; |
| |
| CmdIDEntry *m_array; // the vector's contents |
| |
| int m_first_free; // head of the free list, may be -1 (nil) |
| UINT m_capacity; // size of currently allocated m_array |
| |
| void BuildFreeList(UINT first_index); |
| }; |
| |
| |
| #endif // CMDIDLIST_H |