libcore/CharacterProxy.cpp

   1 // CharacterProxy.cpp - rebindable DisplayObject reference, for Gnash
   2 //
   3 //   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
   4 //   Free Software Foundation, Inc
   5 //
   6 // This program is free software; you can redistribute it and/or modify
   7 // it under the terms of the GNU General Public License as published by
   8 // the Free Software Foundation; either version 3 of the License, or
   9 // (at your option) any later version.
  10 //
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License
  17 // along with this program; if not, write to the Free Software
  18 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19 //
  20
  21 #include "CharacterProxy.h"
  22 #include "utility.h"
  23 #include "DisplayObject.h"
  24 #include "VM.h"
  25 #include "movie_root.h"
  26
  27 #include <string>
  28
  29 namespace gnash {
  30
  31 void
  32 CharacterProxy::checkDangling() const
  33 {
  34         if (_ptr && _ptr->isDestroyed()) {
  35                 _tgt = _ptr->getOrigTarget();
  36 #ifdef GNASH_DEBUG_SOFT_REFERENCES
  37                 log_debug("char %s (%s) was destroyed, stored its orig target "
  38                             "(%s) for later rebinding", _ptr->getTarget(), typeName(*_ptr),
  39                 _tgt);
  40 #endif
  41                 _ptr = nullptr;
  42         }
  43 }
  44
  45 std::string
  46 CharacterProxy::getTarget() const
  47 {
  48     // set _ptr to NULL and _tgt to original target if destroyed
  49         checkDangling();
  50         if ( _ptr ) return _ptr->getTarget();
  51         return _tgt;
  52 }
  53
  54 void
  55 CharacterProxy::setReachable() const
  56 {
  57         checkDangling();
  58         if ( _ptr ) _ptr->setReachable();
  59 }
  60
  61 DisplayObject*
  62 findDisplayObjectByTarget(const std::string& tgtstr, movie_root& mr)
  63 {
  64         if (tgtstr.empty()) return nullptr;
  65         return mr.findCharacterByTarget(tgtstr);
  66 }
  67
  68 } // namespace gnash
  69