libcore/swf/ScriptLimitsTag.h

   1 //
   2 //   Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
   3 //
   4 // This program is free software; you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation; either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with this program; if not, write to the Free Software
  16 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17
  18 #ifndef GNASH_SWF_SCRIPTLIMITSTAG_H
  19 #define GNASH_SWF_SCRIPTLIMITSTAG_H
  20
  21 #include "SWF.h" // for TagType definition
  22 #include "SWFStream.h" // for inlines
  23 #include "movie_root.h"
  24 #include "movie_definition.h"
  25 #include "ControlTag.h"
  26
  27 namespace gnash {
  28 namespace SWF {
  29
  30 /// \brief Sets the desired limits for recursion and timeout for AS scripts
  31 //
  32 /// A loaded movie containing a ScriptLimits tag should change the *global*
  33 /// scriptlimits setting, so this is kept in movie_root rather than the
  34 /// immutable movie_definition.
  35 class ScriptLimitsTag : public ControlTag
  36 {
  37 public:
  38
  39     virtual ~ScriptLimitsTag() {}
  40
  41     virtual void executeState(MovieClip* m, DisplayList& /*dl*/) const {
  42
  43         log_debug("Setting script limits: recursion %s, timeout %s",
  44                 _recursionLimit, _timeoutLimit);
  45         getRoot(*getObject(m)).setScriptLimits(_recursionLimit, _timeoutLimit);
  46     }
  47
  48     static void loader(SWFStream& in, TagType tag, movie_definition& m,
  49             const RunResources& /*r*/)
  50     {
  51         assert(tag = SWF::SCRIPTLIMITS);
  52         boost::intrusive_ptr<ControlTag> s(new ScriptLimitsTag(in));
  53         m.addControlTag(s);
  54     }
  55
  56 private:
  57
  58     ScriptLimitsTag(SWFStream& in)
  59         :
  60         _recursionLimit(0),
  61         _timeoutLimit(0)
  62     {
  63         in.ensureBytes(4);
  64         _recursionLimit = in.read_u16();
  65         _timeoutLimit = in.read_u16();
  66
  67         IF_VERBOSE_PARSE (
  68             log_parse(_("  ScriptLimits tag: recursion: %d, timeout: %d"),
  69                     _recursionLimit, _timeoutLimit);
  70             );
  71
  72     }
  73
  74     boost::uint16_t _recursionLimit;
  75     boost::uint16_t _timeoutLimit;
  76 };
  77
  78 } // namespace gnash::SWF
  79 } // namespace gnash
  80
  81
  82 #endif // GNASH_SWF_SCRIPTLIMITSTAG_H
  83
  84
  85 // Local Variables:
  86 // mode: C++
  87 // indent-tabs-mode: t
  88 // End: