synfig-studio/trunk/src/synfigapp/actions/valuenodedynamiclistremove.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file valuenodedynamiclistremove.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **  Copyright (c) 2008 Chris Moore
  10 **
  11 **      This package is free software; you can redistribute it and/or
  12 **      modify it under the terms of the GNU General Public License as
  13 **      published by the Free Software Foundation; either version 2 of
  14 **      the License, or (at your option) any later version.
  15 **
  16 **      This package is distributed in the hope that it will be useful,
  17 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19 **      General Public License for more details.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32
  33 #include "valuenodedynamiclistremove.h"
  34 #include <synfigapp/canvasinterface.h>
  35
  36 #include <synfigapp/general.h>
  37
  38 #endif
  39
  40 using namespace std;
  41 using namespace etl;
  42 using namespace synfig;
  43 using namespace synfigapp;
  44 using namespace Action;
  45
  46 /* === M A C R O S ========================================================= */
  47
  48 ACTION_INIT(Action::ValueNodeDynamicListRemove);
  49 ACTION_SET_NAME(Action::ValueNodeDynamicListRemove,"ValueNodeDynamicListRemove");
  50 ACTION_SET_LOCAL_NAME(Action::ValueNodeDynamicListRemove,N_("Remove Item"));
  51 ACTION_SET_TASK(Action::ValueNodeDynamicListRemove,"remove");
  52 ACTION_SET_CATEGORY(Action::ValueNodeDynamicListRemove,Action::CATEGORY_VALUEDESC|Action::CATEGORY_VALUENODE|Action::CATEGORY_HIDDEN);
  53 ACTION_SET_PRIORITY(Action::ValueNodeDynamicListRemove,-19);
  54 ACTION_SET_VERSION(Action::ValueNodeDynamicListRemove,"0.0");
  55 ACTION_SET_CVS_ID(Action::ValueNodeDynamicListRemove,"$Id$");
  56
  57 /* === G L O B A L S ======================================================= */
  58
  59 /* === P R O C E D U R E S ================================================= */
  60
  61 /* === M E T H O D S ======================================================= */
  62
  63 Action::ValueNodeDynamicListRemove::ValueNodeDynamicListRemove()
  64 {
  65         index=0;
  66         set_dirty(true);
  67 }
  68
  69 Action::ParamVocab
  70 Action::ValueNodeDynamicListRemove::get_param_vocab()
  71 {
  72         ParamVocab ret(Action::CanvasSpecific::get_param_vocab());
  73
  74         ret.push_back(ParamDesc("value_desc",Param::TYPE_VALUEDESC)
  75                 .set_local_name(_("ValueDesc"))
  76         );
  77
  78         return ret;
  79 }
  80
  81 bool
  82 Action::ValueNodeDynamicListRemove::is_candidate(const ParamList &x)
  83 {
  84         if (!candidate_check(get_param_vocab(),x))
  85                 return false;
  86
  87         ValueDesc value_desc(x.find("value_desc")->second.get_value_desc());
  88
  89         return (value_desc.parent_is_value_node() &&
  90                         // We need a dynamic list.
  91                         ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_parent_value_node()));
  92 }
  93
  94 bool
  95 Action::ValueNodeDynamicListRemove::set_param(const synfig::String& name, const Action::Param &param)
  96 {
  97         if(name=="value_desc" && param.get_type()==Param::TYPE_VALUEDESC)
  98         {
  99                 ValueDesc value_desc(param.get_value_desc());
 100
 101                 if(!value_desc.parent_is_value_node())
 102                         return false;
 103
 104                 value_node=ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_parent_value_node());
 105
 106                 if(!value_node)
 107                         return false;
 108
 109                 index=value_desc.get_index();
 110
 111                 return true;
 112         }
 113
 114         return Action::CanvasSpecific::set_param(name,param);
 115 }
 116
 117 bool
 118 Action::ValueNodeDynamicListRemove::is_ready()const
 119 {
 120         if(!value_node)
 121                 return false;
 122         return Action::CanvasSpecific::is_ready();
 123 }
 124
 125 void
 126 Action::ValueNodeDynamicListRemove::perform()
 127 {
 128         if(index>=value_node->link_count())
 129                 index=value_node->link_count()-1;
 130
 131         list_entry=value_node->list[index];
 132         value_node->erase((value_node->list.begin()+index)->value_node);
 133
 134         // Signal that a layer has been inserted
 135         value_node->changed();
 136 /*_if(get_canvas_interface())
 137         {
 138                 get_canvas_interface()->signal_value_node_changed()(value_node);
 139         }
 140         else synfig::warning("CanvasInterface not set on action");*/
 141 }
 142
 143 void
 144 Action::ValueNodeDynamicListRemove::undo()
 145 {
 146         value_node->add(list_entry,index);
 147
 148         // Signal that a layer has been inserted
 149         value_node->changed();
 150 /*_if(get_canvas_interface())
 151         {
 152                 get_canvas_interface()->signal_value_node_changed()(value_node);
 153         }
 154         else synfig::warning("CanvasInterface not set on action");*/
 155 }