git.gag.com Git - debian/openrocket/blob - core/src/net/sf/openrocket/gui/main/UndoRedoAction.java

   1 package net.sf.openrocket.gui.main;\r
   2 \r
   3 import java.awt.event.ActionEvent;\r
   4 \r
   5 import javax.swing.AbstractAction;\r
   6 \r
   7 import net.sf.openrocket.document.OpenRocketDocument;\r
   8 import net.sf.openrocket.document.UndoRedoListener;\r
   9 import net.sf.openrocket.gui.util.Icons;\r
  10 import net.sf.openrocket.l10n.Translator;\r
  11 import net.sf.openrocket.logging.LogHelper;\r
  12 import net.sf.openrocket.startup.Application;\r
  13 import net.sf.openrocket.util.BugException;\r
  14 \r
  15 /**\r
  16  * Inner class to implement undo/redo actions.\r
  17  */\r
  18 public class UndoRedoAction extends AbstractAction implements UndoRedoListener {\r
  19         \r
  20         // Use Factory mechanism because we want to register the new instance as an\r
  21         // UndoRedoListener.\r
  22         public static UndoRedoAction newUndoAction( OpenRocketDocument document ) {\r
  23                 UndoRedoAction undo = new UndoRedoAction( UNDO, document );\r
  24                 document.addUndoRedoListener(undo);\r
  25                 return undo;\r
  26         }\r
  27 \r
  28         public static UndoRedoAction newRedoAction( OpenRocketDocument document ) {\r
  29                 UndoRedoAction redo = new UndoRedoAction( REDO, document );\r
  30                 document.addUndoRedoListener(redo);\r
  31                 return redo;\r
  32         }\r
  33 \r
  34         private static final LogHelper log = Application.getLogger();\r
  35         private static final Translator trans = Application.getTranslator();\r
  36 \r
  37         private static final int UNDO = 1;\r
  38         private static final int REDO = 2;\r
  39         \r
  40         private final int type;\r
  41         \r
  42         private final OpenRocketDocument document;\r
  43         \r
  44         // Sole constructor\r
  45         private UndoRedoAction(int type, OpenRocketDocument document) {\r
  46                 this.document = document;\r
  47                 if (type != UNDO && type != REDO) {\r
  48                         throw new IllegalArgumentException("Unknown type = " + type);\r
  49                 }\r
  50                 this.type = type;\r
  51                 setAllValues();\r
  52         }\r
  53         \r
  54         \r
  55         // Actual action to make\r
  56         @Override\r
  57         public void actionPerformed(ActionEvent e) {\r
  58                 switch (type) {\r
  59                 case UNDO:\r
  60                         log.user("Performing undo, event=" + e);\r
  61                         document.undo();\r
  62                         break;\r
  63                 \r
  64                 case REDO:\r
  65                         log.user("Performing redo, event=" + e);\r
  66                         document.redo();\r
  67                         break;\r
  68                 }\r
  69         }\r
  70         \r
  71         \r
  72         // Set all the values correctly (name and enabled/disabled status)\r
  73         public void setAllValues() {\r
  74                 String name, desc;\r
  75                 boolean actionEnabled;\r
  76                 \r
  77                 switch (type) {\r
  78                 case UNDO:\r
  79                         //// Undo\r
  80                         name = trans.get("OpenRocketDocument.Undo");\r
  81                         desc = document.getUndoDescription();\r
  82                         actionEnabled = document.isUndoAvailable();\r
  83                         this.putValue(SMALL_ICON, Icons.EDIT_UNDO);\r
  84                         break;\r
  85                 \r
  86                 case REDO:\r
  87                         ////Redo\r
  88                         name = trans.get("OpenRocketDocument.Redo");\r
  89                         desc = document.getRedoDescription();\r
  90                         actionEnabled = document.isRedoAvailable();\r
  91                         this.putValue(SMALL_ICON, Icons.EDIT_REDO);\r
  92                         break;\r
  93                 \r
  94                 default:\r
  95                         throw new BugException("illegal type=" + type);\r
  96                 }\r
  97                 \r
  98                 if (desc != null)\r
  99                         name = name + " (" + desc + ")";\r
 100                 \r
 101                 putValue(NAME, name);\r
 102                 setEnabled(actionEnabled);\r
 103         }\r
 104 }\r