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

   1 package net.sf.openrocket.gui.main;
   2
   3 import java.util.ArrayList;
   4 import java.util.List;
   5
   6 import net.sf.openrocket.document.Simulation;
   7 import net.sf.openrocket.rocketcomponent.RocketComponent;
   8
   9 public final class OpenRocketClipboard {
  10
  11         private static RocketComponent clipboardComponent = null;
  12         private static Simulation[] clipboardSimulations = null;
  13
  14         private static List<ClipboardListener> listeners = new ArrayList<ClipboardListener>();
  15
  16         private OpenRocketClipboard() {
  17                 // Disallow instantiation
  18         }
  19
  20
  21         /**
  22          * Return the <code>RocketComponent</code> contained in the clipboard, or
  23          * <code>null</code>.  The component is returned verbatim, and must be copied
  24          * before attaching to any rocket design!
  25          *
  26          * @return      the rocket component contained in the clipboard, or <code>null</code>
  27          *                      if the clipboard does not currently contain a rocket component.
  28          */
  29         public static RocketComponent getClipboardComponent() {
  30                 return clipboardComponent;
  31         }
  32
  33
  34         public static void setClipboard(RocketComponent component) {
  35                 clipboardComponent = component;
  36                 clipboardSimulations = null;
  37                 fireClipboardChanged();
  38         }
  39
  40
  41         public static Simulation[] getClipboardSimulations() {
  42                 if (clipboardSimulations == null || clipboardSimulations.length == 0)
  43                         return null;
  44                 return clipboardSimulations.clone();
  45         }
  46
  47         public static void setClipboard(Simulation[] simulations) {
  48                 clipboardSimulations = simulations.clone();
  49                 clipboardComponent = null;
  50                 fireClipboardChanged();
  51         }
  52
  53
  54
  55         public static void addClipboardListener(ClipboardListener listener) {
  56                 listeners.add(listener);
  57         }
  58
  59         public static void removeClipboardListener(ClipboardListener listener) {
  60                 listeners.remove(listener);
  61         }
  62
  63         private static void fireClipboardChanged() {
  64                 ClipboardListener[] array = listeners.toArray(new ClipboardListener[0]);
  65                 for (ClipboardListener l: array) {
  66                         l.clipboardChanged();
  67                 }
  68         }
  69
  70 }