Changeset 1808 in josm for trunk/src/org/openstreetmap/josm/actions/SelectAllAction.java

Timestamp:

2009-07-19T10:31:27+02:00 (15 years ago)

Author:

Gubaer

Message:

improved enabling/disabling of menu entries and action buttons depending on current state of JOSM (number of open layers, type of active layer, etc.)

File:

• trunk/src/org/openstreetmap/josm/actions/SelectAllAction.java (modified) (1 diff)

trunk/src/org/openstreetmap/josm/actions/SelectAllAction.java

@@ -8 +8 @@
 
 import org.openstreetmap.josm.Main;
+import org.openstreetmap.josm.gui.layer.Layer;
+import org.openstreetmap.josm.gui.layer.Layer.LayerChangeListener;
 import org.openstreetmap.josm.tools.Shortcut;
 
-public class SelectAllAction extends JosmAction {
+public class SelectAllAction extends JosmAction implements LayerChangeListener{
 
     public SelectAllAction() {
         super(tr("Select All"),"selectall", tr("Select all undeleted objects in the data layer. This selects incomplete objects too."),
-        Shortcut.registerShortcut("system:selectall", tr("Edit: {0}", tr("Select All")), KeyEvent.VK_A, Shortcut.GROUP_MENU), true);
+                Shortcut.registerShortcut("system:selectall", tr("Edit: {0}", tr("Select All")), KeyEvent.VK_A, Shortcut.GROUP_MENU), true);
+        Layer.listeners.add(this);
+        refreshEnabled();
     }
 
     public void actionPerformed(ActionEvent e) {
+        if (!isEnabled())
+            return;
         Main.ds.setSelected(Main.ds.allNonDeletedCompletePrimitives());
     }
+
+    /**
+     * Refreshes the enabled state
+     * 
+     */
+    protected void refreshEnabled() {
+        setEnabled(Main.map != null
+                && Main.map.mapView !=null
+                && Main.map.mapView.getEditLayer() != null
+        );
+    }
+
+    /* ---------------------------------------------------------------------------------- */
+    /* Interface LayerChangeListener                                                      */
+    /* ---------------------------------------------------------------------------------- */
+    public void activeLayerChange(Layer oldLayer, Layer newLayer) {
+        refreshEnabled();
+    }
+
+    public void layerAdded(Layer newLayer) {
+        refreshEnabled();
+    }
+
+    public void layerRemoved(Layer oldLayer) {
+        refreshEnabled();
+    }
 }