new listener/sender for selection events

diff --git a/src/jalview/structure/SelectionListener.java b/src/jalview/structure/SelectionListener.java
new file mode 100644 (file)
index 0000000..737c25f
--- /dev/null
+++ b/src/jalview/structure/SelectionListener.java
@@ -0,0 +1,18 @@
+/**\r
+ * \r
+ */\r
+package jalview.structure;\r
+\r
+\r
+/**\r
+ * Implemented by objects listening for selection events on SelectionSources \r
+ */\r
+public interface SelectionListener\r
+{\r
+  /**\r
+   * method called by the event broadcaster (see jalview.structure.StructureSelectionManager) to pass on a selection event to listeners\r
+   * @param selection\r
+   * @param source\r
+   */\r
+  public void selection(jalview.datamodel.SequenceGroup seqsel, jalview.datamodel.ColumnSelection colsel, SelectionSource source);\r
+}\r

diff --git a/src/jalview/structure/SelectionSource.java b/src/jalview/structure/SelectionSource.java
new file mode 100644 (file)
index 0000000..985f99c
--- /dev/null
+++ b/src/jalview/structure/SelectionSource.java
@@ -0,0 +1,11 @@
+package jalview.structure;\r
+\r
+/**\r
+ * an object that can generate selection events\r
+ * \r
+ *\r
+ */\r
+public interface SelectionSource\r
+{\r
+\r
+}\r

diff --git a/src/jalview/structure/StructureSelectionManager.java b/src/jalview/structure/StructureSelectionManager.java
index 2f3a312..5a2ac70 100644 (file)
--- a/src/jalview/structure/StructureSelectionManager.java
+++ b/src/jalview/structure/StructureSelectionManager.java
@@ -586,4 +586,34 @@ public class StructureSelectionManager
   {
     modifySeqMappingList(true, codonFrames);
   }
+
+  Vector sel_listeners = new Vector();
+  public void addSelectionListener(SelectionListener selecter)
+  {
+    if (!sel_listeners.contains(selecter))
+    {
+      sel_listeners.addElement(selecter);
+    }
+  }
+  public void removeSelectionListener(SelectionListener toremove)
+  {
+    if (sel_listeners.contains(toremove))
+    {
+      sel_listeners.remove(toremove);
+    }
+  }
+  public synchronized void sendSelection(jalview.datamodel.SequenceGroup selection, jalview.datamodel.ColumnSelection colsel, SelectionSource source)
+  {
+    if (sel_listeners!=null && sel_listeners.size()>0)
+    {
+      Enumeration listeners = sel_listeners.elements();
+      while (listeners.hasMoreElements())
+      {
+        SelectionListener slis = ((SelectionListener) listeners.nextElement());
+        if (slis!=source) { 
+          slis.selection(selection, colsel, source); 
+        };
+      }
+    }
+  }
 }