1 files changed, 172 insertions, 19 deletions

diff --git a/libjava/classpath/java/awt/dnd/DragSourceContext.java b/libjava/classpath/java/awt/dnd/DragSourceContext.java
index 88607b090ea..1fee5c0c304 100644
--- a/libjava/classpath/java/awt/dnd/DragSourceContext.java
+++ b/libjava/classpath/java/awt/dnd/DragSourceContext.java
@@ -70,8 +70,8 @@ public class DragSourceContext
   private Transferable transferable;
   private DragGestureEvent trigger;
   private DragSourceListener dragSourceListener;
-  private boolean useCustomCursor; // FIXME: currently unused but needed for serialization.
-  private int sourceActions; // FIXME: currently unused but needed for serialization.
+  private boolean useCustomCursor;
+  private int sourceActions;
   private Image image;
   private Point offset;
   
@@ -82,16 +82,17 @@ public class DragSourceContext
    * are null, the drag action for the trigger event is DnDConstants.ACTION_NONE
    * or if the source actions for the DragGestureRecognizer associated with the
    * trigger event are equal to DnDConstants.ACTION_NONE.
-   * @exception NullPointerException If peer or trigger is null.
+   * @exception NullPointerException If peer, trans or trigger is null or if the
+   * image is not null but the offset is. 
    */
   public DragSourceContext (DragSourceContextPeer peer,
                             DragGestureEvent trigger, Cursor cursor,
                             Image image, Point offset, Transferable trans,
                             DragSourceListener dsl)
-    throws NotImplementedException
-  {
+  {    
     if (peer == null
-        || trigger == null)
+        || trigger == null || trans == null
+        || (image != null && offset == null))
       throw new NullPointerException ();
 
     if (trigger.getComponent () == null
@@ -108,37 +109,77 @@ public class DragSourceContext
     this.offset = offset;
     this.transferable = trans;
     this.dragSourceListener = dsl;
+    this.sourceActions = trigger.getSourceAsDragGestureRecognizer().getSourceActions();
     
-    throw new Error ("not implemented");
+    setCursor(cursor);
+    updateCurrentCursor(trigger.getDragAction(), sourceActions, DEFAULT);
   }
 
+  /**
+   * Returns the DragSource object associated with the
+   * DragGestureEvent.
+   * 
+   * @return the DragSource associated with the trigger.
+   */
   public DragSource getDragSource()
   {
     return trigger.getDragSource ();
   }
 
+  /**
+   * Returns the component associated with this.
+   * 
+   * @return the component associated with the trigger.
+   */
   public Component getComponent()
   {
     return trigger.getComponent ();
   }
 
+  /**
+   * Gets the trigger associated with this.
+   * 
+   * @return the trigger.
+   */
   public DragGestureEvent getTrigger()
   {
     return trigger;
   }
 
+  /**
+   * Returns the source actions for the DragGestureRecognizer.
+   * 
+   * @return the source actions for DragGestureRecognizer.
+   */
   public int getSourceActions()
   {
-    return trigger.getSourceAsDragGestureRecognizer ().getSourceActions ();
+    if (sourceActions == 0)
+      sourceActions = trigger.getSourceAsDragGestureRecognizer().getSourceActions();
+    return sourceActions;
   }
 
-  public void setCursor (Cursor cursor)
-    throws NotImplementedException
+  /**
+   * Sets the cursor for this drag operation to the specified cursor.
+   * 
+   * @param cursor c - the Cursor to use, or null to use the default drag
+   *          cursor.
+   */
+  public void setCursor(Cursor cursor)
   {
+    if (cursor == null)
+      useCustomCursor = false;
+    else
+      useCustomCursor = true;
     this.cursor = cursor;
-    // FIXME: Check if we need to do more here
+    peer.setCursor(cursor);
   }
 
+  /**
+   * Returns the current cursor or null if the default
+   * drag cursor is used.
+   * 
+   * @return the current cursor or null.
+   */
   public Cursor getCursor()
   {
     return cursor;
@@ -165,48 +206,160 @@ public class DragSourceContext
       dragSourceListener = null;
   }
 
+  /**
+   * This function tells the peer that the DataFlavors have been modified.
+   */
   public void transferablesFlavorsChanged()
-    throws NotImplementedException
   {
+    peer.transferablesFlavorsChanged();
   }
 
+  /**
+   * Calls dragEnter on the listeners registered with this
+   * and with the DragSource.
+   * 
+   * @param e - the DragSourceDragEvent
+   */
   public void dragEnter(DragSourceDragEvent e)
-    throws NotImplementedException
   {
+    if (dragSourceListener != null)
+      dragSourceListener.dragEnter(e);
+    
+    DragSource ds = getDragSource();
+    DragSourceListener[] dsl = ds.getDragSourceListeners();
+    for (int i = 0; i < dsl.length; i++)
+      dsl[i].dragEnter(e);
+    
+    updateCurrentCursor(e.getDropAction(), e.getTargetActions(), ENTER);
   }
 
+  /**
+   * Calls dragOver on the listeners registered with this
+   * and with the DragSource.
+   * 
+   * @param e - the DragSourceDragEvent
+   */
   public void dragOver(DragSourceDragEvent e)
-    throws NotImplementedException
   {
+    if (dragSourceListener != null)
+      dragSourceListener.dragOver(e);
+    
+    DragSource ds = getDragSource();
+    DragSourceListener[] dsl = ds.getDragSourceListeners();
+    for (int i = 0; i < dsl.length; i++)
+      dsl[i].dragOver(e);
+    
+    updateCurrentCursor(e.getDropAction(), e.getTargetActions(), OVER);
   }
-
+  
+  /**
+   * Calls dragExit on the listeners registered with this
+   * and with the DragSource.
+   * 
+   * @param e - the DragSourceEvent
+   */
   public void dragExit(DragSourceEvent e)
-    throws NotImplementedException
   {
+    if (dragSourceListener != null)
+      dragSourceListener.dragExit(e);
+    
+    DragSource ds = getDragSource();
+    DragSourceListener[] dsl = ds.getDragSourceListeners();
+    for (int i = 0; i < dsl.length; i++)
+      dsl[i].dragExit(e);
+    
+    updateCurrentCursor(0, 0, DEFAULT);
   }
 
+  /**
+   * Calls dropActionChanged on the listeners registered with this
+   * and with the DragSource.
+   * 
+   * @param e - the DragSourceDragEvent
+   */
   public void dropActionChanged(DragSourceDragEvent e)
-    throws NotImplementedException
   {
+    if (dragSourceListener != null)
+      dragSourceListener.dropActionChanged(e);
+    
+    DragSource ds = getDragSource();
+    DragSourceListener[] dsl = ds.getDragSourceListeners();
+    for (int i = 0; i < dsl.length; i++)
+      dsl[i].dropActionChanged(e);
+    
+    updateCurrentCursor(e.getDropAction(), e.getTargetActions(), CHANGED);
   }
 
+  /**
+   * Calls dragDropEnd on the listeners registered with this
+   * and with the DragSource.
+   * 
+   * @param e - the DragSourceDropEvent
+   */
   public void dragDropEnd(DragSourceDropEvent e)
-    throws NotImplementedException
   {
+    if (dragSourceListener != null)
+      dragSourceListener.dragDropEnd(e);
+    
+    DragSource ds = getDragSource();
+    DragSourceListener[] dsl = ds.getDragSourceListeners();
+    for (int i = 0; i < dsl.length; i++)
+      dsl[i].dragDropEnd(e);
   }
 
+  /**
+   * Calls dragMouseMoved on the listeners registered with the DragSource.
+   * 
+   * @param e - the DragSourceDragEvent
+   */
   public void dragMouseMoved(DragSourceDragEvent e)
-    throws NotImplementedException
   {
+    DragSource ds = getDragSource();
+    DragSourceMotionListener[] dsml = ds.getDragSourceMotionListeners();
+    for (int i = 0; i < dsml.length; i++)
+      dsml[i].dragMouseMoved(e);
   }
 
+  /**
+   * Returns the Transferable set with this object.
+   * 
+   * @return the transferable.
+   */
   public Transferable getTransferable()
   {
     return transferable;
   }
 
+  /**
+   * This function sets the drag cursor for the specified operation, actions and
+   * status if the default drag cursor is active. Otherwise, the cursor is not
+   * updated in any way.
+   * 
+   * @param dropOp - the current operation.
+   * @param targetAct - the supported actions.
+   * @param status - the status of the cursor (constant).
+   */
   protected void updateCurrentCursor(int dropOp, int targetAct, int status)
     throws NotImplementedException
   {
+    // FIXME: Not implemented fully
+    if (!useCustomCursor)
+      {
+        Cursor cursor = null;
+        switch (status)
+          {
+          case ENTER:
+            break;
+          case CHANGED:
+            break;
+          case OVER:
+            break;
+          default:
+            break;
+          }
+        
+        this.cursor = cursor;
+        peer.setCursor(cursor);
+      }
   }
 } // class DragSourceContext