2006-07-17 Lillian Angel <langel@redhat.com>

        * examples/gnu/classpath/examples/awt/Demo.java
        (Demo): Added new window for DnD demo.
        (DragDropWindow): New class.
        * gnu/java/awt/dnd/peer/gtk/GtkDragSourceContextPeer.java:
        Added new fields and declarations for native functions.
        (GtkDragSourceContextPeer): Implemented.
        (getComponentPeer): New function.
        (startDrag): Partially implemented.
        (getCursor): Implemented.
        (setCursor): Implemented.
        * include/GtkDragSourceContextPeer.h: New file.
        * include/Makefile.am: Added new header file.
        * java/awt/Component.java
        (addNotify): Added call to the dropTarget's addNotify.
        * java/awt/dnd/DragSource.java
        (startDrag): Fixed code to use shared instances of peer and
        context.
        (getDragThreshold): Added stub.
        * java/awt/dnd/DropTarget.java
        (DropTarget): Implemented fully.
        (addNotify): Added code to get the peer of the parent that is
        not lightweight.
        * java/awt/dnd/DropTargetDragEvent.java
        (getTransferable): Added stub.
        * native/jni/gtk-peer/GtkDragSourceContextPeer.c: New file.
        * native/jni/gtk-peer/Makefile.am: Added new c file.
        * gnu/java/awt/dnd/peer/gtk/GtkDropTargetContextPeer.java:
        Changed to extend GtkGenericPeer.
        (GtkDropTargetContextPeer): New constructor.
        * gnu/java/awt/dnd/peer/gtk/GtkDropTargetPeer.java:
        Changed to extend GtkGenericPeer.
        (GtkDropTargetContextPeer): New constructor.

1 files changed, 199 insertions, 3 deletions

diff --git a/examples/gnu/classpath/examples/awt/Demo.java b/examples/gnu/classpath/examples/awt/Demo.java
index 5e668dde6..1ca09ff23 100644
--- a/examples/gnu/classpath/examples/awt/Demo.java
+++ b/examples/gnu/classpath/examples/awt/Demo.java
@@ -20,11 +20,70 @@ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 
 package gnu.classpath.examples.awt;
 
-import java.awt.*;
+import java.awt.BorderLayout;
+import java.awt.Button;
+import java.awt.Canvas;
+import java.awt.Checkbox;
+import java.awt.CheckboxGroup;
+import java.awt.CheckboxMenuItem;
+import java.awt.Choice;
+import java.awt.Color;
+import java.awt.Cursor;
+import java.awt.Dialog;
+import java.awt.Dimension;
+import java.awt.DisplayMode;
+import java.awt.FileDialog;
+import java.awt.FlowLayout;
+import java.awt.Font;
+import java.awt.Frame;
+import java.awt.Graphics;
+import java.awt.GraphicsDevice;
+import java.awt.GraphicsEnvironment;
+import java.awt.GridLayout;
+import java.awt.Image;
+import java.awt.Insets;
+import java.awt.Label;
 import java.awt.List;
-import java.awt.event.*;
+import java.awt.Menu;
+import java.awt.MenuBar;
+import java.awt.MenuItem;
+import java.awt.MenuShortcut;
+import java.awt.Panel;
+import java.awt.ScrollPane;
+import java.awt.TextField;
+import java.awt.Toolkit;
+import java.awt.Window;
+import java.awt.datatransfer.DataFlavor;
+import java.awt.datatransfer.StringSelection;
+import java.awt.datatransfer.Transferable;
+import java.awt.datatransfer.UnsupportedFlavorException;
+import java.awt.dnd.DnDConstants;
+import java.awt.dnd.DragGestureEvent;
+import java.awt.dnd.DragGestureListener;
+import java.awt.dnd.DragSource;
+import java.awt.dnd.DragSourceContext;
+import java.awt.dnd.DragSourceDragEvent;
+import java.awt.dnd.DragSourceDropEvent;
+import java.awt.dnd.DragSourceEvent;
+import java.awt.dnd.DragSourceListener;
+import java.awt.dnd.DropTarget;
+import java.awt.dnd.DropTargetDragEvent;
+import java.awt.dnd.DropTargetDropEvent;
+import java.awt.dnd.DropTargetEvent;
+import java.awt.dnd.DropTargetListener;
+import java.awt.dnd.InvalidDnDOperationException;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.ItemEvent;
+import java.awt.event.ItemListener;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
 import java.net.URL;
-import java.util.*;
+import java.util.Enumeration;
+import java.util.Hashtable;
+import java.util.Vector;
 
 class Demo
 {
@@ -156,6 +215,7 @@ class Demo
       addSubWindow ("Animation", new AnimationWindow ());
       addSubWindow ("Resolution", new ResolutionWindow ());
       addSubWindow ("Fullscreen", new FullscreenWindow ());
+      addSubWindow ("Drag n' Drop", new DragDropWindow ());
 
       Panel sp = new Panel();
       PrettyPanel p = new PrettyPanel();
@@ -799,6 +859,142 @@ class Demo
     }
   }
 
+  static class DragDropWindow
+      extends SubFrame
+      implements ActionListener, DropTargetListener
+  {
+    DragLabel source = new DragLabel(
+                                     "Drag and drop me to the following JButton",
+                                     Label.CENTER);
+
+    Button target = new Button();
+
+    public void init()
+    {
+      source.setForeground(Color.red);
+      add(source, BorderLayout.NORTH);
+
+      target.addActionListener(this);
+      add(target, BorderLayout.SOUTH);
+
+      new DropTarget(target, DnDConstants.ACTION_COPY_OR_MOVE, this);
+
+      setSize(205, 100);
+
+      pack();
+    }
+
+    public void actionPerformed(ActionEvent e)
+    {
+      Button b = (Button) e.getSource();
+      b.setLabel("");
+    }
+
+    public void dragEnter(DropTargetDragEvent e)
+    {
+    }
+
+    public void dragExit(DropTargetEvent e)
+    {
+    }
+
+    public void dragOver(DropTargetDragEvent e)
+    {
+    }
+
+    public void drop(DropTargetDropEvent e)
+    {
+      try
+        {
+          Transferable t = e.getTransferable();
+
+          if (e.isDataFlavorSupported(DataFlavor.stringFlavor))
+            {
+              e.acceptDrop(e.getDropAction());
+
+              String s;
+              s = (String) t.getTransferData(DataFlavor.stringFlavor);
+
+              target.setLabel(s);
+
+              e.dropComplete(true);
+            }
+          else
+            e.rejectDrop();
+        }
+      catch (java.io.IOException e2)
+        {
+        }
+      catch (UnsupportedFlavorException e2)
+        {
+        }
+    }
+
+    public void dropActionChanged(DropTargetDragEvent e)
+    {
+    }
+
+    class DragLabel
+        extends Label
+        implements DragGestureListener, DragSourceListener
+    {
+      private DragSource ds = DragSource.getDefaultDragSource();
+
+      public DragLabel(String s, int alignment)
+      {
+        super(s, alignment);
+        int action = DnDConstants.ACTION_COPY_OR_MOVE;
+        ds.createDefaultDragGestureRecognizer(this, action, this);
+      }
+
+      public void dragGestureRecognized(DragGestureEvent e)
+      {
+        try
+          {
+            Transferable t = new StringSelection(getText());
+            e.startDrag(DragSource.DefaultCopyNoDrop, t, this);
+          }
+        catch (InvalidDnDOperationException e2)
+          {
+            System.out.println(e2);
+          }
+      }
+
+      public void dragDropEnd(DragSourceDropEvent e)
+      {
+        if (e.getDropSuccess() == false)
+          return;
+
+        int action = e.getDropAction();
+        if ((action & DnDConstants.ACTION_MOVE) != 0)
+          setText("");
+      }
+
+      public void dragEnter(DragSourceDragEvent e)
+      {
+        DragSourceContext ctx = e.getDragSourceContext();
+
+        int action = e.getDropAction();
+        if ((action & DnDConstants.ACTION_COPY) != 0)
+          ctx.setCursor(DragSource.DefaultCopyDrop);
+        else
+          ctx.setCursor(DragSource.DefaultCopyNoDrop);
+      }
+
+      public void dragExit(DragSourceEvent e)
+      {
+      }
+
+      public void dragOver(DragSourceDragEvent e)
+      {
+      }
+
+      public void dropActionChanged(DragSourceDragEvent e)
+      {
+      }
+    }
+  }
+  
   static class FullscreenWindow extends SubFrame
   {
     GraphicsDevice gd = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice();