[209346] Provide Fileshare example

https://bugs.eclipse.org/bugs/show_bug.cgi?id=209346

3 files changed, 166 insertions, 2 deletions

diff --git a/plugins/org.eclipse.net4j.buddies.ui/src/org/eclipse/net4j/buddies/internal/ui/dnd/BuddiesTransfer.java b/plugins/org.eclipse.net4j.buddies.ui/src/org/eclipse/net4j/buddies/internal/ui/dnd/BuddiesTransfer.java
new file mode 100644
index 0000000000..7b62c32396
--- /dev/null
+++ b/plugins/org.eclipse.net4j.buddies.ui/src/org/eclipse/net4j/buddies/internal/ui/dnd/BuddiesTransfer.java
@@ -0,0 +1,77 @@
+/***************************************************************************
+ * Copyright (c) 2004 - 2007 Eike Stepper, Germany.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Contributors:
+ *    Eike Stepper - initial API and implementation
+ **************************************************************************/
+package org.eclipse.net4j.buddies.internal.ui.dnd;
+
+import org.eclipse.net4j.buddies.IBuddySession;
+import org.eclipse.net4j.buddies.internal.ui.SessionManager;
+import org.eclipse.net4j.buddies.internal.ui.bundle.OM;
+import org.eclipse.net4j.buddies.protocol.IBuddy;
+import org.eclipse.net4j.util.io.ExtendedDataInputStream;
+import org.eclipse.net4j.util.io.ExtendedDataOutputStream;
+import org.eclipse.net4j.util.ui.dnd.DNDTransfer;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @author Eike Stepper
+ */
+public class BuddiesTransfer extends DNDTransfer<IBuddy[]>
+{
+  public static final String TYPE_NAME = "buddies-transfer-format";
+
+  public static final BuddiesTransfer INSTANCE = new BuddiesTransfer();
+
+  public BuddiesTransfer()
+  {
+    super(TYPE_NAME);
+  }
+
+  @Override
+  protected void writeObject(ExtendedDataOutputStream out, IBuddy[] buddies) throws IOException
+  {
+    out.writeInt(buddies.length);
+    for (IBuddy buddy : buddies)
+    {
+      out.writeString(buddy.getUserID());
+    }
+  }
+
+  @Override
+  protected IBuddy[] readObject(ExtendedDataInputStream in) throws IOException
+  {
+    IBuddySession session = SessionManager.INSTANCE.getSession();
+    if (session == null)
+    {
+      OM.LOG.warn("Buddy session is not available");
+      return null;
+    }
+
+    List<IBuddy> buddies = new ArrayList<IBuddy>();
+    int size = in.readInt();
+    for (int i = 0; i < size; i++)
+    {
+      String userID = in.readString();
+      IBuddy buddy = session.getBuddy(userID);
+      if (buddy != null)
+      {
+        buddies.add(buddy);
+      }
+      else
+      {
+        OM.LOG.warn("Buddy is not available: " + userID);
+      }
+    }
+
+    return buddies.toArray(new IBuddy[buddies.size()]);
+  }
+}
diff --git a/plugins/org.eclipse.net4j.buddies.ui/src/org/eclipse/net4j/buddies/internal/ui/views/BuddiesDragListener.java b/plugins/org.eclipse.net4j.buddies.ui/src/org/eclipse/net4j/buddies/internal/ui/views/BuddiesDragListener.java
new file mode 100644
index 0000000000..b96fbfdc6e
--- /dev/null
+++ b/plugins/org.eclipse.net4j.buddies.ui/src/org/eclipse/net4j/buddies/internal/ui/views/BuddiesDragListener.java
@@ -0,0 +1,84 @@
+/***************************************************************************
+ * Copyright (c) 2004 - 2007 Eike Stepper, Germany.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Contributors:
+ *    Eike Stepper - initial API and implementation
+ **************************************************************************/
+package org.eclipse.net4j.buddies.internal.ui.views;
+
+import org.eclipse.net4j.buddies.internal.ui.dnd.BuddiesTransfer;
+import org.eclipse.net4j.buddies.protocol.IBuddy;
+
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.jface.viewers.StructuredViewer;
+import org.eclipse.swt.dnd.DragSourceAdapter;
+import org.eclipse.swt.dnd.DragSourceEvent;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * @author Eike Stepper
+ */
+public class BuddiesDragListener extends DragSourceAdapter
+{
+  private StructuredViewer viewer;
+
+  public BuddiesDragListener(StructuredViewer viewer)
+  {
+    this.viewer = viewer;
+  }
+
+  @Override
+  public void dragSetData(DragSourceEvent event)
+  {
+    if (BuddiesTransfer.INSTANCE.isSupportedType(event.dataType))
+    {
+      event.data = getBuddies();
+    }
+  }
+
+  @Override
+  public void dragStart(DragSourceEvent event)
+  {
+    event.doit = !viewer.getSelection().isEmpty();
+  }
+
+  protected IBuddy[] getBuddies()
+  {
+    IStructuredSelection selection = (IStructuredSelection)viewer.getSelection();
+    List<IBuddy> buddies = new ArrayList<IBuddy>();
+    for (Iterator<Object> it = selection.iterator(); it.hasNext();)
+    {
+      Object element = it.next();
+      if (element instanceof IBuddy)
+      {
+        IBuddy buddy = (IBuddy)element;
+        buddies.add(buddy);
+      }
+    }
+  
+    return buddies.toArray(new IBuddy[buddies.size()]);
+  }
+
+  // @Override
+  // public void dragFinished(DragSourceEvent event)
+  // {
+  // if (!event.doit) return;
+  // // if the gadget was moved, remove it from the source viewer
+  // if (event.detail == DND.DROP_MOVE)
+  // {
+  // IStructuredSelection selection = (IStructuredSelection)viewer.getSelection();
+  // for (Iterator it = selection.iterator(); it.hasNext();)
+  // {
+  // ((Gadget)it.next()).setParent(null);
+  // }
+  // viewer.refresh();
+  // }
+  // }
+}
\ No newline at end of file
diff --git a/plugins/org.eclipse.net4j.buddies.ui/src/org/eclipse/net4j/buddies/internal/ui/views/BuddiesView.java b/plugins/org.eclipse.net4j.buddies.ui/src/org/eclipse/net4j/buddies/internal/ui/views/BuddiesView.java
index 62bf9e3832..d7d144750e 100644
--- a/plugins/org.eclipse.net4j.buddies.ui/src/org/eclipse/net4j/buddies/internal/ui/views/BuddiesView.java
+++ b/plugins/org.eclipse.net4j.buddies.ui/src/org/eclipse/net4j/buddies/internal/ui/views/BuddiesView.java
@@ -11,11 +11,14 @@
 package org.eclipse.net4j.buddies.internal.ui.views;
 
 import org.eclipse.net4j.buddies.IBuddyCollaboration;
+import org.eclipse.net4j.buddies.internal.ui.dnd.BuddiesTransfer;
 import org.eclipse.net4j.buddies.protocol.IBuddy;
 import org.eclipse.net4j.buddies.protocol.ICollaboration;
 import org.eclipse.net4j.util.container.ContainerUtil;
 import org.eclipse.net4j.util.container.IContainer;
 
+import org.eclipse.swt.dnd.DND;
+import org.eclipse.swt.dnd.Transfer;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 
@@ -35,8 +38,8 @@ public class BuddiesView extends SessionManagerView
   protected Control createControl(Composite parent)
   {
     Control control = super.createControl(parent);
-    // Transfer[] transfers = new Transfer[] { GadgetTransfer.getInstance() };
-    // getViewer().addDragSupport(DND.DROP_LINK, transfers, new GadgetDragListener(viewer));
+    Transfer[] transfers = new Transfer[] { BuddiesTransfer.INSTANCE };
+    getViewer().addDragSupport(DND.DROP_LINK, transfers, new BuddiesDragListener(getViewer()));
 
     return control;
   }