Index: platform/web/trunk/wysiwyg/src/main/java/com/xpn/xwiki/wysiwyg/client/ui/widget/GenericTray.java
===================================================================
--- platform/web/trunk/wysiwyg/src/main/java/com/xpn/xwiki/wysiwyg/client/ui/widget/GenericTray.java	(revision 0)
+++ platform/web/trunk/wysiwyg/src/main/java/com/xpn/xwiki/wysiwyg/client/ui/widget/GenericTray.java	(revision 0)
@@ -0,0 +1,162 @@
+/*
+ * See the NOTICE file distributed with this work for additional
+ * information regarding copyright ownership.
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this software; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+package com.xpn.xwiki.wysiwyg.client.ui.widget;
+
+import com.google.gwt.user.client.ui.ClickListener;
+import com.google.gwt.user.client.ui.ClickListenerCollection;
+import com.google.gwt.user.client.ui.Composite;
+import com.google.gwt.user.client.ui.HTML;
+import com.google.gwt.user.client.ui.HasHorizontalAlignment;
+import com.google.gwt.user.client.ui.HasVerticalAlignment;
+import com.google.gwt.user.client.ui.HorizontalPanel;
+import com.google.gwt.user.client.ui.PushButton;
+import com.google.gwt.user.client.ui.SourcesClickEvents;
+import com.google.gwt.user.client.ui.UIObject;
+import com.google.gwt.user.client.ui.VerticalPanel;
+import com.google.gwt.user.client.ui.Widget;
+import com.xpn.xwiki.wysiwyg.client.ui.Images;
+
+public class GenericTray extends Composite implements ClickListener, SourcesClickEvents
+{
+    private final ClickListenerCollection clickListeners = new ClickListenerCollection();
+
+    private final VerticalPanel mainPanel;
+
+    private final HorizontalPanel topPanel;
+
+    private final HTML title;
+
+    private Widget buttons;
+
+    private final PushButton closeButton;
+
+    private Widget content;
+
+    public GenericTray()
+    {
+        title = new HTML();
+        title.addStyleName("title");
+
+        closeButton = new PushButton(Images.INSTANCE.close().createImage());
+        closeButton.setTitle("Close");
+        closeButton.setStyleName("closeButton");
+
+        topPanel = new HorizontalPanel();
+        topPanel.add(title);
+        topPanel.add(closeButton);
+        topPanel.setCellVerticalAlignment(title, HasVerticalAlignment.ALIGN_MIDDLE);
+        topPanel.setCellHorizontalAlignment(title, HasHorizontalAlignment.ALIGN_CENTER);
+        topPanel.setCellHorizontalAlignment(closeButton, HasHorizontalAlignment.ALIGN_RIGHT);
+        topPanel.addStyleName("topPanel");
+
+        mainPanel = new VerticalPanel();
+        mainPanel.add(topPanel);
+
+        initWidget(mainPanel);
+        addStyleName("genericTray");
+    }
+
+    /**
+     * {@inheritDoc}
+     * 
+     * @see UIObject#setTitle(String)
+     */
+    public void setTitle(String title)
+    {
+        this.title.setText(title);
+    }
+
+    /**
+     * {@inheritDoc}
+     * 
+     * @see UIObject#getTitle()
+     */
+    public String getTitle()
+    {
+        return title.getText();
+    }
+
+    public void setButtons(Widget widget)
+    {
+        if (buttons != null) {
+            topPanel.remove(buttons);
+        }
+        if (widget != null) {
+            topPanel.insert(widget, 1);
+        }
+        buttons = widget;
+        topPanel.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_LEFT);
+    }
+
+    public void setContent(Widget widget)
+    {
+        if (content != null) {
+            mainPanel.remove(content);
+        }
+        if (widget != null) {
+            mainPanel.add(widget);
+        }
+        content = widget;
+        mainPanel.setCellHorizontalAlignment(content, HasHorizontalAlignment.ALIGN_CENTER);
+    }
+
+    public void show()
+    {
+        // TODO implement this method
+    }
+
+    public void close()
+    {
+        // TODO implement this method
+    }
+
+    /**
+     * {@inheritDoc}
+     * 
+     * @see SourcesClickEvents#addClickListener(com.google.gwt.user.client.ui.ClickListener)
+     */
+    public void addClickListener(ClickListener listener)
+    {
+        clickListeners.add(listener);
+    }
+
+    /**
+     * {@inheritDoc}
+     * 
+     * @see SourcesClickEvents#removeClickListener(ClickListener)
+     */
+    public void removeClickListener(ClickListener listener)
+    {
+        clickListeners.remove(listener);
+    }
+
+    /**
+     * {@inheritDoc}
+     * 
+     * @see ClickListener#onClick(Widget)
+     */
+    public void onClick(Widget sender)
+    {
+        if (sender == closeButton) {
+            clickListeners.fireClick(this);
+            close();            
+        }
+    }
+}