GWT plugin archetype: Open GWT dialog box from menu

Instead of adding a button that opens a GWT dialog box,
have a top menu from which the GWT dialog box is opened.

Change-Id: Ie62f04609958c4e1bdf4f30ada08f42579a42961
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>

gerrit-plugin-gwt-archetype/src/main/resources/archetype-resources/src/main/java/HelloMenu.java

@@ -0,0 +1,39 @@
+// Copyright (C) 2013 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package ${package};
+
+import com.google.gerrit.extensions.annotations.Listen;
+import com.google.gerrit.extensions.webui.TopMenu;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+@Listen
+public class HelloMenu implements TopMenu {
+  public final static String MENU_ID = "hello_open-dialog-box";
+  private final List<MenuEntry> menuEntries;
+
+  public HelloMenu() {
+    menuEntries = new ArrayList<TopMenu.MenuEntry>();
+    menuEntries.add(new MenuEntry("Hello", Collections
+        .singletonList(new MenuItem("Open Dialog Box", "", "", MENU_ID))));
+  }
+
+  @Override
+  public List<MenuEntry> getEntries() {
+    return menuEntries;
+  }
+}

gerrit-plugin-gwt-archetype/src/main/resources/archetype-resources/src/main/java/client/HelloPlugins.java

@@ -22,6 +22,8 @@ import com.google.gwt.user.client.ui.DialogBox;
 import com.google.gwt.user.client.ui.RootPanel;
 import com.google.gwt.user.client.ui.VerticalPanel;
 
+import ${package}.HelloMenu;
+
 /**
  * HelloWorld Plugins.
  */
@@ -29,15 +31,6 @@ public class HelloPlugins extends Plugin {
 
   @Override
   public void onModuleLoad() {
-    Button button = new Button("Click me");
-
-    VerticalPanel vPanel = new VerticalPanel();
-    vPanel.setWidth("100%");
-    vPanel.setHorizontalAlignment(VerticalPanel.ALIGN_CENTER);
-    vPanel.add(button);
-
-    RootPanel.get().add(vPanel);
-
     // Create the dialog box
     final DialogBox dialogBox = new DialogBox();
 
@@ -59,11 +52,14 @@ public class HelloPlugins extends Plugin {
     // Set the contents of the Widget
     dialogBox.setWidget(dialogVPanel);
 
-    button.addClickHandler(new ClickHandler() {
-      public void onClick(ClickEvent event) {
-        dialogBox.center();
-        dialogBox.show();
-      }
-    });
+    RootPanel rootPanel = RootPanel.get(HelloMenu.MENU_ID);
+    rootPanel.getElement().removeAttribute("href");
+    rootPanel.addDomHandler(new ClickHandler() {
+        @Override
+        public void onClick(ClickEvent event) {
+          dialogBox.center();
+          dialogBox.show();
+        }
+    }, ClickEvent.getType());
   }
 }

gerrit-plugin-gwt-archetype/src/main/resources/archetype-resources/src/main/java/public/hello.css

@@ -101,3 +101,6 @@ a, a:visited, a:hover {
   zoom: 1;
 }
 
+#hello_open-dialog-box {
+  cursor: pointer;
+}