Expose the PopupPanel hide command used by GlobalKey

This way applications can setup a binding on the same key that is used
to open the dialog to close it, making that key a toggle key.  By using
the same command class, the help for the dialog will show the various
different methods of closing the dialog aliased under a single entry.

Signed-off-by: Shawn O. Pearce <sop@google.com>

src/main/java/com/google/gwtexpui/globalkey/client/GlobalKey.java

diff --git a/src/main/java/com/google/gwtexpui/globalkey/client/GlobalKey.java b/src/main/java/com/google/gwtexpui/globalkey/client/GlobalKey.java
index 16c2970..a50f205 100644
--- a/src/main/java/com/google/gwtexpui/globalkey/client/GlobalKey.java
+++ b/src/main/java/com/google/gwtexpui/globalkey/client/GlobalKey.java
@@ -86,13 +86,7 @@
     assert panel.isShowing();
     assert active == global;
     active = new State(panel);
-    active.add(new KeyCommand(0, KeyCodes.KEY_ESCAPE, Util.C
-        .closeCurrentDialog()) {
-      @Override
-      public void onKeyPress(final KeyPressEvent event) {
-        panel.hide();
-      }
-    });
+    active.add(new HidePopupPanelCommand(0, KeyCodes.KEY_ESCAPE, panel));
     panel.addCloseHandler(restoreGlobal);
   }
 

src/main/java/com/google/gwtexpui/globalkey/client/HidePopupPanelCommand.java

diff --git a/src/main/java/com/google/gwtexpui/globalkey/client/HidePopupPanelCommand.java b/src/main/java/com/google/gwtexpui/globalkey/client/HidePopupPanelCommand.java
new file mode 100644
index 0000000..6d9c50e
--- /dev/null
+++ b/src/main/java/com/google/gwtexpui/globalkey/client/HidePopupPanelCommand.java
@@ -0,0 +1,33 @@
+// Copyright (C) 2009 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 com.google.gwtexpui.globalkey.client;
+
+import com.google.gwt.event.dom.client.KeyPressEvent;
+import com.google.gwt.user.client.ui.PopupPanel;
+
+/** Hides the given popup panel when invoked. */
+public class HidePopupPanelCommand extends KeyCommand {
+  private final PopupPanel panel;
+
+  public HidePopupPanelCommand(int mask, int key, PopupPanel panel) {
+    super(mask, key, Util.C.closeCurrentDialog());
+    this.panel = panel;
+  }
+
+  @Override
+  public void onKeyPress(final KeyPressEvent event) {
+    panel.hide();
+  }
+}