Add Android Chromoting client keyboard input

remoting/android/java/src/org/chromium/chromoting/Desktop.java

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chromoting;
 
 import android.app.Activity;
 import android.content.res.Configuration;
 import android.os.Bundle;
+import android.util.Log;
+import android.view.KeyEvent;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.WindowManager;
+import android.view.inputmethod.InputMethodManager;
 
 import org.chromium.chromoting.jni.JniInterface;
 
 /**
  * A simple screen that does nothing except display a DesktopView and notify it of rotations.
  */
 public class Desktop extends Activity {
-    /** Whether the device has just been rotated. */
+    /** The surface that displays the remote host's desktop feed. */
     private DesktopView remoteHostDesktop;
 
     /** Called when the activity is first created. */
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         remoteHostDesktop = new DesktopView(this);
         setContentView(remoteHostDesktop);
     }
 
     /** Called when the activity is finally finished. */
     @Override
     public void onDestroy() {
         super.onDestroy();
         JniInterface.disconnectFromHost();
     }
 
     /** Called when the display is rotated (as registered in the manifest). */
     @Override
     public void onConfigurationChanged(Configuration newConfig) {
         super.onConfigurationChanged(newConfig);
-        remoteHostDesktop.requestCanvasRedraw();
+        remoteHostDesktop.requestRecheckConstrainingDimension();
+    }
+
+    /** Called to initialize the action bar. */
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.actionbar, menu);
+        return super.onCreateOptionsMenu(menu);
+    }
+
+    /** Called whenever an action bar button is pressed. */
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.actionbar_keyboard:
+                ((InputMethodManager)getSystemService(INPUT_METHOD_SERVICE)).toggleSoftInput(0, 0);
+                return true;
+            case R.id.actionbar_hide:
+                getActionBar().hide();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+
+    /** Called when a hardware key is pressed, and usually when a software key is pressed. */
+    @Override
+    public boolean dispatchKeyEvent(KeyEvent event) {
+        JniInterface.keyboardAction(event.getKeyCode(), event.getAction() == KeyEvent.ACTION_DOWN);
+
+        if (event.getKeyCode() == KeyEvent.KEYCODE_ENTER) {
+            // We stop this event from propagating further to prevent the keyboard from closing.
+            return true;
+        }
+
+        return super.dispatchKeyEvent(event);
     }
 }