chromecast/shell/android/apk/src/org/chromium/chromecast/shell/CastShellActivity.java - platform/external/chromium_org - Git at Google

 // Copyright 2014 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.chromecast.shell;

 import android.app.Activity;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.media.AudioManager;
 import android.net.Uri;
 import android.os.Bundle;
 import android.support.v4.content.LocalBroadcastManager;
 import android.util.Log;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.WindowManager;
 import android.widget.Toast;

 import org.chromium.base.CommandLine;
 import org.chromium.content.browser.ActivityContentVideoViewClient;
 import org.chromium.content.browser.ContentVideoViewClient;
 import org.chromium.content.browser.ContentViewClient;
 import org.chromium.content.browser.ContentViewCore;
 import org.chromium.ui.base.WindowAndroid;

 /**
  * Activity for managing the Cast shell.
  */
 public class CastShellActivity extends Activity {
     private static final String TAG = "CastShellActivity";

     private static final String ACTIVE_SHELL_URL_KEY = "activeUrl";
     private static final int DEFAULT_HEIGHT_PIXELS = 720;
     public static final String ACTION_EXTRA_RESOLUTION_HEIGHT =
         "org.chromium.chromecast.shell.intent.extra.RESOLUTION_HEIGHT";

     private CastWindowManager mCastWindowManager;
     private AudioManager mAudioManager;
     private BroadcastReceiver mBroadcastReceiver;

     // Native window instance.
     // TODO(byungchul, gunsch): CastShellActivity, CastWindowAndroid, and native CastWindowAndroid
     // have a one-to-one relationship. Consider instantiating CastWindow here and CastWindow having
     // this native shell instance.
     private long mNativeCastWindow;

     /**
      * Returns whether or not CastShellActivity should launch the browser startup sequence.
      * Intended to be overridden.
      */
     protected boolean shouldLaunchBrowser() {
         return true;
     }

     @Override
     protected void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         exitIfUrlMissing();

         if (shouldLaunchBrowser()) {
             if (!CastBrowserHelper.initializeBrowser(getApplicationContext())) {
                 Toast.makeText(this,
                         R.string.browser_process_initialization_failed,
                         Toast.LENGTH_SHORT).show();
                 finish();
             }
         }

         // Whenever our app is visible, volume controls should modify the music stream.
         // For more information read:
         // http://developer.android.com/training/managing-audio/volume-playback.html
         setVolumeControlStream(AudioManager.STREAM_MUSIC);

         // Set flags to both exit sleep mode when this activity starts and
         // avoid entering sleep mode while playing media. We cannot distinguish
         // between video and audio so this applies to both.
         getWindow().addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
         getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

         mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

         setContentView(R.layout.cast_shell_activity);
         mCastWindowManager = (CastWindowManager) findViewById(R.id.shell_container);
         mCastWindowManager.setDelegate(new CastWindowManager.Delegate() {
                 @Override
                 public void onCreated() {
                 }

                 @Override
                 public void onClosed() {
                     mNativeCastWindow = 0;
                     mCastWindowManager.setDelegate(null);
                     finish();
                 }
             });
         setResolution();
         mCastWindowManager.setWindow(new WindowAndroid(this));

         registerBroadcastReceiver();

         String url = getIntent().getDataString();
         Log.d(TAG, "onCreate startupUrl: " + url);
         mNativeCastWindow = mCastWindowManager.launchCastWindow(url);

         getActiveContentViewCore().setContentViewClient(new ContentViewClient() {
             @Override
             public ContentVideoViewClient getContentVideoViewClient() {
                 return new ActivityContentVideoViewClient(CastShellActivity.this);
             }
         });
     }

     @Override
     protected void onDestroy() {
         super.onDestroy();

         unregisterBroadcastReceiver();

         if (mNativeCastWindow != 0) {
             mCastWindowManager.stopCastWindow(mNativeCastWindow, false /* gracefully */);
             mNativeCastWindow = 0;
         }
     }

     @Override
     protected void onNewIntent(Intent intent) {
         // Only handle direct intents (e.g. "fling") if this activity is also managing
         // the browser process.
         if (!shouldLaunchBrowser()) return;

         String url = intent.getDataString();
         Log.d(TAG, "onNewIntent: " + url);

         // Reset broadcast intent uri and receiver.
         setIntent(intent);
         exitIfUrlMissing();
         getActiveCastWindow().loadUrl(url);
     }

     @Override
     protected void onResume() {
         super.onResume();

         // Inform ContentView that this activity is being shown.
         ContentViewCore view = getActiveContentViewCore();
         if (view != null) view.onShow();

         // Request audio focus so any other audio playback doesn't continue in the background.
         if (mAudioManager.requestAudioFocus(
                 null, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN)
                 != AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
             Log.e(TAG, "Failed to obtain audio focus");
         }
     }

     @Override
     protected void onPause() {
         // As soon as the cast app is no longer in the foreground, we ought to immediately tear
         // everything down. Apps should not continue running and playing sound in the background.
         super.onPause();

         // Release the audio focus. Note that releasing audio focus does not stop audio playback,
         // it just notifies the framework that this activity has stopped playing audio.
         if (mAudioManager.abandonAudioFocus(null) != AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
             Log.e(TAG, "Failed to abandon audio focus");
         }

         ContentViewCore view = getActiveContentViewCore();
         if (view != null) view.onHide();

         finishGracefully();
     }

     protected void finishGracefully() {
         if (mNativeCastWindow != 0) {
             mCastWindowManager.stopCastWindow(mNativeCastWindow, true /* gracefully */);
             mNativeCastWindow = 0;
         }
     }

     private void registerBroadcastReceiver() {
         if (mBroadcastReceiver == null) {
             mBroadcastReceiver = new BroadcastReceiver() {
                 @Override
                 public void onReceive(Context context, Intent intent) {
                     Log.d(TAG, "Received intent: action=" + intent.getAction());
                     if (CastWindowAndroid.ACTION_ENABLE_DEV_TOOLS.equals(intent.getAction())) {
                         mCastWindowManager.nativeEnableDevTools(true);
                     } else if (CastWindowAndroid.ACTION_DISABLE_DEV_TOOLS.equals(
                             intent.getAction())) {
                         mCastWindowManager.nativeEnableDevTools(false);
                     }
                 }
             };
         }

         IntentFilter devtoolsBroadcastIntentFilter = new IntentFilter();
         devtoolsBroadcastIntentFilter.addAction(CastWindowAndroid.ACTION_ENABLE_DEV_TOOLS);
         devtoolsBroadcastIntentFilter.addAction(CastWindowAndroid.ACTION_DISABLE_DEV_TOOLS);
         LocalBroadcastManager.getInstance(this)
                 .registerReceiver(mBroadcastReceiver, devtoolsBroadcastIntentFilter);
     }

     private void unregisterBroadcastReceiver() {
         LocalBroadcastManager broadcastManager = LocalBroadcastManager.getInstance(this);
         broadcastManager.unregisterReceiver(mBroadcastReceiver);
     }

     private void setResolution() {
         int requestedHeight = getIntent().getIntExtra(
                 ACTION_EXTRA_RESOLUTION_HEIGHT, DEFAULT_HEIGHT_PIXELS);
         int displayHeight = getResources().getDisplayMetrics().heightPixels;
         // Clamp within [DEFAULT_HEIGHT_PIXELS, displayHeight]
         int desiredHeight =
                 Math.min(displayHeight, Math.max(DEFAULT_HEIGHT_PIXELS, requestedHeight));
         double deviceScaleFactor = ((double) displayHeight) / desiredHeight;
         Log.d(TAG, "Using scale factor " + deviceScaleFactor + " to set height " + desiredHeight);
         CommandLine.getInstance().appendSwitchWithValue("force-device-scale-factor",
                 String.valueOf(deviceScaleFactor));
     }

     private void exitIfUrlMissing() {
         Intent intent = getIntent();
         if (intent != null && intent.getData() != null && !intent.getData().equals(Uri.EMPTY)) {
             return;
         }
         // Log an exception so that the exit cause is obvious when reading the logs.
         Log.e(TAG, "Activity will not start",
             new IllegalArgumentException("Intent did not contain a valid url"));
         System.exit(-1);
     }

     /**
      * @return The currently visible {@link CastWindowAndroid} or null if one is not showing.
      */
     public CastWindowAndroid getActiveCastWindow() {
         return mCastWindowManager.getActiveCastWindow();
     }

     /**
      * @return The {@link ContentViewCore} owned by the currently visible {@link CastWindowAndroid},
      *         or null if one is not showing.
      */
     public ContentViewCore getActiveContentViewCore() {
         CastWindowAndroid shell = getActiveCastWindow();
         return shell != null ? shell.getContentViewCore() : null;
     }

     @Override
     public boolean onKeyUp(int keyCode, KeyEvent event) {
         if (keyCode != KeyEvent.KEYCODE_BACK) {
             return super.onKeyUp(keyCode, event);
         }

         // Just finish this activity to go back to the previous activity or launcher.
         finishGracefully();
         return true;
     }

     @Override
     public boolean dispatchKeyEvent(KeyEvent event) {
         int keyCode = event.getKeyCode();
         if (keyCode == KeyEvent.KEYCODE_BACK) {
             return super.dispatchKeyEvent(event);
         }
         return false;
     }

     @Override
     public boolean dispatchGenericMotionEvent(MotionEvent ev) {
         return false;
     }

     @Override
     public boolean dispatchKeyShortcutEvent(KeyEvent event) {
         return false;
     }

     @Override
     public boolean dispatchTouchEvent(MotionEvent ev) {
         return false;
     }

     @Override
     public boolean dispatchTrackballEvent(MotionEvent ev) {
         return false;
     }
 }
	// Copyright 2014 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.chromecast.shell;

	import android.app.Activity;
	import android.content.BroadcastReceiver;
	import android.content.Context;
	import android.content.Intent;
	import android.content.IntentFilter;
	import android.media.AudioManager;
	import android.net.Uri;
	import android.os.Bundle;
	import android.support.v4.content.LocalBroadcastManager;
	import android.util.Log;
	import android.view.KeyEvent;
	import android.view.MotionEvent;
	import android.view.WindowManager;
	import android.widget.Toast;

	import org.chromium.base.CommandLine;
	import org.chromium.content.browser.ActivityContentVideoViewClient;
	import org.chromium.content.browser.ContentVideoViewClient;
	import org.chromium.content.browser.ContentViewClient;
	import org.chromium.content.browser.ContentViewCore;
	import org.chromium.ui.base.WindowAndroid;

	/**
	* Activity for managing the Cast shell.
	*/
	public class CastShellActivity extends Activity {
	private static final String TAG = "CastShellActivity";

	private static final String ACTIVE_SHELL_URL_KEY = "activeUrl";
	private static final int DEFAULT_HEIGHT_PIXELS = 720;
	public static final String ACTION_EXTRA_RESOLUTION_HEIGHT =
	"org.chromium.chromecast.shell.intent.extra.RESOLUTION_HEIGHT";

	private CastWindowManager mCastWindowManager;
	private AudioManager mAudioManager;
	private BroadcastReceiver mBroadcastReceiver;

	// Native window instance.
	// TODO(byungchul, gunsch): CastShellActivity, CastWindowAndroid, and native CastWindowAndroid
	// have a one-to-one relationship. Consider instantiating CastWindow here and CastWindow having
	// this native shell instance.
	private long mNativeCastWindow;

	/**
	* Returns whether or not CastShellActivity should launch the browser startup sequence.
	* Intended to be overridden.
	*/
	protected boolean shouldLaunchBrowser() {
	return true;
	}

	@Override
	protected void onCreate(final Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	exitIfUrlMissing();

	if (shouldLaunchBrowser()) {
	if (!CastBrowserHelper.initializeBrowser(getApplicationContext())) {
	Toast.makeText(this,
	R.string.browser_process_initialization_failed,
	Toast.LENGTH_SHORT).show();
	finish();
	}
	}

	// Whenever our app is visible, volume controls should modify the music stream.
	// For more information read:
	// http://developer.android.com/training/managing-audio/volume-playback.html
	setVolumeControlStream(AudioManager.STREAM_MUSIC);

	// Set flags to both exit sleep mode when this activity starts and
	// avoid entering sleep mode while playing media. We cannot distinguish
	// between video and audio so this applies to both.
	getWindow().addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
	getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

	mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

	setContentView(R.layout.cast_shell_activity);
	mCastWindowManager = (CastWindowManager) findViewById(R.id.shell_container);
	mCastWindowManager.setDelegate(new CastWindowManager.Delegate() {
	@Override
	public void onCreated() {
	}

	@Override
	public void onClosed() {
	mNativeCastWindow = 0;
	mCastWindowManager.setDelegate(null);
	finish();
	}
	});
	setResolution();
	mCastWindowManager.setWindow(new WindowAndroid(this));

	registerBroadcastReceiver();

	String url = getIntent().getDataString();
	Log.d(TAG, "onCreate startupUrl: " + url);
	mNativeCastWindow = mCastWindowManager.launchCastWindow(url);

	getActiveContentViewCore().setContentViewClient(new ContentViewClient() {
	@Override
	public ContentVideoViewClient getContentVideoViewClient() {
	return new ActivityContentVideoViewClient(CastShellActivity.this);
	}
	});
	}

	@Override
	protected void onDestroy() {
	super.onDestroy();

	unregisterBroadcastReceiver();

	if (mNativeCastWindow != 0) {
	mCastWindowManager.stopCastWindow(mNativeCastWindow, false /* gracefully */);
	mNativeCastWindow = 0;
	}
	}

	@Override
	protected void onNewIntent(Intent intent) {
	// Only handle direct intents (e.g. "fling") if this activity is also managing
	// the browser process.
	if (!shouldLaunchBrowser()) return;

	String url = intent.getDataString();
	Log.d(TAG, "onNewIntent: " + url);

	// Reset broadcast intent uri and receiver.
	setIntent(intent);
	exitIfUrlMissing();
	getActiveCastWindow().loadUrl(url);
	}

	@Override
	protected void onResume() {
	super.onResume();

	// Inform ContentView that this activity is being shown.
	ContentViewCore view = getActiveContentViewCore();
	if (view != null) view.onShow();

	// Request audio focus so any other audio playback doesn't continue in the background.
	if (mAudioManager.requestAudioFocus(
	null, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN)
	!= AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
	Log.e(TAG, "Failed to obtain audio focus");
	}
	}

	@Override
	protected void onPause() {
	// As soon as the cast app is no longer in the foreground, we ought to immediately tear
	// everything down. Apps should not continue running and playing sound in the background.
	super.onPause();

	// Release the audio focus. Note that releasing audio focus does not stop audio playback,
	// it just notifies the framework that this activity has stopped playing audio.
	if (mAudioManager.abandonAudioFocus(null) != AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
	Log.e(TAG, "Failed to abandon audio focus");
	}

	ContentViewCore view = getActiveContentViewCore();
	if (view != null) view.onHide();

	finishGracefully();
	}

	protected void finishGracefully() {
	if (mNativeCastWindow != 0) {
	mCastWindowManager.stopCastWindow(mNativeCastWindow, true /* gracefully */);
	mNativeCastWindow = 0;
	}
	}

	private void registerBroadcastReceiver() {
	if (mBroadcastReceiver == null) {
	mBroadcastReceiver = new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
	Log.d(TAG, "Received intent: action=" + intent.getAction());
	if (CastWindowAndroid.ACTION_ENABLE_DEV_TOOLS.equals(intent.getAction())) {
	mCastWindowManager.nativeEnableDevTools(true);
	} else if (CastWindowAndroid.ACTION_DISABLE_DEV_TOOLS.equals(
	intent.getAction())) {
	mCastWindowManager.nativeEnableDevTools(false);
	}
	}
	};
	}

	IntentFilter devtoolsBroadcastIntentFilter = new IntentFilter();
	devtoolsBroadcastIntentFilter.addAction(CastWindowAndroid.ACTION_ENABLE_DEV_TOOLS);
	devtoolsBroadcastIntentFilter.addAction(CastWindowAndroid.ACTION_DISABLE_DEV_TOOLS);
	LocalBroadcastManager.getInstance(this)
	.registerReceiver(mBroadcastReceiver, devtoolsBroadcastIntentFilter);
	}

	private void unregisterBroadcastReceiver() {
	LocalBroadcastManager broadcastManager = LocalBroadcastManager.getInstance(this);
	broadcastManager.unregisterReceiver(mBroadcastReceiver);
	}

	private void setResolution() {
	int requestedHeight = getIntent().getIntExtra(
	ACTION_EXTRA_RESOLUTION_HEIGHT, DEFAULT_HEIGHT_PIXELS);
	int displayHeight = getResources().getDisplayMetrics().heightPixels;
	// Clamp within [DEFAULT_HEIGHT_PIXELS, displayHeight]
	int desiredHeight =
	Math.min(displayHeight, Math.max(DEFAULT_HEIGHT_PIXELS, requestedHeight));
	double deviceScaleFactor = ((double) displayHeight) / desiredHeight;
	Log.d(TAG, "Using scale factor " + deviceScaleFactor + " to set height " + desiredHeight);
	CommandLine.getInstance().appendSwitchWithValue("force-device-scale-factor",
	String.valueOf(deviceScaleFactor));
	}

	private void exitIfUrlMissing() {
	Intent intent = getIntent();
	if (intent != null && intent.getData() != null && !intent.getData().equals(Uri.EMPTY)) {
	return;
	}
	// Log an exception so that the exit cause is obvious when reading the logs.
	Log.e(TAG, "Activity will not start",
	new IllegalArgumentException("Intent did not contain a valid url"));
	System.exit(-1);
	}

	/**
	* @return The currently visible {@link CastWindowAndroid} or null if one is not showing.
	*/
	public CastWindowAndroid getActiveCastWindow() {
	return mCastWindowManager.getActiveCastWindow();
	}

	/**
	* @return The {@link ContentViewCore} owned by the currently visible {@link CastWindowAndroid},
	* or null if one is not showing.
	*/
	public ContentViewCore getActiveContentViewCore() {
	CastWindowAndroid shell = getActiveCastWindow();
	return shell != null ? shell.getContentViewCore() : null;
	}

	@Override
	public boolean onKeyUp(int keyCode, KeyEvent event) {
	if (keyCode != KeyEvent.KEYCODE_BACK) {
	return super.onKeyUp(keyCode, event);
	}

	// Just finish this activity to go back to the previous activity or launcher.
	finishGracefully();
	return true;
	}

	@Override
	public boolean dispatchKeyEvent(KeyEvent event) {
	int keyCode = event.getKeyCode();
	if (keyCode == KeyEvent.KEYCODE_BACK) {
	return super.dispatchKeyEvent(event);
	}
	return false;
	}

	@Override
	public boolean dispatchGenericMotionEvent(MotionEvent ev) {
	return false;
	}

	@Override
	public boolean dispatchKeyShortcutEvent(KeyEvent event) {
	return false;
	}

	@Override
	public boolean dispatchTouchEvent(MotionEvent ev) {
	return false;
	}

	@Override
	public boolean dispatchTrackballEvent(MotionEvent ev) {
	return false;
	}
	}