/*
* 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 com.android.internal.app;
import com.android.internal.R;
import android.app.Dialog;
import android.app.MediaRouteActionProvider;
import android.app.MediaRouteButton;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.media.MediaRouter;
import android.media.MediaRouter.RouteGroup;
import android.media.MediaRouter.RouteInfo;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.SeekBar;
/**
* This class implements the route controller dialog for {@link MediaRouter}.
* <p>
* This dialog allows the user to control or disconnect from the currently selected route.
* </p>
*
* @see MediaRouteButton
* @see MediaRouteActionProvider
*
* TODO: Move this back into the API, as in the support library media router.
*/
public class MediaRouteControllerDialog extends Dialog {
// Time to wait before updating the volume when the user lets go of the seek bar
// to allow the route provider time to propagate the change and publish a new
// route descriptor.
private static final int VOLUME_UPDATE_DELAY_MILLIS = 250;
private final MediaRouter mRouter;
private final MediaRouterCallback mCallback;
private final MediaRouter.RouteInfo mRoute;
private boolean mCreated;
private Drawable mMediaRouteConnectingDrawable;
private Drawable mMediaRouteOnDrawable;
private Drawable mCurrentIconDrawable;
private boolean mVolumeControlEnabled = true;
private LinearLayout mVolumeLayout;
private SeekBar mVolumeSlider;
private boolean mVolumeSliderTouched;
private View mControlView;
private Button mDisconnectButton;
public MediaRouteControllerDialog(Context context, int theme) {
super(context, theme);
mRouter = (MediaRouter) context.getSystemService(Context.MEDIA_ROUTER_SERVICE);
mCallback = new MediaRouterCallback();
mRoute = mRouter.getSelectedRoute();
}
/**
* Gets the route that this dialog is controlling.
*/
public MediaRouter.RouteInfo getRoute() {
return mRoute;
}
/**
* Provides the subclass an opportunity to create a view that will
* be included within the body of the dialog to offer additional media controls
* for the currently playing content.
*
* @param savedInstanceState The dialog's saved instance state.
* @return The media control view, or null if none.
*/
public View onCreateMediaControlView(Bundle savedInstanceState) {
return null;
}
/**
* Gets the media control view that was created by {@link #onCreateMediaControlView(Bundle)}.
*
* @return The media control view, or null if none.
*/
public View getMediaControlView() {
return mControlView;
}
/**
* Sets whether to enable the volume slider and volume control using the volume keys
* when the route supports it.
* <p>
* The default value is true.
* </p>
*/
public void setVolumeControlEnabled(boolean enable) {
if (mVolumeControlEnabled != enable) {
mVolumeControlEnabled = enable;
if (mCreated) {
updateVolume();
}
}
}
/**
* Returns whether to enable the volume slider and volume control using the volume keys
* when the route supports it.
*/
public boolean isVolumeControlEnabled() {
return mVolumeControlEnabled;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().requestFeature(Window.FEATURE_LEFT_ICON);
setContentView(R.layout.media_route_controller_dialog);
mVolumeLayout = (LinearLayout)findViewById(R.id.media_route_volume_layout);
mVolumeSlider = (SeekBar)findViewById(R.id.media_route_volume_slider);
mVolumeSlider.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
private final Runnable mStopTrackingTouch = new Runnable() {
@Override
public void run() {
if (mVolumeSliderTouched) {
mVolumeSliderTouched = false;
updateVolume();
}
}
};
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
if (mVolumeSliderTouched) {
mVolumeSlider.removeCallbacks(mStopTrackingTouch);
} else {
mVolumeSliderTouched = true;
}
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// Defer resetting mVolumeSliderTouched to allow the media route provider
// a little time to settle into its new state and publish the final
// volume update.
mVolumeSlider.postDelayed(mStopTrackingTouch, VOLUME_UPDATE_DELAY_MILLIS);
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if (fromUser) {
mRoute.requestSetVolume(progress);
}
}
});
mDisconnectButton = (Button)findViewById(R.id.media_route_disconnect_button);
mDisconnectButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mRoute.isSelected()) {
mRouter.getDefaultRoute().select();
}
dismiss();
}
});
mCreated = true;
if (update()) {
mControlView = onCreateMediaControlView(savedInstanceState);
FrameLayout controlFrame =
(FrameLayout)findViewById(R.id.media_route_control_frame);
if (mControlView != null) {
controlFrame.addView(mControlView);
controlFrame.setVisibility(View.VISIBLE);
} else {
controlFrame.setVisibility(View.GONE);
}
}
}
@Override
public void onAttachedToWindow() {
super.onAttachedToWindow();
mRouter.addCallback(0, mCallback, MediaRouter.CALLBACK_FLAG_UNFILTERED_EVENTS);
update();
}
@Override
public void onDetachedFromWindow() {
mRouter.removeCallback(mCallback);
super.onDetachedFromWindow();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN
|| keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
mRoute.requestUpdateVolume(keyCode == KeyEvent.KEYCODE_VOLUME_DOWN ? -1 : 1);
return true;
}
return super.onKeyDown(keyCode, event);
}
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN
|| keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
return true;
}
return super.onKeyUp(keyCode, event);
}
private boolean update() {
if (!mRoute.isSelected() || mRoute.isDefault()) {
dismiss();
return false;
}
setTitle(mRoute.getName());
updateVolume();
Drawable icon = getIconDrawable();
if (icon != mCurrentIconDrawable) {
mCurrentIconDrawable = icon;
getWindow().setFeatureDrawable(Window.FEATURE_LEFT_ICON, icon);
}
return true;
}
private Drawable getIconDrawable() {
if (mRoute.isConnecting()) {
if (mMediaRouteConnectingDrawable == null) {
mMediaRouteConnectingDrawable = getContext().getDrawable(
R.drawable.ic_media_route_connecting_holo_dark);
}
return mMediaRouteConnectingDrawable;
} else {
if (mMediaRouteOnDrawable == null) {
mMediaRouteOnDrawable = getContext().getDrawable(
R.drawable.ic_media_route_on_holo_dark);
}
return mMediaRouteOnDrawable;
}
}
private void updateVolume() {
if (!mVolumeSliderTouched) {
if (isVolumeControlAvailable()) {
mVolumeLayout.setVisibility(View.VISIBLE);
mVolumeSlider.setMax(mRoute.getVolumeMax());
mVolumeSlider.setProgress(mRoute.getVolume());
} else {
mVolumeLayout.setVisibility(View.GONE);
}
}
}
private boolean isVolumeControlAvailable() {
return mVolumeControlEnabled && mRoute.getVolumeHandling() ==
MediaRouter.RouteInfo.PLAYBACK_VOLUME_VARIABLE;
}
private final class MediaRouterCallback extends MediaRouter.SimpleCallback {
@Override
public void onRouteUnselected(MediaRouter router, int type, RouteInfo info) {
update();
}
@Override
public void onRouteChanged(MediaRouter router, MediaRouter.RouteInfo route) {
update();
}
@Override
public void onRouteVolumeChanged(MediaRouter router, MediaRouter.RouteInfo route) {
if (route == mRoute) {
updateVolume();
}
}
@Override
public void onRouteGrouped(MediaRouter router, RouteInfo info, RouteGroup group,
int index) {
update();
}
@Override
public void onRouteUngrouped(MediaRouter router, RouteInfo info, RouteGroup group) {
update();
}
}
}