356 lines
12 KiB
Java
356 lines
12 KiB
Java
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.internal.app;
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import com.android.internal.R;
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import android.app.AlertDialog;
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import android.app.MediaRouteActionProvider;
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import android.app.MediaRouteButton;
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import android.content.Context;
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import android.content.DialogInterface;
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import android.content.res.Resources;
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import android.content.res.TypedArray;
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import android.graphics.drawable.AnimationDrawable;
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import android.graphics.drawable.Drawable;
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import android.graphics.drawable.StateListDrawable;
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import android.media.MediaRouter;
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import android.media.MediaRouter.RouteGroup;
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import android.media.MediaRouter.RouteInfo;
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import android.os.Bundle;
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import android.util.TypedValue;
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import android.view.KeyEvent;
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import android.view.View;
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import android.widget.FrameLayout;
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import android.widget.LinearLayout;
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import android.widget.SeekBar;
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/**
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* This class implements the route controller dialog for {@link MediaRouter}.
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* <p>
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* This dialog allows the user to control or disconnect from the currently selected route.
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* </p>
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*
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* @see MediaRouteButton
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* @see MediaRouteActionProvider
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*
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* TODO: Move this back into the API, as in the support library media router.
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*/
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public class MediaRouteControllerDialog extends AlertDialog {
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// Time to wait before updating the volume when the user lets go of the seek bar
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// to allow the route provider time to propagate the change and publish a new
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// route descriptor.
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private static final int VOLUME_UPDATE_DELAY_MILLIS = 250;
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private final MediaRouter mRouter;
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private final MediaRouterCallback mCallback;
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private final MediaRouter.RouteInfo mRoute;
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private boolean mCreated;
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private Drawable mMediaRouteButtonDrawable;
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private int[] mMediaRouteConnectingState = { R.attr.state_checked, R.attr.state_enabled };
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private int[] mMediaRouteOnState = { R.attr.state_activated, R.attr.state_enabled };
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private Drawable mCurrentIconDrawable;
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private boolean mVolumeControlEnabled = true;
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private LinearLayout mVolumeLayout;
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private SeekBar mVolumeSlider;
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private boolean mVolumeSliderTouched;
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private View mControlView;
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private boolean mAttachedToWindow;
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public MediaRouteControllerDialog(Context context, int theme) {
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super(context, theme);
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mRouter = (MediaRouter) context.getSystemService(Context.MEDIA_ROUTER_SERVICE);
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mCallback = new MediaRouterCallback();
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mRoute = mRouter.getSelectedRoute();
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}
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/**
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* Gets the route that this dialog is controlling.
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*/
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public MediaRouter.RouteInfo getRoute() {
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return mRoute;
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}
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/**
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* Provides the subclass an opportunity to create a view that will
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* be included within the body of the dialog to offer additional media controls
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* for the currently playing content.
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*
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* @param savedInstanceState The dialog's saved instance state.
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* @return The media control view, or null if none.
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*/
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public View onCreateMediaControlView(Bundle savedInstanceState) {
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return null;
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}
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/**
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* Gets the media control view that was created by {@link #onCreateMediaControlView(Bundle)}.
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*
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* @return The media control view, or null if none.
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*/
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public View getMediaControlView() {
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return mControlView;
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}
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/**
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* Sets whether to enable the volume slider and volume control using the volume keys
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* when the route supports it.
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* <p>
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* The default value is true.
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* </p>
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*/
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public void setVolumeControlEnabled(boolean enable) {
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if (mVolumeControlEnabled != enable) {
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mVolumeControlEnabled = enable;
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if (mCreated) {
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updateVolume();
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}
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}
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}
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/**
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* Returns whether to enable the volume slider and volume control using the volume keys
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* when the route supports it.
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*/
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public boolean isVolumeControlEnabled() {
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return mVolumeControlEnabled;
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}
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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setTitle(mRoute.getName());
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Resources res = getContext().getResources();
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setButton(BUTTON_NEGATIVE, res.getString(R.string.media_route_controller_disconnect),
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new OnClickListener() {
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@Override
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public void onClick(DialogInterface dialogInterface, int id) {
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if (mRoute.isSelected()) {
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if (mRoute.isBluetooth()) {
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mRouter.getDefaultRoute().select();
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} else {
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mRouter.getFallbackRoute().select();
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}
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}
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dismiss();
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}
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});
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View customView = getLayoutInflater().inflate(R.layout.media_route_controller_dialog, null);
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setView(customView, 0, 0, 0, 0);
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super.onCreate(savedInstanceState);
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View customPanelView = getWindow().findViewById(R.id.customPanel);
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if (customPanelView != null) {
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customPanelView.setMinimumHeight(0);
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}
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mVolumeLayout = (LinearLayout) customView.findViewById(R.id.media_route_volume_layout);
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mVolumeSlider = (SeekBar) customView.findViewById(R.id.media_route_volume_slider);
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mVolumeSlider.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
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private final Runnable mStopTrackingTouch = new Runnable() {
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@Override
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public void run() {
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if (mVolumeSliderTouched) {
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mVolumeSliderTouched = false;
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updateVolume();
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}
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}
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};
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@Override
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public void onStartTrackingTouch(SeekBar seekBar) {
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if (mVolumeSliderTouched) {
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mVolumeSlider.removeCallbacks(mStopTrackingTouch);
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} else {
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mVolumeSliderTouched = true;
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}
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}
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@Override
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public void onStopTrackingTouch(SeekBar seekBar) {
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// Defer resetting mVolumeSliderTouched to allow the media route provider
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// a little time to settle into its new state and publish the final
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// volume update.
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mVolumeSlider.postDelayed(mStopTrackingTouch, VOLUME_UPDATE_DELAY_MILLIS);
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}
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@Override
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public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
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if (fromUser) {
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mRoute.requestSetVolume(progress);
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}
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}
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});
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mMediaRouteButtonDrawable = obtainMediaRouteButtonDrawable();
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mCreated = true;
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if (update()) {
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mControlView = onCreateMediaControlView(savedInstanceState);
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FrameLayout controlFrame =
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(FrameLayout) customView.findViewById(R.id.media_route_control_frame);
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if (mControlView != null) {
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controlFrame.addView(mControlView);
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controlFrame.setVisibility(View.VISIBLE);
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} else {
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controlFrame.setVisibility(View.GONE);
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}
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}
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}
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@Override
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public void onAttachedToWindow() {
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super.onAttachedToWindow();
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mAttachedToWindow = true;
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mRouter.addCallback(0, mCallback, MediaRouter.CALLBACK_FLAG_UNFILTERED_EVENTS);
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update();
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}
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@Override
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public void onDetachedFromWindow() {
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mRouter.removeCallback(mCallback);
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mAttachedToWindow = false;
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super.onDetachedFromWindow();
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}
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@Override
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public boolean onKeyDown(int keyCode, KeyEvent event) {
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if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN
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|| keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
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mRoute.requestUpdateVolume(keyCode == KeyEvent.KEYCODE_VOLUME_DOWN ? -1 : 1);
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return true;
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}
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return super.onKeyDown(keyCode, event);
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}
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@Override
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public boolean onKeyUp(int keyCode, KeyEvent event) {
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if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN
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|| keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
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return true;
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}
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return super.onKeyUp(keyCode, event);
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}
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private boolean update() {
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if (!mRoute.isSelected() || mRoute.isDefault()) {
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dismiss();
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return false;
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}
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setTitle(mRoute.getName());
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updateVolume();
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Drawable icon = getIconDrawable();
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if (icon != mCurrentIconDrawable) {
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mCurrentIconDrawable = icon;
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if (icon instanceof AnimationDrawable) {
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AnimationDrawable animDrawable = (AnimationDrawable) icon;
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if (!mAttachedToWindow && !mRoute.isConnecting()) {
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// When the route is already connected before the view is attached, show the
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// last frame of the connected animation immediately.
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if (animDrawable.isRunning()) {
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animDrawable.stop();
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}
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icon = animDrawable.getFrame(animDrawable.getNumberOfFrames() - 1);
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} else if (!animDrawable.isRunning()) {
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animDrawable.start();
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}
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}
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setIcon(icon);
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}
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return true;
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}
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private Drawable obtainMediaRouteButtonDrawable() {
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Context context = getContext();
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TypedValue value = new TypedValue();
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if (!context.getTheme().resolveAttribute(R.attr.mediaRouteButtonStyle, value, true)) {
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return null;
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}
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int[] drawableAttrs = new int[] { R.attr.externalRouteEnabledDrawable };
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TypedArray a = context.obtainStyledAttributes(value.data, drawableAttrs);
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Drawable drawable = a.getDrawable(0);
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a.recycle();
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return drawable;
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}
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private Drawable getIconDrawable() {
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if (!(mMediaRouteButtonDrawable instanceof StateListDrawable)) {
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return mMediaRouteButtonDrawable;
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} else if (mRoute.isConnecting()) {
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StateListDrawable stateListDrawable = (StateListDrawable) mMediaRouteButtonDrawable;
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stateListDrawable.setState(mMediaRouteConnectingState);
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return stateListDrawable.getCurrent();
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} else {
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StateListDrawable stateListDrawable = (StateListDrawable) mMediaRouteButtonDrawable;
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stateListDrawable.setState(mMediaRouteOnState);
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return stateListDrawable.getCurrent();
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}
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}
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private void updateVolume() {
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if (!mVolumeSliderTouched) {
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if (isVolumeControlAvailable()) {
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mVolumeLayout.setVisibility(View.VISIBLE);
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mVolumeSlider.setMax(mRoute.getVolumeMax());
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mVolumeSlider.setProgress(mRoute.getVolume());
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} else {
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mVolumeLayout.setVisibility(View.GONE);
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}
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}
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}
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private boolean isVolumeControlAvailable() {
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return mVolumeControlEnabled && mRoute.getVolumeHandling() ==
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MediaRouter.RouteInfo.PLAYBACK_VOLUME_VARIABLE;
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}
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private final class MediaRouterCallback extends MediaRouter.SimpleCallback {
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@Override
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public void onRouteUnselected(MediaRouter router, int type, RouteInfo info) {
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update();
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}
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@Override
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public void onRouteChanged(MediaRouter router, MediaRouter.RouteInfo route) {
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update();
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}
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@Override
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public void onRouteVolumeChanged(MediaRouter router, MediaRouter.RouteInfo route) {
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if (route == mRoute) {
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updateVolume();
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}
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}
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@Override
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public void onRouteGrouped(MediaRouter router, RouteInfo info, RouteGroup group,
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int index) {
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update();
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}
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@Override
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public void onRouteUngrouped(MediaRouter router, RouteInfo info, RouteGroup group) {
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update();
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}
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}
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}
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