Upstream Chrome for Android Cast.

third_party/android_media/java/src/org/chromium/third_party/android/media/ChromeMediaRouteControllerDialog.java

Index: third_party/android_media/java/src/org/chromium/third_party/android/media/ChromeMediaRouteControllerDialog.java
diff --git a/third_party/android_media/java/src/org/chromium/third_party/android/media/ChromeMediaRouteControllerDialog.java b/third_party/android_media/java/src/org/chromium/third_party/android/media/ChromeMediaRouteControllerDialog.java
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+/*
+ * 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 org.chromium.third_party.android.media;
+
+import android.app.Dialog;
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.support.v7.media.MediaRouteSelector;
+import android.support.v7.media.MediaRouter;
+import android.support.v7.mediarouter.R;
+import android.util.TypedValue;
+import android.view.ContextThemeWrapper;
+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.
+ * It differs from the default MediaRouteControllerDialog in that the click handler
+ * for the disconnect button calls @code{DisconnectListener}.
+ * </p>
+ */
+public class ChromeMediaRouteControllerDialog extends Dialog {
+    private static final String TAG = "ChromeMediaRouteControllerDialog";
+
+    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;
+    private DisconnectListener mDisconnectListener;
+
+    /**
+     * Define the behavior when clicking the disconnect button.
+     */
+    public static interface DisconnectListener {
+        void onDisconnect();
+    }
+
+    private static final class MediaRouterThemeHelper {
+        private MediaRouterThemeHelper() {
+        }
+
+        public static Context createThemedContext(Context context, boolean forceDark) {
+            boolean isLightTheme = isLightTheme(context);
+            if (isLightTheme && forceDark) {
+                context = new ContextThemeWrapper(context, R.style.Theme_AppCompat);
+                isLightTheme = false;
+            }
+            return new ContextThemeWrapper(context, isLightTheme ?
+                    R.style.Theme_MediaRouter_Light : R.style.Theme_MediaRouter);
+        }
+
+        public static int getThemeResource(Context context, int attr) {
+            TypedValue value = new TypedValue();
+            return context.getTheme().resolveAttribute(attr, value, true) ? value.resourceId : 0;
+        }
+
+        public static Drawable getThemeDrawable(Context context, int attr) {
+            int res = getThemeResource(context, attr);
+            return res != 0 ? context.getResources().getDrawable(res) : null;
+        }
+
+        private static boolean isLightTheme(Context context) {
+            TypedValue value = new TypedValue();
+            return context.getTheme().resolveAttribute(R.attr.isLightTheme, value, true)
+                    && value.data != 0;
+        }
+    }
+
+    public ChromeMediaRouteControllerDialog(Context context,
+            DisconnectListener disconnectListener) {
+        this(context, 0, disconnectListener);
+    }
+
+    private ChromeMediaRouteControllerDialog(Context context, int theme,
+            DisconnectListener disconnectListener) {
+        super(MediaRouterThemeHelper.createThemedContext(context, true), theme);
+        assert disconnectListener != null;
+
+        context = getContext();
+
+        mRouter = MediaRouter.getInstance(context);
+        mCallback = new MediaRouterCallback();
+        mRoute = mRouter.getSelectedRoute();
+        mDisconnectListener = disconnectListener;
+    }
+
+    /**
+     * 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.mr_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() {
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
+                mVolumeSliderTouched = true;
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+                mVolumeSliderTouched = false;
+                updateVolume();
+            }
+
+            @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 (mDisconnectListener != null) {
+                    mDisconnectListener.onDisconnect();
+                }
+                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(MediaRouteSelector.EMPTY, 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 (isVolumeControlAvailable()) {
+            if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
+                mRoute.requestUpdateVolume(-1);
+                return true;
+            } else if (keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
+                mRoute.requestUpdateVolume(1);
+                return true;
+            }
+        }
+        return super.onKeyDown(keyCode, event);
+    }
+
+    @Override
+    public boolean onKeyUp(int keyCode, KeyEvent event) {
+        if (isVolumeControlAvailable()) {
+            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;
+
+            // There seems to be a bug in the framework where feature drawables
+            // will not start animating unless they experience a transition from
+            // invisible to visible.  So we force the drawable to be invisible here.
+            // The window will make the drawable visible when attached.
+            icon.setVisible(false, true);
+            getWindow().setFeatureDrawable(Window.FEATURE_LEFT_ICON, icon);
+        }
+        return true;
+    }
+
+    private Drawable getIconDrawable() {
+        if (mRoute.isConnecting()) {
+            if (mMediaRouteConnectingDrawable == null) {
+                mMediaRouteConnectingDrawable = MediaRouterThemeHelper.getThemeDrawable(
+                        getContext(), R.attr.mediaRouteConnectingDrawable);
+            }
+            return mMediaRouteConnectingDrawable;
+        } else {
+            if (mMediaRouteOnDrawable == null) {
+                mMediaRouteOnDrawable = MediaRouterThemeHelper.getThemeDrawable(
+                        getContext(), R.attr.mediaRouteOnDrawable);
+            }
+            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.Callback {
+        @Override
+        public void onRouteUnselected(MediaRouter router, MediaRouter.RouteInfo route) {
+            update();
+        }
+
+        @Override
+        public void onRouteChanged(MediaRouter router, MediaRouter.RouteInfo route) {
+            update();
+        }
+
+        @Override
+        public void onRouteVolumeChanged(MediaRouter router, MediaRouter.RouteInfo route) {
+            if (route == mRoute) {
+                updateVolume();
+            }
+        }
+    }
+}