MediaRouteChooserDialogManager.java

// Copyright 2015 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.chrome.browser.media.router;

import android.content.Context;
import android.content.DialogInterface;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentManager;
import android.support.v7.media.MediaRouteSelector;

import org.chromium.chrome.browser.media.router.cast.MediaSink;
import org.chromium.chrome.browser.media.router.cast.MediaSource;

/**
 * Manages the dialog responsible for selecting a {@link MediaSink}.
 */
public class MediaRouteChooserDialogManager extends BaseMediaRouteDialogManager {

    private static final String DIALOG_FRAGMENT_TAG =
            "android.support.v7.mediarouter:MediaRouteChooserDialogFragment";

    public MediaRouteChooserDialogManager(MediaSource source, Context applicationContext,
            MediaRouteDialogDelegate delegate) {
        super(source, applicationContext, delegate);
    }

    /**
     * Fragment implementation for MediaRouteChooserDialogManager.
     */
    public static class Fragment extends BaseMediaRouteDialogManager.Fragment {
        private boolean mCancelled;

        public Fragment() {
            super();
        }

        public Fragment(BaseMediaRouteDialogManager manager) {
            super(manager);
        }

        @Override
        public void onCancel(DialogInterface dialog) {
            mCancelled = true;

            mManager.delegate().onDialogCancelled();

            super.onCancel(dialog);
        }

        @Override
        public void onDismiss(DialogInterface dialog) {
            super.onDismiss(dialog);

            if (mCancelled || mManager == null) return;

            MediaSink newSink =
                    MediaSink.fromRoute(mManager.androidMediaRouter().getSelectedRoute());
            mManager.delegate().onSinkSelected(newSink);
        }
    }

    @Override
    protected DialogFragment openDialogInternal(FragmentManager fm) {
        if (fm.findFragmentByTag(DIALOG_FRAGMENT_TAG) != null) return null;

        Fragment fragment = new Fragment(this);
        MediaRouteSelector selector = mediaSource().buildRouteSelector();
        if (selector == null) return null;

        fragment.setRouteSelector(selector);
        fragment.show(fm, DIALOG_FRAGMENT_TAG);
        fm.executePendingTransactions();

        return fragment;
    }
}