org.gateshipone.malp.application.fragments.serverfragments.ChoosePlaylistDialog.java Source code

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Here is the source code for org.gateshipone.malp.application.fragments.serverfragments.ChoosePlaylistDialog.java

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/*
 *  Copyright (C) 2017 Team Gateship-One
 *  (Hendrik Borghorst & Frederik Luetkes)
 *
 *  The AUTHORS.md file contains a detailed contributors list:
 *  <https://github.com/gateship-one/malp/blob/master/AUTHORS.md>
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package org.gateshipone.malp.application.fragments.serverfragments;

import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.ContextCompat;
import android.support.v4.content.Loader;

import java.util.List;

import org.gateshipone.malp.R;
import org.gateshipone.malp.application.adapters.FileAdapter;
import org.gateshipone.malp.application.callbacks.OnSaveDialogListener;
import org.gateshipone.malp.application.loaders.PlaylistsLoader;
import org.gateshipone.malp.application.utils.ThemeUtils;
import org.gateshipone.malp.mpdservice.mpdprotocol.mpdobjects.MPDFileEntry;
import org.gateshipone.malp.mpdservice.mpdprotocol.mpdobjects.MPDPlaylist;

public class ChoosePlaylistDialog extends DialogFragment
        implements LoaderManager.LoaderCallbacks<List<MPDFileEntry>> {

    public static final String EXTRA_SHOW_NEW_ENTRY = "show_newentry";

    /**
     * Listener to save the bookmark
     */
    OnSaveDialogListener mSaveCallback;

    /**
     * Adapter used for the ListView
     */
    private FileAdapter mPlaylistsListViewAdapter;

    private boolean mShowNewEntry;

    public void setCallback(OnSaveDialogListener callback) {
        mSaveCallback = callback;
    }

    /**
     * This method creates a new loader for this fragment.
     *
     * @param id   The id of the loader
     * @param args Optional arguments
     * @return Return a new Loader instance that is ready to start loading.
     */
    @Override
    public Loader<List<MPDFileEntry>> onCreateLoader(int id, Bundle args) {
        return new PlaylistsLoader(getActivity(), mShowNewEntry);
    }

    /**
     * Called when the loader finished loading its data.
     *
     * @param loader The used loader itself
     * @param data   Data of the loader
     */
    @Override
    public void onLoadFinished(Loader<List<MPDFileEntry>> loader, List<MPDFileEntry> data) {
        mPlaylistsListViewAdapter.swapModel(data);
    }

    /**
     * If a loader is reset the model data should be cleared.
     *
     * @param loader Loader that was resetted.
     */
    @Override
    public void onLoaderReset(Loader<List<MPDFileEntry>> loader) {
        mPlaylistsListViewAdapter.swapModel(null);
    }

    /**
     * Create the dialog to choose to override an existing bookmark or to create a new bookmark.
     */
    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        Bundle args = getArguments();

        if (null != args) {
            mShowNewEntry = args.getBoolean(EXTRA_SHOW_NEW_ENTRY);
        }

        // Use the Builder class for convenient dialog construction
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

        mPlaylistsListViewAdapter = new FileAdapter(getActivity(), false, false);

        builder.setTitle(getString(R.string.dialog_choose_playlist))
                .setAdapter(mPlaylistsListViewAdapter, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        if (null == mSaveCallback) {
                            return;
                        }
                        if (which == 0) {
                            // open save dialog to create a new playlist
                            mSaveCallback.onCreateNewObject();
                        } else {
                            // override existing playlist
                            MPDPlaylist playlist = (MPDPlaylist) mPlaylistsListViewAdapter.getItem(which);
                            String objectTitle = playlist.getPath();
                            mSaveCallback.onSaveObject(objectTitle);
                        }
                    }
                }).setNegativeButton(R.string.dialog_action_cancel, new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        // User cancelled the dialog don't save object
                        getDialog().cancel();
                    }
                });

        // Prepare loader ( start new one or reuse old )
        getLoaderManager().initLoader(0, getArguments(), this);

        // set divider
        AlertDialog dlg = builder.create();
        dlg.getListView().setDivider(
                new ColorDrawable(ThemeUtils.getThemeColor(getContext(), R.attr.malp_color_background_selected)));
        dlg.getListView().setDividerHeight(getResources().getDimensionPixelSize(R.dimen.list_divider_size));

        return dlg;
    }
}