org.transdroid.core.gui.navigation.SetTrackersDialog.java Source code

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Here is the source code for org.transdroid.core.gui.navigation.SetTrackersDialog.java

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/* 
 * Copyright 2010-2013 Eric Kok et al.
 * 
 * Transdroid 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.
 * 
 * Transdroid 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 Transdroid.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.transdroid.core.gui.navigation;

import java.security.InvalidParameterException;
import java.util.Arrays;
import java.util.List;

import org.transdroid.core.R;

import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.view.View;
import android.widget.EditText;

/**
 * A dialog fragment that allows changing the trackers of a torrent by editing the text directly.
 * @author Eric Kok
 */
public class SetTrackersDialog extends DialogFragment {

    private OnTrackersUpdatedListener onTrackersUpdatedListener = null;
    private String currentTrackers = null;

    public SetTrackersDialog() {
        setRetainInstance(true);
    }

    /**
     * Sets the callback for when the user is done updating the trackers list.
     * @param onTrackersUpdatedListener The event listener to this dialog
     * @return This dialog, for method chaining
     */
    public SetTrackersDialog setOnTrackersUpdated(OnTrackersUpdatedListener onTrackersUpdatedListener) {
        this.onTrackersUpdatedListener = onTrackersUpdatedListener;
        return this;
    }

    /**
     * Sets the current trackers text/list that will be available to the user to edit
     * @param currentTrackers The current trackers for the target torrent
     * @return This dialog, for method chaining
     */
    public SetTrackersDialog setCurrentTrackers(String currentTrackers) {
        this.currentTrackers = currentTrackers;
        return this;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        if (currentTrackers == null)
            throw new InvalidParameterException(
                    "Please first set the current trackers text using setCurrentTrackers before opening the dialog.");
        if (onTrackersUpdatedListener == null)
            throw new InvalidParameterException(
                    "Please first set the callback listener using setOnTrackersUpdated before opening the dialog.");
        final View trackersFrame = getActivity().getLayoutInflater().inflate(R.layout.dialog_trackers, null, false);
        final EditText trackersText = (EditText) trackersFrame.findViewById(R.id.trackers_edit);
        trackersText.setText(currentTrackers);
        return new AlertDialog.Builder(getActivity()).setView(trackersFrame)
                .setPositiveButton(R.string.status_update, new OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // User is done editing and requested to update given the text input
                        onTrackersUpdatedListener
                                .onTrackersUpdated(Arrays.asList(trackersText.getText().toString().split("\n")));
                    }
                }).setNegativeButton(android.R.string.cancel, null).show();
    }

    public interface OnTrackersUpdatedListener {
        public void onTrackersUpdated(List<String> updatedTrackers);
    }

}