net.reichholf.dreamdroid.fragment.dialogs.MultiChoiceDialog.java Source code

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Here is the source code for net.reichholf.dreamdroid.fragment.dialogs.MultiChoiceDialog.java

Source

/*  2010 Stephan Reichholf <stephan at reichholf dot net>
 * 
 * Licensed under the Create-Commons Attribution-Noncommercial-Share Alike 3.0 Unported
 * http://creativecommons.org/licenses/by-nc-sa/3.0/
 */

package net.reichholf.dreamdroid.fragment.dialogs;

import android.app.Activity;
import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;

import com.afollestad.materialdialogs.MaterialDialog;

import net.reichholf.dreamdroid.R;
import net.reichholf.dreamdroid.helpers.BundleHelper;

import java.util.ArrayList;

/**
 * @author sre
 */
public class MultiChoiceDialog extends DialogFragment {
    private static final String KEY_TITLE_ID = "titleId";
    private static final String KEY_ITEMS = "items";
    private static final String KEY_CHECKED_ITEMS = "checkedItems";
    private static final String KEY_POSITIVE_STRING_ID = "positiveStringId";

    private int mTitleId;
    private CharSequence[] mItems;
    private boolean[] mCheckedItems;
    private int mPositiveStringId;

    public interface MultiChoiceDialogListener {
        public void onMultiChoiceDialogSelection(String dialogTag, DialogInterface dialog, Integer[] selected);

        public void onMultiChoiceDialogFinish(String dialogTag, int result);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setRetainInstance(true);
    }

    @Override
    public void onDestroyView() {
        if (getDialog() != null && getRetainInstance())
            getDialog().setDismissMessage(null);
        super.onDestroyView();
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        outState.putString("WORKAROUND_FOR_BUG_19917_KEY", "WORKAROUND_FOR_BUG_19917_VALUE");
        outState.putBooleanArray("checkedItems", mCheckedItems);
        super.onSaveInstanceState(outState);
    }

    public static MultiChoiceDialog newInstance(int titleId, CharSequence[] items, boolean[] checkedItems) {
        return MultiChoiceDialog.newInstance(titleId, items, checkedItems, R.string.ok, -1);
    }

    public static MultiChoiceDialog newInstance(int titleId, CharSequence[] items, boolean[] checkedItems,
            int positiveStringId, int negativeStringId) {

        MultiChoiceDialog fragment = new MultiChoiceDialog();
        Bundle args = new Bundle();
        args.putInt(KEY_TITLE_ID, titleId);
        args.putStringArrayList(KEY_ITEMS, BundleHelper.toStringArrayList(items));
        args.putBooleanArray(KEY_CHECKED_ITEMS, checkedItems);
        args.putInt(KEY_POSITIVE_STRING_ID, positiveStringId);
        fragment.setArguments(args);
        return fragment;
    }

    public void init() {
        Bundle args = getArguments();
        mTitleId = args.getInt(KEY_TITLE_ID);
        mItems = BundleHelper.toCharSequenceArray(args.getStringArrayList((KEY_ITEMS)));
        mCheckedItems = args.getBooleanArray(KEY_CHECKED_ITEMS);
        mPositiveStringId = args.getInt(KEY_POSITIVE_STRING_ID);
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        init();
        if (savedInstanceState != null) {
            boolean[] checked = savedInstanceState.getBooleanArray("checkedItems");
            if (checked != null)
                mCheckedItems = checked;
        }
        ArrayList<Integer> selectedList = new ArrayList<>();
        for (int i = 0; i < mCheckedItems.length; ++i) {
            if (mCheckedItems[i])
                selectedList.add(i);
        }
        Integer[] selected = new Integer[selectedList.size()];
        selectedList.toArray(selected);

        MaterialDialog.Builder builder;
        builder = new MaterialDialog.Builder(getActivity());
        builder.title(mTitleId).items(mItems)
                .itemsCallbackMultiChoice(selected, new MaterialDialog.ListCallbackMulti() {
                    @Override
                    public void onSelection(MaterialDialog materialDialog, Integer[] selected,
                            CharSequence[] charSequences) {
                        ((MultiChoiceDialogListener) getActivity()).onMultiChoiceDialogSelection(getTag(),
                                materialDialog, selected);
                        ((MultiChoiceDialogListener) getActivity()).onMultiChoiceDialogFinish(getTag(),
                                Activity.RESULT_OK);
                    }
                }).positiveText(mPositiveStringId);

        return builder.build();
    }
}