org.totschnig.myexpenses.dialog.MessageDialogFragment.java Source code

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Here is the source code for org.totschnig.myexpenses.dialog.MessageDialogFragment.java

Source

/*   This file is part of My Expenses.
 *   My Expenses 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.
 *
 *   My Expenses 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 My Expenses.  If not, see <http://www.gnu.org/licenses/>.
*/

package org.totschnig.myexpenses.dialog;

import java.io.Serializable;

import org.totschnig.myexpenses.MyApplication;
import org.totschnig.myexpenses.R;
import org.totschnig.myexpenses.dialog.MessageDialogFragment.Button;
import org.totschnig.myexpenses.model.Model;

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

public class MessageDialogFragment extends DialogFragment implements OnClickListener {

    public static class Button implements Serializable {
        public Button(int label, int command, Serializable tag) {
            this.label = label;
            this.command = command;
            this.tag = tag;
        }

        public static final Button noButton() {
            return nullButton(android.R.string.no);
        }

        int label;
        int command;
        Serializable tag;

        public static final Button okButton() {
            return nullButton(android.R.string.ok);
        }

        private static Button nullButton(int label) {
            return new Button(label, R.id.NO_COMMAND, null);
        }
    }

    public static final MessageDialogFragment newInstance(int title, int message, Button positive, Button neutral,
            Button negative) {
        return newInstance(title, MyApplication.getInstance().getString(message), positive, neutral, negative);
    }

    public static final MessageDialogFragment newInstance(int title, CharSequence message, Button positive,
            Button neutral, Button negative) {
        MessageDialogFragment dialogFragment = new MessageDialogFragment();
        Bundle bundle = new Bundle();
        bundle.putInt("title", title);
        bundle.putCharSequence("message", message);
        bundle.putSerializable("positive", positive);
        bundle.putSerializable("neutral", neutral);
        bundle.putSerializable("negative", negative);
        dialogFragment.setArguments(bundle);
        return dialogFragment;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        final Bundle bundle = getArguments();
        Activity ctx = getActivity();
        Context wrappedCtx = DialogUtils.wrapContext2(ctx);
        AlertDialog.Builder builder = new AlertDialog.Builder(wrappedCtx).setTitle(bundle.getInt("title"))
                .setMessage(bundle.getCharSequence("message"));
        Button positive = (Button) bundle.getSerializable("positive");
        Button neutral = (Button) bundle.getSerializable("neutral");
        Button negative = (Button) bundle.getSerializable("negative");
        if (positive != null)
            builder.setPositiveButton(positive.label, this);
        if (neutral != null)
            builder.setNeutralButton(neutral.label, this);
        if (negative != null)
            builder.setNegativeButton(negative.label, this);
        return builder.create();
    }

    public void onCancel(DialogInterface dialog) {
        ((MessageDialogListener) getActivity()).cancelDialog();
    }

    @Override
    public void onClick(DialogInterface dialog, int which) {
        Bundle bundle = getArguments();
        Button clicked = null;
        switch (which) {
        case AlertDialog.BUTTON_POSITIVE:
            clicked = (Button) bundle.getSerializable("positive");
            break;
        case AlertDialog.BUTTON_NEUTRAL:
            clicked = (Button) bundle.getSerializable("neutral");
            break;
        case AlertDialog.BUTTON_NEGATIVE:
            clicked = (Button) bundle.getSerializable("negative");
            break;
        }
        if (clicked.command == R.id.NO_COMMAND)
            onCancel(dialog);
        else
            ((MessageDialogListener) getActivity()).dispatchCommand(clicked.command, clicked.tag);
    }

    public interface MessageDialogListener {
        boolean dispatchCommand(int command, Object tag);

        void cancelDialog();
    }
}