OpenTracks/src/main/java/de/dennisguse/opentracks/util/DialogUtils.java

/*
 * Copyright 2012 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package de.dennisguse.opentracks.util;

import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.LinearLayout;

import de.dennisguse.opentracks.R;

/**
 * Utilities for creating dialogs.
 *
 * @author Jimmy Shih
 */
public class DialogUtils {

    private DialogUtils() {
    }

    /**
     * Creates a confirmation dialog.
     *
     * @param context    the context
     * @param titleId    the title
     * @param message    the message
     * @param okListener the listener when OK is clicked
     */
    public static Dialog createConfirmationDialog(final Context context, int titleId, String message, DialogInterface.OnClickListener okListener) {
        final AlertDialog alertDialog = new AlertDialog.Builder(context)
                .setCancelable(true)
                .setIcon(android.R.drawable.ic_dialog_alert)
                .setMessage(message)
                .setNegativeButton(R.string.generic_no, null)
                .setPositiveButton(R.string.generic_yes, okListener)
                .setTitle(titleId).create();
        alertDialog.setOnShowListener(new DialogInterface.OnShowListener() {

            @Override
            public void onShow(DialogInterface dialog) {
                setDialogTitleDivider(context, alertDialog);
            }
        });
        return alertDialog;
    }

    /**
     * Creates a spinner progress dialog.
     *
     * @param context          the context
     * @param messageId        the progress message id
     * @param onCancelListener the cancel listener
     */
    public static ProgressDialog createSpinnerProgressDialog(Context context, int messageId, DialogInterface.OnCancelListener onCancelListener) {
        return createProgressDialog(true, context, messageId, onCancelListener);
    }

    /**
     * Creates a horizontal progress dialog.
     *
     * @param context          the context
     * @param messageId        the progress message id
     * @param onCancelListener the cancel listener
     * @param formatArgs       the format arguments for the messageId
     */
    public static ProgressDialog createHorizontalProgressDialog(Context context, int messageId, DialogInterface.OnCancelListener onCancelListener, Object... formatArgs) {
        return createProgressDialog(false, context, messageId, onCancelListener, formatArgs);
    }

    /**
     * Creates a progress dialog.
     *
     * @param spinner          true to use the spinner style
     * @param context          the context
     * @param messageId        the progress message id
     * @param onCancelListener the cancel listener
     * @param formatArgs       the format arguments for the message id
     */
    private static ProgressDialog createProgressDialog(boolean spinner, final Context context, int messageId, DialogInterface.OnCancelListener onCancelListener, Object... formatArgs) {
        final ProgressDialog progressDialog = new ProgressDialog(context);
        progressDialog.setCancelable(true);
        progressDialog.setCanceledOnTouchOutside(false);
        progressDialog.setIcon(android.R.drawable.ic_dialog_info);
        progressDialog.setIndeterminate(true);
        progressDialog.setMessage(context.getString(messageId, formatArgs));
        progressDialog.setOnCancelListener(onCancelListener);
        progressDialog.setProgressStyle(spinner ? ProgressDialog.STYLE_SPINNER : ProgressDialog.STYLE_HORIZONTAL);
        progressDialog.setTitle(R.string.generic_progress_title);
        progressDialog.setOnShowListener(new DialogInterface.OnShowListener() {

            @Override
            public void onShow(DialogInterface dialog) {
                setDialogTitleDivider(context, progressDialog);
            }
        });
        return progressDialog;
    }

    /**
     * Sets the dialog title divider.
     *
     * @param context the context
     * @param dialog  the dialog
     */
    public static void setDialogTitleDivider(Context context, Dialog dialog) {
        try {
            ViewGroup decorView = (ViewGroup) dialog.getWindow().getDecorView();
            if (decorView == null) {
                return;
            }
            FrameLayout windowContentView = (FrameLayout) decorView.getChildAt(0);
            if (windowContentView == null) {
                return;
            }
            FrameLayout contentView = (FrameLayout) windowContentView.getChildAt(0);
            if (contentView == null) {
                return;
            }
            LinearLayout parentPanel = (LinearLayout) contentView.getChildAt(0);
            if (parentPanel == null) {
                return;
            }
            LinearLayout topPanel = (LinearLayout) parentPanel.getChildAt(0);
            if (topPanel == null) {
                return;
            }
            View titleDivider = topPanel.getChildAt(2);
            if (titleDivider == null) {
                return;
            }
            titleDivider.setBackgroundColor(context.getResources().getColor(R.color.holo_orange_dark));
        } catch (Exception e) {
            // Can safely ignore
        }
    }
}