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 com.google.android.apps.mytracks.util;

import com.google.android.maps.mytracks.R;

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;

/**
 * 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) {
    if (ApiAdapterFactory.getApiAdapter().hasDialogTitleDivider()) {
      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
      }
    }
  }
}