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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.email.activity.setup;
     18 
     19 import android.app.AlertDialog;
     20 import android.app.Dialog;
     21 import android.app.DialogFragment;
     22 import android.app.ProgressDialog;
     23 import android.content.Context;
     24 import android.content.DialogInterface;
     25 import android.os.Bundle;
     26 
     27 import com.android.email.R;
     28 import com.android.mail.utils.LogUtils;
     29 
     30 /**
     31  * Simple dialog that shows progress as we work through the settings checks.
     32  * This is stateless except for its UI (e.g. current strings) and can be torn down or
     33  * recreated at any time without affecting the account checking progress.
     34  */
     35 public class CheckSettingsProgressDialogFragment extends DialogFragment {
     36     public final static String TAG = "CheckProgressDialog";
     37 
     38     // Extras for saved instance state
     39     private final static String ARGS_PROGRESS_STRING = "CheckProgressDialog.Progress";
     40     private final static String ARGS_MODE_INT = "CheckProgressDialog.Mode";
     41 
     42     // UI
     43     private String mProgressString;
     44 
     45     public interface Callback {
     46         void onCheckSettingsProgressDialogCancel();
     47     }
     48 
     49     // Public no-args constructor needed for fragment re-instantiation
     50     public CheckSettingsProgressDialogFragment() {}
     51 
     52     /**
     53      * Create a dialog that reports progress
     54      * @param checkMode check settings mode
     55      */
     56     public static CheckSettingsProgressDialogFragment newInstance(int checkMode) {
     57         final CheckSettingsProgressDialogFragment f = new CheckSettingsProgressDialogFragment();
     58         final Bundle b = new Bundle(1);
     59         b.putInt(ARGS_MODE_INT, checkMode);
     60         f.setArguments(b);
     61         return f;
     62     }
     63 
     64     /**
     65      * Update the progress of an existing dialog
     66      * @param progress latest progress to be displayed
     67      */
     68     protected void updateProgress(int progress) {
     69         mProgressString = AccountCheckSettingsFragment.getProgressString(getActivity(), progress);
     70         final AlertDialog dialog = (AlertDialog) getDialog();
     71         if (dialog != null && mProgressString != null) {
     72             dialog.setMessage(mProgressString);
     73         }
     74     }
     75 
     76     @Override
     77     public Dialog onCreateDialog(Bundle savedInstanceState) {
     78         final Context context = getActivity();
     79         if (savedInstanceState != null) {
     80             mProgressString = savedInstanceState.getString(ARGS_PROGRESS_STRING);
     81         }
     82         if (mProgressString == null) {
     83             final int checkMode = getArguments().getInt(ARGS_MODE_INT);
     84             final int progress = AccountCheckSettingsFragment.getProgressForMode(checkMode);
     85             mProgressString = AccountCheckSettingsFragment.getProgressString(getActivity(),
     86                     progress);
     87         }
     88 
     89         // Don't bail out if the user taps outside the progress window
     90         setCancelable(false);
     91 
     92         final ProgressDialog dialog = new ProgressDialog(context);
     93         dialog.setIndeterminate(true);
     94         dialog.setMessage(mProgressString);
     95         dialog.setButton(DialogInterface.BUTTON_NEGATIVE,
     96                 context.getString(android.R.string.cancel),
     97                 new DialogInterface.OnClickListener() {
     98                     @Override
     99                     public void onClick(DialogInterface dialog, int which) {
    100                         dialog.cancel();
    101                     }
    102                 });
    103         return dialog;
    104     }
    105 
    106     /**
    107      * Listen for cancellation, which can happen from places other than the
    108      * negative button (e.g. touching outside the dialog), and stop the checker
    109      */
    110     @Override
    111     public void onCancel(DialogInterface dialog) {
    112         super.onCancel(dialog);
    113         final Callback callback = (Callback) getActivity();
    114         if (callback != null) {
    115             callback.onCheckSettingsProgressDialogCancel();
    116         } else {
    117             LogUtils.d(LogUtils.TAG, "Null callback in CheckSettings dialog onCancel");
    118         }
    119     }
    120 
    121     @Override
    122     public void onSaveInstanceState(Bundle outState) {
    123         super.onSaveInstanceState(outState);
    124         outState.putString(ARGS_PROGRESS_STRING, mProgressString);
    125     }
    126 }
    127