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| 1 | +import 'dart:convert'; |
| 2 | + |
| 3 | +import 'package:flutter_background_geolocation/flutter_background_geolocation.dart' |
| 4 | + as bg; |
| 5 | +import 'package:flutter/material.dart'; |
| 6 | + |
| 7 | +import '../app_localizations.dart'; |
| 8 | +import '../components/banner_image.dart'; |
| 9 | +import '../components/survey_tile.dart'; |
| 10 | +import '../mocks/mock_survey.dart'; |
| 11 | +import '../models/survey.dart'; |
| 12 | +import '../models/custom_locations.dart'; |
| 13 | +import '../ui/web_view.dart'; |
| 14 | +import '../styles.dart'; |
| 15 | + |
| 16 | +const BannerImageHeight = 300.0; |
| 17 | +const BodyVerticalPadding = 20.0; |
| 18 | +const FooterHeight = 100.0; |
| 19 | + |
| 20 | +class SurveyDetail extends StatefulWidget { |
| 21 | + final int surveyID; |
| 22 | + |
| 23 | + SurveyDetail(this.surveyID); |
| 24 | + |
| 25 | + @override |
| 26 | + _SurveyDetailState createState() => _SurveyDetailState(surveyID); |
| 27 | +} |
| 28 | + |
| 29 | +class _SurveyDetailState extends State<SurveyDetail> { |
| 30 | + final int surveyID; |
| 31 | + Survey survey = Survey.blank(); |
| 32 | + bool consent = false; |
| 33 | + |
| 34 | + _SurveyDetailState(this.surveyID); |
| 35 | + |
| 36 | + @override |
| 37 | + void initState() { |
| 38 | + super.initState(); |
| 39 | + loadData(); |
| 40 | + } |
| 41 | + |
| 42 | + @override |
| 43 | + Widget build(BuildContext context) { |
| 44 | + return Scaffold( |
| 45 | + appBar: AppBar( |
| 46 | + title: Text( |
| 47 | + AppLocalizations.of(context)!.translate("about_the_project"))), |
| 48 | + body: Stack( |
| 49 | + children: [ |
| 50 | + _renderBody(context, survey), |
| 51 | + _renderFooter(context), |
| 52 | + //_renderConsentForm(), |
| 53 | + ], |
| 54 | + ), |
| 55 | + ); |
| 56 | + } |
| 57 | + |
| 58 | + loadData() { |
| 59 | + final survey = MockSurvey.fetchByID(this.surveyID); |
| 60 | + |
| 61 | + if (mounted) { |
| 62 | + setState(() { |
| 63 | + this.survey = survey; |
| 64 | + }); |
| 65 | + } |
| 66 | + } |
| 67 | + |
| 68 | + Widget _renderBody(BuildContext context, Survey survey) { |
| 69 | + var result = <Widget>[]; |
| 70 | + result.add(BannerImage(url: survey.imageUrl, height: BannerImageHeight)); |
| 71 | + result.add(_renderHeader()); |
| 72 | + result.add(_renderConsentForm()); |
| 73 | + result.add(_renderBottomSpacer()); |
| 74 | + return SingleChildScrollView( |
| 75 | + child: Column( |
| 76 | + mainAxisAlignment: MainAxisAlignment.start, |
| 77 | + crossAxisAlignment: CrossAxisAlignment.stretch, |
| 78 | + children: result)); |
| 79 | + } |
| 80 | + |
| 81 | + Widget _renderHeader() { |
| 82 | + return Container( |
| 83 | + padding: EdgeInsets.symmetric( |
| 84 | + vertical: BodyVerticalPadding, |
| 85 | + horizontal: Styles.horizontalPaddingDefault), |
| 86 | + child: SurveyTile(survey: survey, darkTheme: false), |
| 87 | + ); |
| 88 | + } |
| 89 | + |
| 90 | + Widget _renderFooter(BuildContext contexty) { |
| 91 | + return Column( |
| 92 | + mainAxisAlignment: MainAxisAlignment.end, |
| 93 | + crossAxisAlignment: CrossAxisAlignment.stretch, |
| 94 | + children: [ |
| 95 | + Container( |
| 96 | + decoration: BoxDecoration(color: Colors.white.withOpacity(0.5)), |
| 97 | + height: FooterHeight, |
| 98 | + child: Container( |
| 99 | + padding: EdgeInsets.symmetric(vertical: 20.0, horizontal: 30.0), |
| 100 | + child: _renderTakeSurveyButton(), |
| 101 | + ), |
| 102 | + ) |
| 103 | + ], |
| 104 | + ); |
| 105 | + } |
| 106 | + |
| 107 | + Widget _renderConsentForm() { |
| 108 | + String title = AppLocalizations.of(context)!.translate("consent_form"); |
| 109 | + String text = AppLocalizations.of(context)!.translate("do_you_agree_to_share_your_anonymous_location_with") + "${survey.name}?"; |
| 110 | + |
| 111 | + return Container( |
| 112 | + height: SurveyTileHeight, |
| 113 | + padding: EdgeInsets.symmetric( |
| 114 | + //vertical: BodyVerticalPadding, |
| 115 | + horizontal: Styles.horizontalPaddingDefault), |
| 116 | + child: Column( |
| 117 | + mainAxisAlignment: MainAxisAlignment.spaceEvenly, |
| 118 | + crossAxisAlignment: CrossAxisAlignment.start, |
| 119 | + children: [ |
| 120 | + Text('$title', |
| 121 | + overflow: TextOverflow.ellipsis, |
| 122 | + maxLines: 1, |
| 123 | + style: Styles.surveyTileTitleLight), |
| 124 | + Row( |
| 125 | + children: [ |
| 126 | + Checkbox( |
| 127 | + value: consent, |
| 128 | + onChanged: (bool? newValue) { |
| 129 | + setState(() { |
| 130 | + consent = newValue!; |
| 131 | + }); |
| 132 | + }, |
| 133 | + ), |
| 134 | + Expanded( |
| 135 | + child: Text('$text', |
| 136 | + overflow: TextOverflow.ellipsis, |
| 137 | + maxLines: 3, |
| 138 | + style: Styles.surveyTileCaption), |
| 139 | + ) |
| 140 | + ], |
| 141 | + ), |
| 142 | + ], |
| 143 | + ), |
| 144 | + ); |
| 145 | + } |
| 146 | + |
| 147 | + Widget _renderTakeSurveyButton() { |
| 148 | + return TextButton( |
| 149 | + //color: Styles.accentColor, |
| 150 | + //textColor: Styles.textColorBright, |
| 151 | + style: ButtonStyle( |
| 152 | + backgroundColor: MaterialStateProperty.all(Colors.blue), |
| 153 | + ), |
| 154 | + onPressed: () => { |
| 155 | + _navigationToSurvey(context), |
| 156 | + }, |
| 157 | + child: Text( |
| 158 | + 'Take Survey'.toUpperCase(), |
| 159 | + style: Styles.textCTAButton, |
| 160 | + ), |
| 161 | + ); |
| 162 | + } |
| 163 | + |
| 164 | + Future<void> _navigationToSurvey(BuildContext context) async { |
| 165 | + String locationHistoryJSON = ""; |
| 166 | + |
| 167 | + // If we have consent, send location history. Otherwise, send empty string |
| 168 | + if (consent) { |
| 169 | + List allLocations = await bg.BackgroundGeolocation.locations; |
| 170 | + List<ShareLocation> customLocation = []; |
| 171 | + |
| 172 | + // We get only timestamp and coordinates into our custom class |
| 173 | + for (var thisLocation in allLocations) { |
| 174 | + ShareLocation _loc = new ShareLocation( |
| 175 | + bg.Location(thisLocation).timestamp, |
| 176 | + bg.Location(thisLocation).coords.latitude, |
| 177 | + bg.Location(thisLocation).coords.longitude); |
| 178 | + customLocation.add(_loc); |
| 179 | + } |
| 180 | + |
| 181 | + locationHistoryJSON = jsonEncode(customLocation); |
| 182 | + locationHistoryJSON = locationHistoryJSON.replaceAll("\"", |
| 183 | + "'"); //We replace " into ' to avoid a javascript exception when we post it in the webview's form |
| 184 | + } else { |
| 185 | + locationHistoryJSON = "I do not agree to share my location history."; |
| 186 | + } |
| 187 | + |
| 188 | + Navigator.push( |
| 189 | + context, |
| 190 | + MaterialPageRoute( |
| 191 | + builder: (context) => |
| 192 | + MyWebView(survey.webUrl, locationHistoryJSON))); |
| 193 | + } |
| 194 | + |
| 195 | + Widget _renderBottomSpacer() { |
| 196 | + return Container(height: FooterHeight); |
| 197 | + } |
| 198 | +} |
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