mirror of
https://github.com/Esri/offline-editor-js.git
synced 2025-12-15 15:20:05 +00:00
810 lines
36 KiB
HTML
810 lines
36 KiB
HTML
<!DOCTYPE html>
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<!--<html manifest="appcache-features.appcache">-->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<!--The viewport meta tag is used to improve the presentation and behavior of the samples
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on iOS devices-->
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<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
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<!--
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This sample demonstrates using an application manifest to store features and tiles locally with a custom-built
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editor widget. If you are planning on using one of Esri's pre-built widgets such as the AttributeInspector
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then you'll need to use a different pattern for reconstituting the feature layer. See the How-To for more details:
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https://github.com/Esri/offline-editor-js/blob/master/doc/howtouseeditlibrary.md
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The use cases for using this sample are to ensure you can reload and restart you application
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while it is offline and then continue working.
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It is strongly recommended that you use your own optimized build of the ArcGIS API for JavaScript
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using the Web Optimizer: http://jso.arcgis.com/. You can reference the CDN or host it on your
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own web server.
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Here is the list of contents for the optimized ArcGIS JS API file used in this sample app:
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https://github.com/Esri/offline-editor-js/issues/284
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Use the Grunt task in the /samples directory to help generate the manifest file. There is manual
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work involved in determining which files need to go into the manifest. The included manifest
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file should work with this sample to give you an idea of what goes into the manifest.
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A few things to know about manifest files:
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- You cannot load an online url that has a redirect.
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- If there is an error encountered, the manifest file will stop loading
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- The /utils/appCacheManager.js library will auto detect if the manifest changed and
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ask if you want to reload the application.
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HINT: When testing be sure you allow for browser caching. If you are using Chrome make sure you have NOT
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checked Network Tab > Disable cache.
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-->
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<title>AppCache Tiles and Features</title>
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<!-- Bootstrap core CSS -->
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<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
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<link rel="stylesheet" href="../samples/widgets/modal/css/modal-popup.css">
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<link rel="stylesheet" href="//js.arcgis.com/3.14/dijit/themes/claro/claro.css">
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<link rel="stylesheet" href="//js.arcgis.com/3.14/esri/css/esri.css">
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<link rel="stylesheet" href="//esri.github.io/bootstrap-map-js/src/css/bootstrapmap.css">
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<script>
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// DO NOT DELETE!
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// Listen for application cache update events
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// We want to place this as early in the application life-cycle as possible!
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window.addEventListener('load', function(evt) {
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window.applicationCache.addEventListener('updateready', function(evt) {
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if (window.applicationCache.status == window.applicationCache.UPDATEREADY) {
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// Browser downloaded a new app cache.
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if (confirm('A new version of this cache is available.')) {
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window.location.reload();
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console.log("App cache reloaded");
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}
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} else {
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// Manifest didn't changed. Nothing new to server.
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console.log("App cache no change");
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}
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}, false);
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}, false);
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// Reserved for debugging on Safari desktop and mobile
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// Uncomment when doing any debugging on Safari 8 (or previous versions that support App Cache).
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// To delete the application cache file on Safari refer to the following url then close/restart browser:
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// http://stackoverflow.com/questions/5615266/how-do-you-clear-the-offline-cache-for-web-apps-in-safari
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// function logEvent(event) {
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// console.log("Checking for Application Cache Event: " + event.type);
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// }
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//
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// window.applicationCache.addEventListener('checking',logEvent,false);
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// window.applicationCache.addEventListener('noupdate',logEvent,false);
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// window.applicationCache.addEventListener('downloading',logEvent,false);
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// window.applicationCache.addEventListener('cached',logEvent,false);
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// window.applicationCache.addEventListener('updateready',logEvent,false);
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// window.applicationCache.addEventListener('obsolete',logEvent,false);
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//
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// // If you need to catch AppCache errors as early as possible to troubleshoot errors.
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// // You should delete this for production use.
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// window.applicationCache.addEventListener("error",function(err){
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// console.log("ApplicationCache listener: " + err.toString() + ", " + JSON.stringify(err));
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// if (confirm('There was a problem setting this app up for offline. Reload?')) {
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// window.location.reload();
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// console.log("App cache reloaded");
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// }
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// },false);
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</script>
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<style>
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#mapDiv {
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min-height: 400px;
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max-height: 1000px;
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}
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body {
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background-color: #ffffff;
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overflow: hidden;
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font-family: "Trebuchet MS";
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}
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#loader-gif{
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visibility: hidden;
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}
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/* Override mod-popup default */
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.mod-popup-stop-input {color: black;}
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.span-pending {color: blue; padding-left: 1em;}
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.floatRight { float: right;}
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.container { padding: 20px; width: 100%;}
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</style>
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<script src="//github.hubspot.com/offline/offline.min.js"></script>
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<script>
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var locationPath = location.pathname.replace(/\/[^/]+$/, "");
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var dojoConfig = {
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paths: {
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vendor: locationPath + "/../vendor",
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utils: locationPath + "/../utils",
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widgets: locationPath + "/widgets"
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}
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}
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</script>
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<!--
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Include a reference to IndexedDBShim for library to work on Safari 7.x.
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May not be required for all Safari browsers.
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-->
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<!--<script src="//nparashuram.com/IndexedDBShim/dist/indexeddbshim.min.js"></script>-->
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<!--
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This is a locally hosted optimized build of the ArcGIS JS API.
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The optimizer creates a single JavaScript file that you can host yourself.
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To create your own optimized build go to: http://http://jso.arcgis.com/
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-->
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<script src="../samples/jsolib/dojo.js" data-dojo-config="async: true"></script>
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</head>
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<body>
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<!-- Our buttons and online/offline indicator -->
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<div class="container">
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<div class="row">
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<div class="col-xs-10">
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<div class="form form-group btn-group" data-toggle="buttons">
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<button class="btn btn-primary" id="btn-get-tiles">1. Download Tiles</button>
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<button class="btn btn-primary" id="btn-online-offline">2. Go Offline</button>
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</div>
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<span class="span-pending">Pending Edits <span id="span-pending-edits" class="badge">0</span></span>
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<img id="loader-gif" src="images/loading.gif"/>
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</div>
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<div class="col-xs-2">
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<!-- this indicates whether app is offline (down) or online (up) -->
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<button id="btn-state" class="btn btn-success btn-large floatRight">
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<span id="state-span" class="glyphicon glyphicon-link"> Up</span>
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</button>
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</div>
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</div>
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<div class="row">
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<div class="col-xs-12">
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<div id="mapDiv"></div>
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</div>
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</div>
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</div>
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<!-- Stub for modal editing popup -->
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<div id="modal-popup"></div>
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<script>
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require(["esri/map","esri/layers/FeatureLayer",
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"esri/renderers/SimpleRenderer","esri/symbols/SimpleMarkerSymbol",
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"esri/Color",
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"esri/tasks/query",
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"dojo/on",
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"esri/graphic","esri/geometry/Extent", "esri/SpatialReference",
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"widgets/modal/popup",
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"//esri.github.io/bootstrap-map-js/src/js/bootstrapmap.js",
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"../dist/offline-tiles-advanced-src.js",
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"../dist/offline-edit-advanced-src.js",
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"dojo/domReady!"],
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function(Map,FeatureLayer,
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SimpleRenderer,SimpleMarkerSymbol,Color,Query,
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on,Graphic,Extent,SpatialReference,ModalPopup,BootstrapMap) {
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var map = null;
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var _isOnline = true;
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var defaultSymbol;
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var _listener;
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// Variables for editing handling
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var currentFeature, busStopFeatureLayer = null, offlineEdit = null;
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var pendingEdits = document.getElementById("span-pending-edits");
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var imgOfflineIndicator = document.getElementById("state-span");
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var btnState = document.getElementById("btn-state");
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// Variables for handling tiles
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var tileLayer;
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var _currentExtent = null;
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var _wantToCancel;
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var globalState = {};
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var btnGetTiles = document.getElementById("btn-get-tiles");
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var btnOnlineOffline = document.getElementById("btn-online-offline");
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// Important settings for determining which tile layers gets stored for offline use.
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var minZoomAdjust = -1, maxZoomAdjust = 1;
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var EXTENT_BUFFER = 0; //buffers the map extent in meters
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// Misc.
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var loading = document.getElementById("loader-gif");
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// Variables for modal popup
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var popup,closeBtn,saveBtn,deleteBtn,stopMainID,stopID,stopRoutes,stopNames;
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mediaQueries();
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initModalPopup();
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/**
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* NOTE: This is the entry point into the application. The very first thing
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* we need to do is check if the application is online or offline.
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*
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* There have been a few bugs in the offline detection library (offline.min.js)
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* This is a utility check to 100% validate if the application is online or
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* offline prior to launching any map functionality.
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*/
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validateOnline(function(result) {
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if(result) {
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_isOnline = true;
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setUIOnline();
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}
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else {
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_isOnline = false;
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setUIOffline();
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}
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startMap();
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});
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function initModalPopup() {
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popup = new ModalPopup({animation: true, animationDuration: 1},"modal-popup");
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// Variables for modal popup
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closeBtn = document.getElementById("mod-popup-close-btn");
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saveBtn = document.getElementById("mod-popup-save-btn");
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deleteBtn = document.getElementById("mod-popup-delete-btn");
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stopMainID = document.getElementById("stop-main-id");
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stopID = document.getElementById("stop-id");
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stopRoutes = document.getElementById("stop-routes");
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stopNames = document.getElementById("stop-names");
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}
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/**
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* Modify symbol size to devices. Make them easier to touch on.
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* Feel free to tweak this based on your requirements
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*/
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function mediaQueries() {
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var widthQuery = window.matchMedia("(max-width: 768px)");
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var orientation = window.matchMedia("(orientation:portrait)");
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if(widthQuery.matches && orientation.matches){
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defaultSymbol= new SimpleMarkerSymbol().setStyle(
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SimpleMarkerSymbol.STYLE_DIAMOND).setColor(
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new Color([255,0,0,0.5])).setSize(35);
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}
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else{
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defaultSymbol= new SimpleMarkerSymbol().setStyle(
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SimpleMarkerSymbol.STYLE_DIAMOND).setColor(
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new Color([255,0,0,0.5])).setSize(20);
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}
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}
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/**
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* We run this code both online and offline.
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*/
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function startMap() {
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tileLayer = new O.esri.Tiles.OfflineTilesAdvanced("http://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer",function(evt){
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console.log("Tile Layer initialized for offline. App state is: " + Offline.state);
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},_isOnline);
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// We don't need a proxy. All ArcGIS Online Service are CORS enabled.
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tileLayer.offline.proxyPath = null;
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// We are using Esri bootstrap-map-js to create a responsive mapping app
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map = BootstrapMap.create("mapDiv",{
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center: [-104.99,39.75], // long, lat
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zoom: 17,
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sliderStyle: "small"
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});
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map.on("load",function(evt) {
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_currentExtent = evt.map.extent;
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});
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// Add our offline enabled tile layer to the map
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map.addLayer(tileLayer);
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// Initialize our feature layer like we normally would
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busStopFeatureLayer = new FeatureLayer("http://services1.arcgis.com/M8KJPUwAXP8jhtnM/arcgis/rest/services/Denver_Bus_Stops/FeatureServer/0", {
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mode: FeatureLayer.MODE_SNAPSHOT,
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outFields: ["GlobalID","BSID","ROUTES","STOPNAME"]
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});
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//Set the graphics to red boxes to make it easy to click on them
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//on a mobile device.
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busStopFeatureLayer.setRenderer(new SimpleRenderer(defaultSymbol));
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_listener = busStopFeatureLayer.on("update-end",initFeatureUpdateEndListener);
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map.addLayer(busStopFeatureLayer);
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}
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/**
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* If we are offline then the attempt to add the feature layer will fail. The error
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* will show up in the 'update-end' event.
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* Having that error is okay because we want to explicitly control the order in which events happen.
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* In production usage it would be a best practices to check any other errors and handle them appropriately.
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*/
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function initFeatureUpdateEndListener() {
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_listener.remove();
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//**************************************************
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//
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// This is where we detect an offline condition
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// within the lifecycle of the "mapping" application.
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// If we are offline then run our offline
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// specific code for reconstituting our map.
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//
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//**************************************************
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//
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// Extend the feature layer with offline capabilities.
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//
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initOfflineEdits();
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// If app is online then we ONLY need to extend the feature layer.
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if(_isOnline){
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extendFeatureLayer(_isOnline, function(success) {
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if(success){
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// Set click listeners
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on(btnGetTiles,"click",downloadTiles);
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on(btnOnlineOffline, 'click', goOnlineOffline);
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initPanZoomListeners();
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setFeatureLayerClickHandler();
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setModalPopupClickListeners();
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}
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else{
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alert("There was a problem initializing the map for offline.");
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}
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});
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}
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// If the app is offline then we need to retrieve the dataStore from OfflineEditAdvanced
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// and then extend the feature layer using that information.
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else {
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loadFeatureLayerOffline(function(success) {
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if(success) {
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extendFeatureLayer(_isOnline, function(success) {
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console.log("Feature Layer extended successfully OFFLINE!");
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});
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}
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else {
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alert("There was a problem initializing the map for offline.");
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}
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});
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}
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}
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/**
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* **********************************************
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* EVENT LISTENER MANAGEMENT CODE
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* **********************************************
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*/
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/**
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* When panning or zooming let's update certain properties in our offline featureLayerJSON dataStore. This
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* dataStore is available once a feature layer has been extended.
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*/
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function initPanZoomListeners() {
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updateOfflineUsage();
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updateStatus();
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map.on("zoom-end",function(evt) {
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_currentExtent = evt.extent;
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updateFeatureLayerJSON();
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});
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map.on("pan-end",function(evt) {
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_currentExtent = evt.extent;
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updateFeatureLayerJSON();
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});
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}
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/**
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* Load the feature while offline using information stored in database
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*/
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function loadFeatureLayerOffline(callback) {
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offlineEdit.getFeatureLayerJSONDataStore(function(success,dataStore) {
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if(success){
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// Use the feature layer returns from getFeatureDefinition() to reconstitute the layer
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// We don't have to set any other properties on the layer because we are using it
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// in SNAPSHOT mode which downloads all features within the given extent.
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busStopFeatureLayer = new FeatureLayer(JSON.parse(dataStore.featureLayerCollection));
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if(busStopFeatureLayer.url == null){
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busStopFeatureLayer.url = dataStore.featureLayerUrl;
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}
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// Set the graphic symbols to red diamond to make it easy to click on them
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// on a mobile device.
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busStopFeatureLayer.setRenderer(new SimpleRenderer(defaultSymbol));
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map.addLayer(busStopFeatureLayer);
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console.log("Feature has been added back to the map while offline.");
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on(btnGetTiles,"click",downloadTiles);
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on(btnOnlineOffline, 'click', goOnlineOffline);
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setFeatureLayerClickHandler();
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setModalPopupClickListeners();
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map.centerAt(dataStore.centerPt);
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map.setZoom(dataStore.zoom);
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callback(true);
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}
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else{
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alert("There was a problem retrieving feature layer options object. " + dataStore);
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callback(false);
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}
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})
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}
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/**
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* **********************************************
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* FEATURE LAYER MANAGEMENT CODE
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* **********************************************
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*/
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function initOfflineEdits() {
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offlineEdit = new O.esri.Edit.OfflineEditAdvanced();
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// IMPORTANT!!!
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// This tells the database which graphic.attribute property to use as a unique identifier
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// You can look this information up in your feature service directory under the "Fields" category.
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// Example: http://services1.arcgis.com/M8KJPUwAXP8jhtnM/arcgis/rest/services/Denver_Bus_Stops/FeatureServer/0
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offlineEdit.DB_UID = "FID";
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// IMPORTANT!!!
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// A proxy page may be required to upload attachments.
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// If you are using a CORS enabled feature service you can ignore this.
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// If your feature service is not CORS-enabled then you will need to configure this.
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// Refer to "Using the Proxy Page" for more information: https://developers.arcgis.com/en/javascript/jshelp/ags_proxy.html
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offlineEdit.proxyPath = null;
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offlineEdit.on(offlineEdit.events.EDITS_ENQUEUED, updateStatus);
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offlineEdit.on(offlineEdit.events.EDITS_SENT, updateStatus);
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offlineEdit.on(offlineEdit.events.ALL_EDITS_SENT, updateStatus);
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offlineEdit.on(offlineEdit.events.EDITS_SENT_ERROR, editsError);
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}
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function extendFeatureLayer(online,callback){
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var featureLayerJSON = null;
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if(online) {
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// This object contains everything we need to restore the map and feature layer after an offline restart
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//
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// There are two caveats:
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// First, you cannot use the object key 'id'. That's a reserved key for internal offline library use.
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// Second, complex objects need to be serialized or you'll get a database cloning error.
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//
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// We do not want to (re)set this if are offline. We can modify it but we don't want to overwrite it.
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featureLayerJSON = getFeatureLayerJSON();
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}
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// NOTE: if app is offline then we want the dataStore object to be null
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offlineEdit.extend(busStopFeatureLayer,function(result, error) {
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if(result) {
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console.log("OfflineEditAdvanced initialized.");
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// This sets listeners to detect if the app goes online or offline.
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Offline.on('up', goOnline);
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Offline.on('down', goOffline);
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|
|
|
// If the app is online then force OfflineEditAdvanced to its online state
|
|
// This will force the library to check for pending edits and attempt to
|
|
// resend them to the Feature Service.
|
|
if(_isOnline){
|
|
offlineEdit.goOnline(function(result){
|
|
if(!result.success){
|
|
alert("There was a problem when attempting to go back online.");
|
|
}
|
|
else {
|
|
updateStatus();
|
|
}
|
|
});
|
|
}
|
|
else {
|
|
offlineEdit.goOffline();
|
|
updateStatus();
|
|
}
|
|
|
|
callback(true);
|
|
}
|
|
else {
|
|
callback(false);
|
|
alert("Unable to initialize the database. " + error);
|
|
}
|
|
}.bind(this),/* This is the optional offline configuration property */featureLayerJSON);
|
|
}
|
|
|
|
/**
|
|
* Display modal popup when someone clicks on a feature
|
|
*/
|
|
function setFeatureLayerClickHandler() {
|
|
busStopFeatureLayer.on("click", function(evt) {
|
|
currentFeature = evt.graphic;
|
|
showModalPopup(currentFeature);
|
|
var atts = currentFeature.attributes;
|
|
stopID.value = atts.GlobalID;
|
|
stopMainID.value = atts.BSID;
|
|
stopNames.value = atts.STOPNAME;
|
|
stopRoutes.value = atts.ROUTES;
|
|
}.bind(this));
|
|
}
|
|
|
|
function setModalPopupClickListeners() {
|
|
closeBtn.onclick = function(evt) {
|
|
hideModalPopup();
|
|
}
|
|
|
|
saveBtn.onclick = function(evt) {
|
|
|
|
//You may need to uncomment this forced offline check for production use.
|
|
//forceInternalOfflineCheck();
|
|
|
|
popup.graphic.attributes.ROUTES = stopRoutes.value;
|
|
popup.graphic.attributes.STOPNAME = stopNames.value;
|
|
|
|
busStopFeatureLayer.applyEdits(null,[popup.graphic],null,function(result) {
|
|
updateFeatureLayerJSON();
|
|
console.log("Successfully saved changes to: " + popup.graphic.attributes.STOPNAME);
|
|
hideModalPopup();
|
|
},
|
|
function(err){
|
|
alert("There was a problem while trying to save: " + popup.graphic.attributes.STOPNAME);
|
|
})
|
|
}
|
|
|
|
deleteBtn.onclick = function(evt) {
|
|
|
|
// Best practice is to uncomment these for production use
|
|
//forceInternalOfflineCheck();
|
|
|
|
busStopFeatureLayer.applyEdits(null,null,[popup.graphic],function(result) {
|
|
updateFeatureLayerJSON();
|
|
console.log("Successfully deleted: " + popup.graphic.attributes.STOPNAME);
|
|
hideModalPopup();
|
|
},
|
|
function(err) {
|
|
alert("There was a problem while trying to delete: " + popup.graphic.attributes.STOPNAME);
|
|
})
|
|
}
|
|
}
|
|
|
|
function showModalPopup(graphic) {
|
|
popup.graphic = graphic; // assign graphic to popup as a property.
|
|
popup.show();
|
|
}
|
|
|
|
function hideModalPopup() {
|
|
popup.hide();
|
|
}
|
|
|
|
function getFeatureLayerJSON() {
|
|
|
|
return {
|
|
"featureLayerCollection": JSON.stringify(busStopFeatureLayer.toJson()),
|
|
"zoomLevel": map.getZoom(),
|
|
"centerPt" : (map.extent.getCenter()).toJson(),
|
|
"featureLayerUrl": busStopFeatureLayer.url
|
|
}
|
|
}
|
|
|
|
function updateFeatureLayerJSON() {
|
|
var fl = getFeatureLayerJSON();
|
|
busStopFeatureLayer.setFeatureLayerJSONDataStore(fl,function(result,error){
|
|
console.log("updateFeatureLayerJSON - Result: " + result + ", error: " + error);
|
|
})
|
|
}
|
|
|
|
/**
|
|
* ************************************
|
|
* TILE MANAGEMENT CODE
|
|
* ************************************
|
|
*/
|
|
|
|
/**
|
|
* Manually starts the process to download and store tiles
|
|
* in the local database
|
|
*/
|
|
function downloadTiles() {
|
|
tileLayer.deleteAllTiles(function(success,err) {
|
|
if(success == false) {
|
|
alert("There was a problem deleting the tile cache");
|
|
}
|
|
else {
|
|
console.log("success deleting tile cache");
|
|
|
|
if( globalState.downloadState == 'downloading')
|
|
{
|
|
console.log("cancel!");
|
|
_wantToCancel = true;
|
|
btnGetTiles.innerHTML = "cancelling..";
|
|
}
|
|
else
|
|
{
|
|
var zoom = tileLayer.getMinMaxLOD(minZoomAdjust,maxZoomAdjust);
|
|
|
|
var extent = tileLayer.getExtentBuffer(EXTENT_BUFFER,_currentExtent);
|
|
_wantToCancel = false;
|
|
tileLayer.prepareForOffline(zoom.min, zoom.max, extent, reportProgress.bind(this));
|
|
globalState.downloadState = 'downloading';
|
|
}
|
|
}
|
|
}.bind(this))
|
|
}
|
|
|
|
/**
|
|
* Reports the process while downloading tiles.
|
|
*/
|
|
function reportProgress(progress) {
|
|
console.log("downloading tiles...");
|
|
if(progress.hasOwnProperty("countNow")){
|
|
var percent = Math.floor(progress.countNow / progress.countMax * 100);
|
|
btnGetTiles.innerHTML = 'Saving to phone ' + percent + "% - Tap to Cancel";
|
|
}
|
|
|
|
if( progress.finishedDownloading ) {
|
|
btnGetTiles.innerHTML = "Saving to phone 100% - Tap to Cancel";
|
|
updateOfflineUsage();
|
|
updateFeatureLayerJSON();
|
|
|
|
if( progress.cancelRequested ) {
|
|
globalState.downloadState = 'cancelled';
|
|
alert("Tile download was cancelled");
|
|
}
|
|
else {
|
|
globalState.downloadState = 'downloaded';
|
|
alert("Tile download complete");
|
|
}
|
|
|
|
btnGetTiles.innerHTML = '1. Download Tiles';
|
|
}
|
|
return _wantToCancel; //determines if a cancel request has been issued
|
|
}
|
|
|
|
/**
|
|
* ************************************
|
|
* HANDLE GOING ONLINE/OFFLINE
|
|
* ************************************
|
|
*/
|
|
|
|
/**
|
|
* Forces OfflineEditAdvanced to go online.
|
|
* When invoking featureLayer.goOnline() we force library to sync any edits that were
|
|
* stored while offline.
|
|
*/
|
|
function goOnline() {
|
|
console.log("Going online...");
|
|
|
|
loading.style.visibility = "visible";
|
|
|
|
if(busStopFeatureLayer && busStopFeatureLayer.offlineExtended) {
|
|
|
|
}
|
|
|
|
offlineEdit.goOnline(function(success,error) {
|
|
if(error === undefined) {
|
|
setUIOnline();
|
|
console.log("OfflineEditAdvanced is online.");
|
|
}
|
|
else {
|
|
alert("There was a problem syncing offline edits: " + JSON.stringify(error));
|
|
}
|
|
|
|
loading.style.visibility = "hidden";
|
|
});
|
|
|
|
updateOfflineUsage();
|
|
if(typeof tileLayer != "undefined") tileLayer.goOnline();
|
|
}
|
|
|
|
/**
|
|
* Forces OfflineEditAdvanced offline
|
|
*/
|
|
function goOffline() {
|
|
console.log("Going offline...");
|
|
setUIOffline();
|
|
offlineEdit.goOffline();
|
|
if(typeof tileLayer != "undefined") tileLayer.goOffline();
|
|
}
|
|
|
|
/**
|
|
* Toggles offlineEdit online/offline
|
|
*/
|
|
function goOnlineOffline() {
|
|
if(offlineEdit.getOnlineStatus() == offlineEdit.ONLINE){
|
|
goOffline();
|
|
}
|
|
else{
|
|
goOnline();
|
|
}
|
|
}
|
|
|
|
function setUIOnline() {
|
|
btnOnlineOffline.innerHTML = "2. Go Offline";
|
|
imgOfflineIndicator.className = "glyphicon glyphicon-link";
|
|
imgOfflineIndicator.innerHTML = " Up";
|
|
btnState.className = "btn btn-success btn-large floatRight";
|
|
}
|
|
|
|
function setUIOffline() {
|
|
btnOnlineOffline.innerHTML = "2. Go Online";
|
|
imgOfflineIndicator.className = "glyphicon glyphicon-thumbs-down";
|
|
imgOfflineIndicator.innerHTML = " Down";
|
|
btnState.className = "btn btn-danger btn-large floatRight";
|
|
}
|
|
|
|
/**
|
|
* For internal use - detecting amount of storage used and number of tiles stored.
|
|
*/
|
|
function updateOfflineUsage() {
|
|
tileLayer.offline.store.usedSpace(function(result,err){
|
|
if(result != null) {
|
|
console.log( "DB Tile count: " + result.tileCount + ", DB Bytes: " + result.sizeBytes);
|
|
}
|
|
else {
|
|
console.log("DB Tile count: " + count + ", DB Bytes: Error");
|
|
}
|
|
})
|
|
}
|
|
|
|
/**
|
|
* Attempts a manual http request to verify if app is online or offline.
|
|
* Use this in conjunction with the offline checker library: offline.min.js
|
|
* @param callback
|
|
*/
|
|
function validateOnline(callback) {
|
|
var req = new XMLHttpRequest();
|
|
req.open("GET", "http://esri.github.io/offline-editor-js/samples/images/blue-pin.png?" + (Math.floor(Math.random() * 1000000000)), true);
|
|
req.onload = function() {
|
|
if( req.status === 200 && req.responseText !== "") {
|
|
req = null;
|
|
callback(true);
|
|
}
|
|
else {
|
|
console.log("verifyOffline failed");
|
|
req = null;
|
|
callback(false);
|
|
}
|
|
};
|
|
req.onerror = function(e) {
|
|
console.log("appcache-features.html verifyOnline failed: " + e);
|
|
callback(false);
|
|
};
|
|
req.send(null);
|
|
}
|
|
|
|
/**
|
|
* ***********************************************
|
|
* OFFLINE FEATURE MANAGER - EVENT MANAGEMENT CODE
|
|
* ***********************************************å
|
|
*/
|
|
|
|
function editsError(evt) {
|
|
alert("There was a problem. Not all edits were synced with the server. " + JSON.stringify(evt));
|
|
}
|
|
|
|
function updateStatus() {
|
|
|
|
// Depending on application life cycle busStopFeatureLayer may or may not be extended
|
|
// So we have to protect pendingEditsCount() from throwing an "is not a function" error.
|
|
if("pendingEditsCount" in busStopFeatureLayer) {
|
|
busStopFeatureLayer.pendingEditsCount(function(count) {
|
|
pendingEdits.innerHTML = count;
|
|
});
|
|
}
|
|
}
|
|
});
|
|
</script>
|
|
|
|
<!-- Bootstrap core JavaScript
|
|
================================================== -->
|
|
<!-- Placed at the end of the document so the pages load faster -->
|
|
<script src="//code.jquery.com/jquery-2.1.3.min.js"></script>
|
|
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
|
|
</body>
|
|
</html> |