mirror of
https://github.com/Esri/offline-editor-js.git
synced 2025-12-15 15:20:05 +00:00
429 lines
18 KiB
HTML
429 lines
18 KiB
HTML
<!DOCTYPE html>
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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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<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 tiles locally.
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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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one it is offline.
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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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Use the included Grunt task 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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-->
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<title>Cache Tiles</title>
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<!-- Bootstrap core CSS -->
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<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css" rel="stylesheet">
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<link rel="stylesheet" href="//js.arcgis.com/3.14/dijit/themes/tundra/tundra.css">
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<link rel="stylesheet" href="http://js.arcgis.com/3.14/esri/css/esri.css">
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<link rel="stylesheet" type="text/css" href="http://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: 500px;
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max-height: 1000px;
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}
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body {
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background-color: #FFF;
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overflow: hidden;
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font-family: "Trebuchet MS";
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}
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#tile-info{
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background-color: #000000;
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color: white;
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padding: 8px;
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position: relative; float: right;
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}
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.floatRight { float: right;}
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.container { padding: 20px;}
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.span-dbsize {color: blue; padding-left: 1em;}
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</style>
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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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<!--}-->
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<!--}-->
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<!--</script>-->
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<!-- This is a custom build of the ArcGIS API for JavaScript using the new Web Optimizer Tool -->
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<!--<script src="../samples/jsolib/dojo.js" data-dojo-config="async: true"></script>-->
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<script src="http://js.arcgis.com/3.14/"></script>
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<!-- Use this tag below if you are hosting your ArcGIS API for JavaScript files locally -->
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<!--<script src="libs/dojo/dojo/dojo.js" data-dojo-config="async: true"></script>-->
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<script src="../vendor/IndexedDBShim/dist/IndexedDBShim.min.js"></script>
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<script src="../vendor/offline/offline.min.js"></script>
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<script>
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Offline.options = {
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checks: {
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image: {
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url: function() {
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return 'http://esri.github.io/offline-editor-js/tiny-image.png?_=' + (Math.floor(Math.random() * 1000000000));
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}
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},
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active: 'image'
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}
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}
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</script>
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</head>
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<body class="tundra">
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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-success" id="btn-get-tiles">1. Download Tiles</button>
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<button class="btn btn-success" disabled id="btn-online-offline">2. Go Offline</button>
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<button class="btn btn-success" disabled id="btn-pan-left">3. Pan left</button>
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</div>
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<span class="span-dbsize">Database Size (MBs) <span id="span-dbsize-value" class="badge">0</span></span>
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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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<script>
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require([
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"esri/map",
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"dojo/on",
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"esri/IdentityManager",
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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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"dojo/domReady!"],
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function(Map,on,esriId,BootstrapMap) {
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var map;
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var tileLayer = null;
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var zoom = 18;
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var globalState = {};
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var _wantToCancel;
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var _isOnline = true;
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var minZoomAdjust = -1, maxZoomAdjust = 1;
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var tiles;
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var EXTENT_BUFFER = 0; //buffers the map extent in meters
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var dbsize = document.getElementById("span-dbsize-value");
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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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var imgOfflineIndicator = document.getElementById("state-span");
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var btnState = document.getElementById("btn-state");
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var btnPanLeft = document.getElementById("btn-pan-left");
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Offline.check();
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Offline.on('up down', updateState );
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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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verifyOnline(function(result){ console.log("VERIFY ONLINE " + result)
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result == true ? _isOnline = true : _isOnline = false;
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startMap();
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});
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function startMap(){
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//Make sure map shows up after a browser refresh
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Offline.state === 'up' ? zoom = 18 : zoom = 17;
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map = BootstrapMap.create("mapDiv", {
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center: [-104.9622,39.6783], // long, lat
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zoom: 19,
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sliderStyle: "small"
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});
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//
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//tileLayer = O.esri.Tiles.OfflineTileEnablerLayer("http://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer",function(evt){
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tileLayer = O.esri.Tiles.OfflineTileEnablerLayer("http://tiles.arcgis.com/tiles/M8KJPUwAXP8jhtnM/arcgis/rest/services/DenverUniv/MapServer",function(evt){
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console.log("Offline tile lib is enabled. Application state is: " + Offline.state);
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},_isOnline);
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tileLayer.showBlankTiles = true; // if you don't want to see blank tile indicator images
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tileLayer.offline.proxyPath = null;
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map.on("load",function(evt){
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init();
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Offline.check();
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//using null sets this for CORS
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tileLayer.offline.proxyPath = null;
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on(btnOnlineOffline,"click",goOnlineOffline);
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on(btnGetTiles,"click",downloadTiles);
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on(btnPanLeft,"click",panLeft);
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updateOfflineUsage();
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console.log("level: " + tileLayer.getLevel());
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})
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map.addLayer(tileLayer);
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}
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function init(){
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map.on("extent-change",function(evt){
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updateOfflineUsage();
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console.log("Zoom level = " + tileLayer.getLevel());
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tileLayer.estimateTileSize(function(size) {
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console.log("SIZE: " + size);
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var estimation = tileLayer.getLevelEstimation(map.extent,17,size);
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console.log("LEVEL: " + estimation);
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});
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});
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map.reposition();
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map.resize();
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}
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function updateOfflineUsage()
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{
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tileLayer.offline.store.usedSpace(function(result,err){
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if(result != null){
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var mb = (result.sizeBytes >>> 20 ) + '.' + ( result.sizeBytes & (2*0x3FF ) );
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dbsize.innerHTML = mb;
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}
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else{
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dbsize.innerHTML = "??";
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}
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})
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}
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function updateState(){
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if(Offline.state === 'up'){
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updateOfflineUsage();
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toggleStateUp(true);
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if(typeof tileLayer != "undefined") tileLayer.goOnline();
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}
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else{
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toggleStateUp(false);
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if(typeof tileLayer != "undefined") tileLayer.goOffline();
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}
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}
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function toggleStateUp(state){
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if(state){
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btnOnlineOffline.innerHTML = "2. Go Offline";
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tileLayer.goOnline();
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imgOfflineIndicator.className = "glyphicon glyphicon-link";
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imgOfflineIndicator.innerHTML = " Up";
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btnState.className = "btn btn-success btn-large floatRight";
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}
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else{
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btnOnlineOffline.innerHTML = "2. Go Online";
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tileLayer.goOffline();
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imgOfflineIndicator.className = "glyphicon glyphicon-thumbs-down";
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imgOfflineIndicator.innerHTML = " Down";
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btnState.className = "btn btn-danger btn-large floatRight";
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}
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}
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/**
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* Forces offlineTileEnabler to go online or offline.
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* If it is offline it will try to find a tile in the local database.
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*/
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function goOnlineOffline(){
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btnPanLeft.disabled = false;
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if(btnOnlineOffline.innerHTML == "2. Go Offline"){
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toggleStateUp(false);
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console.log("Map is offline");
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}
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else{
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toggleStateUp(true);
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console.log("Map is online");
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}
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}
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/**
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* Manually starts the process to download and store tiles
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* in the local database
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*/
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function downloadTiles(){
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tileLayer.deleteAllTiles(function(success,err){
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if(success == false){
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alert("There was a problem deleting the tile cache");
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}
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else{
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console.log("success deleting tile cache");
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var self = this.data;
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if( globalState.downloadState == 'downloading')
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{
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console.log("cancel!");
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_wantToCancel = true;
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btnGetTiles.innerHTML = "cancelling..";
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}
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else
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{
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var zoom = tileLayer.getMinMaxLOD(minZoomAdjust,maxZoomAdjust);
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var extent = tileLayer.getExtentBuffer(EXTENT_BUFFER,map.extent);
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_wantToCancel = false;
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tileLayer.prepareForOffline(zoom.min, zoom.max, extent, reportProgress.bind(this));
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globalState.downloadState = 'downloading';
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}
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}
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}.bind(this))
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}
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/**
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* Reports the process while downloading tiles.
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*/
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function reportProgress(progress)
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{
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console.log("downloading tiles...");
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if(progress.hasOwnProperty("countNow")){
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var percent = Math.floor(progress.countNow / progress.countMax * 100);
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btnGetTiles.innerHTML = 'Saving to phone ' + percent + "% - Tap to Cancel";
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}
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if( progress.finishedDownloading )
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{
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btnGetTiles.innerHTML = "Saving to phone 100% - Tap to Cancel";
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updateOfflineUsage();
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if( progress.cancelRequested )
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{
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globalState.downloadState = 'cancelled';
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alert("Tile download was cancelled");
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}
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else
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{
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globalState.downloadState = 'downloaded';
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btnOnlineOffline.disabled = false;
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alert("Tile download complete");
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}
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btnGetTiles.innerHTML = '1. Download Tiles';
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}
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return _wantToCancel; //determines if a cancel request has been issued
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}
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/**
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* Attempts an http request to verify if app is online or offline.
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* Use this in conjunction with the offline checker library: offline.min.js
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* @param callback
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*/
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function verifyOnline(callback){
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var req = new XMLHttpRequest();
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req.open("GET", "images/blue-pin.png?" + (Math.floor(Math.random() * 1000000000)), true);
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req.onload = function()
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{
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if( req.status === 200 && req.responseText !== "")
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{
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callback(true);
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}
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else
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{
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console.log("verifyOffline failed");
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callback(false);
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}
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};
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req.onerror = function(e)
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{
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console.log("verifyOffline failed: " + e);
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callback(false);
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};
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req.send(null);
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}
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function panLeft(){
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map.panLeft();
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}
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}
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);
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</script>
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<!-- Bootstrap core JavaScript
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================================================== -->
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<!-- Placed at the end of the document so the pages load faster -->
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<script src="//code.jquery.com/jquery-2.1.3.min.js"></script>
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<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
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</body>
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</html> |