mirror of
https://github.com/Esri/offline-editor-js.git
synced 2025-12-15 15:20:05 +00:00
315 lines
12 KiB
HTML
315 lines
12 KiB
HTML
<!DOCTYPE html>
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<html manifest="../manifest.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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<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"/>
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<title>Simple Map</title>
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<link rel="stylesheet" href="http://js.arcgis.com/3.8/js/esri/css/esri.css">
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<style>
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html, body, #map {
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height: 100%;
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width: 100%;
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margin: 0;
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padding: 0;
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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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#button-div1{
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position: relative;
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background: #000000;
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color: #ffffff;
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width: 100%;
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height: 50px;
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}
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.basic-btn{
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background-color: #000000;
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border-color: #ffffff 1px;
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color: #ffffff;
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padding: 8px;
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position: relative; float: left;
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}
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#img-offline-indicator{
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padding: 8px;
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position: relative; float: right;
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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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</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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tiles: locationPath + "/../lib/tiles",
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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="http://jsdev.arcgis.com/o/andygup/appcache1/dojo/dojo.js" data-dojo-config="async: true"></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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<script>
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var map,offlineTileEnabler,baseMapLayer;
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var globalState;
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var _wantToCancel;
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var minZoomAdjust = -1, maxZoomAdjust = 1, mMinZoom, mMaxZoom;
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var imgOfflineIndicator,btnGetTiles,btnOnlineOffline,btnZoom;
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var tiles,appCacheManager,tileInfo;
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var redPinPath = "../samples/images/red-pin.png";
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var bluePinPath = "../samples/images/blue-pin.png"
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var EXTEND_LAYER_COMPLETE_EVENT = "extendLayerComplete";
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var EXTENT_BUFFER = 0; //buffers the map extent in meters
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require(["esri/map","utils/appCacheManager","tiles/offlineTilesEnabler","dojo/on","dojo/domReady!"],
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function(Map,AppCacheManager,OfflineTileEnabler,on) {
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map = new Map("map", {
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basemap: "topo",
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center: [-122.45,37.75], // long, lat
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zoom: 18,
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sliderStyle: "small"
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});
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map.on("load",function(evt){
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init();
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initOfflineTileEnabler();
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console.log("level: " + map.getLevel() + ", maxZoom: " + map.getMaxZoom());
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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 = " + map.getLevel())
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})
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appCacheManager = new AppCacheManager(true,true);
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appCacheManager.on(appCacheManager.CACHE_EVENT,cacheEventHandler);
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appCacheManager.on(appCacheManager.CACHE_ERROR,cacheErrorHandler);
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imgOfflineIndicator = document.getElementById("img-offline-indicator");
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imgOfflineIndicator.offlineColor = "blue";
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btnGetTiles = document.getElementById("btn-get-tiles");
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btnOnlineOffline = document.getElementById("btn-online-offline");
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btnZoom = document.getElementById("btn-zoom-out");
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tileInfo = document.getElementById("tile-info")
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tileInfo.innerHTML = "Tile count: 0\r\nBytes: 0";
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Offline.check();
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Offline.on('up down', updateState );
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map.reposition();
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map.resize();
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}
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function initOfflineTileEnabler(){
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mMaxZoom = map.getMaxZoom();
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mMinZoom = map.getMinZoom();
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offlineTileEnabler = new OfflineTileEnabler();
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baseMapLayer = offlineTileEnabler.getBasemapLayer(map);
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offlineTileEnabler.extend(baseMapLayer,function(success)
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{
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if( success )
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{
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console.log("Offline tile lib is enabled");
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//using null sets this for CORS
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baseMapLayer.offline.proxyPath = null;
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updateOfflineUsage();
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}
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else
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{
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alert("error initializing storage - browser doesn't support indexeddb or websql")
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}
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}.bind(this));
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}
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function cacheEventHandler(evt){
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console.log("CACHE EVENT: " + JSON.stringify(evt));
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}
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function cacheErrorHandler(evt){
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console.log("CACHE ERROR: " + JSON.stringify(evt));
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}
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function updateState(){
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if(Offline.state === 'up'){
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imgOfflineIndicator.src = bluePinPath;
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tiles.goOnline();
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}
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else{
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imgOfflineIndicator.src = redPinPath;
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tiles.goOffline();
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}
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}
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function updateOfflineUsage()
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{
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var count = getEstimateTileCount(function(info){
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console.log("COUNT " + info)
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tileInfo.innerHTML = "Tile count: " + info.tileCount + "\r\nBytes: " + info.sizeBytes;
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});
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}
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/**
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* Gets tile count and size estimates. Not perfect.
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* @param callback
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*/
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function getEstimateTileCount(callback)
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{
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var extent = baseMapLayer.getExtentBuffer(EXTENT_BUFFER,map.extent);
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var level = map.getLevel();
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var url = baseMapLayer.getTileUrlsByExtent(extent,level)[0];
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baseMapLayer._lastTileUrl = url;
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baseMapLayer.estimateTileSize(function(tileSize){
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var totalEstimation = {tileCount:0,sizeBytes:0};
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var min = map.getLevel() + minZoomAdjust;
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var max = map.getLevel() + maxZoomAdjust;
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var maxZoom = Math.min(mMaxZoom, max); //prevent errors by setting the tile layer floor
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var minZoom = Math.max(mMinZoom, min); //prevent errors by setting the tile layer ceiling
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for(var level = minZoom; level<= maxZoom; level++)
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{
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var levelEstimation = baseMapLayer.getLevelEstimation(this.getExtentBuffer(EXTENT_BUFFER,map.extent),level,tileSize);
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totalEstimation.tileCount += levelEstimation.tileCount;
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totalEstimation.sizeBytes += levelEstimation.sizeBytes;
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}
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console.log("Size estimate: " + totalEstimation.sizeBytes + ", tile count: " + totalEstimation.tileCount)
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callback(totalEstimation);
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}.bind(this))
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}
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}
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);
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function saveTilesLocally(evt){
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var self = evt.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 minLevel = map.getLevel() + minZoomAdjust;
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var maxLevel = map.getLevel() + maxZoomAdjust;
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var extent = offlineTileEnabler.getExtentBuffer(this.EXTENT_BUFFER);
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_wantToCancel = false;
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baseMapLayer.prepareForOffline(minLevel, maxLevel, extent, lang.hitch(this,reportProgress));
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globalState.downloadState = 'downloading';
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}
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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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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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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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function downloadTiles(){
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baseMapLayer.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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saveTilesLocally(this);
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}
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}.bind(this))
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}
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function goOnlineOffline(){
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if(imgOfflineIndicator.offlineColor == "blue"){
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btnOnlineOffline.innerHTML = "2. Go Online";
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imgOfflineIndicator.src = redPinPath;
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imgOfflineIndicator.offlineColor = "red";
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goOffline();
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}
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else{
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btnOnlineOffline.innerHTML = "2. Go Offline";
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imgOfflineIndicator.src = bluePinPath;
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imgOfflineIndicator.offlineColor = "blue";
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goOnline();
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}
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}
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function goOnline()
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{
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baseMapLayer.goOnline();
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}
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function goOffline()
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{
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baseMapLayer.goOffline();
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}
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function panLeft(){
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map.panLeft();
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}
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</script>
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</head>
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<body>
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<div id="button-div1">
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<img id="img-offline-indicator" onclick="goOnlineOffline()" src="../samples/images/blue-pin.png"/>
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<textarea contenteditable="false" id="tile-info"></textarea>
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<button class="basic-btn" id="btn-get-tiles" onclick="downloadTiles()">1. Download Tiles</button>
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<button class="basic-btn" onclick="goOnlineOffline()" id="btn-online-offline">2. Go Offline</button>
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<button class="basic-btn" id="btn-zoom-out" onclick="panLeft()">3. Pan left</button>
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</div>
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<div id="map"></div>
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</body>
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</html> |