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Add offline/online detection #37

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14 changes: 14 additions & 0 deletions app/app.css
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,20 @@ html,body{
color: #fff;
}

#online-offline-pane {
position: absolute;
top: 25px;
height: 35px;
line-height: 35px;
width: 100%;
background-color: white;
text-align: center;
font-size: 17px;
color: white;
transition: all 0.5s ease-in-out;
z-index: 1;
}

.buttons {
color: white;
font-size: 35px;
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45 changes: 44 additions & 1 deletion app/app.js
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@ var way;
var myLocationMarker = null;
var myLocationCircle = null;
var poiData = null;
var wasOnline = false;

function initMap(loc, zoom) {

Expand Down Expand Up @@ -47,6 +48,10 @@ function initMap(loc, zoom) {
var attribution = 'Map data ' + osmAttr + ', Imagery &copy; <a href="http://mapbox.com" target="_blank">Mapbox</a>';

tiles = new L.TileLayer(tileURL, {maxZoom: 18, attribution: attribution, detectRetina: true});

tiles.addEventListener('tileload', goOnline);
tiles.addEventListener('tileerror', goOffline);

map.addLayer(tiles);
map.addLayer(markerlayer);
map.addLayer(waylayer);
Expand Down Expand Up @@ -110,6 +115,8 @@ function loadPOIs(manualRefresh) {
$.getJSON(URL)
.done( function(data) {

goOnline();


//remove loading indicator
$("#loading").css("visibility", "hidden");
Expand Down Expand Up @@ -199,6 +206,10 @@ function loadPOIs(manualRefresh) {
.fail( function(jqxhr, textStatus, error ) {
var err = textStatus + ', ' + error;
console.log( "Request Failed: " + err);

$('#loading').css("visibility", "hidden");

goOffline();
});
}

Expand Down Expand Up @@ -380,9 +391,41 @@ $(function() {
hideInfo();
});


window.addEventListener('online', goOnline);
window.addEventListener('offline', goOffline);
});

function goOnline() {
if (wasOnline === false) {
$("#online-offline-pane").text("You are online.");
$("#online-offline-pane").css("background-color", "green");
animateOnlineOfflinePane();
wasOnline = true;
}
}

function goOffline(display, connectionError) {
wasOnline = false;
$("#online-offline-pane").text("You are having connection problems.");
$("#online-offline-pane").css("background-color", "red");
animateOnlineOfflinePane();
}

function animateOnlineOfflinePane() {
if (typeof timeout1 !== 'undefined' && typeof timeout2 !== 'undefined') {
//Clear previous pane animations to avoid conflicts for repeated animations
window.clearTimeout(timeout1);
window.clearTimeout(timeout2);
}
var timeout1 = window.setTimeout(function() {
$("#online-offline-pane").css("transform", "translateY(35px)");
//Pause of 500 seconds to allow time for background-color to be applied
}, 500);
var timeout2 = window.setTimeout(function() {
$("#online-offline-pane").css("transform", "translateY(3px)");
}, 2500);
}

function locateMe() {
map.locate({setView: true, maxZoom: 16});
mapDragged = false;
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3 changes: 2 additions & 1 deletion index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,8 @@

IS</span>
</div>

<div id="online-offline-pane">
</div>
<div id="loading"><i class="fa fa-spinner fa-spin fa-large"></i> searching for you...</div>
<div id="info_overlay">
<h1>About this project</h1>
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3 changes: 2 additions & 1 deletion index_mobile.html
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Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,8 @@

IS</span>
</div>

<div id="online-offline-pane">
</div>
<div id="loading"><i class="fa fa-spinner fa-spin fa-large"></i> searching for you...</div>
<div id="info_overlay">
<h1>About this project</h1>
Expand Down