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Adding defaults and geolocation

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Will Bradley 2013-07-28 04:07:10 -04:00
parent 4e247d3563
commit 57d1d2a1e0
1 changed files with 72 additions and 26 deletions
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98
index.html
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@ -33,12 +33,12 @@
<input type="text" id="q" name="q" value="Phoenix" /><input type="submit" /> <input type="text" id="q" name="q" value="Phoenix" /><input type="submit" />
</form> </form>
<div id="map"></div> <div id="map"></div>
<ul id="results"> <ul id="results"></ul>
<h3>Results</h3>
</ul>
<script type="text/javascript"> <script type="text/javascript">
var map = L.map('map').setView([51.505, -0.09], 13);
var query = "";
var map = L.map('map'); //.setView([51.505, -0.09], 13);
L.tileLayer('http://{s}.tile.cloudmade.com/4be2d4a8b7ae4a5e8ebc0558bb5d7db4/997/256/{z}/{x}/{y}.png', { L.tileLayer('http://{s}.tile.cloudmade.com/4be2d4a8b7ae4a5e8ebc0558bb5d7db4/997/256/{z}/{x}/{y}.png', {
attribution: 'Map data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery &copy; <a href="http://cloudmade.com">CloudMade</a>', attribution: 'Map data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery &copy; <a href="http://cloudmade.com">CloudMade</a>',
maxZoom: 18 maxZoom: 18
@ -54,23 +54,40 @@
} }
// decode query param // decode query param
var query = decodeURIComponent(params["q"]).replace(/\+/g, ' ') if(params["q"] && params["q"].length > 0){
console.log(query) handleQuery(decodeURIComponent(params["q"]).replace(/\+/g, ' '));
}
else
{
if (navigator.geolocation)
{
navigator.geolocation.getCurrentPosition(function(pos){
map.setView([pos.coords.latitude,pos.coords.longitude],10);
// AJAX request for checking where we are
reverseLookup(pos.coords.latitude,pos.coords.longitude,10,function(xmlhttp) {
// Decode response as JSON
response = JSON.parse(xmlhttp.responseText);
// set search textbox to query if(response.length > 0){
if(query && query.length > 0) { console.log(response);
document.getElementById("q").value = query }
});
},function(error){
console.log(error);
updateMap("Tempe, Arizona",[[33.6569,-111.6801],[33.3133,-112.3276]])
});
}
else {
updateMap("Tempe, Arizona",[[33.6569,-111.6801],[33.3133,-112.3276]])
}
} }
// AJAX request for geolocation of query function handleQuery(query){
xmlhttp=new XMLHttpRequest(); window.query = query;
xmlhttp.open("GET","http://nominatim.openstreetmap.org/search/"+encodeURIComponent(query)+"?format=json",true); // AJAX request for geolocation of query
xmlhttp.send(); forwardLookup(query,function(xmlhttp) {
xmlhttp.onreadystatechange=function() { // Decode response as JSON
if (xmlhttp.readyState==4 && xmlhttp.status==200) {
// Decode response as JSON and
response = JSON.parse(xmlhttp.responseText); response = JSON.parse(xmlhttp.responseText);
console.log(response);
if(response.length > 0){ if(response.length > 0){
// Display all results in sidebar // Display all results in sidebar
@ -82,11 +99,34 @@
showItem(0); showItem(0);
} }
else { else {
appendToResults("No Results"); appendToResults("No Results");
} }
} });
}
}
function forwardLookup(query,callback){
xmlhttp=new XMLHttpRequest();
xmlhttp.open("GET","http://nominatim.openstreetmap.org/search/"+encodeURIComponent(query)+"?format=json",true);
xmlhttp.send();
xmlhttp.onreadystatechange = function(){
if (xmlhttp.readyState==4 && xmlhttp.status==200) {
callback(xmlhttp);
}
};
}
function reverseLookup(lat,long,zoom,callback){
xmlhttp=new XMLHttpRequest();
xmlhttp.open("GET","http://nominatim.openstreetmap.org/reverse?format=json&lat="+encodeURIComponent(lat)+"&lon="+encodeURIComponent(lat)+"&zoom="+encodeURIComponent(zoom),true);
xmlhttp.send();
xmlhttp.onreadystatechange = function(){
if (xmlhttp.readyState==4 && xmlhttp.status==200) {
callback();
}
};
}
function appendToResults(index,name){ function appendToResults(index,name){
var item = document.createElement("li"); var item = document.createElement("li");
item.innerHTML = "<span onclick=\"showItem('"+index+"');\">"+name+'</span>'; item.innerHTML = "<span onclick=\"showItem('"+index+"');\">"+name+'</span>';
@ -103,13 +143,19 @@
} }
document.getElementById("result_"+index).className = "active_result"; document.getElementById("result_"+index).className = "active_result";
// Change map to show this item // Update the map
map.fitBounds([ updateMap(query,[[response[index].boundingbox[0], response[index].boundingbox[2]],
[response[index].boundingbox[0], response[index].boundingbox[2]], [response[index].boundingbox[1], response[index].boundingbox[3]]]);
[response[index].boundingbox[1], response[index].boundingbox[3]]
]);
} }
function updateMap(query,bounds){
// Set search textbox to query
document.getElementById("q").value = query;
// Fit map to the GPS boundaries
map.fitBounds(bounds);
};
</script> </script>
</body> </body>