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Load history when the map is initialized.

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This can take a few seconds, so add a loading spinny while it loads.

(cherry picked from commit 8d3fdcc1625278a25a289dee33ef6b8eaccfd0ff)
This commit is contained in:
Oliver Jowett 2015-01-15 21:01:14 +00:00
parent 1db63ebc65
commit 6458cfd2fe
4 changed files with 148 additions and 54 deletions
public_html
script.js

184
public_html/script.js
View file

@ -41,6 +41,48 @@ var MessageCountHistory = [];
var NBSP='\u00a0';
var DEGREES='\u00b0'
function processReceiverUpdate(data) {
// Loop through all the planes in the data packet
var now = data.now;
var acs = data.aircraft;
// Detect stats reset
if (MessageCountHistory.length > 0 && MessageCountHistory[MessageCountHistory.length-1].messages > data.messages) {
MessageCountHistory = [{'time' : MessageCountHistory[MessageCountHistory.length-1].time,
'messages' : 0}];
}
// Note the message count in the history
MessageCountHistory.push({ 'time' : now, 'messages' : data.messages});
// .. and clean up any old values
if ((now - MessageCountHistory[0].time) > 30)
MessageCountHistory.shift();
for (var j=0; j < acs.length; j++) {
var ac = acs[j];
var hex = ac.hex;
var plane = null;
// Do we already have this plane object in Planes?
// If not make it.
if (Planes[hex]) {
plane = Planes[hex];
} else {
plane = new PlaneObject(hex);
plane.tr = PlaneRowTemplate.cloneNode(true);
plane.tr.cells[0].textContent = hex; // this won't change
plane.tr.addEventListener('click', selectPlaneByHex.bind(undefined,hex));
Planes[hex] = plane;
PlanesOrdered.push(plane);
}
// Call the function update
plane.updateData(now, ac);
}
}
function fetchData() {
if (FetchPending !== null && FetchPending.state() == 'pending') {
// don't double up on fetches, let the last one resolve
@ -52,45 +94,9 @@ function fetchData() {
cache: false,
dataType: 'json' });
FetchPending.done(function(data) {
// Loop through all the planes in the data packet
var now = data.now;
var acs = data.aircraft;
// Detect stats reset
if (MessageCountHistory.length > 0 && MessageCountHistory[MessageCountHistory.length-1].messages > data.messages) {
MessageCountHistory = [{'time' : MessageCountHistory[MessageCountHistory.length-1].time,
'messages' : 0}];
}
// Note the message count in the history
MessageCountHistory.push({ 'time' : now, 'messages' : data.messages});
// .. and clean up any old values
if ((now - MessageCountHistory[0].time) > 30)
MessageCountHistory.shift();
for (var j=0; j < acs.length; j++) {
var ac = acs[j];
var hex = ac.hex;
var plane = null;
// Do we already have this plane object in Planes?
// If not make it.
if (Planes[hex]) {
plane = Planes[hex];
} else {
plane = new PlaneObject(hex);
plane.tr = PlaneRowTemplate.cloneNode(true);
plane.tr.cells[0].textContent = hex; // this won't change
plane.tr.addEventListener('click', selectPlaneByHex.bind(undefined,hex));
Planes[hex] = plane;
PlanesOrdered.push(plane);
}
// Call the function update
plane.updateData(now, ac);
}
processReceiverUpdate(data);
// update timestamps, visibility, history track for all planes - not only those updated
for (var i = 0; i < PlanesOrdered.length; ++i) {
@ -126,6 +132,7 @@ function fetchData() {
});
}
var PositionHistorySize = 0;
function initialize() {
PlaneRowTemplate = document.getElementById("plane_row_template");
@ -173,12 +180,102 @@ function initialize() {
Dump1090Version = data.version;
RefreshInterval = data.refresh;
PositionHistorySize = data.history;
})
.always(initialize_after_config);
.always(function() {
initialize_map();
start_load_history();
});
}
var CurrentHistoryFetch = null;
var PositionHistoryBuffer = []
function start_load_history() {
if (PositionHistorySize > 0) {
console.log("Starting to load history");
$("#loader").removeClass("hidden");
load_history_item(0);
} else {
endLoadHistory();
}
}
function load_history_item(i) {
if (i >= PositionHistorySize) {
end_load_history();
return;
}
console.log("Loading history #" + i);
$.ajax({ url: 'data/history_' + i + '.json',
timeout: 5000,
cache: false,
dataType: 'json' })
.done(function(data) {
PositionHistoryBuffer.push(data);
load_history_item(i+1);
})
.fail(function(jqxhr, status, error) {
// No more history
end_load_history();
});
}
function end_load_history() {
$("#loader").addClass("hidden");
console.log("Done loading history");
if (PositionHistoryBuffer.length > 0) {
var now, last=0;
// Sort history by timestamp
console.log("Sorting history");
PositionHistoryBuffer.sort(function(x,y) { return (x.now - y.now); });
// Process history
for (var h = 0; h < PositionHistoryBuffer.length; ++h) {
now = PositionHistoryBuffer[h].now;
console.log("Applying history " + h + "/" + PositionHistoryBuffer.length + " at: " + now);
processReceiverUpdate(PositionHistoryBuffer[h]);
// update track
console.log("Updating tracks at: " + now);
for (var i = 0; i < PlanesOrdered.length; ++i) {
var plane = PlanesOrdered[i];
plane.updateTrack((now - last) + 1);
}
last = now;
}
// Final pass to update all planes to their latest state
console.log("Final history cleanup pass");
for (var i = 0; i < PlanesOrdered.length; ++i) {
var plane = PlanesOrdered[i];
plane.updateTick(now);
}
}
PositionHistoryBuffer = null;
console.log("Completing init");
refreshTableInfo();
refreshSelected();
reaper();
// Setup our timer to poll from the server.
window.setInterval(fetchData, RefreshInterval);
window.setInterval(reaper, 60000);
}
// Initalizes the map and starts up our timers to call various functions
function initialize_after_config() {
function initialize_map() {
// Load stored map settings if present
CenterLat = Number(localStorage['CenterLat']) || DefaultCenterLat;
CenterLon = Number(localStorage['CenterLon']) || DefaultCenterLon;
@ -329,15 +426,6 @@ function initialize_after_config() {
}
}
}
// These will run after page is complitely loaded
$(window).load(function() {
$('#dialog-modal').css('display', 'inline'); // Show hidden settings-windows content
});
// Setup our timer to poll from the server.
window.setInterval(fetchData, RefreshInterval);
window.setInterval(reaper, 60000);
}
// This looks for planes to reap out of the master Planes variable