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BangleApps
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recorder: cache downloaded tracks 

to allow a user to save as GPX, then instantly as CSV, rather than
waiting to download the same data again.
master
Rob Pilling 2024-10-08 20:38:44 +01:00
parent 0dbdaad3b8
commit 620fb0769d
1 changed files with 15 additions and 4 deletions
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17
apps/recorder/interface.html
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@ -11,6 +11,7 @@
<script src="../../core/js/utils.js"></script> <script src="../../core/js/utils.js"></script>
<script> <script>
var domTracks = document.getElementById("tracks"); var domTracks = document.getElementById("tracks");
var fileCache = new Map();
function filterGPSCoordinates(track) { function filterGPSCoordinates(track) {
// only include data points with GPS values // only include data points with GPS values
@ -153,15 +154,25 @@ function trackLineToObject(headers, l) {
} }
function downloadTrack(filename, callback) { function downloadTrack(filename, callback) {
Util.showModal(`Downloading ${filename}...`); function onData(data) {
Util.readStorageFile(filename,data=>{
Util.hideModal();
var lines = data.trim().split("\n"); var lines = data.trim().split("\n");
var headers = lines.shift().split(","); var headers = lines.shift().split(",");
var track = lines.map(l=>trackLineToObject(headers, l)); var track = lines.map(l=>trackLineToObject(headers, l));
callback(track); callback(track);
}
const data = fileCache.get(filename);
if (data) {
onData(data);
} else {
Util.showModal(`Downloading ${filename}...`);
Util.readStorageFile(filename, data => {
fileCache.set(filename, data);
onData(data);
Util.hideModal();
}); });
} }
}
function downloadAll(trackList, cb) { function downloadAll(trackList, cb) {
const tracks = trackList.slice(); const tracks = trackList.slice();