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trying to make the code more robust to things like watchPosition erroring out when enableHighAccuracy is set to true.

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This commit is contained in:
Danny Yoo 2011-09-26 15:11:38 -04:00
parent 1635c0a5d2
commit f189201ee0
1 changed files with 10 additions and 1 deletions
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11
web-world/js-impl.js
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@ -949,6 +949,7 @@
LocationEventSource.prototype = plt.baselib.heir(EventSource.prototype);
LocationEventSource.prototype.onStart = function(fireEvent) {
var that = this;
if (this.id === undefined) {
var success = function(position) {
if (position.hasOwnProperty &&
@ -961,6 +962,14 @@
'longitude' : Number(position.coords.longitude) }));
}
};
// If we fail while trying to watch the position
// using high accuracy, switch over to the coarse one.
var onFailSwitchoverToCoerse = function() {
navigator.geolocation.clearWatch(that.id);
that.id = navigator.geolocation.watchPosition(
success,
fail);
};
var fail = function(err) {
// Quiet failure
};
@ -968,7 +977,7 @@
navigator.geolocation.getCurrentPosition(success, fail);
this.id = navigator.geolocation.watchPosition(
success,
fail,
onFailSwitchoverToCoerse,
{ enableHighAccuracy : true });
}
}