132 lines
2.8 KiB
JavaScript
132 lines
2.8 KiB
JavaScript
var StairsViewModel = function()
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{
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var self = this;
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self.mode = ko.observable('Static');
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self.static =
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{
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brightness: ko.observable(0)
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};
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self.custom =
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{
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brightness: ko.observableArray([])
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};
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self.alternate =
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{
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interval: ko.observable(500),
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brightness: ko.observable(0)
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}
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self.slide =
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{
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interval: ko.observable(500),
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brightness: ko.observable(4096),
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direction: ko.observable(0),
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fadeOutTime: ko.observable(0)
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}
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self.loading = ko.observable(true);
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self.updatingFromServer = false;
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self.autoSetTimeout = null;
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self.autoSetMode = ko.computed(function()
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{
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if (self.loading()) return;
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var url = '/setMode/' + encodeURIComponent(self.mode());
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switch (self.mode())
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{
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case 'Static':
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url += '?brightness=' + encodeURIComponent(self.static.brightness());
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break;
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case 'Custom':
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url += '?brightness=' + encodeURIComponent(self.custom.brightness().map(function(value) { return value(); }).join());
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break;
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case 'Alternate':
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url += '?interval=' + encodeURIComponent(self.alternate.interval()) +
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'&brightness=' + encodeURIComponent(self.alternate.brightness());
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break;
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case 'Slide':
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url += '?interval=' + encodeURIComponent(self.slide.interval()) +
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'&brightness=' + encodeURIComponent(self.slide.brightness()) +
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'&direction=' + encodeURIComponent(self.slide.direction()) +
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'&fadeOutTime=' + encodeURIComponent(self.slide.fadeOutTime());
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break;
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}
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// Exit after checking all the parameters, so the observers
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// are properly subscribed
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if (self.updatingFromServer) return;
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if (self.autoSetTimeout !== null)
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{
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clearTimeout(self.autoSetTimeout);
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self.autoSetTimeout = null;
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}
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self.autoSetTimeout = setTimeout(function()
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{
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// TODO retry on failure
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$.ajax(
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{
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url: url,
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dataType: 'json',
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cache: false
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});
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clearTimeout(self.autoSetTimeout);
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self.autoSetTimeout = null;
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}, 200);
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return true;
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});
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self.ping = function()
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{
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self.loading(true);
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$.ajax(
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{
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url: '/ping',
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dataType: 'json',
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cache: false
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})
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.done(function(data)
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{
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self.updatingFromServer = true;
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// Initialize the 'Custom' values based on the step count
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var values = [];
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for (var index = 0; index < data.stepCount; index++)
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values.push(ko.observable(0));
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self.custom.brightness(values);
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self.loading(false);
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self.updatingFromServer = false;
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})
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.fail(function()
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{
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setTimeout(self.ping, 1000);
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});
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};
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};
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$(function()
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{
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var viewModel = new StairsViewModel();
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ko.applyBindings(viewModel);
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viewModel.ping();
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}); |