mirror of https://github.com/espruino/BangleApps
33 lines
932 B
JavaScript
33 lines
932 B
JavaScript
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/* Library for 'interface' HTML files that are to
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be used from within BangleApps
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See: README.md / `apps.json`: `interface` element
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This exposes a 'Puck' object like the puck.js library,
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and calls `onInit` when it's ready. `Puck` can be used
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for sending/receiving data to the correctly connected
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device with Puck.eval/write.
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*/
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var __id = 0, __idlookup = [];
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var Puck = {
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eval : function(data,callback) {
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__id++;
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__idlookup[__id] = callback;
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window.postMessage({type:"eval",data:data,id:__id});
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},write : function(data,callback) {
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__id++;
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__idlookup[__id] = callback;
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window.postMessage({type:"write",data:data,id:__id});
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}
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};
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window.addEventListener("message", function(event) {
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var msg = event.data;
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if (msg.type=="init") {
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onInit();
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} else if (msg.type=="evalrsp" || msg.type=="writersp") {
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var cb = __idlookup[msg.id];
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delete __idlookup[msg.id];
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cb(msg.data);
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}
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}, false);
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