37 lines
1.1 KiB
JavaScript
37 lines
1.1 KiB
JavaScript
var PropertyChangeListenerObjects = {
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_ws: null,
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_listeners: new Array()
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};
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var PropertyChangeListener = function( callback ) {
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PropertyChangeListenerObjects._ws = new WebSocket('ws://' + location.host + '/PropertyListener');
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PropertyChangeListenerObjects._ws.onopen = callback;
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PropertyChangeListenerObjects._ws.onclose = function(ev) {
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console.log("websocket closed");
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PropertyChangeListenerObjects._ws = null;
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};
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PropertyChangeListenerObjects._ws.onmessage = function(ev) {
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// console.log("websocket message:" + ev.data);
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try {
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var node = JSON.parse(ev.data);
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var cb = PropertyChangeListenerObjects._listeners[node.path];
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for( var i = 0; i < cb.length; i++ )
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cb[i](node);
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} catch (e) {
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}
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};
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};
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var SetListener = function( path, callback ) {
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var o = PropertyChangeListenerObjects._listeners[path];
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if (typeof (o) == 'undefined') {
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o = new Array();
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PropertyChangeListenerObjects._listeners[path] = o;
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PropertyChangeListenerObjects._ws.send(JSON.stringify({
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command : 'addListener',
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node : path
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}));
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}
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o.push(callback);
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};
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