Changed tweets, added eca

devjan_static/lib/charts.js

@@ -0,0 +1,78 @@
+(function($, block) {
+
+// a simple rolling chart with memory
+block.fn.rolling_chart = function(config) {
+    var options = $.extend({
+        memory: 100,
+        series: { serie : {label:"serie", color:'black'} }
+    }, config);
+
+    var handle_data = function(values) {
+        var result = [];
+
+        for(var i in values) {
+            result.push([i, values[i]]);
+        }
+        return result;
+    };
+
+    var xo = { series: {
+            lines: { show: true },
+            points: {
+                radius: 3,
+                show: true,
+                fill: true
+            }
+        }};
+
+    var plot = $.plot(this.$element, [] , {});
+
+    var reset = function() {
+        var result = options.series;
+	for(var k in result) {
+	    if (result.hasOwnProperty(k)) {
+	        result[k].databuffer = [];
+	    }
+	}
+	return result;
+    }
+
+    var plot_series = reset();
+
+    var add_to_serie = function(skey,value) {
+	var databuffer = plot_series[skey].databuffer;
+        if(databuffer.length > options.memory) {
+            plot_series[skey].databuffer = databuffer.slice(1);
+        }
+	databuffer.push(value);
+    }
+
+    var redraw = function(serie_value) {
+    	    var plot_current = [];
+	    var mykeys = Object.keys(plot_series);
+	    for(var mykey in mykeys) {
+		var skey = mykeys[mykey];
+		var serie = plot_series[skey];
+		// serie['databuffer'].push(serie_value[skey]);
+		add_to_serie(skey,serie_value[skey]);
+		serie['data'] = handle_data(serie['databuffer']);
+		plot_current.push(serie);
+	    }
+            plot.setData(plot_current);
+            plot.setupGrid();
+            plot.draw();
+        }
+
+    this.actions({
+        'add': function(e, message) {
+	    redraw(message.value);
+        },
+        'reset': function(e, message) {
+	    plot_series = reset();
+	}
+    });
+    // return element to allow further work
+    return this.$element;
+}
+
+})(jQuery, block);