Current state

public/assets/plugins/charts-rickshaw/src/js/Rickshaw.Series.FixedDuration.js

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+Rickshaw.namespace('Rickshaw.Series.FixedDuration');
+
+Rickshaw.Series.FixedDuration = Rickshaw.Class.create(Rickshaw.Series, {
+
+	initialize: function (data, palette, options) {
+
+		options = options || {};
+
+		if (typeof(options.timeInterval) === 'undefined') {
+			throw new Error('FixedDuration series requires timeInterval');
+		}
+
+		if (typeof(options.maxDataPoints) === 'undefined') {
+			throw new Error('FixedDuration series requires maxDataPoints');
+		}
+
+		this.palette = new Rickshaw.Color.Palette(palette);
+		this.timeBase = typeof(options.timeBase) === 'undefined' ? Math.floor(new Date().getTime() / 1000) : options.timeBase;
+		this.setTimeInterval(options.timeInterval);
+
+		if (this[0] && this[0].data && this[0].data.length) {
+			this.currentSize = this[0].data.length;
+			this.currentIndex = this[0].data.length;
+		} else {
+			this.currentSize  = 0;
+			this.currentIndex = 0;
+		}
+
+		this.maxDataPoints = options.maxDataPoints;
+
+
+		if (data && (typeof(data) == "object") && Array.isArray(data)) {
+			data.forEach( function (item) { this.addItem(item) }, this );
+			this.currentSize  += 1;
+			this.currentIndex += 1;
+		}
+
+		// reset timeBase for zero-filled values if needed
+		this.timeBase -= (this.maxDataPoints - this.currentSize) * this.timeInterval;
+
+		// zero-fill up to maxDataPoints size if we don't have that much data yet
+		if ((typeof(this.maxDataPoints) !== 'undefined') && (this.currentSize < this.maxDataPoints)) {
+			for (var i = this.maxDataPoints - this.currentSize - 1; i > 1; i--) {
+				this.currentSize  += 1;
+				this.currentIndex += 1;
+				this.forEach( function (item) {
+					item.data.unshift({ x: ((i-1) * this.timeInterval || 1) + this.timeBase, y: 0, i: i });
+				}, this );
+			}
+		}
+	},
+
+	addData: function($super, data, x) {
+
+		$super(data, x);
+
+		this.currentSize += 1;
+		this.currentIndex += 1;
+
+		if (this.maxDataPoints !== undefined) {
+			while (this.currentSize > this.maxDataPoints) {
+				this.dropData();
+			}
+		}
+	},
+
+	dropData: function() {
+
+		this.forEach(function(item) {
+			item.data.splice(0, 1);
+		} );
+
+		this.currentSize -= 1;
+	},
+
+	getIndex: function () {
+		return this.currentIndex;
+	}
+} );
+