add RRDChart class

Makefile

@@ -33,6 +33,7 @@ JSSRC=					\
 	grid/PendingObjectGrid.js	\
 	panel/InputPanel.js		\
 	panel/LogView.js		\
+	panel/RRDChart.js		\
 	window/Edit.js			\
 	window/PasswordEdit.js		\
 	window/TaskViewer.js		\

panel/RRDChart.js

@@ -0,0 +1,173 @@
+Ext.define('Proxmox.widget.RRDChart', {
+    extend: 'Ext.chart.CartesianChart',
+    alias: 'widget.proxmoxRRDChart',
+
+    unit: undefined, // bytes, bytespersecond, percent
+    
+    controller: {
+	xclass: 'Ext.app.ViewController',
+
+	convertToUnits: function(value) {
+	    var units = ['', 'k','M','G','T', 'P'];
+	    var si = 0;
+	    while(value >= 1000  && si < (units.length -1)){
+		value = value / 1000;
+		si++;
+	    }
+
+	    // javascript floating point weirdness
+	    value = Ext.Number.correctFloat(value);
+	    
+	    // limit to 2 decimal points
+	    value = Ext.util.Format.number(value, "0.##");
+	    
+	    return value.toString() + " " + units[si];
+	},
+
+	leftAxisRenderer: function(axis, label, layoutContext) {
+	    var me = this;
+
+	    return me.convertToUnits(label);
+	},
+
+	onSeriesTooltipRender: function(tooltip, record, item) {
+	    var me = this.getView();
+	    
+	    var suffix = '';
+	    
+	    if (me.unit === 'percent') {
+		suffix = '%';
+	    } else if (me.unit === 'bytes') {
+		suffix = 'B';
+	    } else if (me.unit === 'bytespersecond') {
+		suffix = 'B/s';
+	    }
+	    
+	    var prefix = item.field;
+	    if (me.fieldTitles && me.fieldTitles[me.fields.indexOf(item.field)]) {
+		prefix = me.fieldTitles[me.fields.indexOf(item.field)];
+	    }
+            tooltip.setHtml(prefix + ': ' + this.convertToUnits(record.get(item.field)) + suffix +
+			    '<br>' + new Date(record.get('time')));
+	},
+
+	onAfterAnimation: function(chart, eopts) {
+	    // if the undobuton is disabled,
+	    // disable our tool
+
+	    var ourUndoZoomButton = chart.tools[0];
+	    var undoButton = chart.interactions[0].getUndoButton();
+	    ourUndoZoomButton.setDisabled(undoButton.isDisabled());
+	}
+    },
+    
+    width: 770,
+    height: 300,
+    animation: false,
+    interactions: [{
+	type: 'crosszoom'
+    }],
+    axes: [{
+	type: 'numeric',
+	position: 'left',
+	grid: true,
+	renderer: 'leftAxisRenderer',
+	//renderer: function(axis, label) { return label; },
+	minimum: 0
+    }, {
+	type: 'time',
+	position: 'bottom',
+	grid: true,
+	fields: ['time']
+    }],
+    legend: {
+	docked: 'bottom'
+    },
+    listeners: {
+	animationend: 'onAfterAnimation'
+    },
+
+
+    initComponent: function() {
+	var me = this;
+
+	if (!me.store) {
+	    throw "cannot work without store";
+	}
+
+	if (!me.fields) {
+	    throw "cannot work without fields";
+	}
+
+	me.callParent();
+
+	// add correct label for left axis
+	var axisTitle = "";
+	if (me.unit === 'percent') {
+	    axisTitle = "%";
+	} else if (me.unit === 'bytes') {
+	    axisTitle = "Bytes";
+	} else if (me.unit === 'bytespersecond') {
+	    axisTitle = "Bytes/s";
+	}
+
+	me.axes[0].setTitle(axisTitle);
+
+	me.addTool([{
+	    type: 'minus',
+	    disabled: true,
+	    tooltip: gettext('Undo Zoom'),
+	    handler: function(){
+		var undoButton = me.interactions[0].getUndoButton();
+		if (undoButton.handler) {
+		    undoButton.handler();
+		}
+	    }
+	},{
+	    type: 'restore',
+	    tooltip: gettext('Toggle Legend'),
+	    handler: function(){
+		me.legend.setVisible(!me.legend.isVisible());
+	    }
+	}]);
+	// add a series for each field we get
+	me.fields.forEach(function(item, index){
+	    var title = item;
+	    if (me.fieldTitles && me.fieldTitles[index]) {
+		title = me.fieldTitles[index];
+	    }
+	    me.addSeries({
+		type: 'line',
+		xField: 'time',
+		yField: item,
+		title: title,
+		fill: true,
+		style: {
+		    lineWidth: 1.5,
+		    opacity: 0.60
+		},
+		marker: {
+		    opacity: 0,
+		    scaling: 0.01,
+		    fx: {
+			duration: 200,
+			easing: 'easeOut'
+		    }
+		},
+		highlightCfg: {
+		    opacity: 1,
+		    scaling: 1.5
+		},
+		tooltip: {
+		    trackMouse: true,
+		    renderer: 'onSeriesTooltipRender'
+		}
+	    });
+	});
+
+	// enable animation after the store is loaded
+	me.store.onAfter('load', function() {
+	    me.setAnimation(true);
+	}, this, {single: true});
+    }
+});