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refactored line graph code
This commit is contained in:
jamespcole
parent
9499a8297a
commit
b50023ede1
@ -12,13 +12,13 @@
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<google-jsapi on-api-load="{{googleApiLoaded}}"></google-jsapi>
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<div id="timeline" style='width: 100%; height: auto;'></div>
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<div id="single_timeline" style='width: 100%; height: auto;'></div>
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<div id="line_graphs" style='width: 100%; height: auto;'></div>
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</template>
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<script>
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Polymer({
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apiLoaded: false,
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stateHistory: null,
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entityIds: [],
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googleApiLoaded: function() {
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google.load("visualization", "1", {
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@ -37,175 +37,200 @@
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drawChart: function() {
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if (!this.apiLoaded || !this.stateHistory) {
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return;
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}
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var graphType = '';
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}
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var container = this.$.timeline;
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var chart = new google.visualization.Timeline(container);
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var dataTable = new google.visualization.DataTable();
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var chart = null;
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var dataTable = null;
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var addRow = null;
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dataTable.addColumn({ type: 'string', id: 'Entity' });
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dataTable.addColumn({ type: 'string', id: 'State' });
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dataTable.addColumn({ type: 'date', id: 'Start' });
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dataTable.addColumn({ type: 'date', id: 'End' });
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var addRow = function(entityDisplay, stateStr, start, end) {
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dataTable.addRow([entityDisplay, stateStr, start, end]);
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};
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if (this.stateHistory.length === 0) {
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return;
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}
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// people can pass in history of 1 entityId or a collection.
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var attributes = {};
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var stateHistory;
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if (_.isArray(this.stateHistory[0])) {
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stateHistory = this.stateHistory;
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} else {
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stateHistory = [this.stateHistory];
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stateHistory = [this.stateHistory];
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}
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//remove any existing chart divs before re-rendering
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while (this.$.timeline.firstChild) {
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this.$.timeline.removeChild(this.$.timeline.firstChild);
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}
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var count = 0;
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var consecutiveTimelineCount = 0;
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var lineChartDevices = Array();
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var numTimelines = 0;
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// stateHistory is a list of lists of sorted state objects
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stateHistory.forEach(function(stateInfo) {
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if(stateInfo.length === 0) return;
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if(stateHistory.length === 1) {
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container = this.$.single_timeline;
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}
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else {
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container = document.createElement("DIV");
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this.$.timeline.appendChild(container);
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}
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var entityDisplay = stateInfo[0].entityDisplay;
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var newLastChanged, prevState = null, prevLastChanged = null;
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//get the latest update to get the graph type from the component attributes
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attributes = stateInfo[stateInfo.length - 1].attributes;
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var attributes = stateInfo[stateInfo.length - 1].attributes;
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graphType = attributes['graph_type'];
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//if the device has a unit of meaurment it will be added as a line graph further down
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if(attributes['unit_of_measurement']) {
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if(!lineChartDevices[attributes['unit_of_measurement']]){
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lineChartDevices[attributes['unit_of_measurement']] = [];
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}
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lineChartDevices[attributes['unit_of_measurement']].push(stateInfo);
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return;
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}
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if(graphType == 'linechart') {
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chart = new google.visualization.LineChart(container);
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dataTable = new google.visualization.DataTable();
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dataTable.addColumn({ type: 'datetime', id: 'Time' });
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dataTable.addColumn({ type: 'number', id: 'Value' });
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addRow = function(entityDisplay, stateStr, start, end) {
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if(stateStr == 'None') {
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stateStr = 0;
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}
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else {
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dataTable.addRow([start, parseFloat(stateStr)]);
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}
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};
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var entityDisplay = stateInfo[0].entityDisplay;
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var newLastChanged, prevState = null, prevLastChanged = null;
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stateInfo.forEach(function(state) {
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stateInfo.forEach(function(state) {
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if (prevState !== null && state.state !== prevState) {
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newLastChanged = state.lastChangedAsDate;
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addRow(entityDisplay, state.state, state.lastChangedAsDate, newLastChanged);
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addRow(entityDisplay, prevState, prevLastChanged, newLastChanged);
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prevState = state.state;
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prevLastChanged = newLastChanged;
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});
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} else if (prevState === null) {
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prevState = state.state;
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prevLastChanged = state.lastChangedAsDate;
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}
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});
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addRow(entityDisplay, prevState, new Date(), new Date());
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addRow(entityDisplay, prevState, prevLastChanged, new Date());
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numTimelines++;
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}.bind(this));
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var options = {
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legend: { position: 'none' },
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chart.draw(dataTable, {
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height: 55 + numTimelines * 42,
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// interactive properties require CSS, the JS api puts it on the document
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// instead of inside our Shadow DOM.
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enableInteractivity: false,
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timeline: {
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showRowLabels: stateHistory.length > 1
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},
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hAxis: {
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format: 'H:mm'
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},
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});
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var isSingleDevice = false;
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if(stateHistory.length === 1) {
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isSingleDevice = true;
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}
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for (var key in lineChartDevices) {
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var deviceStates = lineChartDevices[key];
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if(isSingleDevice) {
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container = this.$.timeline
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}
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else {
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container = this.$.single_timeline;
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container = document.createElement("DIV");
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this.$.line_graphs.appendChild(container);
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}
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var chart = new google.visualization.LineChart(container);
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var dataTable = new google.visualization.DataTable();
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dataTable.addColumn({ type: 'datetime', id: 'Time' });
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//dataTable.addColumn({ type: 'number', id: 'Value' });
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var options = {
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legend: { position: 'top' },
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vAxes: {
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// Adds units to the left hand side of the graph
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0: {title: attributes['unit_of_measurement']}
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0: {title: key}
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},
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hAxis: {
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format: 'H:mm'
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}
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};
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//only put in the title when we are rendering multiple graphs
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if(stateHistory.length === 1) {
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options['titlePosition'] = 'none';
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options['height'] = 150;
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if(isSingleDevice) {
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options.legend.position = 'none';
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}
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var times = _(deviceStates).chain().flatten().pluck('lastChangedAsDate').unique().value();
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times = _.sortBy(times, function(o) { return o; })
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//console.log(times);
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var data = [];
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var empty = new Array(deviceStates.length);
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for(var i = 0; i < empty.length; i++) {
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empty[i] = 0;
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}
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var timeIndex = 1;
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var endDate = new Date();
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var prevDate = times[0];
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data.push([times[0]].concat(empty));
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while(prevDate < endDate) {
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var currentDate = new Date(prevDate);
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currentDate.setMinutes(prevDate.getMinutes() + 1);
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if(currentDate >= times[timeIndex] && timeIndex < times.length) {
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data.push([times[timeIndex]].concat(empty));
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timeIndex++;
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}
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else {
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options['title'] = attributes['friendly_name'];
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data.push([currentDate].concat(empty));
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}
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chart.draw(dataTable, options);
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chart = null;
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prevDate = currentDate;
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}
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else {
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if(chart == null) {
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chart = new google.visualization.Timeline(container);
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dataTable = new google.visualization.DataTable();
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var deviceCount = 0;
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deviceStates.forEach(function(device) {
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var attributes = device[device.length - 1].attributes;
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dataTable.addColumn('number', attributes['friendly_name']);
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dataTable.addColumn({ type: 'string', id: 'Entity' });
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dataTable.addColumn({ type: 'string', id: 'State' });
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dataTable.addColumn({ type: 'date', id: 'Start' });
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dataTable.addColumn({ type: 'date', id: 'End' });
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var currentState = 0;
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var previousState = 0;
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var lastIndex = 0;
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var count = 0;
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device.forEach(function(state) {
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addRow = function(entityDisplay, stateStr, start, end) {
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dataTable.addRow([entityDisplay, stateStr, start, end]);
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};
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}
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var entityDisplay = stateInfo[0].entityDisplay;
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var newLastChanged, prevState = null, prevLastChanged = null;
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stateInfo.forEach(function(state) {
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if (prevState !== null && state.state !== prevState) {
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newLastChanged = state.lastChangedAsDate;
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addRow(entityDisplay, prevState, prevLastChanged, newLastChanged);
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prevState = state.state;
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prevLastChanged = newLastChanged;
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} else if (prevState === null) {
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prevState = state.state;
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prevLastChanged = state.lastChangedAsDate;
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currentState = state.state;
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var start = state.lastChangedAsDate;
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//console.log(start);
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if(state.state == 'None') {
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currentState = previousState;
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}
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for(var i = lastIndex; i < data.length; i++) {
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data[i][1 + deviceCount] = parseFloat(previousState);
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if(data[i][0] == start) {
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data[i][1 + deviceCount] = parseFloat(currentState);
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lastIndex = i;
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break;
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}
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}
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});
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addRow(entityDisplay, prevState, prevLastChanged, new Date());
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previousState = currentState;
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var nextHist = (count + 1 < stateHistory.length) ? stateHistory[count + 1] : null;
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count++;
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}.bind(this));
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var nextGraphType = (nextHist === null) ? '' : nextHist[nextHist.length - 1].attributes['graph_type'];
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consecutiveTimelineCount++
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//this is so that timelines get grouped together into a single chart
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if(nextHist == null || (nextGraphType && nextGraphType != 'timeline')) {
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chart.draw(dataTable, {
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height: 55 + consecutiveTimelineCount * 42,
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// interactive properties require CSS, the JS api puts it on the document
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// instead of inside our Shadow DOM.
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enableInteractivity: false,
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timeline: {
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showRowLabels: stateHistory.length > 1
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},
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hAxis: {
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format: 'H:mm'
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},
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});
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chart = null;
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consecutiveTimelineCount = 0;
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//fill in the rest of the Array
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for(var i = lastIndex; i < data.length; i++) {
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data[i][1 + deviceCount] = parseFloat(previousState);
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}
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}
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count++;
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}.bind(this));
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deviceCount++;
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}.bind(this));
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chart == null;
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dataTable.addRows(data);
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chart.draw(dataTable, options);
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}
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},
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