Websites/perf.webkit.org/public/v3/pages/test-freshness-page.js - WebKit - Git at Google


 class TestFreshnessPage extends PageWithHeading {
     constructor(summaryPageConfiguration, testAgeToleranceInHours)
     {
         super('test-freshness', null);
         this._testAgeTolerance = (testAgeToleranceInHours || 24) * 3600 * 1000;
         this._timeDuration = this._testAgeTolerance * 2;
         this._excludedConfigurations = {};
         this._lastDataPointByConfiguration = null;
         this._indicatorByConfiguration = null;
         this._renderTableLazily = new LazilyEvaluatedFunction(this._renderTable.bind(this));
         this._hoveringIndicator = null;
         this._indicatorForTooltip = null;
         this._firstIndicatorAnchor = null;
         this._showTooltip = false;
         this._builderByIndicator = null;
         this._tabIndexForIndicator = null;
         this._coordinateForIndicator = null;
         this._indicatorAnchorGrid = null;
         this._skipNextClick = false;
         this._skipNextStateCleanOnScroll = false;
         this._lastFocusedCell = null;
         this._renderTooltipLazily = new LazilyEvaluatedFunction(this._renderTooltip.bind(this));

         this._loadConfig(summaryPageConfiguration);
     }

     name() { return 'Test-Freshness'; }

     _loadConfig(summaryPageConfiguration)
     {
         const platformIdSet = new Set;
         const metricIdSet = new Set;

         for (const config of summaryPageConfiguration) {
             for (const platformGroup of config.platformGroups) {
                 for (const platformId of platformGroup.platforms)
                     platformIdSet.add(platformId);
             }

             for (const metricGroup of config.metricGroups) {
                 for (const subgroup of metricGroup.subgroups) {
                     for (const metricId of subgroup.metrics)
                         metricIdSet.add(metricId);
                 }
             }

             const excludedConfigs = config.excludedConfigurations;
             for (const platform in excludedConfigs) {
                 if (platform in this._excludedConfigurations)
                     this._excludedConfigurations[platform] = this._excludedConfigurations[platform].concat(excludedConfigs[platform]);
                 else
                     this._excludedConfigurations[platform] = excludedConfigs[platform];
             }
         }
         this._platforms = [...platformIdSet].map((platformId) => Platform.findById(platformId));
         this._metrics = [...metricIdSet].map((metricId) => Metric.findById(metricId));
     }

     open(state)
     {
         this._fetchTestResults();
         super.open(state);
     }

     didConstructShadowTree()
     {
         super.didConstructShadowTree();

         const tooltipTable = this.content('tooltip-table');
         this.content().addEventListener('click', (event) => {
             if (!tooltipTable.contains(event.target))
                 this._clearIndicatorState(false);
         });

         tooltipTable.onkeydown = this.createEventHandler((event) => {
             if (event.code == 'Escape') {
                 event.preventDefault();
                 event.stopPropagation();
                 this._lastFocusedCell.focus({preventScroll: true});
             }
         }, {preventDefault: false, stopPropagation: false});

         window.addEventListener('keydown', (event) => {
             if (!['ArrowUp', 'ArrowDown', 'ArrowLeft', 'ArrowRight'].includes(event.code))
                 return;

             event.preventDefault();
             if (!this._indicatorForTooltip && !this._hoveringIndicator) {
                 if (this._firstIndicatorAnchor)
                     this._firstIndicatorAnchor.focus({preventScroll: true});
                 return;
             }

             let [row, column] = this._coordinateForIndicator.get(this._indicatorForTooltip || this._hoveringIndicator);
             let direction = null;

             switch (event.code) {
                 case 'ArrowUp':
                     row -= 1;
                     break;
                 case 'ArrowDown':
                     row += 1;
                     break;
                 case 'ArrowLeft':
                     column -= 1;
                     direction = 'leftOnly'
                     break;
                 case 'ArrowRight':
                     column += 1;
                     direction = 'rightOnly'
             }

             const closestIndicatorAnchor = this._findClosestIndicatorAnchorForCoordinate(column, row, this._indicatorAnchorGrid, direction);
             if (closestIndicatorAnchor)
                 closestIndicatorAnchor.focus({preventScroll: true});
         });
     }

     _findClosestIndicatorAnchorForCoordinate(columnIndex, rowIndex, grid, direction)
     {
         rowIndex = Math.min(Math.max(rowIndex, 0), grid.length - 1);
         const row = grid[rowIndex];
         if (!row.length)
             return null;

         const start = Math.min(Math.max(columnIndex, 0), row.length - 1);
         if (row[start])
             return row[start];

         let offset = 1;
         while (true) {
             const leftIndex = start - offset;
             if (leftIndex >= 0 && row[leftIndex] && direction != 'rightOnly')
                 return row[leftIndex];
             const rightIndex = start + offset;
             if (rightIndex < row.length && row[rightIndex] && direction != 'leftOnly')
                 return row[rightIndex];
             if (leftIndex < 0 && rightIndex >= row.length)
                 break;
             offset += 1;
         }
         return null;
     }

     _fetchTestResults()
     {
         this._measurementSetFetchTime = Date.now();
         this._lastDataPointByConfiguration = new Map;
         this._builderByIndicator = new Map;

         const startTime = this._measurementSetFetchTime - this._timeDuration;

         for (const platform of this._platforms) {
             const lastDataPointByMetric = new Map;
             this._lastDataPointByConfiguration.set(platform, lastDataPointByMetric);

             for (const metric of this._metrics) {
                 if (!this._isValidPlatformMetricCombination(platform, metric, this._excludedConfigurations))
                     continue;

                 const measurementSet = MeasurementSet.findSet(platform.id(), metric.id(), platform.lastModified(metric));
                 measurementSet.fetchBetween(startTime, this._measurementSetFetchTime).then(() => {
                     const currentTimeSeries = measurementSet.fetchedTimeSeries('current', false, false);

                     let timeForLatestBuild = startTime;
                     let lastBuild = null;
                     let builder = null;
                     let commitSetOfLastPoint = null;
                     const lastPoint = currentTimeSeries.lastPoint();
                     if (lastPoint) {
                         timeForLatestBuild = lastPoint.build().buildTime().getTime();
                         const view = currentTimeSeries.viewBetweenPoints(currentTimeSeries.firstPoint(), lastPoint);
                         for (const point of view) {
                             const build = point.build();
                             if (!build)
                                 continue;
                             if (build.buildTime().getTime() >= timeForLatestBuild) {
                                 timeForLatestBuild = build.buildTime().getTime();
                                 lastBuild = build;
                                 builder = build.builder();
                             }
                         }
                         commitSetOfLastPoint = lastPoint.commitSet();
                     }

                     lastDataPointByMetric.set(metric, {time: timeForLatestBuild, hasCurrentDataPoint: !!lastPoint,
                         lastBuild, builder, commitSetOfLastPoint});
                     this.enqueueToRender();
                 });
             }
         }
     }

     render()
     {
         super.render();

         this._renderTableLazily.evaluate(this._platforms, this._metrics);

         let buildSummaryForFocusingIndicator = null;
         let buildForFocusingIndicator = null;
         let commitSetForFocusingdIndicator = null;
         let chartURLForFocusingIndicator = null;
         let platformForFocusingIndicator = null;
         let metricForFocusingIndicator = null;
         const builderForFocusingIndicator = this._indicatorForTooltip ? this._builderByIndicator.get(this._indicatorForTooltip) : null;
         const builderForHoveringIndicator = this._hoveringIndicator ? this._builderByIndicator.get(this._hoveringIndicator) : null;
         for (const [platform, lastDataPointByMetric] of this._lastDataPointByConfiguration.entries()) {
             for (const [metric, lastDataPoint] of lastDataPointByMetric.entries()) {
                 const timeDuration = this._measurementSetFetchTime - lastDataPoint.time;
                 const timeDurationSummaryPrefix = lastDataPoint.hasCurrentDataPoint ? '' : 'More than ';
                 const timeDurationSummary = BuildRequest.formatTimeInterval(timeDuration);
                 const summary = `${timeDurationSummaryPrefix}${timeDurationSummary} since latest data point.`;

                 const indicator = this._indicatorByConfiguration.get(platform).get(metric);
                 if (this._indicatorForTooltip && this._indicatorForTooltip === indicator) {
                     buildSummaryForFocusingIndicator = summary;
                     buildForFocusingIndicator = lastDataPoint.lastBuild;
                     commitSetForFocusingdIndicator = lastDataPoint.commitSetOfLastPoint;
                     chartURLForFocusingIndicator =  this._router.url('charts', ChartsPage.createStateForDashboardItem(platform.id(), metric.id(),
                         this._measurementSetFetchTime - this._timeDuration));
                     platformForFocusingIndicator = platform;
                     metricForFocusingIndicator = metric;
                 }
                 this._builderByIndicator.set(indicator, lastDataPoint.builder);
                 const highlighted = builderForFocusingIndicator && builderForFocusingIndicator == lastDataPoint.builder
                     || builderForHoveringIndicator && builderForHoveringIndicator === lastDataPoint.builder;
                 indicator.update(timeDuration, this._testAgeTolerance, highlighted);
             }
         }
         this._renderTooltipLazily.evaluate(this._indicatorForTooltip, this._showTooltip, buildSummaryForFocusingIndicator, buildForFocusingIndicator,
             commitSetForFocusingdIndicator, chartURLForFocusingIndicator, platformForFocusingIndicator, metricForFocusingIndicator, this._tabIndexForIndicator.get(this._indicatorForTooltip));
     }

     _renderTooltip(indicator, showTooltip, buildSummary, build, commitSet, chartURL, platform, metric, tabIndex)
     {
         if (!indicator || !buildSummary || !showTooltip) {
             this.content('tooltip-anchor').style.display =  showTooltip ? null : 'none';
             return;
         }
         const element = ComponentBase.createElement;
         const link = ComponentBase.createLink;

         const rect = indicator.element().getBoundingClientRect();
         const tooltipAnchor = this.content('tooltip-anchor');
         tooltipAnchor.style.display = null;
         tooltipAnchor.style.top = rect.top + 'px';
         tooltipAnchor.style.left = rect.left + rect.width / 2 + 'px';

         let tableContent = [element('tr', element('td', {colspan: 2}, buildSummary))];

         if (chartURL) {
             const linkDescription = `${metric.test().name()} on ${platform.name()}`;
             tableContent.push(element('tr', [
                 element('td', 'Chart'),
                 element('td', {colspan: 2}, link(linkDescription, linkDescription, chartURL, true, tabIndex))
             ]));
         }

         if (commitSet) {
             if (commitSet.repositories().length)
                 tableContent.push(element('tr', element('th', {colspan: 2}, 'Latest build information')));

             tableContent.push(Repository.sortByNamePreferringOnesWithURL(commitSet.repositories()).map((repository) => {
                 const commit = commitSet.commitForRepository(repository);
                 return element('tr', [
                     element('td', repository.name()),
                     element('td', commit.url() ? link(commit.label(), commit.label(), commit.url(), true, tabIndex) : commit.label())
                 ]);
             }));
         }

         if (build) {
             const url = build.url();
             const buildTag = build.buildTag();
             tableContent.push(element('tr', [
                 element('td', 'Build'),
                 element('td', {colspan: 2}, [
                     url ? link(buildTag, build.label(), url, true, tabIndex) : buildTag
                 ]),
             ]));
         }

         this.renderReplace(this.content("tooltip-table"),  tableContent);
     }

     _renderTable(platforms, metrics)
     {
         const element = ComponentBase.createElement;
         const tableHeadElements = [element('th',  {class: 'table-corner row-head'}, 'Platform \\ Test')];

         for (const metric of metrics)
             tableHeadElements.push(element('th', {class: 'diagonal-head'}, element('div', metric.test().fullName())));

         this._indicatorByConfiguration = new Map;
         this._coordinateForIndicator = new Map;
         this._tabIndexForIndicator = new Map;
         this._indicatorAnchorGrid = [];
         this._firstIndicatorAnchor = null;
         let currentTabIndex = 1;

         const tableBodyElement = platforms.map((platform, rowIndex) =>  {
             const indicatorByMetric = new Map;
             this._indicatorByConfiguration.set(platform, indicatorByMetric);

             let indicatorAnchorsInCurrentRow = [];

             const cells = metrics.map((metric, columnIndex) => {
                 const [cell, anchor, indicator] = this._constructTableCell(platform, metric, currentTabIndex);

                 indicatorAnchorsInCurrentRow.push(anchor);
                 if (!indicator)
                     return cell;

                 indicatorByMetric.set(metric, indicator);
                 this._tabIndexForIndicator.set(indicator, currentTabIndex);
                 this._coordinateForIndicator.set(indicator, [rowIndex, columnIndex]);

                 ++currentTabIndex;
                 if (!this._firstIndicatorAnchor)
                     this._firstIndicatorAnchor = anchor;
                 return cell;
             });
             this._indicatorAnchorGrid.push(indicatorAnchorsInCurrentRow);

             const row = element('tr', [element('th', {class: 'row-head'}, platform.label()), ...cells]);
             return row;
         });

         const tableBody = element('tbody', tableBodyElement);
         tableBody.onscroll = this.createEventHandler(() => this._clearIndicatorState(true));

         this.renderReplace(this.content('test-health'), [element('thead', tableHeadElements), tableBody]);
     }

     _isValidPlatformMetricCombination(platform, metric)
     {
         return !(this._excludedConfigurations && this._excludedConfigurations[platform.id()]
             && this._excludedConfigurations[platform.id()].some((metricId) => metricId == metric.id()))
             && platform.hasMetric(metric);
     }

     _constructTableCell(platform, metric, tabIndex)
     {
         const element = ComponentBase.createElement;
         const link = ComponentBase.createLink;
         if (!this._isValidPlatformMetricCombination(platform, metric))
             return [element('td', {class: 'blank-cell'}, element('div')), null, null];

         const indicator = new FreshnessIndicator;
         const anchor = link(indicator, '', () => {
             if (this._skipNextClick) {
                 this._skipNextClick = false;
                 return;
             }
             this._showTooltip = !this._showTooltip;
             this.enqueueToRender();
         }, false, tabIndex);

         const cell = element('td', {class: 'status-cell'}, anchor);
         this._configureAnchorForIndicator(anchor, indicator);
         return [cell, anchor, indicator];
     }

     _configureAnchorForIndicator(anchor, indicator)
     {
         anchor.onmouseover = this.createEventHandler(() => {
             this._hoveringIndicator = indicator;
             this.enqueueToRender();
         });
         anchor.onmousedown = this.createEventHandler(() =>
             this._skipNextClick = this._indicatorForTooltip != indicator, {preventDefault: false, stopPropagation: false});
         anchor.onfocus = this.createEventHandler(() => {
             this._showTooltip = this._indicatorForTooltip != indicator;
             this._hoveringIndicator = indicator;
             this._indicatorForTooltip = indicator;
             this._lastFocusedCell = anchor;
             this._skipNextStateCleanOnScroll = true;
             this.enqueueToRender();
         });
         anchor.onkeydown = this.createEventHandler((event) => {
             if (event.code == 'Escape') {
                 event.preventDefault();
                 event.stopPropagation();
                 this._showTooltip = event.code == 'Enter' ? !this._showTooltip : false;
                 this.enqueueToRender();
             }
         }, {preventDefault: false, stopPropagation: false});
     }

     _clearIndicatorState(dueToScroll)
     {
         if (this._skipNextStateCleanOnScroll) {
             this._skipNextStateCleanOnScroll = false;
             if (dueToScroll)
                 return;
         }
         this._showTooltip = false;
         this._indicatorForTooltip = null;
         this._hoveringIndicator = null;
         this.enqueueToRender();
     }

     static htmlTemplate()
     {
         return `<section class="page-with-heading">
             <table id="test-health"></table>
             <div id="tooltip-anchor">
                 <table id="tooltip-table"></table>
             </div>
         </section>`;
     }

     static cssTemplate()
     {
         return `
             .page-with-heading {
                 display: flex;
                 justify-content: center;
             }
             #test-health {
                 font-size: 1rem;
             }
             #test-health thead {
                 display: block;
                 align: right;
             }
             #test-health th.table-corner {
                 text-align: right;
                 vertical-align: bottom;
             }
             #test-health .row-head {
                 min-width: 18.5rem;
             }
             #test-health th {
                 text-align: left;
                 border-bottom: 0.1rem solid #ccc;
                 font-weight: normal;
             }
             #test-health th.diagonal-head {
                 white-space: nowrap;
                 height: 16rem;
                 width: 2.2rem;
                 border-bottom: 0rem;
                 padding: 0;
             }
             #test-health th.diagonal-head > div {
                 transform: translate(1.1rem, 7.5rem) rotate(315deg);
                 transform-origin: center left;
                 width: 2.2rem;
                 border: 0rem;
             }
             #test-health tbody {
                 display: block;
                 overflow: auto;
                 height: calc(100vh - 24rem);
             }
             #test-health td.status-cell {
                 position: relative;
                 margin: 0;
                 padding: 0;
                 max-width: 2.2rem;
                 max-height: 2.2rem;
                 min-width: 2.2rem;
                 min-height: 2.2rem;
             }
             #test-health td.status-cell>a {
                 display: block;
             }
             #test-health td.status-cell>a:focus {
                 outline: none;
             }
             #test-health td.status-cell>a:focus::after {
                 position: absolute;
                 content: "";
                 bottom: -0.1rem;
                 left: 50%;
                 margin-left: -0.2rem;
                 height: 0rem;
                 border-width: 0.2rem;
                 border-style: solid;
                 border-color: transparent transparent red transparent;
                 outline: none;
             }
             #test-health td.blank-cell {
                 margin: 0;
                 padding: 0;
                 max-width: 2.2rem;
                 max-height: 2.2rem;
                 min-width: 2.2rem;
                 min-height: 2.2rem;
             }
             #test-health td.blank-cell > div  {
                 background-color: #F9F9F9;
                 height: 1.6rem;
                 width: 1.6rem;
                 margin: auto;
                 padding: 0;
                 position: relative;
                 overflow: hidden;
             }
             #test-health td.blank-cell > div::before {
                 content: "";
                 position: absolute;
                 top: -1px;
                 left: -1px;
                 display: block;
                 width: 0px;
                 height: 0px;
                 border-right: calc(1.6rem + 1px) solid #ddd;
                 border-top: calc(1.6rem + 1px) solid transparent;
             }
             #test-health td.blank-cell > div::after {
                 content: "";
                 display: block;
                 position: absolute;
                 top: 1px;
                 left: 1px;
                 width: 0px;
                 height: 0px;
                 border-right: calc(1.6rem - 1px) solid #F9F9F9;
                 border-top: calc(1.6rem - 1px) solid transparent;
             }
             #tooltip-anchor {
                 width: 0;
                 height: 0;
                 position: absolute;
             }
             #tooltip-table {
                 position: absolute;
                 width: 22rem;
                 background-color: #696969;
                 opacity: 0.96;
                 margin: 0.3rem;
                 padding: 0.3rem;
                 border-radius: 0.4rem;
                 z-index: 1;
                 text-align: center;
                 display: inline-table;
                 color: white;
                 bottom: 0;
                 left: -11.3rem;
             }
             #tooltip-table td {
                 overflow: hidden;
                 max-width: 22rem;
                 text-overflow: ellipsis;
             }
             #tooltip-table::after {
                 content: " ";
                 position: absolute;
                 top: 100%;
                 left: 50%;
                 margin-left: -0.3rem;
                 border-width: 0.3rem;
                 border-style: solid;
                 border-color: #696969 transparent transparent transparent;
             }
             #tooltip-table a {
                 color: white;
                 font-weight: bold;
             }
             #tooltip-table a:focus {
                 background-color: #AAB7B8;
                 outline: none;
             }
         `;
     }

     routeName() { return 'test-freshness'; }
 }

	class TestFreshnessPage extends PageWithHeading {
	constructor(summaryPageConfiguration, testAgeToleranceInHours)
	{
	super('test-freshness', null);
	this._testAgeTolerance = (testAgeToleranceInHours \|\| 24) * 3600 * 1000;
	this._timeDuration = this._testAgeTolerance * 2;
	this._excludedConfigurations = {};
	this._lastDataPointByConfiguration = null;
	this._indicatorByConfiguration = null;
	this._renderTableLazily = new LazilyEvaluatedFunction(this._renderTable.bind(this));
	this._hoveringIndicator = null;
	this._indicatorForTooltip = null;
	this._firstIndicatorAnchor = null;
	this._showTooltip = false;
	this._builderByIndicator = null;
	this._tabIndexForIndicator = null;
	this._coordinateForIndicator = null;
	this._indicatorAnchorGrid = null;
	this._skipNextClick = false;
	this._skipNextStateCleanOnScroll = false;
	this._lastFocusedCell = null;
	this._renderTooltipLazily = new LazilyEvaluatedFunction(this._renderTooltip.bind(this));

	this._loadConfig(summaryPageConfiguration);
	}

	name() { return 'Test-Freshness'; }

	_loadConfig(summaryPageConfiguration)
	{
	const platformIdSet = new Set;
	const metricIdSet = new Set;

	for (const config of summaryPageConfiguration) {
	for (const platformGroup of config.platformGroups) {
	for (const platformId of platformGroup.platforms)
	platformIdSet.add(platformId);
	}

	for (const metricGroup of config.metricGroups) {
	for (const subgroup of metricGroup.subgroups) {
	for (const metricId of subgroup.metrics)
	metricIdSet.add(metricId);
	}
	}

	const excludedConfigs = config.excludedConfigurations;
	for (const platform in excludedConfigs) {
	if (platform in this._excludedConfigurations)
	this._excludedConfigurations[platform] = this._excludedConfigurations[platform].concat(excludedConfigs[platform]);
	else
	this._excludedConfigurations[platform] = excludedConfigs[platform];
	}
	}
	this._platforms = [...platformIdSet].map((platformId) => Platform.findById(platformId));
	this._metrics = [...metricIdSet].map((metricId) => Metric.findById(metricId));
	}

	open(state)
	{
	this._fetchTestResults();
	super.open(state);
	}

	didConstructShadowTree()
	{
	super.didConstructShadowTree();

	const tooltipTable = this.content('tooltip-table');
	this.content().addEventListener('click', (event) => {
	if (!tooltipTable.contains(event.target))
	this._clearIndicatorState(false);
	});

	tooltipTable.onkeydown = this.createEventHandler((event) => {
	if (event.code == 'Escape') {
	event.preventDefault();
	event.stopPropagation();
	this._lastFocusedCell.focus({preventScroll: true});
	}
	}, {preventDefault: false, stopPropagation: false});

	window.addEventListener('keydown', (event) => {
	if (!['ArrowUp', 'ArrowDown', 'ArrowLeft', 'ArrowRight'].includes(event.code))
	return;

	event.preventDefault();
	if (!this._indicatorForTooltip && !this._hoveringIndicator) {
	if (this._firstIndicatorAnchor)
	this._firstIndicatorAnchor.focus({preventScroll: true});
	return;
	}

	let [row, column] = this._coordinateForIndicator.get(this._indicatorForTooltip \|\| this._hoveringIndicator);
	let direction = null;

	switch (event.code) {
	case 'ArrowUp':
	row -= 1;
	break;
	case 'ArrowDown':
	row += 1;
	break;
	case 'ArrowLeft':
	column -= 1;
	direction = 'leftOnly'
	break;
	case 'ArrowRight':
	column += 1;
	direction = 'rightOnly'
	}

	const closestIndicatorAnchor = this._findClosestIndicatorAnchorForCoordinate(column, row, this._indicatorAnchorGrid, direction);
	if (closestIndicatorAnchor)
	closestIndicatorAnchor.focus({preventScroll: true});
	});
	}

	_findClosestIndicatorAnchorForCoordinate(columnIndex, rowIndex, grid, direction)
	{
	rowIndex = Math.min(Math.max(rowIndex, 0), grid.length - 1);
	const row = grid[rowIndex];
	if (!row.length)
	return null;

	const start = Math.min(Math.max(columnIndex, 0), row.length - 1);
	if (row[start])
	return row[start];

	let offset = 1;
	while (true) {
	const leftIndex = start - offset;
	if (leftIndex >= 0 && row[leftIndex] && direction != 'rightOnly')
	return row[leftIndex];
	const rightIndex = start + offset;
	if (rightIndex < row.length && row[rightIndex] && direction != 'leftOnly')
	return row[rightIndex];
	if (leftIndex < 0 && rightIndex >= row.length)
	break;
	offset += 1;
	}
	return null;
	}

	_fetchTestResults()
	{
	this._measurementSetFetchTime = Date.now();
	this._lastDataPointByConfiguration = new Map;
	this._builderByIndicator = new Map;

	const startTime = this._measurementSetFetchTime - this._timeDuration;

	for (const platform of this._platforms) {
	const lastDataPointByMetric = new Map;
	this._lastDataPointByConfiguration.set(platform, lastDataPointByMetric);

	for (const metric of this._metrics) {
	if (!this._isValidPlatformMetricCombination(platform, metric, this._excludedConfigurations))
	continue;

	const measurementSet = MeasurementSet.findSet(platform.id(), metric.id(), platform.lastModified(metric));
	measurementSet.fetchBetween(startTime, this._measurementSetFetchTime).then(() => {
	const currentTimeSeries = measurementSet.fetchedTimeSeries('current', false, false);

	let timeForLatestBuild = startTime;
	let lastBuild = null;
	let builder = null;
	let commitSetOfLastPoint = null;
	const lastPoint = currentTimeSeries.lastPoint();
	if (lastPoint) {
	timeForLatestBuild = lastPoint.build().buildTime().getTime();
	const view = currentTimeSeries.viewBetweenPoints(currentTimeSeries.firstPoint(), lastPoint);
	for (const point of view) {
	const build = point.build();
	if (!build)
	continue;
	if (build.buildTime().getTime() >= timeForLatestBuild) {
	timeForLatestBuild = build.buildTime().getTime();
	lastBuild = build;
	builder = build.builder();
	}
	}
	commitSetOfLastPoint = lastPoint.commitSet();
	}

	lastDataPointByMetric.set(metric, {time: timeForLatestBuild, hasCurrentDataPoint: !!lastPoint,
	lastBuild, builder, commitSetOfLastPoint});
	this.enqueueToRender();
	});
	}
	}
	}

	render()
	{
	super.render();

	this._renderTableLazily.evaluate(this._platforms, this._metrics);

	let buildSummaryForFocusingIndicator = null;
	let buildForFocusingIndicator = null;
	let commitSetForFocusingdIndicator = null;
	let chartURLForFocusingIndicator = null;
	let platformForFocusingIndicator = null;
	let metricForFocusingIndicator = null;
	const builderForFocusingIndicator = this._indicatorForTooltip ? this._builderByIndicator.get(this._indicatorForTooltip) : null;
	const builderForHoveringIndicator = this._hoveringIndicator ? this._builderByIndicator.get(this._hoveringIndicator) : null;
	for (const [platform, lastDataPointByMetric] of this._lastDataPointByConfiguration.entries()) {
	for (const [metric, lastDataPoint] of lastDataPointByMetric.entries()) {
	const timeDuration = this._measurementSetFetchTime - lastDataPoint.time;
	const timeDurationSummaryPrefix = lastDataPoint.hasCurrentDataPoint ? '' : 'More than ';
	const timeDurationSummary = BuildRequest.formatTimeInterval(timeDuration);
	const summary = `${timeDurationSummaryPrefix}${timeDurationSummary} since latest data point.`;

	const indicator = this._indicatorByConfiguration.get(platform).get(metric);
	if (this._indicatorForTooltip && this._indicatorForTooltip === indicator) {
	buildSummaryForFocusingIndicator = summary;
	buildForFocusingIndicator = lastDataPoint.lastBuild;
	commitSetForFocusingdIndicator = lastDataPoint.commitSetOfLastPoint;
	chartURLForFocusingIndicator = this._router.url('charts', ChartsPage.createStateForDashboardItem(platform.id(), metric.id(),
	this._measurementSetFetchTime - this._timeDuration));
	platformForFocusingIndicator = platform;
	metricForFocusingIndicator = metric;
	}
	this._builderByIndicator.set(indicator, lastDataPoint.builder);
	const highlighted = builderForFocusingIndicator && builderForFocusingIndicator == lastDataPoint.builder
	\|\| builderForHoveringIndicator && builderForHoveringIndicator === lastDataPoint.builder;
	indicator.update(timeDuration, this._testAgeTolerance, highlighted);
	}
	}
	this._renderTooltipLazily.evaluate(this._indicatorForTooltip, this._showTooltip, buildSummaryForFocusingIndicator, buildForFocusingIndicator,
	commitSetForFocusingdIndicator, chartURLForFocusingIndicator, platformForFocusingIndicator, metricForFocusingIndicator, this._tabIndexForIndicator.get(this._indicatorForTooltip));
	}

	_renderTooltip(indicator, showTooltip, buildSummary, build, commitSet, chartURL, platform, metric, tabIndex)
	{
	if (!indicator \|\| !buildSummary \|\| !showTooltip) {
	this.content('tooltip-anchor').style.display = showTooltip ? null : 'none';
	return;
	}
	const element = ComponentBase.createElement;
	const link = ComponentBase.createLink;

	const rect = indicator.element().getBoundingClientRect();
	const tooltipAnchor = this.content('tooltip-anchor');
	tooltipAnchor.style.display = null;
	tooltipAnchor.style.top = rect.top + 'px';
	tooltipAnchor.style.left = rect.left + rect.width / 2 + 'px';

	let tableContent = [element('tr', element('td', {colspan: 2}, buildSummary))];

	if (chartURL) {
	const linkDescription = `${metric.test().name()} on ${platform.name()}`;
	tableContent.push(element('tr', [
	element('td', 'Chart'),
	element('td', {colspan: 2}, link(linkDescription, linkDescription, chartURL, true, tabIndex))
	]));
	}

	if (commitSet) {
	if (commitSet.repositories().length)
	tableContent.push(element('tr', element('th', {colspan: 2}, 'Latest build information')));

	tableContent.push(Repository.sortByNamePreferringOnesWithURL(commitSet.repositories()).map((repository) => {
	const commit = commitSet.commitForRepository(repository);
	return element('tr', [
	element('td', repository.name()),
	element('td', commit.url() ? link(commit.label(), commit.label(), commit.url(), true, tabIndex) : commit.label())
	]);
	}));
	}

	if (build) {
	const url = build.url();
	const buildTag = build.buildTag();
	tableContent.push(element('tr', [
	element('td', 'Build'),
	element('td', {colspan: 2}, [
	url ? link(buildTag, build.label(), url, true, tabIndex) : buildTag
	]),
	]));
	}

	this.renderReplace(this.content("tooltip-table"), tableContent);
	}

	_renderTable(platforms, metrics)
	{
	const element = ComponentBase.createElement;
	const tableHeadElements = [element('th', {class: 'table-corner row-head'}, 'Platform \\ Test')];

	for (const metric of metrics)
	tableHeadElements.push(element('th', {class: 'diagonal-head'}, element('div', metric.test().fullName())));

	this._indicatorByConfiguration = new Map;
	this._coordinateForIndicator = new Map;
	this._tabIndexForIndicator = new Map;
	this._indicatorAnchorGrid = [];
	this._firstIndicatorAnchor = null;
	let currentTabIndex = 1;

	const tableBodyElement = platforms.map((platform, rowIndex) => {
	const indicatorByMetric = new Map;
	this._indicatorByConfiguration.set(platform, indicatorByMetric);

	let indicatorAnchorsInCurrentRow = [];

	const cells = metrics.map((metric, columnIndex) => {
	const [cell, anchor, indicator] = this._constructTableCell(platform, metric, currentTabIndex);

	indicatorAnchorsInCurrentRow.push(anchor);
	if (!indicator)
	return cell;

	indicatorByMetric.set(metric, indicator);
	this._tabIndexForIndicator.set(indicator, currentTabIndex);
	this._coordinateForIndicator.set(indicator, [rowIndex, columnIndex]);

	++currentTabIndex;
	if (!this._firstIndicatorAnchor)
	this._firstIndicatorAnchor = anchor;
	return cell;
	});
	this._indicatorAnchorGrid.push(indicatorAnchorsInCurrentRow);

	const row = element('tr', [element('th', {class: 'row-head'}, platform.label()), ...cells]);
	return row;
	});

	const tableBody = element('tbody', tableBodyElement);
	tableBody.onscroll = this.createEventHandler(() => this._clearIndicatorState(true));

	this.renderReplace(this.content('test-health'), [element('thead', tableHeadElements), tableBody]);
	}

	_isValidPlatformMetricCombination(platform, metric)
	{
	return !(this._excludedConfigurations && this._excludedConfigurations[platform.id()]
	&& this._excludedConfigurations[platform.id()].some((metricId) => metricId == metric.id()))
	&& platform.hasMetric(metric);
	}

	_constructTableCell(platform, metric, tabIndex)
	{
	const element = ComponentBase.createElement;
	const link = ComponentBase.createLink;
	if (!this._isValidPlatformMetricCombination(platform, metric))
	return [element('td', {class: 'blank-cell'}, element('div')), null, null];

	const indicator = new FreshnessIndicator;
	const anchor = link(indicator, '', () => {
	if (this._skipNextClick) {
	this._skipNextClick = false;
	return;
	}
	this._showTooltip = !this._showTooltip;
	this.enqueueToRender();
	}, false, tabIndex);

	const cell = element('td', {class: 'status-cell'}, anchor);
	this._configureAnchorForIndicator(anchor, indicator);
	return [cell, anchor, indicator];
	}

	_configureAnchorForIndicator(anchor, indicator)
	{
	anchor.onmouseover = this.createEventHandler(() => {
	this._hoveringIndicator = indicator;
	this.enqueueToRender();
	});
	anchor.onmousedown = this.createEventHandler(() =>
	this._skipNextClick = this._indicatorForTooltip != indicator, {preventDefault: false, stopPropagation: false});
	anchor.onfocus = this.createEventHandler(() => {
	this._showTooltip = this._indicatorForTooltip != indicator;
	this._hoveringIndicator = indicator;
	this._indicatorForTooltip = indicator;
	this._lastFocusedCell = anchor;
	this._skipNextStateCleanOnScroll = true;
	this.enqueueToRender();
	});
	anchor.onkeydown = this.createEventHandler((event) => {
	if (event.code == 'Escape') {
	event.preventDefault();
	event.stopPropagation();
	this._showTooltip = event.code == 'Enter' ? !this._showTooltip : false;
	this.enqueueToRender();
	}
	}, {preventDefault: false, stopPropagation: false});
	}

	_clearIndicatorState(dueToScroll)
	{
	if (this._skipNextStateCleanOnScroll) {
	this._skipNextStateCleanOnScroll = false;
	if (dueToScroll)
	return;
	}
	this._showTooltip = false;
	this._indicatorForTooltip = null;
	this._hoveringIndicator = null;
	this.enqueueToRender();
	}

	static htmlTemplate()
	{
	return `<section class="page-with-heading">
	<table id="test-health"></table>
	<div id="tooltip-anchor">
	<table id="tooltip-table"></table>
	</div>
	</section>`;
	}

	static cssTemplate()
	{
	return `
	.page-with-heading {
	display: flex;
	justify-content: center;
	}
	#test-health {
	font-size: 1rem;
	}
	#test-health thead {
	display: block;
	align: right;
	}
	#test-health th.table-corner {
	text-align: right;
	vertical-align: bottom;
	}
	#test-health .row-head {
	min-width: 18.5rem;
	}
	#test-health th {
	text-align: left;
	border-bottom: 0.1rem solid #ccc;
	font-weight: normal;
	}
	#test-health th.diagonal-head {
	white-space: nowrap;
	height: 16rem;
	width: 2.2rem;
	border-bottom: 0rem;
	padding: 0;
	}
	#test-health th.diagonal-head > div {
	transform: translate(1.1rem, 7.5rem) rotate(315deg);
	transform-origin: center left;
	width: 2.2rem;
	border: 0rem;
	}
	#test-health tbody {
	display: block;
	overflow: auto;
	height: calc(100vh - 24rem);
	}
	#test-health td.status-cell {
	position: relative;
	margin: 0;
	padding: 0;
	max-width: 2.2rem;
	max-height: 2.2rem;
	min-width: 2.2rem;
	min-height: 2.2rem;
	}
	#test-health td.status-cell>a {
	display: block;
	}
	#test-health td.status-cell>a:focus {
	outline: none;
	}
	#test-health td.status-cell>a:focus::after {
	position: absolute;
	content: "";
	bottom: -0.1rem;
	left: 50%;
	margin-left: -0.2rem;
	height: 0rem;
	border-width: 0.2rem;
	border-style: solid;
	border-color: transparent transparent red transparent;
	outline: none;
	}
	#test-health td.blank-cell {
	margin: 0;
	padding: 0;
	max-width: 2.2rem;
	max-height: 2.2rem;
	min-width: 2.2rem;
	min-height: 2.2rem;
	}
	#test-health td.blank-cell > div {
	background-color: #F9F9F9;
	height: 1.6rem;
	width: 1.6rem;
	margin: auto;
	padding: 0;
	position: relative;
	overflow: hidden;
	}
	#test-health td.blank-cell > div::before {
	content: "";
	position: absolute;
	top: -1px;
	left: -1px;
	display: block;
	width: 0px;
	height: 0px;
	border-right: calc(1.6rem + 1px) solid #ddd;
	border-top: calc(1.6rem + 1px) solid transparent;
	}
	#test-health td.blank-cell > div::after {
	content: "";
	display: block;
	position: absolute;
	top: 1px;
	left: 1px;
	width: 0px;
	height: 0px;
	border-right: calc(1.6rem - 1px) solid #F9F9F9;
	border-top: calc(1.6rem - 1px) solid transparent;
	}
	#tooltip-anchor {
	width: 0;
	height: 0;
	position: absolute;
	}
	#tooltip-table {
	position: absolute;
	width: 22rem;
	background-color: #696969;
	opacity: 0.96;
	margin: 0.3rem;
	padding: 0.3rem;
	border-radius: 0.4rem;
	z-index: 1;
	text-align: center;
	display: inline-table;
	color: white;
	bottom: 0;
	left: -11.3rem;
	}
	#tooltip-table td {
	overflow: hidden;
	max-width: 22rem;
	text-overflow: ellipsis;
	}
	#tooltip-table::after {
	content: " ";
	position: absolute;
	top: 100%;
	left: 50%;
	margin-left: -0.3rem;
	border-width: 0.3rem;
	border-style: solid;
	border-color: #696969 transparent transparent transparent;
	}
	#tooltip-table a {
	color: white;
	font-weight: bold;
	}
	#tooltip-table a:focus {
	background-color: #AAB7B8;
	outline: none;
	}
	`;
	}

	routeName() { return 'test-freshness'; }
	}