Tools/CISupport/build-webkit-org/public_html/dashboard/Scripts/BuildbotQueueView.js - WebKit - Git at Google

 /*
  * Copyright (C) 2013, 2016 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */

 BuildbotQueueView = function(queues)
 {
     QueueView.call(this);

     this.queues = queues || [];

     this.queues.forEach(function(queue) {
         if (this.platform && this.platform != queue.platform)
             throw "A buildbot view may not contain queues for multiple platforms."
         else
             this.platform = queue.platform;
         queue.addEventListener(BuildbotQueue.Event.IterationsAdded, this._queueIterationsAdded, this);
         queue.addEventListener(BuildbotQueue.Event.UnauthorizedAccess, this._unauthorizedAccess, this);
     }.bind(this));

     var sortedRepositories = Dashboard.sortedRepositories;
     for (var i = 0; i < sortedRepositories.length; i++) {
         var trac = sortedRepositories[i].trac;
         if (trac)
             trac.addEventListener(Trac.Event.CommitsUpdated, this._newCommitsRecorded, this);
     }
 };

 BaseObject.addConstructorFunctions(BuildbotQueueView);

 BuildbotQueueView.UpdateInterval = 45000; // 45 seconds
 BuildbotQueueView.UpdateSoonTimeout = 1000; // 1 second

 BuildbotQueueView.prototype = {
     constructor: BuildbotQueueView,
     __proto__: QueueView.prototype,

     _latestProductiveIteration: function(queue)
     {
         if (!queue.iterations.length)
             return null;
         if (queue.iterations[0].productive)
             return queue.iterations[0];
         return queue.iterations[0].previousProductiveIteration;
     },

     _appendUnauthorizedLineView: function(queue)
     {
         console.assert(queue.buildbot.needsAuthentication);
         console.assert(!queue.buildbot.isAuthenticated);
         var javascriptURL = "javascript:buildbots[" + buildbots.indexOf(queue.buildbot) + "].updateQueues(Buildbot.UpdateReason.Reauthenticate)";
         var status = new StatusLineView("unauthorized", StatusLineView.Status.Unauthorized, "", null, javascriptURL);
         this.element.appendChild(status.element);
     },

     _createLoadingIndicator: function(iteration, heading) {
         var content = document.createElement("div");
         content.className = "test-results-popover";

         this._addIterationHeadingToPopover(iteration, content, heading);
         this._addDividerToPopover(content);

         var loadingIndicator = document.createElement("div");
         loadingIndicator.className = "loading-indicator";
         loadingIndicator.textContent = "Loading\u2026";
         content.appendChild(loadingIndicator);

         return content;
     },

     // Work around bug 80159: -webkit-user-select:none not respected when copying content.
     // We set clipboard data manually, temporarily making non-selectable content hidden
     // to easily get accurate selection text.
     _onPopoverCopy: function(event) {
         var iterator = document.createNodeIterator(
             event.currentTarget,
             NodeFilter.SHOW_ELEMENT,
             {
                 acceptNode: function(element) {
                     if (window.getComputedStyle(element).webkitUserSelect !== "none")
                         return NodeFilter.FILTER_ACCEPT;
                     return NodeFilter.FILTER_SKIP;
                 }
             }
         );

         while ((node = iterator.nextNode()))
             node.style.visibility = "visible";

         event.currentTarget.style.visibility = "hidden";
         event.clipboardData.setData('text', window.getSelection());
         event.currentTarget.style.visibility = "";
         return false;
     },

     _popoverContentForJavaScriptCoreTestRegressions: function(iteration, testName)
     {
         var content = document.createElement("div");
         content.className = "test-results-popover";

         this._addIterationHeadingToPopover(iteration, content, "javascriptcore test failures", iteration.queue.buildbot.javaScriptCoreTestStdioUrlForIteration(iteration, testName));
         this._addDividerToPopover(content);

         if (!iteration.javaScriptCoreTestResults.regressions) {
             var message = document.createElement("div");
             message.className = "loading-failure";
             message.textContent = "Test results couldn\u2019t be loaded";
             content.appendChild(message);
             return content;
         }

         var regressions = iteration.javaScriptCoreTestResults.regressions;

         for (var i = 0, end = regressions.length; i != end; ++i) {
             var test = regressions[i];
             var rowElement = document.createElement("div");
             var testPathElement = document.createElement("span");
             testPathElement.className = "test-path";
             testPathElement.textContent = test;
             rowElement.appendChild(testPathElement);
             content.appendChild(rowElement);
         }

         content.oncopy = this._onPopoverCopy;
         return content;
     },

     _presentPopoverForJavaScriptCoreTestRegressions: function(testName, element, popover, iteration)
     {
         if (iteration.javaScriptCoreTestResults.regressions)
             var content = this._popoverContentForJavaScriptCoreTestRegressions(iteration, testName);
         else {
             var content = this._createLoadingIndicator(iteration, "javascriptcore test failures");
             iteration.loadJavaScriptCoreTestResults(testName, function() {
                 popover.content = this._popoverContentForJavaScriptCoreTestRegressions(iteration, testName);
             }.bind(this));
         }

         var rect = Dashboard.Rect.rectFromClientRect(element.getBoundingClientRect());
         popover.content = content;
         popover.present(rect, [Dashboard.RectEdge.MIN_Y, Dashboard.RectEdge.MAX_Y, Dashboard.RectEdge.MAX_X, Dashboard.RectEdge.MIN_X]);
         return true;
     },

     _presentPopoverForRevisionRange: function(element, popover, context)
     {
         var content = document.createElement("div");
         content.className = "commit-history-popover";

         // FIXME: Nothing guarantees that Trac has historical data for these revisions.
         var linesForCommits = this._popoverLinesForCommitRange(context.trac, context.branch, context.firstRevision, context.lastRevision);

         var line = document.createElement("div");
         line.className = "title";

         if (linesForCommits.length) {
             line.textContent = "commits since previous result";
             content.appendChild(line);
             this._addDividerToPopover(content);
         } else {
             line.textContent = "no commits to " + context.branch.name + " since previous result";
             content.appendChild(line);
         }

         for (var i = 0; i != linesForCommits.length; ++i)
             content.appendChild(linesForCommits[i]);

         var rect = Dashboard.Rect.rectFromClientRect(element.getBoundingClientRect());
         popover.content = content;
         popover.present(rect, [Dashboard.RectEdge.MIN_Y, Dashboard.RectEdge.MAX_Y, Dashboard.RectEdge.MAX_X, Dashboard.RectEdge.MIN_X]);

         return true;
     },

     _revisionContentWithPopoverForIteration: function(iteration, previousIteration, branch)
     {
         var repository = branch.repository;
         var repositoryName = repository.name;
         console.assert(iteration.revision[repositoryName]);
         var trac = repository.trac;
         var content = document.createElement("span");
         content.textContent = this._formatRevisionForDisplay(iteration.revision[repositoryName], repository);
         content.classList.add("revision-number");

         if (!previousIteration)
             return content;

         var previousIterationRevision = previousIteration.revision[repositoryName];
         console.assert(previousIterationRevision);
         var previousIterationRevisionIndex = trac.indexOfRevision(previousIterationRevision);
         if (previousIterationRevisionIndex === -1)
             return content;

         var firstRevision = trac.nextRevision(branch.name, previousIterationRevision);
         if (firstRevision === Trac.NO_MORE_REVISIONS)
             return content;
         var firstRevisionIndex = trac.indexOfRevision(firstRevision);
         console.assert(firstRevisionIndex !== -1);

         var lastRevision = iteration.revision[repositoryName];
         var lastRevisionIndex = trac.indexOfRevision(lastRevision);
         if (lastRevisionIndex === -1)
             return content;

         if (firstRevisionIndex > lastRevisionIndex)
             return content;

         var context = {
             trac: trac,
             branch: branch,
             firstRevision: firstRevision,
             lastRevision: lastRevision,
         };
         new PopoverTracker(content, this._presentPopoverForRevisionRange.bind(this), context);

         return content;
     },

     _addIterationHeadingToPopover: function(iteration, content, additionalText, additionalTextTarget)
     {
         var title = document.createElement("div");
         title.className = "popover-iteration-heading";

         var queueName = document.createElement("span");
         queueName.className = "queue-name";
         queueName.textContent = iteration.queue.id;
         title.appendChild(queueName);

         var buildbotLink = document.createElement("a");
         buildbotLink.className = "buildbot-link";
         buildbotLink.textContent = "build #" + iteration.id;
         buildbotLink.href = iteration.queue.buildbot.buildPageURLForIteration(iteration);
         buildbotLink.target = "_blank";
         title.appendChild(buildbotLink);

         if (additionalText) {
             var elementType = additionalTextTarget ? "a" : "span";
             var additionalTextElement = document.createElement(elementType);
             additionalTextElement.className = "additional-text";
             additionalTextElement.textContent = additionalText;
             if (additionalTextTarget) {
                 additionalTextElement.href = additionalTextTarget;
                 additionalTextElement.target = "_blank";
             }
             title.appendChild(additionalTextElement);
         }

         content.appendChild(title);
     },

     revisionContentForIteration: function(iteration, previousDisplayedIteration)
     {
         var fragment = document.createDocumentFragment();
         var shouldAddPlusSign = false;
         var branches = iteration.queue.branches;
         for (var i = 0; i < branches.length; ++i) {
             var branch = branches[i];
             if (!iteration.revision[branch.repository.name])
                 continue;
             var content = this._revisionContentWithPopoverForIteration(iteration, previousDisplayedIteration, branch);
             if (shouldAddPlusSign)
                 fragment.appendChild(document.createTextNode(" \uff0b "));
             fragment.appendChild(content);
             shouldAddPlusSign = true;
         }
         return fragment;
     },

     _testStepFailureDescription: function(failedStep)
     {
         if (!failedStep.failureCount)
             return BuildbotIteration.TestSteps[failedStep.name] + " failed";
         if (failedStep.failureCount === 1)
             return BuildbotIteration.TestSteps[failedStep.name] + " failure";
         return BuildbotIteration.TestSteps[failedStep.name] + " failures";
     },

     _testStepFailureDescriptionWithCount: function(failedStep)
     {
         if (!failedStep.failureCount)
             return this._testStepFailureDescription(failedStep);
         if (failedStep.tooManyFailures) {
             // E.g. "50+ layout test failures", preventing line breaks around the "+".
             return failedStep.failureCount + "\ufeff\uff0b\u00a0" + this._testStepFailureDescription(failedStep);
         }
         // E.g. "1 layout test failure", preventing line break after the number.
         return failedStep.failureCount + "\u00a0" + this._testStepFailureDescription(failedStep);
     },

     appendBuildStyle: function(queues, defaultLabel, appendFunction)
     {
         queues.forEach(function(queue) {
             var releaseLabel = document.createElement("a");
             releaseLabel.classList.add("queueLabel");
             releaseLabel.textContent = queue.heading ? queue.heading : defaultLabel;
             releaseLabel.href = queue.overviewURL;
             releaseLabel.target = "_blank";
             this.element.appendChild(releaseLabel);

             appendFunction.call(this, queue);
         }.bind(this));
     },

     _updateQueues: function()
     {
         this.queues.forEach(function(queue) { queue.update(); });
     },

     _queueIterationsAdded: function(event)
     {
         this.updateSoon();

         event.data.addedIterations.forEach(function(iteration) {
             iteration.addEventListener(BuildbotIteration.Event.Updated, this._iterationUpdated, this);
             iteration.addEventListener(BuildbotIteration.Event.UnauthorizedAccess, this._unauthorizedAccess, this);
         }.bind(this));
     },

     _iterationUpdated: function(event)
     {
         this.updateSoon();
     },

     _newCommitsRecorded: function(event)
     {
         this.updateSoon();
     },

     _unauthorizedAccess: function(event)
     {
         this.updateSoon();
     }
 };
	/*
	* Copyright (C) 2013, 2016 Apple Inc. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	*
	* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
	* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	* THE POSSIBILITY OF SUCH DAMAGE.
	*/

	BuildbotQueueView = function(queues)
	{
	QueueView.call(this);

	this.queues = queues \|\| [];

	this.queues.forEach(function(queue) {
	if (this.platform && this.platform != queue.platform)
	throw "A buildbot view may not contain queues for multiple platforms."
	else
	this.platform = queue.platform;
	queue.addEventListener(BuildbotQueue.Event.IterationsAdded, this._queueIterationsAdded, this);
	queue.addEventListener(BuildbotQueue.Event.UnauthorizedAccess, this._unauthorizedAccess, this);
	}.bind(this));

	var sortedRepositories = Dashboard.sortedRepositories;
	for (var i = 0; i < sortedRepositories.length; i++) {
	var trac = sortedRepositories[i].trac;
	if (trac)
	trac.addEventListener(Trac.Event.CommitsUpdated, this._newCommitsRecorded, this);
	}
	};

	BaseObject.addConstructorFunctions(BuildbotQueueView);

	BuildbotQueueView.UpdateInterval = 45000; // 45 seconds
	BuildbotQueueView.UpdateSoonTimeout = 1000; // 1 second

	BuildbotQueueView.prototype = {
	constructor: BuildbotQueueView,
	__proto__: QueueView.prototype,

	_latestProductiveIteration: function(queue)
	{
	if (!queue.iterations.length)
	return null;
	if (queue.iterations[0].productive)
	return queue.iterations[0];
	return queue.iterations[0].previousProductiveIteration;
	},

	_appendUnauthorizedLineView: function(queue)
	{
	console.assert(queue.buildbot.needsAuthentication);
	console.assert(!queue.buildbot.isAuthenticated);
	var javascriptURL = "javascript:buildbots[" + buildbots.indexOf(queue.buildbot) + "].updateQueues(Buildbot.UpdateReason.Reauthenticate)";
	var status = new StatusLineView("unauthorized", StatusLineView.Status.Unauthorized, "", null, javascriptURL);
	this.element.appendChild(status.element);
	},

	_createLoadingIndicator: function(iteration, heading) {
	var content = document.createElement("div");
	content.className = "test-results-popover";

	this._addIterationHeadingToPopover(iteration, content, heading);
	this._addDividerToPopover(content);

	var loadingIndicator = document.createElement("div");
	loadingIndicator.className = "loading-indicator";
	loadingIndicator.textContent = "Loading\u2026";
	content.appendChild(loadingIndicator);

	return content;
	},

	// Work around bug 80159: -webkit-user-select:none not respected when copying content.
	// We set clipboard data manually, temporarily making non-selectable content hidden
	// to easily get accurate selection text.
	_onPopoverCopy: function(event) {
	var iterator = document.createNodeIterator(
	event.currentTarget,
	NodeFilter.SHOW_ELEMENT,
	{
	acceptNode: function(element) {
	if (window.getComputedStyle(element).webkitUserSelect !== "none")
	return NodeFilter.FILTER_ACCEPT;
	return NodeFilter.FILTER_SKIP;
	}
	}
	);

	while ((node = iterator.nextNode()))
	node.style.visibility = "visible";

	event.currentTarget.style.visibility = "hidden";
	event.clipboardData.setData('text', window.getSelection());
	event.currentTarget.style.visibility = "";
	return false;
	},

	_popoverContentForJavaScriptCoreTestRegressions: function(iteration, testName)
	{
	var content = document.createElement("div");
	content.className = "test-results-popover";

	this._addIterationHeadingToPopover(iteration, content, "javascriptcore test failures", iteration.queue.buildbot.javaScriptCoreTestStdioUrlForIteration(iteration, testName));
	this._addDividerToPopover(content);

	if (!iteration.javaScriptCoreTestResults.regressions) {
	var message = document.createElement("div");
	message.className = "loading-failure";
	message.textContent = "Test results couldn\u2019t be loaded";
	content.appendChild(message);
	return content;
	}

	var regressions = iteration.javaScriptCoreTestResults.regressions;

	for (var i = 0, end = regressions.length; i != end; ++i) {
	var test = regressions[i];
	var rowElement = document.createElement("div");
	var testPathElement = document.createElement("span");
	testPathElement.className = "test-path";
	testPathElement.textContent = test;
	rowElement.appendChild(testPathElement);
	content.appendChild(rowElement);
	}

	content.oncopy = this._onPopoverCopy;
	return content;
	},

	_presentPopoverForJavaScriptCoreTestRegressions: function(testName, element, popover, iteration)
	{
	if (iteration.javaScriptCoreTestResults.regressions)
	var content = this._popoverContentForJavaScriptCoreTestRegressions(iteration, testName);
	else {
	var content = this._createLoadingIndicator(iteration, "javascriptcore test failures");
	iteration.loadJavaScriptCoreTestResults(testName, function() {
	popover.content = this._popoverContentForJavaScriptCoreTestRegressions(iteration, testName);
	}.bind(this));
	}

	var rect = Dashboard.Rect.rectFromClientRect(element.getBoundingClientRect());
	popover.content = content;
	popover.present(rect, [Dashboard.RectEdge.MIN_Y, Dashboard.RectEdge.MAX_Y, Dashboard.RectEdge.MAX_X, Dashboard.RectEdge.MIN_X]);
	return true;
	},

	_presentPopoverForRevisionRange: function(element, popover, context)
	{
	var content = document.createElement("div");
	content.className = "commit-history-popover";

	// FIXME: Nothing guarantees that Trac has historical data for these revisions.
	var linesForCommits = this._popoverLinesForCommitRange(context.trac, context.branch, context.firstRevision, context.lastRevision);

	var line = document.createElement("div");
	line.className = "title";

	if (linesForCommits.length) {
	line.textContent = "commits since previous result";
	content.appendChild(line);
	this._addDividerToPopover(content);
	} else {
	line.textContent = "no commits to " + context.branch.name + " since previous result";
	content.appendChild(line);
	}

	for (var i = 0; i != linesForCommits.length; ++i)
	content.appendChild(linesForCommits[i]);

	var rect = Dashboard.Rect.rectFromClientRect(element.getBoundingClientRect());
	popover.content = content;
	popover.present(rect, [Dashboard.RectEdge.MIN_Y, Dashboard.RectEdge.MAX_Y, Dashboard.RectEdge.MAX_X, Dashboard.RectEdge.MIN_X]);

	return true;
	},

	_revisionContentWithPopoverForIteration: function(iteration, previousIteration, branch)
	{
	var repository = branch.repository;
	var repositoryName = repository.name;
	console.assert(iteration.revision[repositoryName]);
	var trac = repository.trac;
	var content = document.createElement("span");
	content.textContent = this._formatRevisionForDisplay(iteration.revision[repositoryName], repository);
	content.classList.add("revision-number");

	if (!previousIteration)
	return content;

	var previousIterationRevision = previousIteration.revision[repositoryName];
	console.assert(previousIterationRevision);
	var previousIterationRevisionIndex = trac.indexOfRevision(previousIterationRevision);
	if (previousIterationRevisionIndex === -1)
	return content;

	var firstRevision = trac.nextRevision(branch.name, previousIterationRevision);
	if (firstRevision === Trac.NO_MORE_REVISIONS)
	return content;
	var firstRevisionIndex = trac.indexOfRevision(firstRevision);
	console.assert(firstRevisionIndex !== -1);

	var lastRevision = iteration.revision[repositoryName];
	var lastRevisionIndex = trac.indexOfRevision(lastRevision);
	if (lastRevisionIndex === -1)
	return content;

	if (firstRevisionIndex > lastRevisionIndex)
	return content;

	var context = {
	trac: trac,
	branch: branch,
	firstRevision: firstRevision,
	lastRevision: lastRevision,
	};
	new PopoverTracker(content, this._presentPopoverForRevisionRange.bind(this), context);

	return content;
	},

	_addIterationHeadingToPopover: function(iteration, content, additionalText, additionalTextTarget)
	{
	var title = document.createElement("div");
	title.className = "popover-iteration-heading";

	var queueName = document.createElement("span");
	queueName.className = "queue-name";
	queueName.textContent = iteration.queue.id;
	title.appendChild(queueName);

	var buildbotLink = document.createElement("a");
	buildbotLink.className = "buildbot-link";
	buildbotLink.textContent = "build #" + iteration.id;
	buildbotLink.href = iteration.queue.buildbot.buildPageURLForIteration(iteration);
	buildbotLink.target = "_blank";
	title.appendChild(buildbotLink);

	if (additionalText) {
	var elementType = additionalTextTarget ? "a" : "span";
	var additionalTextElement = document.createElement(elementType);
	additionalTextElement.className = "additional-text";
	additionalTextElement.textContent = additionalText;
	if (additionalTextTarget) {
	additionalTextElement.href = additionalTextTarget;
	additionalTextElement.target = "_blank";
	}
	title.appendChild(additionalTextElement);
	}

	content.appendChild(title);
	},

	revisionContentForIteration: function(iteration, previousDisplayedIteration)
	{
	var fragment = document.createDocumentFragment();
	var shouldAddPlusSign = false;
	var branches = iteration.queue.branches;
	for (var i = 0; i < branches.length; ++i) {
	var branch = branches[i];
	if (!iteration.revision[branch.repository.name])
	continue;
	var content = this._revisionContentWithPopoverForIteration(iteration, previousDisplayedIteration, branch);
	if (shouldAddPlusSign)
	fragment.appendChild(document.createTextNode(" \uff0b "));
	fragment.appendChild(content);
	shouldAddPlusSign = true;
	}
	return fragment;
	},

	_testStepFailureDescription: function(failedStep)
	{
	if (!failedStep.failureCount)
	return BuildbotIteration.TestSteps[failedStep.name] + " failed";
	if (failedStep.failureCount === 1)
	return BuildbotIteration.TestSteps[failedStep.name] + " failure";
	return BuildbotIteration.TestSteps[failedStep.name] + " failures";
	},

	_testStepFailureDescriptionWithCount: function(failedStep)
	{
	if (!failedStep.failureCount)
	return this._testStepFailureDescription(failedStep);
	if (failedStep.tooManyFailures) {
	// E.g. "50+ layout test failures", preventing line breaks around the "+".
	return failedStep.failureCount + "\ufeff\uff0b\u00a0" + this._testStepFailureDescription(failedStep);
	}
	// E.g. "1 layout test failure", preventing line break after the number.
	return failedStep.failureCount + "\u00a0" + this._testStepFailureDescription(failedStep);
	},

	appendBuildStyle: function(queues, defaultLabel, appendFunction)
	{
	queues.forEach(function(queue) {
	var releaseLabel = document.createElement("a");
	releaseLabel.classList.add("queueLabel");
	releaseLabel.textContent = queue.heading ? queue.heading : defaultLabel;
	releaseLabel.href = queue.overviewURL;
	releaseLabel.target = "_blank";
	this.element.appendChild(releaseLabel);

	appendFunction.call(this, queue);
	}.bind(this));
	},

	_updateQueues: function()
	{
	this.queues.forEach(function(queue) { queue.update(); });
	},

	_queueIterationsAdded: function(event)
	{
	this.updateSoon();

	event.data.addedIterations.forEach(function(iteration) {
	iteration.addEventListener(BuildbotIteration.Event.Updated, this._iterationUpdated, this);
	iteration.addEventListener(BuildbotIteration.Event.UnauthorizedAccess, this._unauthorizedAccess, this);
	}.bind(this));
	},

	_iterationUpdated: function(event)
	{
	this.updateSoon();
	},

	_newCommitsRecorded: function(event)
	{
	this.updateSoon();
	},

	_unauthorizedAccess: function(event)
	{
	this.updateSoon();
	}
	};