refs #3332: Transitions UI (row action for pages report + popover)

git-svn-id: http://dev.piwik.org/svn/trunk@6844 59fd770c-687e-43c8-a1e3-f5a4ff64c105

5 files changed, 901 insertions, 2 deletions

diff --git a/plugins/Transitions/Transitions.php b/plugins/Transitions/Transitions.php
index 1073105681..3e0ccf5666 100644
--- a/plugins/Transitions/Transitions.php
+++ b/plugins/Transitions/Transitions.php
@@ -31,8 +31,6 @@ class Piwik_Transitions extends Piwik_Plugin
 	function getListHooksRegistered()
 	{
 		return array(
-			'ArchiveProcessing_Day.compute.Actions_PageUrlTable' => 'postArchiveDay',
-			'ArchiveProcessing_Period.compute.Actions_PageUrlTable' => 'archivePeriod',
 			'AssetManager.getCssFiles' => 'getCssFiles',
 			'AssetManager.getJsFiles' => 'getJsFiles'
 		);
diff --git a/plugins/Transitions/templates/transitions.css b/plugins/Transitions/templates/transitions.css
new file mode 100644
index 0000000000..96dc572ea3
--- /dev/null
+++ b/plugins/Transitions/templates/transitions.css
@@ -0,0 +1,110 @@
+
+#Transitions_Container {
+	position: relative;
+	z-index: 1500;
+	height: 550px;
+	text-align: left;
+}
+
+#Transitions_Canvas {
+	position: absolute;
+	z-index: 1501;
+}
+
+.Transitions_Text {
+	color: black;
+	font-size: 11px;
+	line-height: 14px;
+	position: absolute;
+	z-index: 1502;
+	font-family: Arial, Helvetica, sans-serif;
+	word-wrap: break-word;
+	text-align: left;
+}
+
+#Transitions_CenterBox {
+	margin: 60px 0 0 320px;
+	width: 208px;
+	height: 270px;
+	background: #f7f7f7;
+	border: 1px solid #a9a399;
+	border-radius:10px;
+	-moz-border-radius:10px;
+	-webkit-border-radius:10px;
+	-webkit-box-shadow: 0px 0px 9px 0px #999;
+	-moz-box-shadow: 0px 0px 9px 0px #999;
+	box-shadow: 0px 0px 9px 0px #999;
+}
+
+#Transitions_CenterBox.Transitions_Loading {
+	background: url(../../../themes/default/images/loading-blue.gif) no-repeat center center #f7f7f7;
+}
+
+#Transitions_CenterBox h2 {
+	font-size: 12px;
+	line-height: 16px;
+	padding: 10px;
+	border-bottom: 1px dotted #a9a399;
+	font-weight: bold;
+	overflow: hidden;
+	color: #255792;
+}
+
+.Transitions_CenterBoxMetrics {
+	padding: 15px 10px 0 10px;
+	display: none;
+	font-size: 12px;
+}
+
+#Transitions_CenterBox h3 {
+	font-weight: bold;
+	font-size: 12px;
+	margin: 15px 0 7px 0;
+	padding: 0;
+	color: #7E7363;
+}
+
+#Transitions_Loops {
+	margin: 360px 0 0 320px;
+	width: 208px;
+	text-align: center;
+	line-height: 25px;
+	font-size: 12px;
+	display: none;
+}
+
+.Transitions_CenterBoxMetrics p {
+	margin: 0 0 5px 0;
+	padding: 0;
+}
+
+.Transitions_CenterBoxMetrics p.Transitions_Margin {
+	margin-bottom: 11px;
+}
+
+#Transitions_Loops .Transitions_Metric,
+.Transitions_CenterBoxMetrics p .Transitions_Metric {
+	font-weight: bold;
+}
+
+.Transitions_BoxTextLeft,
+.Transitions_BoxTextRight {
+	width: 130px;
+	height: 42px;
+	overflow: hidden;
+}
+
+.Transitions_BoxTextRight {
+	text-align: right;
+}
+
+.Transitions_CurveText {
+	color: #255792;
+	font-weight: bold;
+	width: 25px;
+	text-align: right;
+}
+
+.Transitions_SingleLine {
+	font-size: 12px;
+}
\ No newline at end of file
diff --git a/plugins/Transitions/templates/transitions.js b/plugins/Transitions/templates/transitions.js
new file mode 100644
index 0000000000..75db309f30
--- /dev/null
+++ b/plugins/Transitions/templates/transitions.js
@@ -0,0 +1,751 @@
+/*!
+ * Piwik - Web Analytics
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+
+
+//
+// TRANSITIONS ROW ACTION FOR DATA TABLES
+//
+
+function DataTable_RowActions_Transitions(dataTable) {
+	this.dataTable = dataTable;
+	this.transitions = null;
+}
+
+DataTable_RowActions_Transitions.prototype = new DataTable_RowAction;
+
+// override trigger method directly because we don't need the label
+DataTable_RowActions_Transitions.prototype.trigger = function(tr, e, subTableLabel) {
+	var link = tr.find('> td:first > a').attr('href');
+	link = $('<textarea>').html(link).val(); // remove html entities
+	this.openPopover(link);
+};
+
+DataTable_RowActions_Transitions.prototype.doOpenPopover = function(link) {
+	if (this.transitions === null) {
+		this.transitions = new Piwik_Transitions(link, this);
+	} else {
+		this.transitions.reset(link);
+	}
+	this.transitions.showPopover();
+};
+
+
+DataTable_RowActions_Registry.register({
+	
+	name: 'Transitions',
+	
+	dataTableIcon: 'plugins/Transitions/templates/transitions_rowaction.png',
+	
+	createInstance: function(dataTable) {
+		return new DataTable_RowActions_Transitions(dataTable);
+	},
+	
+	isAvailable: function(dataTableParams, tr) {
+		return dataTableParams.module == 'Actions'
+			&& dataTableParams.action == 'getPageUrls'
+			&& tr.find('> td:first > a').size() > 0;
+	}
+
+});
+
+
+//
+// TRANSITIONS IMPLEMENTATION
+//
+
+function Piwik_Transitions(link, rowAction) {
+	this.reset(link);
+	this.rowAction = rowAction;
+	
+	this.ajax = new Piwik_Transitions_Ajax();
+	this.model = new Piwik_Transitions_Model(this.ajax);
+}
+
+Piwik_Transitions.prototype.reset = function(link) {
+	this.link = link;
+	
+	this.popover = null;
+	this.canvas = null;
+	this.centerBox = null;
+};
+
+/** Open the popover */
+Piwik_Transitions.prototype.showPopover = function() {
+	var self = this;
+
+	// initialize popover (with loading message)
+	var loading = $('div.loadingPiwik:first').clone();
+	var box = $(document.createElement('div')).attr('id', 'Transitions_Popover').html(loading);
+	box.dialog({
+		title: '',
+		modal: true,
+		width: '900px',
+		position: ['center', 'center'],
+		resizable: false,
+		autoOpen: true,
+		close: function(event, ui) {
+			box.dialog('destroy').remove();
+		}
+	});
+	this.popover = box;
+
+	// load the popover HTML
+	this.ajax.callTransitionsController('renderPopover', function(html) {
+		box.html(html);
+		box.dialog({position: ['center', 'center']});
+
+		var canvasDom = box.find('#Transitions_Canvas')[0];
+		self.canvas = new Piwik_Transitions_Canvas(canvasDom, 850, 550);
+
+		self.centerBox = box.find('#Transitions_CenterBox');
+
+		self.centerBox.find('h2').html(self.addBreakpoints(self.link));
+
+		self.model.loadData(self.link, function() {
+			self.render();
+		});
+	});
+};
+
+/** Add break points to string so that it can be displayed more compactly */
+Piwik_Transitions.prototype.addBreakpoints = function(text) {
+	return text.replace(/([\/&=?\.%#:])/g, '$1<wbr>');
+};
+
+/** Render the popover content */
+Piwik_Transitions.prototype.render = function() {
+	this.renderCenterBox();
+	
+	this.renderEntriesAndExits();
+
+	this.renderPreviousPages();
+	this.renderFollowingPages();
+
+	this.renderReferrers();
+	
+	this.renderLoops();
+};
+
+Piwik_Transitions.prototype.renderCenterBox = function() {
+	var box = this.centerBox;
+	box.removeClass('Transitions_Loading');
+
+	box.find('.Transitions_Pageviews').html(this.model.pageviews);
+
+	var self = this;
+	var showMetric = function(cssClass, modelProperty) {
+		box.find('.Transitions_' + cssClass).html(self.model[modelProperty]);
+		box.find('.Transitions_' + cssClass + 'Percentage').html(self.model.getPercentage(modelProperty, true));
+	};
+
+	showMetric('DirectEntries', 'directEntries');
+	showMetric('SearchEngines', 'searchEngineReferrals');
+	showMetric('Websites', 'websiteReferrals');
+
+	showMetric('Exits', 'exits');
+	showMetric('Bounces', 'bounces');
+
+	box.find('.Transitions_CenterBoxMetrics').show();
+};
+
+Piwik_Transitions.prototype.renderLoops = function() {
+	if (this.model.loops == 0) {
+		return;
+	}
+	this.popover.find('.Transitions_Loops').html(this.model.loops);
+	this.popover.find('.Transitions_LoopsPercentage').html(this.model.getPercentage('loops', true));
+	this.popover.find('#Transitions_Loops').show();
+	this.canvas.renderLoops(this.model.getPercentage('loops'));
+};
+
+Piwik_Transitions.prototype.renderEntriesAndExits = function() {
+	if (this.model.directEntries > 0) {
+		this.canvas.renderBoxLeft({
+			share: this.model.getPercentage('directEntries'),
+			gradient: this.canvas.createHorizontalGradient('#CFEDCA', '#91DE83', 'left'),
+			boxText: 'Direct entries',
+			boxTextNumLines: 1,
+			boxTextCssClass: 'SingleLine',
+			smallBox: true
+		});
+		this.canvas.addBoxSpacing(20, 'left');
+	}
+
+	if (this.model.exits > 0) {
+		this.canvas.renderBoxRight({
+			share: this.model.getPercentage('exits'),
+			gradient: this.canvas.createHorizontalGradient('#EBCDCC', '#D98E8D', 'right'),
+			boxText: 'Exits',
+			boxTextNumLines: 1,
+			boxTextCssClass: 'SingleLine',
+			smallBox: true
+		});
+		this.canvas.addBoxSpacing(20, 'right');
+	}
+};
+
+Piwik_Transitions.prototype.renderPreviousPages = function() {
+	this.renderPages(this.model.getPreviousPages(), 'left');
+};
+
+Piwik_Transitions.prototype.renderFollowingPages = function() {
+	this.renderPages(this.model.getFollowingPages(), 'right');
+};
+
+Piwik_Transitions.prototype.renderPages = function(pagesData, side) {
+	var self = this;
+	var gradientPages = this.canvas.createHorizontalGradient('#F5F4F0', '#CFCBB6', side);
+	var gradientOthers = this.canvas.createHorizontalGradient('#F5F4F0', '#E3E1D5', side);
+
+	var totalShare = this.model.getPercentage(side == 'left' ? 'internalTrafficIn' : 'internalTrafficOut');
+	totalShare -= this.model.getPercentage('loops');
+	
+	for (var i = 0; i < pagesData.length; i++) {
+		var pageData = pagesData[i];
+
+		var isOthers = pageData.url == 'Others';
+		if (isOthers) {
+			this.canvas.addBoxSpacing(10, side);
+		}
+
+		var params = {
+			share: pageData.percentage / 100 * totalShare,
+			gradient: isOthers ? gradientOthers : gradientPages,
+			boxText: pageData.url + ' (' + pageData.referrals + ')',
+			boxTextNumLines: 3,
+			curveText: pageData.percentage + '%',
+			onClick: (function(url) {
+				return function() { self.reloadPopover(url) };
+			})(pageData.url)
+		};
+
+		if (side == 'left') {
+			this.canvas.renderBoxLeft(params);
+		} else {
+			this.canvas.renderBoxRight(params);
+		}
+	}
+};
+
+Piwik_Transitions.prototype.renderReferrers = function() {
+	var self = this;
+	var gradient = this.canvas.createHorizontalGradient('#DDE4ED', '#9BBADE', 'left');
+	this.canvas.addBoxSpacing(20, 'left');
+
+	var renderBox = function(modelVariable, text) {
+		if (self.model[modelVariable] == 0) {
+			return;
+		}
+		self.canvas.renderBoxLeft({
+			share: self.model.getPercentage(modelVariable),
+			gradient: gradient,
+			boxText: text,
+			boxTextNumLines: 1,
+			boxTextCssClass: 'SingleLine',
+			smallBox: true
+		});
+	};
+
+	renderBox('searchEngineReferrals', 'From Search Engines');
+	renderBox('websiteReferrals', 'From other Websites');
+	renderBox('campaignReferrals', 'From Campaigns');
+};
+
+Piwik_Transitions.prototype.reloadPopover = function(link) {
+	this.popover.dialog('close');
+	this.rowAction.openPopover(link);
+};
+
+
+// --------------------------------------
+// CANVAS
+// --------------------------------------
+
+function Piwik_Transitions_Canvas(canvasDom, width, height) {
+	if (!canvasDom.getContext) {
+		alert('Your browser is not supported.');
+		return;
+	}
+
+	/** DOM element that contains the canvas */
+	this.container = $(canvasDom).parent();
+	/** Drawing context of the canvas */
+	this.context = canvasDom.getContext('2d');
+
+	/** Width of the entire canvas */
+	this.width = canvasDom.width = width;
+	/** Height of the entire canvas */
+	this.height = canvasDom.height = height;
+
+	/** Current Y positions */
+	this.leftBoxPositionY = 0;
+	this.leftCurvePositionY = 110;
+	this.rightBoxPositionY = 0;
+	this.rightCurvePositionY = 110;
+
+	/** Width of the rectangular box */
+	this.boxWidth = 140;
+	/** Height of the rectangular box */
+	this.boxHeight = 53;
+	/** Height of a smaller rectangular box */
+	this.smallBoxHeight = 30;
+	/** Width of the curve that connects the boxes to the center */
+	this.curveWidth = 180;
+	/** Line-height of the text */
+	this.lineHeight = 14;
+	/** Spacing between rectangular boxes */
+	this.boxSpacing = 7;
+	/** Spacing between the curves where they connect to the center */
+	this.curveSpacing = 2;
+
+	/** The total net height (without curve spacing) of the curves as they connect to the center */
+	this.totalHeightOfConnections = 170;
+
+	/** X positions of the left box - begin means left, end means right */
+	this.leftBoxBeginX = 0;
+	this.leftBoxEndX = this.leftCurveBeginX = this.leftBoxBeginX + this.boxWidth;
+	this.leftCurveEndX = this.leftCurveBeginX + this.curveWidth;
+
+	/** X positions of the right box - begin means left, end means right */
+	this.rightBoxEndX = this.width;
+	this.rightBoxBeginX = this.rightCurveEndX = this.rightBoxEndX - this.boxWidth;
+	this.rightCurveBeginX = this.rightCurveEndX - this.curveWidth;
+}
+
+/**
+ * Helper to create horizontal gradients
+ * @param	position	left|right
+ */
+Piwik_Transitions_Canvas.prototype.createHorizontalGradient = function(lightColor, darkColor, position) {
+	var fromX, toX, fromColor, toColor;
+
+	if (position == 'left') {
+		// gradient is used to fill a box on the left
+		fromX = this.leftBoxBeginX + 50;
+		toX = this.leftCurveEndX - 20;
+		fromColor = lightColor;
+		toColor = darkColor;
+	} else {
+		// gradient is used to fill a box on the right
+		fromX = this.rightCurveBeginX + 20;
+		toX = this.rightBoxEndX - 50;
+		fromColor = darkColor;
+		toColor = lightColor;
+	}
+
+	var gradient = this.context.createLinearGradient(fromX, 0, toX, 0);
+	gradient.addColorStop(0, fromColor);
+	gradient.addColorStop(1, toColor);
+
+	return gradient;
+};
+
+/** Render text using a div inside the container */
+Piwik_Transitions_Canvas.prototype.renderText = function(text, x, y, cssClass, onClick) {
+	var div = this.addDomElement('div', 'Text');
+	div.html(Piwik_Transitions.prototype.addBreakpoints(text));
+	div.css({
+		left: x + 'px',
+		top: y + 'px'
+	});
+	if (cssClass) {
+		div.addClass('Transitions_' + cssClass);
+	}
+	if (onClick) {
+		div.css('cursor', 'pointer').hover(function() {
+			$(this).addClass('Transitions_Hover');
+		}, function() {
+			$(this).removeClass('Transitions_Hover');
+		}).click(onClick);
+	}
+	return div;
+};
+
+/** Add a DOM element inside the container (as a sibling of the canvas) */
+Piwik_Transitions_Canvas.prototype.addDomElement = function(tagName, cssClass) {
+	var el = $(document.createElement('div')).addClass('Transitions_' + cssClass);
+	this.container.append(el);
+	return el;
+};
+
+/**
+ * Render a box on the left hand side.
+ * This method automatically keeps track of the current position.
+ *
+ * OPTIONS (pass as object)
+ * share: of the box in the total amount of incoming transitions
+ * gradient: for filling the box
+ * boxText: to be placed inside the box
+ * boxTextNumLines: the number of lines to be placed in the box
+ * boxTextCssClass: for divs containing the texts (optional)
+ * curveText: to be placed where the curve begins (optional)
+ * smallBox: use this.smallBoxHeight instead of this.boxHeight (optional)
+ */
+Piwik_Transitions_Canvas.prototype.renderBoxLeft = function(params) {
+	var curveHeight = Math.round(this.totalHeightOfConnections * params.share);
+	curveHeight = Math.max(curveHeight, 1);
+
+	var boxHeight = params.smallBox ? this.smallBoxHeight : this.boxHeight;
+
+	// DRAW BACKGROUND
+	this.context.fillStyle = params.gradient;
+
+	// derive coordinates for ths curve
+	var leftUpper = {x: this.leftCurveBeginX, y: this.leftBoxPositionY};
+	var leftLower = {x: this.leftCurveBeginX, y: this.leftBoxPositionY + boxHeight};
+	var rightUpper = {x: this.leftCurveEndX, y: this.leftCurvePositionY};
+	var rightLower = {x: this.leftCurveEndX, y: this.leftCurvePositionY + curveHeight};
+
+	// derive control points for bezier curve
+	var center = (this.leftCurveBeginX + this.leftCurveEndX) / 2;
+	var cp1Upper = {x: center, y: leftUpper.y};
+	var cp2Upper = {x: center, y: rightUpper.y};
+	var cp1Lower = {x: center, y: rightLower.y};
+	var cp2Lower = {x: center, y: leftLower.y};
+
+	this.context.beginPath();
+
+	// the flow
+	this.context.moveTo(leftUpper.x, leftUpper.y);
+	this.context.bezierCurveTo(cp1Upper.x, cp1Upper.y, cp2Upper.x, cp2Upper.y, rightUpper.x, rightUpper.y);
+	this.context.lineTo(rightLower.x, rightLower.y);
+	this.context.bezierCurveTo(cp1Lower.x, cp1Lower.y, cp2Lower.x, cp2Lower.y, leftLower.x, leftLower.y);
+
+	// the box
+	this.context.lineTo(leftLower.x - this.boxWidth + 4, leftLower.y);
+	this.context.lineTo(leftLower.x - this.boxWidth, leftUpper.y);
+	this.context.lineTo(leftUpper.x, leftUpper.y);
+	this.context.fill();
+
+	if (typeof this.context.endPath == 'function') {
+		this.context.endPath();
+	}
+
+
+	// ADD TEXT
+
+	// inside box
+	var boxTextLeft = this.leftBoxBeginX + 10;
+	var boxTextTop = this.leftBoxPositionY + boxHeight / 2 - params.boxTextNumLines * this.lineHeight / 2;
+	var onClick = typeof params.onClick == 'function' ? params.onClick : false; 
+	var el = this.renderText(params.boxText, boxTextLeft, boxTextTop, 'BoxTextLeft', onClick);
+	if (params.boxTextCssClass) {
+		el.addClass('Transitions_' + params.boxTextCssClass);
+	}
+
+	// at the beginning of the curve
+	if (params.curveText) {
+		var curveTextLeft = this.leftBoxBeginX + this.boxWidth + 12;
+		var curveTextTop = this.leftBoxPositionY + boxHeight / 2 - this.lineHeight / 2;
+		this.renderText(params.curveText, curveTextLeft, curveTextTop, 'CurveText');
+	}
+
+
+	this.leftBoxPositionY += boxHeight + this.boxSpacing;
+	this.leftCurvePositionY += curveHeight + this.curveSpacing;
+};
+
+/**
+ * Render a box on the right hand side.
+ * This method automatically keeps track of the current position.
+ *
+ * OPTIONS (pass as object)
+ * share: of the box in the total amount of incoming transitions
+ * gradient: for filling the box
+ * boxText: to be placed inside the box
+ * boxTextNumLines: the number of lines to be placed in the box
+ * boxTextCssClass: for divs containing the texts (optional)
+ * curveText: to be placed where the curve begins (optional)
+ */
+Piwik_Transitions_Canvas.prototype.renderBoxRight = function(params) {
+	var curveHeight = Math.round(this.totalHeightOfConnections * params.share);
+	curveHeight = Math.max(curveHeight, 1);
+
+	var boxHeight = params.smallBox ? this.smallBoxHeight : this.boxHeight;
+
+	// DRAW BACKGROUND
+	this.context.fillStyle = params.gradient;
+
+	// derive coordinates for curve
+	var leftUpper = {x: this.rightCurveBeginX, y: this.rightCurvePositionY};
+	var leftLower = {x: this.rightCurveBeginX, y: this.rightCurvePositionY + curveHeight};
+	var rightUpper = {x: this.rightCurveEndX, y: this.rightBoxPositionY};
+	var rightLower = {x: this.rightCurveEndX, y: this.rightBoxPositionY + boxHeight};
+
+	// derive control points for bezier curve
+	var center = (this.rightCurveBeginX + this.rightCurveEndX) / 2;
+	var cp1Upper = {x: center, y: leftUpper.y};
+	var cp2Upper = {x: center, y: rightUpper.y};
+	var cp1Lower = {x: center, y: rightLower.y};
+	var cp2Lower = {x: center, y: leftLower.y};
+
+	this.context.beginPath();
+
+	// the flow part 1
+	this.context.moveTo(leftUpper.x, leftUpper.y);
+	this.context.bezierCurveTo(cp1Upper.x, cp1Upper.y, cp2Upper.x, cp2Upper.y, rightUpper.x, rightUpper.y);
+
+	// the box
+	this.context.lineTo(rightUpper.x + this.boxWidth, rightUpper.y);
+	this.context.lineTo(rightLower.x + this.boxWidth - 4, rightLower.y);
+	this.context.lineTo(rightLower.x, rightLower.y);
+
+	// the flow part 2
+	this.context.bezierCurveTo(cp1Lower.x, cp1Lower.y, cp2Lower.x, cp2Lower.y, leftLower.x, leftLower.y);
+	this.context.lineTo(leftUpper.x, leftUpper.y);
+	this.context.fill();
+
+	if (typeof this.context.endPath == 'function') {
+		this.context.endPath();
+	}
+
+
+	// ADD TEXT
+
+	// inside box
+	var boxTextLeft = this.rightBoxBeginX;
+	var boxTextTop = this.rightBoxPositionY + boxHeight / 2 - params.boxTextNumLines * this.lineHeight / 2;
+	var onClick = typeof params.onClick == 'function' ? params.onClick : false;
+	var el = this.renderText(params.boxText, boxTextLeft, boxTextTop, 'BoxTextRight', onClick);
+	if (params.boxTextCssClass) {
+		el.addClass('Transitions_' + params.boxTextCssClass);
+	}
+
+	// at the beginning of the curve
+	if (params.curveText) {
+		var curveTextLeft = this.rightBoxBeginX - 35;
+		var curveTextTop = this.rightBoxPositionY + boxHeight / 2 - this.lineHeight / 2;
+		this.renderText(params.curveText, curveTextLeft, curveTextTop, 'CurveText');
+	}
+
+
+	this.rightBoxPositionY += boxHeight + this.boxSpacing;
+	this.rightCurvePositionY += curveHeight + this.curveSpacing;
+};
+
+/** Add spacing after the current box */
+Piwik_Transitions_Canvas.prototype.addBoxSpacing = function(spacing, side) {
+	if (side == 'left') {
+		this.leftBoxPositionY += spacing;
+	} else {
+		this.rightBoxPositionY += spacing;
+	}
+};
+
+Piwik_Transitions_Canvas.prototype.renderLoops = function(share) {
+	var curveHeight = Math.round(this.totalHeightOfConnections * share);
+	curveHeight = Math.max(curveHeight, 1);
+	
+	// create gradient
+	var gradient = this.context.createLinearGradient(this.leftCurveEndX - 50, 0, this.rightCurveBeginX + 50, 0);
+	var light = '#F5F4F0';
+	var dark = '#E3E1D5';
+	gradient.addColorStop(0, dark);
+	gradient.addColorStop(.5, light);
+	gradient.addColorStop(1, dark);
+	
+	this.context.fillStyle = gradient;
+	
+	this.context.beginPath();
+	
+	// curve from the upper left connection to the center box to the lower left connection to the text box 
+	var point1 = {x: this.leftCurveEndX, y: this.leftCurvePositionY};
+	var point2 = {x: this.leftCurveEndX, y: 385};
+	
+	var cpLeftX = (this.leftCurveBeginX + this.leftCurveEndX) / 2 + 30;
+	var cp1 = {x: cpLeftX, y: point1.y};
+	var cp2 = {x: cpLeftX, y: point2.y};
+	
+	this.context.moveTo(point1.x, point1.y);
+	this.context.bezierCurveTo(cp1.x, cp1.y, cp2.x, cp2.y, point2.x, point2.y);
+	
+	// lower line of text box
+	var point3 = {x: this.rightCurveBeginX, y: point2.y};
+	this.context.lineTo(point3.x, point3.y);
+	
+	// curve to upper right connection to the center box
+	var point4 = {x: this.rightCurveBeginX, y: this.rightCurvePositionY};
+	var cpRightX = (this.rightCurveBeginX + this.rightCurveEndX) / 2 - 30;
+	var cp3 = {x: cpRightX, y: point3.y};
+	var cp4 = {x: cpRightX, y: point4.y};
+	this.context.bezierCurveTo(cp3.x, cp3.y, cp4.x, cp4.y, point4.x, point4.y);
+	
+	// line to lower right connection to the center box
+	var point5 = {x: point4.x, y: point4.y + curveHeight};
+	this.context.lineTo(point5.x, point5.y);
+	
+	// curve to upper right connection to the text box
+	var point6 = {x: point5.x, y: point2.y - 25};
+	cpRightX -= 30;
+	var cp5 = {x: cpRightX, y: point5.y};
+	var cp6 = {x: cpRightX, y: point6.y};
+	this.context.bezierCurveTo(cp5.x, cp5.y, cp6.x, cp6.y, point6.x, point6.y);
+	
+	// upper line of the text box
+	var point7 = {x: point1.x, y: point6.y};
+	this.context.lineTo(point7.x, point7.y);
+	
+	// line to lower left connection to the center box
+	var point8 = {x: point1.x, y: point1.y +  + curveHeight};
+	cpLeftX += 30;
+	var cp7 = {x: cpLeftX, y: point7.y};
+	var cp8 = {x: cpLeftX, y: point8.y};
+	this.context.bezierCurveTo(cp7.x, cp7.y, cp8.x, cp8.y, point8.x, point8.y);
+	
+	this.context.fill();
+
+	if (typeof this.context.endPath == 'function') {
+		this.context.endPath();
+	}
+
+};
+
+
+// --------------------------------------
+// MODEL
+// --------------------------------------
+
+function Piwik_Transitions_Model(ajax) {
+	this.ajax = ajax;
+}
+
+Piwik_Transitions_Model.prototype.loadData = function(link, callback) {
+	var self = this;
+	
+	this.pageviews = 0;
+	this.exits = 0;
+	this.bounces = 0;
+	this.loops = 0;
+
+	this.internalTrafficIn = 0;
+	this.internalTrafficOut = 0;
+
+	this.directEntries = 0;
+	this.searchEngineReferrals = 0;
+	this.websiteReferrals = 0;
+	this.campaignReferrals = 0;
+
+	this.followingPages = [];
+	this.previousPages = [];
+
+	this.ajax.callApi('Transitions.getFullReport', {
+			pageUrl: link,
+			expanded: 1
+		},
+		function(report) {
+			console.log(report);
+			// load page metrics
+			self.pageviews = report.pageMetrics.pageviews;
+			self.exits = report.pageMetrics.exits;
+			self.bounces = report.pageMetrics.bounces;
+			self.loops = report.pageMetrics.loops;
+			self.internalTrafficIn = report.pageMetrics.internalTrafficIn;
+			self.internalTrafficOut = report.pageMetrics.internalTrafficOut;
+
+			// load referrers: split direct entries and others
+			for (var i = 0; i < report.referrers.length; i++) {
+				var referrer = report.referrers[i];
+				if (referrer.shortName == 'direct') {
+					self.directEntries = referrer.visits;
+				} else if (referrer.shortName == 'search') {
+					self.searchEngineReferrals = referrer.visits;
+				} else if (referrer.shortName == 'website') {
+					self.websiteReferrals = referrer.visits;
+				} else if (referrer.shortName == 'campaign') {
+					self.campaignReferrals = referrer.visits;
+				}
+			}
+
+			// load previous and following pages
+			self.previousPages = report.previousPages;
+			self.followingPages = report.followingPages;
+
+			callback();
+		});
+};
+
+Piwik_Transitions_Model.prototype.getPercentage = function(metric, formatted) {
+	var percentage = (this.pageviews == 0 ? 0 : this[metric] / this.pageviews);
+
+	if (formatted) {
+		percentage = this.roundPercentage(percentage);
+		percentage += '%';
+	}
+
+	return percentage;
+};
+
+Piwik_Transitions_Model.prototype.getPreviousPages = function() {
+	var total = 0;
+	for (var i = 0; i < this.previousPages.length; i++) {
+		total += parseInt(this.previousPages[i].referrals, 10);
+	}
+
+	for (var i = 0; i < this.previousPages.length; i++) {
+		this.previousPages[i].percentage = this.roundPercentage(this.previousPages[i].referrals / total);
+	}
+
+	return this.previousPages;
+};
+
+Piwik_Transitions_Model.prototype.getFollowingPages = function() {
+	var total = 0;
+
+	for (var i = 0; i < this.followingPages.length; i++) {
+		total += parseInt(this.followingPages[i].referrals, 10);
+	}
+
+	for (var i = 0; i < this.followingPages.length; i++) {
+		this.followingPages[i].percentage = this.roundPercentage(this.followingPages[i].referrals / total);
+	}
+
+	return this.followingPages;
+};
+
+Piwik_Transitions_Model.prototype.roundPercentage = function(value) {
+	if (value < .1) {
+		return Math.round(value * 1000) / 10.0;
+	} else {
+		return Math.round(value * 100);
+	}
+};
+
+
+// --------------------------------------
+// AJAX
+// --------------------------------------
+
+function Piwik_Transitions_Ajax() {
+}
+
+Piwik_Transitions_Ajax.prototype.callTransitionsController = function(action, callback) {
+	$.post('index.php', {
+		module: 'Transitions',
+		action: action,
+		date: piwik.currentDateString,
+		idSite: piwik.idSite,
+		period: piwik.period
+	}, callback);
+};
+
+Piwik_Transitions_Ajax.prototype.callApi = function(method, params, callback) {
+	params.module = 'API';
+	params.method = method;
+	params.date = piwik.currentDateString;
+	params.idSite = piwik.idSite;
+	params.period = piwik.period;
+	params.token_auth = piwik.token_auth;
+	params.format = 'JSON';
+
+	$.post('index.php', params, function(result) {
+		if (typeof result.result != 'undefined' && result.result == 'error') {
+			alert(result.message);
+		} else {
+			callback(result);
+		}
+	}, 'json');
+};
diff --git a/plugins/Transitions/templates/transitions.tpl b/plugins/Transitions/templates/transitions.tpl
new file mode 100644
index 0000000000..5c9ad2d04d
--- /dev/null
+++ b/plugins/Transitions/templates/transitions.tpl
@@ -0,0 +1,40 @@
+
+<div id="Transitions_Container">
+	<div id="Transitions_CenterBox" class="Transitions_Text Transitions_Loading">
+		<h2></h2>
+		<div class="Transitions_CenterBoxMetrics">
+			<p class="Transitions_Margin">
+				<span class="Transitions_Pageviews Transitions_Metric"></span> {'General_ColumnPageviews'|translate} 
+			</p>
+			
+			<h3>{'Transitions_IncomingTraffic'|translate}</h3>
+			<p>
+				<span class="Transitions_DirectEntries Transitions_Metric"></span> {'Referers_TypeDirectEntries'|translate:''} 
+				(<span class="Transitions_DirectEntriesPercentage"></span>)
+			</p>
+			<p>
+				<span class="Transitions_SearchEngines Transitions_Metric"></span> {'Referers_TypeSearchEngines'|translate:''}
+				(<span class="Transitions_SearchEnginesPercentage"></span>)
+			</p>
+			<p>
+				<span class="Transitions_Websites Transitions_Metric"></span> {'Referers_TypeWebsites'|translate:''}
+				(<span class="Transitions_WebsitesPercentage"></span>)
+			</p>
+			
+			<h3>{'Transitions_OutgoingTraffic'|translate}</h3>
+			<p>
+				<span class="Transitions_Exits Transitions_Metric"></span> {'General_ColumnExits'|translate} 
+				(<span class="Transitions_ExitsPercentage"></span>), {'Transitions_Including'|translate}
+			</p>
+			<p>
+				<span class="Transitions_Bounces Transitions_Metric"></span> {'General_ColumnBounces'|translate} 
+				(<span class="Transitions_BouncesPercentage"></span>)
+			</p>
+		</div>
+	</div>
+	<div id="Transitions_Loops" class="Transitions_Text">
+		<span class="Transitions_Loops Transitions_Metric"></span> {'Transitions_Loops'|translate} 
+		(<span class="Transitions_LoopsPercentage"></span>)
+	</div>
+	<canvas id="Transitions_Canvas"></canvas>
+</div>
\ No newline at end of file
diff --git a/plugins/Transitions/templates/transitions_rowaction.png b/plugins/Transitions/templates/transitions_rowaction.png
new file mode 100755
index 0000000000..5e31bbe260
--- /dev/null
+++ b/plugins/Transitions/templates/transitions_rowaction.png