Embed Charts

Introduction

This article teaches admins how to utilize the 3B Charts component for embedding charts in a Digital Experience or Record Detail Page. 3B created the component due to the fact that Salesforce requires an additional, more expensive license in order to embed Charts and Dashboards on a community. This component implements custom SOQL queries that are turned into beautiful charts using ChartJS javascript Framework

Digital Experience / Record Page

Example of 3B Charts in a Digital Experience context

Security Architecture

Embedding 3B Charts requires that the administrator builds a security mechanism using Profiles, Permission Sets, Sharing Rules and Sharing Sets. These control what data flows to a 3B Chart. It is the responsibility of the administrator to set up an appropriate security architecture.

Embedding

In the App Builder, a new custom component will be available called "Chart Builder". Similarly, in the digital experience builder, the same component will be made available. Administrators need to drag and drop that component onto a page or record.

Configuring

Once embedded, the App Builder side panel (or digital experience pop-up panel) will render the fields that need to be populated in order to render the chart.

There are 4 main types of components

• Chart
• Data
• Attributes
• Axes

Chart components define the element hosting the canvas, gathering the attributes and the data, and includes all the functionality of available to build a Chart using Chart.js. This component is responsible of dealing with the rendering lifecycle and also handles child events for the elements connected inside it.

Data components represent the source of data to put into the chart.

Attribute components define the different options that can be included to customize the chart. From animations to tooltip configurations, the attributes expose different properties to be filled with objects or callback functions.

Axes components allow you to determine how the data is mapped and represented inside the chart and their different scales.

Reactivity

The Charts component has been created with reactivity as a key point. All the attributes of the different components are reactive to changes, what means, that any change that you perform on real time (for example, the scale or the source data) will automatically fire an update event on the chart.

Sample SOQL

SELECT b3o__Type__c label, COUNT(Id) value FROM b3o__Chat_Message__c GROUP BY b3o__Type__c - this renders a doughnut chart that shows how many inbound messages were received vs how many outbound messages were recieved. Since we group by Type, the legend and dataset will display as Inbound and Outbound

Chart API

ATTRIBUTE NAME	TYPE	DEFAULT	DESCRIPTION
type	string	bar	The type of chart. The options are: line, bar, horizontalBar, radar, doughnut, pie, polarArea, bubble and scatter
uuid	string	A random uuid	UUID used to identify uniquely the chart
chartjsloadedCallback	function		Called when Chartjs is loaded.
canvasOnchange	function		Allows to define a callback for an event (parameter) of type change binded to the canvas.
canvasOnclick	function		Allows to define a callback for an event (parameter) of type click binded to the canvas.
canvasOnmouseover	function		Allows to define a callback for an event (parameter) of type mouseover binded to the canvas.
canvasOnmouseout	function		Allows to define a callback for an event (parameter) of type mouseout binded to the canvas.
responsive	boolean	true	Resizes the chart canvas when its container does (important note...).
responsiveanimationduration	number	0	Duration in milliseconds it takes to animate to new size after a resize event.
maintainaspectratio	boolean	true	Maintain the original canvas aspect ratio (width / height) when resizing.
aspectratio	number	2	Canvas aspect ratio (i.e. width / height, a value of 1 representing a square canvas). Note that this option is ignored if the height is explicitly defined either as attribute or via the style.
callbackResize	function		Called when a resize occurs. Gets passed two arguments: the chart instance and the new size.
devicepixelratio	number	window.devicePixelRatio	Override the window`s default devicePixelRatio.
events	string[]	['mousemove', 'mouseout', 'click', 'touchstart', 'touchmove']	The events option defines the browser events that the chart should listen to for tooltips and hovering. more...
callbackClick	function	null	Called when any of the events fire. Called in the context of the chart and passed the event and an array of active elements (bars, points, etc).
callbackHover	function	null	Called if the event is of type mouseup or click. Called in the context of the chart and passed the event and an array of active elements.
destroyChart	function		Use this to destroy any chart instances that are created. This will clean up any references stored to the chart object within Chart.js, along with any associated event listeners attached by Chart.js. This must be called before the canvas is reused for a new chart.
updateChart(duration, lazy)	function		Triggers an update of the chart. This can be safely called after updating the data object. This will update all scales, legends, and then re-render the chart. A config object can be provided with additional configuration for the update process. This is useful when update is manually called inside an event handler and some different animation is desired. See Updating Charts for more details.
resetChart	function		Reset the chart to it's state before the initial animation. A new animation can then be triggered using update.
renderChart(config)	function		Triggers a redraw of all chart elements. Note, this does not update elements for new data. Use .update() in that case. See .update(config) for more details on the config object.
stopChart	function		Use this to stop any current animation loop. This will pause the chart during any current animation frame. Call .render() to re-animate.
resizeChart	function		Use this to manually resize the canvas element. This is run each time the canvas container is resized, but you can call this method manually if you change the size of the canvas nodes container element.
clearChart	function		Will clear the chart canvas. Used extensively internally between animation frames, but you might find it useful.
toBase64ImageChart	function		This returns a base 64 encoded string of the chart in it's current state.
generateLegendChart	function		Returns an HTML string of a legend for that chart. The legend is generated from the legendCallback in the options.
getElementAtEventChart(event)	function		Calling getElementAtEvent(event) on your Chart instance passing an argument of an event, or jQuery event, will return the single element at the event position. If there are multiple items within range, only the first is returned. The value returned from this method is an array with a single parameter. An array is used to keep a consistent API between the get*AtEvent methods.
getElementsAtEventChart(event)	function		Looks for the element under the event point, then returns all elements at the same data index. This is used internally for 'label' mode highlighting Calling getElementsAtEvent(event) on your Chart instance passing an argument of an event, or jQuery event, will return the point elements that are at that the same position of that event.
getDatasetAtEventChart(event)	function		Looks for the element under the event point, then returns all elements from that dataset. This is used internally for 'dataset' mode highlighting
getDatasetMetaChart(index)	function		Looks for the dataset that matches the current index and returns that metadata. This returned data has all of the metadata that is used to construct the chart. The data property of the metadata will contain information about each point, rectangle, etc. depending on the chart type. Extensive examples of usage are available in the Chart.js tests.

<c-chart type="bar" responsive="true">

</c-chart>

Data API

ATTRIBUTE NAME	TYPE	DEFAULT	DESCRIPTION	CHART
backgroundColor	Color	'rgba(0, 0, 0, 0.1)'	The bar background color.	Line, Bar, Radar, Doughnut, Pie, Polar area, Bubble
borderAlign	string	'center'	The border alignment ('center' or 'inner')	Doughnut, Pie, Polar area
borderCapStyle	string	'butt'	Cap style of the line	Line, Radar
borderColor	Color	'rgba(0, 0, 0, 0.1)'	The bar border color.	Line, Bar, Radar, Doughnut, Pie, Polar area, Bubble
borderDash	number[]	[]	Length and spacing of dashes.	Line, Radar
borderDashOffset	number	0	Offset for line dashes.	Line, Radar
borderJoinStyle	string	'miter'	Line joint style.	Line, Radar
borderSkipped	string	'bottom'	This setting is used to avoid drawing the bar stroke at the base of the fill ('bottom', 'left', 'top', 'right', false)	Bar
borderWidth	number	3	The bar border width (in pixels).	Line, Bar, Radar, Doughnut, Pie, Polar area, Bubble
clip	number/object	borderWidth / 2	How to clip relative to chartArea. Positive value allows overflow, negative value clips that many pixels inside chartArea. 0 = clip at chartArea. Clipping can also be configured per side: clip: {left: 5, top: false, right: -2, bottom: 0}	Line
cubicInterpolationMode	string	'default'	The following interpolation modes are supported: ('default, 'monotone')	Line
detail (required)	object[]		An array containing the data to be displayed in the chart	All
fill	boolean/string	true	Whether to fill the area under the line	Line, Radar
hitRadius	number	1	Bubble additional radius for hit detection (in pixels).	Bubble
hoverBackgroundColor	Color	undefined	Background color when hovered.	Line, Bar, Radar, Doughnut, Pie, Polar area, Bubble
hoverBorderCapStyle	string	undefined	Cap style of the line when hovered	Line, Radar
hoverBorderColor	Color	undefined	Border color when hovered.	Line, Bar, Radar, Doughnut, Pie, Polar area, Bubble
hoverBorderDash	number[]	undefined	Length and spacing of dashes when hovered.	Line, Radar
hoverBorderDashOffset	number	undefined	Offset for line dashes when hovered.	Line, Radar
hoverBorderJoinStyle	string	undefined	Line joint style when hovered.	Line, Radar
hoverBorderWidth	number	undefined	The bar border width (in pixels) when hovered.	Line, Bar, Radar, Doughnut, Pie, Polar area, Bubble
hoverRadius	number	4	Bubble additional radius when hovered (in pixels).	Bubble
label	string	''	The label for the dataset which appears in the legend and tooltips.	Line, Bar, Radar, Bubble
lineTension	number	0.4	Bezier curve tension of the line. Set to 0 to draw straightlines. This option is ignored if monotone cubic interpolation is used.	Line, Radar
order	number	0	The drawing order of dataset. Also affects order for stacking, tooltip, and legend.	Line, Bar, Radar, Bubble
pointBackgroundColor	Color	'rgba(0, 0, 0, 0.1)'	The fill color for points.	Line, Radar
pointBorderColor	Color	'rgba(0, 0, 0, 0.1)'	The border color for points.	Line, Radar
pointBorderWidth	number	1	The width of the point border in pixels.	Line, Radar
pointHitRadius	number	1	The pixel size of the non-displayed point that reacts to mouse events.	Line, Radar
pointHoverBackgroundColor	Color	undefined	The bar background color when hovered.	Line, Radar
pointHoverBorderColor	Color	undefined	The bar border color when hovered.	Line, Radar
pointHoverBorderWidth	number	1	The bar border width when hovered (in pixels).	Line, Radar
pointHoverRadius	number	4	The radius of the point when hovered.	Line, Radar
pointRadius	number	3	The radius of the point shape. If set to 0, the point is not rendered.	Line, Radar
pointRotation	number	0	The rotation of the point in degrees.	Line, Radar
pointStyle	string/Image	'circle'	Style of the point.	Line, Radar, Bubble
radius	number	3	Bubble radius (in pixels).	Bubble
rotation	number	0	Bubble rotation (in degrees).	Bubble
showLine	boolean	undefined	If false, the line is not drawn for this dataset.	Line
spanGaps	boolean	undefined	If true, lines will be drawn between points with no or null data. If false, points with NaN data will create a break in the line.	Line, Radar
stack	string	undefined	The ID of the group to which this dataset belongs to (when stacked, each group will be a separate stack).	Bar
steppedLine	boolean/string	false	The following values are supported for steppedLine: (false, true, 'before', 'after', 'middle')	Line
weight	number	1	The relative thickness of the dataset. Providing a value for weight will cause the pie or doughnut dataset to be drawn with a thickness relative to the sum of all the dataset weight values.	Doughnut, Pie
xAxisID	string	first x axis	The ID of the x axis to plot this dataset on.	Line, Bar
yAxisID	string	first y axis	The ID of the y axis to plot this dataset on.	Line, Bar

<c-chart>
  <c-dataset>
    <c-data
      label="data"
      detail="[28, 48, 40, 19, 96, 27, 100]"
      backgroundcolor="rgba(255,99,132,0.2)"
      bordercolor="rgba(255,99,132,1)"
    >
    </c-data>
  </c-dataset>
</c-chart>

Dataset API

ATTRIBUTE NAME	TYPE	DEFAULT	DESCRIPTION
labels	string[]	Contains the list of labels that will be represented by the data, this means, the main grops

<c-chart>
  <c-dataset labels='["Blue", "Orange", "Yellow", "Green", "Light Blue", "Purple"]'>
  </c-dataset>
</c-chart>

3B Portals

TBC