Promotic

Preconfiguration "Widget Chart - Bar graph"



This preconfiguration can be activated when creating a new Pmg object and is included in the group: "/ Widgets". Creates the PmgFrame object configured as - Widget Chart - Bar graph.

The preconfiguration creates a PmgFrame object in the selected panel, a new panel subobject PmaWebDir and copies the files Charts.js and the license text file Chart_Licence.txt into the Resource folder of the application..

The link in the PmgFrame object refers to the html page widget.htm in the PmaWebDir object. This request invokes the widget method in the PmaWebDir.onPageModify event. This creates an html page with a link to the chart.js widget library and configures the parameters for the chart to be displayed. At the same time, it requests (at the specified period) the data for displaying, which is provided by the data method.

It is necessary to modify the script in the data method so it provides the required application data to be displayed.

Properties, type and parameters for the displayed graph are modified in the widget method and their syntax is available on the widget web pages:
This widget (chart.js) was licensed as MIT at the time this preconfiguration was created. It means that it is unrestricted and freely distributable.
Warning:
For the widget to work properly in a local application, it is necessary to have WewbView2 (Edge) installed on the Windows OS.
The component is called Microsoft Edge WebView2 Runtime version Evergreen.
Its use must be enabled in the application's "ini" file.
See Web browser (/#glob/webbrowser)
These configurators can be set before the preconfiguration is created:
Object nameName (identifier) of the Pmg object. It is used to obtain the Pmg object by the PmgObject.Items method.
This configurator sets the initial value of the Name property.
The maximum name length is 30 characters. This is a system name, so it must contain only alphanumeric and must not contain any diacritics, empty string, spaces and the first character must not be a number.
Creates a PmgFrame object, a PmaWebDir subobject and inserts the widget files "chart.js" and "Chart_Licence.txt" into the Resource folder.
Name of the PmaWebDir subobjectName of the PmaWebDir subobject
Name of the widget objectName of the widget object

History:
Pm9.00.22: Created
PROMOTIC 9.0.22 SCADA system documentation - MICROSYS, spol. s r.o.

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