Attribute Writer

This widget enables the user to write predefined values to an attribute. It gives the user a interface to provide input to override an attributes value.

Widget setting

The following image shows an example of a widget setting.

It is possible to customize the widget settings from the inspector panel (in edit mode), as shown below:

Input value	Description
Title	Sets the title displayed for the widget
Add Device	Add Device button that allows the user to add one or more devices
Device	Type in a device name (or * to list all devices)
Attribute	Once a device is selected, type in an attribute name (or * to list all available attributes)
Show Device Name	Displays the device name when enabled
Show Tango Database Name	Displays the tango database name when enabled
Attribute Display	Select the Label, Name, or None for the attribute
Align Value on Right	Aligns the value to the right when enabled
Text Color	Specify the text color for the given widget
Background Color	Specify the background color for the given widget
Custom CSS	Write custom CSS for the widget container. The syntax is the same as standard CSS used in HTML files

Widget design

Notice: Depending on the type of attribute selected, the widget allows the user to input numbers, strings, boolean or special characters.

Good to know about this widget:

• If the user enters an invalid value, an error message is displayed prompting them to enter a valid input. For example, for a DevDouble attribute, string is considered invalid.

• For attribute of type boolean, a dropdown is displayed with the values true and false. A write button allows the user to overwrite the attribute’s value.

• For non boolean attributes, the value can be overwritten by pressing the enter key in the textbox.

• For non boolean attributes, enter is not accepted until a valid value is typed for the attribute.