Input

The input widget allows the user to enter or edit data such as text, number, email, etc. It is helpful in a form widget with custom validations.
Properties
Properties allow you to edit the input widget, connect it with other widgets and customize the user actions.
Widget Properties
These properties allow you to edit the input box. All these properties are present in the property pane of the widget. The following table lists all the widget properties.
Widget Property
Description
Data Type
Sets the type of data you want to capture in the user input. Selecting a data type will add the associated validation to the user input.
Label
It sets the label for input. It can be left empty if you don't want any label.
Max Chars
It sets the maximum length allowed for input.
Placeholder
It sets a placeholder text inside the input. It displays an expected input or hints to the user.
Tooltip
It sets a tooltip for the widget. You can add hints or extra information about the required input from the user.
Default text
Sets the default text in the input widget before the user has made any changes. This field can be bound to a table's selectedRow to update a record
Regex
Used to add custom validations you want to perform on user input.
Error message
Sets the text of the error message to display if Regex validation fails.
Required
When turned on, user input is required and disables any form submission until the user enters something in the input box.
Visible
It controls the widget's visibility on the page. When turned off, the widget will not be visible when the app is published
Disabled
It disables input to the widget. The widget will remain visible to the user, but user input will not be allowed.
Reset on Submit
It clears the value entered by the user after submit.
Autofocus
It focuses your cursor on the input box when it is loaded.
Spellcheck
It checks the spelling errors for text input.
Let's understand the widget properties in detail.
Data Type
As the name suggests, data type allows the user to set the type of data you want in the input box, like- Text, Number, Email, Password.
The input box will show an error "invalid input" if the entered data does not match the data type or disable the invalid data type input. (If you select the data type as a number, you won't be able to enter text in the input box.)
Label
It allows you to set the label of the input box. For example, if you want the user to enter a name in the input box, you can enter the label "Name." The label appears on the left side of the input box.
You can leave the label empty if you don't want any titles for your input widget.
Placeholder
You can set a proxy text/value inside the input box using the placeholder property. It can be any message or hint for the expected input.
Default text
This property lets you set a default value for the widget before the user has made any changes.
One good example of using this property is to bind it with a column of the selected row of a table. Default text will fill the input widget with the value at that table's cell.
Regex
Using Regex or Regular expression property, you can set specific constraints on the input you expect from the user.
For example, let's add a regular expression for entering a name. The name will only have alphabets and space between the first and last name.
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/^[a-z -]+$/i
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If you enter a value other than an alphabet or space (number of special characters), the widget will show an error message "invalid input."
Error Message
If a user enters an incorrect value, the input widget shows a message "invalid input." You can change this message by using the Error message property to provide better feedback on the input given by the user.
Required
Entering a value in the input box is mandatory when the required property is enabled. You can also write a JS code to link this property to a user action. Click on JS next to the Required to write JavaScript code.
For example, let's drag a checkbox widget checkbox1 onto the canvas and bind it to the Required property. To enable the Required when the user checks the checkbox, add the following JavaScript code in the Required property:
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{{Checkbox1.isChecked}}
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When you tick the checkbox, it will enable the Required property, and the input box will show an error message "This field is required" if you have not entered any input.
Visible
Visible controls the widget's visibility on the app's page. The widget will not be visible on the published app if you turn off this property. You can also write a JS code to link Visible's functionality to a user action. Click on JS next to the Visible to write JavaScript code.
For example, let's drag a checkbox widget checkbox1 onto the canvas and bind it to the Visible property. To enable the Visible when the user checks the checkbox, add the following JavaScript code:
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{{Checkbox1.isChecked}}
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When you tick the checkbox, it will enable the Visible property, and the input box will be visible in the app.
Disabled
It disables the user from entering values in the input widget. The widget will be visible (if Visible is enabled), but user input will not be allowed. You can also write a JS code to link Disabled's functionality to a user action. Click on JS next to the Disabled to write JavaScript code.
For example, let's drag a checkbox widget checkbox1 onto the canvas and bind it to the Disabled property. To enable the Disabled when the user checks the checkbox, add the following JavaScript code:
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{{Checkbox1.isChecked}}
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When you tick the checkbox, it will enable the Disabled property and prevent a user input in the input box.
Reset on Submit
When Reset on Submit is enabled, the input widget resets or clears the entered input after the user submits it.
Let's use the event onSubmit to show a message when input is submitted. You'll see once the user submits and the message pops up, the input widget will reset itself to its original state.
Autofocus
When you enable Autofocus, the cursor focuses on the input box whenever the widget is loaded.
Binding Properties
These properties allow you to bind your input widget with any other widget in queries or JS objects.
Text
It fetches the value that the user enters in the input widget. It changes when the default value changes or the user enters a new value in the input field.
To bind the text entered by the user in the input widget to another widget, open the property pane, and add the code snippet (enclosed in mustache syntax) given below:
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{{<Input_widget_name>.text}}
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Where <Input_widget_name> is the name of your input box.
For example, let's take an Input widget input1 and bind its text to a text widget. Drag a Text widget onto the canvas and add the following snippet to the Text property of the Text widget:
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{{input1.text}}
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The Text widget will then display the text present in the input widget.
Property binding has other applications. For example, it helps in parsing the value entered in an input widget to a Query or JS function.
Events
Event
Description
onTextChanged
This event is triggered when the user enters a value or when the existing value is changed. You can specify the actions to be performed when this event is fired. See a list of supported actions.
Label Styles
You can modify the basic styling of the input widget label. Available options are listed below.
Text color;
Text size;
Font Style (Bold, Italic).
Icon Options
You can add icons to your input widget, allowing users to recognize the expected input instantly. 
Under Icon options, you can -
Pick a suitable icon for your input widget;
Align the icon in the input widget (left or right).
We currently use the icons from the Blueprint library. You can see the list of icons here.
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