Tree Select

It is a hierarchical dropdown list, that organizes the data into parent-child format and presents it in a tree-branch view. This is the same as the Tree widget, with extra features added to it.

Basic

Tree Data

The JSON-formatted data that is served as the content of the widget. The format must depict the parent-child link among the values, allowing the widget to display in a tree format. The properties of the JSON content as below.

Property	Description
label	Label for the node
value	Value for the node which must be unique for the entire content
children	Array of children nodes
disabled	Make the node read-only
selectable	Specify if the node can be selectable
checkable	Specify if the node can be checked, if the type is checkbox
disableCheckbox	Make the node disable, when the type is checkbox

[
  {
    "label": "Asia",
    "value": "asia",
    "children": [
      {
        "label": "China",
        "value": "china",
        "children": [
          {
            "label": "Beijing",
            "value": "beijing"
          },
          {
            "label": "Shanghai",
            "value": "shanghai"
          }
        ]
      },
      {
        "label": "Japan",
        "value": "japan"
      }
    ]
  },
  {
    "label": "Europe",
    "value": "europe",
    "disabled": true,
    "children": [
      {
        "label": "England",
        "value": "england"
      },
      {
        "label": "France",
        "value": "france",
        "checkable": false
      },
      {
        "label": "Germany",
        "value": "germany",
        "disableCheckbox": true
      }
    ]
  },
  {
    "label": "North America",
    "value": "northAmerica"
  }
]

Placeholder

Specifies a hint that describes the expected value. The placeholder shows the hint text in the widget when nothing is selected or entered. This text disappears as soon as a value is entered in the control.

Validation

Required Field

Refers to the field that must be completed by the user, which means the field must be entered with a valid value before submitting the information.

Custom Rule

Apart from validating the entry using the regex rule, users can also use this property to write low-code and check other aspects. For example - check if the city selected in the previous field matches the desired value, throw a custom message to the user even before capturing the entry on this field.

Interaction

Event Handlers

Event	Description
Change	The "Change" event is activated when the value of the widget is changed. When this event triggers, the associated action gets executed.
Focus	This event is triggered when the widget receives focus, meaning it becomes the active element that can accept user input.
Blur	This event occurs when the user shifts the focus out of the widget. This can happen in different scenarios, such as when a user clicks outside an input widget they were typing in or when the user tabs to another field.

Hide

This sets whether the widget has to be displayed on the screen when the program is loaded. This shows/hides the widget both on desktop and mobile devices.

Set the visibility

Disabled

Disables the user interaction with the element on the page. It visually indicates that the element is inactive and prevents users from interacting with it when applied. Shows a red-crossed warning symbol and can be customized to disable the widget according to certain conditions using low-code.

Read-only

Select Type

Property	Description
Single Select	Allows the user to select only one option at a time
Multi Select	The users can pick more than one options from the list
Checkbox	Shows a checkbox as a prefix to each item on the list for the users to select using the checkbox

Default Values

Provide the JSON array of parent-child nodes which the user wants to display the nodes as the selected node by default.

Show Clear Button

Displays a small 'x' type button at the end of the widget, which helps the user to clear out the previous entries and selections.

Searchable

Enables the search feature for users to type and search. It filters down the results and shows the matching options.

Layout

Expanded Values

Provide the JSON array of parent-child nodes which the user wants to display the nodes as the expanded list by default.

Default Expand All Nodes

Toggle this to make all the nodes on the list to be displayed as the expanded list of tree.

Show Line

This creates a line-link among the nodes, showing the parent-child relation explicitly.

Widget Tooltip

This tooltip pops up when the user moves the mouse over the input area of the widget. It is commonly used to hint at the type of input the user needs to provide.

The tooltip will be immediately shown when the user's mouse hovers over the widget, and immediately hides when the user's mouse leaves. This information will be contextual, useful, and informative.

Label

Represents the caption for the widget in the user interface. It is recommended to keep the label string short and convey the usage of the widget in the UI

Tooltip

This tooltip pops up when the user moves the mouse over the label area of the widget. This is commonly used to provide some extra or important information to the user on the usage of the widget.

The tooltip will be immediately shown when the user's mouse hovers over the widget, and immediately hides when the user's mouse leaves. This information will be contextual, useful, and informative.

Position

Property	Description
Left	Shows the label on the left side of the widget entry
Top	Shows the label on top of the widget entry

Alignment

Property	Description
Left	Align the text on the left corner of the label area
Right	Align the text on the right corner of the label area near the tree view

Width

Enter a number value to set the width of the widget. It can be set in terms of pixels and percentage.

Style

Property	Description
Text	Set the colour of the options' text. Recommended to set in contrast with the background.
Loader Color	Pick the colour to the loading spinner when the component shows the loader before getting displayed.
Text Transform	This property specifies how to capitalize an element's text. It can be used to make text appear in all-uppercase or all-lowercase, or with each word capitalized. MDN web docs
Text Decoration	This property sets the appearance of decorative lines on text. Types are "underline", "overline", "line-though", "overline-underline".
Text Size	Set the size of the text in px value - 12px
Text Weight	Increase or decrease the thickness of the font using the list of numbers from 100-800.
Font Family	Type the name of the font family. The reference to the list of font families can be found here: MDN web docs
Font Style	There are 3 types of styles that can be applied: "normal" - The text is shown normally, no style applied. "italic" - The text is cursive. "oblique" - A sloped version of the normal text.
Background	Users can change the colour of the text background using this property. It has all the RGB colour ranges to pick from. It is recommended to use a corresponding background colour that shows the font clearly.
Border Color	Set the colour to the border lines. The border lines will be shown only if that is enabled.
Margin	This value is set in terms of "px" number which creates the space between the border and the content of the widget.
Padding	This value is set in terms of "px" number which creates the space between the border and outer elements.
Border Radius	This sets the radius of the widget's corners, enabling rounded corners on the widget. This value is defined in "px" terms.
Border Width	Set the thickness of the border of the widget using this value. It is defined using "px" terms.
Tags	Set the colour for the chosen options and displayed as the selected items.
Tags Text	The colour for the 'x' mark on the chosen options.
Accent	An accent is a typically bright colour that contrasts with the more utilitarian background and foreground colours within a colour scheme. These are present in the visual style of many platforms (though not all). On the web, an accent is sometimes used in input elements for the active portion of the control, for instance, the background of a checked checkbox. MSDN web docs
Validation Message	Set the colour of the validation text message. Recommended to set in contrast with the background, usually Red.