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.
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
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.
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.
Select Type
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
Prefix Icon
Choose one from the set of icons that will be displayed as a prefix logo, just before the content.
Suffix Icon
Choose one from the set of icons that will be displayed as a suffix logo, just after the content.
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
Position
Left
Shows the label on the left side of the widget entry
Top
Shows the label on top of the widget entry
Alignment
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
Label
Set the colour of the label text. Recommended to set in contrast with the background.
Text
Set the colour of the options' text. Recommended to set in contrast with the background.
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.
Prefix Icon Color
Choose a specific color for the icon that appears before the actual widget content.
Suffix Icon Color
Choose a specific color for the icon that appears after the actual widget content.
Prefix Icon Size
Set the size of the prefix icon in px value - 12px
Suffix Icon Size
Set the size of the suffix icon in px value - 12px
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