React DropDownBox API
The DropDownBox UI component consists of a text field, which displays the current value, and a drop-down field, which can contain any UI element.
Configuration
| Name | Description |
|---|---|
| acceptCustomValue |
Specifies whether the UI component allows a user to enter a custom value. |
| accessKey |
Specifies the shortcut key that sets focus on the UI component. |
| activeStateEnabled |
Specifies whether the UI component changes its state as a result of user interaction. |
| buttons |
Allows you to add custom buttons to the input text field. |
| contentComponent |
An alias for the contentTemplate property specified in React. Accepts a custom component. Refer to Using a Custom Component for more information. |
| contentRender |
An alias for the contentTemplate property specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information. |
| contentTemplate |
Specifies a custom template for the drop-down content. |
| dataSource |
Binds the UI component to data. |
| deferRendering |
Specifies whether to render the drop-down field's content when it is displayed. If false, the content is rendered immediately. |
| disabled |
Specifies whether the UI component responds to user interaction. |
| displayExpr |
Specifies the data field whose values should be displayed. |
| displayValueFormatter |
Customizes text before it is displayed in the input field. |
| dropDownButtonComponent |
An alias for the dropDownButtonTemplate property specified in React. Accepts a custom component. Refer to Using a Custom Component for more information. |
| dropDownButtonRender |
An alias for the dropDownButtonTemplate property specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information. |
| dropDownButtonTemplate |
Specifies a custom template for the drop-down button. |
| dropDownOptions |
Configures the drop-down field which holds the content. |
| elementAttr |
Specifies the global attributes to be attached to the UI component's container element. |
| fieldComponent |
An alias for the fieldTemplate property specified in React. Accepts a custom component. Refer to Using a Custom Component for more information. |
| fieldRender |
An alias for the fieldTemplate property specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information. |
| fieldTemplate |
Specifies a custom template for the text field. Must contain the TextBox UI component. |
| focusStateEnabled |
Specifies whether the UI component can be focused using keyboard navigation. |
| height |
Specifies the UI component's height. |
| hint |
Specifies text for a hint that appears when a user pauses on the UI component. |
| hoverStateEnabled |
Specifies whether the UI component changes its state when a user pauses on it. |
| inputAttr |
Specifies the attributes to be passed on to the underlying HTML element. |
| isValid |
Specifies or indicates whether the editor's value is valid. |
| items |
An array of items used to synchronize the DropDownBox with an embedded UI component. |
| maxLength |
Specifies the maximum number of characters you can enter into the textbox. |
| name |
The value to be assigned to the |
| onChange |
A function that is executed when the UI component loses focus after the text field's content was changed using the keyboard. |
| onClosed |
A function that is executed once the drop-down editor is closed. |
| onCopy |
A function that is executed when the UI component's input has been copied. |
| onCut |
A function that is executed when the UI component's input has been cut. |
| onDisposing |
A function that is executed before the UI component is disposed of. |
| onEnterKey |
A function that is executed when the Enter key has been pressed while the UI component is focused. |
| onFocusIn |
A function that is executed when the UI component gets focus. |
| onFocusOut |
A function that is executed when the UI component loses focus. |
| onInitialized |
A function used in JavaScript frameworks to save the UI component instance. |
| onInput |
A function that is executed each time the UI component's input is changed while the UI component is focused. |
| onKeyDown |
A function that is executed when a user is pressing a key on the keyboard. |
| onKeyUp |
A function that is executed when a user releases a key on the keyboard. |
| onOpened |
A function that is executed once the drop-down editor is opened. |
| onOptionChanged |
A function that is executed after a UI component property is changed. |
| onPaste |
A function that is executed when the UI component's input has been pasted. |
| onValueChanged |
A function that is executed after the UI component's value is changed. |
| opened |
Specifies whether or not the drop-down editor is displayed. |
| openOnFieldClick |
Specifies whether a user can open the drop-down list by clicking a text field. |
| placeholder |
The text displayed by the UI component when the UI component value is empty. |
| readOnly |
Specifies whether the editor is read-only. |
| rtlEnabled |
Switches the UI component to a right-to-left representation. |
| showClearButton |
Specifies whether to display the Clear button in the UI component. |
| showDropDownButton |
Specifies whether the drop-down button is visible. |
| stylingMode |
Specifies how the UI component's text field is styled. |
| tabIndex |
Specifies the number of the element when the Tab key is used for navigating. |
| text |
The read-only property that holds the text displayed by the UI component input element. |
| validationError |
Information on the broken validation rule. Contains the first item from the validationErrors array. |
| validationErrors |
An array of the validation rules that failed. |
| validationMessageMode |
Specifies how the message about the validation rules that are not satisfied by this editor's value is displayed. |
| validationStatus |
Indicates or specifies the current validation status. |
| value |
Specifies the currently selected value. May be an object if dataSource contains objects and valueExpr is not set. |
| valueChangeEvent |
Specifies the DOM events after which the UI component's value should be updated. |
| valueExpr |
Specifies which data field provides unique values to the UI component's value. |
| visible |
Specifies whether the UI component is visible. |
| width |
Specifies the UI component's width. |
Methods
| Name | Description |
|---|---|
| beginUpdate() |
Prevents the UI component from refreshing until the endUpdate() method is called. |
| blur() |
Removes focus from the input element. |
| close() |
Closes the drop-down editor. |
| content() |
Gets the popup window's content. |
| defaultOptions(rule) |
Specifies the device-dependent default configuration properties for this component. |
| dispose() |
Disposes of all the resources allocated to the DropDownBox instance. |
| element() |
Gets the root UI component element. |
| endUpdate() |
Refreshes the UI component after a call of the beginUpdate() method. |
| field() |
Gets the UI component's |
| focus() |
Sets focus to the input element representing the UI component. |
| getButton(name) |
Gets an instance of a custom action button. |
| getDataSource() |
Gets the DataSource instance. |
| getInstance(element) |
Gets the instance of a UI component found using its DOM node. |
| instance() |
Gets the UI component's instance. Use it to access other methods of the UI component. |
| off(eventName) |
Detaches all event handlers from a single event. |
| off(eventName, eventHandler) |
Detaches a particular event handler from a single event. |
| on(eventName, eventHandler) |
Subscribes to an event. |
| on(events) |
Subscribes to events. |
| open() |
Opens the drop-down editor. |
| option() |
Gets all UI component properties. |
| option(optionName) |
Gets the value of a single property. |
| option(optionName, optionValue) |
Updates the value of a single property. |
| option(options) |
Updates the values of several properties. |
| registerKeyHandler(key, handler) |
Registers a handler to be executed when a user presses a specific key. |
| repaint() |
Repaints the UI component without reloading data. Call it to update the UI component's markup. |
| reset() |
Resets the value property to the default value. |
| resetOption(optionName) |
Resets a property to its default value. |
Events
| Name | Description |
|---|---|
| change |
Raised when the UI component loses focus after the text field's content was changed using the keyboard. |
| closed |
Raised once the drop-down editor is closed. |
| copy |
Raised when the UI component's input has been copied. |
| cut |
Raised when the UI component's input has been cut. |
| disposing |
Raised before the UI component is disposed of. |
| enterKey |
Raised when the Enter key has been pressed while the UI component is focused. |
| focusIn |
Raised when the UI component gets focus. |
| focusOut |
Raised when the UI component loses focus. |
| initialized |
Raised only once, after the UI component is initialized. |
| input |
Raised each time the UI component's input is changed while the UI component is focused. |
| keyDown |
Raised when a user is pressing a key on the keyboard. |
| keyUp |
Raised when a user releases a key on the keyboard. |
| opened |
Raised once the drop-down editor is opened. |
| optionChanged |
Raised after a UI component property is changed. |
| paste |
Raised when the UI component's input has been pasted. |
| valueChanged |
Raised after the UI component's value is changed. |
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