Combobox

Utilities for adding combobox to your editor.

Mention PluginSlash Command PluginEmoji Plugin

The TriggerComboboxPluginOptions configures your plugin to insert a combobox input element when the user types a specified trigger character.

For example:

  • Mention plugin inserts a combobox when typing @
  • Slash Command plugin activates with /
  • Emoji plugin shows suggestions with :

Usage

Create an input plugin for the combobox:

const ComboboxInputPlugin = createPlatePlugin({
  key: 'combobox_input',
  node: {
    isElement: true,
    isInline: true,
    isVoid: true,
  },
});

Create your main plugin with withTriggerCombobox:

const MyPlugin = createPlatePlugin({
  key: 'my_plugin',
  extendEditor: withTriggerCombobox,
  // Plugin node options
  node: {
    isElement: true,
    isInline: true,
    isVoid: true,
  },
  // Combobox options
  options: {
    createComboboxInput: (trigger) => ({
      children: [{ text: '' }],
      trigger,
      type: ComboboxInputPlugin.key,
    }),
    trigger: '@',
    triggerPreviousCharPattern: /^\s?$/,
  },
  // Include the input plugin
  plugins: [ComboboxInputPlugin],
});

The input element component can be built using Inline Combobox.

Examples

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Types

TriggerComboboxPluginOptions

Parameters

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    Function to create the input node when trigger is activated.

    Character(s) that trigger the combobox. Can be:

    • A single character (e.g. '@')
    • An array of characters
    • A regular expression

    Pattern to match the character before trigger.

    • Example: /^\s?$/ matches start of line or space

    Custom query function to control when trigger is active.

Hooks

useComboboxInput

Hook for managing combobox input behavior and keyboard interactions.

Parameters

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Returns

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    Function to cancel the input.

    Function to remove the input node.

Example:

const MyCombobox = () => {
  const inputRef = useRef<HTMLInputElement>(null);
  const cursorState = useHTMLInputCursorState(inputRef);
 
  const { props: inputProps, removeInput } = useComboboxInput({
    ref: inputRef,
    cursorState,
    cancelInputOnBlur: false,
    onCancelInput: (cause) => {
      if (cause !== 'backspace') {
        insertText(editor, trigger + value);
      }
      if (cause === 'arrowLeft' || cause === 'arrowRight') {
        moveSelection(editor, {
          distance: 1,
          reverse: cause === 'arrowLeft',
        });
      }
    },
  });
 
  return <input ref={inputRef} {...inputProps} />;
};

useHTMLInputCursorState

Hook for tracking cursor position in an HTML input element.

Parameters

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    Reference to the input element to track.

Returns

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