@wordpress/commands/build-module/store/reducer.js

Handles the commands menu.

/**
 * WordPress dependencies
 */
import { combineReducers } from '@wordpress/data';

/**
 * Reducer returning the registered commands
 *
 * @param {Object} state  Current state.
 * @param {Object} action Dispatched action.
 *
 * @return {Object} Updated state.
 */
function commands(state = {}, action) {
  switch (action.type) {
    case 'REGISTER_COMMAND':
      return {
        ...state,
        [action.name]: {
          name: action.name,
          label: action.label,
          searchLabel: action.searchLabel,
          context: action.context,
          callback: action.callback,
          icon: action.icon
        }
      };
    case 'UNREGISTER_COMMAND':
      {
        const {
          [action.name]: _,
          ...remainingState
        } = state;
        return remainingState;
      }
  }
  return state;
}

/**
 * Reducer returning the command loaders
 *
 * @param {Object} state  Current state.
 * @param {Object} action Dispatched action.
 *
 * @return {Object} Updated state.
 */
function commandLoaders(state = {}, action) {
  switch (action.type) {
    case 'REGISTER_COMMAND_LOADER':
      return {
        ...state,
        [action.name]: {
          name: action.name,
          context: action.context,
          hook: action.hook
        }
      };
    case 'UNREGISTER_COMMAND_LOADER':
      {
        const {
          [action.name]: _,
          ...remainingState
        } = state;
        return remainingState;
      }
  }
  return state;
}

/**
 * Reducer returning the command palette open state.
 *
 * @param {Object} state  Current state.
 * @param {Object} action Dispatched action.
 *
 * @return {boolean} Updated state.
 */
function isOpen(state = false, action) {
  switch (action.type) {
    case 'OPEN':
      return true;
    case 'CLOSE':
      return false;
  }
  return state;
}

/**
 * Reducer returning the command palette's active context.
 *
 * @param {Object} state  Current state.
 * @param {Object} action Dispatched action.
 *
 * @return {boolean} Updated state.
 */
function context(state = 'root', action) {
  switch (action.type) {
    case 'SET_CONTEXT':
      return action.context;
  }
  return state;
}
const reducer = combineReducers({
  commands,
  commandLoaders,
  isOpen,
  context
});
export default reducer;
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