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

Enhanced block editor for WordPress posts.

/**
 * External dependencies
 */
import { omit, keys, isEqual } from 'lodash';
/**
 * WordPress dependencies
 */

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

import { PREFERENCES_DEFAULTS, EDITOR_SETTINGS_DEFAULTS } from './defaults';
/**
 * Returns a post attribute value, flattening nested rendered content using its
 * raw value in place of its original object form.
 *
 * @param {*} value Original value.
 *
 * @return {*} Raw value.
 */

export function getPostRawValue(value) {
  if (value && 'object' === typeof value && 'raw' in value) {
    return value.raw;
  }

  return value;
}
/**
 * Returns true if the two object arguments have the same keys, or false
 * otherwise.
 *
 * @param {Object} a First object.
 * @param {Object} b Second object.
 *
 * @return {boolean} Whether the two objects have the same keys.
 */

export function hasSameKeys(a, b) {
  return isEqual(keys(a), keys(b));
}
/**
 * Returns true if, given the currently dispatching action and the previously
 * dispatched action, the two actions are editing the same post property, or
 * false otherwise.
 *
 * @param {Object} action         Currently dispatching action.
 * @param {Object} previousAction Previously dispatched action.
 *
 * @return {boolean} Whether actions are updating the same post property.
 */

export function isUpdatingSamePostProperty(action, previousAction) {
  return action.type === 'EDIT_POST' && hasSameKeys(action.edits, previousAction.edits);
}
/**
 * Returns true if, given the currently dispatching action and the previously
 * dispatched action, the two actions are modifying the same property such that
 * undo history should be batched.
 *
 * @param {Object} action         Currently dispatching action.
 * @param {Object} previousAction Previously dispatched action.
 *
 * @return {boolean} Whether to overwrite present state.
 */

export function shouldOverwriteState(action, previousAction) {
  if (action.type === 'RESET_EDITOR_BLOCKS') {
    return !action.shouldCreateUndoLevel;
  }

  if (!previousAction || action.type !== previousAction.type) {
    return false;
  }

  return isUpdatingSamePostProperty(action, previousAction);
}
export function postId(state = null, action) {
  switch (action.type) {
    case 'SETUP_EDITOR_STATE':
    case 'RESET_POST':
      return action.post.id;
  }

  return state;
}
export function postType(state = null, action) {
  switch (action.type) {
    case 'SETUP_EDITOR_STATE':
    case 'RESET_POST':
      return action.post.type;
  }

  return state;
}
/**
 * Reducer returning whether the post blocks match the defined template or not.
 *
 * @param {Object} state  Current state.
 * @param {Object} action Dispatched action.
 *
 * @return {boolean} Updated state.
 */

export function template(state = {
  isValid: true
}, action) {
  switch (action.type) {
    case 'SET_TEMPLATE_VALIDITY':
      return { ...state,
        isValid: action.isValid
      };
  }

  return state;
}
/**
 * Reducer returning the user preferences.
 *
 * @param {Object}  state                 Current state.
 * @param {Object}  action                Dispatched action.
 *
 * @return {string} Updated state.
 */

export function preferences(state = PREFERENCES_DEFAULTS, action) {
  switch (action.type) {
    case 'ENABLE_PUBLISH_SIDEBAR':
      return { ...state,
        isPublishSidebarEnabled: true
      };

    case 'DISABLE_PUBLISH_SIDEBAR':
      return { ...state,
        isPublishSidebarEnabled: false
      };
  }

  return state;
}
/**
 * Reducer returning current network request state (whether a request to
 * the WP REST API is in progress, successful, or failed).
 *
 * @param {Object} state  Current state.
 * @param {Object} action Dispatched action.
 *
 * @return {Object} Updated state.
 */

export function saving(state = {}, action) {
  switch (action.type) {
    case 'REQUEST_POST_UPDATE_START':
    case 'REQUEST_POST_UPDATE_FINISH':
      return {
        pending: action.type === 'REQUEST_POST_UPDATE_START',
        options: action.options || {}
      };
  }

  return state;
}
/**
 * Post Lock State.
 *
 * @typedef {Object} PostLockState
 *
 * @property {boolean} isLocked       Whether the post is locked.
 * @property {?boolean} isTakeover     Whether the post editing has been taken over.
 * @property {?boolean} activePostLock Active post lock value.
 * @property {?Object}  user           User that took over the post.
 */

/**
 * Reducer returning the post lock status.
 *
 * @param {PostLockState} state  Current state.
 * @param {Object} action Dispatched action.
 *
 * @return {PostLockState} Updated state.
 */

export function postLock(state = {
  isLocked: false
}, action) {
  switch (action.type) {
    case 'UPDATE_POST_LOCK':
      return action.lock;
  }

  return state;
}
/**
 * Post saving lock.
 *
 * When post saving is locked, the post cannot be published or updated.
 *
 * @param {PostLockState} state  Current state.
 * @param {Object}        action Dispatched action.
 *
 * @return {PostLockState} Updated state.
 */

export function postSavingLock(state = {}, action) {
  switch (action.type) {
    case 'LOCK_POST_SAVING':
      return { ...state,
        [action.lockName]: true
      };

    case 'UNLOCK_POST_SAVING':
      return omit(state, action.lockName);
  }

  return state;
}
/**
 * Post autosaving lock.
 *
 * When post autosaving is locked, the post will not autosave.
 *
 * @param {PostLockState} state  Current state.
 * @param {Object}        action Dispatched action.
 *
 * @return {PostLockState} Updated state.
 */

export function postAutosavingLock(state = {}, action) {
  switch (action.type) {
    case 'LOCK_POST_AUTOSAVING':
      return { ...state,
        [action.lockName]: true
      };

    case 'UNLOCK_POST_AUTOSAVING':
      return omit(state, action.lockName);
  }

  return state;
}
/**
 * Reducer returning whether the editor is ready to be rendered.
 * The editor is considered ready to be rendered once
 * the post object is loaded properly and the initial blocks parsed.
 *
 * @param {boolean} state
 * @param {Object} action
 *
 * @return {boolean} Updated state.
 */

export function isReady(state = false, action) {
  switch (action.type) {
    case 'SETUP_EDITOR_STATE':
      return true;

    case 'TEAR_DOWN_EDITOR':
      return false;
  }

  return state;
}
/**
 * Reducer returning the post editor setting.
 *
 * @param {Object} state  Current state.
 * @param {Object} action Dispatched action.
 *
 * @return {Object} Updated state.
 */

export function editorSettings(state = EDITOR_SETTINGS_DEFAULTS, action) {
  switch (action.type) {
    case 'UPDATE_EDITOR_SETTINGS':
      return { ...state,
        ...action.settings
      };
  }

  return state;
}
export default combineReducers({
  postId,
  postType,
  preferences,
  saving,
  postLock,
  template,
  postSavingLock,
  isReady,
  editorSettings,
  postAutosavingLock
});
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