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reducer.js
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reducer.js
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/**
* External dependencies
*/
import {
filter,
find,
get,
isEmpty,
keyBy,
map,
mapValues,
omit,
uniqBy,
} from 'lodash';
/**
* WordPress dependencies
*/
import { combineReducers } from '@wordpress/data';
import { __ } from '@wordpress/i18n';
/**
* Module Constants
*/
export const DEFAULT_CATEGORIES = [
{ slug: 'common', title: __( 'Common Blocks' ) },
{ slug: 'formatting', title: __( 'Formatting' ) },
{ slug: 'layout', title: __( 'Layout Elements' ) },
{ slug: 'widgets', title: __( 'Widgets' ) },
{ slug: 'embed', title: __( 'Embeds' ) },
{ slug: 'reusable', title: __( 'Reusable Blocks' ) },
];
/**
* Reducer managing the block types
*
* @param {Object} state Current state.
* @param {Object} action Dispatched action.
*
* @return {Object} Updated state.
*/
export function blockTypes( state = {}, action ) {
switch ( action.type ) {
case 'ADD_BLOCK_TYPES':
return {
...state,
...keyBy(
map( action.blockTypes, ( blockType ) => omit( blockType, 'styles ' ) ),
'name'
),
};
case 'REMOVE_BLOCK_TYPES':
return omit( state, action.names );
}
return state;
}
/**
* Reducer managing the block style variations.
*
* @param {Object} state Current state.
* @param {Object} action Dispatched action.
*
* @return {Object} Updated state.
*/
export function blockStyles( state = {}, action ) {
switch ( action.type ) {
case 'ADD_BLOCK_TYPES':
return {
...state,
...mapValues( keyBy( action.blockTypes, 'name' ), ( blockType ) => {
return uniqBy( [
...get( blockType, [ 'styles' ], [] ),
...get( state, [ blockType.name ], [] ),
], ( style ) => style.name );
} ),
};
case 'ADD_BLOCK_STYLES':
return {
...state,
[ action.blockName ]: uniqBy( [
...get( state, [ action.blockName ], [] ),
...( action.styles ),
], ( style ) => style.name ),
};
case 'REMOVE_BLOCK_STYLES':
return {
...state,
[ action.blockName ]: filter(
get( state, [ action.blockName ], [] ),
( style ) => action.styleNames.indexOf( style.name ) === -1,
),
};
}
return state;
}
/**
* Higher-order Reducer creating a reducer keeping track of given block name.
*
* @param {string} setActionType Action type.
*
* @return {function} Reducer.
*/
export function createBlockNameSetterReducer( setActionType ) {
return ( state = null, action ) => {
switch ( action.type ) {
case 'REMOVE_BLOCK_TYPES':
if ( action.names.indexOf( state ) !== -1 ) {
return null;
}
return state;
case setActionType:
return action.name || null;
}
return state;
};
}
export const defaultBlockName = createBlockNameSetterReducer( 'SET_DEFAULT_BLOCK_NAME' );
export const freeformFallbackBlockName = createBlockNameSetterReducer( 'SET_FREEFORM_FALLBACK_BLOCK_NAME' );
export const unregisteredFallbackBlockName = createBlockNameSetterReducer( 'SET_UNREGISTERED_FALLBACK_BLOCK_NAME' );
/**
* Reducer managing the categories
*
* @param {Object} state Current state.
* @param {Object} action Dispatched action.
*
* @return {Object} Updated state.
*/
export function categories( state = DEFAULT_CATEGORIES, action ) {
switch ( action.type ) {
case 'SET_CATEGORIES':
return action.categories || [];
case 'UPDATE_CATEGORY': {
if ( ! action.category || isEmpty( action.category ) ) {
return state;
}
const categoryToChange = find( state, [ 'slug', action.slug ] );
if ( categoryToChange ) {
return map( state, ( category ) => {
if ( category.slug === action.slug ) {
return {
...category,
...action.category,
};
}
return category;
} );
}
}
}
return state;
}
export default combineReducers( {
blockTypes,
blockStyles,
defaultBlockName,
freeformFallbackBlockName,
unregisteredFallbackBlockName,
categories,
} );