@storybook/addon-backgrounds/dist/index.mjs

Switch backgrounds to view components in different settings

import { useEffect, useMemo, definePreview } from 'storybook/internal/preview-api';
import { global } from '@storybook/global';
import { logger } from 'storybook/internal/client-logger';
import { dedent } from 'ts-dedent';

var __defProp=Object.defineProperty;var __export=(target,all)=>{for(var name in all)__defProp(target,name,{get:all[name],enumerable:!0});};var preview_exports={};__export(preview_exports,{decorators:()=>decorators,initialGlobals:()=>initialGlobals,parameters:()=>parameters});var PARAM_KEY="backgrounds";var DEFAULT_BACKGROUNDS={light:{name:"light",value:"#F8F8F8"},dark:{name:"dark",value:"#333"}};var{document,window}=global,isReduceMotionEnabled=()=>!!window?.matchMedia("(prefers-reduced-motion: reduce)")?.matches,clearStyles=selector=>{(Array.isArray(selector)?selector:[selector]).forEach(clearStyle);},clearStyle=selector=>{let element=document.getElementById(selector);element&&element.parentElement?.removeChild(element);},addGridStyle=(selector,css)=>{let existingStyle=document.getElementById(selector);if(existingStyle)existingStyle.innerHTML!==css&&(existingStyle.innerHTML=css);else {let style=document.createElement("style");style.setAttribute("id",selector),style.innerHTML=css,document.head.appendChild(style);}},addBackgroundStyle=(selector,css,storyId)=>{let existingStyle=document.getElementById(selector);if(existingStyle)existingStyle.innerHTML!==css&&(existingStyle.innerHTML=css);else {let style=document.createElement("style");style.setAttribute("id",selector),style.innerHTML=css;let gridStyleSelector=`addon-backgrounds-grid${storyId?`-docs-${storyId}`:""}`,existingGridStyle=document.getElementById(gridStyleSelector);existingGridStyle?existingGridStyle.parentElement?.insertBefore(style,existingGridStyle):document.head.appendChild(style);}};var defaultGrid={cellSize:100,cellAmount:10,opacity:.8},BG_SELECTOR_BASE="addon-backgrounds",GRID_SELECTOR_BASE="addon-backgrounds-grid",transitionStyle=isReduceMotionEnabled()?"":"transition: background-color 0.3s;",withBackgroundAndGrid=(StoryFn,context)=>{let{globals,parameters:parameters2,viewMode,id}=context,{options=DEFAULT_BACKGROUNDS,disable,grid=defaultGrid}=parameters2[PARAM_KEY]||{},data=globals[PARAM_KEY]||{},backgroundName=data.value,item=backgroundName?options[backgroundName]:void 0,value=item?.value||"transparent",showGrid=data.grid||!1,shownBackground=!!item&&!disable,backgroundSelector=viewMode==="docs"?`#anchor--${id} .docs-story`:".sb-show-main",gridSelector=viewMode==="docs"?`#anchor--${id} .docs-story`:".sb-show-main",isLayoutPadded=parameters2.layout===void 0||parameters2.layout==="padded",defaultOffset=viewMode==="docs"?20:isLayoutPadded?16:0,{cellAmount,cellSize,opacity,offsetX=defaultOffset,offsetY=defaultOffset}=grid,backgroundSelectorId=viewMode==="docs"?`${BG_SELECTOR_BASE}-docs-${id}`:`${BG_SELECTOR_BASE}-color`,backgroundTarget=viewMode==="docs"?id:null;useEffect(()=>{let backgroundStyles=`
    ${backgroundSelector} {
      background: ${value} !important;
      ${transitionStyle}
      }`;if(!shownBackground){clearStyles(backgroundSelectorId);return}addBackgroundStyle(backgroundSelectorId,backgroundStyles,backgroundTarget);},[backgroundSelector,backgroundSelectorId,backgroundTarget,shownBackground,value]);let gridSelectorId=viewMode==="docs"?`${GRID_SELECTOR_BASE}-docs-${id}`:`${GRID_SELECTOR_BASE}`;return useEffect(()=>{if(!showGrid){clearStyles(gridSelectorId);return}let gridSize=[`${cellSize*cellAmount}px ${cellSize*cellAmount}px`,`${cellSize*cellAmount}px ${cellSize*cellAmount}px`,`${cellSize}px ${cellSize}px`,`${cellSize}px ${cellSize}px`].join(", "),gridStyles=`
        ${gridSelector} {
          background-size: ${gridSize} !important;
          background-position: ${offsetX}px ${offsetY}px, ${offsetX}px ${offsetY}px, ${offsetX}px ${offsetY}px, ${offsetX}px ${offsetY}px !important;
          background-blend-mode: difference !important;
          background-image: linear-gradient(rgba(130, 130, 130, ${opacity}) 1px, transparent 1px),
           linear-gradient(90deg, rgba(130, 130, 130, ${opacity}) 1px, transparent 1px),
           linear-gradient(rgba(130, 130, 130, ${opacity/2}) 1px, transparent 1px),
           linear-gradient(90deg, rgba(130, 130, 130, ${opacity/2}) 1px, transparent 1px) !important;
        }
      `;addGridStyle(gridSelectorId,gridStyles);},[cellAmount,cellSize,gridSelector,gridSelectorId,showGrid,offsetX,offsetY,opacity]),StoryFn()};var getBackgroundColorByName=(currentSelectedValue,backgrounds=[],defaultName)=>{if(currentSelectedValue==="transparent")return "transparent";if(backgrounds.find(background=>background.value===currentSelectedValue)||currentSelectedValue)return currentSelectedValue;let defaultBackground=backgrounds.find(background=>background.name===defaultName);if(defaultBackground)return defaultBackground.value;if(defaultName){let availableColors=backgrounds.map(background=>background.name).join(", ");logger.warn(dedent`
        Backgrounds Addon: could not find the default color "${defaultName}".
        These are the available colors for your story based on your configuration:
        ${availableColors}.
      `);}return "transparent"};var withBackground=(StoryFn,context)=>{let{globals,parameters:parameters2}=context,globalsBackgroundColor=globals[PARAM_KEY]?.value,backgroundsConfig=parameters2[PARAM_KEY],selectedBackgroundColor=useMemo(()=>backgroundsConfig.disable?"transparent":getBackgroundColorByName(globalsBackgroundColor,backgroundsConfig.values,backgroundsConfig.default),[backgroundsConfig,globalsBackgroundColor]),isActive=useMemo(()=>selectedBackgroundColor&&selectedBackgroundColor!=="transparent",[selectedBackgroundColor]),selector=context.viewMode==="docs"?`#anchor--${context.id} .docs-story`:".sb-show-main",backgroundStyles=useMemo(()=>`
      ${selector} {
        background: ${selectedBackgroundColor} !important;
        ${isReduceMotionEnabled()?"":"transition: background-color 0.3s;"}
      }
    `,[selectedBackgroundColor,selector]);return useEffect(()=>{let selectorId=context.viewMode==="docs"?`addon-backgrounds-docs-${context.id}`:"addon-backgrounds-color";if(!isActive){clearStyles(selectorId);return}addBackgroundStyle(selectorId,backgroundStyles,context.viewMode==="docs"?context.id:null);},[isActive,backgroundStyles,context]),StoryFn()};var withGrid=(StoryFn,context)=>{let{globals,parameters:parameters2}=context,gridParameters=parameters2[PARAM_KEY].grid,isActive=globals[PARAM_KEY]?.grid===!0&&gridParameters.disable!==!0,{cellAmount,cellSize,opacity}=gridParameters,isInDocs=context.viewMode==="docs",defaultOffset=parameters2.layout===void 0||parameters2.layout==="padded"?16:0,offsetX=gridParameters.offsetX??(isInDocs?20:defaultOffset),offsetY=gridParameters.offsetY??(isInDocs?20:defaultOffset),gridStyles=useMemo(()=>{let selector=context.viewMode==="docs"?`#anchor--${context.id} .docs-story`:".sb-show-main",backgroundSize=[`${cellSize*cellAmount}px ${cellSize*cellAmount}px`,`${cellSize*cellAmount}px ${cellSize*cellAmount}px`,`${cellSize}px ${cellSize}px`,`${cellSize}px ${cellSize}px`].join(", ");return `
      ${selector} {
        background-size: ${backgroundSize} !important;
        background-position: ${offsetX}px ${offsetY}px, ${offsetX}px ${offsetY}px, ${offsetX}px ${offsetY}px, ${offsetX}px ${offsetY}px !important;
        background-blend-mode: difference !important;
        background-image: linear-gradient(rgba(130, 130, 130, ${opacity}) 1px, transparent 1px),
         linear-gradient(90deg, rgba(130, 130, 130, ${opacity}) 1px, transparent 1px),
         linear-gradient(rgba(130, 130, 130, ${opacity/2}) 1px, transparent 1px),
         linear-gradient(90deg, rgba(130, 130, 130, ${opacity/2}) 1px, transparent 1px) !important;
      }
    `},[cellSize]);return useEffect(()=>{let selectorId=context.viewMode==="docs"?`addon-backgrounds-grid-docs-${context.id}`:"addon-backgrounds-grid";if(!isActive){clearStyles(selectorId);return}addGridStyle(selectorId,gridStyles);},[isActive,gridStyles,context]),StoryFn()};var decorators=globalThis.FEATURES?.backgroundsStoryGlobals?[withBackgroundAndGrid]:[withGrid,withBackground],parameters={[PARAM_KEY]:{grid:{cellSize:20,opacity:.5,cellAmount:5},disable:!1,...!globalThis.FEATURES?.backgroundsStoryGlobals&&{values:Object.values(DEFAULT_BACKGROUNDS)}}},modern={[PARAM_KEY]:{value:void 0,grid:!1}},initialGlobals=globalThis.FEATURES?.backgroundsStoryGlobals?modern:{[PARAM_KEY]:null};var index_default=()=>definePreview(preview_exports);

export { index_default as default };