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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,102 +1,72 @@ | ||
| import React, { useEffect, useState } from "react"; | ||
| import React, { useCallback, useEffect, useState } from "react"; | ||
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| import { Element } from "../Element/Element"; | ||
| import type { UseThemeProps } from "./types"; | ||
| import { CommonAndHTMLProps } from "../Element/constants"; | ||
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| export type ThemeProviderElementType = HTMLDivElement; | ||
| export type RenderProps = () => JSX.Element; | ||
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| const storageKey = "fictoan-theme"; | ||
| const themes = ["light", "dark"]; | ||
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| const ThemeContext = React.createContext<UseThemeProps | undefined>(undefined); | ||
| const defaultContext: UseThemeProps = { setTheme: (_) => {} }; | ||
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| export const useTheme = () => React.useContext(ThemeContext) ?? defaultContext; | ||
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| export interface ThemeProviderProps extends CommonAndHTMLProps<ThemeProviderElementType> { | ||
| theme?: { | ||
| [key: string]: string; | ||
| }; | ||
| customColors?: { | ||
| [key: string]: string; | ||
| }; | ||
| currentTheme?: string; | ||
| } | ||
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|
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| const getTheme = (key: string, fallback?: string) => { | ||
| let theme; | ||
| try { | ||
| theme = localStorage.getItem(key) || undefined; | ||
| } catch (e) { | ||
| // Unsupported | ||
| } | ||
| return theme || fallback; | ||
| }; | ||
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| export const ThemeProvider = React.forwardRef( | ||
| ( | ||
| { theme, customColors, currentTheme, children, ...props }: ThemeProviderProps, | ||
| ref: React.Ref<ThemeProviderElementType> | ||
| ) => { | ||
| ({ currentTheme, children, ...props }: ThemeProviderProps, ref: React.Ref<ThemeProviderElementType>) => { | ||
| const [shouldRender, setShouldRender] = useState<boolean>(false); | ||
| const [themeState, setThemeState] = React.useState(() => getTheme(storageKey, "theme-light")); | ||
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| useEffect(() => { | ||
| if (theme) { | ||
| const styleTag = getStyleTag("fictoan-theme"); | ||
| addCssVariables(styleTag, theme); | ||
| if (!shouldRender) { | ||
| setShouldRender(true); | ||
| const setTheme = useCallback( | ||
| (newTheme: any) => { | ||
| if (!themes.includes(newTheme)) { | ||
| newTheme = "light"; | ||
| } | ||
| } | ||
|
|
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| return () => { | ||
| const styleTag = getStyleTag("fictoan-theme"); | ||
| styleTag.innerHTML = ""; | ||
| }; | ||
| }, [theme]); | ||
|
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| useEffect(() => { | ||
| if (customColors) { | ||
| const styleTag = getStyleTag("fictoan-custom-colors"); | ||
| addCssVariables(styleTag, customColors); | ||
| const styles = Object.keys(customColors).map( | ||
| (colorName) => ` | ||
| .bg-${colorName} {background-color: var(--${colorName});} | ||
| .text-${colorName} {color: var(--${colorName}); } | ||
| .fill-${colorName} {fill: var(--${colorName});} | ||
| .stroke-${colorName} {stroke: var(--${colorName});} | ||
| .border-${colorName} {border-color: var(--${colorName});}` | ||
| ); | ||
| styleTag.appendChild(document.createTextNode(styles.join("\n"))); | ||
| document.documentElement.className = ""; | ||
| setThemeState(`theme-${newTheme}`); | ||
| document.documentElement.classList.add(`theme-${newTheme}`); | ||
| if (!shouldRender) { | ||
| setShouldRender(true); | ||
| } | ||
| } | ||
|
|
||
| return () => { | ||
| const styleTag = getStyleTag("fictoan-custom-colors"); | ||
| styleTag.innerHTML = ""; | ||
| }; | ||
| }, [customColors]); | ||
| // Save to storage | ||
| try { | ||
| localStorage.setItem(storageKey, `theme-${newTheme}`); | ||
| } catch (e) { | ||
| // Unsupported | ||
| } | ||
| }, | ||
| [themeState] | ||
| ); | ||
|
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| useEffect(() => { | ||
| if (currentTheme) { | ||
| document.documentElement.classList.add(currentTheme); | ||
| if (!shouldRender) { | ||
| setShouldRender(true); | ||
| } | ||
| setTheme(currentTheme); | ||
| } | ||
|
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| return () => { | ||
| document.documentElement.className = ""; | ||
| }; | ||
| }, [currentTheme]); | ||
|
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| const getStyleTag = (id: string): HTMLElement => { | ||
| let styleTag = document.getElementById(id); | ||
| if (!styleTag) { | ||
| styleTag = document.createElement("style"); | ||
| styleTag.id = id; | ||
| document.head.appendChild(styleTag); | ||
| } | ||
| return styleTag; | ||
| }; | ||
|
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| const addCssVariables = (element: HTMLElement, variables: { [key: string]: string }) => { | ||
| let cssVariables: string | string[] = Object.entries(variables).map( | ||
| ([variableName, variableValue]) => `--${variableName}: ${variableValue};` | ||
| ); | ||
| cssVariables = ":root {\n" + cssVariables.join("\n") + "\n}"; | ||
| element.appendChild(document.createTextNode(cssVariables)); | ||
| }; | ||
|
|
||
| return ( | ||
| <Element<ThemeProviderElementType> as="div" data-theme-provider ref={ref} {...props}> | ||
| {shouldRender && children} | ||
| </Element> | ||
| <ThemeContext.Provider value={{ theme: themeState, setTheme }}> | ||
| <Element<ThemeProviderElementType> as="div" data-theme-provider ref={ref} {...props}> | ||
| {shouldRender && children} | ||
| </Element> | ||
| </ThemeContext.Provider> | ||
| ); | ||
| } | ||
| ); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1 @@ | ||
| export { ThemeProvider, type ThemeProviderProps } from "./ThemeProvider"; | ||
| export { ThemeProvider, type ThemeProviderProps, useTheme } from "./ThemeProvider"; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| import * as React from "react"; | ||
|
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| export interface UseThemeProps { | ||
| /** Update the theme */ | ||
| setTheme: React.Dispatch<React.SetStateAction<string>>; | ||
| /** Active theme name */ | ||
| theme?: string | undefined; | ||
| } |
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