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interface ThemeBase {
defaultTheme: string;
variations: {
colors: string[];
lighten: number;
darken: number;
};
themes: IDictionary<{
dark?: boolean;
colors: IDictionary<string>;
}>;
}
/**
* Interface for the default Zeedhi Theme definition
*/
interface IDefaultTheme extends ThemeBase {
minifyTheme: (css: string) => string;
zeedhi: IDictionary<IDictionary<string>>;
}
/**
* Interface for the Theme defined in the app
*/
export interface ITheme extends Partial<IDefaultTheme> {
cspNonce?: string;
}
/**
* Interface for the Theme to be returned by initTheme
*/
interface IMaterialTheme extends ThemeBase {
cspNonce?: string;
}
const defaultThemes: IDefaultTheme = {
defaultTheme: 'light',
minifyTheme: (css: string) => css.replace(/[\r\n|\r|\n]/g, ''),
variations: {
colors: ['primary', 'secondary', 'grey'],
darken: 4,
lighten: 5,
},
themes: {
light: {
colors: {
primary: '#772583',
secondary: '#A0A0A0',
background: '#FFFFFF',
surface: '#FFFFFF',
accent: '#A08CA0',
error: '#FF5252',
info: '#2196F3',
success: '#4CAF50',
warning: '#FFC107',
anchor: '#772583',
grey: '#6A6A6A',
},
},
dark: {
colors: {
primary: '#AE5AB9',
secondary: '#A0A0A0',
background: '#121212',
surface: '#1E1E1E',
accent: '#FF4081',
error: '#FF5252',
info: '#2196F3',
success: '#4CAF50',
warning: '#FB8C00',
anchor: '#772583',
grey: '#6A6A6A',
},
},
},
zeedhi: {
light: {
'scrollbar-track': '#F0F0F0',
'scrollbar-thumb': '#D4D4D4',
},
dark: {
'scrollbar-track': '#252525',
'scrollbar-thumb': '#6A6A6A',
},
variables: {
'default-padding': '16px',
'font-headline-size': '20px',
'font-headline-weight': '400',
'font-title-size': '18px',
'font-title-weight': '400',
'font-body1-size': '13px',
'font-body1-weight': '400',
'font-body2-size': '13px',
'font-body2-weight': '500',
'font-body3-size': '14px',
'font-body3-weight': '400',
'font-body4-size': '14px',
'font-body4-weight': '500',
'font-caption-size': '11px',
'font-caption-weight': '400',
},
},
};
function createStyleElement() {
const styleEl = document.createElement('style');
styleEl.type = 'text/css';
styleEl.id = 'zeedhi-theme-stylesheet';
document.head.appendChild(styleEl);
return styleEl;
}
function genZeedhiTheme(
zeedhiVariables: IDictionary<IDictionary<string>>,
defaultTheme: string,
minifyTheme: (css: string) => string = defaultThemes.minifyTheme,
cspNonce?: string,
) {
let css = '';
// TODO: re-factory this forEach for better performance
Object.keys(zeedhiVariables.variables).forEach((key) => {
css += ` --zd-${key}: ${zeedhiVariables.variables[key]};\n`;
});
// TODO: re-factory this forEach for better performance
const themeColors = zeedhiVariables[defaultTheme] || {};
Object.keys(themeColors).forEach((key) => {
css += ` --zd-${key}: ${themeColors[key]};\n`;
});
css = `:root {\n${css}}\n\n`;
let styleEl = document.getElementById('zeedhi-theme-stylesheet');
if (!styleEl) {
styleEl = createStyleElement();
}
styleEl.innerHTML = minifyTheme(css);
if (cspNonce) {
styleEl.setAttribute('nonce', cspNonce);
}
}
const initTheme = (theme?: ITheme): IMaterialTheme => {
const newTheme: IMaterialTheme = {
defaultTheme: defaultThemes.defaultTheme,
variations: { ...defaultThemes.variations },
themes: { ...defaultThemes.themes },
};
const zeedhiVariables = { ...defaultThemes.zeedhi };
if (theme) {
newTheme.defaultTheme = theme.defaultTheme ?? defaultThemes.defaultTheme;
newTheme.cspNonce = theme.cspNonce;
if (theme.variations) {
newTheme.variations = { ...defaultThemes.variations, ...theme.variations };
}
if (theme.themes) {
// TODO: re-factory this forEach for better performance
Object.keys(theme.themes).forEach((key) => {
if (!defaultThemes.themes[key]) {
newTheme.themes[key] = { ...theme.themes![key] };
return;
}
newTheme.themes[key].dark = theme.themes![key].dark ?? defaultThemes.themes[key].dark;
newTheme.themes[key].colors = {
...defaultThemes.themes[key].colors,
...theme.themes![key].colors,
};
});
}
if (theme.zeedhi) {
// TODO: re-factory this forEach for better performance
Object.keys(theme.zeedhi).forEach((key) => {
if (!defaultThemes.zeedhi[key]) {
zeedhiVariables[key] = { ...theme.zeedhi![key] };
return;
}
zeedhiVariables[key] = { ...defaultThemes.zeedhi[key], ...theme.zeedhi![key] };
});
}
}
genZeedhiTheme(zeedhiVariables, newTheme.defaultTheme, theme?.minifyTheme, theme?.cspNonce);
return newTheme;
};
export { initTheme };
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