css-theme-management

This package is intended to ease the implementation of multiple themes in your app.

How to use

1. Create an interface which extends the Theming.Theme interface
2. Add the properties, Theming.ThemeProperty have a css property value and a name, the name is used in your css to load the value via the var() function.
3. Create an extension to the Theming.Themes interface, add your theme names here.
4. Create implementations of the interfaces.
5. Provide the themes object to the ThemeManager in the ctor.
6. Choose a storage key for the local storage, pass it to the ThemeManager in the ctor.
7. To load a theme provide the theme name to the loadTheme method of the ThemeManager.

Example

//theme.ts
import { Theming } from 'css-theme-management';

export interface Theme extends Theming.Theme {
    fontColor: Theming.ThemeProperty;
    backgroundColor: Theming.ThemeProperty;  
}

//themes.ts
import { Theming } from 'css-theme-management';

interface Themes extends Theming.Themes {
    Light: Theming.Theme
}

export default Themes;

//light_theme.ts
import Theme from './theme.ts'

export const LightTheme: Theme = {
    fontColor: {
        propertyName: '--font-color',
        propertyValue: 'black'
    },
    backgroundColor: {
        propertyName: '--background-color',
        propertyValue: 'white'
    }
}

//app_themes.ts
import Themes from './themes.ts'
import LightTheme from './light_theme.ts'

const AppThemes: Themes = {
    Light: LightTheme
}

export default AppThemes;

//Where you handle changing themes.
import { ThemeManager } from 'css-theme-management';

const themeManager = new ThemeManager(Themes, THEME_STORAGE_KEYWORD);
themeManager.loadTheme('Light')

/*Your css*/
.your-class{
    color: var(--font-color);
    background: var(--background-color);
}