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import { Injectable } from '@angular/core'
@Injectable()
export class ThemeService {
private theme = document.querySelector('body')
private previousTheme = {}
constructor () {
// initialise the alternative theme with dark theme colors
this.previousTheme['mainBackgroundColor'] = '#111111'
this.previousTheme['mainForegroundColor'] = '#fff'
this.previousTheme['submenuColor'] = 'rgb(32,32,32)'
this.previousTheme['inputColor'] = 'gray'
this.previousTheme['inputPlaceholderColor'] = '#fff'
}
toggleDarkTheme () {
// switch properties
this.switchProperty('mainBackgroundColor')
this.switchProperty('mainForegroundColor')
this.switchProperty('submenuColor')
this.switchProperty('inputColor')
this.switchProperty('inputPlaceholderColor')
}
private switchProperty (property, newValue?) {
const propertyOldvalue = window.getComputedStyle(this.theme).getPropertyValue('--' + property)
this.theme.style.setProperty('--' + property, (newValue) ? newValue : this.previousTheme[property])
this.previousTheme[property] = propertyOldvalue
}
}
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