+ private loadAndSetFromLocalStorage () {
+ const lastActiveThemeString = this.localStorageService.getItem(UserLocalStorageKeys.LAST_ACTIVE_THEME)
+ if (!lastActiveThemeString) return
+
+ try {
+ const lastActiveTheme = JSON.parse(lastActiveThemeString)
+ this.themeFromLocalStorage = lastActiveTheme
+
+ this.injectThemes([ lastActiveTheme ], true)
+ this.updateCurrentTheme()
+ } catch (err) {
+ logger.error('Cannot parse last active theme.', err)
+ return
+ }
+ }
+
+ private removeThemePlugins (themeName: string) {
+ const oldTheme = this.getTheme(themeName)
+ if (oldTheme) {
+ logger.info(`Removing scripts of old theme ${themeName}.`)
+ this.pluginService.removePlugin(oldTheme)
+ }
+ }
+
+ private removeThemeFromLocalStorageIfNeeded (themes: ServerConfigTheme[]) {
+ if (!this.themeFromLocalStorage) return
+
+ const loadedTheme = themes.find(t => t.name === this.themeFromLocalStorage.name)
+ if (!loadedTheme || loadedTheme.version !== this.themeFromLocalStorage.version) {
+ // Need to remove this theme: we loaded an old version or a theme that does not exist anymore
+ this.removeThemePlugins(this.themeFromLocalStorage.name)
+ this.oldThemeName = undefined
+
+ const head = this.getHeadElement()
+ for (const htmlLinkElement of this.themeDOMLinksFromLocalStorage) {
+ head.removeChild(htmlLinkElement)
+ }
+
+ this.themeFromLocalStorage = undefined
+ this.themeDOMLinksFromLocalStorage = []
+ }
+ }
+
+ private getHeadElement () {
+ return document.getElementsByTagName('head')[0]
+ }
+