Angular Common - Utils - ui - themes
An object that serves as a namespace for the methods that work with DevExtreme CSS Themes.
current(themeName)
Sets a theme with a specific name.
The theme's name.
The theme name passed as a parameter should be the value of the data-theme attribute used within the rel="dx-theme" links to the theme. For instance, if you have links to two of your themes...
<link rel="dx-theme" data-theme="generic.mytheme-dark" href="css/mytheme-dark.css" data-active="true"> <link rel="dx-theme" data-theme="generic.mytheme-light" href="css/mytheme-light.css" data-active="false">
... you can switch between them as shown in the code below. Note that you should specify a callback function that repaints all UI components after the theme has been loaded using the ready(callback) method.
jQuery
DevExpress.ui.themes.ready(function () { $("#dataGridContainer").dxDataGrid("repaint"); // Call other UI components' repaint() method here }); DevExpress.ui.themes.current('mytheme-light'); // DevExpress.ui.themes.current('mytheme-dark');
Angular
import themes from "devextreme/ui/themes"; import { Component, ViewChild } from "@angular/core"; import { DxDataGridComponent, DxButtonComponent } from "devextreme-angular"; @Component({ selector: 'my-app', template: ` <dx-data-grid [dataSource]="dataSource"></dx-data-grid> <dx-button text="Change Theme" (onClick)="changeTheme()"></dx-button> ` }) export class AppComponent { @ViewChild(DxDataGridComponent, { static: false }) dataGrid: DxDataGridComponent @ViewChild(DxButtonComponent, { static: false }) button: DxButtonComponent // Prior to Angular 8 // @ViewChild(DxDataGridComponent) dataGrid: DxDataGridComponent // @ViewChild(DxButtonComponent) button: DxButtonComponent changeTheme() { themes.ready(() => { this.dataGrid.instance.repaint(); this.button.instance.repaint(); }); themes.current('mytheme-light'); // themes.current('mytheme-dark'); } }
Refer to the Predefined Themes article for details on the themes that are supplied with DevExtreme.
initialized(callback)
Specifies a function to be executed after a theme is loaded.
The function.
In some situations, UI components may apply their configuration or calculate their sizes before a theme is loaded. If you encounter issues with component appearance, use initialized(callback) to ensure that all styles are applied:
Angular
import themes from 'devextreme/ui/themes'; // ... themes.initialized(() => { platformBrowserDynamic().bootstrapModule(AppModule) .catch(err => console.error(err)); });
Vue
import { createApp } from "vue"; import App from "./App.vue"; import themes from "devextreme/ui/themes"; themes.initialized(() => createApp(App).mount("#app"));
React
import React from "react"; import ReactDOM from "react-dom"; import App from "./App.js"; import themes from "devextreme/ui/themes"; themes.initialized(() => ReactDOM.render(<App />, document.getElementById("app")) );
ready(callback)
Specifies a function to be executed each time a theme is switched.
The function.
Refer to the current(themeName) description for a code example.
If you have technical questions, please create a support ticket in the DevExpress Support Center.