Keyboard Support

An end user can use the following keys to interact with the widget.

Key Action
← → ↑ ↓ Moves the color pointer.
Ctrl + ↑ Moves the RGB slider up.
Ctrl + ↓ Moves the RGB slider down.
Ctrl + ← Moves the transparency slider left.
Ctrl + → Moves the transparency slider right.
Enter Selects the color.

You can implement a custom handler for a key using the registerKeyHandler(key, handler) method.

jQuery
JavaScript
function registerKeyHandlers () {
    const colorBox = $("#colorBoxContainer").dxColorBox("instance");
    colorBox.registerKeyHandler("backspace", function(e) {
        // The argument "e" contains information on the event
    });
    colorBox.registerKeyHandler("space", function(e) {
        // ...
    });
}
Angular
TypeScript
import { ..., ViewChild, AfterViewInit } from '@angular/core';
import { DxColorBoxModule, DxColorBoxComponent } from 'devextreme-angular';
// ...
export class AppComponent implements AfterViewInit {
    @ViewChild(DxColorBoxComponent, { static: false }) colorBox: DxColorBoxComponent;
    // Prior to Angular 8
    // @ViewChild(DxColorBoxComponent) colorBox: DxColorBoxComponent;

    ngAfterViewInit () {
        this.colorBox.instance.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.colorBox.instance.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}
@NgModule({
    imports: [
        // ...
        DxColorBoxModule
    ],
    // ...
})
Vue
<template>
    <DxColorBox :ref="myColorBoxRef" />
</template>
<script>
import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';

import DxColorBox from 'devextreme-vue/color-box';

const myColorBoxRef = 'my-color-box';

export default {
    components: {
        DxColorBox
    },
    data() {
        return {
            myColorBoxRef
        }
    },
    computed: {
        colorBox: function() {
            return this.$refs[myColorBoxRef].instance;
        }
    },
    mounted: function() {
        this.colorBox.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.colorBox.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}
</script>
React
App.js
import React from 'react';
import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';

import { ColorBox } from 'devextreme-react/color-box';

class App extends React.Component {
    constructor(props) {
        super(props);

        this.colorBoxRef = React.createRef();
    }

    render() {
        return (
            <ColorBox ref={this.colorBoxRef} />
        );
    }

    get colorBox() {
        return this.colorBoxRef.current.instance;
    }

    componentDidMount() {
        this.colorBox.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.colorBox.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}

export default App;
See Also