React TreeView - Keyboard Support
An end user can use the following keys to interact with the UI component.
Key | Action |
---|---|
Shift + Mouse Wheel | Scrolls the content left/right if the scrollDirection property is "horizontal" or "both". |
↑ / ↓ | Moves focus to the previous/next node. |
Home / End | Moves focus to the first/last node. |
→ | Expands the node. |
← | Collapses the node. |
Asterisk Sign (*) | Expands all nodes. Available only if expandAllEnabled is set to true. |
Minus Sign (-) | Collapses all nodes. Available only if expandAllEnabled is set to true. |
Enter or Space | Selects the node. |
Shift + ↑ / Shift + ↓ | Extends selection up/down by one node. |
Shift + Home | Extends selection up to the first node. |
Shift + End | Extends selection down to the last node. |
You can implement a custom handler for a key using the registerKeyHandler(key, handler) method.
- <template>
- <DxTreeView :ref="myTreeViewRef" />
- </template>
- <script>
- import 'devextreme/dist/css/dx.common.css';
- import 'devextreme/dist/css/dx.light.css';
- import DxTreeView from 'devextreme-vue/tree-view';
- const myTreeViewRef = 'my-tree-view';
- export default {
- components: {
- DxTreeView
- },
- data() {
- return {
- myTreeViewRef
- }
- },
- computed: {
- treeView: function() {
- return this.$refs[myTreeViewRef].instance;
- }
- },
- mounted: function() {
- this.treeView.registerKeyHandler('backspace', function(e) {
- // The argument "e" contains information on the event
- });
- this.treeView.registerKeyHandler('space', function(e) {
- // ...
- });
- }
- }
- </script>
See Also
- Call Methods: Angular | Vue | React | jQuery | AngularJS | Knockout | ASP.NET MVC 5 | ASP.NET Core
- TreeView Demos
- TreeView API Reference
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