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48 lines
2.8 KiB
Markdown
48 lines
2.8 KiB
Markdown
---
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category: Components
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type: Navigation
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title: Dropdown
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---
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A dropdown list.
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## When To Use
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If there are too many operations to display, you can wrap them in a `Dropdown`. By clicking/hovering on the trigger, a dropdown menu should appear, which allows you to choose one option and execute relevant actions.
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## API
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### Dropdown
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| Property | Description | Type | Default |
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| -------- | ----------- | ---- | ------- |
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| disabled | whether the dropdown menu is disabled | boolean | - |
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| getPopupContainer | to set the container of the dropdown menu. The default is to create a `div` element in `body`, you can reset it to the scrolling area and make a relative reposition. [example](https://codepen.io/afc163/pen/zEjNOy?editors=0010) | Function(triggerNode) | `() => document.body` |
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| overlay | the dropdown menu | [Menu](/components/menu) \| () => Menu | - |
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| overlayClassName | Class name of the dropdown root element | string | - |
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| overlayStyle | Style of the dropdown root element | object | - |
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| placement | placement of pop menu: `bottomLeft` `bottomCenter` `bottomRight` `topLeft` `topCenter` `topRight` | String | `bottomLeft` |
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| trigger | the trigger mode which executes the drop-down action, hover doesn't work on mobile device | Array<`click`\|`hover`\|`contextMenu`> | `['hover']` |
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| visible | whether the dropdown menu is visible | boolean | - |
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| onVisibleChange | a callback function takes an argument: `visible`, is executed when the visible state is changed | Function(visible) | - |
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You should use [Menu](/components/menu/) as `overlay`. The menu items and dividers are also available by using `Menu.Item` and `Menu.Divider`.
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> Warning: You must set a unique `key` for `Menu.Item`.
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>
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> Menu of Dropdown is unselectable by default, you can make it selectable via `<Menu selectable>`.
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### Dropdown.Button
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| Property | Description | Type | Default |
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| -------- | ----------- | ---- | ------- |
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| disabled | whether the dropdown menu is disabled | boolean | - |
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| overlay | the dropdown menu | [Menu](/components/menu) | - |
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| placement | placement of pop menu: `bottomLeft` `bottomCenter` `bottomRight` `topLeft` `topCenter` `topRight` | String | `bottomLeft` |
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| size | size of the button, the same as [Button](/components/button) | string | `default` |
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| trigger | the trigger mode which executes the drop-down action | Array<`click`\|`hover`\|`contextMenu`> | `['hover']` |
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| type | type of the button, the same as [Button](/components/button) | string | `default` |
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| visible | whether the dropdown menu is visible | boolean | - |
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| onClick | a callback function, the same as [Button](/components/button), which will be executed when you click the button on the left | Function | - |
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| onVisibleChange | a callback function takes an argument: `visible`, is executed when the visible state is changed | Function | - |
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