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44 lines
2.5 KiB
Markdown
44 lines
2.5 KiB
Markdown
---
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category: Components
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type: Form Controls
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cols: 1
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title: Transfer
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---
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Double column transfer choice box. One or more elements can be selected from either column, one click on the proper 'direction' button, and the transfer is done.
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The left column is considered the 'source' and the right column is considered the 'target'. As you can see in the API description, these names are reflected in.
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## When To Use
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To transfer the elements between two columns in an intuitive and efficient way.
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## API
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| Property | Description | Type | Default |
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|-----------|------------------------------------------|------------|--------|
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| dataSource | Used for setting the source data. The elements that are part of this array will be present the left column. Except the elements whose keys are included in `targetKeys` prop. | Array | [] |
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| render | The function to generate the item shown on a column. Based on an record (element of the dataSource array), this function should return a React element which is generated from that record. | Function(record) | |
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| targetKeys | A set of keys of elements that are listed on the right column. | Array | [] |
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| onChange | A callback function that is executed when the transfer between columns is complete. | Function(targetKeys, direction, moveKeys) | |
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| listStyle | A custom CSS style used for rendering the transfer columns. | Object | |
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| className | A custom CSS class. | String | |
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| titles | A set of titles that are sorted from left to right. | Array | ['源列表', '目的列表'] |
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| operations | A set of operations that are sorted form top to bottom. | Array | [] |
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| showSearch | If included, a search box is shown on each column. | Boolean | false |
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| searchPlaceholder | The hint text of the search box. | String | 'Please input the content' |
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| notFoundContent | Text to display when a column is empty. | React.node | 'The list is empty' |
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| footer | A function used for rendering the footer. | Function(props) | |
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## Warning
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According the [standard](http://facebook.github.io/react/docs/multiple-components.html#dynamic-children) of React, the key should always be supplied directly to the elements in the array. In Transfer, the keys should be set on the elements included in `dataSource` array. By default, `key` property is used as an unique identifier.
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If there's no `key` in your data, you should use `rowKey` to specify the key that will be used for uniquely identify each element.
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```jsx
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// eg. your primary key is `uid`
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return <Transfer rowKey={record => record.uid} />;
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```
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