102 lines
5.1 KiB
Markdown
102 lines
5.1 KiB
Markdown
---
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category: Components
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type: Data Entry
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title: Transfer
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cover: https://gw.alipayobjects.com/zos/alicdn/QAXskNI4G/Transfer.svg
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---
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Alert component for feedback.
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## When To Use
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- When you need to show alert messages to users.
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- When you need a persistent static container which is closable by user actions.
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Transfer the elements between two columns in an intuitive and efficient way.
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One or more elements can be selected from either column, one click on the proper `direction` button, and the transfer is done. 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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## API
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| Property | Description | Type | Default | Version |
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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. | \[{key: string.isRequired,title: string.isRequired,description: string,disabled: bool}\] | \[] | |
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| disabled | Whether disabled transfer | boolean | false | |
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| filterOption | A function to determine whether an item should show in search result list | (inputValue, option): boolean | | |
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| footer | customize the progress dot by setting a scoped slot | slot="footer" slot-scope="props" | | |
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| listStyle | A custom CSS style used for rendering the transfer columns. | object | | |
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| locale | i18n text including filter, empty text, item unit, etc | object | `{ itemUnit: 'item', itemsUnit: 'items', notFoundContent: 'The list is empty', searchPlaceholder: 'Search here' }` | |
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| oneWay | Display as single direction style | boolean | false | 3.0.0 |
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| operations | A set of operations that are sorted from top to bottom. | string\[] | \['>', '<'] | |
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| operationStyle | A custom CSS style used for rendering the operations column | CSSProperties | - | 3.0.0 |
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| pagination | Use pagination. Not work in render props | boolean \| { pageSize: number } | false | 3.0.0 |
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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 element which is generated from that record. Also, it can return a plain object with `value` and `label`, `label` is a element and `value` is for title | Function(record) \| slot | | |
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| selectedKeys(v-model) | A set of keys of selected items. | string\[] | \[] | |
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| showSearch | If included, a search box is shown on each column. | boolean | false | |
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| showSelectAll | Show select all checkbox on the header | boolean | true | |
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| targetKeys(v-model) | A set of keys of elements that are listed on the right column. | string\[] | \[] | |
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| titles | A set of titles that are sorted from left to right. | string\[] | - | |
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### events
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| Events Name | Description | Arguments | Version |
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| --- | --- | --- | --- |
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| change | A callback function that is executed when the transfer between columns is complete. | (targetKeys, direction, moveKeys): void | |
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| scroll | A callback function which is executed when scroll options list | (direction, event): void | |
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| search | A callback function which is executed when search field are changed | (direction: 'left'\|'right', value: string): void | - |
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| selectChange | A callback function which is executed when selected items are changed. | (sourceSelectedKeys, targetSelectedKeys): void | |
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### Render Props
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Transfer accept `children` to customize render list, using follow props:
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```json
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{
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"direction": String,
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"disabled": Boolean,
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"filteredItems": Array,
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"selectedKeys": Array,
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"onItemSelect": Function,
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"onItemSelectAll": Function
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}
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```
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| Property | Description | Type | Version |
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| --------------- | ----------------------- | ----------------------------------- | ------- |
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| direction | List render direction | 'left' \| 'right' | |
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| disabled | Disable list or not | boolean | |
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| filteredItems | Filtered items | TransferItem[] | |
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| onItemSelect | Select item | (key: string, selected: boolean) | |
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| onItemSelectAll | Select a group of items | (keys: string[], selected: boolean) | |
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| selectedKeys | Selected items | string[] | |
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#### example
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```html
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<a-transfer>
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<template
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#children="{
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direction,
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filteredItems,
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selectedKeys,
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disabled: listDisabled,
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onItemSelectAll,
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onItemSelect,
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}"
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>
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<your-component />
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<template>
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</a-transfer>
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```
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## Warning
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According the standard of Vue, 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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