# @rc-component/trigger

React Trigger Component

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[npm-url]: http://npmjs.org/package/@rc-component/trigger
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[codecov-url]: https://app.codecov.io/gh/react-component/trigger
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[dumi-url]: https://github.com/umijs/dumi

## Install

[![@rc-component/trigger](https://nodei.co/npm/@rc-component/trigger.png)](https://npmjs.org/package/@rc-component/trigger)

## Usage

Include the default [styling](https://github.com/react-component/trigger/blob/master/assets/index.less#L4:L11) and then:

```js
import React from 'react';
import ReactDOM from 'react-dom';
import Trigger from '@rc-component/trigger';

ReactDOM.render((
  <Trigger
    action={['click']}
    popup={<span>popup</span>}
    popupAlign={{
      points: ['tl', 'bl'],
      offset: [0, 3]
    }}
  >
    <a href='#'>hover</a>
  </Trigger>
), container);
```

## Compatibility

| [<img src="https://raw.githubusercontent.com/alrra/browser-logos/master/src/edge/edge_48x48.png" alt="IE / Edge" width="24px" height="24px" />](http://godban.github.io/browsers-support-badges/)<br>IE / Edge | [<img src="https://raw.githubusercontent.com/alrra/browser-logos/master/src/firefox/firefox_48x48.png" alt="Firefox" width="24px" height="24px" />](http://godban.github.io/browsers-support-badges/)<br>Firefox | [<img src="https://raw.githubusercontent.com/alrra/browser-logos/master/src/chrome/chrome_48x48.png" alt="Chrome" width="24px" height="24px" />](http://godban.github.io/browsers-support-badges/)<br>Chrome | [<img src="https://raw.githubusercontent.com/alrra/browser-logos/master/src/safari/safari_48x48.png" alt="Safari" width="24px" height="24px" />](http://godban.github.io/browsers-support-badges/)<br>Safari | [<img src="https://raw.githubusercontent.com/alrra/browser-logos/master/src/electron/electron_48x48.png" alt="Electron" width="24px" height="24px" />](http://godban.github.io/browsers-support-badges/)<br>Electron |
| --- | --- | --- | --- | --- |
| IE11, Edge | last 2 versions | last 2 versions | last 2 versions | last 2 versions |

## Example

http://localhost:9001

online example: http://react-component.github.io/trigger/

## Development

```
npm install
npm start
```

## API

### props

<table class="table table-bordered table-striped">
    <thead>
    <tr>
        <th style="width: 100px;">name</th>
        <th style="width: 50px;">type</th>
        <th style="width: 50px;">default</th>
        <th>description</th>
    </tr>
    </thead>
    <tbody>
        <tr>
          <td>alignPoint</td>
          <td>bool</td>
          <td>false</td>
          <td>Popup will align with mouse position (support action of 'click', 'hover' and 'contextMenu')</td>
        </tr>
        <tr>
          <td>popupClassName</td>
          <td>string</td>
          <td></td>
          <td>additional className added to popup</td>
        </tr>
        <tr>
          <td>forceRender</td>
          <td>boolean</td>
          <td>false</td>
          <td>whether render popup before first show</td>
        </tr>
        <tr>
          <td>destroyPopupOnHide</td>
          <td>boolean</td>
          <td>false</td>
          <td>whether destroy popup when hide</td>
        </tr>
        <tr>
          <td>getPopupClassNameFromAlign</td>
          <td>getPopupClassNameFromAlign(align: Object):String</td>
          <td></td>
          <td>additional className added to popup according to align</td>
        </tr>
        <tr>
          <td>action</td>
          <td>string[]</td>
          <td>['hover']</td>
          <td>which actions cause popup shown. enum of 'hover','click','focus','contextMenu'</td>
        </tr>
        <tr>
          <td>mouseEnterDelay</td>
          <td>number</td>
          <td>0</td>
          <td>delay time to show when mouse enter. unit: s.</td>
        </tr>
        <tr>
          <td>mouseLeaveDelay</td>
          <td>number</td>
          <td>0.1</td>
          <td>delay time to hide when mouse leave. unit: s.</td>
        </tr>
        <tr>
          <td>popupStyle</td>
          <td>Object</td>
          <td></td>
          <td>additional style of popup</td>
        </tr>
        <tr>
          <td>prefixCls</td>
          <td>String</td>
          <td>rc-trigger-popup</td>
          <td>prefix class name</td>
        </tr>
        <tr>
          <td>popupTransitionName</td>
          <td>String|Object</td>
          <td></td>
          <td>https://github.com/react-component/animate</td>
        </tr>
        <tr>
          <td>maskTransitionName</td>
          <td>String|Object</td>
          <td></td>
          <td>https://github.com/react-component/animate</td>
        </tr>
        <tr>
          <td>onPopupVisibleChange</td>
          <td>Function</td>
          <td></td>
          <td>call when popup visible is changed</td>
        </tr>
        <tr>
          <td>mask</td>
          <td>boolean</td>
          <td>false</td>
          <td>whether to support mask</td>
        </tr>
        <tr>
          <td>maskClosable</td>
          <td>boolean</td>
          <td>true</td>
          <td>whether to support click mask to hide</td>
        </tr>
        <tr>
          <td>popupVisible</td>
          <td>boolean</td>
          <td></td>
          <td>whether popup is visible</td>
        </tr>
        <tr>
          <td>zIndex</td>
          <td>number</td>
          <td></td>
          <td>popup's zIndex</td>
        </tr>
        <tr>
          <td>defaultPopupVisible</td>
          <td>boolean</td>
          <td></td>
          <td>whether popup is visible initially</td>
        </tr>
        <tr>
          <td>popupAlign</td>
          <td>Object: alignConfig of [dom-align](https://github.com/yiminghe/dom-align)</td>
          <td></td>
          <td>popup 's align config</td>
        </tr>
        <tr>
          <td>onPopupAlign</td>
          <td>function(popupDomNode, align)</td>
          <td></td>
          <td>callback when popup node is aligned</td>
        </tr>
        <tr>
          <td>popup</td>
          <td>React.Element | function() => React.Element</td>
          <td></td>
          <td>popup content</td>
        </tr>
        <tr>
          <td>getPopupContainer</td>
          <td>getPopupContainer(): HTMLElement</td>
          <td></td>
          <td>function returning html node which will act as popup container</td>
        </tr>
        <tr>
          <td>getDocument</td>
          <td>getDocument(): HTMLElement</td>
          <td></td>
          <td>function returning document node which will be attached click event to close trigger</td>
        </tr>
        <tr>
          <td>popupPlacement</td>
          <td>string</td>
          <td></td>
          <td>use preset popup align config from builtinPlacements, can be merged by popupAlign prop</td>
        </tr>
        <tr>
          <td>builtinPlacements</td>
          <td>object</td>
          <td></td>
          <td>builtin placement align map. used by placement prop</td>
        </tr>
        <tr>
          <td>stretch</td>
          <td>string</td>
          <td></td>
          <td>Let popup div stretch with trigger element. enums of 'width', 'minWidth', 'height', 'minHeight'. (You can also mixed with 'height minWidth')</td>
        </tr>
    </tbody>
</table>


## Test Case

```
npm test
npm run chrome-test
```

## Coverage

```
npm run coverage
```

open coverage/ dir

## React 16 Note

After React 16, you won't access popup element's ref in parent component's componentDidMount, which means following code won't work.

```javascript
class App extends React.Component {
  componentDidMount() {
    this.input.focus(); // error, this.input is undefined.
  }

  render() {
    return (
      <Trigger
        action={['click']}
        popup={<div><input ref={node => this.input = node} type="text" /></div>}
      >
        <button>click</button>
      </Trigger>
    )
  }
}
```

Consider wrap your popup element to a separate component:

```javascript
class InputPopup extends React.Component {
  componentDidMount() {
    this.props.onMount();
  }

  render() {
    return (
      <div>
        <input ref={this.props.inputRef} type="text" />
      </div>
    );
  }
}

class App extends React.Component {
  handlePopupMount() {
    this.input.focus(); // error, this.input is undefined.
  }

  render() {
    return (
      <Trigger
        action={['click']}
        popup={<InputPopup inputRef={node => this.input = node} onMount={this.handlePopupMount} />}
      >
        <button>click</button>
      </Trigger>
    )
  }
}
```

## License

rc-trigger is released under the MIT license.
