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| import React from 'react';
import PropTypes from 'prop-types';
/**
* Tabs is container component for rendering tabs and tab-panels
* @category layout
* @component tabs
* @variations collab-ui-react
*
*/
class Tabs extends React.Component {
state = {
activeIndex: 0,
focus: this.props.focus
};
getChildContext = () => {
return {
activeIndex: this.state.activeIndex,
onActivate: index => this.setSelected(index),
onFocus: index => this.setState({ focus: index }),
focus: this.state.focus,
};
};
componentWillMount() {
const tabsCount = this.getChildrenElements('TabList');
const panelsCount = this.getChildrenElements('TabContent');
Iif (tabsCount !== panelsCount) {
throw new Error(`There should be an equal number of Tabs and TabPanels.
Received ${tabsCount} Tabs and ${panelsCount} TabPanels.`);
}
}
getMobileListItems = () => {
return React.Children.map(this.props.children, child => {
if (child.type.displayName === 'TopbarNav') {
return child.props.children;
}
});
};
getChildrenElements = name => {
let elementCount = 0;
React.Children.forEach(this.props.children, child => {
if (child.type.displayName === name) {
return child.props.children.length
? (elementCount += child.props.children.length)
: elementCount++;
}
});
return elementCount;
};
setSelected = index => {
// Don't do anything if index is the same or outside of the bounds
if (
index === this.state.activeIndex ||
index < 0 ||
index >= this.getChildrenElements('TabList')
)
return;
// Keep reference to last index for event handler
const last = this.state.activeIndex;
// Update state with selected index
this.setState({ activeIndex: index });
// Call change event handler
if (typeof this.props.onSelect === 'function') {
this.props.onSelect(index, last);
}
};
render() {
const { children, className, tabType, justified } = this.props;
const cloneChildren = React.Children.map(children, child => {
if (child.type.displayName === 'TabContent') {
return React.cloneElement(child, {
activeIndex: this.state.activeIndex,
});
} else if (child.type.displayName === 'TabList') {
return React.cloneElement(child, {
role: 'tab'
});
} else {
return child;
}
});
return (
<div
className={
'cui-tab' +
`${(tabType && ` cui-tab--${tabType}`) || ''}` +
`${(justified && ` cui-tab--justified`) || ''}` +
(className && ` ${className}`) || ''}
type={tabType}
>
{cloneChildren}
</div>
);
}
}
Tabs.propTypes = {
/** @prop Determines if Tab is active | false */
active: PropTypes.bool,
/** @prop Children nodes of Tab and TabContent are required */
children: PropTypes.node.isRequired,
/** @prop Optional CSS class name | '' */
className: PropTypes.string,
/** @prop Set the index of the focused Tab | 0 */
focus: PropTypes.number,
/** @prop Determines if the Tabs are in a justified layout | false */
justified: PropTypes.bool,
/** @prop Callback function invoked when user selects a tab | null */
onSelect: PropTypes.func,
/** @prop Type of Tabs | 'pills' */
tabType: PropTypes.oneOf(['pills']),
};
Tabs.defaultProps = {
active: false,
className: '',
focus: 0,
justified: false,
onSelect: null,
tabType: 'pills',
};
Tabs.childContextTypes = {
focus: PropTypes.number,
activeIndex: PropTypes.number,
onActivate: PropTypes.func,
onFocus: PropTypes.func,
};
Tabs.displayName = 'Tabs';
export default Tabs;
/**
* @component tabs
* @section default
* @react
import {
Tab,
TabContent,
TabList,
TabPane,
Tabs,
} from '@collab-ui/react';
export default function TabsDefault() {
return (
<Tabs>
<TabList>
<Tab
heading='First Tab'
/>
<Tab
heading='Second Tab'
/>
<Tab
heading='Third Tab'
/>
</TabList>
<TabContent>
<TabPane>
Testing 1
</TabPane>
<TabPane>
Testing 2
</TabPane>
<TabPane>
Testing 3
</TabPane>
</TabContent>
</Tabs>
);
}
**/
/**
* @component tabs
* @section justified
* @react
import {
Tab,
TabContent,
TabList,
TabPane,
Tabs,
} from '@collab-ui/react';
export default function TabsJustified() {
return (
<Tabs justified>
<TabList>
<Tab
heading='First Tab'
/>
<Tab
heading='Second Tab'
/>
<Tab
heading='Third Tab'
/>
</TabList>
<TabContent>
<TabPane>
Testing 1
</TabPane>
<TabPane>
Testing 2
</TabPane>
<TabPane>
Testing 3
</TabPane>
</TabContent>
</Tabs>
);
}
**/
|