All files / lib/Tabs index.js

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79.31% Branches 23/29
81.82% Functions 9/11
87.88% Lines 29/33
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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>
  );
}
**/