1 files changed, 211 insertions, 0 deletions
diff --git a/app/javascript/flavours/glitch/components/dropdown_menu.js b/app/javascript/flavours/glitch/components/dropdown_menu.js
new file mode 100644
index 000000000..d4a886a8b
--- /dev/null
+++ b/app/javascript/flavours/glitch/components/dropdown_menu.js
@@ -0,0 +1,211 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import IconButton from './icon_button';
+import Overlay from 'react-overlays/lib/Overlay';
+import Motion from 'flavours/glitch/util/optional_motion';
+import spring from 'react-motion/lib/spring';
+import detectPassiveEvents from 'detect-passive-events';
+
+const listenerOptions = detectPassiveEvents.hasSupport ? { passive: true } : false;
+
+class DropdownMenu extends React.PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    items: PropTypes.array.isRequired,
+    onClose: PropTypes.func.isRequired,
+    style: PropTypes.object,
+    placement: PropTypes.string,
+    arrowOffsetLeft: PropTypes.string,
+    arrowOffsetTop: PropTypes.string,
+  };
+
+  static defaultProps = {
+    style: {},
+    placement: 'bottom',
+  };
+
+  handleDocumentClick = e => {
+    if (this.node && !this.node.contains(e.target)) {
+      this.props.onClose();
+    }
+  }
+
+  componentDidMount () {
+    document.addEventListener('click', this.handleDocumentClick, false);
+    document.addEventListener('touchend', this.handleDocumentClick, listenerOptions);
+  }
+
+  componentWillUnmount () {
+    document.removeEventListener('click', this.handleDocumentClick, false);
+    document.removeEventListener('touchend', this.handleDocumentClick, listenerOptions);
+  }
+
+  setRef = c => {
+    this.node = c;
+  }
+
+  handleClick = e => {
+    const i = Number(e.currentTarget.getAttribute('data-index'));
+    const { action, to } = this.props.items[i];
+
+    this.props.onClose();
+
+    if (typeof action === 'function') {
+      e.preventDefault();
+      action();
+    } else if (to) {
+      e.preventDefault();
+      this.context.router.history.push(to);
+    }
+  }
+
+  renderItem (option, i) {
+    if (option === null) {
+      return <li key={`sep-${i}`} className='dropdown-menu__separator' />;
+    }
+
+    const { text, href = '#' } = option;
+
+    return (
+      <li className='dropdown-menu__item' key={`${text}-${i}`}>
+        <a href={href} target='_blank' rel='noopener' role='button' tabIndex='0' autoFocus={i === 0} onClick={this.handleClick} data-index={i}>
+          {text}
+        </a>
+      </li>
+    );
+  }
+
+  render () {
+    const { items, style, placement, arrowOffsetLeft, arrowOffsetTop } = this.props;
+
+    return (
+      <Motion defaultStyle={{ opacity: 0, scaleX: 0.85, scaleY: 0.75 }} style={{ opacity: spring(1, { damping: 35, stiffness: 400 }), scaleX: spring(1, { damping: 35, stiffness: 400 }), scaleY: spring(1, { damping: 35, stiffness: 400 }) }}>
+        {({ opacity, scaleX, scaleY }) => (
+          <div className='dropdown-menu' style={{ ...style, opacity: opacity, transform: `scale(${scaleX}, ${scaleY})` }} ref={this.setRef}>
+            <div className={`dropdown-menu__arrow ${placement}`} style={{ left: arrowOffsetLeft, top: arrowOffsetTop }} />
+
+            <ul>
+              {items.map((option, i) => this.renderItem(option, i))}
+            </ul>
+          </div>
+        )}
+      </Motion>
+    );
+  }
+
+}
+
+export default class Dropdown extends React.PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    icon: PropTypes.string.isRequired,
+    items: PropTypes.array.isRequired,
+    size: PropTypes.number.isRequired,
+    ariaLabel: PropTypes.string,
+    disabled: PropTypes.bool,
+    status: ImmutablePropTypes.map,
+    isUserTouching: PropTypes.func,
+    isModalOpen: PropTypes.bool.isRequired,
+    onModalOpen: PropTypes.func,
+    onModalClose: PropTypes.func,
+  };
+
+  static defaultProps = {
+    ariaLabel: 'Menu',
+  };
+
+  state = {
+    expanded: false,
+  };
+
+  handleClick = () => {
+    if (!this.state.expanded && this.props.isUserTouching() && this.props.onModalOpen) {
+      const { status, items } = this.props;
+
+      this.props.onModalOpen({
+        status,
+        actions: items,
+        onClick: this.handleItemClick,
+      });
+
+      return;
+    }
+
+    this.setState({ expanded: !this.state.expanded });
+  }
+
+  handleClose = () => {
+    if (this.props.onModalClose) {
+      this.props.onModalClose();
+    }
+
+    this.setState({ expanded: false });
+  }
+
+  handleKeyDown = e => {
+    switch(e.key) {
+    case 'Enter':
+      this.handleClick();
+      break;
+    case 'Escape':
+      this.handleClose();
+      break;
+    }
+  }
+
+  handleItemClick = e => {
+    const i = Number(e.currentTarget.getAttribute('data-index'));
+    const { action, to } = this.props.items[i];
+
+    this.handleClose();
+
+    if (typeof action === 'function') {
+      e.preventDefault();
+      action();
+    } else if (to) {
+      e.preventDefault();
+      this.context.router.history.push(to);
+    }
+  }
+
+  setTargetRef = c => {
+    this.target = c;
+  }
+
+  findTarget = () => {
+    return this.target;
+  }
+
+  render () {
+    const { icon, items, size, ariaLabel, disabled } = this.props;
+    const { expanded } = this.state;
+
+    return (
+      <div onKeyDown={this.handleKeyDown}>
+        <IconButton
+          icon={icon}
+          title={ariaLabel}
+          active={expanded}
+          disabled={disabled}
+          size={size}
+          ref={this.setTargetRef}
+          onClick={this.handleClick}
+        />
+
+        <Overlay show={expanded} placement='bottom' target={this.findTarget}>
+          <DropdownMenu items={items} onClose={this.handleClose} />
+        </Overlay>
+      </div>
+    );
+  }
+
+}