1 files changed, 357 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..036e0b909
--- /dev/null
+++ b/app/javascript/flavours/glitch/components/dropdown_menu.js
@@ -0,0 +1,357 @@
+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 '../features/ui/util/optional_motion';
+import spring from 'react-motion/lib/spring';
+import { supportsPassiveEvents } from 'detect-passive-events';
+import classNames from 'classnames';
+import { CircularProgress } from 'flavours/glitch/components/loading_indicator';
+
+const listenerOptions = supportsPassiveEvents ? { passive: true } : false;
+let id = 0;
+
+class DropdownMenu extends React.PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    items: PropTypes.oneOfType([PropTypes.array, ImmutablePropTypes.list]).isRequired,
+    loading: PropTypes.bool,
+    scrollable: PropTypes.bool,
+    onClose: PropTypes.func.isRequired,
+    style: PropTypes.object,
+    placement: PropTypes.string,
+    arrowOffsetLeft: PropTypes.string,
+    arrowOffsetTop: PropTypes.string,
+    openedViaKeyboard: PropTypes.bool,
+    renderItem: PropTypes.func,
+    renderHeader: PropTypes.func,
+    onItemClick: PropTypes.func.isRequired,
+  };
+
+  static defaultProps = {
+    style: {},
+    placement: 'bottom',
+  };
+
+  state = {
+    mounted: false,
+  };
+
+  handleDocumentClick = e => {
+    if (this.node && !this.node.contains(e.target)) {
+      this.props.onClose();
+    }
+  }
+
+  componentDidMount () {
+    document.addEventListener('click', this.handleDocumentClick, false);
+    document.addEventListener('keydown', this.handleKeyDown, false);
+    document.addEventListener('touchend', this.handleDocumentClick, listenerOptions);
+
+    if (this.focusedItem && this.props.openedViaKeyboard) {
+      this.focusedItem.focus({ preventScroll: true });
+    }
+
+    this.setState({ mounted: true });
+  }
+
+  componentWillUnmount () {
+    document.removeEventListener('click', this.handleDocumentClick, false);
+    document.removeEventListener('keydown', this.handleKeyDown, false);
+    document.removeEventListener('touchend', this.handleDocumentClick, listenerOptions);
+  }
+
+  setRef = c => {
+    this.node = c;
+  }
+
+  setFocusRef = c => {
+    this.focusedItem = c;
+  }
+
+  handleKeyDown = e => {
+    const items = Array.from(this.node.querySelectorAll('a, button'));
+    const index = items.indexOf(document.activeElement);
+    let element = null;
+
+    switch(e.key) {
+    case 'ArrowDown':
+      element = items[index+1] || items[0];
+      break;
+    case 'ArrowUp':
+      element = items[index-1] || items[items.length-1];
+      break;
+    case 'Tab':
+      if (e.shiftKey) {
+        element = items[index-1] || items[items.length-1];
+      } else {
+        element = items[index+1] || items[0];
+      }
+      break;
+    case 'Home':
+      element = items[0];
+      break;
+    case 'End':
+      element = items[items.length-1];
+      break;
+    case 'Escape':
+      this.props.onClose();
+      break;
+    }
+
+    if (element) {
+      element.focus();
+      e.preventDefault();
+      e.stopPropagation();
+    }
+  }
+
+  handleItemKeyPress = e => {
+    if (e.key === 'Enter' || e.key === ' ') {
+      this.handleClick(e);
+    }
+  }
+
+  handleClick = e => {
+    const { onItemClick } = this.props;
+    onItemClick(e);
+  }
+
+  renderItem = (option, i) => {
+    if (option === null) {
+      return <li key={`sep-${i}`} className='dropdown-menu__separator' />;
+    }
+
+    const { text, href = '#', target = '_blank', method } = option;
+
+    return (
+      <li className='dropdown-menu__item' key={`${text}-${i}`}>
+        <a href={href} target={target} data-method={method} rel='noopener noreferrer' role='button' tabIndex='0' ref={i === 0 ? this.setFocusRef : null} onClick={this.handleClick} onKeyPress={this.handleItemKeyPress} data-index={i}>
+          {text}
+        </a>
+      </li>
+    );
+  }
+
+  render () {
+    const { items, style, placement, arrowOffsetLeft, arrowOffsetTop, scrollable, renderHeader, loading } = this.props;
+    const { mounted } = this.state;
+
+    let renderItem = this.props.renderItem || this.renderItem;
+
+    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 }) => (
+          // It should not be transformed when mounting because the resulting
+          // size will be used to determine the coordinate of the menu by
+          // react-overlays
+          <div className={`dropdown-menu ${placement}`} style={{ ...style, opacity: opacity, transform: mounted ? `scale(${scaleX}, ${scaleY})` : null }} ref={this.setRef}>
+            <div className={`dropdown-menu__arrow ${placement}`} style={{ left: arrowOffsetLeft, top: arrowOffsetTop }} />
+
+            <div className={classNames('dropdown-menu__container', { 'dropdown-menu__container--loading': loading })}>
+              {loading && (
+                <CircularProgress size={30} strokeWidth={3.5} />
+              )}
+
+              {!loading && renderHeader && (
+                <div className='dropdown-menu__container__header'>
+                  {renderHeader(items)}
+                </div>
+              )}
+
+              {!loading && (
+                <ul className={classNames('dropdown-menu__container__list', { 'dropdown-menu__container__list--scrollable': scrollable })}>
+                  {items.map((option, i) => renderItem(option, i, { onClick: this.handleClick, onKeyPress: this.handleItemKeyPress }))}
+                </ul>
+              )}
+            </div>
+          </div>
+        )}
+      </Motion>
+    );
+  }
+
+}
+
+export default class Dropdown extends React.PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    children: PropTypes.node,
+    icon: PropTypes.string,
+    items: PropTypes.oneOfType([PropTypes.array, ImmutablePropTypes.list]).isRequired,
+    loading: PropTypes.bool,
+    size: PropTypes.number,
+    title: PropTypes.string,
+    disabled: PropTypes.bool,
+    scrollable: PropTypes.bool,
+    status: ImmutablePropTypes.map,
+    isUserTouching: PropTypes.func,
+    onOpen: PropTypes.func.isRequired,
+    onClose: PropTypes.func.isRequired,
+    dropdownPlacement: PropTypes.string,
+    openDropdownId: PropTypes.number,
+    openedViaKeyboard: PropTypes.bool,
+    renderItem: PropTypes.func,
+    renderHeader: PropTypes.func,
+    onItemClick: PropTypes.func,
+  };
+
+  static defaultProps = {
+    title: 'Menu',
+  };
+
+  state = {
+    id: id++,
+  };
+
+  handleClick = ({ target, type }) => {
+    if (this.state.id === this.props.openDropdownId) {
+      this.handleClose();
+    } else {
+      const { top } = target.getBoundingClientRect();
+      const placement = top * 2 < innerHeight ? 'bottom' : 'top';
+      this.props.onOpen(this.state.id, this.handleItemClick, placement, type !== 'click');
+    }
+  }
+
+  handleClose = () => {
+    if (this.activeElement) {
+      this.activeElement.focus({ preventScroll: true });
+      this.activeElement = null;
+    }
+    this.props.onClose(this.state.id);
+  }
+
+  handleMouseDown = () => {
+    if (!this.state.open) {
+      this.activeElement = document.activeElement;
+    }
+  }
+
+  handleButtonKeyDown = (e) => {
+    switch(e.key) {
+    case ' ':
+    case 'Enter':
+      this.handleMouseDown();
+      break;
+    }
+  }
+
+  handleKeyPress = (e) => {
+    switch(e.key) {
+    case ' ':
+    case 'Enter':
+      this.handleClick(e);
+      e.stopPropagation();
+      e.preventDefault();
+      break;
+    }
+  }
+
+  handleItemClick = e => {
+    const { onItemClick } = this.props;
+    const i = Number(e.currentTarget.getAttribute('data-index'));
+    const item = this.props.items[i];
+
+    this.handleClose();
+
+    if (typeof onItemClick === 'function') {
+      e.preventDefault();
+      onItemClick(item, i);
+    } else if (item && typeof item.action === 'function') {
+      e.preventDefault();
+      item.action();
+    } else if (item && item.to) {
+      e.preventDefault();
+      this.context.router.history.push(item.to);
+    }
+  }
+
+  setTargetRef = c => {
+    this.target = c;
+  }
+
+  findTarget = () => {
+    return this.target;
+  }
+
+  componentWillUnmount = () => {
+    if (this.state.id === this.props.openDropdownId) {
+      this.handleClose();
+    }
+  }
+
+  close = () => {
+    this.handleClose();
+  }
+
+  render () {
+    const {
+      icon,
+      items,
+      size,
+      title,
+      disabled,
+      loading,
+      scrollable,
+      dropdownPlacement,
+      openDropdownId,
+      openedViaKeyboard,
+      children,
+      renderItem,
+      renderHeader,
+    } = this.props;
+
+    const open = this.state.id === openDropdownId;
+
+    const button = children ? React.cloneElement(React.Children.only(children), {
+      ref: this.setTargetRef,
+      onClick: this.handleClick,
+      onMouseDown: this.handleMouseDown,
+      onKeyDown: this.handleButtonKeyDown,
+      onKeyPress: this.handleKeyPress,
+    }) : (
+      <IconButton
+        icon={icon}
+        title={title}
+        active={open}
+        disabled={disabled}
+        size={size}
+        ref={this.setTargetRef}
+        onClick={this.handleClick}
+        onMouseDown={this.handleMouseDown}
+        onKeyDown={this.handleButtonKeyDown}
+        onKeyPress={this.handleKeyPress}
+      />
+    );
+
+    return (
+      <React.Fragment>
+        {button}
+
+        <Overlay show={open} placement={dropdownPlacement} target={this.findTarget}>
+          <DropdownMenu
+            items={items}
+            loading={loading}
+            scrollable={scrollable}
+            onClose={this.handleClose}
+            openedViaKeyboard={openedViaKeyboard}
+            renderItem={renderItem}
+            renderHeader={renderHeader}
+            onItemClick={this.handleItemClick}
+          />
+        </Overlay>
+      </React.Fragment>
+    );
+  }
+
+}