delete no used code

frontend/src/components/wiki-outline.js

@@ -1,102 +0,0 @@
-import React from 'react';
-import PropTypes from 'prop-types';
-
-const itemPropTypes = {
-  activeIndex: PropTypes.number.isRequired,
-  item: PropTypes.object.isRequired,
-  handleNavItemClick: PropTypes.func.isRequired,
-};
-
-class WikiOutlineItem extends React.Component {
-
-  handleNavItemClick = () => {
-    var activeId = this.props.item.id;
-    this.props.handleNavItemClick(activeId);
-  };
-
-  render() {
-    let item = this.props.item;
-    let activeIndex = parseInt(this.props.activeIndex);
-    let levelClass  = item.depth === 3 ? ' textindent-2' : '';
-    let activeClass = item.key === activeIndex ? ' wiki-outline-item-active' : '';
-    let clazz = 'wiki-outline-item'+ levelClass + activeClass;
-    return (
-      <li className={clazz} data-index={item.key} onClick={this.handleNavItemClick}>
-        <a href={item.id} title={item.text}>{item.text}</a>
-      </li>
-    );
-  }
-
-}
-
-WikiOutlineItem.propTypes = itemPropTypes;
-
-const outlinePropTypes = {
-  navItems: PropTypes.array.isRequired,
-  activeId: PropTypes.oneOfType([
-    PropTypes.string,
-    PropTypes.number
-  ]).isRequired,
-  handleNavItemClick: PropTypes.func.isRequired,
-};
-
-class WikiOutline extends React.Component {
-
-  constructor(props) {
-    super(props);
-    this.state = {
-      activeIndex : 0,
-      scrollTop: 0,
-    };
-  }
-
-  UNSAFE_componentWillReceiveProps(nextProps) {
-    let _this = this;
-    let activeId = nextProps.activeId;
-    let navItems = nextProps.navItems;
-    let length = navItems.length;
-    for (let i = 0; i < length; i++) {
-      let flag = false;
-      let item = navItems[i];
-      if (item.id === activeId && item.key !== _this.state.activeIndex) {
-        let scrollTop = 0;
-        if (item.key > 20) {
-          scrollTop = - (item.key - 20)*27 + 'px';
-          if (parseInt(scrollTop) > 0) { // handle scroll quickly;
-            scrollTop = 0;
-          }
-        }
-        _this.setState({
-          activeIndex : item.key,
-          scrollTop: scrollTop
-        });
-        flag = true;
-      }
-      if (flag) {
-        break;
-      }
-    }
-  }
-
-  render() {
-    let style = {top: this.state.scrollTop};
-    return (
-      <ul className="wiki-viewer-outline" ref="outlineContainer" style={style}>
-        {this.props.navItems.map(item => {
-          return (
-            <WikiOutlineItem
-              key={item.key}
-              item={item}
-              activeIndex={this.state.activeIndex}
-              handleNavItemClick={this.props.handleNavItemClick}
-            />
-          );
-        })}
-      </ul>
-    );
-  }
-}
-
-WikiOutline.propTypes = outlinePropTypes;
-
-export default WikiOutline;