From 33b0e6a5c88f2a20f52218965e9f68c2bc12f5eb Mon Sep 17 00:00:00 2001
From: Michael An <1822852997@qq.com>
Date: Sun, 28 Apr 2019 15:38:21 +0800
Subject: [PATCH] tree view

---
 frontend/src/components/index-viewer.js | 156 ++++++++++++++++++------
 frontend/src/css/index-viewer.css       |  16 +++
 2 files changed, 135 insertions(+), 37 deletions(-)
 create mode 100644 frontend/src/css/index-viewer.css

diff --git a/frontend/src/components/index-viewer.js b/frontend/src/components/index-viewer.js
index c6f93fdf2d..47a37dd355 100644
--- a/frontend/src/components/index-viewer.js
+++ b/frontend/src/components/index-viewer.js
@@ -1,48 +1,53 @@
 import React from 'react';
 import PropTypes from 'prop-types';
-import MarkdownViewer from '@seafile/seafile-editor/dist/viewer/markdown-viewer';
 import { repoID, slug, serviceURL, isPublicWiki } from '../utils/constants';
 import { Utils } from '../utils/utils';
+import { Value } from 'slate';
+import { deserialize } from '@seafile/seafile-editor/dist/utils/slate2markdown';
+import'../css/index-viewer.css';
 
 const viewerPropTypes = {
   indexContent: PropTypes.string.isRequired,
   onLinkClick: PropTypes.func.isRequired,
 };
 
-const contentClass = 'wiki-nav-content';
-
 class IndexContentViewer extends React.Component {
 
   constructor(props) {
     super(props);
     this.links = [];
+    this.rootNode = {};
+  }
+
+  componentWillMount() {
+    this.getRootNode();
   }
 
   componentDidMount() {
-    // Bind event when first loaded
-    this.links = document.querySelectorAll(`.${contentClass} a`);
-    this.links.forEach(link => {
-      link.addEventListener('click', this.onLinkClick);
-    });
+    this.bindClickEvent();
   }
 
   componentWillReceiveProps() {
-    // Unbound event when updating
-    this.links.forEach(link => {
-      link.removeEventListener('click', this.onLinkClick);
-    });
+    this.removeClickEvent();
   }
 
   componentDidUpdate() {
-    // Update completed, rebind event
+    this.bindClickEvent();
+  }
+
+  componentWillUnmount() {
+    this.removeClickEvent();
+  }
+
+  bindClickEvent = () => {
+    const contentClass = 'wiki-nav-content';
     this.links = document.querySelectorAll(`.${contentClass} a`);
     this.links.forEach(link => {
       link.addEventListener('click', this.onLinkClick);
     });
   }
 
-  componentWillUnmount() {
-    // Rebinding events when the component is destroyed
+  removeClickEvent = () => {
     this.links.forEach(link => {
       link.removeEventListener('click', this.onLinkClick);
     });
@@ -51,18 +56,18 @@ class IndexContentViewer extends React.Component {
   onLinkClick = (event) => {
     event.preventDefault(); 
     event.stopPropagation();
-    let link = '';
-    if (event.target.tagName !== 'A') {
-      let target = event.target.parentNode;
-      while (target.tagName !== 'A') {
-        target = target.parentNode;
-      }
-      link = target.href;
+    const link = this.getLink(event.target);
+    if (link) this.props.onLinkClick(link);
+  }
 
+  getLink = (node) => {
+    const tagName = node.tagName;
+    if (!tagName || tagName === 'HTML') return;
+    if (tagName === 'A') {
+      return node.href;
     } else {
-      link = event.target.href;
+      return this.getLink(node.parentNode);
     }
-    this.props.onLinkClick(link);
   }
 
   changeInlineNode = (item) => {
@@ -88,17 +93,18 @@ class IndexContentViewer extends React.Component {
       else if (item.type == 'link') {
         url = item.data.href;
 
+        /* eslint-disable */
         let expression = /((([A-Za-z]{3,9}:(?:\/\/)?)(?:[\-;:&=\+\$,\w]+@)?[A-Za-z0-9\.\-]+|(?:www\.|[\-;:&=\+\$,\w]+@)[A-Za-z0-9\.\-]+)((?:\/[\+~%\/\.\w\-_]*)?\??(?:[\-\+=&;%@\.\w_]*)#?(?:[\.\!\/\\\w]*))?)/
+        /* eslint-enable */
         let re = new RegExp(expression);
 
         // Solving relative paths  
         if (!re.test(url)) {
-          item.data.href = serviceURL + "/published/" + slug + '/' + url;
+          item.data.href = serviceURL + '/published/' + slug + '/' + url;
         }
         // change file url 
         else if (Utils.isInternalMarkdownLink(url, repoID)) {
           let path = Utils.getPathFromInternalMarkdownLink(url, repoID);
-          console.log(path);
           // replace url
           item.data.href = serviceURL + '/published/' + slug + path;
         } 
@@ -121,23 +127,99 @@ class IndexContentViewer extends React.Component {
     return value;
   }
 
-  onContentRendered = () => {
-    // todo
+  getRootNode = () => {
+    let value = deserialize(this.props.indexContent);
+    value = value.toJSON();
+    value = this.modifyValueBeforeRender(value);
+    value = Value.fromJSON(value);
+    const nodes = value.document.nodes;
+    nodes.map((node) => {
+      if (node.type ==='unordered_list' || node.type === 'ordered_list') {
+        this.rootNode = node;
+      }
+    });
   }
 
   render() {
-    return (
-      <div className={contentClass}>
-        <MarkdownViewer
-          markdownContent={this.props.indexContent}
-          onContentRendered={this.onContentRendered}
-          modifyValueBeforeRender={this.modifyValueBeforeRender}
-        />
-      </div>
-    );
+    return <FolderItem rootNode={this.rootNode} bindClickEvent={this.bindClickEvent} hasChild={false}/>;
   }
 }
 
 IndexContentViewer.propTypes = viewerPropTypes;
 
+const FolderItemPropTypes = {
+  rootNode: PropTypes.object.isRequired,
+  bindClickEvent: PropTypes.func.isRequired,
+  hasChild: PropTypes.bool,
+};
+
+class FolderItem extends React.Component {
+
+  constructor(props) {
+    super(props);
+    this.state = {
+      showChild: true
+    };
+  }
+
+  toggleShowChild = () => {
+    this.setState({showChild: !this.state.showChild}, () => {
+      if (this.state.showChild) {
+        this.props.bindClickEvent();
+      }
+    });
+  }
+
+  componentDidMount() {
+    if (this.props.hasChild) {
+      this.setState({ showChild: false });
+    }
+  }
+
+  render() {
+    const { rootNode } = this.props;
+    return (
+      <div className="folder-item px-2">
+        {
+          rootNode.nodes.map((node) => {
+            if (node.type === 'paragraph') {
+              let href = '';
+              node.nodes.map((linkNode) => {
+                // deal with node isn't a link
+                href = linkNode.data ? encodeURI(linkNode.data.get('href')) : 'javascript:void(0);';
+              });
+              return (
+                <div key={node.key} className="px-4 wiki-nav-content">
+                  <a href={href}>{node.text}</a>
+                </div>
+              );
+            } else {
+              const hasChild = (rootNode.type === 'unordered_list' && rootNode.nodes.size > 1);
+              return (
+                <React.Fragment key={node.key}>
+                  {this.props.hasChild &&
+                    <span className="switch-btn" onClick={this.toggleShowChild}>
+                      {this.state.showChild ? <i className="fa fa-caret-down"></i> : <i className="fa fa-caret-right"></i>}
+                    </span>
+                  }
+                  {this.state.showChild &&
+                    <FolderItem
+                      rootNode={node}
+                      key={node.key}
+                      hasChild={hasChild}
+                      bindClickEvent={this.props.bindClickEvent}
+                    />
+                  }
+                </React.Fragment>
+              );
+            }
+          })
+        }
+      </div>
+    );
+  }
+}
+
+FolderItem.propTypes = FolderItemPropTypes;
+
 export default IndexContentViewer;
diff --git a/frontend/src/css/index-viewer.css b/frontend/src/css/index-viewer.css
new file mode 100644
index 0000000000..a6184f43f0
--- /dev/null
+++ b/frontend/src/css/index-viewer.css
@@ -0,0 +1,16 @@
+.folder-item {
+  position: relative;
+  margin-top: 5px;
+}
+.folder-item .wiki-nav-content a {
+  color: #333;
+}
+.folder-item .wiki-nav-content a:hover {
+  text-decoration: none;
+}
+.switch-btn {
+  position: absolute;
+  left: 0.5rem;
+  top: 0;
+  color: #c0c0c0;
+}
\ No newline at end of file