User perm check (#2876)

* added 'user permission check'

* added 'can add repo' check

* [dir view, repo wiki mode] added condition check for 'share current dir'

* [dir view, repo wiki mode] modified var name

frontend/src/components/toolbar/dir-operation-toolbar.js

@@ -13,6 +13,7 @@ const propTypes = {
   permission: PropTypes.string, //just for view file， and premission is file permission
   path: PropTypes.string.isRequired,
   repoID: PropTypes.string.isRequired,
+  showShareBtn: PropTypes.bool.isRequired,
   onAddFile: PropTypes.func.isRequired,
   onAddFolder: PropTypes.func.isRequired,
   onUploadFile: PropTypes.func.isRequired,
@@ -192,7 +193,9 @@ class DirOperationToolbar extends React.Component {
               <button className="btn btn-secondary operation-item" title={gettext('New')} onClick={this.onCreateClick}>{gettext('New')}</button>
             </Fragment>
           )}
+          {this.props.showShareBtn &&
           <button className="btn btn-secondary operation-item" title={gettext('Share')} onClick={this.onShareClick}>{gettext('Share')}</button>
+          }
         </div>
         {this.state.isUploadMenuShow && (
           <ul className="menu dropdown-menu" style={this.state.operationMenuStyle}>