Add context menu to TagPanel

See https://github.com/matrix-org/matrix-react-sdk/pull/1743

src/components/views/context_menus/TagTileContextMenu.js

@@ -0,0 +1,68 @@
+/*
+Copyright 2018 New Vector Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import PropTypes from 'prop-types';
+import { _t } from 'matrix-react-sdk/lib/languageHandler';
+import dis from 'matrix-react-sdk/lib/dispatcher';
+import TagOrderActions from 'matrix-react-sdk/lib/actions/TagOrderActions';
+import MatrixClientPeg from 'matrix-react-sdk/lib/MatrixClientPeg';
+
+export default class TagTileContextMenu extends React.Component {
+    static propTypes = {
+        tag: PropTypes.string.isRequired,
+        /* callback called when the menu is dismissed */
+        onFinished: PropTypes.func.isRequired,
+    };
+
+    constructor() {
+        super();
+
+        this._onViewCommunityClick = this._onViewCommunityClick.bind(this);
+        this._onRemoveClick = this._onRemoveClick.bind(this);
+    }
+
+    _onViewCommunityClick() {
+        dis.dispatch({
+            action: 'view_group',
+            group_id: this.props.tag,
+        });
+        this.props.onFinished();
+    }
+
+    _onRemoveClick() {
+        dis.dispatch(TagOrderActions.removeTag(
+            // XXX: Context menus don't have a MatrixClient context
+            MatrixClientPeg.get(),
+            this.props.tag,
+        ));
+        this.props.onFinished();
+    }
+
+    render() {
+        return <div>
+            <div className="mx_TagTileContextMenu_item" onClick={this._onViewCommunityClick} >
+                <img className="mx_TagTileContextMenu_item_icon" src="img/icons-groups.svg" width="15" height="15" />
+                { _t('View Community') }
+            </div>
+            <hr className="mx_TagTileContextMenu_separator" />
+            <div className="mx_TagTileContextMenu_item" onClick={this._onRemoveClick} >
+                <img className="mx_TagTileContextMenu_item_icon" src="img/icon_context_delete.svg" width="15" height="15" />
+                { _t('Remove') }
+            </div>
+        </div>;
+    }
+}