Add "Copy Link" to room context menu

res/css/views/rooms/_RoomTile.scss

@@ -193,6 +193,10 @@ limitations under the License.
         mask-image: url('$(res)/img/element-icons/settings.svg');
     }
 
+    .mx_RoomTile_iconCopyLink::before {
+        mask-image: url('$(res)/img/element-icons/link.svg');
+    }
+
     .mx_RoomTile_iconInvite::before {
         mask-image: url('$(res)/img/element-icons/room/invite.svg');
     }

src/components/structures/MatrixChat.tsx

@@ -105,6 +105,8 @@ import VerificationRequestToast from '../views/toasts/VerificationRequestToast';
 import PerformanceMonitor, { PerformanceEntryNames } from "../../performance";
 import UIStore, { UI_EVENTS } from "../../stores/UIStore";
 import SoftLogout from './auth/SoftLogout';
+import { makeRoomPermalink } from "../../utils/permalinks/Permalinks";
+import { copyPlaintext } from "../../utils/strings";
 
 /** constants for MatrixChat.state.view */
 export enum Views {
@@ -627,6 +629,9 @@ export default class MatrixChat extends React.PureComponent<IProps, IState> {
             case 'forget_room':
                 this.forgetRoom(payload.room_id);
                 break;
+            case 'copy_room':
+                this.copyRoom(payload.room_id);
+                break;
             case 'reject_invite':
                 Modal.createTrackedDialog('Reject invitation', '', QuestionDialog, {
                     title: _t('Reject invitation'),
@@ -1193,6 +1198,17 @@ export default class MatrixChat extends React.PureComponent<IProps, IState> {
         });
     }
 
+    private async copyRoom(roomId: string) {
+        const roomLink = makeRoomPermalink(roomId);
+        const success = await copyPlaintext(roomLink);
+        if (!success) {
+            Modal.createTrackedDialog("Unable to copy room", "", ErrorDialog, {
+                title: _t("Unable to copy room"),
+                description: _t("Unable to copy the room to the clipboard."),
+            });
+        }
+    }
+
     /**
      * Starts a chat with the welcome user, if the user doesn't already have one
      * @returns {string} The room ID of the new room, or null if no room was created

src/components/views/rooms/RoomTile.tsx

@@ -358,6 +358,17 @@ export default class RoomTile extends React.PureComponent<IProps, IState> {
         this.setState({ generalMenuPosition: null }); // hide the menu
     };
 
+    private onCopyRoomClick = (ev: ButtonEvent) => {
+        ev.preventDefault();
+        ev.stopPropagation();
+
+        dis.dispatch({
+            action: 'copy_room',
+            room_id: this.props.room.roomId,
+        });
+        this.setState({ generalMenuPosition: null }); // hide the menu
+    };
+
     private onInviteClick = (ev: ButtonEvent) => {
         ev.preventDefault();
         ev.stopPropagation();
@@ -517,11 +528,16 @@ export default class RoomTile extends React.PureComponent<IProps, IState> {
                             iconClassName="mx_RoomTile_iconInvite"
                         />
                     ) : null}
+                    <IconizedContextMenuOption
+                        onClick={this.onCopyRoomClick}
+                        label={_t("Copy Link")}
+                        iconClassName="mx_RoomTile_iconCopyLink"
+                    />
                     <IconizedContextMenuOption
                         onClick={this.onOpenRoomSettings}
                         label={_t("Settings")}
                         iconClassName="mx_RoomTile_iconSettings"
-                    />
+                    />                    
                 </IconizedContextMenuOptionList>
                 <IconizedContextMenuOptionList red>
                     <IconizedContextMenuOption

src/i18n/strings/en_EN.json

@@ -1665,6 +1665,7 @@
     "Favourite": "Favourite",
     "Low Priority": "Low Priority",
     "Invite People": "Invite People",
+    "Copy Link": "Copy Link",
     "Leave Room": "Leave Room",
     "Room options": "Room options",
     "%(count)s unread messages including mentions.|other": "%(count)s unread messages including mentions.",
@@ -2671,6 +2672,8 @@
     "Are you sure you want to leave the space '%(spaceName)s'?": "Are you sure you want to leave the space '%(spaceName)s'?",
     "Are you sure you want to leave the room '%(roomName)s'?": "Are you sure you want to leave the room '%(roomName)s'?",
     "Failed to forget room %(errCode)s": "Failed to forget room %(errCode)s",
+    "Unable to copy room": "Unable to copy room",
+    "Unable to copy the room to the clipboard.": "Unable to copy the room to the clipboard.",
     "Signed Out": "Signed Out",
     "For security, this session has been signed out. Please sign in again.": "For security, this session has been signed out. Please sign in again.",
     "Terms and Conditions": "Terms and Conditions",