Prompt if a user really wants to leave the room

src/controllers/molecules/MemberTile.js

@@ -18,6 +18,8 @@ limitations under the License.
 
 var dis = require("../../dispatcher");
 var Modal = require("../../Modal");
+var ComponentBroker = require('../../ComponentBroker');
+var QuestionDialog = ComponentBroker.get("organisms/QuestionDialog");
 var Loader = require("react-loader");
 
 var MatrixClientPeg = require("../../MatrixClientPeg");
@@ -31,19 +33,28 @@ module.exports = {
     },
 
     onLeaveClick: function() {
-        var d = MatrixClientPeg.get().leave(this.props.member.roomId);
+        var roomId = this.props.member.roomId;
+        Modal.createDialog(QuestionDialog, {
+            title: "Leave room",
+            description: "Are you sure you want to leave the room?",
+            onFinished: function(should_leave) {
+                if (should_leave) {
+                    var d = MatrixClientPeg.get().leave(roomId);
 
-        var modal = Modal.createDialog(Loader);
+                    var modal = Modal.createDialog(Loader);
 
-        d.then(function() {
-            modal.close();
-            dis.dispatch({action: 'view_next_room'});
-        }, function(err) {
-            modal.close();
-            Modal.createDialog(ErrorDialog, {
-                title: "Failed to leave room",
-                description: err.toString()
-            });
+                    d.then(function() {
+                        modal.close();
+                        dis.dispatch({action: 'view_next_room'});
+                    }, function(err) {
+                        modal.close();
+                        Modal.createDialog(ErrorDialog, {
+                            title: "Failed to leave room",
+                            description: err.toString()
+                        });
+                    });
+                }
+            }
         });
     }
 };