Implement Rich Quoting/Replies

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/stores/RoomViewStore.js

@@ -1,5 +1,6 @@
 /*
 Copyright 2017 Vector Creations Ltd
+Copyright 2017 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.
@@ -41,6 +42,8 @@ const INITIAL_STATE = {
     roomLoadError: null,
 
     forwardingEvent: null,
+
+    quotingEvent: null,
 };
 
 /**
@@ -108,6 +111,10 @@ class RoomViewStore extends Store {
                     forwardingEvent: payload.event,
                 });
                 break;
+            case 'quote_event':
+                this._setState({
+                    quotingEvent: payload.event,
+                });
         }
     }
 
@@ -286,6 +293,11 @@ class RoomViewStore extends Store {
         return this._state.forwardingEvent;
     }
 
+    // The mxEvent if one is currently being replied to/quoted
+    getQuotingEvent() {
+        return this._state.quotingEvent;
+    }
+
     shouldPeek() {
         return this._state.shouldPeek;
     }