Support replying and editing messages directly from room search

There's two parts to making this work mainly:
1. Use getEvent instead of findInTimeline so the related event is
actually found.
2. Close the dialog once a reply relation is found, so you can easily
reply in the chat bar.

src/libneochat/chatbarcache.cpp

@@ -150,9 +150,9 @@ Quotient::RoomMember ChatBarCache::relationAuthor() const
     if (m_relationId.isEmpty()) {
         return room->member(QString());
     }
-    const auto evtIt = room->findInTimeline(m_relationId);
-    if (evtIt != room->messageEvents().rend()) {
-        return room->member((*evtIt)->senderId());
+    const auto [event, _] = room->getEvent(m_relationId);
+    if (event != nullptr) {
+        return room->member(event->senderId());
     }
     qWarning() << "Failed to find relation" << m_relationId << "in timeline?";
     return room->member(QString());
@@ -178,8 +178,8 @@ QString ChatBarCache::relationMessage() const
         return {};
     }
 
-    if (auto event = room->findInTimeline(m_relationId); event != room->historyEdge()) {
-        return EventHandler::markdownBody(&**event);
+    if (auto [event, _] = room->getEvent(m_relationId); event != nullptr) {
+        return EventHandler::markdownBody(event);
     }
     return {};
 }
@@ -285,11 +285,6 @@ void ChatBarCache::postMessage()
         return;
     }
 
-    const auto replyIt = room->findInTimeline(replyId());
-    if (replyIt == room->historyEdge()) {
-        isReply = false;
-    }
-
     auto content = std::make_unique<Quotient::EventContent::TextContent>(sendText, u"text/html"_s);
 
     room->post<Quotient::RoomMessageEvent>(text(), *std::get<std::optional<Quotient::RoomMessageEvent::MsgType>>(result), std::move(content), relatesTo);

src/roominfo/RoomSearchPage.qml

@@ -3,6 +3,8 @@
 
 import QtQuick
 
+import org.kde.kirigami as Kirigami
+
 import org.kde.neochat.libneochat
 import org.kde.neochat.timeline
 
@@ -45,4 +47,15 @@ SearchPage {
     noResultPlaceholderMessage: i18n("No messages found")
 
     listVerticalLayoutDirection: ListView.BottomToTop
+
+    Connections {
+        target: root.room.mainCache
+
+        function onRelationIdChanged(oldEventId: string, newEventId: string): void {
+            // If we start replying/editing an event, we need to close the search dialog so the user can type.
+            if (newEventId.length > 0) {
+                root.Kirigami.PageStack.closeDialog();
+            }
+        }
+    }
 }

src/timeline/MessageDelegate.qml

@@ -227,6 +227,7 @@ MessageDelegateBase {
     quickActionComponent: QuickActions {
         room: root.room
         eventId: root.eventId
+        author: root.author
     }
 
     QtObject {

src/timeline/QuickActions.qml

@@ -22,6 +22,15 @@ RowLayout {
      */
     required property string eventId
 
+    /**
+     * @brief The message author.
+     *
+     * A Quotient::RoomMember object.
+     *
+     * @sa Quotient::RoomMember
+     */
+    required property var author
+
     property real availableWidth: 0.0
 
     property bool reacting: false