Added mention of user by right-clicking on his nickname. (#589)

* Added mention of user by right-clicking on his nickname.

* Removed possibility of choice. Always add @ to username.

src/widgets/splits/Split.cpp

@@ -227,6 +227,11 @@ bool Split::getModerationMode() const
     return this->moderationMode_;
 }
 
+void Split::insertTextToInput(const QString &text)
+{
+    this->input_.insertText(text);
+}
+
 void Split::showChangeChannelPopup(const char *dialogTitle, bool empty,
                                    std::function<void(bool)> callback)
 {

src/widgets/splits/Split.hpp

@@ -60,6 +60,8 @@ public:
     void setModerationMode(bool value);
     bool getModerationMode() const;
 
+    void insertTextToInput(const QString &text);
+
     void showChangeChannelPopup(const char *dialogTitle, bool empty,
                                 std::function<void(bool)> callback);
     void giveFocus(Qt::FocusReason reason);