Tabbing (#287)

* change dotted last read message indicator to a line, remove
airbrushgrenade

* sort emotes in tab completion

* implement tabbing usernames

* FeelsOkayMan

* fix emotes and usernames comparing; formatting

* remove private/personal stuff

* change lastmessageindicator back to default verpattern

src/singletons/helper/completionmodel.hpp

@@ -1,11 +1,13 @@
 #pragma once
 
 #include <QAbstractListModel>
-#include <QVector>
+#include <set>
 
 #include <map>
 #include <string>
 
+#include "common.hpp"
+
 namespace chatterino {
 namespace singletons {
 class CompletionModel : public QAbstractListModel
@@ -21,7 +23,9 @@ public:
     virtual QVariant data(const QModelIndex &index, int) const override
     {
         // TODO: Implement more safely
-        return QVariant(this->emotes.at(index.row()));
+        auto it = this->emotes.begin();
+        std::advance(it, index.row());
+        return QVariant(it->str);
     }
 
     virtual int rowCount(const QModelIndex &) const override
@@ -30,14 +34,52 @@ public:
     }
 
     void refresh();
-
-private:
     void addString(const std::string &str);
     void addString(const QString &str);
 
-    QVector<QString> emotes;
+    void addUser(const QString &str);
+
+private:
+    struct TaggedString {
+        QString str;
+        // emote == true
+        // username == false
+        bool isEmote = true;
+        bool operator<(const TaggedString &that) const
+        {
+            if (this->isEmote) {
+                if (that.isEmote) {
+                    int k = QString::compare(this->str, that.str, Qt::CaseInsensitive);
+                    if (k == 0) return this->str > that.str;
+                    else return k < 0;
+                } else
+                    return true;
+            } else {
+                if (that.isEmote)
+                    return false;
+                else {
+                    int k = QString::compare(this->str, that.str, Qt::CaseInsensitive);;
+                    if (k == 0) return this->str > that.str;
+                    else return k < 0;
+                }
+            }
+        }
+    };
+    TaggedString createEmote(const std::string &str)
+    {
+        return TaggedString{qS(str), true};
+    }
+    TaggedString createEmote(const QString &str)
+    {
+        return TaggedString{str, true};
+    }
+    TaggedString createUser(const QString &str)
+    {
+        return TaggedString{str, false};
+    }
+    std::set<TaggedString> emotes;
 
     QString channelName;
 };
-}
-}
+}  // namespace singletons
+}  // namespace chatterino