Support custom fields for all event types

include/core/event.h

@@ -23,6 +23,7 @@ class Event
 {
 public:
     Event();
+    Event(QJsonObject, QString);
 public:
     int x() {
         return getInt("x");
@@ -75,8 +76,12 @@ public:
     void setPixmapFromSpritesheet(QImage, int, int);
     int getPixelX();
     int getPixelY();
+    QMap<QString, bool> getExpectedFields();
+    void readCustomValues(QJsonObject values);
+    void addCustomValuesTo(QJsonObject *obj);
 
     QMap<QString, QString> values;
+    QMap<QString, QString> customValues;
     QPixmap pixmap;
     int spriteWidth;
     int spriteHeight;

include/ui/customattributestable.h

@@ -0,0 +1,22 @@
+#ifndef CUSTOMATTRIBUTESTABLE_H
+#define CUSTOMATTRIBUTESTABLE_H
+
+#include "event.h"
+#include <QObject>
+#include <QFrame>
+#include <QTableWidget>
+
+class CustomAttributesTable : public QFrame
+{
+public:
+    explicit CustomAttributesTable(Event *event, QWidget *parent = nullptr);
+    ~CustomAttributesTable();
+
+private:
+    Event *event;
+    QTableWidget *table;
+    void resizeVertically();
+    QMap<QString, QString> getTableFields();
+};
+
+#endif // CUSTOMATTRIBUTESTABLE_H