промежуточный. частичный рефакторинг с прицелом на библиотечную часть

src/Common_old/UI/Trees/GraphTreeCellRenderer.java

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+package Common_old.UI.Trees;
+import Common_old.Current;
+import Common_old.UI.Themes.VisualiserFonts;
+import Common_old.Utils.Utils;
+import ProjectData.SapforData.FileObjectWithMessages;
+
+import javax.swing.*;
+import javax.swing.tree.DefaultMutableTreeNode;
+public class GraphTreeCellRenderer extends StyledTreeCellRenderer {
+    public java.awt.Component getTreeCellRendererComponent(
+            JTree tree, Object value,
+            boolean selected, boolean expanded,
+            boolean leaf, int row, boolean hasFocus) {
+        super.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, hasFocus);
+        Object o = ((DefaultMutableTreeNode) value).getUserObject();
+        if (o instanceof FileObjectWithMessages) {
+            FileObjectWithMessages target = (FileObjectWithMessages) o;
+            setIcon(Utils.getIcon(target.ImageKey()));
+            setFont(Current.getTheme().Fonts.get(target.getFont()));
+        } else {
+            setIcon(null);
+            setFont(Current.getTheme().Fonts.get(VisualiserFonts.TreeItalic));
+        }
+        setForeground(tree.getForeground());
+        return this;
+    }
+}