REPORT-72634 设计器卡顿优化一期

designer-realize/src/main/java/com/fr/start/MainDesigner.java

@@ -78,7 +78,9 @@ import com.fr.van.chart.map.server.ChartMapEditorAction;
 import com.fr.workspace.WorkContext;
 import sun.awt.AppContext;
 
-import javax.swing.*;
+import javax.swing.JPanel;
+import javax.swing.SwingWorker;
+import javax.swing.JComponent;
 import javax.swing.border.MatteBorder;
 import java.awt.Component;
 import java.awt.Dimension;