Marking parent nodes as modified (bold) too - TreeItem now has isModified method

libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/FolderItem.java

@@ -53,4 +53,15 @@ public class FolderItem implements TreeItem {
     public String toString() {
         return str;
     }
+
+    @Override
+    public boolean isModified() {
+        for(TreeItem ti:subItems){
+            if(ti.isModified()){
+                return true;
+            }
+        }
+        return false;
+    }
+    
 }

libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/HeaderItem.java

@@ -42,4 +42,11 @@ public class HeaderItem implements TreeItem {
     public String toString() {
         return name;
     }
+
+    @Override
+    public boolean isModified() {
+        return false; //??
+    }
+    
+    
 }

libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/SWFList.java

@@ -172,4 +172,16 @@ public class SWFList implements List<SWF>, SWFContainerItem {
     public List<SWF> subList(int i, int i1) {
         return swfs.subList(i, i1);
     }
+
+    @Override
+    public boolean isModified() {
+        for(SWF s:swfs){
+            if(s.isModified()){
+                return true;
+            }
+        }
+        return false;
+    }
+    
+    
 }

libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/treeitems/TreeItem.java

@@ -25,4 +25,6 @@ import com.jpexs.decompiler.flash.SWF;
 public interface TreeItem {
 
     public SWF getSwf();
+    
+    public boolean isModified();
 }