Fixed Folder preview - GFX image identifiers not shown

libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/tags/Tag.java

@@ -761,4 +761,8 @@ public abstract class Tag implements NeedsCharacters, Exportable, Serializable {
         }
         return swf.getCharset();
     }
+    
+    public String getUniqueId() {
+        return null;
+    }
 }

libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/tags/base/CharacterTag.java

@@ -102,4 +102,12 @@ public abstract class CharacterTag extends Tag implements CharacterIdTag {
         }
         return (DefineScalingGridTag) swf.getCharacterIdTag(getCharacterId(), DefineScalingGridTag.ID);
     }
+
+    @Override
+    public String getUniqueId() {
+        if (getCharacterId() == -1) {
+            return null;
+        }
+        return "" + getCharacterId();
+    }        
 }

libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/tags/gfx/DefineExternalGradient.java

@@ -89,9 +89,14 @@ public class DefineExternalGradient extends Tag {
 
     @Override
     public String toString() {
-        return tagName + " (g" + gradientId + ")";
+        return tagName + " (" + getUniqueId() + ")";
     }
     
+    @Override
+    public String getUniqueId() {
+        return "g" + gradientId;
+    }  
+    
     @Override
     public void getTagInfo(TagInfo tagInfo) {
         super.getTagInfo(tagInfo);

libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/tags/gfx/DefineExternalImage2.java

@@ -259,12 +259,17 @@ public class DefineExternalImage2 extends ImageTag {
 
     @Override
     public String toString() {
-        if (unknownID == 0) {
-            return super.toString();
-        }
-        return tagName + " (i" + imageID + ")";
+        return tagName + " (" + getUniqueId() + ")";
     }
 
+    @Override
+    public String getUniqueId() {
+        if (unknownID == 0) {
+            return super.getUniqueId();
+        }
+        return "i" + imageID;
+    }        
+
     @Override
     public void setCharacterId(int characterId) {
 

libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/tags/gfx/FontTextureInfo.java

@@ -154,9 +154,14 @@ public class FontTextureInfo extends Tag {
     
     @Override
     public String toString() {
-        return tagName + " (ft" + textureID + ")";
+        return tagName + " (" + getUniqueId() + ")";
     }
     
+    @Override
+    public String getUniqueId() {
+        return "ft" + textureID;
+    }  
+    
     @Override
     public void getTagInfo(TagInfo tagInfo) {
         super.getTagInfo(tagInfo);