When pasting, try to use original range

This functionality was (accidentally?) removed by I8f8a240a. It
stops us from over-zealously balancing data when we can get away
with just pasting the original selected range (e.g. it always wraps
collections of text and content nodes in another paragraph).

Bug: 53364
Change-Id: I93fa56c4e43083993c310e0050087e9d1de1e08b

modules/ve/ce/ve.ce.Surface.js

@@ -684,17 +684,35 @@ ve.ce.Surface.prototype.onPaste = function ( e ) {
 				)
 			);
 		}
-		pasteData = slice.getBalancedData();
 
-		// Annotate
-		ve.dm.Document.addAnnotationsToData( pasteData, this.model.getInsertionAnnotations() );
+		try {
+			// Try to paste in the orignal data
+			// Take a copy to prevent the data being annotated a second time in the catch block
+			pasteData = ve.copy( slice.getData() );
 
-		// Transaction
-		tx = ve.dm.Transaction.newFromInsertion(
-			view.documentView.model,
-			selection.start,
-			pasteData
-		);
+			// Annotate
+			ve.dm.Document.addAnnotationsToData( pasteData, this.model.getInsertionAnnotations() );
+
+			// Transaction
+			tx = ve.dm.Transaction.newFromInsertion(
+				view.documentView.model,
+				selection.start,
+				pasteData
+			);
+		} catch ( e ) {
+			// If that fails, balance the data before pasting
+			pasteData = slice.getBalancedData();
+
+			// Annotate
+			ve.dm.Document.addAnnotationsToData( pasteData, this.model.getInsertionAnnotations() );
+
+			// Transaction
+			tx = ve.dm.Transaction.newFromInsertion(
+				view.documentView.model,
+				selection.start,
+				pasteData
+			);
+		}
 
 		// Restore focus and scroll position
 		view.documentView.documentNode.$[0].focus();