From f69c0d399c57d25cda78177a197a0b71d1dc5118 Mon Sep 17 00:00:00 2001
From: nyamatongwe <devnull@localhost>
Date: Fri, 10 Jul 2009 04:24:46 +0000
Subject: Duplicate works on discontiguous selections by duplicating each
 selection. UndoGroup class simplifies grouping actions together in the undo
 history.

---
 src/Document.h | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'src/Document.h')

diff --git a/src/Document.h b/src/Document.h
index 4751cd2c8..240d59e39 100644
--- a/src/Document.h
+++ b/src/Document.h
@@ -320,6 +320,27 @@ private:
 	void NotifyModified(DocModification mh);
 };
 
+class UndoGroup {
+	Document *pdoc;
+	bool groupNeeded;
+public:
+	UndoGroup(Document *pdoc_, bool groupNeeded_=true) : 
+		pdoc(pdoc_), groupNeeded(groupNeeded_) {
+		if (groupNeeded) {
+			pdoc->BeginUndoAction();
+		}
+	}
+	~UndoGroup() {
+		if (groupNeeded) {
+			pdoc->EndUndoAction();
+		}
+	}
+	bool Needed() const {
+		return groupNeeded;
+	}
+};
+
+
 /**
  * To optimise processing of document modifications by DocWatchers, a hint is passed indicating the
  * scope of the change.
-- 
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