From b0177410b0c49146a49254ac1ca3fd0d96d7cee4 Mon Sep 17 00:00:00 2001
From: Richard Heck <rgheck@comcast.net>
Date: Wed, 25 Mar 2009 14:34:42 +0000
Subject: [PATCH] Make LFUN_BUFFER_NEXT and _PREVIOUS skip documents that are
 open but not shown.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@28900 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/frontends/qt4/GuiView.cpp | 26 ++++++++++++++++++++++++--
 src/frontends/qt4/GuiView.h   |  6 ++++++
 2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/src/frontends/qt4/GuiView.cpp b/src/frontends/qt4/GuiView.cpp
index 4ceaea36a1..4c0f10506c 100644
--- a/src/frontends/qt4/GuiView.cpp
+++ b/src/frontends/qt4/GuiView.cpp
@@ -1928,6 +1928,28 @@ bool GuiView::closeBuffer(Buffer & buf, bool tolastopened)
 }
 
 
+void GuiView::gotoNextOrPreviousBuffer(NextOrPrevious np)
+{
+	Buffer * const curbuf = buffer();
+	Buffer * nextbuf = curbuf;
+	while (true) {
+		if (np == NEXTBUFFER)
+			nextbuf = theBufferList().next(nextbuf);
+		else
+			nextbuf = theBufferList().previous(nextbuf);
+		if (nextbuf == curbuf)
+			break;
+		if (nextbuf == 0) {
+			nextbuf = curbuf;
+			break;
+		}
+		if (workArea(*nextbuf))
+			break;
+	}
+	setBuffer(nextbuf);
+}
+
+
 bool GuiView::dispatch(FuncRequest const & cmd)
 {
 	BufferView * bv = view();
@@ -1946,11 +1968,11 @@ bool GuiView::dispatch(FuncRequest const & cmd)
 			break;
 
 		case LFUN_BUFFER_NEXT:
-			setBuffer(theBufferList().next(buffer()));
+			gotoNextOrPreviousBuffer(NEXTBUFFER);
 			break;
 
 		case LFUN_BUFFER_PREVIOUS:
-			setBuffer(theBufferList().previous(buffer()));
+			gotoNextOrPreviousBuffer(PREVBUFFER);
 			break;
 
 		case LFUN_COMMAND_EXECUTE: {
diff --git a/src/frontends/qt4/GuiView.h b/src/frontends/qt4/GuiView.h
index 98efa5607c..c3f5d5b53d 100644
--- a/src/frontends/qt4/GuiView.h
+++ b/src/frontends/qt4/GuiView.h
@@ -295,6 +295,12 @@ private:
 	bool saveBuffer(Buffer & b);
 	///
 	bool closeBuffer(Buffer & buf, bool tolastopened = false);
+	enum NextOrPrevious {
+		NEXTBUFFER,
+		PREVBUFFER
+	};
+	///
+	void gotoNextOrPreviousBuffer(NextOrPrevious np);
 
 	///
 	Inset * getOpenInset(std::string const & name) const;
-- 
2.39.5