Fix bug #6263: Order of Tabs in Menu and used in Ctrl+PgUp/PgDwn is not the same as in the workarea.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@36625 a592a061-630c-0410-9148-cb99ea01b6c8

src/frontends/qt4/GuiView.cpp

@@ -1177,6 +1177,15 @@ void GuiView::setBusy(bool busy)
 }
 
 
+GuiWorkArea * GuiView::workArea(int index)
+{
+	if (TabWorkArea * twa = d.currentTabWorkArea())
+		if (index < twa->count())
+			return dynamic_cast<GuiWorkArea *>(twa->widget(index));
+	return 0;
+}
+
+
 GuiWorkArea * GuiView::workArea(Buffer & buffer)
 {
 	if (currentWorkArea()
@@ -2581,24 +2590,24 @@ bool GuiView::inMultiViews(GuiWorkArea * wa)
 
 void GuiView::gotoNextOrPreviousBuffer(NextOrPrevious np)
 {
-	Buffer * const curbuf = documentBufferView()
-		? &documentBufferView()->buffer() : 0;
-	Buffer * nextbuf = curbuf;
-	while (true) {
+	if (!documentBufferView())
+		return;
+	
+	if (TabWorkArea * twa = d.currentTabWorkArea()) {
+		Buffer * const curbuf = &documentBufferView()->buffer();
+		int nwa = twa->count();
+		for (int i = 0; i < nwa; ++i) {
+			if (&workArea(i)->bufferView().buffer() == curbuf) {
+				int next_index;
 				if (np == NEXTBUFFER)
-			nextbuf = theBufferList().next(nextbuf);
+					next_index = (i == nwa - 1 ? 0 : i + 1);
 				else
-			nextbuf = theBufferList().previous(nextbuf);
-		if (nextbuf == curbuf)
-			break;
-		if (nextbuf == 0) {
-			nextbuf = curbuf;
+					next_index = (i == 0 ? nwa - 1 : i - 1);
+				setBuffer(&workArea(next_index)->bufferView().buffer());
 				break;
 			}
-		if (workArea(*nextbuf))
-			break;
 		}
-	setBuffer(nextbuf);
+	}
 }
 
 

src/frontends/qt4/GuiView.h

@@ -184,6 +184,8 @@ public:
 	/// \return the \c Workarea associated to \p  Buffer
 	/// \retval 0 if no \c WorkArea is found.
 	GuiWorkArea * workArea(Buffer & buffer);
+	/// \return the \c Workarea at index \c index
+	GuiWorkArea * workArea(int index);
 
 	/// Add a \c WorkArea 
 	/// \return the \c Workarea associated to \p  Buffer

src/frontends/qt4/Menus.cpp

@@ -21,6 +21,7 @@
 #include "Action.h"
 #include "GuiApplication.h"
 #include "GuiView.h"
+#include "GuiWorkArea.h"
 #include "qt_helpers.h"
 
 #include "BiblioInfo.h"
@@ -894,36 +895,49 @@ void MenuDefinition::expandDocuments()
 	item.setSubmenu(MenuDefinition(qt_("Hidden|H")));
 
 	Buffer * first = theBufferList().first();
-	if (first) {
-		Buffer * b = first;
-		int vis = 1;
-		int invis = 1;
+	if (!first) {
+		add(MenuItem(MenuItem::Info, qt_("<No Documents Open>")));
+		return;
+	}
 
+	int i = 0;
+	while (true) {
+		GuiWorkArea * wa = guiApp->currentView()->workArea(i);
+		if (!wa)
+			break;
+		Buffer const & b = wa->bufferView().buffer();
+		QString label = toqstr(b.fileName().displayName(20));
+		if (!b.isClean())
+			label += "*";
+		if (i < 10)
+			label = QString::number(i) + ". " + label + '|' + QString::number(i);
+		add(MenuItem(MenuItem::Command, label,
+			FuncRequest(LFUN_BUFFER_SWITCH, b.absFileName())));
+		++i;
+	}
+
+
+	i = 0;
+	Buffer * b = first;
 	// We cannot use a for loop as the buffer list cycles.
 	do {
+		bool const shown = guiApp->currentView()
+			? guiApp->currentView()->workArea(*b) : false;
+		if (!shown) {
 			QString label = toqstr(b->fileName().displayName(20));
 			if (!b->isClean())
 				label += "*";
-			bool const shown = guiApp->currentView()
-					   ? guiApp->currentView()->workArea(*b) : false;
-			int ii = shown ? vis : invis;
-			if (ii < 10)
-				label = QString::number(ii) + ". " + label + '|' + QString::number(ii);
-			if (shown) {
-				add(MenuItem(MenuItem::Command, label,
-					FuncRequest(LFUN_BUFFER_SWITCH, b->absFileName())));
-				++vis;
-			} else {
+			if (i < 10)
+				label = QString::number(i) + ". " + label + '|' + QString::number(i);
 			item.submenu().add(MenuItem(MenuItem::Command, label,
 				FuncRequest(LFUN_BUFFER_SWITCH, b->absFileName())));
-				++invis;
+			++i;
 		}
 		b = theBufferList().next(b);
 	} while (b != first); 
+	
 	if (!item.submenu().empty())
 		add(item);
-	} else
-		add(MenuItem(MenuItem::Info, qt_("<No Documents Open>")));
 }