new routine: BOOL setFirstSelectableRow

git-svn-id: http://svn.berlios.de/svnroot/repos/oolite-linux/trunk@600 127b21dd-08f5-0310-b4b7-95ae10353056

src/Core/GuiDisplayGen.h

@@ -137,6 +137,7 @@ extern int debug;
 - (int) selectedRow;
 - (BOOL) setSelectedRow:(int) row;
 - (BOOL) setNextRow:(int) direction;
+- (BOOL) setFirstSelectableRow;
 - (void) setNoSelectedRow;
 - (NSString *) selectedRowText;
 - (NSString *) selectedRowKey;

src/Core/GuiDisplayGen.m

@@ -280,6 +280,22 @@ Your fair use and other rights are in no way affected by the above.
 	return NO;
 }
 
+- (BOOL) setFirstSelectableRow
+{
+	int row = selectableRange.location;
+	while ((row >= selectableRange.location) && (row < selectableRange.location+selectableRange.length))
+	{
+		if (![[rowKey objectAtIndex:row] isEqual:GUI_KEY_SKIP])
+		{
+			selectedRow = row;
+			return YES;
+		}
+		row++;
+	}
+	selectedRow = -1;
+	return NO;
+}
+
 - (void) setNoSelectedRow
 {
 	selectedRow = -1;