diff -r fd1b68b48422 -r 15a9291b9bd0 HVScrollableView.st
--- a/HVScrollableView.st	Sat Dec 11 02:41:07 1993 +0100
+++ b/HVScrollableView.st	Sat Dec 11 02:51:34 1993 +0100
@@ -25,23 +25,23 @@
 a view containing both horizontal and vertical scrollbars
 and some other (slave-)view
 
-$Header: /cvs/stx/stx/libwidg/HVScrollableView.st,v 1.3 1993-10-13 02:48:04 claus Exp $
+$Header: /cvs/stx/stx/libwidg/HVScrollableView.st,v 1.4 1993-12-11 01:44:59 claus Exp $
 written jan 91 by claus
 '!
 
 !HVScrollableView methodsFor:'initialization'!
 
 initializeFor:aViewClass
-    |negativeOffset halfMargin|
+    |negativeOffset halfMargin lock|
+
+    hScrollBar := HorizontalScrollBar in:self.
 
     super initializeFor:aViewClass.
 
     negativeOffset := borderWidth negated.
     halfMargin := innerMargin // 2.
 
-    "create the horizontal scrollbar and change vertical scrollbars size"
-
-    hScrollBar := HorizontalScrollBar in:self.
+    "change vertical scrollbars size"
 
     self is3D ifTrue:[
         scrollBar extent:[scrollBar width
@@ -49,12 +49,15 @@
                           (height - hScrollBar height - innerMargin)
                          ]
     ] ifFalse:[
+"
         aViewClass isNil ifTrue:[
+"
             scrollBar extent:[scrollBar width
                               @
                               (height - hScrollBar height
                                       - (1 * hScrollBar borderWidth))
                              ]
+"
         ] ifFalse:[
             scrollBar extent:[scrollBar width
                               @
@@ -63,13 +66,10 @@
                                       - scrolledView borderWidth)
                              ]
         ]
+"
     ].
 
     hScrollBar thumbOrigin:0 thumbHeight:100.
-    hScrollBar scrollAction:[:position | 
-                                scrolledView scrollHorizontalToPercent:position].
-    hScrollBar scrollLeftAction:[scrolledView scrollLeft].
-    hScrollBar scrollRightAction:[scrolledView scrollRight].
     self is3D ifTrue:[
         hScrollBar origin:[(scrollBar origin x + scrollBar width + innerMargin)
                            @
@@ -100,23 +100,18 @@
                 extent:[(width
                          - scrollBar width
                          - scrollBar borderWidth
-                         - scrolledView borderWidth) 
+                         "- scrolledView borderWidth") 
                         @ 
                         (height
                          - hScrollBar height
                          - hScrollBar borderWidth
-                         - scrolledView borderWidth)
+                         "- scrolledView borderWidth")
                        ]
         ].
     ].
 
     scrolledView notNil ifTrue:[
-        scrolledView
-            originChangeAction:[:aView | scrollBar setThumbOriginFor:aView.
-                                         hScrollBar setThumbOriginFor:aView].
-        scrolledView
-            contentsChangeAction:[:aView | scrollBar setThumbFor:aView.
-                                           hScrollBar setThumbFor:aView]
+        self setScrollActions
     ]
 !
 
@@ -125,9 +120,52 @@
     hScrollBar setThumbFor:scrolledView
 ! !
 
+!HVScrollableView methodsFor:'private'!
+
+setScrollActions
+    |lock|
+
+    lock := false.
+
+    scrollBar scrollAction:[:position |
+        lock := true.
+        scrolledView scrollVerticalToPercent:position.
+        lock := false
+    ].
+    scrollBar scrollUpAction:[scrolledView scrollUp].
+    scrollBar scrollDownAction:[scrolledView scrollDown].
+
+    hScrollBar scrollAction:[:position |
+        lock := true.
+        scrolledView scrollHorizontalToPercent:position.
+        lock := false
+    ].
+    hScrollBar scrollLeftAction:[scrolledView scrollLeft].
+    hScrollBar scrollRightAction:[scrolledView scrollRight].
+
+    scrolledView originChangeAction:[:aView |
+        lock ifFalse:[
+            scrollBar setThumbOriginFor:aView.
+            hScrollBar setThumbOriginFor:aView
+        ]
+    ].
+    scrolledView contentsChangeAction:[:aView | 
+        scrollBar setThumbFor:aView.
+        hScrollBar setThumbFor:aView
+    ]
+! !
+
 !HVScrollableView methodsFor:'accessing'!
 
+horizontalScrollBar
+    "return the horizontal scrollbar"
+
+    ^ hScrollBar
+!
+
 scrolledView:aView
+    "set the scrolled view"
+
     super scrolledView:aView.
 
     "redefine subviews size"
@@ -145,12 +183,7 @@
                    ]
     ].
 
-    scrolledView
-        originChangeAction:[:aView | scrollBar setThumbOriginFor:aView.
-                                     hScrollBar setThumbOriginFor:aView].
-    scrolledView
-        contentsChangeAction:[:aView | scrollBar setThumbFor:aView.
-                                       hScrollBar setThumbFor:aView]
+    self setScrollActions
 ! !
 
 !HVScrollableView methodsFor:'event processing'!