src/juce_appframework/gui/components/controls/juce_ListBox.cpp

@@ -350,7 +350,6 @@ ListBox::ListBox (const String& name, ListBoxModel* const model_)
       totalItems (0),
       rowHeight (22),
       minimumRowWidth (0),
-      scrollBarSize (18),
       outlineThickness (0),
       lastRowSelected (-1),
       mouseMoveSelects (false),
@@ -424,6 +423,11 @@ void ListBox::visibilityChanged()
     viewport->updateVisibleArea (true);
 }
 
+Viewport* ListBox::getViewPort() const throw()
+{
+    return viewport;
+}
+
 //==============================================================================
 void ListBox::updateContent()
 {

src/juce_appframework/gui/components/controls/juce_ListBox.h

@@ -527,6 +527,13 @@ public:
     */
     Image* createSnapshotOfSelectedRows();
 
+    /** Returns the viewport that this ListBox uses.
+
+        You may need to use this to change parameters such as whether scrollbars
+        are shown, etc.
+    */
+    Viewport* getViewPort() const throw();
+
 
     //==============================================================================
     /** @internal */
@@ -562,7 +569,7 @@ private:
     ListViewport* viewport;
     Component* headerComponent;
     int totalItems, rowHeight, minimumRowWidth;
-    int scrollBarSize, outlineThickness;
+    int outlineThickness;
     int lastMouseX, lastMouseY, lastRowSelected;
     bool mouseMoveSelects, multipleSelection, hasDoneInitialUpdate;
     SparseSet <int> selected;

src/juce_appframework/gui/components/layout/juce_ScrollBar.cpp

@@ -102,6 +102,7 @@ ScrollBar::ScrollBar (const bool vertical_,
       minimumDelayInMillisecs (10),
       vertical (vertical_),
       isDraggingThumb (false),
+      alwaysVisible (false),
       upButton (0),
       downButton (0),
       listeners (2)
@@ -234,7 +235,7 @@ void ScrollBar::updateThumbPosition() throw()
         newThumbStart += roundDoubleToInt (((rangeStart - minimum) * (thumbAreaSize - newThumbSize))
                                               / ((maximum - minimum) - rangeSize));
 
-    setVisible (maximum - minimum > rangeSize && rangeSize > 0.0);
+    setVisible (alwaysVisible || (maximum - minimum > rangeSize && rangeSize > 0.0));
 
     if (thumbStart != newThumbStart  || thumbSize != newThumbSize)
     {
@@ -283,6 +284,12 @@ void ScrollBar::setButtonVisibility (const bool buttonsAreVisible)
     updateThumbPosition();
 }
 
+void ScrollBar::setAutoHide (const bool shouldHideWhenFullRange)
+{
+    alwaysVisible = ! shouldHideWhenFullRange;
+    updateThumbPosition();
+}
+
 //==============================================================================
 void ScrollBar::paint (Graphics& g)
 {

src/juce_appframework/gui/components/layout/juce_ScrollBar.h

@@ -116,6 +116,14 @@ public:
     /** Shows or hides the scrollbar's buttons. */
     void setButtonVisibility (const bool buttonsAreVisible);
 
+    /** Tells the scrollbar whether to make itself invisible when not needed.
+
+        The default behaviour is for a scrollbar to become invisible when the thumb
+        fills the whole of its range (i.e. when it can't be moved). Setting this
+        value to false forces the bar to always be visible.
+    */
+    void setAutoHide (const bool shouldHideWhenFullRange);
+
     //==============================================================================
     /** Sets the minimum and maximum values that the bar will move between.
 
@@ -287,7 +295,7 @@ private:
     int thumbAreaStart, thumbAreaSize, thumbStart, thumbSize;
     int dragStartMousePos, lastMousePos;
     int initialDelayInMillisecs, repeatDelayInMillisecs, minimumDelayInMillisecs;
-    bool vertical, isDraggingThumb;
+    bool vertical, isDraggingThumb, alwaysVisible;
     Button* upButton;
     Button* downButton;
     SortedSet <void*> listeners;