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

@@ -208,12 +208,25 @@ public:
         getViewedComponent()->deleteAllChildren();
     }
 
-    ListBoxRowComponent* getComponentForRow (const int row) const
+    ListBoxRowComponent* getComponentForRow (const int row) const throw()
     {
-        return (ListBoxRowComponent*) getViewedComponent()->getChildComponent (row % jmax (1, getViewedComponent()->getNumChildComponents()));
+        return (ListBoxRowComponent*) getViewedComponent()
+                    ->getChildComponent (row % jmax (1, getViewedComponent()->getNumChildComponents()));
     }
 
-    Component* getComponentForRowIfOnscreen (const int row) const
+    int getRowNumberOfComponent (Component* const rowComponent) const throw()
+    {
+        const int index = getIndexOfChildComponent (rowComponent);
+        const int num = getViewedComponent()->getNumChildComponents();
+
+        for (int i = num; --i >= 0;)
+            if (((firstIndex + i) % jmax (1, num)) == index)
+                return firstIndex + i;
+
+        return -1;
+    }
+
+    Component* getComponentForRowIfOnscreen (const int row) const throw()
     {
         return (row >= firstIndex && row < firstIndex + getViewedComponent()->getNumChildComponents())
                  ? getComponentForRow (row) : 0;
@@ -231,10 +244,10 @@ public:
     {
         hasUpdated = false;
 
-        int newX = getViewedComponent()->getX();
+        const int newX = getViewedComponent()->getX();
         int newY = getViewedComponent()->getY();
-        int newW = jmax (owner.minimumRowWidth, getMaximumVisibleWidth());
-        int newH = owner.totalItems * owner.getRowHeight();
+        const int newW = jmax (owner.minimumRowWidth, getMaximumVisibleWidth());
+        const int newH = owner.totalItems * owner.getRowHeight();
 
         if (newY + newH < getMaximumVisibleHeight() && newH > getMaximumVisibleHeight())
             newY = getMaximumVisibleHeight() - newH;
@@ -601,7 +614,7 @@ int ListBox::getLastRowSelected() const
 }
 
 //==============================================================================
-int ListBox::getRowContainingPosition (const int x, const int y) const
+int ListBox::getRowContainingPosition (const int x, const int y) const throw()
 {
     if (x >= 0 && x < getWidth())
     {
@@ -614,13 +627,18 @@ int ListBox::getRowContainingPosition (const int x, const int y) const
     return -1;
 }
 
-Component* ListBox::getComponentForRowNumber (const int row) const
+Component* ListBox::getComponentForRowNumber (const int row) const throw()
 {
     Component* const listRowComp = viewport->getComponentForRowIfOnscreen (row);
     return listRowComp != 0 ? listRowComp->getChildComponent (0) : 0;
 }
 
-const Rectangle ListBox::getRowPosition (const int rowNumber) const
+int ListBox::getRowNumberOfComponent (Component* const rowComponent) const throw()
+{
+    return viewport->getRowNumberOfComponent (rowComponent);
+}
+
+const Rectangle ListBox::getRowPosition (const int rowNumber) const throw()
 {
     const int rowHeight = getRowHeight();
 
@@ -644,7 +662,7 @@ double ListBox::getVerticalPosition() const
                            : 0;
 }
 
-int ListBox::getVisibleRowWidth() const
+int ListBox::getVisibleRowWidth() const throw()
 {
     return viewport->getViewWidth();
 }
@@ -800,17 +818,17 @@ void ListBox::setMinimumContentWidth (const int newMinimumWidth)
     updateContent();
 }
 
-int ListBox::getVisibleContentWidth() const
+int ListBox::getVisibleContentWidth() const throw()
 {
     return viewport->getMaximumVisibleWidth();
 }
 
-ScrollBar* ListBox::getVerticalScrollBar() const
+ScrollBar* ListBox::getVerticalScrollBar() const throw()
 {
     return viewport->getVerticalScrollBar();
 }
 
-ScrollBar* ListBox::getHorizontalScrollBar() const
+ScrollBar* ListBox::getHorizontalScrollBar() const throw()
 {
     return viewport->getHorizontalScrollBar();
 }
@@ -842,7 +860,7 @@ void ListBox::setHeaderComponent (Component* const newHeaderComponent)
     }
 }
 
-void ListBox::repaintRow (const int rowNumber)
+void ListBox::repaintRow (const int rowNumber) throw()
 {
     const Rectangle r (getRowPosition (rowNumber));
     repaint (r.getX(), r.getY(), r.getWidth(), r.getHeight());

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

@@ -359,13 +359,13 @@ public:
 
         (Unlikely to be useful for most people).
     */
-    ScrollBar* getVerticalScrollBar() const;
+    ScrollBar* getVerticalScrollBar() const throw();
 
     /** Returns a pointer to the scrollbar.
 
         (Unlikely to be useful for most people).
     */
-    ScrollBar* getHorizontalScrollBar() const;
+    ScrollBar* getHorizontalScrollBar() const throw();
 
     /** Finds the row index that contains a given x,y position.
 
@@ -375,7 +375,15 @@ public:
 
         @see getComponentForRowNumber
     */
-    int getRowContainingPosition (const int x, const int y) const;
+    int getRowContainingPosition (const int x, const int y) const throw();
+
+    /** Returns the position of one of the rows, relative to the top-left of
+        the listbox.
+
+        This may be off-screen, and the range of the row number that is passed-in is
+        not checked to see if it's a valid row.
+    */
+    const Rectangle getRowPosition (const int rowNumber) const throw();
 
     /** Finds the row component for a given row in the list.
 
@@ -386,20 +394,18 @@ public:
 
         @see getRowContainingPosition
     */
-    Component* getComponentForRowNumber (const int rowNumber) const;
+    Component* getComponentForRowNumber (const int rowNumber) const throw();
 
-    /** Returns the position of one of the rows, relative to the top-left of
-        the listbox.
+    /** Returns the row number that the given component represents.
 
-        This may be off-screen, and the range of the row number that is passed-in is
-        not checked to see if it's a valid row.
+        If the component isn't one of the list's rows, this will return -1.
     */
-    const Rectangle getRowPosition (const int rowNumber) const;
+    int getRowNumberOfComponent (Component* const rowComponent) const throw();
 
     /** Returns the width of a row (which may be less than the width of this component
         if there's a scrollbar).
     */
-    int getVisibleRowWidth() const;
+    int getVisibleRowWidth() const throw();
 
     //==============================================================================
     /** Sets the height of each row in the list.
@@ -479,14 +485,14 @@ public:
     /** Returns the space currently available for the row items, taking into account
         borders, scrollbars, etc.
     */
-    int getVisibleContentWidth() const;
+    int getVisibleContentWidth() const throw();
 
     /** Repaints one of the rows.
 
         This is a lightweight alternative to calling updateContent, and just causes a
         repaint of the row's area.
     */
-    void repaintRow (const int rowNumber);
+    void repaintRow (const int rowNumber) throw();
 
     /** This fairly obscure method creates an image that just shows the currently
         selected row components.