* Introduced methods ResizeColumnToPreferred() and

ResizeAllColumnsToPreferred().
* Automatic white space cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30683 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/interface/ColumnListView.h

@@ -302,6 +302,8 @@ public:
 			void				SetColumnVisible(int32, bool);
 			bool				IsColumnVisible(int32) const;
 			void				SetColumnFlags(column_flags flags);
+			void				ResizeColumnToPreferred(int32 index);
+			void				ResizeAllColumnsToPreferred();
 
 	// Row manipulation
 			const BRow*			RowAt(int32 index, BRow *parent = 0) const;

src/kits/interface/ColumnListView.cpp

@@ -219,6 +219,7 @@ public:
 	virtual						~TitleView();
 
 			void				ColumnAdded(BColumn* column);
+			void				ColumnResized(BColumn* column, float oldWidth);
 			void				SetColumnVisible(BColumn* column, bool visible);
 
 	virtual	void				Draw(BRect updateRect);
@@ -1149,6 +1150,38 @@ BColumnListView::SetColumnFlags(column_flags flags)
 }
 
 
+void
+BColumnListView::ResizeColumnToPreferred(int32 index)
+{
+	BColumn* column = ColumnAt(index);
+	if (column == NULL)
+		return;
+
+	// get the preferred column width
+	float width = fOutlineView->GetColumnPreferredWidth(column);
+	if (width < column->MinWidth())
+		width = column->MinWidth();
+	else if (width > column->MaxWidth())
+		width = column->MaxWidth();
+
+	// set it
+	float oldWidth = column->Width();
+	column->SetWidth(width);
+
+	fTitleView->ColumnResized(column, oldWidth);
+	fOutlineView->Invalidate();
+}
+
+
+void
+BColumnListView::ResizeAllColumnsToPreferred()
+{
+	int32 count = CountColumns();
+	for (int32 i = 0; i < count; i++)
+		ResizeColumnToPreferred(i);
+}
+
+
 const BRow*
 BColumnListView::RowAt(int32 Index, BRow* parentRow) const
 {
@@ -2070,6 +2103,15 @@ TitleView::ColumnAdded(BColumn* column)
 }
 
 
+void
+TitleView::ColumnResized(BColumn* column, float oldWidth)
+{
+	fColumnsWidth += column->Width() - oldWidth;
+	FixScrollBar(false);
+	Invalidate();
+}
+
+
 void
 TitleView::SetColumnVisible(BColumn* column, bool visible)
 {