bool IsOk() const;
};
+/**
+ Class defining sort order for the items in wxTreeListCtrl.
+
+ @see wxTreeListCtrl
+
+ @library{wxadv}
+ @category{ctrl}
+
+ @since 2.9.3
+ */
+class wxTreeListItemComparator
+{
+public:
+ /**
+ Default constructor.
+
+ Notice that this class is not copyable, comparators are not passed by
+ value.
+ */
+ wxTreeListItemComparator();
+
+ /**
+ Pure virtual function which must be overridden to define sort order.
+
+ The comparison function should return negative, null or positive value
+ depending on whether the first item is less than, equal to or greater
+ than the second one. The items should be compared using their values
+ for the given column.
+
+ @param treelist
+ The control whose contents is being sorted.
+ @param column
+ The column of this control used for sorting.
+ @param first
+ First item to compare.
+ @param second
+ Second item to compare.
+ @return
+ A negative value if the first item is less than (i.e. should appear
+ above) the second one, zero if the two items are equal or a
+ positive value if the first item is greater than (i.e. should
+ appear below) the second one.
+ */
+ virtual int
+ Compare(wxTreeListCtrl* treelist,
+ unsigned column,
+ wxTreeListItem first,
+ wxTreeListItem second) = 0;
+
+ /**
+ Trivial but virtual destructor.
+
+ Although this class is not used polymorphically by wxWidgets itself,
+ provide virtual dtor in case it's used like this in the user code.
+ */
+ virtual ~wxTreeListItemComparator();
+};
+
/**
Container of multiple items.
*/
the other columns.
+ Unlike wxTreeCtrl or wxListCtrl this control can sort its items on its own.
+ To allow user to sort the control contents by clicking on some column you
+ should use wxCOL_SORTABLE flag when adding that column to the control. When
+ a column with this flag is clicked, the control resorts itself using the
+ values in this column. By default the sort is done using alphabetical order
+ comparison of the items text, which is not always correct (e.g. this
+ doesn't work for the numeric columns). To change this you may use
+ SetItemComparator() method to provide a custom comparator, i.e. simply an
+ object that implements comparison between the two items. The treelist
+ sample shows an example of doing this. And if you need to sort the control
+ programmatically, you can call SetSortColumn() method.
+
+
Here are the styles supported by this control. Notice that using
wxTL_USER_3STATE implies wxTL_3STATE and wxTL_3STATE in turn implies
wxTL_CHECKBOX.
the expansion of the given branch. This event is sent after the
expansion occurs and can't be vetoed.
@event{EVT_TREELIST_ITEM_CHECKED(id, func)}
- Process @c wxEVT_COMMAND_TREELIST_ITEM_CHeCKED event notifying about
+ Process @c wxEVT_COMMAND_TREELIST_ITEM_CHECKED event notifying about
the user checking or unchecking the item. You can use
wxTreeListCtrl::GetCheckedState() to retrieve the new item state and
wxTreeListEvent::GetOldCheckedState() to get the previous one.
@event{EVT_TREELIST_ITEM_CONTEXT_MENU(id, func)}
Process @c wxEVT_COMMAND_TREELIST_ITEM_CONTEXT_MENU event indicating
that the popup menu for the given item should be displayed.
+ @event{EVT_TREELIST_COLUMN_SORTED(id, func)}
+ Process @c wxEVT_COMMAND_TREELIST_COLUMN_SORTED event indicating that
+ the control contents has just been resorted using the specified column.
+ The event doesn't carry the sort direction, use GetSortColumn() method
+ if you need to know it.
@endEventTable
@library{wxadv}
@param width
The width of the column in pixels or the special
wxCOL_WIDTH_AUTOSIZE value indicating that the column should adjust
- to its contents.
+ to its contents. Notice that the first column is special and will
+ be always resized to fill all the space not taken by the other
+ columns, i.e. the width specified here is ignored for it.
@param align
Alignment of both the column header and its items.
@param flags
- Column flags, currently can only include wxCOL_RESIZABLE to allow
- the user to resize the column.
+ Column flags, currently can include wxCOL_RESIZABLE to allow the
+ user to resize the column and wxCOL_SORTABLE to allow the user to
+ resort the control contents by clicking on this column.
@return
Index of the new column or -1 on failure.
*/
Set column width to either the given value in pixels or to the value
large enough to fit all of the items if width is wxCOL_WIDTH_AUTOSIZE.
+
+ Notice that setting the width of the first column is ignored as this
+ column is always resized to fill the space left by the other columns.
*/
void SetColumnWidth(unsigned col, int width);
//@}
+ /**
+ Sorting.
+
+ If some control columns were added with wxCOL_SORTABLE flag, clicking
+ on them will automatically resort the control using the custom
+ comparator set by SetItemComparator() or by doing alphabetical
+ comparison by default.
+
+ In any case, i.e. even if the user can't sort the control by clicking
+ on its header, you may call SetSortColumn() to sort it programmatically
+ and call GetSortColumn() to determine whether it's sorted now and, if
+ so, by which column and in which order.
+ */
+ //@{
+
+ /**
+ Set the column to use for sorting and the order in which to sort.
+
+ Calling this method resorts the control contents using the values of
+ the items in the specified column. Sorting uses custom comparator set
+ with SetItemComparator() or alphabetical comparison of items texts if
+ none was specified.
+
+ Notice that currently there is no way to reset sort order.
+
+ @param col
+ A valid column index.
+ @param ascendingOrder
+ Indicates whether the items should be sorted in ascending (A to Z)
+ or descending (Z to A) order.
+ */
+ void SetSortColumn(unsigned col, bool ascendingOrder = true);
+
+ /**
+ Return the column currently used for sorting, if any.
+
+ If the control is currently unsorted, the function simply returns
+ @false and doesn't modify any of its output parameters.
+
+ @param col
+ Receives the index of the column used for sorting if non-@NULL.
+ @param ascendingOrder
+ Receives @true or @false depending on whether the items are sorted
+ in ascending or descending order.
+ @return
+ @true if the control is sorted or @false if it isn't sorted at all.
+ */
+ bool GetSortColumn(unsigned* col, bool* ascendingOrder = NULL);
+
+ /**
+ Set the object to use for comparing the items.
+
+ This object will be used when the control is being sorted because the
+ user clicked on a sortable column or SetSortColumn() was called.
+
+ The provided pointer is stored by the control so the object it points
+ to must have a life-time equal or greater to that of the control
+ itself. In addition, the pointer can be @NULL to stop using custom
+ comparator and revert to the default alphabetical comparison.
+ */
+ void SetItemComparator(wxTreeListItemComparator* comparator);
+
+ //@}
+
+
/**
View window.
/**
Return the previous state of the item checkbox.
- This method can be used with @c wxEVT_COMMAND_TREELIST_ITEM_CHeCKED
+ This method can be used with @c wxEVT_COMMAND_TREELIST_ITEM_CHECKED
events only.
Notice that the new state of the item can be retrieved using
wxTreeListCtrl::GetCheckedState().
*/
wxCheckBoxState GetOldCheckedState() const;
+
+ /**
+ Return the column affected by the event.
+
+ This is currently only used with @c wxEVT_COMMAND_TREELIST_COLUMN_SORTED
+ event.
+ */
+ unsigned GetColumn() const;
};
*/
#define wxTreeListEventHandler(func) \
wxEVENT_HANDLER_CAST(wxTreeListEventFunction, func)
-
-#endif // _WX_TREELIST_H_
projects / wxWidgets.git / blobdiff