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Moved all interface headers into a 'wx' subdirectory for proper use of Doxygen path settings.

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@54385 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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Bryan Petty
2008-06-27 16:22:58 +00:00
parent 92b6654b66
commit ae3c17b401
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/////////////////////////////////////////////////////////////////////////////
// Name: vlbox.h
// Purpose: interface of wxVListBox
// Author: wxWidgets team
// RCS-ID: $Id$
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
/**
@class wxVListBox
@wxheader{vlbox.h}
wxVListBox is a wxListBox-like control with the following two main
differences from a regular wxListBox: it can have an arbitrarily huge
number of items because it doesn't store them itself but uses the
OnDrawItem() callback to draw them (so it is a virtual listbox) and its
items can have variable height as determined by OnMeasureItem() (so it is
also a listbox with the lines of variable height).
Also, as a consequence of its virtual nature, it doesn't have any methods
to append or insert items in it as it isn't necessary to do it: you just
have to call SetItemCount() to tell the control how many items it should
display. Of course, this also means that you will never use this class
directly because it has pure virtual functions, but will need to derive
your own class from it (for example, wxHtmlListBox).
However it emits the same events as wxListBox and the same event macros may
be used with it. Since wxVListBox does not store its items itself, the
events will only contain the index, not any contents such as the string of
an item.
@library{wxcore}
@category{ctrl}
<!-- @appearance{vlistbox.png} -->
@see wxSimpleHtmlListBox, wxHtmlListBox
*/
class wxVListBox : public wxVScrolledWindow
{
public:
/**
Default constructor, you must call Create() later.
*/
wxVListBox();
/**
Normal constructor which calls Create() internally.
*/
wxVListBox(wxWindow* parent, wxWindowID id = wxID_ANY,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = 0, const wxString& name = wxVListBoxNameStr);
/**
Destructor.
*/
virtual ~wxVListBox();
/**
Deletes all items from the control.
*/
void Clear();
/**
Creates the control. To finish creating it you also should call
SetItemCount() to let it know about the number of items it contains.
The only special style which may be used with wxVListBox is
@c wxLB_MULTIPLE which indicates that the listbox should support
multiple selection.
@return @true on success or @false if the control couldn't be created.
*/
bool Create(wxWindow* parent, wxWindowID id = wxID_ANY,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize, long style = 0,
const wxString& name = wxVListBoxNameStr);
/**
Deselects all the items in the listbox. This method is only valid for
multi selection listboxes.
@return @true if any items were changed, i.e. if there had been any
selected items before, or @false if all the items were already
deselected.
@see SelectAll(), Select()
*/
bool DeselectAll();
/**
Returns the index of the first selected item in the listbox or
@c wxNOT_FOUND if no items are currently selected.
@a cookie is an opaque parameter which should be passed to the
subsequent calls to GetNextSelected(). It is needed in order to allow
parallel iterations over the selected items.
Here is a typical example of using these functions:
@code
unsigned long cookie;
int item = hlbox->GetFirstSelected(cookie);
while ( item != wxNOT_FOUND )
{
// ... process item ...
item = hlbox->GetNextSelected(cookie);
}
@endcode
This method is only valid for multi selection listboxes.
*/
int GetFirstSelected(unsigned long& cookie) const;
/**
Get the number of items in the control.
@see SetItemCount()
*/
size_t GetItemCount() const;
/**
Returns the margins used by the control. The @c x field of the returned
point is the horizontal margin and the @c y field is the vertical one.
@see SetMargins()
*/
wxPoint GetMargins() const;
/**
Returns the index of the next selected item or @c wxNOT_FOUND if there
are no more.
This method is only valid for multi selection listboxes.
@see GetFirstSelected()
*/
int GetNextSelected(unsigned long& cookie) const;
/**
Returns the number of the items currently selected.
It is valid for both single and multi selection controls. In the former
case it may only return 0 or 1 however.
@see IsSelected(), GetFirstSelected(), GetNextSelected()
*/
size_t GetSelectedCount() const;
/**
Get the currently selected item or @c wxNOT_FOUND if there is no
selection.
*/
int GetSelection() const;
/**
Returns the background colour used for the selected cells. By default
the standard system colour is used.
@see wxSystemSettings::GetColour(), SetSelectionBackground()
*/
const wxColour& GetSelectionBackground() const;
/**
Returns @true if the listbox was created with @c wxLB_MULTIPLE style
and so supports multiple selection or @false if it is a single
selection listbox.
*/
bool HasMultipleSelection() const;
/**
Returns @true if this item is the current one, @false otherwise.
The current item is always the same as selected one for the single
selection listbox and in this case this method is equivalent to
IsSelected() but they are different for multi selection listboxes where
many items may be selected but only one (at most) is current.
*/
bool IsCurrent(size_t item) const;
/**
Returns @true if this item is selected, @false otherwise.
*/
bool IsSelected(size_t item) const;
/**
This method is used to draw the items background and, maybe, a border
around it.
The base class version implements a reasonable default behaviour which
consists in drawing the selected item with the standard background
colour and drawing a border around the item if it is either selected or
current.
@todo Change this function signature to non-const.
*/
void OnDrawBackground(wxDC& dc, const wxRect& rect, size_t n) const;
/**
The derived class must implement this function to actually draw the
item with the given index on the provided DC.
@param dc
The device context to use for drawing.
@param rect
The bounding rectangle for the item being drawn (DC clipping
region is set to this rectangle before calling this function).
@param n
The index of the item to be drawn.
@todo Change this function signature to non-const.
*/
virtual void OnDrawItem(wxDC& dc, const wxRect& rect, size_t n) const;
/**
This method may be used to draw separators between the lines. The
rectangle passed to it may be modified, typically to deflate it a bit
before passing to OnDrawItem().
The base class version of this method doesn't do anything.
@param dc
The device context to use for drawing.
@param rect
The bounding rectangle for the item.
@param n
The index of the item.
@todo Change this function signature to non-const.
*/
virtual void OnDrawSeparator(wxDC& dc, wxRect& rect, size_t n) const;
/**
The derived class must implement this method to return the height of
the specified item (in pixels).
*/
virtual wxCoord OnMeasureItem(size_t n) const;
/**
Selects or deselects the specified item which must be valid (i.e. not
equal to @c wxNOT_FOUND).
@return @true if the items selection status has changed or @false
otherwise.
This function is only valid for the multiple selection listboxes, use
SetSelection() for the single selection ones.
*/
bool Select(size_t item, bool select = true);
/**
Selects all the items in the listbox.
@return @true if any items were changed, i.e. if there had been any
unselected items before, or @false if all the items were
already selected.
This method is only valid for multi selection listboxes.
@see DeselectAll(), Select()
*/
bool SelectAll();
/**
Selects all items in the specified range which may be given in any
order.
@return @true if the items selection status has changed or @false
otherwise.
This method is only valid for multi selection listboxes.
@see SelectAll(), Select()
*/
bool SelectRange(size_t from, size_t to);
/**
Set the number of items to be shown in the control.
This is just a synonym for wxVScrolledWindow::SetRowCount().
*/
void SetItemCount(size_t count);
//@{
/**
Set the margins: horizontal margin is the distance between the window
border and the item contents while vertical margin is half of the
distance between items.
By default both margins are 0.
*/
void SetMargins(const wxPoint& pt);
void SetMargins(wxCoord x, wxCoord y);
//@}
/**
Set the selection to the specified item, if it is -1 the selection is
unset. The selected item will be automatically scrolled into view if it
isn't currently visible.
This method may be used both with single and multiple selection
listboxes.
*/
void SetSelection(int selection);
/**
Sets the colour to be used for the selected cells background. The
background of the standard cells may be changed by simply calling
wxWindow::SetBackgroundColour().
@note Using a non-default background colour may result in control
having an appearance different from the similar native controls
and should be avoided in general.
@see GetSelectionBackground()
*/
void SetSelectionBackground(const wxColour& col);
/**
Toggles the state of the specified @a item, i.e. selects it if it was
unselected and deselects it if it was selected.
This method is only valid for multi selection listboxes.
@see Select()
*/
void Toggle(size_t item);
};