// Modified by:
// Created: 31.05.03
// RCS-ID: $Id$
-// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwindows.org>
+// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#define _WX_VLBOX_H_
#include "wx/vscroll.h" // base class
+#include "wx/bitmap.h"
+
+class WXDLLEXPORT wxSelectionStore;
#define wxVListBoxNameStr _T("wxVListBox")
wxWindowID id = wxID_ANY,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
- size_t countItems = 0,
long style = 0,
const wxString& name = wxVListBoxNameStr)
{
Init();
- (void)Create(parent, id, pos, size, countItems, style, name);
+ (void)Create(parent, id, pos, size, style, name);
}
// really creates the control and sets the initial number of items in it
// (which may be changed later with SetItemCount())
//
- // there are no special styles defined for wxVListBox
+ // the only special style which may be specified here is wxLB_MULTIPLE
//
// returns 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,
- size_t countItems = 0,
long style = 0,
const wxString& name = wxVListBoxNameStr);
+ // dtor does some internal cleanup (deletes m_selStore if any)
+ virtual ~wxVListBox();
+
+
+ // accessors
+ // ---------
+
+ // get the number of items in the control
+ size_t GetItemCount() const { return GetLineCount(); }
+
+ // does this control use multiple selection?
+ bool HasMultipleSelection() const { return m_selStore != NULL; }
+
+ // get the currently selected item or wxNOT_FOUND if there is no selection
+ //
+ // this method is only valid for the single selection listboxes
+ int GetSelection() const
+ {
+ wxASSERT_MSG( !HasMultipleSelection(),
+ _T("GetSelection() can't be used with wxLB_MULTIPLE") );
+
+ return m_current;
+ }
+
+ // is this item the current one?
+ bool IsCurrent(size_t item) const { return item == (size_t)m_current; }
+ #ifdef __WXUNIVERSAL__
+ bool IsCurrent() const { return wxVScrolledWindow::IsCurrent(); }
+ #endif
+
+ // is this item selected?
+ bool IsSelected(size_t item) const;
+
+ // get the number of the selected items (maybe 0)
+ //
+ // this method is valid for both single and multi selection listboxes
+ size_t GetSelectedCount() const;
+
+ // get the first selected item, returns wxNOT_FOUND if none
+ //
+ // cookie is an opaque parameter which should be passed to
+ // GetNextSelected() later
+ //
+ // this method is only valid for the multi selection listboxes
+ int GetFirstSelected(unsigned long& cookie) const;
+
+ // get next selection item, return wxNOT_FOUND if no more
+ //
+ // cookie must be the same parameter that was passed to GetFirstSelected()
+ // before
+ //
+ // this method is only valid for the multi selection listboxes
+ int GetNextSelected(unsigned long& cookie) const;
+
+ // get the margins around each item
+ wxPoint GetMargins() const { return m_ptMargins; }
+
+ // get the background colour of selected cells
+ const wxColour& GetSelectionBackground() const { return m_colBgSel; }
+
// operations
// ----------
// set the number of items to be shown in the control
//
// this is just a synonym for wxVScrolledWindow::SetLineCount()
- void SetItemCount(size_t count) { SetLineCount(count); }
+ virtual void SetItemCount(size_t count);
// delete all items from the control
void Clear() { SetItemCount(0); }
- // set the selection to the specified item, if it is -1 the selection is
- // unset
- void SetSelection(int selection) { DoSetSelection(selection, false); }
+ // set the selection to the specified item, if it is wxNOT_FOUND the
+ // selection is unset
+ //
+ // this function is only valid for the single selection listboxes
+ void SetSelection(int selection);
+
+ // selects or deselects the specified item which must be valid (i.e. not
+ // equal to wxNOT_FOUND)
+ //
+ // return true if the items selection status has changed or false
+ // otherwise
+ //
+ // this function is only valid for the multiple selection listboxes
+ bool Select(size_t item, bool select = true);
+
+ // selects the items in the specified range whose end points may be given
+ // in any order
+ //
+ // return true if any items selection status has changed, false otherwise
+ //
+ // this function is only valid for the single selection listboxes
+ bool SelectRange(size_t from, size_t to);
+
+ // toggle the selection of the specified item (must be valid)
+ //
+ // this function is only valid for the multiple selection listboxes
+ void Toggle(size_t item) { Select(item, !IsSelected(item)); }
+
+ // select all items in the listbox
+ //
+ // the return code indicates if any items were affected by this operation
+ // (true) or if nothing has changed (false)
+ bool SelectAll() { return DoSelectAll(true); }
+
+ // unselect all items in the listbox
+ //
+ // the return code has the same meaning as for SelectAll()
+ bool DeselectAll() { return DoSelectAll(false); }
// set the margins: horizontal margin is the distance between the window
// border and the item contents while vertical margin is half of the
void SetMargins(const wxPoint& pt);
void SetMargins(wxCoord x, wxCoord y) { SetMargins(wxPoint(x, y)); }
+ // change the background colour of the selected cells
+ void SetSelectionBackground(const wxColour& col);
- // accessors
- // ---------
-
- // get the number of items in the control
- size_t GetItemCount() const { return GetLineCount(); }
-
- // get the currently selected item or -1 if there is no selection
- int GetSelection() const { return m_selection; }
-
- // is this item selected?
- bool IsSelected(size_t line) const { return (int)line == m_selection; }
- // get the margins around each item
- wxPoint GetMargins() const { return m_ptMargins; }
+ virtual wxVisualAttributes GetDefaultAttributes() const
+ {
+ return GetClassDefaultAttributes(GetWindowVariant());
+ }
+ static wxVisualAttributes
+ GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
protected:
// the derived class must implement this function to actually draw the item
// the base class version doesn't do anything
virtual void OnDrawSeparator(wxDC& dc, wxRect& rect, size_t n) 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
+ virtual void OnDrawBackground(wxDC& dc, const wxRect& rect, size_t n) const;
// we implement OnGetLineHeight() in terms of OnMeasureItem() because this
// allows us to add borders to the items easily
//
- // this function is not upposed to be overridden by the derived classes
+ // this function is not supposed to be overridden by the derived classes
virtual wxCoord OnGetLineHeight(size_t line) const;
// common part of all ctors
void Init();
- // SetSelection() with additional parameter telling it whether to send a
- // notification event or not
- void DoSetSelection(int selection, bool sendEvent = true);
+ // send the wxEVT_COMMAND_LISTBOX_SELECTED event
+ void SendSelectedEvent();
+
+ // common implementation of SelectAll() and DeselectAll()
+ bool DoSelectAll(bool select);
+
+ // change the current item (in single selection listbox it also implicitly
+ // changes the selection); current may be wxNOT_FOUND in which case there
+ // will be no current item any more
+ //
+ // return true if the current item changed, false otherwise
+ bool DoSetCurrent(int current);
+
+ // flags for DoHandleItemClick
+ enum
+ {
+ ItemClick_Shift = 1, // item shift-clicked
+ ItemClick_Ctrl = 2, // ctrl
+ ItemClick_Kbd = 4 // item selected from keyboard
+ };
+
+ // common part of keyboard and mouse handling processing code
+ void DoHandleItemClick(int item, int flags);
private:
- // the current selection or -1
- int m_selection;
+ // the current item or wxNOT_FOUND
+ //
+ // if m_selStore == NULL this is also the selected item, otherwise the
+ // selections are managed by m_selStore
+ int m_current;
+
+ // the anchor of the selection for the multiselection listboxes:
+ // shift-clicking an item extends the selection from m_anchor to the item
+ // clicked, for example
+ //
+ // always wxNOT_FOUND for single selection listboxes
+ int m_anchor;
+
+ // the object managing our selected items if not NULL
+ wxSelectionStore *m_selStore;
// margins
wxPoint m_ptMargins;
+ // the selection bg colour
+ wxColour m_colBgSel;
+
+ // double buffer
+ wxBitmap* m_doubleBuffer;
DECLARE_EVENT_TABLE()
+ DECLARE_NO_COPY_CLASS(wxVListBox)
+ DECLARE_ABSTRACT_CLASS(wxVListBox)
};
#endif // _WX_VLBOX_H_
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