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implemented multiple selection

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21040 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2003-06-11 11:40:37 +00:00
parent ae0f022346
commit be46555538
2 changed files with 412 additions and 85 deletions
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162
include/wx/vlbox.h
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@@ -14,6 +14,8 @@
#include "wx/vscroll.h" // base class
class WXDLLEXPORT wxSelectionStore;
#define wxVListBoxNameStr _T("wxVListBox")
// ----------------------------------------------------------------------------
@@ -43,52 +45,29 @@ public:
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);
// 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); }
// 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 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) { SetMargins(wxPoint(x, y)); }
// dtor does some internal cleanup (deletes m_selStore if any)
virtual ~wxVListBox();
// accessors
@@ -97,16 +76,110 @@ public:
// 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; }
// 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; }
// is this item selected?
bool IsSelected(size_t line) const { return (int)line == m_selection; }
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; }
// 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);
// 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
//
// 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 -1)
//
// 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
// distance between items
//
// by default both margins are 0
void SetMargins(const wxPoint& pt);
void SetMargins(wxCoord x, wxCoord y) { SetMargins(wxPoint(x, y)); }
protected:
// the derived class must implement this function to actually draw the item
// with the given index on the provided DC
@@ -141,18 +214,35 @@ protected:
// 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 -1 in which case there will be
// no current item any more
//
// return true if the current item changed, false otherwise
bool DoSetCurrent(int current);
// common part of keyboard and mouse handling processing code
void DoHandleItemClick(int item, bool shiftDown, bool ctrlDown);
private:
// the current selection or -1
int m_selection;
// the current item or -1
//
// if m_selStore == NULL this is also the selected item, otherwise the
// selections are managed by m_selStore
int m_current;
// the object managing our selected items if not NULL
wxSelectionStore *m_selStore;
// margins
wxPoint m_ptMargins;
DECLARE_EVENT_TABLE()
};