/////////////////////////////////////////////////////////////////////////////// // Name: wx/univ/listbox.h // Purpose: the universal listbox // Author: Vadim Zeitlin // Modified by: // Created: 30.08.00 // RCS-ID: $Id$ // Copyright: (c) 2000 Vadim Zeitlin // Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// #ifndef _WX_UNIV_LISTBOX_H_ #define _WX_UNIV_LISTBOX_H_ #ifdef __GNUG__ #pragma implementation "univlistbox.h" #endif #include "wx/scrolwin.h" // for wxScrollHelper // ---------------------------------------------------------------------------- // the actions supported by this control // ---------------------------------------------------------------------------- // change the current item #define wxACTION_LISTBOX_SETFOCUS _T("setfocus") // select the item #define wxACTION_LISTBOX_MOVEDOWN _T("down") // select item below #define wxACTION_LISTBOX_MOVEUP _T("up") // select item above #define wxACTION_LISTBOX_PAGEDOWN _T("pagedown") // go page down #define wxACTION_LISTBOX_PAGEUP _T("pageup") // go page up #define wxACTION_LISTBOX_START _T("start") // go to first item #define wxACTION_LISTBOX_END _T("end") // go to last item #define wxACTION_LISTBOX_FIND _T("find") // find item by 1st letter // do something with the current item #define wxACTION_LISTBOX_ACTIVATE _T("activate") // activate (choose) #define wxACTION_LISTBOX_TOGGLE _T("toggle") // togglee selected state #define wxACTION_LISTBOX_SELECT _T("select") // sel this, unsel others #define wxACTION_LISTBOX_SELECTADD _T("selectadd") // add to selection #define wxACTION_LISTBOX_UNSELECT _T("unselect") // unselect #define wxACTION_LISTBOX_ANCHOR _T("selanchor") // anchor selection // do something with the selection globally (not for single selection ones) #define wxACTION_LISTBOX_SELECTALL _T("selectall") // select all items #define wxACTION_LISTBOX_UNSELECTALL _T("unselectall") // unselect all items #define wxACTION_LISTBOX_SELTOGGLE _T("togglesel") // invert the selection #define wxACTION_LISTBOX_EXTENDSEL _T("extend") // extend to item // ---------------------------------------------------------------------------- // wxListBox: a list of selectable items // ---------------------------------------------------------------------------- class wxListBox : public wxListBoxBase, public wxScrollHelper { public: // ctors and such wxListBox() { Init(); } wxListBox(wxWindow *parent, wxWindowID id, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, int n = 0, const wxString choices[] = (const wxString *) NULL, long style = 0, const wxValidator& validator = wxDefaultValidator, const wxString& name = wxListBoxNameStr ) { Init(); Create(parent, id, pos, size, n, choices, style, validator, name); } virtual ~wxListBox(); bool Create(wxWindow *parent, wxWindowID id, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, int n = 0, const wxString choices[] = (const wxString *) NULL, long style = 0, const wxValidator& validator = wxDefaultValidator, const wxString& name = wxListBoxNameStr); // implement the listbox interface defined by wxListBoxBase virtual void Clear(); virtual void Delete(int n); virtual int GetCount() const { return (int)m_strings.GetCount(); } virtual wxString GetString(int n) const { return m_strings[n]; } virtual void SetString(int n, const wxString& s); virtual int FindString(const wxString& s) const { return m_strings.Index(s); } virtual bool IsSelected(int n) const { return m_selections.Index(n) != wxNOT_FOUND; } virtual void SetSelection(int n, bool select = TRUE); virtual int GetSelection() const; virtual int GetSelections(wxArrayInt& aSelections) const; protected: virtual int DoAppend(const wxString& item); virtual void DoInsertItems(const wxArrayString& items, int pos); virtual void DoSetItems(const wxArrayString& items, void **clientData); virtual void DoSetFirstItem(int n); virtual void DoSetItemClientData(int n, void* clientData); virtual void* DoGetItemClientData(int n) const; virtual void DoSetItemClientObject(int n, wxClientData* clientData); virtual wxClientData* DoGetItemClientObject(int n) const; public: // override some more base class methods virtual bool SetFont(const wxFont& font); // the wxUniversal-specific methods // -------------------------------- // the current item is the same as the selected one for wxLB_SINGLE // listboxes but for the other ones it is just the focused item which may // be selected or not int GetCurrentItem() const { return m_current; } void SetCurrentItem(int n); // select the item which is diff items below the current one void ChangeCurrent(int diff); // activate (i.e. send a LISTBOX_DOUBLECLICKED message) the specified or // current (if -1) item void Activate(int item = -1); // select or unselect the specified or current (if -1) item void Select(bool sel = TRUE, int item = -1); // more readable wrapper void Unselect(int item) { Select(FALSE, item); } // select an item and send a notification about it void SelectAndNotify(int item); // ensure that the given item is visible by scrolling it into view virtual void EnsureVisible(int n); // find the first item [strictly] after the current one which starts with // the given string and make it the current one, return TRUE if the current // item changed bool FindItem(const wxString& prefix, bool strictlyAfter = FALSE); bool FindNextItem(const wxString& prefix) { return FindItem(prefix, TRUE); } // extend the selection to span the range from the anchor (see below) to // the specified or current item void ExtendSelection(int itemTo = -1); // make this item the new selection anchor: extending selection with // ExtendSelection() will work with it void AnchorSelection(int itemFrom) { m_selAnchor = itemFrom; } // get, calculating it if necessary, the number of items per page, the // height of each line and the max width of an item int GetItemsPerPage() const; wxCoord GetLineHeight() const; wxCoord GetMaxWidth() const; // override the wxControl virtual methods virtual bool PerformAction(const wxControlAction& action, long numArg = 0l, const wxString& strArg = wxEmptyString); // let wxColourScheme choose the right colours for us virtual bool IsContainerWindow() const { return TRUE; } protected: // geometry virtual wxSize DoGetBestClientSize() const; virtual void DoSetSize(int x, int y, int width, int height, int sizeFlags = wxSIZE_AUTO); virtual void DoDraw(wxControlRenderer *renderer); virtual wxBorder GetDefaultBorder() const; // common part of all ctors void Init(); // event handlers void OnIdle(wxIdleEvent& event); void OnSize(wxSizeEvent& event); // common part of Clear() and DoSetItems(): clears everything virtual void DoClear(); // refresh the given item(s) or everything void RefreshItems(int from, int count); void RefreshItem(int n); void RefreshFromItemToEnd(int n); void RefreshAll(); // send an event of the given type (using m_current by default) bool SendEvent(wxEventType type, int item = -1); // calculate the number of items per page using our current size void CalcItemsPerPage(); // can/should we have a horz scrollbar? bool HasHorzScrollbar() const { return (m_windowStyle & wxLB_HSCROLL) != 0; } // redraw the items in the given range only: called from DoDraw() virtual void DoDrawRange(wxControlRenderer *renderer, int itemFirst, int itemLast); // update the scrollbars and then ensure that the item is visible void DoEnsureVisible(int n); // mark horz scrollbar for updating void RefreshHorzScrollbar(); // update (show/hide/adjust) the scrollbars void UpdateScrollbars(); // refresh the items specified by m_updateCount and m_updateFrom void UpdateItems(); // the array containing all items (it is sorted if the listbox has // wxLB_SORT style) wxArrayString m_strings; // this array contains the indices of the selected items (for the single // selection listboxes only the first element of it is used and contains // the current selection) wxArrayInt m_selections; // and this one the client data (either void or wxClientData) wxArrayPtrVoid m_itemsClientData; // the current item int m_current; private: // the range of elements which must be updated: if m_updateCount is 0 no // update is needed, if it is -1 everything must be updated, otherwise // m_updateCount items starting from m_updateFrom have to be redrawn int m_updateFrom, m_updateCount; // the height of one line in the listbox (all lines have the same height) wxCoord m_lineHeight; // the maximal width of a listbox item and the item which has it wxCoord m_maxWidth; int m_maxWidthItem; // the extents of horz and vert scrollbars int m_scrollRangeX, m_scrollRangeY; // the number of items per page size_t m_itemsPerPage; // if the number of items has changed we may need to show/hide the // scrollbar bool m_updateScrollbarX, m_updateScrollbarY, m_showScrollbarX, m_showScrollbarY; // if the current item has changed, we might need to scroll if it went out // of the window bool m_currentChanged; // the anchor from which the selection is extended for the listboxes with // wxLB_EXTENDED style - this is set to the last item which was selected // by not extending the selection but by choosing it directly int m_selAnchor; DECLARE_EVENT_TABLE() DECLARE_DYNAMIC_CLASS(wxListBox) }; // ---------------------------------------------------------------------------- // wxStdListboxInputHandler: handles mouse and kbd in a single or multi // selection listbox // ---------------------------------------------------------------------------- class WXDLLEXPORT wxStdListboxInputHandler : public wxStdInputHandler { public: // if pressing the mouse button in a multiselection listbox should toggle // the item under mouse immediately, then specify TRUE as the second // parameter (this is the standard behaviour, under GTK the item is toggled // only when the mouse is released in the multi selection listbox) wxStdListboxInputHandler(wxInputHandler *inphand, bool toggleOnPressAlways = TRUE); // base class methods virtual bool HandleKey(wxInputConsumer *consumer, const wxKeyEvent& event, bool pressed); virtual bool HandleMouse(wxInputConsumer *consumer, const wxMouseEvent& event); virtual bool HandleMouseMove(wxInputConsumer *consumer, const wxMouseEvent& event); protected: // return the item under mouse, 0 if the mouse is above the listbox or // GetCount() if it is below it int HitTest(const wxListBox *listbox, const wxMouseEvent& event); // parts of HitTest(): first finds the pseudo (because not in range) index // of the item and the second one adjusts it if necessary - that is if the // third one returns FALSE int HitTestUnsafe(const wxListBox *listbox, const wxMouseEvent& event); int FixItemIndex(const wxListBox *listbox, int item); bool IsValidIndex(const wxListBox *listbox, int item); // init m_btnCapture and m_actionMouse wxControlAction SetupCapture(wxListBox *lbox, const wxMouseEvent& event, int item); wxRenderer *m_renderer; // the button which initiated the mouse capture (currently 0 or 1) int m_btnCapture; // the action to perform when the mouse moves while we capture it wxControlAction m_actionMouse; // the ctor parameter toggleOnPressAlways (see comments near it) bool m_toggleOnPressAlways; // do we track the mouse outside the window when it is captured? bool m_trackMouseOutside; }; #endif // _WX_UNIV_LISTBOX_H_