[wxWidgets.git] / include / wx / os2 / treectrl.h

/////////////////////////////////////////////////////////////////////////////
// Name:        wx/os2/treectrl.h
// Purpose:     wxTreeCtrl class
// Author:      David Webster
// Modified by:
// Created:     01/23/03
// RCS-ID:      $Id$
// Copyright:   (c) David Webster
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_TREECTRL_H_
#define _WX_TREECTRL_H_

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#if wxUSE_TREECTRL

#include "wx/textctrl.h"
#include "wx/dynarray.h"
#include "wx/treebase.h"
#include "wx/hashmap.h"

// the type for "untyped" data
typedef long wxDataType;

// fwd decl
class  WXDLLEXPORT wxImageList;
class  WXDLLEXPORT wxDragImage;
struct WXDLLIMPEXP_FWD_CORE wxTreeViewItem;

// a callback function used for sorting tree items, it should return -1 if the
// first item precedes the second, +1 if the second precedes the first or 0 if
// they're equivalent
class wxTreeItemData;

#if WXWIN_COMPATIBILITY_2_6
    // flags for deprecated InsertItem() variant
    #define wxTREE_INSERT_FIRST 0xFFFF0001
    #define wxTREE_INSERT_LAST  0xFFFF0002
#endif

// hash storing attributes for our items
WX_DECLARE_EXPORTED_VOIDPTR_HASH_MAP(wxTreeItemAttr *, wxMapTreeAttr);

// ----------------------------------------------------------------------------
// wxTreeCtrl
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxTreeCtrl : public wxControl
{
public:
    // creation
    // --------
    wxTreeCtrl() { Init(); }

    wxTreeCtrl( wxWindow*          pParent
               ,wxWindowID         vId = wxID_ANY
               ,const wxPoint&     rPos = wxDefaultPosition
               ,const wxSize&      rSize = wxDefaultSize
               ,long               lStyle = wxTR_HAS_BUTTONS | wxTR_LINES_AT_ROOT
               ,const wxValidator& rValidator = wxDefaultValidator
               ,const wxString&    rsName = wxTreeCtrlNameStr
              )
    {
        Create( pParent
               ,vId
               ,rPos
               ,rSize
               ,lStyle
               ,rValidator
               ,rsName
              );
    }
    virtual ~wxTreeCtrl();

    bool Create( wxWindow*          pParent
                ,wxWindowID         vId = wxID_ANY
                ,const wxPoint&     rPos = wxDefaultPosition
                ,const wxSize&      rSize = wxDefaultSize
                ,long               lStyle = wxTR_HAS_BUTTONS | wxTR_LINES_AT_ROOT
                ,const wxValidator& rValidator = wxDefaultValidator
                ,const wxString&    rsName = wxTreeCtrlNameStr
               );

    //
    // Accessors
    // ---------
    //

    //
    // Get the total number of items in the control
    //
    virtual unsigned int GetCount(void) const;

    //
    // Indent is the number of pixels the children are indented relative to
    // the parents position. SetIndent() also redraws the control
    // immediately.
    //
    unsigned int GetIndent(void) const;
    void         SetIndent(unsigned int uIndent);

    //
    // Spacing is the number of pixels between the start and the Text
    //
    unsigned int GetSpacing(void) const { return 18; } // return wxGTK default
    void SetSpacing(unsigned int uSpacing) { }

    //
    // Image list: these functions allow to associate an image list with
    // the control and retrieve it. Note that the control does _not_ delete
    // the associated image list when it's deleted in order to allow image
    // lists to be shared between different controls.
    //
    // OS/2 doesn't really use imagelists as MSW does, but since the MSW
    // control is the basis for this one, until I decide how to get rid of
    // the need for them they are here for now.
    //
    wxImageList* GetImageList(void) const;
    wxImageList* GetStateImageList(void) const;

    void         AssignImageList(wxImageList* pImageList);
    void         AssignStateImageList(wxImageList* pImageList);
    void         SetImageList(wxImageList* pImageList);
    void         SetStateImageList(wxImageList* pImageList);

    //
    // Functions to work with tree ctrl items. Unfortunately, they can _not_ be
    // member functions of wxTreeItem because they must know the tree the item
    // belongs to for Windows implementation and storing the pointer to
    // wxTreeCtrl in each wxTreeItem is just too much waste.

    //
    // Item's label
    //
    wxString GetItemText(const wxTreeItemId& rItem) const;
    void     SetItemText( const wxTreeItemId& rItem
                         ,const wxString&     rsText
                        );

    //
    // One of the images associated with the item (normal by default)
    //
    int  GetItemImage( const wxTreeItemId& rItem
                      ,wxTreeItemIcon      vWhich = wxTreeItemIcon_Normal
                     ) const;
    void SetItemImage( const wxTreeItemId& rItem
                      ,int                 nImage
                      ,wxTreeItemIcon      vWhich = wxTreeItemIcon_Normal
                     );

    //
    // Data associated with the item
    //
    wxTreeItemData* GetItemData(const wxTreeItemId& rItem) const;
    void            SetItemData( const wxTreeItemId& rItem
                                ,wxTreeItemData*     pData
                               );

    //
    // Item's text colour
    //
    wxColour GetItemTextColour(const wxTreeItemId& rItem) const;
    void     SetItemTextColour( const wxTreeItemId& rItem
                               ,const wxColour&     rColor
                              );

    //
    // Item's background colour
    //
    wxColour GetItemBackgroundColour(const wxTreeItemId& rItem) const;
    void     SetItemBackgroundColour( const wxTreeItemId& rItem
                                     ,const wxColour&     rColour
                                    );

    //
    // Item's font
    //
    wxFont GetItemFont(const wxTreeItemId& rItem) const;
    void   SetItemFont( const wxTreeItemId& rItem
                       ,const wxFont&       rFont
                      );

    //
    // Force appearance of [+] button near the item. This is useful to
    // allow the user to expand the items which don't have any children now
    // - but instead add them only when needed, thus minimizing memory
    // usage and loading time.
    //
    void SetItemHasChildren( const wxTreeItemId& rItem
                            ,bool                bHas = true
                           );

    //
    // The item will be shown in bold
    //
    void SetItemBold( const wxTreeItemId& rItem
                     ,bool                bBold = true
                    );

    //
    // The item will be shown with a drop highlight
    //
    void SetItemDropHighlight( const wxTreeItemId& rItem
                              ,bool                bHighlight = true
                             );

    //
    // Item status inquiries
    // ---------------------
    //

    //
    // Is the item visible (it might be outside the view or not expanded)?
    //
    bool IsVisible(const wxTreeItemId& rItem) const;

    //
    // Does the item has any children?
    //
    bool ItemHasChildren(const wxTreeItemId& rItem) const;

    //
    // Is the item expanded (only makes sense if HasChildren())?
    //
    bool IsExpanded(const wxTreeItemId& rItem) const;

    //
    // Is this item currently selected (the same as has focus)?
    //
    bool IsSelected(const wxTreeItemId& rItem) const;

    //
    // Is item text in bold font?
    //
    bool IsBold(const wxTreeItemId& rItem) const;

    //
    // Number of children
    // ------------------
    //

    //
    // If 'bRecursively' is false, only immediate children count, otherwise
    // the returned number is the number of all items in this branch
    //
    size_t GetChildrenCount( const wxTreeItemId& rItem
                            ,bool                bRecursively = true
                           ) const;

    //
    // Navigation
    // ----------
    //

    //
    // Get the root tree item
    //
    wxTreeItemId GetRootItem(void) const;

    //
    // Get the item currently selected (may return NULL if no selection)
    //
    wxTreeItemId GetSelection(void) const;

    //
    // Get the items currently selected, return the number of such item
    //
    size_t GetSelections(wxArrayTreeItemIds& rSelections) const;

    //
    // Get the parent of this item (may return NULL if root)
    //
    wxTreeItemId GetItemParent(const wxTreeItemId& rItem) const;

        // for this enumeration function you must pass in a "cookie" parameter
        // which is opaque for the application but is necessary for the library
        // to make these functions reentrant (i.e. allow more than one
        // enumeration on one and the same object simultaneously). Of course,
        // the "cookie" passed to GetFirstChild() and GetNextChild() should be
        // the same!

        // get the first child of this item
    wxTreeItemId GetFirstChild(const wxTreeItemId& item,
                               wxTreeItemIdValue& cookie) const;
        // get the next child
    wxTreeItemId GetNextChild(const wxTreeItemId& item,
                              wxTreeItemIdValue& cookie) const;

    //
    // Get the last child of this item - this method doesn't use cookies
    //
    wxTreeItemId GetLastChild(const wxTreeItemId& rItem) const;

    //
    // Get the next sibling of this item
    //
    wxTreeItemId GetNextSibling(const wxTreeItemId& rItem) const;

    //
    // Get the previous sibling
    //
    wxTreeItemId GetPrevSibling(const wxTreeItemId& rItem) const;

    //
    // Get first visible item
    //
    wxTreeItemId GetFirstVisibleItem(void) const;

    //
    // Get the next visible item: item must be visible itself!
    // see IsVisible() and wxTreeCtrl::GetFirstVisibleItem()
    //
    wxTreeItemId GetNextVisible(const wxTreeItemId& rItem) const;

    //
    // Get the previous visible item: item must be visible itself!
    //
    wxTreeItemId GetPrevVisible(const wxTreeItemId& rItem) const;

    //
    // Operations
    // ----------
    //

    //
    // Add the root node to the tree
    //
    wxTreeItemId AddRoot( const wxString& rsText
                         ,int             nImage = -1
                         ,int             nSelectedImage = -1
                         ,wxTreeItemData* pData = NULL
                        );

    //
    // Insert a new item in as the first child of the parent
    //
    wxTreeItemId PrependItem( const wxTreeItemId& rParent
                             ,const wxString&     rsText
                             ,int                 nImage = -1
                             ,int                 nSelectedImage = -1
                             ,wxTreeItemData*     pData = NULL
                            );

    //
    // Insert a new item after a given one
    //
    wxTreeItemId InsertItem( const wxTreeItemId& rParent
                            ,const wxTreeItemId& rIdPrevious
                            ,const wxString&     rsText
                            ,int                 nImage = -1
                            ,int                 nSelectedImage = -1
                            ,wxTreeItemData*     pData = NULL
                           );

    //
    // Insert a new item before the one with the given index
    //
    wxTreeItemId InsertItem( const wxTreeItemId& pParent
                            ,size_t              nIndex
                            ,const wxString&     rsText
                            ,int                 nImage = -1
                            ,int                 nSelectedImage = -1
                            ,wxTreeItemData*     pData = NULL
                           );

    //
    // Insert a new item in as the last child of the parent
    //
    wxTreeItemId AppendItem( const wxTreeItemId& rParent
                            ,const wxString&     rsText
                            ,int                 nImage = -1
                            ,int                 nSelectedImage = -1
                            ,wxTreeItemData*     pData = NULL
                           );

    //
    // Delete this item and associated data if any
    //
    void Delete(const wxTreeItemId& rItem);

    //
    // Delete all children (but don't delete the item itself)
    //
    void DeleteChildren(const wxTreeItemId& rItem);

    //
    // Delete all items from the tree
    //
    void DeleteAllItems(void);

    //
    // Expand this item
    //
    void Expand(const wxTreeItemId& rItem);

    //
    // Collapse the item without removing its children
    //
    void Collapse(const wxTreeItemId& rItem);

    //
    // Collapse the item and remove all children
    //
    void CollapseAndReset(const wxTreeItemId& rItem);

    //
    // Toggles the current state
    //
    void Toggle(const wxTreeItemId& rItem);

    //
    // Remove the selection from currently selected item (if any)
    //
    void Unselect(void);

    //
    // Unselect all items (only makes sense for multiple selection control)
    //
    void UnselectAll(void);

    //
    // Select this item
    //
    void SelectItem(const wxTreeItemId& rItem);

    //
    // Make sure this item is visible (expanding the parent item and/or
    // scrolling to this item if necessary)
    //
    void EnsureVisible(const wxTreeItemId& rItem);

    //
    // Scroll to this item (but don't expand its parent)
    //
    void ScrollTo(const wxTreeItemId& rItem);

    //
    // OS/2 does not use a separate edit field for editting text. Here for
    // interface compatibility, only.
    //
    wxTextCtrl* EditLabel( const wxTreeItemId& rItem
                          ,wxClassInfo*        pTextCtrlClass = CLASSINFO(wxTextCtrl)
                         );

    //
    // returns NULL for OS/2 in ALL cases
    //
    wxTextCtrl* GetEditControl(void) const {return (wxTextCtrl*)NULL;}

    //
    // End editing and accept or discard the changes to item label
    //
    void EndEditLabel( const wxTreeItemId& rItem
                      ,bool                bDiscardChanges = false
                     );

    //
    // Sorting
    // -------
    //

    //
    // This function is called to compare 2 items and should return -1, 0
    // or +1 if the first item is less than, equal to or greater than the
    // second one. The base class version performs alphabetic comparaison
    // of item labels (GetText)
    //
    virtual int OnCompareItems( const wxTreeItemId& rItem1
                               ,const wxTreeItemId& rItem2
                              );

    //
    // Sort the children of this item using OnCompareItems
    //
    void SortChildren(const wxTreeItemId& rItem);

    //
    // Helpers
    // -------
    //

    //
    // Determine to which item (if any) belongs the given point (the
    // coordinates specified are relative to the client area of tree ctrl)
    // and fill the flags parameter with a bitmask of wxTREE_HITTEST_xxx
    // constants.

    //
    // The first function is more portable (because easier to implement
    // on other platforms), but the second one returns some extra info.
    //
    wxTreeItemId HitTest(const wxPoint& rPoint)
        { int nDummy = 0; return HitTest(rPoint, nDummy); }
    wxTreeItemId HitTest( const wxPoint& rPoint
                         ,int&           rFlags
                        );

    //
    // Get the bounding rectangle of the item (or of its label only)
    //
    bool GetBoundingRect( const wxTreeItemId& rItem
                         ,wxRect&             rRect
                         ,bool                bTextOnly = false
                        ) const;

    //
    // Implementation
    // --------------
    //

    virtual MRESULT OS2WindowProc( WXUINT   uMsg
                                  ,WXWPARAM wParam
                                  ,WXLPARAM lParam
                                 );
    virtual bool    OS2Command( WXUINT uParam
                               ,WXWORD wId
                              );
//    virtual bool    OMSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);

    //
    // Override some base class virtuals
    //
    virtual bool SetBackgroundColour(const wxColour& rColour);
    virtual bool SetForegroundColour(const wxColour& rColour);

    //
    // Get/set the check state for the item (only for wxTR_MULTIPLE)
    //
    bool IsItemChecked(const wxTreeItemId& rItem) const;
    void SetItemCheck( const wxTreeItemId& rItem
                      ,bool                bCheck = true
                     );

protected:
    //
    // SetImageList helper
    //
    void SetAnyImageList( wxImageList* pImageList
                         ,int          nWhich
                        );

    //
    // Refresh a single item
    //
    void RefreshItem(const wxTreeItemId& rItem);

    wxImageList*                    m_pImageListNormal; // images for tree elements
    wxImageList*                    m_pImageListState;  // special images for app defined states
    bool                            m_bOwnsImageListNormal;
    bool                            m_bOwnsImageListState;

private:

    //
    // The common part of all ctors
    //
    void Init(void);

    //
    // Helper functions
    //
    inline bool DoGetItem(wxTreeViewItem* pTvItem) const;
    inline void DoSetItem(wxTreeViewItem* pTvItem);

    inline void DoExpand( const wxTreeItemId& rItem
                         ,int                 nFlag
                        );
    wxTreeItemId DoInsertItem( const wxTreeItemId& pParent
                              ,wxTreeItemId        hInsertAfter
                              ,const wxString&     rsText
                              ,int                 nImage
                              ,int                 nSelectedImage
                              ,wxTreeItemData*     pData
                             );
    int  DoGetItemImageFromData( const wxTreeItemId& rItem
                                ,wxTreeItemIcon      vWhich
                               ) const;
    void DoSetItemImageFromData( const wxTreeItemId& rItem
                                ,int                 nImage
                                ,wxTreeItemIcon      vWhich
                               ) const;
    void DoSetItemImages( const wxTreeItemId& rItem
                         ,int                 nImage
                         ,int                 nImageSel
                        );
    void DeleteTextCtrl() { };

    //
    // support for additional item images which we implement using
    // wxTreeItemIndirectData technique - see the comments in msw/treectrl.cpp
    //
    void SetIndirectItemData( const wxTreeItemId&           rItem
                             ,class wxTreeItemIndirectData* pData
                            );
    bool HasIndirectData(const wxTreeItemId& rItem) const;
    bool IsDataIndirect(wxTreeItemData* pData) const
        { return pData && pData->GetId().m_pItem == 0; }

    //
    // The hash storing the items attributes (indexed by items ids)
    //
    wxMapTreeAttr                   m_vAttrs;

    //
    // true if the hash above is not empty
    //
    bool                            m_bHasAnyAttr;

    //
    // Used for dragging
    //
    wxDragImage*                    m_pDragImage;

    // Virtual root item, if wxTR_HIDE_ROOT is set.
//    void* m_pVirtualRoot;

    // the starting item for selection with Shift
//    WXHTREEITEM m_htSelStart;
//
    friend class wxTreeItemIndirectData;
    friend class wxTreeSortHelper;

    DECLARE_DYNAMIC_CLASS(wxTreeCtrl)
    DECLARE_NO_COPY_CLASS(wxTreeCtrl)
}; // end of CLASS wxTreeCtrl

#endif // wxUSE_TREECTRL

#endif
    // _WX_TREECTRL_H_
Commit	Line	Data
4fd899b6 DW	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: wx/os2/treectrl.h
	3	// Purpose: wxTreeCtrl class
	4	// Author: David Webster
	5	// Modified by:
	6	// Created: 01/23/03
	7	// RCS-ID: $Id$
	8	// Copyright: (c) David Webster
65571936	9	// Licence: wxWindows licence
4fd899b6 DW	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#ifndef _WX_TREECTRL_H_
	13	#define _WX_TREECTRL_H_
	14
	15	// ----------------------------------------------------------------------------
	16	// headers
	17	// ----------------------------------------------------------------------------
	18
4fd899b6 DW	19	#if wxUSE_TREECTRL
	20
	21	#include "wx/textctrl.h"
	22	#include "wx/dynarray.h"
	23	#include "wx/treebase.h"
258836fa	24	#include "wx/hashmap.h"
4fd899b6 DW	25
	26	// the type for "untyped" data
	27	typedef long wxDataType;
	28
	29	// fwd decl
	30	class WXDLLEXPORT wxImageList;
	31	class WXDLLEXPORT wxDragImage;
b5dbe15d	32	struct WXDLLIMPEXP_FWD_CORE wxTreeViewItem;
4fd899b6 DW	33
	34	// a callback function used for sorting tree items, it should return -1 if the
	35	// first item precedes the second, +1 if the second precedes the first or 0 if
	36	// they're equivalent
	37	class wxTreeItemData;
	38
989ab1e5 WS	39	#if WXWIN_COMPATIBILITY_2_6
	40	// flags for deprecated InsertItem() variant
	41	#define wxTREE_INSERT_FIRST 0xFFFF0001
	42	#define wxTREE_INSERT_LAST 0xFFFF0002
	43	#endif
4fd899b6	44
258836fa SN	45	// hash storing attributes for our items
	46	WX_DECLARE_EXPORTED_VOIDPTR_HASH_MAP(wxTreeItemAttr *, wxMapTreeAttr);
	47
4fd899b6 DW	48	// ----------------------------------------------------------------------------
	49	// wxTreeCtrl
	50	// ----------------------------------------------------------------------------
	51	class WXDLLEXPORT wxTreeCtrl : public wxControl
	52	{
	53	public:
	54	// creation
	55	// --------
	56	wxTreeCtrl() { Init(); }
	57
	58	wxTreeCtrl( wxWindow* pParent
e2effeb9	59	,wxWindowID vId = wxID_ANY
4fd899b6 DW	60	,const wxPoint& rPos = wxDefaultPosition
	61	,const wxSize& rSize = wxDefaultSize
	62	,long lStyle = wxTR_HAS_BUTTONS \| wxTR_LINES_AT_ROOT
	63	,const wxValidator& rValidator = wxDefaultValidator
	64	,const wxString& rsName = wxTreeCtrlNameStr
	65	)
	66	{
	67	Create( pParent
	68	,vId
	69	,rPos
	70	,rSize
	71	,lStyle
	72	,rValidator
	73	,rsName
	74	);
	75	}
	76	virtual ~wxTreeCtrl();
	77
	78	bool Create( wxWindow* pParent
e2effeb9	79	,wxWindowID vId = wxID_ANY
4fd899b6 DW	80	,const wxPoint& rPos = wxDefaultPosition
	81	,const wxSize& rSize = wxDefaultSize
	82	,long lStyle = wxTR_HAS_BUTTONS \| wxTR_LINES_AT_ROOT
	83	,const wxValidator& rValidator = wxDefaultValidator
	84	,const wxString& rsName = wxTreeCtrlNameStr
	85	);
	86
	87	//
	88	// Accessors
	89	// ---------
	90	//
	91
	92	//
	93	// Get the total number of items in the control
	94	//
027d45e8	95	virtual unsigned int GetCount(void) const;
4fd899b6 DW	96
	97	//
	98	// Indent is the number of pixels the children are indented relative to
	99	// the parents position. SetIndent() also redraws the control
	100	// immediately.
	101	//
	102	unsigned int GetIndent(void) const;
	103	void SetIndent(unsigned int uIndent);
	104
	105	//
	106	// Spacing is the number of pixels between the start and the Text
	107	//
	108	unsigned int GetSpacing(void) const { return 18; } // return wxGTK default
	109	void SetSpacing(unsigned int uSpacing) { }
	110
	111	//
	112	// Image list: these functions allow to associate an image list with
	113	// the control and retrieve it. Note that the control does _not_ delete
	114	// the associated image list when it's deleted in order to allow image
	115	// lists to be shared between different controls.
	116	//
	117	// OS/2 doesn't really use imagelists as MSW does, but since the MSW
	118	// control is the basis for this one, until I decide how to get rid of
	119	// the need for them they are here for now.
	120	//
	121	wxImageList* GetImageList(void) const;
	122	wxImageList* GetStateImageList(void) const;
	123
	124	void AssignImageList(wxImageList* pImageList);
	125	void AssignStateImageList(wxImageList* pImageList);
	126	void SetImageList(wxImageList* pImageList);
	127	void SetStateImageList(wxImageList* pImageList);
	128
	129	//
	130	// Functions to work with tree ctrl items. Unfortunately, they can _not_ be
	131	// member functions of wxTreeItem because they must know the tree the item
	132	// belongs to for Windows implementation and storing the pointer to
	133	// wxTreeCtrl in each wxTreeItem is just too much waste.
	134
	135	//
	136	// Item's label
	137	//
	138	wxString GetItemText(const wxTreeItemId& rItem) const;
	139	void SetItemText( const wxTreeItemId& rItem
	140	,const wxString& rsText
	141	);
	142
	143	//
	144	// One of the images associated with the item (normal by default)
	145	//
	146	int GetItemImage( const wxTreeItemId& rItem
	147	,wxTreeItemIcon vWhich = wxTreeItemIcon_Normal
	148	) const;
	149	void SetItemImage( const wxTreeItemId& rItem
	150	,int nImage
	151	,wxTreeItemIcon vWhich = wxTreeItemIcon_Normal
	152	);
	153
	154	//
	155	// Data associated with the item
	156	//
	157	wxTreeItemData* GetItemData(const wxTreeItemId& rItem) const;
	158	void SetItemData( const wxTreeItemId& rItem
	159	,wxTreeItemData* pData
160	);
161
162	//
163	// Item's text colour
164	//
165	wxColour GetItemTextColour(const wxTreeItemId& rItem) const;
166	void SetItemTextColour( const wxTreeItemId& rItem
167	,const wxColour& rColor
168	);
169
170	//
171	// Item's background colour
172	//
173	wxColour GetItemBackgroundColour(const wxTreeItemId& rItem) const;
174	void SetItemBackgroundColour( const wxTreeItemId& rItem
175	,const wxColour& rColour
176	);
177
178	//
179	// Item's font
180	//
181	wxFont GetItemFont(const wxTreeItemId& rItem) const;
182	void SetItemFont( const wxTreeItemId& rItem
183	,const wxFont& rFont
184	);
185
186	//
187	// Force appearance of [+] button near the item. This is useful to
188	// allow the user to expand the items which don't have any children now
189	// - but instead add them only when needed, thus minimizing memory
190	// usage and loading time.
191	//
192	void SetItemHasChildren( const wxTreeItemId& rItem
1729813a	193	,bool bHas = true
4fd899b6 DW	194	);
	195
	196	//
	197	// The item will be shown in bold
	198	//
	199	void SetItemBold( const wxTreeItemId& rItem
1729813a	200	,bool bBold = true
4fd899b6 DW	201	);
	202
	203	//
	204	// The item will be shown with a drop highlight
	205	//
	206	void SetItemDropHighlight( const wxTreeItemId& rItem
1729813a	207	,bool bHighlight = true
4fd899b6 DW	208	);
	209
	210	//
	211	// Item status inquiries
	212	// ---------------------
	213	//
	214
	215	//
	216	// Is the item visible (it might be outside the view or not expanded)?
	217	//
	218	bool IsVisible(const wxTreeItemId& rItem) const;
	219
	220	//
	221	// Does the item has any children?
	222	//
	223	bool ItemHasChildren(const wxTreeItemId& rItem) const;
	224
	225	//
	226	// Is the item expanded (only makes sense if HasChildren())?
	227	//
	228	bool IsExpanded(const wxTreeItemId& rItem) const;
	229
	230	//
	231	// Is this item currently selected (the same as has focus)?
	232	//
	233	bool IsSelected(const wxTreeItemId& rItem) const;
	234
	235	//
	236	// Is item text in bold font?
	237	//
	238	bool IsBold(const wxTreeItemId& rItem) const;
	239
	240	//
	241	// Number of children
	242	// ------------------
	243	//
	244
	245	//
1729813a	246	// If 'bRecursively' is false, only immediate children count, otherwise
4fd899b6 DW	247	// the returned number is the number of all items in this branch
	248	//
	249	size_t GetChildrenCount( const wxTreeItemId& rItem
1729813a	250	,bool bRecursively = true
4fd899b6 DW	251	) const;
	252
	253	//
	254	// Navigation
	255	// ----------
	256	//
	257
	258	//
	259	// Get the root tree item
	260	//
	261	wxTreeItemId GetRootItem(void) const;
	262
	263	//
	264	// Get the item currently selected (may return NULL if no selection)
	265	//
	266	wxTreeItemId GetSelection(void) const;
	267
	268	//
	269	// Get the items currently selected, return the number of such item
	270	//
	271	size_t GetSelections(wxArrayTreeItemIds& rSelections) const;
	272
	273	//
	274	// Get the parent of this item (may return NULL if root)
	275	//
	276	wxTreeItemId GetItemParent(const wxTreeItemId& rItem) const;
	277
258836fa SN	278	// for this enumeration function you must pass in a "cookie" parameter
	279	// which is opaque for the application but is necessary for the library
	280	// to make these functions reentrant (i.e. allow more than one
	281	// enumeration on one and the same object simultaneously). Of course,
	282	// the "cookie" passed to GetFirstChild() and GetNextChild() should be
	283	// the same!
4fd899b6	284
258836fa SN	285	// get the first child of this item
	286	wxTreeItemId GetFirstChild(const wxTreeItemId& item,
	287	wxTreeItemIdValue& cookie) const;
	288	// get the next child
	289	wxTreeItemId GetNextChild(const wxTreeItemId& item,
	290	wxTreeItemIdValue& cookie) const;
4fd899b6 DW	291
	292	//
	293	// Get the last child of this item - this method doesn't use cookies
	294	//
	295	wxTreeItemId GetLastChild(const wxTreeItemId& rItem) const;
	296
	297	//
	298	// Get the next sibling of this item
	299	//
	300	wxTreeItemId GetNextSibling(const wxTreeItemId& rItem) const;
	301
	302	//
	303	// Get the previous sibling
	304	//
	305	wxTreeItemId GetPrevSibling(const wxTreeItemId& rItem) const;
	306
	307	//
	308	// Get first visible item
	309	//
	310	wxTreeItemId GetFirstVisibleItem(void) const;
	311
	312	//
	313	// Get the next visible item: item must be visible itself!
	314	// see IsVisible() and wxTreeCtrl::GetFirstVisibleItem()
	315	//
	316	wxTreeItemId GetNextVisible(const wxTreeItemId& rItem) const;
	317
	318	//
	319	// Get the previous visible item: item must be visible itself!
	320	//
	321	wxTreeItemId GetPrevVisible(const wxTreeItemId& rItem) const;
	322
	323	//
	324	// Operations
	325	// ----------
	326	//
	327
	328	//
	329	// Add the root node to the tree
	330	//
	331	wxTreeItemId AddRoot( const wxString& rsText
	332	,int nImage = -1
	333	,int nSelectedImage = -1
	334	,wxTreeItemData* pData = NULL
	335	);
	336
	337	//
	338	// Insert a new item in as the first child of the parent
	339	//
	340	wxTreeItemId PrependItem( const wxTreeItemId& rParent
	341	,const wxString& rsText
	342	,int nImage = -1
	343	,int nSelectedImage = -1
	344	,wxTreeItemData* pData = NULL
	345	);
	346
	347	//
	348	// Insert a new item after a given one
	349	//
	350	wxTreeItemId InsertItem( const wxTreeItemId& rParent
	351	,const wxTreeItemId& rIdPrevious
	352	,const wxString& rsText
	353	,int nImage = -1
	354	,int nSelectedImage = -1
355	,wxTreeItemData* pData = NULL
356	);
357
358	//
359	// Insert a new item before the one with the given index
360	//
361	wxTreeItemId InsertItem( const wxTreeItemId& pParent
362	,size_t nIndex
363	,const wxString& rsText
364	,int nImage = -1
365	,int nSelectedImage = -1
366	,wxTreeItemData* pData = NULL
367	);
368
369	//
370	// Insert a new item in as the last child of the parent
371	//
372	wxTreeItemId AppendItem( const wxTreeItemId& rParent
373	,const wxString& rsText
374	,int nImage = -1
375	,int nSelectedImage = -1
376	,wxTreeItemData* pData = NULL
377	);
378
379	//
380	// Delete this item and associated data if any
381	//
382	void Delete(const wxTreeItemId& rItem);
383
384	//
385	// Delete all children (but don't delete the item itself)
386	//
387	void DeleteChildren(const wxTreeItemId& rItem);
388
389	//
390	// Delete all items from the tree
391	//
392	void DeleteAllItems(void);
393
394	//
395	// Expand this item
396	//
397	void Expand(const wxTreeItemId& rItem);
398
399	//
400	// Collapse the item without removing its children
401	//
402	void Collapse(const wxTreeItemId& rItem);
403
404	//
405	// Collapse the item and remove all children
406	//
407	void CollapseAndReset(const wxTreeItemId& rItem);
408
409	//
410	// Toggles the current state
411	//
412	void Toggle(const wxTreeItemId& rItem);
413
414	//
415	// Remove the selection from currently selected item (if any)
416	//
417	void Unselect(void);
418
419	//
420	// Unselect all items (only makes sense for multiple selection control)
421	//
422	void UnselectAll(void);
423
424	//
425	// Select this item
426	//
427	void SelectItem(const wxTreeItemId& rItem);
428
429	//
430	// Make sure this item is visible (expanding the parent item and/or
431	// scrolling to this item if necessary)
432	//
433	void EnsureVisible(const wxTreeItemId& rItem);
434
435	//
436	// Scroll to this item (but don't expand its parent)
437	//
438	void ScrollTo(const wxTreeItemId& rItem);
439
440	//
441	// OS/2 does not use a separate edit field for editting text. Here for
442	// interface compatibility, only.
443	//
444	wxTextCtrl* EditLabel( const wxTreeItemId& rItem
445	,wxClassInfo* pTextCtrlClass = CLASSINFO(wxTextCtrl)
446	);
447
448	//
449	// returns NULL for OS/2 in ALL cases
450	//
451	wxTextCtrl* GetEditControl(void) const {return (wxTextCtrl*)NULL;}
452
453	//
454	// End editing and accept or discard the changes to item label
455	//
456	void EndEditLabel( const wxTreeItemId& rItem
1729813a	457	,bool bDiscardChanges = false
4fd899b6 DW	458	);
	459
	460	//
	461	// Sorting
	462	// -------
	463	//
	464
	465	//
	466	// This function is called to compare 2 items and should return -1, 0
	467	// or +1 if the first item is less than, equal to or greater than the
	468	// second one. The base class version performs alphabetic comparaison
	469	// of item labels (GetText)
	470	//
	471	virtual int OnCompareItems( const wxTreeItemId& rItem1
	472	,const wxTreeItemId& rItem2
	473	);
	474
	475	//
	476	// Sort the children of this item using OnCompareItems
	477	//
	478	void SortChildren(const wxTreeItemId& rItem);
	479
	480	//
	481	// Helpers
	482	// -------
	483	//
	484
	485	//
	486	// Determine to which item (if any) belongs the given point (the
	487	// coordinates specified are relative to the client area of tree ctrl)
	488	// and fill the flags parameter with a bitmask of wxTREE_HITTEST_xxx
	489	// constants.
	490
	491	//
	492	// The first function is more portable (because easier to implement
	493	// on other platforms), but the second one returns some extra info.
	494	//
	495	wxTreeItemId HitTest(const wxPoint& rPoint)
	496	{ int nDummy = 0; return HitTest(rPoint, nDummy); }
	497	wxTreeItemId HitTest( const wxPoint& rPoint
	498	,int& rFlags
	499	);
	500
	501	//
	502	// Get the bounding rectangle of the item (or of its label only)
	503	//
	504	bool GetBoundingRect( const wxTreeItemId& rItem
	505	,wxRect& rRect
1729813a	506	,bool bTextOnly = false
4fd899b6 DW	507	) const;
4fd899b6 DW	508
4fd899b6 DW	509	//
	510	// Implementation
	511	// --------------
	512	//
	513
	514	virtual MRESULT OS2WindowProc( WXUINT uMsg
	515	,WXWPARAM wParam
	516	,WXLPARAM lParam
	517	);
	518	virtual bool OS2Command( WXUINT uParam
	519	,WXWORD wId
	520	);
	521	// virtual bool OMSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
	522
	523	//
	524	// Override some base class virtuals
	525	//
	526	virtual bool SetBackgroundColour(const wxColour& rColour);
	527	virtual bool SetForegroundColour(const wxColour& rColour);
	528
	529	//
	530	// Get/set the check state for the item (only for wxTR_MULTIPLE)
	531	//
	532	bool IsItemChecked(const wxTreeItemId& rItem) const;
	533	void SetItemCheck( const wxTreeItemId& rItem
1729813a	534	,bool bCheck = true
4fd899b6 DW	535	);
	536
	537	protected:
	538	//
	539	// SetImageList helper
	540	//
	541	void SetAnyImageList( wxImageList* pImageList
	542	,int nWhich
	543	);
	544
	545	//
	546	// Refresh a single item
	547	//
	548	void RefreshItem(const wxTreeItemId& rItem);
	549
	550	wxImageList* m_pImageListNormal; // images for tree elements
	551	wxImageList* m_pImageListState; // special images for app defined states
	552	bool m_bOwnsImageListNormal;
	553	bool m_bOwnsImageListState;
	554
	555	private:
	556
	557	//
	558	// The common part of all ctors
	559	//
	560	void Init(void);
	561
	562	//
	563	// Helper functions
	564	//
	565	inline bool DoGetItem(wxTreeViewItem* pTvItem) const;
	566	inline void DoSetItem(wxTreeViewItem* pTvItem);
	567
	568	inline void DoExpand( const wxTreeItemId& rItem
	569	,int nFlag
	570	);
	571	wxTreeItemId DoInsertItem( const wxTreeItemId& pParent
	572	,wxTreeItemId hInsertAfter
	573	,const wxString& rsText
	574	,int nImage
	575	,int nSelectedImage
	576	,wxTreeItemData* pData
	577	);
	578	int DoGetItemImageFromData( const wxTreeItemId& rItem
	579	,wxTreeItemIcon vWhich
	580	) const;
	581	void DoSetItemImageFromData( const wxTreeItemId& rItem
	582	,int nImage
	583	,wxTreeItemIcon vWhich
	584	) const;
	585	void DoSetItemImages( const wxTreeItemId& rItem
	586	,int nImage
	587	,int nImageSel
	588	);
	589	void DeleteTextCtrl() { };
	590
	591	//
	592	// support for additional item images which we implement using
	593	// wxTreeItemIndirectData technique - see the comments in msw/treectrl.cpp
	594	//
	595	void SetIndirectItemData( const wxTreeItemId& rItem
	596	,class wxTreeItemIndirectData* pData
	597	);
	598	bool HasIndirectData(const wxTreeItemId& rItem) const;
599	bool IsDataIndirect(wxTreeItemData* pData) const
600	{ return pData && pData->GetId().m_pItem == 0; }
601
602	//
603	// The hash storing the items attributes (indexed by items ids)
604	//
258836fa	605	wxMapTreeAttr m_vAttrs;
4fd899b6 DW	606
4fd899b6 DW	607	//
1729813a	608	// true if the hash above is not empty
4fd899b6 DW	609	//
	610	bool m_bHasAnyAttr;
	611
	612	//
	613	// Used for dragging
	614	//
	615	wxDragImage* m_pDragImage;
	616
	617	// Virtual root item, if wxTR_HIDE_ROOT is set.
	618	// void* m_pVirtualRoot;
	619
	620	// the starting item for selection with Shift
	621	// WXHTREEITEM m_htSelStart;
	622	//
	623	friend class wxTreeItemIndirectData;
	624	friend class wxTreeSortHelper;
	625
	626	DECLARE_DYNAMIC_CLASS(wxTreeCtrl)
	627	DECLARE_NO_COPY_CLASS(wxTreeCtrl)
	628	}; // end of CLASS wxTreeCtrl
	629
	630	#endif // wxUSE_TREECTRL
	631
	632	#endif
	633	// _WX_TREECTRL_H_