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[wxWidgets.git] / include / wx / os2 / treectrl.h
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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
9// Licence: wxWindows license
10/////////////////////////////////////////////////////////////////////////////
11
12#ifndef _WX_TREECTRL_H_
13#define _WX_TREECTRL_H_
14
15// ----------------------------------------------------------------------------
16// headers
17// ----------------------------------------------------------------------------
18
19#ifdef __GNUG__
20 #pragma interface "treectrl.h"
21#endif
22
23#if wxUSE_TREECTRL
24
25#include "wx/textctrl.h"
26#include "wx/dynarray.h"
27#include "wx/treebase.h"
28
29// the type for "untyped" data
30typedef long wxDataType;
31
32// fwd decl
33class WXDLLEXPORT wxImageList;
34class WXDLLEXPORT wxDragImage;
35struct WXDLLEXPORT wxTreeViewItem;
36
37// a callback function used for sorting tree items, it should return -1 if the
38// first item precedes the second, +1 if the second precedes the first or 0 if
39// they're equivalent
40class wxTreeItemData;
41
42// flags for deprecated `Expand(int action)'
43enum
44{
45 wxTREE_EXPAND_EXPAND,
46 wxTREE_EXPAND_COLLAPSE,
47 wxTREE_EXPAND_COLLAPSE_RESET,
48 wxTREE_EXPAND_TOGGLE
49};
50
51// flags for deprecated InsertItem() variant
52#define wxTREE_INSERT_FIRST 0xFFFF0001
53#define wxTREE_INSERT_LAST 0xFFFF0002
54
55// ----------------------------------------------------------------------------
56// wxTreeCtrl
57// ----------------------------------------------------------------------------
58class WXDLLEXPORT wxTreeCtrl : public wxControl
59{
60public:
61 // creation
62 // --------
63 wxTreeCtrl() { Init(); }
64
65 wxTreeCtrl( wxWindow* pParent
66 ,wxWindowID vId = -1
67 ,const wxPoint& rPos = wxDefaultPosition
68 ,const wxSize& rSize = wxDefaultSize
69 ,long lStyle = wxTR_HAS_BUTTONS | wxTR_LINES_AT_ROOT
70 ,const wxValidator& rValidator = wxDefaultValidator
71 ,const wxString& rsName = wxTreeCtrlNameStr
72 )
73 {
74 Create( pParent
75 ,vId
76 ,rPos
77 ,rSize
78 ,lStyle
79 ,rValidator
80 ,rsName
81 );
82 }
83 virtual ~wxTreeCtrl();
84
85 bool Create( wxWindow* pParent
86 ,wxWindowID vId = -1
87 ,const wxPoint& rPos = wxDefaultPosition
88 ,const wxSize& rSize = wxDefaultSize
89 ,long lStyle = wxTR_HAS_BUTTONS | wxTR_LINES_AT_ROOT
90 ,const wxValidator& rValidator = wxDefaultValidator
91 ,const wxString& rsName = wxTreeCtrlNameStr
92 );
93
94 //
95 // Accessors
96 // ---------
97 //
98
99 //
100 // Get the total number of items in the control
101 //
102 size_t GetCount(void) const;
103
104 //
105 // Indent is the number of pixels the children are indented relative to
106 // the parents position. SetIndent() also redraws the control
107 // immediately.
108 //
109 unsigned int GetIndent(void) const;
110 void SetIndent(unsigned int uIndent);
111
112 //
113 // Spacing is the number of pixels between the start and the Text
114 //
115 unsigned int GetSpacing(void) const { return 18; } // return wxGTK default
116 void SetSpacing(unsigned int uSpacing) { }
117
118 //
119 // Image list: these functions allow to associate an image list with
120 // the control and retrieve it. Note that the control does _not_ delete
121 // the associated image list when it's deleted in order to allow image
122 // lists to be shared between different controls.
123 //
124 // OS/2 doesn't really use imagelists as MSW does, but since the MSW
125 // control is the basis for this one, until I decide how to get rid of
126 // the need for them they are here for now.
127 //
128 wxImageList* GetImageList(void) const;
129 wxImageList* GetStateImageList(void) const;
130
131 void AssignImageList(wxImageList* pImageList);
132 void AssignStateImageList(wxImageList* pImageList);
133 void SetImageList(wxImageList* pImageList);
134 void SetStateImageList(wxImageList* pImageList);
135
136 //
137 // Functions to work with tree ctrl items. Unfortunately, they can _not_ be
138 // member functions of wxTreeItem because they must know the tree the item
139 // belongs to for Windows implementation and storing the pointer to
140 // wxTreeCtrl in each wxTreeItem is just too much waste.
141
142 //
143 // Item's label
144 //
145 wxString GetItemText(const wxTreeItemId& rItem) const;
146 void SetItemText( const wxTreeItemId& rItem
147 ,const wxString& rsText
148 );
149
150 //
151 // One of the images associated with the item (normal by default)
152 //
153 int GetItemImage( const wxTreeItemId& rItem
154 ,wxTreeItemIcon vWhich = wxTreeItemIcon_Normal
155 ) const;
156 void SetItemImage( const wxTreeItemId& rItem
157 ,int nImage
158 ,wxTreeItemIcon vWhich = wxTreeItemIcon_Normal
159 );
160
161 //
162 // Data associated with the item
163 //
164 wxTreeItemData* GetItemData(const wxTreeItemId& rItem) const;
165 void SetItemData( const wxTreeItemId& rItem
166 ,wxTreeItemData* pData
167 );
168
169 //
170 // Item's text colour
171 //
172 wxColour GetItemTextColour(const wxTreeItemId& rItem) const;
173 void SetItemTextColour( const wxTreeItemId& rItem
174 ,const wxColour& rColor
175 );
176
177 //
178 // Item's background colour
179 //
180 wxColour GetItemBackgroundColour(const wxTreeItemId& rItem) const;
181 void SetItemBackgroundColour( const wxTreeItemId& rItem
182 ,const wxColour& rColour
183 );
184
185 //
186 // Item's font
187 //
188 wxFont GetItemFont(const wxTreeItemId& rItem) const;
189 void SetItemFont( const wxTreeItemId& rItem
190 ,const wxFont& rFont
191 );
192
193 //
194 // Force appearance of [+] button near the item. This is useful to
195 // allow the user to expand the items which don't have any children now
196 // - but instead add them only when needed, thus minimizing memory
197 // usage and loading time.
198 //
199 void SetItemHasChildren( const wxTreeItemId& rItem
200 ,bool bHas = TRUE
201 );
202
203 //
204 // The item will be shown in bold
205 //
206 void SetItemBold( const wxTreeItemId& rItem
207 ,bool bBold = TRUE
208 );
209
210 //
211 // The item will be shown with a drop highlight
212 //
213 void SetItemDropHighlight( const wxTreeItemId& rItem
214 ,bool bHighlight = TRUE
215 );
216
217 //
218 // Item status inquiries
219 // ---------------------
220 //
221
222 //
223 // Is the item visible (it might be outside the view or not expanded)?
224 //
225 bool IsVisible(const wxTreeItemId& rItem) const;
226
227 //
228 // Does the item has any children?
229 //
230 bool ItemHasChildren(const wxTreeItemId& rItem) const;
231
232 //
233 // Is the item expanded (only makes sense if HasChildren())?
234 //
235 bool IsExpanded(const wxTreeItemId& rItem) const;
236
237 //
238 // Is this item currently selected (the same as has focus)?
239 //
240 bool IsSelected(const wxTreeItemId& rItem) const;
241
242 //
243 // Is item text in bold font?
244 //
245 bool IsBold(const wxTreeItemId& rItem) const;
246
247 //
248 // Number of children
249 // ------------------
250 //
251
252 //
253 // If 'recursively' is FALSE, only immediate children count, otherwise
254 // the returned number is the number of all items in this branch
255 //
256 size_t GetChildrenCount( const wxTreeItemId& rItem
257 ,bool bRecursively = TRUE
258 ) const;
259
260 //
261 // Navigation
262 // ----------
263 //
264
265 //
266 // Get the root tree item
267 //
268 wxTreeItemId GetRootItem(void) const;
269
270 //
271 // Get the item currently selected (may return NULL if no selection)
272 //
273 wxTreeItemId GetSelection(void) const;
274
275 //
276 // Get the items currently selected, return the number of such item
277 //
278 size_t GetSelections(wxArrayTreeItemIds& rSelections) const;
279
280 //
281 // Get the parent of this item (may return NULL if root)
282 //
283 wxTreeItemId GetItemParent(const wxTreeItemId& rItem) const;
284
285#if WXWIN_COMPATIBILITY_2_2
286 // deprecated: Use GetItemParent instead.
287 wxTreeItemId GetParent(const wxTreeItemId& rItem) const
288 { return GetItemParent(rItem); }
289
290 // Expose the base class method hidden by the one above.
291 wxWindow* GetParent(void) const { return wxControl::GetParent(); }
292#endif // WXWIN_COMPATIBILITY_2_2
293
294 //
295 // For this enumeration function you must pass in a "cookie" parameter
296 // which is opaque for the application but is necessary for the library
297 // to make these functions reentrant (i.e. allow more than one
298 // enumeration on one and the same object simultaneously). Of course,
299 // the "cookie" passed to GetFirstChild() and GetNextChild() should be
300 // the same!
301 //
302
303 //
304 // Get the first child of this item
305 //
306 wxTreeItemId GetFirstChild( const wxTreeItemId& rItem
307 ,long& rCookie
308 ) const;
309
310 //
311 // Get the next child
312 //
313 wxTreeItemId GetNextChild( const wxTreeItemId& rItem
314 ,long& rCookie
315 ) const;
316
317 //
318 // Get the last child of this item - this method doesn't use cookies
319 //
320 wxTreeItemId GetLastChild(const wxTreeItemId& rItem) const;
321
322 //
323 // Get the next sibling of this item
324 //
325 wxTreeItemId GetNextSibling(const wxTreeItemId& rItem) const;
326
327 //
328 // Get the previous sibling
329 //
330 wxTreeItemId GetPrevSibling(const wxTreeItemId& rItem) const;
331
332 //
333 // Get first visible item
334 //
335 wxTreeItemId GetFirstVisibleItem(void) const;
336
337 //
338 // Get the next visible item: item must be visible itself!
339 // see IsVisible() and wxTreeCtrl::GetFirstVisibleItem()
340 //
341 wxTreeItemId GetNextVisible(const wxTreeItemId& rItem) const;
342
343 //
344 // Get the previous visible item: item must be visible itself!
345 //
346 wxTreeItemId GetPrevVisible(const wxTreeItemId& rItem) const;
347
348 //
349 // Operations
350 // ----------
351 //
352
353 //
354 // Add the root node to the tree
355 //
356 wxTreeItemId AddRoot( const wxString& rsText
357 ,int nImage = -1
358 ,int nSelectedImage = -1
359 ,wxTreeItemData* pData = NULL
360 );
361
362 //
363 // Insert a new item in as the first child of the parent
364 //
365 wxTreeItemId PrependItem( const wxTreeItemId& rParent
366 ,const wxString& rsText
367 ,int nImage = -1
368 ,int nSelectedImage = -1
369 ,wxTreeItemData* pData = NULL
370 );
371
372 //
373 // Insert a new item after a given one
374 //
375 wxTreeItemId InsertItem( const wxTreeItemId& rParent
376 ,const wxTreeItemId& rIdPrevious
377 ,const wxString& rsText
378 ,int nImage = -1
379 ,int nSelectedImage = -1
380 ,wxTreeItemData* pData = NULL
381 );
382
383 //
384 // Insert a new item before the one with the given index
385 //
386 wxTreeItemId InsertItem( const wxTreeItemId& pParent
387 ,size_t nIndex
388 ,const wxString& rsText
389 ,int nImage = -1
390 ,int nSelectedImage = -1
391 ,wxTreeItemData* pData = NULL
392 );
393
394 //
395 // Insert a new item in as the last child of the parent
396 //
397 wxTreeItemId AppendItem( const wxTreeItemId& rParent
398 ,const wxString& rsText
399 ,int nImage = -1
400 ,int nSelectedImage = -1
401 ,wxTreeItemData* pData = NULL
402 );
403
404 //
405 // Delete this item and associated data if any
406 //
407 void Delete(const wxTreeItemId& rItem);
408
409 //
410 // Delete all children (but don't delete the item itself)
411 //
412 void DeleteChildren(const wxTreeItemId& rItem);
413
414 //
415 // Delete all items from the tree
416 //
417 void DeleteAllItems(void);
418
419 //
420 // Expand this item
421 //
422 void Expand(const wxTreeItemId& rItem);
423
424 //
425 // Collapse the item without removing its children
426 //
427 void Collapse(const wxTreeItemId& rItem);
428
429 //
430 // Collapse the item and remove all children
431 //
432 void CollapseAndReset(const wxTreeItemId& rItem);
433
434 //
435 // Toggles the current state
436 //
437 void Toggle(const wxTreeItemId& rItem);
438
439 //
440 // Remove the selection from currently selected item (if any)
441 //
442 void Unselect(void);
443
444 //
445 // Unselect all items (only makes sense for multiple selection control)
446 //
447 void UnselectAll(void);
448
449 //
450 // Select this item
451 //
452 void SelectItem(const wxTreeItemId& rItem);
453
454 //
455 // Make sure this item is visible (expanding the parent item and/or
456 // scrolling to this item if necessary)
457 //
458 void EnsureVisible(const wxTreeItemId& rItem);
459
460 //
461 // Scroll to this item (but don't expand its parent)
462 //
463 void ScrollTo(const wxTreeItemId& rItem);
464
465 //
466 // OS/2 does not use a separate edit field for editting text. Here for
467 // interface compatibility, only.
468 //
469 wxTextCtrl* EditLabel( const wxTreeItemId& rItem
470 ,wxClassInfo* pTextCtrlClass = CLASSINFO(wxTextCtrl)
471 );
472
473 //
474 // returns NULL for OS/2 in ALL cases
475 //
476 wxTextCtrl* GetEditControl(void) const {return (wxTextCtrl*)NULL;}
477
478 //
479 // End editing and accept or discard the changes to item label
480 //
481 void EndEditLabel( const wxTreeItemId& rItem
482 ,bool bDiscardChanges = FALSE
483 );
484
485 //
486 // Sorting
487 // -------
488 //
489
490 //
491 // This function is called to compare 2 items and should return -1, 0
492 // or +1 if the first item is less than, equal to or greater than the
493 // second one. The base class version performs alphabetic comparaison
494 // of item labels (GetText)
495 //
496 virtual int OnCompareItems( const wxTreeItemId& rItem1
497 ,const wxTreeItemId& rItem2
498 );
499
500 //
501 // Sort the children of this item using OnCompareItems
502 //
503 void SortChildren(const wxTreeItemId& rItem);
504
505 //
506 // Helpers
507 // -------
508 //
509
510 //
511 // Determine to which item (if any) belongs the given point (the
512 // coordinates specified are relative to the client area of tree ctrl)
513 // and fill the flags parameter with a bitmask of wxTREE_HITTEST_xxx
514 // constants.
515
516 //
517 // The first function is more portable (because easier to implement
518 // on other platforms), but the second one returns some extra info.
519 //
520 wxTreeItemId HitTest(const wxPoint& rPoint)
521 { int nDummy = 0; return HitTest(rPoint, nDummy); }
522 wxTreeItemId HitTest( const wxPoint& rPoint
523 ,int& rFlags
524 );
525
526 //
527 // Get the bounding rectangle of the item (or of its label only)
528 //
529 bool GetBoundingRect( const wxTreeItemId& rItem
530 ,wxRect& rRect
531 ,bool bTextOnly = FALSE
532 ) const;
533
534 //
535 // Deprecated
536 // ----------
537 //
538 // These methods are deprecated and will be removed in future versions of
539 // wxWindows, they're here for compatibility only, don't use them in new
540 // code (the comments indicate why these methods are now useless and how to
541 // replace them)
542 //
543
544 //
545 // Use Expand, Collapse, CollapseAndReset or Toggle
546 //
547 void ExpandItem( const wxTreeItemId& rItem
548 ,int nAction
549 );
550
551 //
552 // Use AddRoot, PrependItem or AppendItem
553 //
554 wxTreeItemId InsertItem( const wxTreeItemId& pParent
555 ,const wxString& rsText
556 ,int nImage = -1
557 ,int nSelImage = -1
558 ,long lInsertAfter = wxTREE_INSERT_LAST
559 );
560
561 //
562 // Use Set/GetImageList and Set/GetStateImageList
563 //
564 wxImageList* GetImageList(int nVal) const
565 { return GetImageList(); }
566 void SetImageList(wxImageList* pImageList, int nVal)
567 { SetImageList(pImageList); }
568
569 //
570 // Use Set/GetItemImage directly
571 //
572 int GetItemSelectedImage(const wxTreeItemId& rItem) const
573 { return GetItemImage(rItem, wxTreeItemIcon_Selected); }
574 void SetItemSelectedImage(const wxTreeItemId& rItem, int nImage)
575 { SetItemImage(rItem, nImage, wxTreeItemIcon_Selected); }
576
577 //
578 // Implementation
579 // --------------
580 //
581
582 virtual MRESULT OS2WindowProc( WXUINT uMsg
583 ,WXWPARAM wParam
584 ,WXLPARAM lParam
585 );
586 virtual bool OS2Command( WXUINT uParam
587 ,WXWORD wId
588 );
589// virtual bool OMSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
590
591 //
592 // Override some base class virtuals
593 //
594 virtual bool SetBackgroundColour(const wxColour& rColour);
595 virtual bool SetForegroundColour(const wxColour& rColour);
596
597 //
598 // Get/set the check state for the item (only for wxTR_MULTIPLE)
599 //
600 bool IsItemChecked(const wxTreeItemId& rItem) const;
601 void SetItemCheck( const wxTreeItemId& rItem
602 ,bool bCheck = TRUE
603 );
604
605protected:
606 //
607 // SetImageList helper
608 //
609 void SetAnyImageList( wxImageList* pImageList
610 ,int nWhich
611 );
612
613 //
614 // Refresh a single item
615 //
616 void RefreshItem(const wxTreeItemId& rItem);
617
618 wxImageList* m_pImageListNormal; // images for tree elements
619 wxImageList* m_pImageListState; // special images for app defined states
620 bool m_bOwnsImageListNormal;
621 bool m_bOwnsImageListState;
622
623private:
624
625 //
626 // The common part of all ctors
627 //
628 void Init(void);
629
630 //
631 // Helper functions
632 //
633 inline bool DoGetItem(wxTreeViewItem* pTvItem) const;
634 inline void DoSetItem(wxTreeViewItem* pTvItem);
635
636 inline void DoExpand( const wxTreeItemId& rItem
637 ,int nFlag
638 );
639 wxTreeItemId DoInsertItem( const wxTreeItemId& pParent
640 ,wxTreeItemId hInsertAfter
641 ,const wxString& rsText
642 ,int nImage
643 ,int nSelectedImage
644 ,wxTreeItemData* pData
645 );
646 int DoGetItemImageFromData( const wxTreeItemId& rItem
647 ,wxTreeItemIcon vWhich
648 ) const;
649 void DoSetItemImageFromData( const wxTreeItemId& rItem
650 ,int nImage
651 ,wxTreeItemIcon vWhich
652 ) const;
653 void DoSetItemImages( const wxTreeItemId& rItem
654 ,int nImage
655 ,int nImageSel
656 );
657 void DeleteTextCtrl() { };
658
659 //
660 // support for additional item images which we implement using
661 // wxTreeItemIndirectData technique - see the comments in msw/treectrl.cpp
662 //
663 void SetIndirectItemData( const wxTreeItemId& rItem
664 ,class wxTreeItemIndirectData* pData
665 );
666 bool HasIndirectData(const wxTreeItemId& rItem) const;
667 bool IsDataIndirect(wxTreeItemData* pData) const
668 { return pData && pData->GetId().m_pItem == 0; }
669
670 //
671 // The hash storing the items attributes (indexed by items ids)
672 //
673 wxHashTable m_vAttrs;
674
675 //
676 // TRUE if the hash above is not empty
677 //
678 bool m_bHasAnyAttr;
679
680 //
681 // Used for dragging
682 //
683 wxDragImage* m_pDragImage;
684
685 // Virtual root item, if wxTR_HIDE_ROOT is set.
686// void* m_pVirtualRoot;
687
688 // the starting item for selection with Shift
689// WXHTREEITEM m_htSelStart;
690//
691 friend class wxTreeItemIndirectData;
692 friend class wxTreeSortHelper;
693
694 DECLARE_DYNAMIC_CLASS(wxTreeCtrl)
695 DECLARE_NO_COPY_CLASS(wxTreeCtrl)
696}; // end of CLASS wxTreeCtrl
697
698#endif // wxUSE_TREECTRL
699
700#endif
701 // _WX_TREECTRL_H_
wxWidgets (Impactor)