X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/06e38c8e2e9738fe65ccc21349b7328cac5df2de..e78d4a23c27aa9b5e826d56c76c80d46d67812c1:/include/wx/msw/treectrl.h diff --git a/include/wx/msw/treectrl.h b/include/wx/msw/treectrl.h index bb44c4e08b..dd1deab918 100644 --- a/include/wx/msw/treectrl.h +++ b/include/wx/msw/treectrl.h @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: treectrl.h +// Name: wx/msw/treectrl.h // Purpose: wxTreeCtrl class // Author: Julian Smart // Modified by: Vadim Zeitlin to be less MSW-specific on 10/10/98 @@ -15,58 +15,35 @@ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- + #ifdef __GNUG__ #pragma interface "treectrl.h" #endif -#include "wx/control.h" -#include "wx/event.h" +#if wxUSE_TREECTRL + +#include "wx/textctrl.h" +#include "wx/dynarray.h" +#include "wx/treebase.h" + +#ifdef __GNUWIN32__ + // Cygwin windows.h defines these identifiers + #undef GetFirstChild + #undef GetNextSibling +#endif // Cygwin // the type for "untyped" data typedef long wxDataType; // fwd decl class WXDLLEXPORT wxImageList; +class WXDLLEXPORT wxDragImage; struct WXDLLEXPORT 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; -typedef int (*wxTreeItemCmpFunc)(wxTreeItemData *item1, wxTreeItemData *item2); - -// ---------------------------------------------------------------------------- -// constants -// ---------------------------------------------------------------------------- - -// values for the `flags' parameter of wxTreeCtrl::HitTest() which determine -// where exactly the specified point is situated: - // above the client area. -static const int wxTREE_HITTEST_ABOVE = 0x0001; - // below the client area. -static const int wxTREE_HITTEST_BELOW = 0x0002; - // in the client area but below the last item. -static const int wxTREE_HITTEST_NOWHERE = 0x0004; - // on the button associated with an item. -static const int wxTREE_HITTEST_ONITEMBUTTON = 0x0010; - // on the bitmap associated with an item. -static const int wxTREE_HITTEST_ONITEMICON = 0x0020; - // in the indentation associated with an item. -static const int wxTREE_HITTEST_ONITEMINDENT = 0x0040; - // on the label (string) associated with an item. -static const int wxTREE_HITTEST_ONITEMLABEL = 0x0080; - // in the area to the right of an item. -static const int wxTREE_HITTEST_ONITEMRIGHT = 0x0100; - // on the state icon for a tree view item that is in a user-defined state. -static const int wxTREE_HITTEST_ONITEMSTATEICON = 0x0200; - // to the right of the client area. -static const int wxTREE_HITTEST_TOLEFT = 0x0400; - // to the left of the client area. -static const int wxTREE_HITTEST_TORIGHT = 0x0800; - // anywhere on the item -static const int wxTREE_HITTEST_ONITEM = wxTREE_HITTEST_ONITEMICON | - wxTREE_HITTEST_ONITEMLABEL | - wxTREE_HITTEST_ONITEMSTATEICON; // NB: all the following flags are for compatbility only and will be removed in the // next versions @@ -84,76 +61,6 @@ enum #define wxTREE_INSERT_FIRST 0xFFFF0001 #define wxTREE_INSERT_LAST 0xFFFF0002 -// ---------------------------------------------------------------------------- -// wxTreeItemId identifies an element of the tree. In this implementation, it's -// just a trivial wrapper around Win32 HTREEITEM. It's opaque for the -// application. -// ---------------------------------------------------------------------------- -class WXDLLEXPORT wxTreeItemId -{ -public: - // ctors - // 0 is invalid value for HTREEITEM - wxTreeItemId() { m_itemId = 0; } - - // default copy ctor/assignment operator are ok for us - - // accessors - // is this a valid tree item? - bool IsOk() const { return m_itemId != 0; } - - // conversion to/from either real (system-dependent) tree item id or - // to "long" which used to be the type for tree item ids in previous - // versions of wxWindows - - // for wxTreeCtrl usage only - wxTreeItemId(WXHTREEITEM itemId) { m_itemId = (long)itemId; } - operator WXHTREEITEM() const { return (WXHTREEITEM)m_itemId; } - - void operator =(WXHTREEITEM item) { m_itemId = (long) item; } - -// wxTreeItemId(long itemId) { m_itemId = itemId; } - -protected: - long m_itemId; -}; - -// ---------------------------------------------------------------------------- -// wxTreeItemData is some (arbitrary) user class associated with some item. The -// main advantage of having this class (compared to old untyped interface) is -// that wxTreeItemData's are destroyed automatically by the tree and, as this -// class has virtual dtor, it means that the memory will be automatically -// freed. OTOH, we don't just use wxObject instead of wxTreeItemData because -// the size of this class is critical: in any real application, each tree leaf -// will have wxTreeItemData associated with it and number of leaves may be -// quite big. -// -// Because the objects of this class are deleted by the tree, they should -// always be allocated on the heap! -// ---------------------------------------------------------------------------- -class WXDLLEXPORT wxTreeItemData -{ -friend class wxTreeCtrl; -public: - // creation/destruction - // -------------------- - // default ctor - wxTreeItemData() { } - - // default copy ctor/assignment operator are ok - - // dtor is virtual and all the items are deleted by the tree control - // when it's deleted, so you normally don't have to care about freeing - // memory allocated in your wxTreeItemData-derived class - virtual ~wxTreeItemData() { } - - // accessor: get the item associated with us - const wxTreeItemId& GetItemId() const { return m_itemId; } - -protected: - wxTreeItemId m_itemId; -}; - // ---------------------------------------------------------------------------- // wxTreeCtrl // ---------------------------------------------------------------------------- @@ -195,6 +102,11 @@ public: unsigned int GetIndent() const; void SetIndent(unsigned int indent); + // spacing is the number of pixels between the start and the Text + // not implemented under wxMSW + unsigned int GetSpacing() const { return 18; } // return wxGTK default + void SetSpacing(unsigned int WXUNUSED(spacing)) { } + // 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 @@ -210,6 +122,8 @@ public: void SetImageList(wxImageList *imageList); void SetStateImageList(wxImageList *imageList); + void AssignImageList(wxImageList *imageList); + void AssignStateImageList(wxImageList *imageList); // Functions to work with tree ctrl items. Unfortunately, they can _not_ be // member functions of wxTreeItem because they must know the tree the item @@ -221,10 +135,9 @@ public: // retrieve items label wxString GetItemText(const wxTreeItemId& item) const; - // get the normal item image - int GetItemImage(const wxTreeItemId& item) const; - // get the selected item image - int GetItemSelectedImage(const wxTreeItemId& item) const; + // get one of the images associated with the item (normal by default) + int GetItemImage(const wxTreeItemId& item, + wxTreeItemIcon which = wxTreeItemIcon_Normal) const; // get the data associated with the item wxTreeItemData *GetItemData(const wxTreeItemId& item) const; @@ -233,13 +146,33 @@ public: // set items label void SetItemText(const wxTreeItemId& item, const wxString& text); - // set the normal item image - void SetItemImage(const wxTreeItemId& item, int image); - // set the selected item image - void SetItemSelectedImage(const wxTreeItemId& item, int image); + // get one of the images associated with the item (normal by default) + void SetItemImage(const wxTreeItemId& item, int image, + wxTreeItemIcon which = wxTreeItemIcon_Normal); // associate some data with the item void SetItemData(const wxTreeItemId& item, wxTreeItemData *data); + // 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& item, bool has = TRUE); + + // the item will be shown in bold + void SetItemBold(const wxTreeItemId& item, bool bold = TRUE); + + // the item will be shown with a drop highlight + void SetItemDropHighlight(const wxTreeItemId& item, bool highlight = TRUE); + + // set the items text colour + void SetItemTextColour(const wxTreeItemId& item, const wxColour& col); + + // set the items background colour + void SetItemBackgroundColour(const wxTreeItemId& item, const wxColour& col); + + // set the items font (should be of the same height for all items) + void SetItemFont(const wxTreeItemId& item, const wxFont& font); + // item status inquiries // --------------------- @@ -251,6 +184,16 @@ public: bool IsExpanded(const wxTreeItemId& item) const; // is this item currently selected (the same as has focus)? bool IsSelected(const wxTreeItemId& item) const; + // is item text in bold font? + bool IsBold(const wxTreeItemId& item) const; + + // number of children + // ------------------ + + // if 'recursively' is FALSE, only immediate children count, otherwise + // the returned number is the number of all items in this branch + size_t GetChildrenCount(const wxTreeItemId& item, + bool recursively = TRUE) const; // navigation // ---------- @@ -263,6 +206,12 @@ public: // get the item currently selected (may return NULL if no selection) wxTreeItemId GetSelection() const; + // get the items currently selected, return the number of such item + // + // NB: this operation is expensive and can take a long time for a + // control with a lot of items (~ O(number of items)). + size_t GetSelections(wxArrayTreeItemIds& selections) const; + // get the parent of this item (may return NULL if root) wxTreeItemId GetParent(const wxTreeItemId& item) const; @@ -277,6 +226,8 @@ public: wxTreeItemId GetFirstChild(const wxTreeItemId& item, long& _cookie) const; // get the next child wxTreeItemId GetNextChild(const wxTreeItemId& item, long& _cookie) const; + // get the last child of this item - this method doesn't use cookies + wxTreeItemId GetLastChild(const wxTreeItemId& item) const; // get the next sibling of this item wxTreeItemId GetNextSibling(const wxTreeItemId& item) const; @@ -312,6 +263,13 @@ public: int image = -1, int selectedImage = -1, wxTreeItemData *data = NULL); + // insert a new item before the one with the given index + wxTreeItemId InsertItem(const wxTreeItemId& parent, + size_t index, + const wxString& text, + int image = -1, int selectedImage = -1, + wxTreeItemData *data = NULL); + // insert a new item in as the last child of the parent wxTreeItemId AppendItem(const wxTreeItemId& parent, const wxString& text, @@ -320,7 +278,11 @@ public: // delete this item and associated data if any void Delete(const wxTreeItemId& item); + // delete all children (but don't delete the item itself) + // NB: this won't send wxEVT_COMMAND_TREE_ITEM_DELETED events + void DeleteChildren(const wxTreeItemId& item); // delete all items from the tree + // NB: this won't send wxEVT_COMMAND_TREE_ITEM_DELETED events void DeleteAllItems(); // expand this item @@ -334,6 +296,8 @@ public: // remove the selection from currently selected item (if any) void Unselect(); + // unselect all items (only makes sense for multiple selection control) + void UnselectAll(); // select this item void SelectItem(const wxTreeItemId& item); // make sure this item is visible (expanding the parent item and/or @@ -355,30 +319,37 @@ public: // end editing and accept or discard the changes to item label void EndEditLabel(const wxTreeItemId& item, bool discardChanges = FALSE); - // sort the children of this item using the specified callback function - // (it should return -1, 0 or +1 as usual), if it's not specified - // alphabetical comparaison is performed. + // 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& item1, + const wxTreeItemId& item2); + // sort the children of this item using OnCompareItems // - // NB: this function is not reentrant! - void SortChildren(const wxTreeItemId& item, - wxTreeItemCmpFunc *cmpFunction = NULL); + // NB: this function is not reentrant and not MT-safe (FIXME)! + void SortChildren(const wxTreeItemId& item); // helpers // ------- - // @@@ do we really need to expose these functions to the application? - - // get the bounding rectangle of the item (or of its label only) - void GetBoundingRect(const wxTreeItemId& item, - wxRectangle& rect, - bool textOnly = FALSE) const; - // 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 + // 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& point) + { int dummy; return HitTest(point, dummy); } wxTreeItemId HitTest(const wxPoint& point, int& flags); + // get the bounding rectangle of the item (or of its label only) + bool GetBoundingRect(const wxTreeItemId& item, + wxRect& rect, + bool textOnly = FALSE) const; + // deprecated // ---------- @@ -402,19 +373,40 @@ public: void SetImageList(wxImageList *imageList, int) { SetImageList(imageList); } + // use Set/GetItemImage directly + // get the selected item image + int GetItemSelectedImage(const wxTreeItemId& item) const + { return GetItemImage(item, wxTreeItemIcon_Selected); } + // set the selected item image + void SetItemSelectedImage(const wxTreeItemId& item, int image) + { SetItemImage(item, image, wxTreeItemIcon_Selected); } + // implementation // -------------- - void Command(wxCommandEvent& event) { ProcessCommand(event); }; - bool MSWCommand(WXUINT param, WXWORD id); - bool MSWNotify(WXWPARAM wParam, WXLPARAM lParam); + + virtual long MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam); + virtual bool MSWCommand(WXUINT param, WXWORD id); + virtual bool MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result); + + // override some base class virtuals + virtual bool SetBackgroundColour(const wxColour &colour); + virtual bool SetForegroundColour(const wxColour &colour); + + // get/set the check state for the item (only for wxTR_MULTIPLE) + bool IsItemChecked(const wxTreeItemId& item) const; + void SetItemCheck(const wxTreeItemId& item, bool check = TRUE); protected: // SetImageList helper void SetAnyImageList(wxImageList *imageList, int which); - wxTextCtrl* m_textCtrl; // used while editing the item label + // refresh a single item + void RefreshItem(const wxTreeItemId& item); + + wxTextCtrl *m_textCtrl; // used while editing the item label wxImageList *m_imageListNormal, // images for tree elements *m_imageListState; // special images for app defined states + bool m_ownsImageListNormal, m_ownsImageListState; private: // the common part of all ctors @@ -432,90 +424,45 @@ private: int image, int selectedImage, wxTreeItemData *data); - void DeleteTextCtrl(); + int DoGetItemImageFromData(const wxTreeItemId& item, + wxTreeItemIcon which) const; + void DoSetItemImageFromData(const wxTreeItemId& item, + int image, + wxTreeItemIcon which) const; + void DoSetItemImages(const wxTreeItemId& item, int image, int imageSel); - DECLARE_DYNAMIC_CLASS(wxTreeCtrl) -}; + void DeleteTextCtrl(); -// ---------------------------------------------------------------------------- -// wxTreeEvent is a special class for all events associated with tree controls -// -// NB: note that not all accessors make sense for all events, see the event -// descriptions below -// ---------------------------------------------------------------------------- -class WXDLLEXPORT wxTreeEvent : public wxCommandEvent -{ -friend wxTreeCtrl; -public: - wxTreeEvent(wxEventType commandType = wxEVT_NULL, int id = 0); + // support for additional item images which we implement using + // wxTreeItemIndirectData technique - see the comments in msw/treectrl.cpp + void SetIndirectItemData(const wxTreeItemId& item, + class wxTreeItemIndirectData *data); + bool HasIndirectData(const wxTreeItemId& item) const; + bool IsDataIndirect(wxTreeItemData *data) const + { return data && data->GetId().m_pItem == 0; } - // accessors - // get the item on which the operation was performed or the newly - // selected item for wxEVT_COMMAND_TREE_SEL_CHANGED/ING events - wxTreeItemId GetItem() const { return m_item; } + // the hash storing the items attributes (indexed by items ids) + wxHashTable m_attrs; - // for wxEVT_COMMAND_TREE_SEL_CHANGED/ING events, get the previously - // selected item - wxTreeItemId GetOldItem() const { return m_itemOld; } + // TRUE if the hash above is not empty + bool m_hasAnyAttr; - // the point where the mouse was when the drag operation started (for - // wxEVT_COMMAND_TREE_BEGIN_(R)DRAG events only) - wxPoint GetPoint() const { return m_pointDrag; } + // used for dragging + wxDragImage *m_dragImage; - // keyboard code (for wxEVT_COMMAND_TREE_KEY_DOWN only) - int GetCode() const { return m_code; } + // Virtual root item, if wxTR_HIDE_ROOT is set. + void* m_pVirtualRoot; - // set return code for wxEVT_COMMAND_TREE_ITEM_{EXPAND|COLLAPS}ING events - // call this to forbid the change in item status - void Veto() { m_code = TRUE; } + // the starting item for selection with Shift + WXHTREEITEM m_htSelStart; -private: - // @@ we could save some space by using union here - int m_code; - wxTreeItemId m_item, - m_itemOld; - wxPoint m_pointDrag; + friend class wxTreeItemIndirectData; + friend class wxTreeSortHelper; - DECLARE_DYNAMIC_CLASS(wxTreeEvent) + DECLARE_DYNAMIC_CLASS(wxTreeCtrl) }; -typedef void (wxEvtHandler::*wxTreeEventFunction)(wxTreeEvent&); - -// ---------------------------------------------------------------------------- -// macros for handling tree control events -// ---------------------------------------------------------------------------- - -// GetItem() returns the item being dragged, GetPoint() the mouse coords -#define EVT_TREE_BEGIN_DRAG(id, fn) { wxEVT_COMMAND_TREE_BEGIN_DRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, -#define EVT_TREE_BEGIN_RDRAG(id, fn) { wxEVT_COMMAND_TREE_BEGIN_RDRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, - -// GetItem() returns the itme whose label is being edited -#define EVT_TREE_BEGIN_LABEL_EDIT(id, fn) { wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, -#define EVT_TREE_END_LABEL_EDIT(id, fn) { wxEVT_COMMAND_TREE_END_LABEL_EDIT, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, - -// provide/update information about GetItem() item -#define EVT_TREE_GET_INFO(id, fn) { wxEVT_COMMAND_TREE_GET_INFO, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, -#define EVT_TREE_SET_INFO(id, fn) { wxEVT_COMMAND_TREE_SET_INFO, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, - -// GetItem() is the item being expanded/collapsed, the "ING" versions can use -#define EVT_TREE_ITEM_EXPANDED(id, fn) { wxEVT_COMMAND_TREE_ITEM_EXPANDED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, -#define EVT_TREE_ITEM_EXPANDING(id, fn) { wxEVT_COMMAND_TREE_ITEM_EXPANDING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, -#define EVT_TREE_ITEM_COLLAPSED(id, fn) { wxEVT_COMMAND_TREE_ITEM_COLLAPSED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, -#define EVT_TREE_ITEM_COLLAPSING(id, fn) { wxEVT_COMMAND_TREE_ITEM_COLLAPSING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL }, - -// GetOldItem() is the item which had the selection previously, GetItem() is -// the item which acquires selection -#define EVT_TREE_SEL_CHANGED(id, fn) { wxEVT_COMMAND_TREE_SEL_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL }, -#define EVT_TREE_SEL_CHANGING(id, fn) { wxEVT_COMMAND_TREE_SEL_CHANGING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL }, - -// GetCode() returns the key code -// NB: this is the only message for which GetItem() is invalid (you may get the -// item from GetSelection()) -#define EVT_TREE_KEY_DOWN(id, fn) { wxEVT_COMMAND_TREE_KEY_DOWN, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL }, - -// GetItem() returns the item being deleted, the associated data (if any) will -// be deleted just after the return of this event handler (if any) -#define EVT_TREE_DELETE_ITEM(id, fn) { wxEVT_COMMAND_TREE_DELETE_ITEM, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, +#endif // wxUSE_TREECTRL #endif // _WX_TREECTRL_H_