///////////////////////////////////////////////////////////////////////////// // Name: treectrl.h // Purpose: wxTreeCtrl base classes and types // Author: Julian Smart et al // Modified by: // Created: 01/02/97 // RCS-ID: $Id$ // Copyright: (c) 1997,1998 Robert Roebling // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_TREEBASE_H_ #define _WX_TREEBASE_H_ #ifdef __GNUG__ #pragma interface "treebase.h" #endif // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- #include "wx/control.h" #include "wx/event.h" // ---------------------------------------------------------------------------- // 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. // ---------------------------------------------------------------------------- // Using this typedef removes an ambiguity when calling Remove() typedef unsigned long wxTreeItemIdValue; class WXDLLEXPORT wxTreeItemId { friend class WXDLLEXPORT wxTreeCtrl; friend class WXDLLEXPORT wxGenericTreeCtrl; friend class WXDLLEXPORT wxTreeEvent; public: // ctors // 0 is invalid value for HTREEITEM wxTreeItemId() { m_pItem = 0; } // default copy ctor/assignment operator are ok for us // accessors // is this a valid tree item? bool IsOk() const { return m_pItem != 0; } // deprecated: only for compatibility wxTreeItemId(long itemId) { m_pItem = itemId; } //operator long() const { return m_pItem; } operator wxTreeItemIdValue() const { return m_pItem; } void operator=(long item) { m_pItem = item; } wxTreeItemId(void *pItem) { m_pItem = (long) pItem; } wxTreeItemIdValue m_pItem; }; // ---------------------------------------------------------------------------- // 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: public wxClientData { friend class WXDLLEXPORT wxTreeCtrl; friend class WXDLLEXPORT wxGenericTreeCtrl; public: // creation/destruction // -------------------- // default ctor wxTreeItemData() { } // default copy ctor/assignment operator are ok // accessor: get the item associated with us const wxTreeItemId& GetId() const { return m_pItem; } void SetId(const wxTreeItemId& id) { m_pItem = id; } protected: wxTreeItemId m_pItem; }; WX_DEFINE_EXPORTED_ARRAY(wxTreeItemId, wxArrayTreeItemIds); // ---------------------------------------------------------------------------- // constants // ---------------------------------------------------------------------------- // enum for different images associated with a treectrl item enum wxTreeItemIcon { wxTreeItemIcon_Normal, // not selected, not expanded wxTreeItemIcon_Selected, // selected, not expanded wxTreeItemIcon_Expanded, // not selected, expanded wxTreeItemIcon_SelectedExpanded, // selected, expanded wxTreeItemIcon_Max }; // values for the `flags' parameter of wxTreeCtrl::HitTest() which determine // where exactly the specified point is situated: static const int wxTREE_HITTEST_ABOVE = 0x0001; static const int wxTREE_HITTEST_BELOW = 0x0002; static const int wxTREE_HITTEST_NOWHERE = 0x0004; // on the button associated with an item. static const int wxTREE_HITTEST_ONITEMBUTTON = 0x0008; // on the bitmap associated with an item. static const int wxTREE_HITTEST_ONITEMICON = 0x0010; // on the indent associated with an item. static const int wxTREE_HITTEST_ONITEMINDENT = 0x0020; // on the label (string) associated with an item. static const int wxTREE_HITTEST_ONITEMLABEL = 0x0040; // on the right of the label associated with an item. static const int wxTREE_HITTEST_ONITEMRIGHT = 0x0080; // on the label (string) associated with an item. static const int wxTREE_HITTEST_ONITEMSTATEICON = 0x0100; // on the left of the wxTreeCtrl. static const int wxTREE_HITTEST_TOLEFT = 0x0200; // on the right of the wxTreeCtrl. static const int wxTREE_HITTEST_TORIGHT = 0x0400; // on the upper part (first half) of the item. static const int wxTREE_HITTEST_ONITEMUPPERPART = 0x0800; // on the lower part (second half) of the item. static const int wxTREE_HITTEST_ONITEMLOWERPART = 0x1000; // anywhere on the item static const int wxTREE_HITTEST_ONITEM = wxTREE_HITTEST_ONITEMICON | wxTREE_HITTEST_ONITEMLABEL; // tree ctrl default name WXDLLEXPORT_DATA(extern const char*) wxTreeCtrlNameStr; // ---------------------------------------------------------------------------- // wxTreeItemAttr: a structure containing the visual attributes of an item // ---------------------------------------------------------------------------- class WXDLLEXPORT wxTreeItemAttr { public: // ctors wxTreeItemAttr() { } wxTreeItemAttr(const wxColour& colText, const wxColour& colBack, const wxFont& font) : m_colText(colText), m_colBack(colBack), m_font(font) { } // setters void SetTextColour(const wxColour& colText) { m_colText = colText; } void SetBackgroundColour(const wxColour& colBack) { m_colBack = colBack; } void SetFont(const wxFont& font) { m_font = font; } // accessors bool HasTextColour() const { return m_colText.Ok(); } bool HasBackgroundColour() const { return m_colBack.Ok(); } bool HasFont() const { return m_font.Ok(); } const wxColour& GetTextColour() const { return m_colText; } const wxColour& GetBackgroundColour() const { return m_colBack; } const wxFont& GetFont() const { return m_font; } private: wxColour m_colText, m_colBack; wxFont m_font; }; // ---------------------------------------------------------------------------- // 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 wxNotifyEvent { friend class WXDLLEXPORT wxTreeCtrl; friend class WXDLLEXPORT wxGenericTreeCtrl; public: wxTreeEvent(wxEventType commandType = wxEVT_NULL, int id = 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; } // for wxEVT_COMMAND_TREE_SEL_CHANGED/ING events, get the previously // selected item wxTreeItemId GetOldItem() const { return m_itemOld; } // 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; } // keyboard code (for wxEVT_COMMAND_TREE_KEY_DOWN only) int GetCode() const { return m_code; } // label (for EVT_TREE_{BEGIN|END}_LABEL_EDIT only) const wxString& GetLabel() const { return m_label; } private: // we could probably save some space by using union here int m_code; wxTreeItemId m_item, m_itemOld; wxPoint m_pointDrag; wxString m_label; DECLARE_DYNAMIC_CLASS(wxTreeEvent) }; typedef void (wxEvtHandler::*wxTreeEventFunction)(wxTreeEvent&); // ---------------------------------------------------------------------------- // macros for handling tree control events // ---------------------------------------------------------------------------- // GetItem() returns the item being dragged, GetPoint() the mouse coords // // if you call event.Allow(), the drag operation will start and a // EVT_TREE_END_DRAG event will be sent when the drag is over. #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() is the item on which the drop occured (if any) and GetPoint() the // current mouse coords #define EVT_TREE_END_DRAG(id, fn) { wxEVT_COMMAND_TREE_END_DRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL }, // GetItem() returns the itme whose label is being edited, GetLabel() returns // the current item label for BEGIN and the would be new one for END. // // Vetoing BEGIN event means that label editing won't happen at all, // vetoing END means that the new value is discarded and the old one kept #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 }, // GetItem() returns the item that was activated (double click, enter, space) #define EVT_TREE_ITEM_ACTIVATED(id, fn) { wxEVT_COMMAND_TREE_ITEM_ACTIVATED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL }, // GetItem() returns the item that was clicked on #define EVT_TREE_ITEM_RIGHT_CLICK(id, fn) { wxEVT_COMMAND_TREE_ITEM_RIGHT_CLICK, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL }, #define EVT_TREE_ITEM_MIDDLE_CLICK(id, fn) { wxEVT_COMMAND_TREE_ITEM_MIDDLE_CLICK, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL }, #endif // _WX_TREEBASE_H_