wxWidgets/include/wx/generic/treectlg.h
2001-07-04 10:08:44 +00:00

459 lines
18 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: treectrl.h
// Purpose: wxTreeCtrl class
// Author: Robert Roebling
// Modified by:
// Created: 01/02/97
// RCS-ID: $Id$
// Copyright: (c) 1997,1998 Robert Roebling
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
#ifndef _GENERIC_TREECTRL_H_
#define _GENERIC_TREECTRL_H_
#ifdef __GNUG__
#pragma interface "treectlg.h"
#endif
#if wxUSE_TREECTRL
#include "wx/defs.h"
#include "wx/string.h"
#include "wx/object.h"
#include "wx/event.h"
#include "wx/scrolwin.h"
#include "wx/textctrl.h"
#include "wx/pen.h"
#include "wx/dynarray.h"
#include "wx/timer.h"
#include "wx/treebase.h"
// -----------------------------------------------------------------------------
// forward declaration
// -----------------------------------------------------------------------------
class WXDLLEXPORT wxImageList;
class WXDLLEXPORT wxGenericTreeItem;
class WXDLLEXPORT wxTreeItemData;
class WXDLLEXPORT wxTreeRenameTimer;
class WXDLLEXPORT wxTreeTextCtrl;
// -----------------------------------------------------------------------------
// wxGenericTreeCtrl - the tree control
// -----------------------------------------------------------------------------
class WXDLLEXPORT wxGenericTreeCtrl : public wxScrolledWindow
{
public:
// creation
// --------
wxGenericTreeCtrl() { Init(); }
wxGenericTreeCtrl(wxWindow *parent, wxWindowID id = -1,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
#ifdef __WXMAC__
long style = wxTR_MAC_BUTTONS | wxTR_NO_LINES | wxTR_ROW_LINES,
#else
long style = wxTR_HAS_BUTTONS | wxTR_LINES_AT_ROOT,
#endif
const wxValidator &validator = wxDefaultValidator,
const wxString& name = wxTreeCtrlNameStr)
{
Init();
Create(parent, id, pos, size, style, validator, name);
}
virtual ~wxGenericTreeCtrl();
bool Create(wxWindow *parent, wxWindowID id = -1,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
#ifdef __WXMAC__
long style = wxTR_MAC_BUTTONS | wxTR_NO_LINES | wxTR_ROW_LINES,
#else
long style = wxTR_HAS_BUTTONS | wxTR_LINES_AT_ROOT,
#endif
const wxValidator &validator = wxDefaultValidator,
const wxString& name = wxTreeCtrlNameStr);
// accessors
// ---------
// get the total number of items in the control
size_t GetCount() 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() const { return m_indent; }
void SetIndent(unsigned int indent);
// spacing is the number of pixels between the start and the Text
unsigned int GetSpacing() const { return m_spacing; }
void SetSpacing(unsigned int spacing);
// image list: these functions allow to associate an image list with
// the control and retrieve it. Note that when assigned with
// SetImageList, 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. If you use
// AssignImageList, the control _does_ delete the image list.
//
// The normal image list is for the icons which correspond to the
// normal tree item state (whether it is selected or not).
// Additionally, the application might choose to show a state icon
// which corresponds to an app-defined item state (for example,
// checked/unchecked) which are taken from the state image list.
wxImageList *GetImageList() const;
wxImageList *GetStateImageList() const;
void SetImageList(wxImageList *imageList);
void SetStateImageList(wxImageList *imageList);
void AssignImageList(wxImageList *imageList);
void AssignStateImageList(wxImageList *imageList);
// Functions to work with tree ctrl items.
// accessors
// ---------
// retrieve items label
wxString GetItemText(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;
// modifiers
// ---------
// set items label
void SetItemText(const wxTreeItemId& item, const wxString& text);
// 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);
// 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);
// set the window font
virtual bool SetFont( const wxFont &font );
// item status inquiries
// ---------------------
// is the item visible (it might be outside the view or not expanded)?
bool IsVisible(const wxTreeItemId& item) const;
// does the item has any children?
bool HasChildren(const wxTreeItemId& item) const
{ return ItemHasChildren(item); }
bool ItemHasChildren(const wxTreeItemId& item) const;
// is the item expanded (only makes sense if HasChildren())?
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);
// navigation
// ----------
// wxTreeItemId.IsOk() will return FALSE if there is no such item
// get the root tree item
wxTreeItemId GetRootItem() const { return m_anchor; }
// get the item currently selected (may return NULL if no selection)
wxTreeItemId GetSelection() const { return m_current; }
// get the items currently selected, return the number of such item
size_t GetSelections(wxArrayTreeItemIds&) const;
// get the parent of this item (may return NULL if root)
wxTreeItemId GetParent(const wxTreeItemId& item) 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, 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;
// get the previous sibling
wxTreeItemId GetPrevSibling(const wxTreeItemId& item) const;
// get first visible item
wxTreeItemId GetFirstVisibleItem() const;
// get the next visible item: item must be visible itself!
// see IsVisible() and wxTreeCtrl::GetFirstVisibleItem()
wxTreeItemId GetNextVisible(const wxTreeItemId& item) const;
// get the previous visible item: item must be visible itself!
wxTreeItemId GetPrevVisible(const wxTreeItemId& item) const;
// Only for internal use right now, but should probably be public
wxTreeItemId GetNext(const wxTreeItemId& item) const;
wxTreeItemId GetPrev(const wxTreeItemId& item) const;
// operations
// ----------
// add the root node to the tree
wxTreeItemId AddRoot(const wxString& text,
int image = -1, int selectedImage = -1,
wxTreeItemData *data = NULL);
// insert a new item in as the first child of the parent
wxTreeItemId PrependItem(const wxTreeItemId& parent,
const wxString& text,
int image = -1, int selectedImage = -1,
wxTreeItemData *data = NULL);
// insert a new item after a given one
wxTreeItemId InsertItem(const wxTreeItemId& parent,
const wxTreeItemId& idPrevious,
const wxString& text,
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,
int image = -1, int selectedImage = -1,
wxTreeItemData *data = NULL);
// 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
void Expand(const wxTreeItemId& item);
// expand this item and all subitems recursively
void ExpandAll(const wxTreeItemId& item);
// collapse the item without removing its children
void Collapse(const wxTreeItemId& item);
// collapse the item and remove all children
void CollapseAndReset(const wxTreeItemId& item);
// toggles the current state
void Toggle(const wxTreeItemId& item);
// remove the selection from currently selected item (if any)
void Unselect();
void UnselectAll();
// select this item
void SelectItem(const wxTreeItemId& item, bool unselect_others=TRUE, bool extended_select=FALSE);
// make sure this item is visible (expanding the parent item and/or
// scrolling to this item if necessary)
void EnsureVisible(const wxTreeItemId& item);
// scroll to this item (but don't expand its parent)
void ScrollTo(const wxTreeItemId& item);
// 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;
// Start editing the item label: this (temporarily) replaces the item
// with a one line edit control. The item will be selected if it hadn't
// been before.
void EditLabel( const wxTreeItemId& item ) { Edit( item ); }
void Edit( const wxTreeItemId& item );
// 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 and not MT-safe (FIXME)!
void SortChildren(const wxTreeItemId& item);
// deprecated functions: 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 only from now on
// callbacks
void OnPaint( wxPaintEvent &event );
void OnSetFocus( wxFocusEvent &event );
void OnKillFocus( wxFocusEvent &event );
void OnChar( wxKeyEvent &event );
void OnMouse( wxMouseEvent &event );
void OnIdle( wxIdleEvent &event );
// implementation helpers
void SendDeleteEvent(wxGenericTreeItem *itemBeingDeleted);
void DrawBorder(const wxTreeItemId& item);
void DrawLine(const wxTreeItemId& item, bool below);
protected:
friend class wxGenericTreeItem;
friend class wxTreeRenameTimer;
friend class wxTreeTextCtrl;
wxFont m_normalFont;
wxFont m_boldFont;
wxGenericTreeItem *m_anchor;
wxGenericTreeItem *m_current, *m_key_current, *m_currentEdit;
bool m_hasFocus;
bool m_dirty;
int m_xScroll,m_yScroll;
unsigned int m_indent;
unsigned int m_spacing;
int m_lineHeight;
wxPen m_dottedPen;
wxBrush *m_hilightBrush;
wxImageList *m_imageListNormal,
*m_imageListState;
bool m_ownsImageListNormal,
m_ownsImageListState;
int m_dragCount;
wxPoint m_dragStart;
bool m_isDragging; // true between BEGIN/END drag events
wxGenericTreeItem *m_dropTarget;
wxCursor m_oldCursor; // cursor is changed while dragging
wxGenericTreeItem *m_oldSelection;
wxTimer *m_renameTimer;
bool m_renameAccept;
bool m_lastOnSame; // last click on the same item as prev
wxString m_renameRes;
// the common part of all ctors
void Init();
// misc helpers
wxTreeItemId DoInsertItem(const wxTreeItemId& parent,
size_t previous,
const wxString& text,
int image, int selectedImage,
wxTreeItemData *data);
public:
void AdjustMyScrollbars();
protected:
int GetLineHeight(wxGenericTreeItem *item) const;
void PaintLevel( wxGenericTreeItem *item, wxDC& dc, int level, int &y );
void PaintItem( wxGenericTreeItem *item, wxDC& dc);
void CalculateLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y );
void CalculatePositions();
void CalculateSize( wxGenericTreeItem *item, wxDC &dc );
void RefreshSubtree( wxGenericTreeItem *item );
void RefreshLine( wxGenericTreeItem *item );
void OnRenameTimer();
void OnRenameAccept();
void FillArray(wxGenericTreeItem*, wxArrayTreeItemIds&) const;
void SelectItemRange( wxGenericTreeItem *item1, wxGenericTreeItem *item2 );
bool TagAllChildrenUntilLast(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select);
bool TagNextChildren(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select);
void UnselectAllChildren( wxGenericTreeItem *item );
void DrawDropEffect(wxGenericTreeItem *item);
private:
DECLARE_EVENT_TABLE()
DECLARE_DYNAMIC_CLASS(wxGenericTreeCtrl)
};
#if !defined(__WXMSW__) || defined(__WIN16__) || defined(__WXUNIVERSAL__)
/*
* wxTreeCtrl has to be a real class or we have problems with
* the run-time information.
*/
class WXDLLEXPORT wxTreeCtrl: public wxGenericTreeCtrl
{
public:
DECLARE_DYNAMIC_CLASS(wxTreeCtrl)
wxTreeCtrl() {}
wxTreeCtrl(wxWindow *parent, wxWindowID id = -1,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = wxTR_HAS_BUTTONS | wxTR_LINES_AT_ROOT,
const wxValidator &validator = wxDefaultValidator,
const wxString& name = wxTreeCtrlNameStr)
{
Create(parent, id, pos, size, style, validator, name);
}
};
#endif
#endif // wxUSE_TREECTRL
#endif // _GENERIC_TREECTRL_H_