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/////////////////////////////////////////////////////////////////////////////
// Name: wx/treectrl.h
// Purpose: wxTreeCtrl base header
// Author: Karsten Ballueder
// Modified by:
// Created:
// Copyright: (c) Karsten Ballueder
// RCS-ID: $Id: treectrl.h 49563 2007-10-31 20:46:21Z VZ $
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_TREECTRL_H_BASE_
#define _WX_TREECTRL_H_BASE_
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "wx/defs.h"
#if wxUSE_TREECTRL
#include "wx/control.h"
#include "wx/treebase.h"
#include "wx/textctrl.h" // wxTextCtrl::ms_classinfo used through CLASSINFO macro
class WXDLLIMPEXP_FWD_CORE wxImageList;
// ----------------------------------------------------------------------------
// wxTreeCtrlBase
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxTreeCtrlBase : public wxControl
{
public:
wxTreeCtrlBase()
{
m_imageListNormal =
m_imageListState = NULL;
m_ownsImageListNormal =
m_ownsImageListState = false;
// arbitrary default
m_spacing = 18;
// quick DoGetBestSize calculation
m_quickBestSize = true;
}
virtual ~wxTreeCtrlBase();
// accessors
// ---------
// get the total number of items in the control
virtual unsigned int GetCount() const = 0;
// indent is the number of pixels the children are indented relative to
// the parents position. SetIndent() also redraws the control
// immediately.
virtual unsigned int GetIndent() const = 0;
virtual void SetIndent(unsigned int indent) = 0;
// spacing is the number of pixels between the start and the Text
// (has no effect under wxMSW)
unsigned int GetSpacing() const { return m_spacing; }
void SetSpacing(unsigned int spacing) { m_spacing = 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
// lists to be shared between different controls.
//
// 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 { return m_imageListNormal; }
wxImageList *GetStateImageList() const { return m_imageListState; }
virtual void SetImageList(wxImageList *imageList) = 0;
virtual void SetStateImageList(wxImageList *imageList) = 0;
void AssignImageList(wxImageList *imageList)
{
SetImageList(imageList);
m_ownsImageListNormal = true;
}
void AssignStateImageList(wxImageList *imageList)
{
SetStateImageList(imageList);
m_ownsImageListState = true;
}
// 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.
// accessors
// ---------
// retrieve items label
virtual wxString GetItemText(const wxTreeItemId& item) const = 0;
// get one of the images associated with the item (normal by default)
virtual int GetItemImage(const wxTreeItemId& item,
wxTreeItemIcon which = wxTreeItemIcon_Normal) const = 0;
// get the data associated with the item
virtual wxTreeItemData *GetItemData(const wxTreeItemId& item) const = 0;
// get the item's text colour
virtual wxColour GetItemTextColour(const wxTreeItemId& item) const = 0;
// get the item's background colour
virtual wxColour GetItemBackgroundColour(const wxTreeItemId& item) const = 0;
// get the item's font
virtual wxFont GetItemFont(const wxTreeItemId& item) const = 0;
// modifiers
// ---------
// set items label
virtual void SetItemText(const wxTreeItemId& item, const wxString& text) = 0;
// get one of the images associated with the item (normal by default)
virtual void SetItemImage(const wxTreeItemId& item,
int image,
wxTreeItemIcon which = wxTreeItemIcon_Normal) = 0;
// associate some data with the item
virtual void SetItemData(const wxTreeItemId& item, wxTreeItemData *data) = 0;
// 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.
virtual void SetItemHasChildren(const wxTreeItemId& item,
bool has = true) = 0;
// the item will be shown in bold
virtual void SetItemBold(const wxTreeItemId& item, bool bold = true) = 0;
// the item will be shown with a drop highlight
virtual void SetItemDropHighlight(const wxTreeItemId& item,
bool highlight = true) = 0;
// set the items text colour
virtual void SetItemTextColour(const wxTreeItemId& item,
const wxColour& col) = 0;
// set the items background colour
virtual void SetItemBackgroundColour(const wxTreeItemId& item,
const wxColour& col) = 0;
// set the items font (should be of the same height for all items)
virtual void SetItemFont(const wxTreeItemId& item,
const wxFont& font) = 0;
// item status inquiries
// ---------------------
// is the item visible (it might be outside the view or not expanded)?
virtual bool IsVisible(const wxTreeItemId& item) const = 0;
// does the item has any children?
virtual bool ItemHasChildren(const wxTreeItemId& item) const = 0;
// same as above
bool HasChildren(const wxTreeItemId& item) const
{ return ItemHasChildren(item); }
// is the item expanded (only makes sense if HasChildren())?
virtual bool IsExpanded(const wxTreeItemId& item) const = 0;
// is this item currently selected (the same as has focus)?
virtual bool IsSelected(const wxTreeItemId& item) const = 0;
// is item text in bold font?
virtual bool IsBold(const wxTreeItemId& item) const = 0;
#if wxABI_VERSION >= 20801
// is the control empty?
bool IsEmpty() const;
#endif // wxABI 2.8.1+
// number of children
// ------------------
// if 'recursively' is false, only immediate children count, otherwise
// the returned number is the number of all items in this branch
virtual size_t GetChildrenCount(const wxTreeItemId& item,
bool recursively = true) const = 0;
// navigation
// ----------
// wxTreeItemId.IsOk() will return false if there is no such item
// get the root tree item
virtual wxTreeItemId GetRootItem() const = 0;
// get the item currently selected (may return NULL if no selection)
virtual wxTreeItemId GetSelection() const = 0;
// 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)).
virtual size_t GetSelections(wxArrayTreeItemIds& selections) const = 0;
// get the parent of this item (may return NULL if root)
virtual wxTreeItemId GetItemParent(const wxTreeItemId& item) const = 0;
// 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
virtual wxTreeItemId GetFirstChild(const wxTreeItemId& item,
wxTreeItemIdValue& cookie) const = 0;
// get the next child
virtual wxTreeItemId GetNextChild(const wxTreeItemId& item,
wxTreeItemIdValue& cookie) const = 0;
// get the last child of this item - this method doesn't use cookies
virtual wxTreeItemId GetLastChild(const wxTreeItemId& item) const = 0;
// get the next sibling of this item
virtual wxTreeItemId GetNextSibling(const wxTreeItemId& item) const = 0;
// get the previous sibling
virtual wxTreeItemId GetPrevSibling(const wxTreeItemId& item) const = 0;
// get first visible item
virtual wxTreeItemId GetFirstVisibleItem() const = 0;
// get the next visible item: item must be visible itself!
// see IsVisible() and wxTreeCtrl::GetFirstVisibleItem()
virtual wxTreeItemId GetNextVisible(const wxTreeItemId& item) const = 0;
// get the previous visible item: item must be visible itself!
virtual wxTreeItemId GetPrevVisible(const wxTreeItemId& item) const = 0;
// operations
// ----------
// add the root node to the tree
virtual wxTreeItemId AddRoot(const wxString& text,
int image = -1, int selImage = -1,
wxTreeItemData *data = NULL) = 0;
// insert a new item in as the first child of the parent
wxTreeItemId PrependItem(const wxTreeItemId& parent,
const wxString& text,
int image = -1, int selImage = -1,
wxTreeItemData *data = NULL)
{
return DoInsertItem(parent, 0u, text, image, selImage, data);
}
// insert a new item after a given one
wxTreeItemId InsertItem(const wxTreeItemId& parent,
const wxTreeItemId& idPrevious,
const wxString& text,
int image = -1, int selImage = -1,
wxTreeItemData *data = NULL)
{
return DoInsertAfter(parent, idPrevious, text, image, selImage, data);
}
// insert a new item before the one with the given index
wxTreeItemId InsertItem(const wxTreeItemId& parent,
size_t pos,
const wxString& text,
int image = -1, int selImage = -1,
wxTreeItemData *data = NULL)
{
return DoInsertItem(parent, pos, text, image, selImage, data);
}
// insert a new item in as the last child of the parent
wxTreeItemId AppendItem(const wxTreeItemId& parent,
const wxString& text,
int image = -1, int selImage = -1,
wxTreeItemData *data = NULL)
{
return DoInsertItem(parent, (size_t)-1, text, image, selImage, data);
}
// delete this item and associated data if any
virtual void Delete(const wxTreeItemId& item) = 0;
// delete all children (but don't delete the item itself)
// NB: this won't send wxEVT_COMMAND_TREE_ITEM_DELETED events
virtual void DeleteChildren(const wxTreeItemId& item) = 0;
// delete all items from the tree
// NB: this won't send wxEVT_COMMAND_TREE_ITEM_DELETED events
virtual void DeleteAllItems() = 0;
// expand this item
virtual void Expand(const wxTreeItemId& item) = 0;
// expand the item and all its childs and thats childs
void ExpandAllChildren(const wxTreeItemId& item);
// expand all items
void ExpandAll();
// collapse the item without removing its children
virtual void Collapse(const wxTreeItemId& item) = 0;
#if wxABI_VERSION >= 20801
// collapse the item and all its childs and thats childs
void CollapseAllChildren(const wxTreeItemId& item);
// collapse all items
void CollapseAll();
#endif // wxABI 2.8.1+
// collapse the item and remove all children
virtual void CollapseAndReset(const wxTreeItemId& item) = 0;
// toggles the current state
virtual void Toggle(const wxTreeItemId& item) = 0;
// remove the selection from currently selected item (if any)
virtual void Unselect() = 0;
// unselect all items (only makes sense for multiple selection control)
virtual void UnselectAll() = 0;
// select this item
virtual void SelectItem(const wxTreeItemId& item, bool select = true) = 0;
// unselect this item
void UnselectItem(const wxTreeItemId& item) { SelectItem(item, false); }
// toggle item selection
void ToggleItemSelection(const wxTreeItemId& item)
{
SelectItem(item, !IsSelected(item));
}
// make sure this item is visible (expanding the parent item and/or
// scrolling to this item if necessary)
virtual void EnsureVisible(const wxTreeItemId& item) = 0;
// scroll to this item (but don't expand its parent)
virtual void ScrollTo(const wxTreeItemId& item) = 0;
// 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. textCtrlClass parameter allows you to create an edit
// control of arbitrary user-defined class deriving from wxTextCtrl.
virtual wxTextCtrl *EditLabel(const wxTreeItemId& item,
wxClassInfo* textCtrlClass = CLASSINFO(wxTextCtrl)) = 0;
// returns the same pointer as StartEdit() if the item is being edited,
// NULL otherwise (it's assumed that no more than one item may be
// edited simultaneously)
virtual wxTextCtrl *GetEditControl() const = 0;
// end editing and accept or discard the changes to item label
virtual void EndEditLabel(const wxTreeItemId& item,
bool discardChanges = false) = 0;
// 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)
{
return wxStrcmp(GetItemText(item1), GetItemText(item2));
}
// sort the children of this item using OnCompareItems
//
// NB: this function is not reentrant and not MT-safe (FIXME)!
virtual void SortChildren(const wxTreeItemId& item) = 0;
// items geometry
// --------------
// determine to which item (if any) belongs the given point (the
// coordinates specified are relative to the client area of tree ctrl)
// and, in the second variant, fill the flags parameter with a bitmask
// of wxTREE_HITTEST_xxx constants.
wxTreeItemId HitTest(const wxPoint& point) const
{ int dummy; return DoTreeHitTest(point, dummy); }
wxTreeItemId HitTest(const wxPoint& point, int& flags) const
{ return DoTreeHitTest(point, flags); }
// get the bounding rectangle of the item (or of its label only)
virtual bool GetBoundingRect(const wxTreeItemId& item,
wxRect& rect,
bool textOnly = false) const = 0;
// implementation
// --------------
virtual bool ShouldInheritColours() const { return false; }
// hint whether to calculate best size quickly or accurately
void SetQuickBestSize(bool q) { m_quickBestSize = q; }
bool GetQuickBestSize() const { return m_quickBestSize; }
protected:
virtual wxSize DoGetBestSize() const;
// common part of Append/Prepend/InsertItem()
//
// pos is the position at which to insert the item or (size_t)-1 to append
// it to the end
virtual wxTreeItemId DoInsertItem(const wxTreeItemId& parent,
size_t pos,
const wxString& text,
int image, int selImage,
wxTreeItemData *data) = 0;
// and this function implements overloaded InsertItem() taking wxTreeItemId
// (it can't be called InsertItem() as we'd have virtual function hiding
// problem in derived classes then)
virtual wxTreeItemId DoInsertAfter(const wxTreeItemId& parent,
const wxTreeItemId& idPrevious,
const wxString& text,
int image = -1, int selImage = -1,
wxTreeItemData *data = NULL) = 0;
// real HitTest() implementation: again, can't be called just HitTest()
// because it's overloaded and so the non-virtual overload would be hidden
// (and can't be called DoHitTest() because this is already in wxWindow)
virtual wxTreeItemId DoTreeHitTest(const wxPoint& point,
int& flags) const = 0;
wxImageList *m_imageListNormal, // images for tree elements
*m_imageListState; // special images for app defined states
bool m_ownsImageListNormal,
m_ownsImageListState;
// spacing between left border and the text
unsigned int m_spacing;
// whether full or quick calculation is done in DoGetBestSize
bool m_quickBestSize;
DECLARE_NO_COPY_CLASS(wxTreeCtrlBase)
};
// ----------------------------------------------------------------------------
// include the platform-dependent wxTreeCtrl class
// ----------------------------------------------------------------------------
#if defined(__WXUNIVERSAL__)
#include "wx/generic/treectlg.h"
#elif defined(__WXPALMOS__)
#include "wx/palmos/treectrl.h"
#elif defined(__WXMSW__)
#include "wx/msw/treectrl.h"
#elif defined(__WXMOTIF__)
#include "wx/generic/treectlg.h"
#elif defined(__WXGTK__)
#include "wx/generic/treectlg.h"
#elif defined(__WXMAC__)
#include "wx/generic/treectlg.h"
#elif defined(__WXCOCOA__)
#include "wx/generic/treectlg.h"
#elif defined(__WXPM__)
#include "wx/generic/treectlg.h"
#endif
#endif // wxUSE_TREECTRL
#endif // _WX_TREECTRL_H_BASE_