478 lines
20 KiB
C++
478 lines
20 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/treectrl.h
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// Purpose: wxTreeCtrl base header
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// Author: Karsten Ballueder
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// Modified by:
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// Created:
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// Copyright: (c) Karsten Ballueder
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_TREECTRL_H_BASE_
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#define _WX_TREECTRL_H_BASE_
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "wx/defs.h"
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#if wxUSE_TREECTRL
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#include "wx/control.h"
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#include "wx/treebase.h"
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#include "wx/textctrl.h" // wxTextCtrl::ms_classinfo used through wxCLASSINFO macro
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class WXDLLIMPEXP_FWD_CORE wxImageList;
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// ----------------------------------------------------------------------------
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// wxTreeCtrlBase
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxTreeCtrlBase : public wxControl
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{
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public:
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wxTreeCtrlBase();
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virtual ~wxTreeCtrlBase();
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// accessors
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// ---------
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// get the total number of items in the control
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virtual unsigned int GetCount() const = 0;
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// indent is the number of pixels the children are indented relative to
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// the parents position. SetIndent() also redraws the control
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// immediately.
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virtual unsigned int GetIndent() const = 0;
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virtual void SetIndent(unsigned int indent) = 0;
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// spacing is the number of pixels between the start and the Text
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// (has no effect under wxMSW)
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unsigned int GetSpacing() const { return m_spacing; }
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void SetSpacing(unsigned int spacing) { m_spacing = spacing; }
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// image list: these functions allow to associate an image list with
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// the control and retrieve it. Note that the control does _not_ delete
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// the associated image list when it's deleted in order to allow image
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// lists to be shared between different controls.
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//
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// The normal image list is for the icons which correspond to the
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// normal tree item state (whether it is selected or not).
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// Additionally, the application might choose to show a state icon
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// which corresponds to an app-defined item state (for example,
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// checked/unchecked) which are taken from the state image list.
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wxImageList *GetImageList() const { return m_imageListNormal; }
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wxImageList *GetStateImageList() const { return m_imageListState; }
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virtual void SetImageList(wxImageList *imageList) = 0;
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virtual void SetStateImageList(wxImageList *imageList) = 0;
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void AssignImageList(wxImageList *imageList)
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{
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SetImageList(imageList);
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m_ownsImageListNormal = true;
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}
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void AssignStateImageList(wxImageList *imageList)
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{
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SetStateImageList(imageList);
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m_ownsImageListState = true;
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}
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// Functions to work with tree ctrl items. Unfortunately, they can _not_ be
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// member functions of wxTreeItem because they must know the tree the item
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// belongs to for Windows implementation and storing the pointer to
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// wxTreeCtrl in each wxTreeItem is just too much waste.
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// accessors
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// ---------
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// retrieve items label
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virtual wxString GetItemText(const wxTreeItemId& item) const = 0;
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// get one of the images associated with the item (normal by default)
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virtual int GetItemImage(const wxTreeItemId& item,
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wxTreeItemIcon which = wxTreeItemIcon_Normal) const = 0;
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// get the data associated with the item
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virtual wxTreeItemData *GetItemData(const wxTreeItemId& item) const = 0;
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// get the item's text colour
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virtual wxColour GetItemTextColour(const wxTreeItemId& item) const = 0;
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// get the item's background colour
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virtual wxColour GetItemBackgroundColour(const wxTreeItemId& item) const = 0;
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// get the item's font
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virtual wxFont GetItemFont(const wxTreeItemId& item) const = 0;
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// get the items state
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int GetItemState(const wxTreeItemId& item) const
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{
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return DoGetItemState(item);
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}
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// modifiers
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// ---------
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// set items label
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virtual void SetItemText(const wxTreeItemId& item, const wxString& text) = 0;
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// set one of the images associated with the item (normal by default)
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virtual void SetItemImage(const wxTreeItemId& item,
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int image,
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wxTreeItemIcon which = wxTreeItemIcon_Normal) = 0;
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// associate some data with the item
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virtual void SetItemData(const wxTreeItemId& item, wxTreeItemData *data) = 0;
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// force appearance of [+] button near the item. This is useful to
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// allow the user to expand the items which don't have any children now
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// - but instead add them only when needed, thus minimizing memory
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// usage and loading time.
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virtual void SetItemHasChildren(const wxTreeItemId& item,
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bool has = true) = 0;
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// the item will be shown in bold
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virtual void SetItemBold(const wxTreeItemId& item, bool bold = true) = 0;
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// the item will be shown with a drop highlight
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virtual void SetItemDropHighlight(const wxTreeItemId& item,
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bool highlight = true) = 0;
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// set the items text colour
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virtual void SetItemTextColour(const wxTreeItemId& item,
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const wxColour& col) = 0;
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// set the items background colour
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virtual void SetItemBackgroundColour(const wxTreeItemId& item,
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const wxColour& col) = 0;
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// set the items font (should be of the same height for all items)
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virtual void SetItemFont(const wxTreeItemId& item,
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const wxFont& font) = 0;
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// set the items state (special state values: wxTREE_ITEMSTATE_NONE/NEXT/PREV)
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void SetItemState(const wxTreeItemId& item, int state);
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// item status inquiries
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// ---------------------
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// is the item visible (it might be outside the view or not expanded)?
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virtual bool IsVisible(const wxTreeItemId& item) const = 0;
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// does the item has any children?
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virtual bool ItemHasChildren(const wxTreeItemId& item) const = 0;
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// same as above
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bool HasChildren(const wxTreeItemId& item) const
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{ return ItemHasChildren(item); }
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// is the item expanded (only makes sense if HasChildren())?
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virtual bool IsExpanded(const wxTreeItemId& item) const = 0;
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// is this item currently selected (the same as has focus)?
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virtual bool IsSelected(const wxTreeItemId& item) const = 0;
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// is item text in bold font?
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virtual bool IsBold(const wxTreeItemId& item) const = 0;
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// is the control empty?
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bool IsEmpty() const;
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// number of children
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// ------------------
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// if 'recursively' is false, only immediate children count, otherwise
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// the returned number is the number of all items in this branch
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virtual size_t GetChildrenCount(const wxTreeItemId& item,
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bool recursively = true) const = 0;
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// navigation
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// ----------
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// wxTreeItemId.IsOk() will return false if there is no such item
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// get the root tree item
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virtual wxTreeItemId GetRootItem() const = 0;
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// get the item currently selected (may return NULL if no selection)
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virtual wxTreeItemId GetSelection() const = 0;
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// get the items currently selected, return the number of such item
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//
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// NB: this operation is expensive and can take a long time for a
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// control with a lot of items (~ O(number of items)).
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virtual size_t GetSelections(wxArrayTreeItemIds& selections) const = 0;
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// get the last item to be clicked when the control has wxTR_MULTIPLE
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// equivalent to GetSelection() if not wxTR_MULTIPLE
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virtual wxTreeItemId GetFocusedItem() const = 0;
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// Clears the currently focused item
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virtual void ClearFocusedItem() = 0;
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// Sets the currently focused item. Item should be valid
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virtual void SetFocusedItem(const wxTreeItemId& item) = 0;
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// get the parent of this item (may return NULL if root)
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virtual wxTreeItemId GetItemParent(const wxTreeItemId& item) const = 0;
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// for this enumeration function you must pass in a "cookie" parameter
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// which is opaque for the application but is necessary for the library
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// to make these functions reentrant (i.e. allow more than one
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// enumeration on one and the same object simultaneously). Of course,
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// the "cookie" passed to GetFirstChild() and GetNextChild() should be
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// the same!
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// get the first child of this item
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virtual wxTreeItemId GetFirstChild(const wxTreeItemId& item,
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wxTreeItemIdValue& cookie) const = 0;
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// get the next child
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virtual wxTreeItemId GetNextChild(const wxTreeItemId& item,
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wxTreeItemIdValue& cookie) const = 0;
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// get the last child of this item - this method doesn't use cookies
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virtual wxTreeItemId GetLastChild(const wxTreeItemId& item) const = 0;
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// get the next sibling of this item
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virtual wxTreeItemId GetNextSibling(const wxTreeItemId& item) const = 0;
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// get the previous sibling
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virtual wxTreeItemId GetPrevSibling(const wxTreeItemId& item) const = 0;
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// get first visible item
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virtual wxTreeItemId GetFirstVisibleItem() const = 0;
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// get the next visible item: item must be visible itself!
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// see IsVisible() and wxTreeCtrl::GetFirstVisibleItem()
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virtual wxTreeItemId GetNextVisible(const wxTreeItemId& item) const = 0;
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// get the previous visible item: item must be visible itself!
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virtual wxTreeItemId GetPrevVisible(const wxTreeItemId& item) const = 0;
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// operations
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// ----------
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// add the root node to the tree
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virtual wxTreeItemId AddRoot(const wxString& text,
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int image = -1, int selImage = -1,
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wxTreeItemData *data = NULL) = 0;
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// insert a new item in as the first child of the parent
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wxTreeItemId PrependItem(const wxTreeItemId& parent,
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const wxString& text,
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int image = -1, int selImage = -1,
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wxTreeItemData *data = NULL)
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{
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return DoInsertItem(parent, 0u, text, image, selImage, data);
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}
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// insert a new item after a given one
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wxTreeItemId InsertItem(const wxTreeItemId& parent,
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const wxTreeItemId& idPrevious,
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const wxString& text,
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int image = -1, int selImage = -1,
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wxTreeItemData *data = NULL)
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{
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return DoInsertAfter(parent, idPrevious, text, image, selImage, data);
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}
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// insert a new item before the one with the given index
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wxTreeItemId InsertItem(const wxTreeItemId& parent,
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size_t pos,
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const wxString& text,
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int image = -1, int selImage = -1,
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wxTreeItemData *data = NULL)
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{
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return DoInsertItem(parent, pos, text, image, selImage, data);
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}
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// insert a new item in as the last child of the parent
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wxTreeItemId AppendItem(const wxTreeItemId& parent,
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const wxString& text,
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int image = -1, int selImage = -1,
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wxTreeItemData *data = NULL)
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{
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return DoInsertItem(parent, (size_t)-1, text, image, selImage, data);
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}
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// delete this item and associated data if any
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virtual void Delete(const wxTreeItemId& item) = 0;
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// delete all children (but don't delete the item itself)
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// NB: this won't send wxEVT_TREE_ITEM_DELETED events
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virtual void DeleteChildren(const wxTreeItemId& item) = 0;
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// delete all items from the tree
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// NB: this won't send wxEVT_TREE_ITEM_DELETED events
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virtual void DeleteAllItems() = 0;
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// expand this item
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virtual void Expand(const wxTreeItemId& item) = 0;
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// expand the item and all its children recursively
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void ExpandAllChildren(const wxTreeItemId& item);
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// expand all items
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void ExpandAll();
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// collapse the item without removing its children
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virtual void Collapse(const wxTreeItemId& item) = 0;
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// collapse the item and all its children
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void CollapseAllChildren(const wxTreeItemId& item);
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// collapse all items
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void CollapseAll();
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// collapse the item and remove all children
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virtual void CollapseAndReset(const wxTreeItemId& item) = 0;
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// toggles the current state
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virtual void Toggle(const wxTreeItemId& item) = 0;
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// remove the selection from currently selected item (if any)
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virtual void Unselect() = 0;
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// unselect all items (only makes sense for multiple selection control)
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virtual void UnselectAll() = 0;
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// select this item
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virtual void SelectItem(const wxTreeItemId& item, bool select = true) = 0;
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// selects all (direct) children for given parent (only for
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// multiselection controls)
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virtual void SelectChildren(const wxTreeItemId& parent) = 0;
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// unselect this item
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void UnselectItem(const wxTreeItemId& item) { SelectItem(item, false); }
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// toggle item selection
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void ToggleItemSelection(const wxTreeItemId& item)
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{
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SelectItem(item, !IsSelected(item));
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}
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// make sure this item is visible (expanding the parent item and/or
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// scrolling to this item if necessary)
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virtual void EnsureVisible(const wxTreeItemId& item) = 0;
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// scroll to this item (but don't expand its parent)
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virtual void ScrollTo(const wxTreeItemId& item) = 0;
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// start editing the item label: this (temporarily) replaces the item
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// with a one line edit control. The item will be selected if it hadn't
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// been before. textCtrlClass parameter allows you to create an edit
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// control of arbitrary user-defined class deriving from wxTextCtrl.
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virtual wxTextCtrl *EditLabel(const wxTreeItemId& item,
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wxClassInfo* textCtrlClass = wxCLASSINFO(wxTextCtrl)) = 0;
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// returns the same pointer as StartEdit() if the item is being edited,
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// NULL otherwise (it's assumed that no more than one item may be
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// edited simultaneously)
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virtual wxTextCtrl *GetEditControl() const = 0;
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// end editing and accept or discard the changes to item label
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virtual void EndEditLabel(const wxTreeItemId& item,
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bool discardChanges = false) = 0;
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// Enable or disable beep when incremental match doesn't find any item.
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// Only implemented in the generic version currently.
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virtual void EnableBellOnNoMatch(bool WXUNUSED(on) = true) { }
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// sorting
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// -------
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// this function is called to compare 2 items and should return -1, 0
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// or +1 if the first item is less than, equal to or greater than the
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// second one. The base class version performs alphabetic comparaison
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// of item labels (GetText)
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virtual int OnCompareItems(const wxTreeItemId& item1,
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const wxTreeItemId& item2)
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{
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return wxStrcmp(GetItemText(item1), GetItemText(item2));
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}
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// sort the children of this item using OnCompareItems
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//
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// NB: this function is not reentrant and not MT-safe (FIXME)!
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virtual void SortChildren(const wxTreeItemId& item) = 0;
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// items geometry
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// --------------
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// determine to which item (if any) belongs the given point (the
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// coordinates specified are relative to the client area of tree ctrl)
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// and, in the second variant, fill the flags parameter with a bitmask
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// of wxTREE_HITTEST_xxx constants.
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wxTreeItemId HitTest(const wxPoint& point) const
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{ int dummy; return DoTreeHitTest(point, dummy); }
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wxTreeItemId HitTest(const wxPoint& point, int& flags) const
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{ return DoTreeHitTest(point, flags); }
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// get the bounding rectangle of the item (or of its label only)
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virtual bool GetBoundingRect(const wxTreeItemId& item,
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wxRect& rect,
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bool textOnly = false) const = 0;
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// implementation
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// --------------
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virtual bool ShouldInheritColours() const { return false; }
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// hint whether to calculate best size quickly or accurately
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void SetQuickBestSize(bool q) { m_quickBestSize = q; }
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bool GetQuickBestSize() const { return m_quickBestSize; }
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protected:
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virtual wxSize DoGetBestSize() const;
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// common part of Get/SetItemState()
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virtual int DoGetItemState(const wxTreeItemId& item) const = 0;
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virtual void DoSetItemState(const wxTreeItemId& item, int state) = 0;
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// common part of Append/Prepend/InsertItem()
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//
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// pos is the position at which to insert the item or (size_t)-1 to append
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// it to the end
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virtual wxTreeItemId DoInsertItem(const wxTreeItemId& parent,
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size_t pos,
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const wxString& text,
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int image, int selImage,
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wxTreeItemData *data) = 0;
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// and this function implements overloaded InsertItem() taking wxTreeItemId
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// (it can't be called InsertItem() as we'd have virtual function hiding
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// problem in derived classes then)
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virtual wxTreeItemId DoInsertAfter(const wxTreeItemId& parent,
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const wxTreeItemId& idPrevious,
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const wxString& text,
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int image = -1, int selImage = -1,
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wxTreeItemData *data = NULL) = 0;
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// real HitTest() implementation: again, can't be called just HitTest()
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// because it's overloaded and so the non-virtual overload would be hidden
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// (and can't be called DoHitTest() because this is already in wxWindow)
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virtual wxTreeItemId DoTreeHitTest(const wxPoint& point,
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int& flags) const = 0;
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wxImageList *m_imageListNormal, // images for tree elements
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*m_imageListState; // special images for app defined states
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bool m_ownsImageListNormal,
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m_ownsImageListState;
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// spacing between left border and the text
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unsigned int m_spacing;
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// whether full or quick calculation is done in DoGetBestSize
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bool m_quickBestSize;
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private:
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// Intercept Escape and Return keys to ensure that our in-place edit
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// control always gets them before they're used for dialog navigation or
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// anything else.
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void OnCharHook(wxKeyEvent& event);
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wxDECLARE_NO_COPY_CLASS(wxTreeCtrlBase);
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};
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// ----------------------------------------------------------------------------
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// include the platform-dependent wxTreeCtrl class
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// ----------------------------------------------------------------------------
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#if defined(__WXUNIVERSAL__)
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#include "wx/generic/treectlg.h"
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#elif defined(__WXMSW__)
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#include "wx/msw/treectrl.h"
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#elif defined(__WXMOTIF__)
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#include "wx/generic/treectlg.h"
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#elif defined(__WXGTK__)
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#include "wx/generic/treectlg.h"
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#elif defined(__WXMAC__)
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#include "wx/generic/treectlg.h"
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#elif defined(__WXCOCOA__)
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#include "wx/generic/treectlg.h"
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#elif defined(__WXPM__)
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#include "wx/generic/treectlg.h"
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#endif
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#endif // wxUSE_TREECTRL
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#endif // _WX_TREECTRL_H_BASE_
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