2fff3cd29f
wxSystemThemedControl allows to use the "system theme" (i.e. the theme used by the system applications such as file manager and which can, surprisingly, be different from the default one). Currently it is only implemented for wxMSW and does nothing under the other platforms. Use wxSystemThemedControl for wxDataViewCtrl, wxListCtrl and, optionally, if wxTR_TWIST_BUTTONS style is specified, wxTreeCtrl to give them more native appearance under MSW. Closes #16414.
475 lines
20 KiB
C++
475 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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#include "wx/systhemectrl.h"
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class WXDLLIMPEXP_FWD_CORE wxImageList;
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#ifndef __WXMSW__
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#define wxHAS_GENERIC_TREECTRL
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#endif
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// ----------------------------------------------------------------------------
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// wxTreeCtrlBase
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxTreeCtrlBase : public wxSystemThemedControl<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 wxOVERRIDE { 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 wxOVERRIDE;
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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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#ifdef wxHAS_GENERIC_TREECTRL
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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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#else
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#error "unknown native wxTreeCtrl implementation"
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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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