dd23c25cde
Benjamin I. Williams Currently there is no way of receiving notification that a user cancelled an edit operation on a wxTreeCtrl tree node label. This patch adds a method "IsEditCancelled" to the wxTreeEvent class. During an EVT_TREE_END_LABEL_EDIT event, the programmer can now determine whether or not the edit operation was cancelled by the user (by pressing <ESC>). This patch provides this implementation for both wxMSW's wxTreeCtrl and the wxGenericTreeCtrl. Both situations have been tested and work well. The patch is not very invasive, and is much smaller than I had expected. Please see the relevent discussion on the wx-dev list for more details. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16995 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
474 lines
19 KiB
C++
474 lines
19 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/generic/treectlg.h
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// Purpose: wxTreeCtrl class
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// Author: Robert Roebling
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// Modified by:
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// Created: 01/02/97
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// RCS-ID: $Id$
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// Copyright: (c) 1997,1998 Robert Roebling
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// Licence: wxWindows license
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _GENERIC_TREECTRL_H_
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#define _GENERIC_TREECTRL_H_
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#if defined(__GNUG__) && !defined(__APPLE__)
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#pragma interface "treectlg.h"
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#endif
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#if wxUSE_TREECTRL
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#include "wx/scrolwin.h"
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#include "wx/pen.h"
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#include "wx/imaglist.h"
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// -----------------------------------------------------------------------------
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// forward declaration
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// -----------------------------------------------------------------------------
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class WXDLLEXPORT wxGenericTreeItem;
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class WXDLLEXPORT wxTreeItemData;
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class WXDLLEXPORT wxTreeRenameTimer;
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class WXDLLEXPORT wxTreeFindTimer;
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class WXDLLEXPORT wxTreeTextCtrl;
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// -----------------------------------------------------------------------------
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// wxGenericTreeCtrl - the tree control
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// -----------------------------------------------------------------------------
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class WXDLLEXPORT wxGenericTreeCtrl : public wxScrolledWindow
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{
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public:
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// creation
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// --------
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wxGenericTreeCtrl() { Init(); }
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wxGenericTreeCtrl(wxWindow *parent, wxWindowID id = -1,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxTR_DEFAULT_STYLE,
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const wxValidator &validator = wxDefaultValidator,
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const wxString& name = wxTreeCtrlNameStr)
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{
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Init();
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Create(parent, id, pos, size, style, validator, name);
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}
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virtual ~wxGenericTreeCtrl();
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bool Create(wxWindow *parent, wxWindowID id = -1,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxTR_DEFAULT_STYLE,
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const wxValidator &validator = wxDefaultValidator,
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const wxString& name = wxTreeCtrlNameStr);
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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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size_t GetCount() const;
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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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unsigned int GetIndent() const { return m_indent; }
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void SetIndent(unsigned int indent);
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// spacing is the number of pixels between the start and the Text
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unsigned int GetSpacing() const { return m_spacing; }
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void SetSpacing(unsigned int 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 when assigned with
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// SetImageList, 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. If you use
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// AssignImageList, the control _does_ delete the image list.
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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;
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wxImageList *GetStateImageList() const;
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wxImageList *GetButtonsImageList() const;
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void SetImageList(wxImageList *imageList);
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void SetStateImageList(wxImageList *imageList);
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void SetButtonsImageList(wxImageList *imageList);
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void AssignImageList(wxImageList *imageList);
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void AssignStateImageList(wxImageList *imageList);
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void AssignButtonsImageList(wxImageList *imageList);
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// Functions to work with tree ctrl items.
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// accessors
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// ---------
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// retrieve item's label
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wxString GetItemText(const wxTreeItemId& item) const;
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// get one of the images associated with the item (normal by default)
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int GetItemImage(const wxTreeItemId& item,
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wxTreeItemIcon which = wxTreeItemIcon_Normal) const;
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// get the data associated with the item
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wxTreeItemData *GetItemData(const wxTreeItemId& item) const;
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// modifiers
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// ---------
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// set item's label
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void SetItemText(const wxTreeItemId& item, const wxString& text);
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// get one of the images associated with the item (normal by default)
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void SetItemImage(const wxTreeItemId& item, int image,
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wxTreeItemIcon which = wxTreeItemIcon_Normal);
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// associate some data with the item
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void SetItemData(const wxTreeItemId& item, wxTreeItemData *data);
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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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void SetItemHasChildren(const wxTreeItemId& item, bool has = TRUE);
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// the item will be shown in bold
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void SetItemBold(const wxTreeItemId& item, bool bold = TRUE);
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// set the item's text colour
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void SetItemTextColour(const wxTreeItemId& item, const wxColour& col);
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// set the item's background colour
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void SetItemBackgroundColour(const wxTreeItemId& item, const wxColour& col);
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// set the item's font (should be of the same height for all items)
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void SetItemFont(const wxTreeItemId& item, const wxFont& font);
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// set the window font
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virtual bool SetFont( const wxFont &font );
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// set the styles. No need to specify a GetWindowStyle here since
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// the base wxWindow member function will do it for us
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void SetWindowStyle(const long styles);
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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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bool IsVisible(const wxTreeItemId& item) const;
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// does the item has any children?
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bool HasChildren(const wxTreeItemId& item) const
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{ return ItemHasChildren(item); }
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bool ItemHasChildren(const wxTreeItemId& item) const;
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// is the item expanded (only makes sense if HasChildren())?
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bool IsExpanded(const wxTreeItemId& item) const;
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// is this item currently selected (the same as has focus)?
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bool IsSelected(const wxTreeItemId& item) const;
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// is item text in bold font?
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bool IsBold(const wxTreeItemId& item) const;
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// does the layout include space for a button?
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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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size_t GetChildrenCount(const wxTreeItemId& item, bool recursively = TRUE);
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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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wxTreeItemId GetRootItem() const { return m_anchor; }
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// get the item currently selected (may return NULL if no selection)
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wxTreeItemId GetSelection() const { return m_current; }
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// get the items currently selected, return the number of such item
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size_t GetSelections(wxArrayTreeItemIds&) const;
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// get the parent of this item (may return NULL if root)
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wxTreeItemId GetParent(const wxTreeItemId& item) const;
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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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wxTreeItemId GetFirstChild(const wxTreeItemId& item, long& cookie) const;
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// get the next child
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wxTreeItemId GetNextChild(const wxTreeItemId& item, long& cookie) const;
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// get the last child of this item - this method doesn't use cookies
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wxTreeItemId GetLastChild(const wxTreeItemId& item) const;
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// get the next sibling of this item
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wxTreeItemId GetNextSibling(const wxTreeItemId& item) const;
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// get the previous sibling
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wxTreeItemId GetPrevSibling(const wxTreeItemId& item) const;
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// get first visible item
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wxTreeItemId GetFirstVisibleItem() const;
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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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wxTreeItemId GetNextVisible(const wxTreeItemId& item) const;
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// get the previous visible item: item must be visible itself!
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wxTreeItemId GetPrevVisible(const wxTreeItemId& item) const;
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// Only for internal use right now, but should probably be public
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wxTreeItemId GetNext(const wxTreeItemId& item) const;
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// operations
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// ----------
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// add the root node to the tree
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wxTreeItemId AddRoot(const wxString& text,
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int image = -1, int selectedImage = -1,
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wxTreeItemData *data = NULL);
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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 selectedImage = -1,
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wxTreeItemData *data = NULL);
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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 selectedImage = -1,
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wxTreeItemData *data = NULL);
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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 index,
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const wxString& text,
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int image = -1, int selectedImage = -1,
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wxTreeItemData *data = NULL);
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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 selectedImage = -1,
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wxTreeItemData *data = NULL);
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// delete this item and associated data if any
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void Delete(const wxTreeItemId& item);
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// delete all children (but don't delete the item itself)
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// NB: this won't send wxEVT_COMMAND_TREE_ITEM_DELETED events
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void DeleteChildren(const wxTreeItemId& item);
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// delete all items from the tree
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// NB: this won't send wxEVT_COMMAND_TREE_ITEM_DELETED events
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void DeleteAllItems();
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// expand this item
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void Expand(const wxTreeItemId& item);
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// expand this item and all subitems recursively
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void ExpandAll(const wxTreeItemId& item);
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// collapse the item without removing its children
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void Collapse(const wxTreeItemId& item);
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// collapse the item and remove all children
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void CollapseAndReset(const wxTreeItemId& item);
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// toggles the current state
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void Toggle(const wxTreeItemId& item);
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// remove the selection from currently selected item (if any)
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void Unselect();
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void UnselectAll();
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// select this item
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void SelectItem(const wxTreeItemId& item, bool unselect_others=TRUE, bool extended_select=FALSE);
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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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void EnsureVisible(const wxTreeItemId& item);
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// scroll to this item (but don't expand its parent)
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void ScrollTo(const wxTreeItemId& item);
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void AdjustMyScrollbars();
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// The first function is more portable (because easier to implement
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// on other platforms), but the second one returns some extra info.
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wxTreeItemId HitTest(const wxPoint& point)
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{ int dummy; return HitTest(point, dummy); }
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wxTreeItemId HitTest(const wxPoint& point, int& flags);
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// get the bounding rectangle of the item (or of its label only)
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bool GetBoundingRect(const wxTreeItemId& item,
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wxRect& rect,
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bool textOnly = FALSE) const;
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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.
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void EditLabel( const wxTreeItemId& item ) { Edit( item ); }
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void Edit( const wxTreeItemId& item );
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// sorting
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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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// 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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void SortChildren(const wxTreeItemId& item);
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// deprecated functions: use Set/GetItemImage directly
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// get the selected item image
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int GetItemSelectedImage(const wxTreeItemId& item) const
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{ return GetItemImage(item, wxTreeItemIcon_Selected); }
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// set the selected item image
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void SetItemSelectedImage(const wxTreeItemId& item, int image)
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{ SetItemImage(item, image, wxTreeItemIcon_Selected); }
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// implementation only from now on
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// overridden base class virtuals
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virtual bool SetBackgroundColour(const wxColour& colour);
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virtual bool SetForegroundColour(const wxColour& colour);
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// callbacks
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void OnPaint( wxPaintEvent &event );
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void OnSetFocus( wxFocusEvent &event );
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void OnKillFocus( wxFocusEvent &event );
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void OnChar( wxKeyEvent &event );
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void OnMouse( wxMouseEvent &event );
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void OnIdle( wxIdleEvent &event );
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// implementation helpers
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protected:
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friend class wxGenericTreeItem;
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friend class wxTreeRenameTimer;
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friend class wxTreeFindTimer;
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friend class wxTreeTextCtrl;
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wxFont m_normalFont;
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wxFont m_boldFont;
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wxGenericTreeItem *m_anchor;
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wxGenericTreeItem *m_current,
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*m_key_current;
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unsigned short m_indent;
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unsigned short m_spacing;
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int m_lineHeight;
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wxPen m_dottedPen;
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wxBrush *m_hilightBrush,
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*m_hilightUnfocusedBrush;
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bool m_hasFocus;
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bool m_dirty;
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bool m_ownsImageListNormal,
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m_ownsImageListState,
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m_ownsImageListButtons;
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bool m_isDragging; // true between BEGIN/END drag events
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bool m_lastOnSame; // last click on the same item as prev
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wxImageList *m_imageListNormal,
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*m_imageListState,
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*m_imageListButtons;
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int m_dragCount;
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wxPoint m_dragStart;
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wxGenericTreeItem *m_dropTarget;
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wxCursor m_oldCursor; // cursor is changed while dragging
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wxGenericTreeItem *m_oldSelection;
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wxTimer *m_renameTimer;
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wxBitmap *m_arrowRight,
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*m_arrowDown;
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// incremental search data
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wxString m_findPrefix;
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wxTimer *m_findTimer;
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// the common part of all ctors
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void Init();
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// misc helpers
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void SendDeleteEvent(wxGenericTreeItem *itemBeingDeleted);
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void DrawBorder(const wxTreeItemId& item);
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void DrawLine(const wxTreeItemId& item, bool below);
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void DrawDropEffect(wxGenericTreeItem *item);
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wxTreeItemId DoInsertItem(const wxTreeItemId& parent,
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size_t previous,
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const wxString& text,
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int image, int selectedImage,
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wxTreeItemData *data);
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// find the first item starting with the given prefix after the given item
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wxTreeItemId FindItem(const wxTreeItemId& id, const wxString& prefix) const;
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bool HasButtons(void) const
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{ return (m_imageListButtons != NULL)
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|| HasFlag(wxTR_TWIST_BUTTONS|wxTR_HAS_BUTTONS); }
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void CalculateLineHeight();
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int GetLineHeight(wxGenericTreeItem *item) const;
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void PaintLevel( wxGenericTreeItem *item, wxDC& dc, int level, int &y );
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void PaintItem( wxGenericTreeItem *item, wxDC& dc);
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void CalculateLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y );
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void CalculatePositions();
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void CalculateSize( wxGenericTreeItem *item, wxDC &dc );
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void RefreshSubtree( wxGenericTreeItem *item );
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void RefreshLine( wxGenericTreeItem *item );
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// redraw all selected items
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void RefreshSelected();
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// RefreshSelected() recursive helper
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void RefreshSelectedUnder(wxGenericTreeItem *item);
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void OnRenameTimer();
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bool OnRenameAccept(wxGenericTreeItem *item, const wxString& value);
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void OnRenameCancelled(wxGenericTreeItem *item);
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void FillArray(wxGenericTreeItem*, wxArrayTreeItemIds&) const;
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void SelectItemRange( wxGenericTreeItem *item1, wxGenericTreeItem *item2 );
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bool TagAllChildrenUntilLast(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select);
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bool TagNextChildren(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select);
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void UnselectAllChildren( wxGenericTreeItem *item );
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private:
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DECLARE_EVENT_TABLE()
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DECLARE_DYNAMIC_CLASS(wxGenericTreeCtrl)
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};
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#if !defined(__WXMSW__) || defined(__WIN16__) || defined(__WXUNIVERSAL__)
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/*
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* wxTreeCtrl has to be a real class or we have problems with
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* the run-time information.
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*/
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class WXDLLEXPORT wxTreeCtrl: public wxGenericTreeCtrl
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{
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DECLARE_DYNAMIC_CLASS(wxTreeCtrl)
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public:
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wxTreeCtrl() {}
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wxTreeCtrl(wxWindow *parent, wxWindowID id = -1,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxTR_DEFAULT_STYLE,
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const wxValidator &validator = wxDefaultValidator,
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const wxString& name = wxTreeCtrlNameStr)
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: wxGenericTreeCtrl(parent, id, pos, size, style, validator, name)
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{
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}
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};
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#endif // !__WXMSW__ || __WIN16__ || __WXUNIVERSAL__
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#endif // wxUSE_TREECTRL
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#endif // _GENERIC_TREECTRL_H_
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