68c124a168
etc. and return it from GetItemCount to save so many calls to ListView_GetItemCount. 2. If EVT_LIST_DELETE_ALL_ITEMS was not handled then the post-processing code to prevent LVN_DELETEITEM messages was not getting executed. Changed it so the post processing always happens. 3. It's possible with some versions of comctl32 that garbage values can be passed in nmLV->lParam so don't try to get the internal item data pointer from it. This should close bug# 659939 4. Added FreeAllInternalData from DeleteAllItems, (part of patch #672065) and also guard against processing LVN_CHANG* messages while freeing the internal data. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@19021 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
410 lines
14 KiB
C++
410 lines
14 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/msw/listctrl.h
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// Purpose: wxListCtrl class
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// Author: Julian Smart
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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) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_LISTCTRL_H_
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#define _WX_LISTCTRL_H_
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#ifdef __GNUG__
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#pragma interface "listctrl.h"
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#endif
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#if wxUSE_LISTCTRL
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#include "wx/control.h"
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#include "wx/event.h"
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#include "wx/hash.h"
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#include "wx/textctrl.h"
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class WXDLLEXPORT wxImageList;
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/*
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The wxListCtrl can show lists of items in four different modes:
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wxLC_LIST: multicolumn list view, with optional small icons (icons could be
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optional for some platforms). Columns are computed automatically,
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i.e. you don't set columns as in wxLC_REPORT. In other words,
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the list wraps, unlike a wxListBox.
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wxLC_REPORT: single or multicolumn report view (with optional header)
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wxLC_ICON: large icon view, with optional labels
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wxLC_SMALL_ICON: small icon view, with optional labels
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You can change the style dynamically, either with SetSingleStyle or
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SetWindowStyleFlag.
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Further window styles:
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wxLC_ALIGN_TOP icons align to the top (default)
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wxLC_ALIGN_LEFT icons align to the left
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wxLC_AUTOARRANGE icons arrange themselves
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wxLC_USER_TEXT the app provides label text on demand, except for column headers
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wxLC_EDIT_LABELS labels are editable: app will be notified.
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wxLC_NO_HEADER no header in report mode
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wxLC_NO_SORT_HEADER can't click on header
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wxLC_SINGLE_SEL single selection
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wxLC_SORT_ASCENDING sort ascending (must still supply a comparison callback in SortItems)
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wxLC_SORT_DESCENDING sort descending (ditto)
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Items are referred to by their index (position in the list starting from zero).
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Label text is supplied via insertion/setting functions and is stored by the
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control, unless the wxLC_USER_TEXT style has been specified, in which case
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the app will be notified when text is required (see sample).
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Images are dealt with by (optionally) associating 3 image lists with the control.
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Zero-based indexes into these image lists indicate which image is to be used for
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which item. Each image in an image list can contain a mask, and can be made out
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of either a bitmap, two bitmaps or an icon. See ImagList.h for more details.
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Notifications are passed via the wxWindows 2.0 event system, or using virtual
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functions in wxWindows 1.66.
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See the sample wxListCtrl app for API usage.
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TODO:
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- addition of further convenience functions
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to avoid use of wxListItem in some functions
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- state/overlay images: probably not needed.
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- in Win95, you can be called back to supply other information
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besides text, such as state information. This saves no memory
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and is probably superfluous to requirements.
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- testing of whole API, extending current sample.
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*/
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class WXDLLEXPORT wxListCtrl: public wxControl
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{
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public:
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/*
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* Public interface
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*/
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wxListCtrl() { Init(); }
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wxListCtrl(wxWindow *parent,
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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 = wxLC_ICON,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = _T("wxListCtrl"))
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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 ~wxListCtrl();
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bool Create(wxWindow *parent,
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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 = wxLC_ICON,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = _T("wxListCtrl"));
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// Attributes
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////////////////////////////////////////////////////////////////////////////
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// Set the control colours
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bool SetForegroundColour(const wxColour& col);
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bool SetBackgroundColour(const wxColour& col);
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// Gets information about this column
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bool GetColumn(int col, wxListItem& item) const;
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// Sets information about this column
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bool SetColumn(int col, wxListItem& item) ;
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// Gets the column width
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int GetColumnWidth(int col) const;
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// Sets the column width
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bool SetColumnWidth(int col, int width) ;
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// Gets the number of items that can fit vertically in the
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// visible area of the list control (list or report view)
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// or the total number of items in the list control (icon
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// or small icon view)
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int GetCountPerPage() const;
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// Gets the edit control for editing labels.
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wxTextCtrl* GetEditControl() const;
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// Gets information about the item
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bool GetItem(wxListItem& info) const ;
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// Sets information about the item
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bool SetItem(wxListItem& info) ;
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// Sets a string field at a particular column
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long SetItem(long index, int col, const wxString& label, int imageId = -1);
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// Gets the item state
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int GetItemState(long item, long stateMask) const ;
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// Sets the item state
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bool SetItemState(long item, long state, long stateMask) ;
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// Sets the item image
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bool SetItemImage(long item, int image, int selImage) ;
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// Gets the item text
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wxString GetItemText(long item) const ;
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// Sets the item text
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void SetItemText(long item, const wxString& str) ;
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// Gets the item data
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long GetItemData(long item) const ;
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// Sets the item data
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bool SetItemData(long item, long data) ;
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// Gets the item rectangle
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bool GetItemRect(long item, wxRect& rect, int code = wxLIST_RECT_BOUNDS) const ;
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// Gets the item position
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bool GetItemPosition(long item, wxPoint& pos) const ;
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// Sets the item position
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bool SetItemPosition(long item, const wxPoint& pos) ;
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// Gets the number of items in the list control
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int GetItemCount() const;
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// Gets the number of columns in the list control
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int GetColumnCount() const { return m_colCount; }
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// Retrieves the spacing between icons in pixels.
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// If small is TRUE, gets the spacing for the small icon
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// view, otherwise the large icon view.
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int GetItemSpacing(bool isSmall) const;
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// Foreground colour of an item.
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void SetItemTextColour( long item, const wxColour& col);
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wxColour GetItemTextColour( long item ) const;
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// Background colour of an item.
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void SetItemBackgroundColour( long item, const wxColour &col);
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wxColour GetItemBackgroundColour( long item ) const;
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// Gets the number of selected items in the list control
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int GetSelectedItemCount() const;
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// Gets the text colour of the listview
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wxColour GetTextColour() const;
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// Sets the text colour of the listview
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void SetTextColour(const wxColour& col);
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// Gets the index of the topmost visible item when in
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// list or report view
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long GetTopItem() const ;
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// Add or remove a single window style
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void SetSingleStyle(long style, bool add = TRUE) ;
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// Set the whole window style
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void SetWindowStyleFlag(long style) ;
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// Searches for an item, starting from 'item'.
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// item can be -1 to find the first item that matches the
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// specified flags.
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// Returns the item or -1 if unsuccessful.
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long GetNextItem(long item, int geometry = wxLIST_NEXT_ALL, int state = wxLIST_STATE_DONTCARE) const ;
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// Gets one of the three image lists
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wxImageList *GetImageList(int which) const ;
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// Sets the image list
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// N.B. There's a quirk in the Win95 list view implementation.
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// If in wxLC_LIST mode, it'll *still* display images by the labels if
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// there's a small-icon image list set for the control - even though you
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// haven't specified wxLIST_MASK_IMAGE when inserting.
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// So you have to set a NULL small-icon image list to be sure that
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// the wxLC_LIST mode works without icons. Of course, you may want icons...
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void SetImageList(wxImageList *imageList, int which) ;
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void AssignImageList(wxImageList *imageList, int which) ;
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// returns true if it is a virtual list control
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bool IsVirtual() const { return (GetWindowStyle() & wxLC_VIRTUAL) != 0; }
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// refresh items selectively (only useful for virtual list controls)
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void RefreshItem(long item);
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void RefreshItems(long itemFrom, long itemTo);
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// Operations
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////////////////////////////////////////////////////////////////////////////
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// Arranges the items
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bool Arrange(int flag = wxLIST_ALIGN_DEFAULT);
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// Deletes an item
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bool DeleteItem(long item);
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// Deletes all items
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bool DeleteAllItems() ;
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// Deletes a column
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bool DeleteColumn(int col);
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// Deletes all columns
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bool DeleteAllColumns();
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// Clears items, and columns if there are any.
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void ClearAll();
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// Edit the label
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wxTextCtrl* EditLabel(long item, wxClassInfo* textControlClass = CLASSINFO(wxTextCtrl));
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// End label editing, optionally cancelling the edit
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bool EndEditLabel(bool cancel);
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// Ensures this item is visible
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bool EnsureVisible(long item) ;
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// Find an item whose label matches this string, starting from the item after 'start'
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// or the beginning if 'start' is -1.
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long FindItem(long start, const wxString& str, bool partial = FALSE);
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// Find an item whose data matches this data, starting from the item after 'start'
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// or the beginning if 'start' is -1.
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long FindItem(long start, long data);
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// Find an item nearest this position in the specified direction, starting from
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// the item after 'start' or the beginning if 'start' is -1.
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long FindItem(long start, const wxPoint& pt, int direction);
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// Determines which item (if any) is at the specified point,
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// giving details in 'flags' (see wxLIST_HITTEST_... flags above)
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long HitTest(const wxPoint& point, int& flags);
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// Inserts an item, returning the index of the new item if successful,
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// -1 otherwise.
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long InsertItem(wxListItem& info);
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// Insert a string item
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long InsertItem(long index, const wxString& label);
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// Insert an image item
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long InsertItem(long index, int imageIndex);
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// Insert an image/string item
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long InsertItem(long index, const wxString& label, int imageIndex);
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// For list view mode (only), inserts a column.
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long InsertColumn(long col, wxListItem& info);
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long InsertColumn(long col,
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const wxString& heading,
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int format = wxLIST_FORMAT_LEFT,
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int width = -1);
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// set the number of items in a virtual list control
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void SetItemCount(long count);
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// Scrolls the list control. If in icon, small icon or report view mode,
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// x specifies the number of pixels to scroll. If in list view mode, x
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// specifies the number of columns to scroll.
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// If in icon, small icon or list view mode, y specifies the number of pixels
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// to scroll. If in report view mode, y specifies the number of lines to scroll.
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bool ScrollList(int dx, int dy);
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// Sort items.
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// fn is a function which takes 3 long arguments: item1, item2, data.
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// item1 is the long data associated with a first item (NOT the index).
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// item2 is the long data associated with a second item (NOT the index).
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// data is the same value as passed to SortItems.
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// The return value is a negative number if the first item should precede the second
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// item, a positive number of the second item should precede the first,
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// or zero if the two items are equivalent.
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// data is arbitrary data to be passed to the sort function.
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bool SortItems(wxListCtrlCompare fn, long data);
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// IMPLEMENTATION
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virtual bool MSWCommand(WXUINT param, WXWORD id);
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virtual bool MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
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// bring the control in sync with current m_windowStyle value
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void UpdateStyle();
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// Implementation: converts wxWindows style to MSW style.
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// Can be a single style flag or a bit list.
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// oldStyle is 'normalised' so that it doesn't contain
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// conflicting styles.
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long ConvertToMSWStyle(long& oldStyle, long style) const;
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// Event handlers
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////////////////////////////////////////////////////////////////////////////
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// Necessary for drawing hrules and vrules, if specified
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void OnPaint(wxPaintEvent& event);
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protected:
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// common part of all ctors
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void Init();
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// free memory taken by all internal data
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void FreeAllInternalData();
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wxTextCtrl* m_textCtrl; // The control used for editing a label
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wxImageList * m_imageListNormal; // The image list for normal icons
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wxImageList * m_imageListSmall; // The image list for small icons
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wxImageList * m_imageListState; // The image list state icons (not implemented yet)
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bool m_ownsImageListNormal,
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m_ownsImageListSmall,
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m_ownsImageListState;
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long m_baseStyle; // Basic Windows style flags, for recreation purposes
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int m_colCount; // Windows doesn't have GetColumnCount so must
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// keep track of inserted/deleted columns
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long m_count; // Keep track of item count to save calls to
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// ListView_GetItemCount
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bool m_ignoreChangeMessages;
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// TRUE if we have any internal data (user data & attributes)
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bool m_AnyInternalData;
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// TRUE if we have any items with custom attributes
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bool m_hasAnyAttr;
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// these functions are only used for virtual list view controls, i.e. the
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// ones with wxLC_VIRTUAL style
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// return the text for the given column of the given item
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virtual wxString OnGetItemText(long item, long column) const;
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// return the icon for the given item
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virtual int OnGetItemImage(long item) const;
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// return the attribute for the item (may return NULL if none)
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virtual wxListItemAttr *OnGetItemAttr(long item) const;
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private:
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bool DoCreateControl(int x, int y, int w, int h);
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// process NM_CUSTOMDRAW notification message
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WXLPARAM OnCustomDraw(WXLPARAM lParam);
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DECLARE_DYNAMIC_CLASS(wxListCtrl)
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DECLARE_EVENT_TABLE()
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DECLARE_NO_COPY_CLASS(wxListCtrl)
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};
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#endif // wxUSE_LISTCTRL
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#endif // _WX_LISTCTRL_H_
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