1 ! Copyright (C) 2008, 2009 Joe Groff, Slava Pestov.
2 ! Copyright (C) 2017 Alexander Ilin.
3 ! See http://factorcode.org/license.txt for BSD license.
4 USING: accessors alien.accessors alien.data alien.strings
5 classes.struct io.encodings.utf16n kernel make math namespaces
6 prettyprint sequences specialized-arrays
7 ui.gadgets.worlds ui.tools.listener windows.com
8 windows.com.wrapper windows.dropfiles windows.kernel32
9 windows.ole32 windows.shell32 windows.types ;
10 SPECIALIZED-ARRAY: WCHAR
11 IN: windows.dragdrop-listener
13 CONSTANT: E_OUTOFMEMORY -2147024882 ! 0x8007000e
15 : handle-data-object ( handler: ( hdrop -- x ) data-object -- filenames )
19 DVASPECT_CONTENT >>dwAspect
23 [ IDataObject::GetData ] keep swap succeeded? [
25 [ rot execute( hdrop -- x ) ] with-global-lock
29 : filenames-from-data-object ( data-object -- filenames )
30 \ filenames-from-hdrop swap handle-data-object ;
32 : filecount-from-data-object ( data-object -- n )
33 \ filecount-from-hdrop swap handle-data-object ;
35 TUPLE: listener-dragdrop hWnd last-drop-effect ;
37 : <listener-dragdrop> ( hWnd -- object )
38 DROPEFFECT_NONE listener-dragdrop boa ;
41 SYMBOL: +listener-dragdrop-wrapper+
47 [ ! HRESULT DragEnter ( IDataObject* pDataObject, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect )
49 2drop filecount-from-data-object
50 1 = DROPEFFECT_COPY DROPEFFECT_NONE ?
52 ] dip 0 set-alien-unsigned-4
53 >>last-drop-effect drop
55 ] [ ! HRESULT DragOver ( DWORD grfKeyState, POINTL pt, DWORD* pdwEffect )
56 [ 2drop last-drop-effect>> ] dip 0 set-alien-unsigned-4
58 ] [ ! HRESULT DragLeave ( )
60 ] [ ! HRESULT Drop ( IDataObject* pDataObject, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect )
63 filenames-from-data-object
65 first unparse [ "USE: parser " % % " run-file" % ] "" make
68 ] [ drop DROPEFFECT_NONE ] if
69 ] dip 0 set-alien-unsigned-4
73 } <com-wrapper> +listener-dragdrop-wrapper+ set-global
76 : dragdrop-listener-window ( -- )
77 world get handle>> hWnd>> dup <listener-dragdrop>
78 +listener-dragdrop-wrapper+ get-global com-wrap [
79 2dup RegisterDragDrop dup E_OUTOFMEMORY =
80 [ drop ole-initialize RegisterDragDrop ] [ 2nip ] if
82 ] with-com-interface ;