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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | daniel-mar | 1 | unit DragDropFile; |
| 2 | |||
| 3 | // ----------------------------------------------------------------------------- |
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| 4 | // Project: Drag and Drop Component Suite. |
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| 5 | // Module: DragDropFile |
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| 6 | // Description: Implements Dragging and Dropping of files and folders. |
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| 7 | // Version: 4.0 |
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| 8 | // Date: 18-MAY-2001 |
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| 9 | // Target: Win32, Delphi 5-6 |
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| 10 | // Authors: Anders Melander, anders@melander.dk, http://www.melander.dk |
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| 11 | // Copyright © 1997-2001 Angus Johnson & Anders Melander |
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| 12 | // ----------------------------------------------------------------------------- |
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| 13 | interface |
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| 14 | |||
| 15 | uses |
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| 16 | DragDrop, |
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| 17 | DropTarget, |
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| 18 | DropSource, |
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| 19 | DragDropFormats, |
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| 20 | ActiveX, |
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| 21 | Windows, |
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| 22 | Classes; |
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| 23 | |||
| 24 | type |
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| 25 | //////////////////////////////////////////////////////////////////////////////// |
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| 26 | // |
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| 27 | // TFileClipboardFormat |
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| 28 | // |
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| 29 | //////////////////////////////////////////////////////////////////////////////// |
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| 30 | TFileClipboardFormat = class(TCustomSimpleClipboardFormat) |
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| 31 | private |
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| 32 | FFiles: TStrings; |
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| 33 | protected |
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| 34 | function ReadData(Value: pointer; Size: integer): boolean; override; |
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| 35 | function WriteData(Value: pointer; Size: integer): boolean; override; |
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| 36 | function GetSize: integer; override; |
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| 37 | public |
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| 38 | constructor Create; override; |
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| 39 | destructor Destroy; override; |
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| 40 | function GetClipboardFormat: TClipFormat; override; |
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| 41 | function Assign(Source: TCustomDataFormat): boolean; override; |
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| 42 | function AssignTo(Dest: TCustomDataFormat): boolean; override; |
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| 43 | procedure Clear; override; |
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| 44 | function HasData: boolean; override; |
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| 45 | property Files: TStrings read FFiles; |
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| 46 | end; |
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| 47 | |||
| 48 | //////////////////////////////////////////////////////////////////////////////// |
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| 49 | // |
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| 50 | // TFilenameClipboardFormat |
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| 51 | // |
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| 52 | //////////////////////////////////////////////////////////////////////////////// |
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| 53 | TFilenameClipboardFormat = class(TCustomTextClipboardFormat) |
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| 54 | public |
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| 55 | function GetClipboardFormat: TClipFormat; override; |
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| 56 | function Assign(Source: TCustomDataFormat): boolean; override; |
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| 57 | function AssignTo(Dest: TCustomDataFormat): boolean; override; |
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| 58 | property Filename: string read GetString write SetString; |
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| 59 | end; |
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| 60 | |||
| 61 | //////////////////////////////////////////////////////////////////////////////// |
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| 62 | // |
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| 63 | // TFilenameWClipboardFormat |
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| 64 | // |
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| 65 | //////////////////////////////////////////////////////////////////////////////// |
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| 66 | TFilenameWClipboardFormat = class(TCustomWideTextClipboardFormat) |
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| 67 | public |
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| 68 | function GetClipboardFormat: TClipFormat; override; |
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| 69 | function Assign(Source: TCustomDataFormat): boolean; override; |
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| 70 | function AssignTo(Dest: TCustomDataFormat): boolean; override; |
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| 71 | property Filename: WideString read GetText write SetText; |
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| 72 | end; |
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| 73 | |||
| 74 | //////////////////////////////////////////////////////////////////////////////// |
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| 75 | // |
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| 76 | // TFilenameMapClipboardFormat |
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| 77 | // |
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| 78 | //////////////////////////////////////////////////////////////////////////////// |
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| 79 | // DONE -oanme -cStopShip : Rename TFilenameMapClipboardFormat to TFilenameMapClipboardFormat. Also wide version. |
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| 80 | TFilenameMapClipboardFormat = class(TCustomSimpleClipboardFormat) |
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| 81 | private |
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| 82 | FFileMaps : TStrings; |
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| 83 | protected |
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| 84 | function ReadData(Value: pointer; Size: integer): boolean; override; |
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| 85 | function WriteData(Value: pointer; Size: integer): boolean; override; |
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| 86 | function GetSize: integer; override; |
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| 87 | public |
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| 88 | constructor Create; override; |
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| 89 | destructor Destroy; override; |
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| 90 | function GetClipboardFormat: TClipFormat; override; |
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| 91 | procedure Clear; override; |
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| 92 | function HasData: boolean; override; |
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| 93 | property FileMaps: TStrings read FFileMaps; |
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| 94 | end; |
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| 95 | |||
| 96 | //////////////////////////////////////////////////////////////////////////////// |
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| 97 | // |
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| 98 | // TFilenameMapWClipboardFormat |
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| 99 | // |
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| 100 | //////////////////////////////////////////////////////////////////////////////// |
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| 101 | TFilenameMapWClipboardFormat = class(TCustomSimpleClipboardFormat) |
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| 102 | private |
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| 103 | FFileMaps : TStrings; |
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| 104 | protected |
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| 105 | function ReadData(Value: pointer; Size: integer): boolean; override; |
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| 106 | function WriteData(Value: pointer; Size: integer): boolean; override; |
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| 107 | function GetSize: integer; override; |
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| 108 | public |
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| 109 | constructor Create; override; |
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| 110 | destructor Destroy; override; |
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| 111 | function GetClipboardFormat: TClipFormat; override; |
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| 112 | procedure Clear; override; |
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| 113 | function HasData: boolean; override; |
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| 114 | property FileMaps: TStrings read FFileMaps; |
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| 115 | end; |
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| 116 | |||
| 117 | |||
| 118 | //////////////////////////////////////////////////////////////////////////////// |
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| 119 | // |
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| 120 | // TFileMapDataFormat |
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| 121 | // |
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| 122 | //////////////////////////////////////////////////////////////////////////////// |
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| 123 | TFileMapDataFormat = class(TCustomDataFormat) |
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| 124 | private |
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| 125 | FFileMaps : TStrings; |
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| 126 | public |
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| 127 | constructor Create(AOwner: TDragDropComponent); override; |
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| 128 | destructor Destroy; override; |
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| 129 | function Assign(Source: TClipboardFormat): boolean; override; |
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| 130 | function AssignTo(Dest: TClipboardFormat): boolean; override; |
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| 131 | procedure Clear; override; |
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| 132 | function HasData: boolean; override; |
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| 133 | function NeedsData: boolean; override; |
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| 134 | property FileMaps: TStrings read FFileMaps; |
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| 135 | end; |
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| 136 | |||
| 137 | //////////////////////////////////////////////////////////////////////////////// |
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| 138 | // |
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| 139 | // TFileDataFormat |
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| 140 | // |
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| 141 | //////////////////////////////////////////////////////////////////////////////// |
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| 142 | TFileDataFormat = class(TCustomDataFormat) |
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| 143 | private |
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| 144 | FFiles : TStrings; |
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| 145 | protected |
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| 146 | public |
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| 147 | constructor Create(AOwner: TDragDropComponent); override; |
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| 148 | destructor Destroy; override; |
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| 149 | function Assign(Source: TClipboardFormat): boolean; override; |
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| 150 | function AssignTo(Dest: TClipboardFormat): boolean; override; |
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| 151 | procedure Clear; override; |
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| 152 | function HasData: boolean; override; |
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| 153 | function NeedsData: boolean; override; |
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| 154 | property Files: TStrings read FFiles; |
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| 155 | end; |
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| 156 | |||
| 157 | //////////////////////////////////////////////////////////////////////////////// |
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| 158 | // |
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| 159 | // TDropFileTarget |
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| 160 | // |
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| 161 | //////////////////////////////////////////////////////////////////////////////// |
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| 162 | TDropFileTarget = class(TCustomDropMultiTarget) |
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| 163 | private |
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| 164 | FFileFormat : TFileDataFormat; |
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| 165 | FFileMapFormat : TFileMapDataFormat; |
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| 166 | protected |
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| 167 | function GetFiles: TStrings; |
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| 168 | function GetMappedNames: TStrings; |
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| 169 | function GetPreferredDropEffect: LongInt; override; |
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| 170 | public |
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| 171 | constructor Create(AOwner: TComponent); override; |
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| 172 | destructor Destroy; override; |
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| 173 | property Files: TStrings read GetFiles; |
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| 174 | property MappedNames: TStrings read GetMappedNames; |
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| 175 | end; |
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| 176 | |||
| 177 | //////////////////////////////////////////////////////////////////////////////// |
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| 178 | // |
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| 179 | // TDropFileSource |
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| 180 | // |
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| 181 | //////////////////////////////////////////////////////////////////////////////// |
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| 182 | TDropFileSource = class(TCustomDropMultiSource) |
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| 183 | private |
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| 184 | FFileFormat : TFileDataFormat; |
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| 185 | FFileMapFormat : TFileMapDataFormat; |
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| 186 | function GetFiles: TStrings; |
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| 187 | function GetMappedNames: TStrings; |
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| 188 | protected |
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| 189 | procedure SetFiles(AFiles: TStrings); |
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| 190 | procedure SetMappedNames(ANames: TStrings); |
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| 191 | public |
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| 192 | constructor Create(aOwner: TComponent); override; |
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| 193 | destructor Destroy; override; |
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| 194 | published |
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| 195 | property Files: TStrings read GetFiles write SetFiles; |
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| 196 | // MappedNames is only needed if files need to be renamed during a drag op. |
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| 197 | // E.g. dragging from 'Recycle Bin'. |
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| 198 | property MappedNames: TStrings read GetMappedNames write SetMappedNames; |
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| 199 | end; |
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| 200 | |||
| 201 | |||
| 202 | //////////////////////////////////////////////////////////////////////////////// |
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| 203 | // |
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| 204 | // Component registration |
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| 205 | // |
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| 206 | //////////////////////////////////////////////////////////////////////////////// |
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| 207 | procedure Register; |
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| 208 | |||
| 209 | |||
| 210 | //////////////////////////////////////////////////////////////////////////////// |
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| 211 | // |
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| 212 | // Misc. |
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| 213 | // |
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| 214 | //////////////////////////////////////////////////////////////////////////////// |
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| 215 | function ReadFilesFromHGlobal(const HGlob: HGlobal; Files: TStrings): boolean; // V4: renamed |
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| 216 | function ReadFilesFromData(Data: pointer; Size: integer; Files: TStrings): boolean; |
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| 217 | function ReadFilesFromZeroList(Data: pointer; Size: integer; |
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| 218 | Wide: boolean; Files: TStrings): boolean; |
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| 219 | function WriteFilesToZeroList(Data: pointer; Size: integer; |
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| 220 | Wide: boolean; Files: TStrings): boolean; |
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| 221 | |||
| 222 | |||
| 223 | //////////////////////////////////////////////////////////////////////////////// |
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| 224 | //////////////////////////////////////////////////////////////////////////////// |
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| 225 | // |
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| 226 | // IMPLEMENTATION |
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| 227 | // |
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| 228 | //////////////////////////////////////////////////////////////////////////////// |
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| 229 | //////////////////////////////////////////////////////////////////////////////// |
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| 230 | implementation |
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| 231 | |||
| 232 | uses |
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| 233 | DragDropPIDL, |
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| 234 | SysUtils, |
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| 235 | ShlObj; |
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| 236 | |||
| 237 | //////////////////////////////////////////////////////////////////////////////// |
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| 238 | // |
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| 239 | // Component registration |
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| 240 | // |
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| 241 | //////////////////////////////////////////////////////////////////////////////// |
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| 242 | |||
| 243 | procedure Register; |
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| 244 | begin |
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| 245 | RegisterComponents(DragDropComponentPalettePage, [TDropFileTarget, |
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| 246 | TDropFileSource]); |
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| 247 | end; |
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| 248 | |||
| 249 | |||
| 250 | //////////////////////////////////////////////////////////////////////////////// |
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| 251 | // |
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| 252 | // Utilities |
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| 253 | // |
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| 254 | //////////////////////////////////////////////////////////////////////////////// |
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| 255 | |||
| 256 | function ReadFilesFromHGlobal(const HGlob: HGlobal; Files: TStrings): boolean; |
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| 257 | var |
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| 258 | DropFiles : PDropFiles; |
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| 259 | begin |
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| 260 | DropFiles := PDropFiles(GlobalLock(HGlob)); |
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| 261 | try |
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| 262 | Result := ReadFilesFromData(DropFiles, GlobalSize(HGlob), Files) |
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| 263 | finally |
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| 264 | GlobalUnlock(HGlob); |
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| 265 | end; |
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| 266 | end; |
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| 267 | |||
| 268 | function ReadFilesFromData(Data: pointer; Size: integer; Files: TStrings): boolean; |
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| 269 | var |
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| 270 | Wide : boolean; |
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| 271 | begin |
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| 272 | Files.Clear; |
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| 273 | if (Data <> nil) then |
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| 274 | begin |
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| 275 | Wide := PDropFiles(Data)^.fWide; |
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| 276 | dec(Size, PDropFiles(Data)^.pFiles); |
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| 277 | inc(PChar(Data), PDropFiles(Data)^.pFiles); |
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| 278 | ReadFilesFromZeroList(Data, Size, Wide, Files); |
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| 279 | end; |
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| 280 | |||
| 281 | Result := (Files.Count > 0); |
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| 282 | end; |
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| 283 | |||
| 284 | function ReadFilesFromZeroList(Data: pointer; Size: integer; |
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| 285 | Wide: boolean; Files: TStrings): boolean; |
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| 286 | var |
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| 287 | StringSize : integer; |
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| 288 | begin |
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| 289 | Result := False; |
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| 290 | if (Data <> nil) then |
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| 291 | while (Size > 0) and (PChar(Data)^ <> #0) do |
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| 292 | begin |
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| 293 | if (Wide) then |
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| 294 | begin |
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| 295 | Files.Add(PWideChar(Data)); |
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| 296 | StringSize := (Length(PWideChar(Data)) + 1) * 2; |
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| 297 | end else |
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| 298 | begin |
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| 299 | Files.Add(PChar(Data)); |
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| 300 | StringSize := Length(PChar(Data)) + 1; |
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| 301 | end; |
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| 302 | inc(PChar(Data), StringSize); |
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| 303 | dec(Size, StringSize); |
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| 304 | Result := True; |
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| 305 | end; |
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| 306 | end; |
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| 307 | |||
| 308 | function WriteFilesToZeroList(Data: pointer; Size: integer; |
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| 309 | Wide: boolean; Files: TStrings): boolean; |
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| 310 | var |
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| 311 | i : integer; |
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| 312 | begin |
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| 313 | Result := False; |
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| 314 | if (Data <> nil) then |
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| 315 | begin |
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| 316 | i := 0; |
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| 317 | dec(Size); |
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| 318 | while (Size > 0) and (i < Files.Count) do |
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| 319 | begin |
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| 320 | if (Wide) then |
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| 321 | begin |
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| 322 | StringToWideChar(Files[i], Data, Size); |
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| 323 | dec(Size, (Length(Files[i])+1)*2); |
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| 324 | end else |
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| 325 | begin |
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| 326 | StrPLCopy(Data, Files[i], Size); |
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| 327 | dec(Size, Length(Files[i])+1); |
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| 328 | end; |
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| 329 | inc(PChar(Data), Length(Files[i])+1); |
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| 330 | inc(i); |
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| 331 | Result := True; |
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| 332 | end; |
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| 333 | |||
| 334 | // Final teminating zero. |
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| 335 | if (Size >= 0) then |
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| 336 | PChar(Data)^ := #0; |
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| 337 | end; |
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| 338 | end; |
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| 339 | |||
| 340 | |||
| 341 | //////////////////////////////////////////////////////////////////////////////// |
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| 342 | // |
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| 343 | // TFileClipboardFormat |
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| 344 | // |
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| 345 | //////////////////////////////////////////////////////////////////////////////// |
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| 346 | constructor TFileClipboardFormat.Create; |
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| 347 | begin |
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| 348 | inherited Create; |
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| 349 | FFiles := TStringList.Create; |
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| 350 | // Note: Setting dwAspect to DVASPECT_SHORT will request that the data source |
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| 351 | // returns the file names in short (8.3) format. |
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| 352 | // FFormatEtc.dwAspect := DVASPECT_SHORT; |
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| 353 | end; |
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| 354 | |||
| 355 | destructor TFileClipboardFormat.Destroy; |
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| 356 | begin |
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| 357 | FFiles.Free; |
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| 358 | inherited Destroy; |
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| 359 | end; |
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| 360 | |||
| 361 | function TFileClipboardFormat.GetClipboardFormat: TClipFormat; |
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| 362 | begin |
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| 363 | Result := CF_HDROP; |
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| 364 | end; |
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| 365 | |||
| 366 | procedure TFileClipboardFormat.Clear; |
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| 367 | begin |
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| 368 | FFiles.Clear; |
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| 369 | end; |
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| 370 | |||
| 371 | function TFileClipboardFormat.HasData: boolean; |
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| 372 | begin |
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| 373 | Result := (FFiles.Count > 0); |
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| 374 | end; |
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| 375 | |||
| 376 | function TFileClipboardFormat.GetSize: integer; |
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| 377 | var |
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| 378 | i : integer; |
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| 379 | begin |
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| 380 | Result := SizeOf(TDropFiles) + FFiles.Count + 1; |
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| 381 | for i := 0 to FFiles.Count-1 do |
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| 382 | inc(Result, Length(FFiles[i])); |
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| 383 | end; |
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| 384 | |||
| 385 | function TFileClipboardFormat.ReadData(Value: pointer; |
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| 386 | Size: integer): boolean; |
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| 387 | begin |
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| 388 | Result := (Size > SizeOf(TDropFiles)); |
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| 389 | if (not Result) then |
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| 390 | exit; |
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| 391 | |||
| 392 | Result := ReadFilesFromData(Value, Size, FFiles); |
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| 393 | end; |
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| 394 | |||
| 395 | function TFileClipboardFormat.WriteData(Value: pointer; |
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| 396 | Size: integer): boolean; |
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| 397 | begin |
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| 398 | Result := (Size > SizeOf(TDropFiles)); |
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| 399 | if (not Result) then |
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| 400 | exit; |
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| 401 | |||
| 402 | PDropFiles(Value)^.pfiles := SizeOf(TDropFiles); |
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| 403 | PDropFiles(Value)^.fwide := False; |
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| 404 | inc(PChar(Value), SizeOf(TDropFiles)); |
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| 405 | dec(Size, SizeOf(TDropFiles)); |
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| 406 | |||
| 407 | WriteFilesToZeroList(Value, Size, False, FFiles); |
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| 408 | end; |
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| 409 | |||
| 410 | function TFileClipboardFormat.Assign(Source: TCustomDataFormat): boolean; |
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| 411 | begin |
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| 412 | if (Source is TFileDataFormat) then |
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| 413 | begin |
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| 414 | FFiles.Assign(TFileDataFormat(Source).Files); |
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| 415 | Result := True; |
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| 416 | end else |
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| 417 | Result := inherited Assign(Source); |
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| 418 | end; |
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| 419 | |||
| 420 | function TFileClipboardFormat.AssignTo(Dest: TCustomDataFormat): boolean; |
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| 421 | begin |
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| 422 | if (Dest is TFileDataFormat) then |
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| 423 | begin |
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| 424 | TFileDataFormat(Dest).Files.Assign(FFiles); |
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| 425 | Result := True; |
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| 426 | end else |
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| 427 | Result := inherited AssignTo(Dest); |
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| 428 | end; |
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| 429 | |||
| 430 | |||
| 431 | //////////////////////////////////////////////////////////////////////////////// |
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| 432 | // |
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| 433 | // TFilenameClipboardFormat |
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| 434 | // |
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| 435 | //////////////////////////////////////////////////////////////////////////////// |
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| 436 | var |
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| 437 | CF_FILENAMEA: TClipFormat = 0; |
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| 438 | |||
| 439 | function TFilenameClipboardFormat.GetClipboardFormat: TClipFormat; |
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| 440 | begin |
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| 441 | if (CF_FILENAMEA = 0) then |
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| 442 | CF_FILENAMEA := RegisterClipboardFormat(CFSTR_FILENAMEA); |
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| 443 | Result := CF_FILENAMEA; |
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| 444 | end; |
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| 445 | |||
| 446 | function TFilenameClipboardFormat.Assign(Source: TCustomDataFormat): boolean; |
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| 447 | begin |
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| 448 | if (Source is TFileDataFormat) then |
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| 449 | begin |
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| 450 | Result := (TFileDataFormat(Source).Files.Count > 0); |
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| 451 | if (Result) then |
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| 452 | Filename := TFileDataFormat(Source).Files[0]; |
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| 453 | end else |
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| 454 | Result := inherited Assign(Source); |
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| 455 | end; |
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| 456 | |||
| 457 | function TFilenameClipboardFormat.AssignTo(Dest: TCustomDataFormat): boolean; |
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| 458 | begin |
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| 459 | if (Dest is TFileDataFormat) then |
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| 460 | begin |
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| 461 | TFileDataFormat(Dest).Files.Add(Filename); |
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| 462 | Result := True; |
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| 463 | end else |
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| 464 | Result := inherited AssignTo(Dest); |
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| 465 | end; |
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| 466 | |||
| 467 | |||
| 468 | //////////////////////////////////////////////////////////////////////////////// |
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| 469 | // |
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| 470 | // TFilenameWClipboardFormat |
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| 471 | // |
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| 472 | //////////////////////////////////////////////////////////////////////////////// |
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| 473 | var |
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| 474 | CF_FILENAMEW: TClipFormat = 0; |
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| 475 | |||
| 476 | function TFilenameWClipboardFormat.GetClipboardFormat: TClipFormat; |
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| 477 | begin |
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| 478 | if (CF_FILENAMEW = 0) then |
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| 479 | CF_FILENAMEW := RegisterClipboardFormat(CFSTR_FILENAMEW); |
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| 480 | Result := CF_FILENAMEW; |
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| 481 | end; |
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| 482 | |||
| 483 | function TFilenameWClipboardFormat.Assign(Source: TCustomDataFormat): boolean; |
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| 484 | begin |
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| 485 | if (Source is TFileDataFormat) then |
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| 486 | begin |
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| 487 | Result := (TFileDataFormat(Source).Files.Count > 0); |
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| 488 | if (Result) then |
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| 489 | Filename := TFileDataFormat(Source).Files[0]; |
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| 490 | end else |
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| 491 | Result := inherited Assign(Source); |
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| 492 | end; |
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| 493 | |||
| 494 | function TFilenameWClipboardFormat.AssignTo(Dest: TCustomDataFormat): boolean; |
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| 495 | begin |
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| 496 | if (Dest is TFileDataFormat) then |
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| 497 | begin |
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| 498 | TFileDataFormat(Dest).Files.Add(Filename); |
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| 499 | Result := True; |
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| 500 | end else |
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| 501 | Result := inherited AssignTo(Dest); |
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| 502 | end; |
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| 503 | |||
| 504 | |||
| 505 | //////////////////////////////////////////////////////////////////////////////// |
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| 506 | // |
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| 507 | // TFilenameMapClipboardFormat |
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| 508 | // |
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| 509 | //////////////////////////////////////////////////////////////////////////////// |
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| 510 | var |
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| 511 | CF_FILENAMEMAP: TClipFormat = 0; |
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| 512 | |||
| 513 | constructor TFilenameMapClipboardFormat.Create; |
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| 514 | begin |
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| 515 | inherited Create; |
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| 516 | FFileMaps := TStringList.Create; |
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| 517 | end; |
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| 518 | |||
| 519 | destructor TFilenameMapClipboardFormat.Destroy; |
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| 520 | begin |
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| 521 | FFileMaps.Free; |
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| 522 | inherited Destroy; |
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| 523 | end; |
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| 524 | |||
| 525 | function TFilenameMapClipboardFormat.GetClipboardFormat: TClipFormat; |
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| 526 | begin |
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| 527 | if (CF_FILENAMEMAP = 0) then |
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| 528 | CF_FILENAMEMAP := RegisterClipboardFormat(CFSTR_FILENAMEMAPA); |
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| 529 | Result := CF_FILENAMEMAP; |
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| 530 | end; |
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| 531 | |||
| 532 | procedure TFilenameMapClipboardFormat.Clear; |
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| 533 | begin |
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| 534 | FFileMaps.Clear; |
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| 535 | end; |
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| 536 | |||
| 537 | function TFilenameMapClipboardFormat.HasData: boolean; |
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| 538 | begin |
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| 539 | Result := (FFileMaps.Count > 0); |
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| 540 | end; |
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| 541 | |||
| 542 | function TFilenameMapClipboardFormat.GetSize: integer; |
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| 543 | var |
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| 544 | i : integer; |
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| 545 | begin |
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| 546 | Result := FFileMaps.Count + 1; |
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| 547 | for i := 0 to FFileMaps.Count-1 do |
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| 548 | inc(Result, Length(FFileMaps[i])); |
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| 549 | end; |
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| 550 | |||
| 551 | function TFilenameMapClipboardFormat.ReadData(Value: pointer; |
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| 552 | Size: integer): boolean; |
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| 553 | begin |
||
| 554 | Result := ReadFilesFromZeroList(Value, Size, False, FFileMaps); |
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| 555 | end; |
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| 556 | |||
| 557 | function TFilenameMapClipboardFormat.WriteData(Value: pointer; |
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| 558 | Size: integer): boolean; |
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| 559 | begin |
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| 560 | Result := WriteFilesToZeroList(Value, Size, False, FFileMaps); |
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| 561 | end; |
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| 562 | |||
| 563 | |||
| 564 | //////////////////////////////////////////////////////////////////////////////// |
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| 565 | // |
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| 566 | // TFilenameMapWClipboardFormat |
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| 567 | // |
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| 568 | //////////////////////////////////////////////////////////////////////////////// |
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| 569 | var |
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| 570 | CF_FILENAMEMAPW: TClipFormat = 0; |
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| 571 | |||
| 572 | constructor TFilenameMapWClipboardFormat.Create; |
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| 573 | begin |
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| 574 | inherited Create; |
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| 575 | FFileMaps := TStringList.Create; |
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| 576 | end; |
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| 577 | |||
| 578 | destructor TFilenameMapWClipboardFormat.Destroy; |
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| 579 | begin |
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| 580 | FFileMaps.Free; |
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| 581 | inherited Destroy; |
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| 582 | end; |
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| 583 | |||
| 584 | function TFilenameMapWClipboardFormat.GetClipboardFormat: TClipFormat; |
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| 585 | begin |
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| 586 | if (CF_FILENAMEMAPW = 0) then |
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| 587 | CF_FILENAMEMAPW := RegisterClipboardFormat(CFSTR_FILENAMEMAPW); |
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| 588 | Result := CF_FILENAMEMAPW; |
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| 589 | end; |
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| 590 | |||
| 591 | procedure TFilenameMapWClipboardFormat.Clear; |
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| 592 | begin |
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| 593 | FFileMaps.Clear; |
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| 594 | end; |
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| 595 | |||
| 596 | function TFilenameMapWClipboardFormat.HasData: boolean; |
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| 597 | begin |
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| 598 | Result := (FFileMaps.Count > 0); |
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| 599 | end; |
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| 600 | |||
| 601 | function TFilenameMapWClipboardFormat.GetSize: integer; |
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| 602 | var |
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| 603 | i : integer; |
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| 604 | begin |
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| 605 | Result := FFileMaps.Count + 1; |
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| 606 | for i := 0 to FFileMaps.Count-1 do |
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| 607 | inc(Result, Length(FFileMaps[i])); |
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| 608 | inc(Result, Result); |
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| 609 | end; |
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| 610 | |||
| 611 | function TFilenameMapWClipboardFormat.ReadData(Value: pointer; |
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| 612 | Size: integer): boolean; |
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| 613 | begin |
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| 614 | Result := ReadFilesFromZeroList(Value, Size, True, FFileMaps); |
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| 615 | end; |
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| 616 | |||
| 617 | function TFilenameMapWClipboardFormat.WriteData(Value: pointer; |
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| 618 | Size: integer): boolean; |
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| 619 | begin |
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| 620 | Result := WriteFilesToZeroList(Value, Size, True, FFileMaps); |
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| 621 | end; |
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| 622 | |||
| 623 | |||
| 624 | //////////////////////////////////////////////////////////////////////////////// |
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| 625 | // |
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| 626 | // TFileMapDataFormat |
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| 627 | // |
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| 628 | //////////////////////////////////////////////////////////////////////////////// |
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| 629 | constructor TFileMapDataFormat.Create(AOwner: TDragDropComponent); |
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| 630 | begin |
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| 631 | inherited Create(AOwner); |
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| 632 | FFileMaps := TStringList.Create; |
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| 633 | TStringList(FFileMaps).OnChanging := DoOnChanging; |
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| 634 | end; |
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| 635 | |||
| 636 | destructor TFileMapDataFormat.Destroy; |
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| 637 | begin |
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| 638 | FFileMaps.Free; |
||
| 639 | inherited Destroy; |
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| 640 | end; |
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| 641 | |||
| 642 | function TFileMapDataFormat.Assign(Source: TClipboardFormat): boolean; |
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| 643 | begin |
||
| 644 | Result := True; |
||
| 645 | |||
| 646 | if (Source is TFilenameMapClipboardFormat) then |
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| 647 | FFileMaps.Assign(TFilenameMapClipboardFormat(Source).FileMaps) |
||
| 648 | |||
| 649 | else if (Source is TFilenameMapWClipboardFormat) then |
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| 650 | FFileMaps.Assign(TFilenameMapWClipboardFormat(Source).FileMaps) |
||
| 651 | |||
| 652 | else |
||
| 653 | Result := inherited Assign(Source); |
||
| 654 | end; |
||
| 655 | |||
| 656 | function TFileMapDataFormat.AssignTo(Dest: TClipboardFormat): boolean; |
||
| 657 | begin |
||
| 658 | Result := True; |
||
| 659 | |||
| 660 | if (Dest is TFilenameMapClipboardFormat) then |
||
| 661 | TFilenameMapClipboardFormat(Dest).FileMaps.Assign(FFileMaps) |
||
| 662 | |||
| 663 | else if (Dest is TFilenameMapWClipboardFormat) then |
||
| 664 | TFilenameMapWClipboardFormat(Dest).FileMaps.Assign(FFileMaps) |
||
| 665 | |||
| 666 | else |
||
| 667 | Result := inherited AssignTo(Dest); |
||
| 668 | end; |
||
| 669 | |||
| 670 | procedure TFileMapDataFormat.Clear; |
||
| 671 | begin |
||
| 672 | FFileMaps.Clear; |
||
| 673 | end; |
||
| 674 | |||
| 675 | function TFileMapDataFormat.HasData: boolean; |
||
| 676 | begin |
||
| 677 | Result := (FFileMaps.Count > 0); |
||
| 678 | end; |
||
| 679 | |||
| 680 | function TFileMapDataFormat.NeedsData: boolean; |
||
| 681 | begin |
||
| 682 | Result := (FFileMaps.Count = 0); |
||
| 683 | end; |
||
| 684 | |||
| 685 | |||
| 686 | //////////////////////////////////////////////////////////////////////////////// |
||
| 687 | // |
||
| 688 | // TFileDataFormat |
||
| 689 | // |
||
| 690 | //////////////////////////////////////////////////////////////////////////////// |
||
| 691 | constructor TFileDataFormat.Create(AOwner: TDragDropComponent); |
||
| 692 | begin |
||
| 693 | inherited Create(AOwner); |
||
| 694 | FFiles := TStringList.Create; |
||
| 695 | TStringList(FFiles).OnChanging := DoOnChanging; |
||
| 696 | end; |
||
| 697 | |||
| 698 | destructor TFileDataFormat.Destroy; |
||
| 699 | begin |
||
| 700 | FFiles.Free; |
||
| 701 | inherited Destroy; |
||
| 702 | end; |
||
| 703 | |||
| 704 | function TFileDataFormat.Assign(Source: TClipboardFormat): boolean; |
||
| 705 | begin |
||
| 706 | Result := True; |
||
| 707 | |||
| 708 | if (Source is TFileClipboardFormat) then |
||
| 709 | FFiles.Assign(TFileClipboardFormat(Source).Files) |
||
| 710 | |||
| 711 | else if (Source is TPIDLClipboardFormat) then |
||
| 712 | FFiles.Assign(TPIDLClipboardFormat(Source).Filenames) |
||
| 713 | |||
| 714 | else |
||
| 715 | Result := inherited Assign(Source); |
||
| 716 | end; |
||
| 717 | |||
| 718 | function TFileDataFormat.AssignTo(Dest: TClipboardFormat): boolean; |
||
| 719 | begin |
||
| 720 | Result := True; |
||
| 721 | |||
| 722 | if (Dest is TFileClipboardFormat) then |
||
| 723 | TFileClipboardFormat(Dest).Files.Assign(FFiles) |
||
| 724 | |||
| 725 | else if (Dest is TPIDLClipboardFormat) then |
||
| 726 | TPIDLClipboardFormat(Dest).Filenames.Assign(FFiles) |
||
| 727 | |||
| 728 | else |
||
| 729 | Result := inherited AssignTo(Dest); |
||
| 730 | end; |
||
| 731 | |||
| 732 | procedure TFileDataFormat.Clear; |
||
| 733 | begin |
||
| 734 | FFiles.Clear; |
||
| 735 | end; |
||
| 736 | |||
| 737 | function TFileDataFormat.HasData: boolean; |
||
| 738 | begin |
||
| 739 | Result := (FFiles.Count > 0); |
||
| 740 | end; |
||
| 741 | |||
| 742 | function TFileDataFormat.NeedsData: boolean; |
||
| 743 | begin |
||
| 744 | Result := (FFiles.Count = 0); |
||
| 745 | end; |
||
| 746 | |||
| 747 | |||
| 748 | //////////////////////////////////////////////////////////////////////////////// |
||
| 749 | // |
||
| 750 | // TDropFileTarget |
||
| 751 | // |
||
| 752 | //////////////////////////////////////////////////////////////////////////////// |
||
| 753 | constructor TDropFileTarget.Create(AOwner: TComponent); |
||
| 754 | begin |
||
| 755 | inherited Create(AOwner); |
||
| 756 | OptimizedMove := True; |
||
| 757 | |||
| 758 | FFileFormat := TFileDataFormat.Create(Self); |
||
| 759 | FFileMapFormat := TFileMapDataFormat.Create(Self); |
||
| 760 | end; |
||
| 761 | |||
| 762 | destructor TDropFileTarget.Destroy; |
||
| 763 | begin |
||
| 764 | FFileFormat.Free; |
||
| 765 | FFileMapFormat.Free; |
||
| 766 | inherited Destroy; |
||
| 767 | end; |
||
| 768 | |||
| 769 | function TDropFileTarget.GetFiles: TStrings; |
||
| 770 | begin |
||
| 771 | Result := FFileFormat.Files; |
||
| 772 | end; |
||
| 773 | |||
| 774 | function TDropFileTarget.GetMappedNames: TStrings; |
||
| 775 | begin |
||
| 776 | Result := FFileMapFormat.FileMaps; |
||
| 777 | end; |
||
| 778 | |||
| 779 | function TDropFileTarget.GetPreferredDropEffect: LongInt; |
||
| 780 | begin |
||
| 781 | Result := inherited GetPreferredDropEffect; |
||
| 782 | if (Result = DROPEFFECT_NONE) then |
||
| 783 | Result := DROPEFFECT_COPY; |
||
| 784 | end; |
||
| 785 | |||
| 786 | |||
| 787 | //////////////////////////////////////////////////////////////////////////////// |
||
| 788 | // |
||
| 789 | // TDropFileSource |
||
| 790 | // |
||
| 791 | //////////////////////////////////////////////////////////////////////////////// |
||
| 792 | constructor TDropFileSource.Create(aOwner: TComponent); |
||
| 793 | begin |
||
| 794 | inherited Create(AOwner); |
||
| 795 | |||
| 796 | FFileFormat := TFileDataFormat.Create(Self); |
||
| 797 | FFileMapFormat := TFileMapDataFormat.Create(Self); |
||
| 798 | end; |
||
| 799 | |||
| 800 | destructor TDropFileSource.Destroy; |
||
| 801 | begin |
||
| 802 | FFileFormat.Free; |
||
| 803 | FFileMapFormat.Free; |
||
| 804 | inherited Destroy; |
||
| 805 | end; |
||
| 806 | |||
| 807 | function TDropFileSource.GetFiles: TStrings; |
||
| 808 | begin |
||
| 809 | Result := FFileFormat.Files; |
||
| 810 | end; |
||
| 811 | |||
| 812 | function TDropFileSource.GetMappedNames: TStrings; |
||
| 813 | begin |
||
| 814 | Result := FFileMapFormat.FileMaps; |
||
| 815 | end; |
||
| 816 | |||
| 817 | procedure TDropFileSource.SetFiles(AFiles: TStrings); |
||
| 818 | begin |
||
| 819 | FFileFormat.Files.Assign(AFiles); |
||
| 820 | end; |
||
| 821 | |||
| 822 | procedure TDropFileSource.SetMappedNames(ANames: TStrings); |
||
| 823 | begin |
||
| 824 | FFileMapFormat.FileMaps.Assign(ANames); |
||
| 825 | end; |
||
| 826 | |||
| 827 | |||
| 828 | //////////////////////////////////////////////////////////////////////////////// |
||
| 829 | // |
||
| 830 | // Initialization/Finalization |
||
| 831 | // |
||
| 832 | //////////////////////////////////////////////////////////////////////////////// |
||
| 833 | |||
| 834 | initialization |
||
| 835 | // Data format registration |
||
| 836 | TFileDataFormat.RegisterDataFormat; |
||
| 837 | TFileMapDataFormat.RegisterDataFormat; |
||
| 838 | // Clipboard format registration |
||
| 839 | TFileDataFormat.RegisterCompatibleFormat(TFileClipboardFormat, 0, csSourceTarget, [ddRead]); |
||
| 840 | TFileDataFormat.RegisterCompatibleFormat(TPIDLClipboardFormat, 1, csSourceTarget, [ddRead]); |
||
| 841 | TFileDataFormat.RegisterCompatibleFormat(TFilenameClipboardFormat, 2, csSourceTarget, [ddRead]); |
||
| 842 | TFileDataFormat.RegisterCompatibleFormat(TFilenameWClipboardFormat, 2, csSourceTarget, [ddRead]); |
||
| 843 | |||
| 844 | TFileMapDataFormat.RegisterCompatibleFormat(TFilenameMapClipboardFormat, 0, csSourceTarget, [ddRead]); |
||
| 845 | TFileMapDataFormat.RegisterCompatibleFormat(TFilenameMapWClipboardFormat, 0, csSourceTarget, [ddRead]); |
||
| 846 | |||
| 847 | finalization |
||
| 848 | // Data format unregistration |
||
| 849 | TFileDataFormat.UnregisterDataFormat; |
||
| 850 | TFileMapDataFormat.UnregisterDataFormat; |
||
| 851 | |||
| 852 | // Clipboard format unregistration |
||
| 853 | TFileClipboardFormat.UnregisterClipboardFormat; |
||
| 854 | TFilenameClipboardFormat.UnregisterClipboardFormat; |
||
| 855 | TFilenameWClipboardFormat.UnregisterClipboardFormat; |
||
| 856 | TFilenameMapClipboardFormat.UnregisterClipboardFormat; |
||
| 857 | TFilenameMapWClipboardFormat.UnregisterClipboardFormat; |
||
| 858 | end. |