david
637d8e92fd
git-svn-id: https://192.168.0.254/svn/Componentes.Terceros.DevExpressVCL@26 05c56307-c608-d34a-929d-697000501d7a
633 lines
20 KiB
ObjectPascal
633 lines
20 KiB
ObjectPascal
unit main;
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interface
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{$I ..\cxVer.inc}
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uses
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SysUtils, Classes, Graphics, Controls, Dialogs, StdCtrls, Forms, DB, DBTables,
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Grids, DBGrids, ExtCtrls, ComCtrls, ToolWin, Menus, ImgList, dxPSCore,
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dxPSDBBasedXplorer, dxPSXplorerTreeView, dxPSGlbl, dxPSUtl, dxPSEngn, dxPrnPg,
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dxBkgnd, dxWrap, dxPrnDev, dxExtCtrls, dxPSCompsProvider, dxPSFillPatterns,
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dxPSEdgePatterns, dxPSTVLnk, dxPSBaseGridLnk, dxPSGrLnks, dxPSStdGrLnk,
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dxPSShapes, dxPSContainerLnk { Generic Container }
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{ uncomment to use with dxBars }
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//, dxPSPrVwAdv
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{Follow units have to be added if you want to support all types of saved reports,
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i.e. reports that were created from all types of ReportLinks.
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These units contain registration information for all item types used to create them
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You must own appropriate Developer Express Inc. Control Librraies }
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//, dxPScxSSLnk { cxSpreadSheet }
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//{$IFDEF DELPHI5}, dxPSdxLCLnk {$ENDIF} { dxLayoutControl }
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//, dxPScxCommon, dxPScxExtCommon, dxPScxGrid6Lnk { cxGrid, cxTreeList, cxVerticalGrid and any others cx-family products }
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;
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type
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TfmMain = class;
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TdxFormExplorerChangeNotifier = class(TdxPSExplorerChangeNotifierAdapter)
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private
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FForm: TfmMain;
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protected
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procedure ItemDataLoaded(AnItem: TdxPSExplorerItem); override;
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procedure ItemDataUnloaded(AnItem: TdxPSExplorerItem); override;
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public
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constructor Create(AForm: TfmMain);
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property Form: TfmMain read FForm;
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end;
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TfmMain = class(TForm, {$IFNDEF DELPHI6} IUnknown, {$ENDIF} IdxPSExplorerTreeContainerHost, IdxPSExplorerContextCommandBuilder)
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Explorer: TdxPSDBBasedExplorer;
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dsFolders: TDataSource;
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dsItems: TDataSource;
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tblFolders: TTable;
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tblItems: TTable;
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Label1: TLabel;
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tblFoldersID: TAutoIncField;
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tblFoldersParentID: TIntegerField;
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tblFoldersName: TStringField;
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tblItemsID: TAutoIncField;
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tblItemsParentID: TIntegerField;
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tblItemsName: TStringField;
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tblItemsData: TBlobField;
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ToolBar1: TToolBar;
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tbFileLoad: TToolButton;
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tbFileClose: TToolButton;
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tbFilePageSetup: TToolButton;
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MainMenu: TMainMenu;
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miFile: TMenuItem;
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miFileLoad: TMenuItem;
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miFileClose: TMenuItem;
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miLine30: TMenuItem;
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miFilePrint: TMenuItem;
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miFilePageSetup: TMenuItem;
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miLine3: TMenuItem;
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miFileExit: TMenuItem;
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miExplorer: TMenuItem;
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miExplorerCreateNewFolder: TMenuItem;
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miLine31: TMenuItem;
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miExplorerDelete: TMenuItem;
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miExplorerRename: TMenuItem;
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miLine39: TMenuItem;
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miExplorerProperties: TMenuItem;
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miFilePreview: TMenuItem;
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tbFilePreview: TToolButton;
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tbFilePrint: TToolButton;
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tbExplorerFolderCreate: TToolButton;
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ToolButton7: TToolButton;
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tbExplorerDelete: TToolButton;
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tbExplorerProperties: TToolButton;
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ToolButton11: TToolButton;
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ilToolBar: TImageList;
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pmExplorer: TPopupMenu;
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pmiExplorerLoadData: TMenuItem;
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pmiExplorerUnloadData: TMenuItem;
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miLine33: TMenuItem;
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pmiExplorerCreateFolder: TMenuItem;
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miLine34: TMenuItem;
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pmiExplorerDelete: TMenuItem;
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pmiExplorerRename: TMenuItem;
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miLine40: TMenuItem;
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pmiExplorerProperties: TMenuItem;
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pnlExplorerTreeHost: TPanel;
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Splitter1: TSplitter;
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TreeChangeTimer: TTimer;
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ComponentPrinter: TdxComponentPrinter;
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Stub: TdxStringGridReportLink;
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procedure Button1Click(Sender: TObject);
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procedure FilePreviewClick(Sender: TObject);
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procedure FilePageSetupClick(Sender: TObject);
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procedure FileExitClick(Sender: TObject);
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procedure FilePrintClick(Sender: TObject);
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procedure ExplorerCreateNewFolderClick(Sender: TObject);
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procedure ExplorerDeleteItemClick(Sender: TObject);
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procedure ExplorerItemShowPropertySheetsClick(Sender: TObject);
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procedure ExplorerLoadItemDataClick(Sender: TObject);
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procedure ExplorerRenameItemClick(Sender: TObject);
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procedure ExplorerUnloadItemDataClick(Sender: TObject);
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procedure pmExplorerPopup(Sender: TObject);
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procedure TreeChangeTimerTimer(Sender: TObject);
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procedure FormCreate(Sender: TObject);
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procedure ExplorerItemDataLoadError(Sender: TCustomdxPSExplorer;
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AnItem: TdxPSExplorerItem; var AShowErrorMessage: Boolean;
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var AText: String);
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private
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FExplorerChangeNotifier: TdxFormExplorerChangeNotifier;
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FExplorerContextCommandMenuItems: TList;
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FExplorerContextCommandPopupMenuItems: TList;
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FExplorerContextCommandToolButtons: TList;
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FExplorerTree: TdxPSExplorerTreeViewContainer;
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FLastSelectedItem: TCustomdxPSExplorerItem;
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FPreviewBox: TdxPSImageScrollBox;
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FReportDocument: TdxPSReportDocument;
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function GetExplorerContextCommandMenuItem(Index: Integer): TMenuItem;
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function GetExplorerContextCommandMenuItemCount: Integer;
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function GetExplorerContextCommandPopupMenuItem(Index: Integer): TMenuItem;
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function GetExplorerContextCommandPopupMenuItemCount: Integer;
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function GetExplorerContextCommandToolButton(Index: Integer): TToolButton;
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function GetExplorerContextCommandToolButtonCount: Integer;
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function GetIsReportItemSelected: Boolean;
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function GetIsReportValid: Boolean;
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function GetPreviewGraphic: TGraphic;
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procedure AssignDataSets;
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procedure CreateExplorerTree;
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procedure CreatePreviewBox;
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function IsSelectedItemLoaded: Boolean;
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procedure LoadItemPreview(AnItem: TdxPSExplorerItem);
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procedure UpdateControls;
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procedure DoExplorerTreeChange(Sender: TObject; ANode: TTreeNode);
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procedure DoExplorerTreeDblClick(Sender: TObject);
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procedure DoShowExplorerPopup(Sender: TObject; Button: TMouseButton;
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Shift: TShiftState; X, Y: Integer);
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protected
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{$IFNDEF DELPHI6}
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{ IUnknown }
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function QueryInterface(const IID: TGUID; out Obj): HResult; override;
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function _AddRef: Integer; stdcall;
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function _Release: Integer; stdcall;
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{$ENDIF}
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{ IdxPSExplorerTreeContainerHost }
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function GetFlat: Boolean;
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function GetReportLink: TBasedxReportLink;
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function GetTreeContainerParent: TWinControl;
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procedure UpdateState;
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procedure AddExplorerContextCommand(ACommand: TCustomdxPSExplorerContextCommand); virtual;
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procedure UpdateExplorerContextCommands; virtual;
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procedure ExplorerContextCommandClick(Sender: TObject);
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property ExplorerContextCommandMenuItemCount: Integer read GetExplorerContextCommandMenuItemCount;
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property ExplorerContextCommandMenuItems[Index: Integer]: TMenuItem read GetExplorerContextCommandMenuItem;
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property ExplorerContextCommandPopupMenuItemCount: Integer read GetExplorerContextCommandPopupMenuItemCount;
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property ExplorerContextCommandPopupMenuItems[Index: Integer]: TMenuItem read GetExplorerContextCommandPopupMenuItem;
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property ExplorerContextCommandToolButtonCount: Integer read GetExplorerContextCommandToolButtonCount;
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property ExplorerContextCommandToolButtons[Index: Integer]: TToolButton read GetExplorerContextCommandToolButton;
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property ExplorerTree: TdxPSExplorerTreeViewContainer read FExplorerTree;
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property LastSelectedItem: TCustomdxPSExplorerItem read FLastSelectedItem write FLastSelectedItem;
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property PreviewBox: TdxPSImageScrollBox read FPreviewBox;
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property PreviewGraphic: TGraphic read GetPreviewGraphic;
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property ReportDocument: TdxPSReportDocument read FReportDocument;
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy; override;
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property IsReportItemSelected: Boolean read GetIsReportItemSelected;
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property IsReportValid: Boolean read GetIsReportValid;
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end;
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var
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fmMain: TfmMain;
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implementation
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{$R *.dfm}
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uses
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Windows, dxPSRes;
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{ TdxFormExplorerChangeNotifier }
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constructor TdxFormExplorerChangeNotifier.Create(AForm: TfmMain);
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begin
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inherited Create(AForm.Explorer);
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FForm := AForm;
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end;
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procedure TdxFormExplorerChangeNotifier.ItemDataLoaded(AnItem: TdxPSExplorerItem);
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begin
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Form.UpdateControls;
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end;
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procedure TdxFormExplorerChangeNotifier.ItemDataUnloaded(AnItem: TdxPSExplorerItem);
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begin
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Form.UpdateControls;
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end;
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constructor TfmMain.Create(AOwner: TComponent);
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begin
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FExplorerContextCommandMenuItems := TList.Create;
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FExplorerContextCommandPopupMenuItems := TList.Create;
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FExplorerContextCommandToolButtons := TList.Create;
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inherited;
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end;
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destructor TfmMain.Destroy;
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begin
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FreeAndNil(FReportDocument);
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FreeAndNil(FExplorerChangeNotifier);
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ExplorerUnloadItemDataClick(nil);
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FreeAndNil(FExplorerContextCommandToolButtons);
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FreeAndNil(FExplorerContextCommandPopupMenuItems);
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FreeAndNil(FExplorerContextCommandMenuItems);
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FreeAndNil(FExplorerTree);
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inherited;
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end;
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procedure TfmMain.Button1Click(Sender: TObject);
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begin
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end;
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{$IFNDEF DELPHI6}
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function TfmMain.QueryInterface(const IID: TGUID; out Obj): HResult;
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begin
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if GetInterface(IID, Obj) then
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Result := S_OK
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else
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Result := E_NOINTERFACE
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end;
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function TfmMain._AddRef: Integer;
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begin
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Result := -1;
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end;
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function TfmMain._Release: Integer;
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begin
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Result := -1;
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end;
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{$ENDIF}
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function TfmMain.GetFlat: Boolean;
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begin
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Result := False;
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end;
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procedure TfmMain.DoExplorerTreeDblClick(Sender: TObject);
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begin
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LastSelectedItem := ExplorerTree.SelectedItem;
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TreeChangeTimerTimer(TreeChangeTimer);
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end;
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function TfmMain.GetReportLink: TBasedxReportLink;
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begin
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Result := ComponentPrinter.CurrentLink;
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end;
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function TfmMain.GetTreeContainerParent: TWinControl;
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begin
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Result := pnlExplorerTreeHost;
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end;
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procedure TfmMain.UpdateState;
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begin
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UpdateControls;
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end;
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procedure TfmMain.AddExplorerContextCommand(ACommand: TCustomdxPSExplorerContextCommand);
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function IsCommandSeparator(ACommand: TCustomdxPSExplorerContextCommand): Boolean;
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begin
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Result := ACommand is TdxPSExplorerContextCommandSeparator;
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end;
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function AddExplorerContextCommandMenuItem(AParent: TMenuItem; ACommand: TCustomdxPSExplorerContextCommand): TMenuItem;
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begin
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Result := TMenuItem.Create(Self);
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with Result do
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begin
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Bitmap := ACommand.Bitmap;
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Caption := ACommand.Caption;
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Enabled := ACommand.Enabled;
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Hint := ACommand.Hint;
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ShortCut := ACommand.ShortCut;
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Tag := Integer(ACommand);
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OnClick := ExplorerContextCommandClick;
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end;
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AParent.Insert(0, Result);
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end;
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var
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MenuItem: TMenuItem;
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begin
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MenuItem := AddExplorerContextCommandMenuItem(pmExplorer.Items, ACommand);
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if not IsCommandSeparator(ACommand) and (FExplorerContextCommandPopupMenuItems.IndexOf(MenuItem) = -1) then
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FExplorerContextCommandPopupMenuItems.Add(MenuItem);
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MenuItem := AddExplorerContextCommandMenuItem(miExplorer, ACommand);
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if not IsCommandSeparator(ACommand) and (FExplorerContextCommandMenuItems.IndexOf(MenuItem) = -1) then
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FExplorerContextCommandMenuItems.Add(MenuItem);
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end;
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procedure TfmMain.UpdateExplorerContextCommands;
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procedure UpdateMenuItems;
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var
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I: Integer;
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begin
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for I := 0 to ExplorerContextCommandMenuItemCount - 1 do
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with ExplorerContextCommandMenuItems[I] do
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Enabled := TCustomdxPSExplorerContextCommand(Tag).Enabled;
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end;
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procedure UpdatePopupMenuItems;
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var
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I: Integer;
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begin
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for I := 0 to ExplorerContextCommandPopupMenuItemCount - 1 do
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with ExplorerContextCommandPopupMenuItems[I] do
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Enabled := TCustomdxPSExplorerContextCommand(Tag).Enabled;
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end;
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procedure UpdateToolButtons;
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var
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I: Integer;
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begin
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for I := 0 to ExplorerContextCommandToolButtonCount - 1 do
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with ExplorerContextCommandToolButtons[I] do
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Enabled := TCustomdxPSExplorerContextCommand(Tag).Enabled;
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end;
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begin
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if not (csDestroying in ComponentState) then
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begin
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UpdateMenuItems;
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UpdatePopupMenuItems;
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UpdateToolButtons;
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end;
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end;
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procedure TfmMain.ExplorerContextCommandClick(Sender: TObject);
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var
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Command: TCustomdxPSExplorerContextCommand;
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begin
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Command := TCustomdxPSExplorerContextCommand(TMenuItem(Sender).Tag);
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if Command.Enabled then
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Command.Execute;
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end;
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function TfmMain.GetExplorerContextCommandMenuItem(Index: Integer): TMenuItem;
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begin
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Result := FExplorerContextCommandMenuItems.Items[Index];
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end;
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function TfmMain.GetExplorerContextCommandMenuItemCount: Integer;
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begin
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Result := FExplorerContextCommandMenuItems.Count;
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end;
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function TfmMain.GetExplorerContextCommandPopupMenuItem(Index: Integer): TMenuItem;
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begin
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Result := FExplorerContextCommandPopupMenuItems.Items[Index];
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end;
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function TfmMain.GetExplorerContextCommandPopupMenuItemCount: Integer;
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begin
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Result := FExplorerContextCommandPopupMenuItems.Count;
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end;
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function TfmMain.GetExplorerContextCommandToolButton(Index: Integer): TToolButton;
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begin
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Result := FExplorerContextCommandToolButtons.Items[Index];
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end;
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function TfmMain.GetExplorerContextCommandToolButtonCount: Integer;
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begin
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Result := FExplorerContextCommandToolButtons.Count;
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end;
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function TfmMain.GetIsReportItemSelected: Boolean;
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begin
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Result := ExplorerTree.SelectedItem is TdxPSExplorerItem;
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end;
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function TfmMain.GetIsReportValid: Boolean;
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begin
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Result := PreviewGraphic <> nil;
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end;
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function TfmMain.GetPreviewGraphic: TGraphic;
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begin
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if ReportDocument <> nil then
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Result := ReportDocument.Preview
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else
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Result := nil;
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end;
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procedure TfmMain.AssignDataSets;
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begin
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tblFolders.Close;
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tblFolders.DatabaseName := ExtractFilePath(Application.ExeName) + '..\..\Data';
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tblFolders.Open;
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tblItems.Close;
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tblItems.DatabaseName := ExtractFilePath(Application.ExeName) + '..\..\Data';
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tblItems.Open;
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end;
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procedure TfmMain.CreateExplorerTree;
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var
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ExplorerTreeContainerHost: IdxPSExplorerTreeContainerHost;
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ExplorerContextCommands: IdxPSExplorerContextCommands;
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ExplorerContextCommandBuilder: IdxPSExplorerContextCommandBuilder;
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begin
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if Self.GetInterface(IdxPSExplorerTreeContainerHost, ExplorerTreeContainerHost) then
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begin
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FExplorerTree := Explorer.CreateTree(ExplorerTreeContainerHost) as TdxPSExplorerTreeViewContainer;
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ExplorerTree.TreeView.OnChange := DoExplorerTreeChange;
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ExplorerTree.TreeView.OnDblClick := DoExplorerTreeDblClick;
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ExplorerTree.TreeView.OnMouseUp := DoShowExplorerPopup;
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Explorer.BuildTree(ExplorerTree);
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FExplorerChangeNotifier := TdxFormExplorerChangeNotifier.Create(Self);
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end;
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if Explorer.GetInterface(IdxPSExplorerContextCommands, ExplorerContextCommands) and
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Self.GetInterface(IdxPSExplorerContextCommandBuilder, ExplorerContextCommandBuilder) then
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ExplorerContextCommands.BuildCommandSet(ExplorerContextCommandBuilder);
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end;
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procedure TfmMain.CreatePreviewBox;
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begin
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FPreviewBox := TdxPSImageScrollBox.Create(Self);
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with FPreviewBox do
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begin
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Parent := Self;
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Align := alClient;
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Visible := True;//}False;
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end;
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end;
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procedure TfmMain.DoExplorerTreeChange(Sender: TObject; ANode: TTreeNode);
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begin
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TreeChangeTimer.Enabled := False;
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LastSelectedItem := ExplorerTree.SelectedItem;
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TreeChangeTimer.Enabled := True;
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end;
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procedure TfmMain.DoShowExplorerPopup(Sender: TObject; Button: TMouseButton;
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Shift: TShiftState; X, Y: Integer);
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begin
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if Button = mbRight then
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pmExplorer.Popup(Mouse.CursorPos.X, Mouse.CursorPos.Y);
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end;
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function TfmMain.IsSelectedItemLoaded: Boolean;
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begin
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ExplorerTree.LoadSelectedItemData;
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Result := ExplorerTree.IsSelectedItemCurrentlyLoaded;
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end;
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procedure TfmMain.LoadItemPreview(AnItem: TdxPSExplorerItem);
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var
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Stream: TStream;
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begin
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FreeAndNil(FReportDocument);
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Stream := AnItem.CreateDataStream(smRead);
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if Stream <> nil then
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try
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try
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FReportDocument := TBasedxReportLink.ExtractReportDocument(Stream, False);
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except
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FReportDocument := nil;
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end;
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finally
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Stream.Free;
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end;
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UpdateControls;
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end;
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procedure TfmMain.UpdateControls;
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begin
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if csDestroying in ComponentState then
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Exit;
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miFileLoad.Enabled := ExplorerTree.CanLoadSelectedItemData;
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miFileClose.Enabled := ExplorerTree.CanUnloadItemData;
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miFilePageSetup.Enabled := IsReportItemSelected;
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miFilePreview.Enabled := IsReportItemSelected;
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miFilePrint.Enabled := IsReportItemSelected;
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miExplorerCreateNewFolder.Enabled := ExplorerTree.CanCreateFolder;
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miExplorerDelete.Enabled := ExplorerTree.CanDeleteSelection;
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miExplorerRename.Enabled := ExplorerTree.CanRenameSelectedItem;
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miExplorerProperties.Enabled := ExplorerTree.CanShowPropertySheetsForSelectedItem;
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tbFileLoad.Enabled := ExplorerTree.CanLoadSelectedItemData;
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tbFileClose.Enabled := ExplorerTree.CanUnloadItemData;
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tbFilePageSetup.Enabled := IsReportItemSelected;
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tbFilePreview.Enabled := IsReportItemSelected;
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|
tbFilePrint.Enabled := IsReportItemSelected;
|
|
tbExplorerFolderCreate.Enabled := ExplorerTree.CanCreateFolder;
|
|
tbExplorerDelete.Enabled := ExplorerTree.CanDeleteSelection;
|
|
tbExplorerProperties.Enabled := ExplorerTree.CanShowPropertySheetsForSelectedItem;
|
|
|
|
PreviewBox.Enabled := IsReportValid;
|
|
PreviewBox.Picture.Assign(PreviewGraphic);
|
|
if IsReportValid then
|
|
PreviewBox.HintText := ''
|
|
else
|
|
PreviewBox.HintText := sdxNone;
|
|
end;
|
|
|
|
procedure TfmMain.FormCreate(Sender: TObject);
|
|
begin
|
|
AssignDataSets;
|
|
CreatePreviewBox;
|
|
CreateExplorerTree;
|
|
ActiveControl := ExplorerTree.TreeView;
|
|
end;
|
|
|
|
procedure TfmMain.FilePageSetupClick(Sender: TObject);
|
|
begin
|
|
if IsSelectedItemLoaded then
|
|
ComponentPrinter.PageSetup(nil);
|
|
end;
|
|
|
|
procedure TfmMain.FilePreviewClick(Sender: TObject);
|
|
begin
|
|
if IsSelectedItemLoaded then
|
|
ComponentPrinter.Preview;
|
|
end;
|
|
|
|
procedure TfmMain.FilePrintClick(Sender: TObject);
|
|
begin
|
|
if IsSelectedItemLoaded then
|
|
ComponentPrinter.Print(True, nil, nil);
|
|
end;
|
|
|
|
procedure TfmMain.FileExitClick(Sender: TObject);
|
|
begin
|
|
Close;
|
|
end;
|
|
|
|
procedure TfmMain.ExplorerCreateNewFolderClick(Sender: TObject);
|
|
begin
|
|
if ExplorerTree.CanCreateFolder then
|
|
Explorer.CreateNewFolder(ExplorerTree.CreationParent);
|
|
end;
|
|
|
|
procedure TfmMain.ExplorerDeleteItemClick(Sender: TObject);
|
|
begin
|
|
ExplorerTree.DeleteSelection;
|
|
end;
|
|
|
|
procedure TfmMain.ExplorerItemShowPropertySheetsClick(Sender: TObject);
|
|
begin
|
|
ExplorerTree.ShowSelectedItemPropertySheets;
|
|
end;
|
|
|
|
procedure TfmMain.ExplorerLoadItemDataClick(Sender: TObject);
|
|
begin
|
|
if ExplorerTree.CanLoadSelectedItemData then
|
|
ExplorerTree.LoadSelectedItemData
|
|
end;
|
|
|
|
procedure TfmMain.ExplorerRenameItemClick(Sender: TObject);
|
|
begin
|
|
ExplorerTree.BeginEdit;
|
|
end;
|
|
|
|
procedure TfmMain.ExplorerUnloadItemDataClick(Sender: TObject);
|
|
begin
|
|
if ExplorerTree.CanUnloadItemData then
|
|
ExplorerTree.UnloadItemData
|
|
end;
|
|
|
|
procedure TfmMain.pmExplorerPopup(Sender: TObject);
|
|
begin
|
|
UpdateExplorerContextCommands;
|
|
pmiExplorerLoadData.Enabled := ExplorerTree.CanLoadSelectedItemData;
|
|
pmiExplorerUnloadData.Enabled := ExplorerTree.CanUnloadItemData;
|
|
pmiExplorerCreateFolder.Enabled := ExplorerTree.CanCreateFolder;
|
|
pmiExplorerDelete.Enabled := ExplorerTree.CanDeleteSelection;
|
|
pmiExplorerRename.Enabled := ExplorerTree.CanRenameSelectedItem;
|
|
pmiExplorerProperties.Enabled := ExplorerTree.CanShowPropertySheetsForSelectedItem;
|
|
end;
|
|
|
|
procedure TfmMain.TreeChangeTimerTimer(Sender: TObject);
|
|
var
|
|
Item: TCustomdxPSExplorerItem;
|
|
begin
|
|
Item := ExplorerTree.SelectedItem;
|
|
if (Item = LastSelectedItem) and (Item is TdxPSExplorerItem) and not TdxPSExplorerItem(Item).IsCurrentlyLoaded then
|
|
begin
|
|
TTimer(Sender).Enabled := False;
|
|
LoadItemPreview(TdxPSExplorerItem(Item));
|
|
end;
|
|
end;
|
|
|
|
procedure TfmMain.ExplorerItemDataLoadError(Sender: TCustomdxPSExplorer;
|
|
AnItem: TdxPSExplorerItem; var AShowErrorMessage: Boolean;
|
|
var AText: String);
|
|
const
|
|
CRLF = #13#10;
|
|
ErrorText: string = 'Cannot Load Item "%s".' + CRLF +
|
|
'You should uncomment appropriate units in "uses" clause.' + CRLF +
|
|
CRLF +
|
|
'Please read ReadMe.txt.';
|
|
begin
|
|
AShowErrorMessage := True;
|
|
AText := Format(ErrorText, [TdxPSDBBasedExplorerItem(AnItem).Name]);
|
|
end;
|
|
|
|
end.
|