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tony |
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(*
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* IBX For Lazarus (Firebird Express)
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*
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* The contents of this file are subject to the Initial Developer's
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* Public License Version 1.0 (the "License"); you may not use this
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* file except in compliance with the License. You may obtain a copy
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* of the License here:
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*
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* http://www.firebirdsql.org/index.php?op=doc&id=idpl
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing rights
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* and limitations under the License.
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*
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* The Initial Developer of the Original Code is Tony Whyman.
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*
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tony |
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* The Original Code is (C) 2015 Tony Whyman, MWA Software
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tony |
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* (http://www.mwasoftware.co.uk).
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*
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* All Rights Reserved.
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*
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* Contributor(s): ______________________________________.
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*
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*)
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tony |
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tony |
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unit IBDynamicGrid;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs, DBGrids, DB,
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tony |
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IBSQLParser, Grids, IBLookupComboEditBox, LMessages, StdCtrls, ExtCtrls,
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IBCustomDataSet;
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tony |
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type
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{
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TIBDynamicGrid is a TDBGrid descendent that provides for:
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- automatic resizing of selected columns to fill the available row length
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- automatic positioning and sizing of a "totals" control, typically at the
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column footer, on a per column basis.
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- DataSet resorting on header row click, sorting the dataset by the selected column.
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A second click on the same header cell reversed the sort order.
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- Reselection of the same row following resorting.
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- A new cell editor that provides the same functionality as TIBLookupComboEditBox.
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Its properties are specified on a per column basis and allows for one or more
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columns to have their values selected from a list provided by a dataset.
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Autocomplete and autoinsert are also available. The existing picklist editor
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is unaffected by the extension.
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}
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TIBDynamicGrid = class;
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TOnColumnHeaderClick = procedure(Sender: TObject; var ColIndex: integer) of object;
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TOnUpdateSortOrder = procedure (Sender: TObject; ColIndex: integer; var OrderBy: string) of Object;
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TKeyDownHandler = procedure (Sender: TObject; var Key: Word; Shift: TShiftState; var Done: boolean) of object;
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{ TDBDynamicGridColumn }
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TDBDynamicGridColumn = class(TColumn)
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private
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FAutoSizeColumn: boolean;
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FColumnTotalsControl: TControl;
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FDesignWidth: integer;
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function GetWidth: integer;
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procedure SetWidth(AValue: integer);
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public
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property DesignWidth: integer read FDesignWidth;
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published
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property ColumnTotalsControl: TControl read FColumnTotalsControl write FColumnTotalsControl;
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property AutoSizeColumn: boolean read FAutoSizeColumn write FAutoSizeColumn;
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property Width: integer read GetWidth write SetWidth;
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end;
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TIBDynamicGridColumn = class;
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{ TDBLookupProperties }
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TDBLookupProperties = class(TPersistent)
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private
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FAutoComplete: boolean;
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FAutoCompleteText: TComboBoxAutoCompleteText;
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FAutoInsert: boolean;
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FDataFieldName: string;
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FItemHeight: integer;
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FItemWidth: integer;
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FKeyField: string;
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FKeyPressInterval: integer;
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FListField: string;
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FListSource: TDataSource;
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FOnAutoInsert: TAutoInsert;
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FOnCanAutoInsert: TCanAutoInsert;
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FOnCloseUp: TNotifyEvent;
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FOnDrawItem: TDrawItemEvent;
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FOwner: TIBDynamicGridColumn;
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FRelationName: string;
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FStyle: TComboBoxStyle;
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function GetAutoCompleteText: TComboBoxAutoCompleteText;
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procedure SetAutoCompleteText(AValue: TComboBoxAutoCompleteText);
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public
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constructor Create(aOwner: TIBDynamicGridColumn);
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property Owner: TIBDynamicGridColumn read FOwner;
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published
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property DataFieldName: string read FDataFieldName write FDataFieldName;
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property KeyField: string read FKeyField write FKeyField;
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property ItemHeight: integer read FItemHeight write FItemHeight;
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property ItemWidth: integer read FItemWidth write FItemWidth;
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property ListSource: TDataSource read FListSource write FListSource;
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property ListField: string read FListField write FListField;
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property AutoInsert: boolean read FAutoInsert write FAutoInsert default true;
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property AutoComplete: boolean read FAutoComplete write FAutoComplete default true;
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property AutoCompleteText: TComboBoxAutoCompleteText
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read GetAutoCompleteText write SetAutoCompleteText
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default DefaultComboBoxAutoCompleteText;
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property KeyPressInterval: integer read FKeyPressInterval write FKeyPressInterval default 500;
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property RelationName: string read FRelationName write FRelationName;
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property Style: TComboBoxStyle read FStyle write FStyle default csDropDown;
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property OnAutoInsert: TAutoInsert read FOnAutoInsert write FOnAutoInsert;
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property OnCanAutoInsert: TCanAutoInsert read FOnCanAutoInsert write FOnCanAutoInsert;
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property OnCloseUp: TNotifyEvent read FOnCloseUp write FOnCloseUp;
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property OnDrawItem: TDrawItemEvent read FOnDrawItem write FOnDrawItem;
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end;
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TDBLookupCellEditor = class;
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{ TIBDynamicGridColumn }
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TIBDynamicGridColumn = class(TDBDynamicGridColumn)
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private
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FDBLookupProperties: TDBLookupProperties;
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FInitialSortColumn: boolean;
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procedure DoSetupEditor(Data: PtrInt);
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procedure DoSetDataSources(Data: PtrInt);
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procedure SetInitialSortColumn(AValue: boolean);
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public
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procedure SetupEditor(Editor: TDBlookupCellEditor);
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constructor Create(ACollection: TCollection); override;
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destructor Destroy; override;
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published
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property InitialSortColumn: boolean read FInitialSortColumn write SetInitialSortColumn;
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property DBLookupProperties: TDBLookupProperties read FDBLookupProperties write FDBLookupProperties;
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end;
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{ TDBLookupCellEditor }
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TDBLookupCellEditor = class(TIBLookupComboEditBox)
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private
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FGrid: TCustomGrid;
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FCol,FRow: Integer;
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FEditText: string;
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tony |
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function EditingKeyField: boolean;
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protected
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procedure WndProc(var TheMessage : TLMessage); override;
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procedure CloseUp; override;
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procedure KeyDown(var Key : Word; Shift : TShiftState); override;
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procedure Loaded; override;
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procedure msg_GetValue(var Msg: TGridMessage); message GM_GETVALUE;
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procedure msg_SetGrid(var Msg: TGridMessage); message GM_SETGRID;
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procedure msg_SetValue(var Msg: TGridMessage); message GM_SETVALUE;
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procedure msg_SetPos(var Msg: TGridMessage); message GM_SETPOS;
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procedure msg_GetGrid(var Msg: TGridMessage); message GM_GETGRID;
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public
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procedure EditingDone; override;
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property BorderStyle;
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property OnEditingDone;
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end;
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TOnSelectPanelEditor = procedure(Sender: TObject; var aEditorPanel: TWinControl) of object;
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TDBDynamicGrid = class(TDBGrid)
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private
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{ Private declarations }
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FExpandEditorPanelBelowRow: boolean;
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FEditorPanel: TWinControl;
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FExpandedRow: integer;
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FOnBeforeEditorHide: TNotifyEvent;
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FOnEditorPanelHide: TNotifyEvent;
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FOnEditorPanelShow: TNotifyEvent;
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FOnKeyDownHander: TKeyDownHandler;
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FOnSelectPanelEditor: TOnSelectPanelEditor;
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FResizing: boolean;
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FWeHaveFocus: boolean;
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FHidingEditorPanel: boolean;
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FAllowHide: boolean;
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FMouseDown: boolean;
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function ActiveControl: TControl;
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procedure DoShowEditorPanel(Data: PtrInt);
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procedure PositionTotals;
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procedure KeyDownHandler(Sender: TObject; var Key: Word; Shift: TShiftState);
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procedure PerformEditorHide(Data: PtrInt);
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procedure SetEditorPanel(AValue: TWinControl);
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protected
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procedure ChangeBounds(ALeft, ATop, AWidth, AHeight: integer; KeepBase: boolean); override;
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procedure DoEnter; override;
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procedure DoExit; override;
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procedure DoGridResize;
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procedure DoEditorHide; override;
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procedure DoEditorShow; override;
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procedure DrawCellText(aCol,aRow: Integer; aRect: TRect; aState: TGridDrawState; aText: String); override;
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Function EditingAllowed(ACol : Integer = -1) : Boolean; override;
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procedure EditorHide; override;
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procedure IndicatorClicked(Button: TMouseButton; Shift:TShiftState); virtual;
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procedure KeyDown(var Key : Word; Shift : TShiftState); override;
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procedure Loaded; override;
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procedure DoOnResize; override;
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function CreateColumns: TGridColumns; override;
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procedure HeaderSized(IsColumn: Boolean; Index: Integer); override;
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procedure MouseDown(Button: TMouseButton; Shift:TShiftState; X,Y:Integer); override;
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procedure Notification(AComponent: TComponent; Operation: TOperation); override;
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procedure TopLeftChanged; override;
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procedure UpdateActive; override;
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procedure UpdateEditorPanelBounds;
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procedure UpdateShowing; override;
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public
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procedure HideEditorPanel;
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procedure ShowEditorPanel;
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constructor Create(TheComponent: TComponent); override;
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destructor Destroy ;override;
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procedure ResizeColumns;
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property VisibleRowCount;
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published
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property EditorPanel: TWinControl read FEditorPanel write SetEditorPanel;
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property ExpandEditorPanelBelowRow: boolean read FExpandEditorPanelBelowRow write FExpandEditorPanelBelowRow;
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property OnBeforeEditorHide: TNotifyEvent read FOnBeforeEditorHide write FOnBeforeEditorHide;
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property OnEditorPanelShow: TNotifyEvent read FOnEditorPanelShow write FOnEditorPanelShow;
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property OnEditorPanelHide: TNotifyEvent read FOnEditorPanelHide write FOnEditorPanelHide;
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property OnKeyDownHander: TKeyDownHandler read FOnKeyDownHander write FOnKeyDownHander;
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property OnSelectPanelEditor: TOnSelectPanelEditor read FOnSelectPanelEditor
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write FOnSelectPanelEditor;
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end;
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{TIBGridControlLink}
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TIBGridControlLink = class(TIBControlLink)
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private
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FOwner: TIBDynamicGrid;
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protected
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procedure UpdateSQL(Sender: TObject); override;
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public
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constructor Create(AOwner: TIBDynamicGrid);
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end;
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TLocationArray = array of variant;
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PLocationArray = ^TLocationArray;
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TOnRestorePosition = procedure(Sender: TObject; Location: PLocationArray) of object;
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tony |
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{ TIBDynamicGrid }
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TIBDynamicGrid = class(TDBDynamicGrid)
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private
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{ Private declarations }
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FAllowColumnSort: boolean;
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FIBControlLink: TIBGridControlLink;
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FOnColumnHeaderClick: TOnColumnHeaderClick;
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FOnRestorePosition: TOnRestorePosition;
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FOnUpdateSortOrder: TOnUpdateSortOrder;
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FDefaultPositionAtEnd: boolean;
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FDescending: boolean;
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FColHeaderClick: boolean;
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FLastColIndex: integer;
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FIndexFieldNames: string;
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FIndexFieldsList: TStringList;
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FBookmark: TLocationArray;
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FDBLookupCellEditor: TDBLookupCellEditor;
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FActive: boolean;
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FFieldPosition: integer;
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procedure ColumnHeaderClick(Index: integer);
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function GetDataSource: TDataSource;
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function GetEditorBorderStyle: TBorderStyle;
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procedure IBControlLinkChanged;
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procedure SetDataSource(AValue: TDataSource);
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procedure SetEditorBorderStyle(AValue: TBorderStyle);
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procedure ProcessColumns;
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procedure SetIndexFieldNames(AValue: string);
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procedure UpdateSQL(Sender: TObject; Parser: TSelectSQLParser);
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procedure UpdateSortColumn(Sender: TObject);
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procedure RestorePosition;
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procedure SavePosition;
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procedure DoReOpen(Data: PtrInt);
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procedure SetupEditor(aEditor: TDBLookupCellEditor; aCol: integer);
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protected
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{ Protected declarations }
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procedure DoEditorHide; override;
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procedure Loaded; override;
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function CreateColumns: TGridColumns; override;
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procedure MouseDown(Button: TMouseButton; Shift:TShiftState; X,Y:Integer); override;
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procedure LinkActive(Value: Boolean); override;
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procedure MoveSelection; override;
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procedure Notification(AComponent: TComponent; Operation: TOperation); override;
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procedure UpdateActive; override;
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public
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{ Public declarations }
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constructor Create(TheComponent: TComponent); override;
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destructor Destroy; override;
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function EditorByStyle(Style: TColumnButtonStyle): TWinControl; override;
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property LastSortColumn: integer read FLastColIndex;
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published
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{ Published declarations }
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property AllowColumnSort: boolean read FAllowColumnSort write FAllowColumnSort default true;
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property DataSource: TDataSource read GetDataSource write SetDataSource;
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property Descending: boolean read FDescending write FDescending;
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property EditorBorderStyle: TBorderStyle read GetEditorBorderStyle write SetEditorBorderStyle;
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property DefaultPositionAtEnd: boolean read FDefaultPositionAtEnd write FDefaultPositionAtEnd;
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property IndexFieldNames: string read FIndexFieldNames write SetIndexFieldNames;
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property OnColumnHeaderClick: TOnColumnHeaderClick read FOnColumnHeaderClick write FOnColumnHeaderClick;
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property OnRestorePosition: TOnRestorePosition read FOnRestorePosition write FOnRestorePosition;
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property OnUpdateSortOrder: TOnUpdateSortOrder read FOnUpdateSortOrder write FOnUpdateSortOrder;
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end;
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implementation
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tony |
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uses LCLType, Variants, EditBtn;
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{ TIBGridControlLink }
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constructor TIBGridControlLink.Create(AOwner: TIBDynamicGrid);
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begin
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inherited Create;
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FOwner := AOwner;
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end;
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procedure TIBGridControlLink.UpdateSQL(Sender: TObject);
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begin
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FOwner.UpdateSQL(self,TIBParserDataSet(Sender).Parser)
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end;
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tony |
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{ TDBLookupProperties }
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function TDBLookupProperties.GetAutoCompleteText: TComboBoxAutoCompleteText;
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begin
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Result := FAutoCompleteText;
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if AutoComplete then
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Result := Result + [cbactEnabled]
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end;
|
337 |
|
|
|
338 |
|
|
procedure TDBLookupProperties.SetAutoCompleteText(
|
339 |
|
|
AValue: TComboBoxAutoCompleteText);
|
340 |
|
|
begin
|
341 |
|
|
if AValue <> AutoCompleteText then
|
342 |
|
|
begin
|
343 |
|
|
FAutoComplete := cbactEnabled in AValue;
|
344 |
|
|
FAutoCompleteText := AValue - [cbactEnabled]
|
345 |
|
|
end;
|
346 |
|
|
end;
|
347 |
|
|
|
348 |
|
|
constructor TDBLookupProperties.Create(aOwner: TIBDynamicGridColumn);
|
349 |
|
|
begin
|
350 |
|
|
inherited Create;
|
351 |
|
|
FOwner := aOwner;
|
352 |
|
|
FAutoInsert := true;
|
353 |
|
|
FAutoComplete := true;
|
354 |
|
|
FAutoCompleteText := DefaultComboBoxAutoCompleteText;
|
355 |
|
|
FKeyPressInterval := 500;
|
356 |
|
|
FListSource := nil;
|
357 |
|
|
FStyle := csDropDown;
|
358 |
|
|
end;
|
359 |
|
|
|
360 |
|
|
{ TDBDynamicGrid }
|
361 |
|
|
|
362 |
|
|
procedure TDBDynamicGrid.DoGridResize;
|
363 |
|
|
var ColSum: integer;
|
364 |
|
|
ResizeColCount: integer;
|
365 |
|
|
I: integer;
|
366 |
|
|
adjustment: integer;
|
367 |
|
|
n: integer;
|
368 |
|
|
begin
|
369 |
|
|
if (csDesigning in ComponentState) or (Columns.Count = 0) then Exit;
|
370 |
|
|
|
371 |
|
|
FResizing := true;
|
372 |
|
|
try
|
373 |
|
|
ColSum := 0;
|
374 |
|
|
|
375 |
tony |
35 |
if (ColCount = 1) and TDBDynamicGridColumn(Columns[0]).AutoSizeColumn then
|
376 |
|
|
Columns[0].Width := ClientWidth
|
377 |
|
|
else
|
378 |
tony |
21 |
begin
|
379 |
tony |
35 |
for I := 0 to ColCount - 1 do
|
380 |
tony |
39 |
if (I < FixedCols) or Columns[I - FixedCols].Visible then
|
381 |
tony |
35 |
ColSum := ColSum + ColWidths[I];
|
382 |
tony |
21 |
|
383 |
tony |
35 |
if Colsum <> ClientWidth then
|
384 |
|
|
begin
|
385 |
|
|
ResizeColCount := 0;
|
386 |
|
|
for I := 0 to Columns.Count -1 do
|
387 |
tony |
39 |
if TDBDynamicGridColumn(Columns[I]).AutoSizeColumn and Columns[I].Visible then
|
388 |
tony |
35 |
begin
|
389 |
|
|
Inc(ResizeColCount);
|
390 |
|
|
Colsum := Colsum + TDBDynamicGridColumn(Columns[I]).DesignWidth - Columns[I].Width;
|
391 |
|
|
Columns[I].Width := TDBDynamicGridColumn(Columns[I]).DesignWidth;
|
392 |
|
|
end;
|
393 |
tony |
21 |
|
394 |
tony |
35 |
if (Colsum < ClientWidth) and (ResizeColCount > 0) then
|
395 |
|
|
begin
|
396 |
|
|
adjustment := (ClientWidth - ColSum) div ResizeColCount;
|
397 |
|
|
n := (ClientWidth - ColSum) mod ResizeColCount;
|
398 |
|
|
|
399 |
|
|
for I := 0 to Columns.Count -1 do
|
400 |
tony |
39 |
if TDBDynamicGridColumn(Columns[I]).AutoSizeColumn and Columns[I].Visible then
|
401 |
tony |
35 |
begin
|
402 |
|
|
if I = 0 then
|
403 |
|
|
Columns[I].Width := Columns[I].Width + adjustment + n
|
404 |
|
|
else
|
405 |
|
|
Columns[I].Width := Columns[I].Width + adjustment;
|
406 |
|
|
end;
|
407 |
|
|
end;
|
408 |
|
|
end;
|
409 |
tony |
21 |
end;
|
410 |
|
|
PositionTotals;
|
411 |
|
|
UpdateEditorPanelBounds;
|
412 |
|
|
finally
|
413 |
|
|
FResizing := false
|
414 |
|
|
end;
|
415 |
|
|
end;
|
416 |
|
|
|
417 |
|
|
procedure TDBDynamicGrid.DoEditorHide;
|
418 |
|
|
begin
|
419 |
|
|
inherited DoEditorHide;
|
420 |
tony |
27 |
if Editor = FEditorPanel then
|
421 |
|
|
begin
|
422 |
tony |
35 |
if FMouseDown then
|
423 |
|
|
Application.QueueAsyncCall(@PerformEditorHide,FExpandedRow)
|
424 |
|
|
else
|
425 |
|
|
PerformEditorHide(FExpandedRow);
|
426 |
tony |
27 |
FExpandedRow := -1;
|
427 |
|
|
end;
|
428 |
tony |
21 |
end;
|
429 |
|
|
|
430 |
|
|
procedure TDBDynamicGrid.DoEditorShow;
|
431 |
|
|
begin
|
432 |
tony |
35 |
if assigned(DataSource) and assigned(DataSource.DataSet) and
|
433 |
|
|
DataSource.DataSet.Active then
|
434 |
|
|
begin
|
435 |
|
|
if (DataSource.DataSet.RecordCount = 0) and (DataSource.DataSet.State <> dsInsert) then
|
436 |
|
|
DataSource.DataSet.Append
|
437 |
|
|
end;
|
438 |
tony |
21 |
if Editor = FEditorPanel then
|
439 |
|
|
begin
|
440 |
|
|
if ExpandEditorPanelBelowRow then
|
441 |
|
|
RowHeights[Row] := FEditorPanel.Height + DefaultRowHeight
|
442 |
|
|
else
|
443 |
|
|
RowHeights[Row] := FEditorPanel.Height;
|
444 |
|
|
FExpandedRow := Row;
|
445 |
|
|
inherited DoEditorShow;
|
446 |
|
|
UpdateEditorPanelBounds; {Position Editor Panel over expanded Row}
|
447 |
|
|
FEditorPanel.PerformTab(true); {Select First Control}
|
448 |
|
|
if assigned(FOnEditorPanelShow) then
|
449 |
|
|
OnEditorPanelShow(self);
|
450 |
tony |
35 |
if assigned(Editor) and Editor.Visible then
|
451 |
|
|
Editor.SetFocus;
|
452 |
tony |
21 |
end
|
453 |
|
|
else
|
454 |
|
|
inherited DoEditorShow;
|
455 |
|
|
end;
|
456 |
|
|
|
457 |
|
|
procedure TDBDynamicGrid.DrawCellText(aCol, aRow: Integer; aRect: TRect;
|
458 |
|
|
aState: TGridDrawState; aText: String);
|
459 |
|
|
var Style: TTextStyle;
|
460 |
|
|
OldStyle: TTextStyle;
|
461 |
|
|
begin
|
462 |
|
|
if ExpandEditorPanelBelowRow and assigned(FEditorPanel) and FEditorPanel.Visible and (aRow = FExpandedRow) then
|
463 |
|
|
begin
|
464 |
|
|
{Draw the text at the top of the cell}
|
465 |
|
|
Style := Canvas.TextStyle;
|
466 |
|
|
OldStyle := Style;
|
467 |
|
|
try
|
468 |
|
|
Style.Layout := tlTop;
|
469 |
|
|
Canvas.TextStyle := Style;
|
470 |
|
|
inherited DrawCellText(aCol, aRow, aRect, aState, aText);
|
471 |
|
|
finally
|
472 |
|
|
Canvas.TextStyle := OldStyle;
|
473 |
|
|
end;
|
474 |
|
|
|
475 |
|
|
end
|
476 |
|
|
else
|
477 |
|
|
inherited DrawCellText(aCol, aRow, aRect, aState, aText);
|
478 |
|
|
end;
|
479 |
|
|
|
480 |
|
|
function TDBDynamicGrid.EditingAllowed(ACol: Integer): Boolean;
|
481 |
|
|
begin
|
482 |
|
|
Result := ((FEditorPanel <> nil) and (FEditorPanel = Editor))
|
483 |
|
|
or inherited EditingAllowed(ACol);
|
484 |
|
|
end;
|
485 |
|
|
|
486 |
|
|
procedure TDBDynamicGrid.EditorHide;
|
487 |
|
|
begin
|
488 |
|
|
if assigned(FOnBeforeEditorHide) then
|
489 |
|
|
OnBeforeEditorHide(self);
|
490 |
|
|
inherited EditorHide;
|
491 |
|
|
end;
|
492 |
|
|
|
493 |
|
|
procedure TDBDynamicGrid.IndicatorClicked(Button: TMouseButton;
|
494 |
|
|
Shift: TShiftState);
|
495 |
|
|
begin
|
496 |
|
|
if assigned(FEditorPanel) then
|
497 |
|
|
begin
|
498 |
|
|
if FEditorPanel.Visible then
|
499 |
|
|
HideEditorPanel
|
500 |
|
|
else
|
501 |
|
|
ShowEditorPanel;
|
502 |
|
|
end;
|
503 |
|
|
end;
|
504 |
|
|
|
505 |
|
|
procedure TDBDynamicGrid.KeyDown(var Key: Word; Shift: TShiftState);
|
506 |
|
|
begin
|
507 |
|
|
if (Key = VK_F2) and (Shift = []) and assigned(FEditorPanel) then
|
508 |
|
|
begin
|
509 |
|
|
if not FEditorPanel.Visible then
|
510 |
|
|
ShowEditorPanel
|
511 |
|
|
end
|
512 |
|
|
else
|
513 |
|
|
inherited KeyDown(Key, Shift);
|
514 |
|
|
end;
|
515 |
|
|
|
516 |
tony |
31 |
function TDBDynamicGrid.ActiveControl: TControl;
|
517 |
|
|
var AParent: TWinControl;
|
518 |
|
|
begin
|
519 |
|
|
Result := nil;
|
520 |
|
|
AParent := Parent;
|
521 |
|
|
while (AParent <> nil) and not (AParent is TCustomForm) do
|
522 |
|
|
AParent := AParent.Parent;
|
523 |
|
|
if (AParent <> nil) and (AParent is TCustomForm)then
|
524 |
|
|
Result := TCustomForm(AParent).ActiveControl;
|
525 |
|
|
end;
|
526 |
|
|
|
527 |
tony |
21 |
procedure TDBDynamicGrid.DoShowEditorPanel(Data: PtrInt);
|
528 |
|
|
begin
|
529 |
|
|
if AppDestroying in Application.Flags then Exit;
|
530 |
|
|
ShowEditorPanel;
|
531 |
|
|
end;
|
532 |
|
|
|
533 |
|
|
procedure TDBDynamicGrid.PositionTotals;
|
534 |
|
|
var I: integer;
|
535 |
|
|
acol: TDBDynamicGridColumn;
|
536 |
|
|
LPos: integer;
|
537 |
|
|
begin
|
538 |
|
|
LPos := Left;
|
539 |
|
|
for I := 0 to FirstGridColumn - 1 do
|
540 |
|
|
LPos := LPos + ColWidths[I];
|
541 |
|
|
|
542 |
|
|
for I := 0 to Columns.Count - 1 do
|
543 |
|
|
begin
|
544 |
|
|
acol := TDBDynamicGridColumn(Columns[I]);
|
545 |
|
|
if assigned(acol.FColumnTotalsControl) then
|
546 |
|
|
begin
|
547 |
|
|
acol.FColumnTotalsControl.AutoSize := false;
|
548 |
|
|
acol.FColumnTotalsControl.Left := LPos;
|
549 |
|
|
acol.FColumnTotalsControl.Width := acol.Width
|
550 |
|
|
end;
|
551 |
|
|
LPos := LPos + acol.Width;
|
552 |
|
|
end;
|
553 |
|
|
end;
|
554 |
|
|
|
555 |
|
|
procedure TDBDynamicGrid.KeyDownHandler(Sender: TObject; var Key: Word;
|
556 |
|
|
Shift: TShiftState);
|
557 |
|
|
var Done: boolean;
|
558 |
tony |
31 |
AControl: TControl;
|
559 |
tony |
21 |
begin
|
560 |
|
|
if Visible and assigned(FEditorPanel) and FEditorPanel.Visible and FWeHaveFocus then
|
561 |
|
|
begin
|
562 |
|
|
Done := false;
|
563 |
tony |
31 |
AControl := ActiveControl;
|
564 |
|
|
if (AControl <> nil) and (AControl is TCustomComboBox)
|
565 |
|
|
and ((Key in [VK_UP,VK_DOWN]) or
|
566 |
|
|
(TCustomComboBox(AControl).DroppedDown and (Key = VK_RETURN)) or
|
567 |
|
|
((TCustomComboBox(AControl).Text <> '') and (Key = VK_ESCAPE))) then
|
568 |
|
|
Exit; {ignore these keys if we are in a combobox}
|
569 |
|
|
|
570 |
|
|
if (AControl <> nil) and (AControl is TCustomMemo)
|
571 |
tony |
49 |
and (Key in [VK_RETURN,VK_UP,VK_DOWN]) then Exit; {Ignore keys in a CustomMemo}
|
572 |
tony |
35 |
|
573 |
|
|
if (AControl <> nil) and (AControl is TCustomGrid)
|
574 |
tony |
49 |
and (Key in [VK_RETURN,VK_UP,VK_DOWN,VK_TAB]) then Exit; {Ignore keys in a Custom Grid}
|
575 |
tony |
35 |
|
576 |
tony |
49 |
if (AControl <> nil) and (AControl is TEBEdit) and (AControl.Owner is TDateEdit) then
|
577 |
|
|
begin
|
578 |
|
|
if (Key in [VK_LEFT,VK_RIGHT]) then Exit; {Ignore navigation keys}
|
579 |
|
|
if TDateEdit(AControl.Owner).DroppedDown and
|
580 |
|
|
(Key in [VK_RETURN,VK_UP,VK_DOWN,VK_ESCAPE]) then Exit; {Ignore TCalender navigation keys in a Data edit}
|
581 |
|
|
end;
|
582 |
tony |
45 |
|
583 |
tony |
21 |
if assigned(FOnKeyDownHander) then
|
584 |
|
|
OnKeyDownHander(Sender,Key,Shift,Done);
|
585 |
|
|
if Done then Exit;
|
586 |
|
|
|
587 |
|
|
{Allow Scrolling}
|
588 |
|
|
if Key in [VK_UP,VK_DOWN] then
|
589 |
|
|
KeyDown(Key,Shift)
|
590 |
|
|
else
|
591 |
|
|
{Cancel Editor}
|
592 |
|
|
if Key = VK_ESCAPE then
|
593 |
|
|
begin
|
594 |
|
|
if DataLink.DataSet.State in [dsInsert,dsEdit] then
|
595 |
|
|
DataLink.DataSet.Cancel;
|
596 |
|
|
KeyDown(Key,Shift);
|
597 |
|
|
end
|
598 |
|
|
{save}
|
599 |
|
|
else
|
600 |
|
|
if Key = VK_F2 then
|
601 |
|
|
HideEditorPanel;
|
602 |
|
|
end
|
603 |
|
|
end;
|
604 |
|
|
|
605 |
tony |
35 |
procedure TDBDynamicGrid.PerformEditorHide(Data: PtrInt);
|
606 |
|
|
var ExpandedRow: integer;
|
607 |
|
|
begin
|
608 |
|
|
if AppDestroying in Application.Flags then Exit;
|
609 |
|
|
ExpandedRow := integer(Data);
|
610 |
|
|
if (ExpandedRow >= 0) and (ExpandedRow < RowCount) then
|
611 |
|
|
RowHeights[ExpandedRow] := DefaultRowHeight;
|
612 |
|
|
if CanFocus then SetFocus;
|
613 |
|
|
DoOnResize;
|
614 |
|
|
ResetSizes;
|
615 |
|
|
DoOnChangeBounds;
|
616 |
|
|
if assigned(FOnEditorPanelHide) then
|
617 |
|
|
OnEditorPanelHide(self);
|
618 |
|
|
end;
|
619 |
|
|
|
620 |
tony |
21 |
procedure TDBDynamicGrid.SetEditorPanel(AValue: TWinControl);
|
621 |
|
|
begin
|
622 |
|
|
if FEditorPanel = AValue then Exit;
|
623 |
|
|
if FEditorPanel <> nil then
|
624 |
|
|
RemoveFreeNotification(FEditorPanel);
|
625 |
|
|
FEditorPanel := AValue;
|
626 |
tony |
39 |
if FEditorPanel <> nil then
|
627 |
|
|
FreeNotification(FEditorPanel);
|
628 |
tony |
21 |
end;
|
629 |
|
|
|
630 |
|
|
procedure TDBDynamicGrid.ChangeBounds(ALeft, ATop, AWidth, AHeight: integer;
|
631 |
|
|
KeepBase: boolean);
|
632 |
|
|
begin
|
633 |
|
|
if assigned(FEditorPanel) and FEditorPanel.Visible then
|
634 |
|
|
Application.QueueAsyncCall(@DoShowEditorPanel,0); {Restore afterwards if necessary}
|
635 |
|
|
inherited ChangeBounds(ALeft, ATop, AWidth, AHeight, KeepBase);
|
636 |
|
|
end;
|
637 |
|
|
|
638 |
|
|
procedure TDBDynamicGrid.DoEnter;
|
639 |
|
|
begin
|
640 |
|
|
inherited DoEnter;
|
641 |
|
|
FWeHaveFocus := true;
|
642 |
|
|
end;
|
643 |
|
|
|
644 |
|
|
procedure TDBDynamicGrid.DoExit;
|
645 |
|
|
begin
|
646 |
|
|
FWeHaveFocus := false;
|
647 |
|
|
inherited DoExit;
|
648 |
|
|
end;
|
649 |
|
|
|
650 |
|
|
procedure TDBDynamicGrid.Loaded;
|
651 |
|
|
begin
|
652 |
|
|
inherited Loaded;
|
653 |
|
|
if assigned(FEditorPanel) and not (csDesigning in ComponentState)then
|
654 |
|
|
FEditorPanel.Visible := false;
|
655 |
tony |
35 |
if Visible then
|
656 |
|
|
DoGridResize
|
657 |
tony |
21 |
end;
|
658 |
|
|
|
659 |
|
|
procedure TDBDynamicGrid.DoOnResize;
|
660 |
|
|
begin
|
661 |
|
|
inherited DoOnResize;
|
662 |
|
|
DoGridResize
|
663 |
|
|
end;
|
664 |
|
|
|
665 |
|
|
function TDBDynamicGrid.CreateColumns: TGridColumns;
|
666 |
|
|
begin
|
667 |
|
|
result := TDBGridColumns.Create(Self, TDBDynamicGridColumn);
|
668 |
|
|
end;
|
669 |
|
|
|
670 |
|
|
procedure TDBDynamicGrid.HeaderSized(IsColumn: Boolean; Index: Integer);
|
671 |
|
|
begin
|
672 |
|
|
inherited HeaderSized(IsColumn, Index);
|
673 |
|
|
PositionTotals
|
674 |
|
|
end;
|
675 |
|
|
|
676 |
|
|
procedure TDBDynamicGrid.MouseDown(Button: TMouseButton; Shift: TShiftState; X,
|
677 |
|
|
Y: Integer);
|
678 |
|
|
var Coord: TGridCoord;
|
679 |
|
|
begin
|
680 |
tony |
35 |
FMouseDown := true;
|
681 |
|
|
try
|
682 |
|
|
inherited MouseDown(Button, Shift, X, Y);
|
683 |
|
|
finally
|
684 |
|
|
FMouseDown := false;
|
685 |
|
|
end;
|
686 |
tony |
21 |
|
687 |
|
|
Coord := MouseCoord(X,Y);
|
688 |
|
|
if (Coord.X = 0) and (Coord.Y > 0) then
|
689 |
|
|
IndicatorClicked(Button,Shift);
|
690 |
|
|
end;
|
691 |
|
|
|
692 |
|
|
procedure TDBDynamicGrid.Notification(AComponent: TComponent;
|
693 |
|
|
Operation: TOperation);
|
694 |
tony |
39 |
var i: integer;
|
695 |
tony |
21 |
begin
|
696 |
|
|
inherited Notification(AComponent, Operation);
|
697 |
tony |
39 |
if (Operation = opRemove) and not (csDestroying in ComponentState) then
|
698 |
|
|
begin
|
699 |
|
|
if AComponent = FEditorPanel then
|
700 |
|
|
FEditorPanel := nil
|
701 |
|
|
else
|
702 |
|
|
if AComponent is TControl then
|
703 |
|
|
begin
|
704 |
|
|
for i := 0 to Columns.Count - 1 do
|
705 |
|
|
if TDBDynamicGridColumn(Columns[I]).ColumnTotalsControl = AComponent then
|
706 |
|
|
TDBDynamicGridColumn(Columns[I]).ColumnTotalsControl := nil;
|
707 |
|
|
end;
|
708 |
|
|
end
|
709 |
tony |
21 |
end;
|
710 |
|
|
|
711 |
|
|
procedure TDBDynamicGrid.TopLeftChanged;
|
712 |
|
|
begin
|
713 |
|
|
inherited TopLeftChanged;
|
714 |
|
|
UpdateEditorPanelBounds;
|
715 |
|
|
end;
|
716 |
|
|
|
717 |
|
|
procedure TDBDynamicGrid.UpdateActive;
|
718 |
|
|
begin
|
719 |
|
|
inherited UpdateActive;
|
720 |
|
|
|
721 |
tony |
41 |
if not (csLoading in ComponentState) and assigned(DataLink)
|
722 |
|
|
and assigned(DataLink.DataSet) and DataLink.DataSet.Active then
|
723 |
|
|
DoGridResize;
|
724 |
|
|
|
725 |
tony |
21 |
if not (csLoading in ComponentState) and assigned(DataLink) and
|
726 |
tony |
35 |
assigned(FEditorPanel) and not FEditorPanel.Visible and
|
727 |
tony |
21 |
assigned(DataLink.DataSet) and (DataLink.DataSet.State = dsInsert) then
|
728 |
|
|
Application.QueueAsyncCall(@DoShowEditorPanel,0);
|
729 |
|
|
end;
|
730 |
|
|
|
731 |
|
|
procedure TDBDynamicGrid.UpdateEditorPanelBounds;
|
732 |
|
|
var R: TRect;
|
733 |
|
|
Dummy: integer;
|
734 |
|
|
begin
|
735 |
|
|
if assigned(FEditorPanel) and FEditorPanel.Visible and
|
736 |
|
|
(FExpandedRow >= 0) and (FExpandedRow < RowCount) then
|
737 |
|
|
begin
|
738 |
|
|
// Upper and Lower bounds for this row
|
739 |
|
|
ColRowToOffSet(False, True, FExpandedRow, R.Top, R.Bottom);
|
740 |
|
|
//Left Bound for visible Columns
|
741 |
|
|
ColRowToOffSet(True,True,1,R.Left,Dummy);
|
742 |
|
|
//Right Bound for visible columns
|
743 |
|
|
ColRowToOffSet(True,True,ColCount - 1,Dummy,R.Right);
|
744 |
|
|
if ExpandEditorPanelBelowRow then
|
745 |
|
|
R.Top := R.Top + DefaultRowHeight;
|
746 |
|
|
FEditorPanel.BoundsRect := R;
|
747 |
|
|
end;
|
748 |
|
|
end;
|
749 |
|
|
|
750 |
|
|
procedure TDBDynamicGrid.UpdateShowing;
|
751 |
|
|
begin
|
752 |
|
|
inherited UpdateShowing;
|
753 |
|
|
DoGridResize
|
754 |
|
|
end;
|
755 |
|
|
|
756 |
|
|
procedure TDBDynamicGrid.HideEditorPanel;
|
757 |
|
|
begin
|
758 |
|
|
if Editor = FEditorPanel then
|
759 |
tony |
35 |
EditorMode := false;
|
760 |
tony |
21 |
end;
|
761 |
|
|
|
762 |
|
|
procedure TDBDynamicGrid.ShowEditorPanel;
|
763 |
tony |
41 |
var aEditor: TWinControl;
|
764 |
tony |
21 |
begin
|
765 |
tony |
27 |
if (csDesigning in ComponentState) or
|
766 |
|
|
(DataSource = nil) or (DataSource.DataSet = nil)
|
767 |
|
|
or ((DataSource.DataSet.RecordCount = 0) and (DataSource.DataSet.State <> dsInsert)) then
|
768 |
|
|
Exit;
|
769 |
tony |
41 |
aEditor := FEditorPanel;
|
770 |
|
|
if assigned(FOnSelectPanelEditor) then
|
771 |
|
|
OnSelectPanelEditor(self,aEditor);
|
772 |
|
|
if FEditorPanel <> aEditor then
|
773 |
|
|
SetEditorPanel(aEditor);
|
774 |
|
|
Editor := aEditor;
|
775 |
tony |
21 |
EditorMode := true;
|
776 |
|
|
end;
|
777 |
|
|
|
778 |
|
|
constructor TDBDynamicGrid.Create(TheComponent: TComponent);
|
779 |
|
|
begin
|
780 |
|
|
inherited Create(TheComponent);
|
781 |
|
|
ScrollBars := ssAutoVertical;
|
782 |
|
|
if not (csDesigning in ComponentState) then
|
783 |
|
|
Application.AddOnKeyDownBeforeHandler(@KeyDownHandler,false);
|
784 |
|
|
end;
|
785 |
|
|
|
786 |
|
|
destructor TDBDynamicGrid.Destroy;
|
787 |
|
|
begin
|
788 |
|
|
if not (csDesigning in ComponentState) then
|
789 |
|
|
Application.RemoveOnKeyDownBeforeHandler(@KeyDownHandler);
|
790 |
|
|
inherited Destroy;
|
791 |
|
|
end;
|
792 |
|
|
|
793 |
|
|
procedure TDBDynamicGrid.ResizeColumns;
|
794 |
|
|
begin
|
795 |
|
|
DoGridResize;
|
796 |
|
|
end;
|
797 |
|
|
|
798 |
|
|
{ TDBDynamicGridColumn }
|
799 |
|
|
|
800 |
|
|
procedure TDBDynamicGridColumn.SetWidth(AValue: integer);
|
801 |
|
|
begin
|
802 |
|
|
if Width = AValue then Exit;
|
803 |
|
|
inherited Width := AValue;
|
804 |
|
|
if not TDBDynamicGrid(Grid).FResizing then
|
805 |
|
|
FDesignWidth := Width
|
806 |
|
|
end;
|
807 |
|
|
|
808 |
|
|
function TDBDynamicGridColumn.GetWidth: integer;
|
809 |
|
|
begin
|
810 |
|
|
Result := inherited Width
|
811 |
|
|
end;
|
812 |
|
|
|
813 |
tony |
39 |
type
|
814 |
|
|
THackedGrid = class(TIBDynamicGrid)
|
815 |
|
|
public
|
816 |
|
|
property FixedCols;
|
817 |
|
|
end;
|
818 |
|
|
|
819 |
tony |
21 |
{ TDBLookupCellEditor }
|
820 |
|
|
|
821 |
tony |
39 |
function TDBLookupCellEditor.EditingKeyField: boolean;
|
822 |
|
|
begin
|
823 |
|
|
with TIBDynamicGridColumn(TDBGrid(FGrid).Columns[FCol - THackedGrid(FGrid).FixedCols]) do
|
824 |
|
|
Result := CompareText(FieldName, DBLookupProperties.DataFieldName) = 0;
|
825 |
|
|
end;
|
826 |
|
|
|
827 |
tony |
21 |
procedure TDBLookupCellEditor.WndProc(var TheMessage: TLMessage);
|
828 |
|
|
begin
|
829 |
|
|
if TheMessage.msg=LM_KILLFOCUS then begin
|
830 |
|
|
if HWND(TheMessage.WParam) = HWND(Handle) then begin
|
831 |
|
|
// lost the focus but it returns to ourselves
|
832 |
|
|
// eat the message.
|
833 |
|
|
TheMessage.Result := 0;
|
834 |
|
|
exit;
|
835 |
|
|
end;
|
836 |
|
|
end;
|
837 |
|
|
inherited WndProc(TheMessage);
|
838 |
|
|
end;
|
839 |
|
|
|
840 |
|
|
procedure TDBLookupCellEditor.CloseUp;
|
841 |
|
|
begin
|
842 |
|
|
UpdateData(nil); {Force Record Update}
|
843 |
|
|
if FGrid<>nil then
|
844 |
tony |
27 |
Begin
|
845 |
tony |
39 |
if EditingKeyField then
|
846 |
|
|
begin
|
847 |
|
|
if not VarIsNull(KeyValue) then
|
848 |
|
|
(FGrid as TIBDynamicGrid).EditorTextChanged(FCol, FRow, KeyValue)
|
849 |
|
|
end
|
850 |
|
|
else
|
851 |
|
|
(FGrid as TIBDynamicGrid).EditorTextChanged(FCol, FRow, Trim(Text));
|
852 |
tony |
27 |
(FGrid as TIBDynamicGrid).UpdateData;
|
853 |
|
|
end;
|
854 |
tony |
21 |
inherited CloseUp;
|
855 |
|
|
end;
|
856 |
|
|
|
857 |
|
|
procedure TDBLookupCellEditor.KeyDown(var Key: Word; Shift: TShiftState);
|
858 |
|
|
begin
|
859 |
|
|
if (Key = VK_TAB) and assigned(FGrid) then
|
860 |
|
|
TIBDynamicGrid(FGrid).KeyDown(Key,Shift)
|
861 |
|
|
else
|
862 |
|
|
inherited KeyDown(Key, Shift);
|
863 |
|
|
end;
|
864 |
|
|
|
865 |
tony |
27 |
procedure TDBLookupCellEditor.Loaded;
|
866 |
|
|
begin
|
867 |
|
|
inherited Loaded;
|
868 |
|
|
Text := '';
|
869 |
|
|
end;
|
870 |
|
|
|
871 |
tony |
21 |
procedure TDBLookupCellEditor.msg_GetValue(var Msg: TGridMessage);
|
872 |
|
|
begin
|
873 |
|
|
CheckAndInsert;
|
874 |
|
|
Msg.Col := FCol;
|
875 |
|
|
Msg.Row := FRow;
|
876 |
tony |
39 |
if EditingKeyField then
|
877 |
|
|
begin
|
878 |
|
|
if not VarIsNull(KeyValue) then
|
879 |
|
|
Msg.Value:= KeyValue
|
880 |
|
|
else
|
881 |
|
|
Msg.Value:= ''
|
882 |
|
|
end
|
883 |
|
|
else
|
884 |
|
|
Msg.Value:= Trim(Text);
|
885 |
tony |
21 |
end;
|
886 |
|
|
|
887 |
|
|
procedure TDBLookupCellEditor.msg_SetGrid(var Msg: TGridMessage);
|
888 |
|
|
begin
|
889 |
|
|
FGrid:=Msg.Grid;
|
890 |
|
|
Msg.Options:=EO_AUTOSIZE or EO_SELECTALL or EO_HOOKKEYPRESS or EO_HOOKKEYUP;
|
891 |
|
|
end;
|
892 |
|
|
|
893 |
|
|
procedure TDBLookupCellEditor.msg_SetValue(var Msg: TGridMessage);
|
894 |
|
|
begin
|
895 |
|
|
FGrid := Msg.Grid;
|
896 |
|
|
FCol := Msg.Col;
|
897 |
|
|
FRow := Msg.Row;
|
898 |
|
|
FEditText := Msg.Value;
|
899 |
|
|
TIBDynamicGrid(FGrid).SetupEditor(self,FCol);
|
900 |
|
|
end;
|
901 |
|
|
|
902 |
|
|
procedure TDBLookupCellEditor.msg_SetPos(var Msg: TGridMessage);
|
903 |
|
|
begin
|
904 |
|
|
FCol := Msg.Col;
|
905 |
|
|
FRow := Msg.Row;
|
906 |
|
|
end;
|
907 |
|
|
|
908 |
|
|
procedure TDBLookupCellEditor.msg_GetGrid(var Msg: TGridMessage);
|
909 |
|
|
begin
|
910 |
|
|
Msg.Grid := FGrid;
|
911 |
|
|
Msg.Options:= EO_IMPLEMENTED;
|
912 |
|
|
end;
|
913 |
|
|
|
914 |
|
|
procedure TDBLookupCellEditor.EditingDone;
|
915 |
|
|
begin
|
916 |
|
|
inherited EditingDone;
|
917 |
|
|
if FGrid<>nil then
|
918 |
|
|
FGrid.EditingDone;
|
919 |
|
|
end;
|
920 |
|
|
|
921 |
|
|
{ TIBDynamicGridColumn }
|
922 |
|
|
|
923 |
|
|
procedure TIBDynamicGridColumn.DoSetupEditor(Data: PtrInt);
|
924 |
|
|
var Editor: TDBlookupCellEditor;
|
925 |
|
|
begin
|
926 |
|
|
if AppDestroying in Application.Flags then Exit;
|
927 |
|
|
|
928 |
|
|
Editor := TDBlookupCellEditor(Data);
|
929 |
|
|
Editor.DataSource := nil;
|
930 |
|
|
Editor.ListSource := nil; {Allows change without causing an error}
|
931 |
|
|
Editor.KeyValue := NULL;
|
932 |
|
|
|
933 |
|
|
with DBLookupProperties do
|
934 |
|
|
begin
|
935 |
|
|
{Setup Properties}
|
936 |
|
|
Editor.AutoInsert := AutoInsert;
|
937 |
|
|
Editor.AutoComplete := AutoComplete;
|
938 |
|
|
Editor.AutoCompleteText := AutoCompleteText;
|
939 |
|
|
Editor.KeyPressInterval := KeyPressInterval;
|
940 |
|
|
Editor.Style := Style;
|
941 |
|
|
Editor.ItemHeight := ItemHeight;
|
942 |
|
|
Editor.ItemWidth := ItemWidth;
|
943 |
|
|
Editor.RelationName := RelationName;
|
944 |
|
|
Editor.OnAutoInsert := OnAutoInsert;
|
945 |
|
|
Editor.OnCanAutoInsert := OnCanAutoInsert;
|
946 |
|
|
Editor.OnDrawItem := OnDrawItem;
|
947 |
tony |
31 |
Editor.OnCloseUp := OnCloseUp;
|
948 |
tony |
21 |
|
949 |
|
|
{Setup Data Links}
|
950 |
|
|
if KeyField <> '' then
|
951 |
|
|
Editor.KeyField := KeyField
|
952 |
|
|
else
|
953 |
|
|
Editor.KeyField := ListField;
|
954 |
|
|
Editor.ListField := ListField;
|
955 |
|
|
Editor.DataField := DataFieldName;
|
956 |
|
|
end;
|
957 |
|
|
Application.QueueAsyncCall(@DoSetDataSources,PtrInt(Editor));
|
958 |
|
|
end;
|
959 |
|
|
|
960 |
|
|
procedure TIBDynamicGridColumn.DoSetDataSources(Data: PtrInt);
|
961 |
|
|
var Editor: TDBlookupCellEditor;
|
962 |
|
|
begin
|
963 |
|
|
if AppDestroying in Application.Flags then Exit;
|
964 |
|
|
|
965 |
|
|
Editor := TDBlookupCellEditor(Data);
|
966 |
|
|
with DBLookupProperties do
|
967 |
|
|
begin
|
968 |
|
|
Editor.ListSource := ListSource;
|
969 |
|
|
if DataFieldName <> '' then
|
970 |
|
|
Editor.DataSource := TDBGrid(Grid).DataSource;
|
971 |
|
|
end;
|
972 |
tony |
39 |
if Editor.EditingKeyField then
|
973 |
|
|
begin
|
974 |
|
|
if not Field.IsNull then
|
975 |
|
|
Editor.KeyValue := Editor.FEditText
|
976 |
|
|
end
|
977 |
|
|
else
|
978 |
|
|
Editor.Text := Editor.FEditText;
|
979 |
tony |
31 |
Editor.SelStart := Length(Editor.Text);
|
980 |
tony |
21 |
end;
|
981 |
|
|
|
982 |
|
|
procedure TIBDynamicGridColumn.SetInitialSortColumn(AValue: boolean);
|
983 |
|
|
begin
|
984 |
|
|
if FInitialSortColumn = AValue then Exit;
|
985 |
|
|
FInitialSortColumn := AValue;
|
986 |
|
|
(Grid as TIBDynamicGrid).UpdateSortColumn(self)
|
987 |
|
|
end;
|
988 |
|
|
|
989 |
|
|
procedure TIBDynamicGridColumn.SetupEditor(Editor: TDBlookupCellEditor);
|
990 |
|
|
begin
|
991 |
|
|
Application.QueueAsyncCall(@DoSetupEditor,PtrInt(Editor));
|
992 |
|
|
end;
|
993 |
|
|
|
994 |
|
|
constructor TIBDynamicGridColumn.Create(ACollection: TCollection);
|
995 |
|
|
begin
|
996 |
|
|
inherited Create(ACollection);
|
997 |
|
|
FDBLookupProperties := TDBLookupProperties.Create(self);
|
998 |
|
|
end;
|
999 |
|
|
|
1000 |
|
|
destructor TIBDynamicGridColumn.Destroy;
|
1001 |
|
|
begin
|
1002 |
|
|
if assigned(FDBLookupProperties) then FDBLookupProperties.Free;
|
1003 |
tony |
80 |
Application.RemoveAsyncCalls(self);
|
1004 |
tony |
21 |
inherited Destroy;
|
1005 |
|
|
end;
|
1006 |
|
|
|
1007 |
|
|
|
1008 |
|
|
{ TIBDynamicGrid }
|
1009 |
|
|
|
1010 |
|
|
procedure TIBDynamicGrid.ColumnHeaderClick(Index: integer);
|
1011 |
|
|
begin
|
1012 |
|
|
FColHeaderClick := true;
|
1013 |
|
|
try
|
1014 |
|
|
if Index = FLastColIndex then
|
1015 |
|
|
FDescending := not FDescending;
|
1016 |
|
|
|
1017 |
|
|
if assigned(FOnColumnHeaderClick) then
|
1018 |
|
|
OnColumnHeaderClick(self,Index);
|
1019 |
|
|
|
1020 |
|
|
FLastColIndex := Index;
|
1021 |
tony |
37 |
FFieldPosition := 0;
|
1022 |
|
|
if assigned(DataSource) and assigned(DataSource.DataSet) and DataSource.DataSet.Active
|
1023 |
|
|
and (DataSource.DataSet is TIBParserDataSet) then
|
1024 |
tony |
21 |
begin
|
1025 |
tony |
37 |
if FLastColIndex < Columns.Count then
|
1026 |
|
|
{try and cache field position while dataset still open}
|
1027 |
|
|
FFieldPosition := TIBParserDataSet(DataSource.DataSet).Parser.GetFieldPosition(Columns[FLastColIndex].FieldName);
|
1028 |
tony |
21 |
DataSource.DataSet.Active := false;
|
1029 |
|
|
Application.QueueAsyncCall(@DoReopen,0)
|
1030 |
|
|
end;
|
1031 |
|
|
finally
|
1032 |
|
|
FColHeaderClick := false
|
1033 |
|
|
end;
|
1034 |
|
|
end;
|
1035 |
|
|
|
1036 |
|
|
function TIBDynamicGrid.GetDataSource: TDataSource;
|
1037 |
|
|
begin
|
1038 |
|
|
if assigned(DataLink) then
|
1039 |
|
|
Result := inherited DataSource
|
1040 |
|
|
else
|
1041 |
|
|
Result := nil;
|
1042 |
|
|
end;
|
1043 |
|
|
|
1044 |
|
|
function TIBDynamicGrid.GetEditorBorderStyle: TBorderStyle;
|
1045 |
|
|
begin
|
1046 |
|
|
if Editor = FDBLookupCellEditor then
|
1047 |
|
|
Result := FDBLookupCellEditor.BorderStyle
|
1048 |
|
|
else
|
1049 |
|
|
Result := inherited EditorBorderStyle
|
1050 |
|
|
end;
|
1051 |
|
|
|
1052 |
|
|
procedure TIBDynamicGrid.SetDataSource(AValue: TDataSource);
|
1053 |
|
|
begin
|
1054 |
|
|
inherited DataSource := AValue;
|
1055 |
tony |
27 |
IBControlLinkChanged;
|
1056 |
tony |
21 |
end;
|
1057 |
|
|
|
1058 |
|
|
procedure TIBDynamicGrid.SetEditorBorderStyle(AValue: TBorderStyle);
|
1059 |
|
|
begin
|
1060 |
|
|
inherited EditorBorderStyle := AValue;
|
1061 |
|
|
if FDBLookupCellEditor.BorderStyle <> AValue then
|
1062 |
|
|
begin
|
1063 |
|
|
FDBLookupCellEditor.BorderStyle := AValue;
|
1064 |
|
|
if (Editor = FDBLookupCellEditor) and EditorMode then
|
1065 |
|
|
EditorWidthChanged(Col,FDBLookupCellEditor.Width);
|
1066 |
|
|
end;
|
1067 |
|
|
end;
|
1068 |
|
|
|
1069 |
|
|
procedure TIBDynamicGrid.ProcessColumns;
|
1070 |
|
|
var i: integer;
|
1071 |
|
|
begin
|
1072 |
|
|
for i := 0 to Columns.Count - 1 do
|
1073 |
|
|
begin
|
1074 |
|
|
if TIBDynamicGridColumn(columns[i]).InitialSortColumn then
|
1075 |
tony |
37 |
begin
|
1076 |
|
|
FFieldPosition := 0;
|
1077 |
tony |
21 |
FLastColIndex := i
|
1078 |
tony |
37 |
end
|
1079 |
tony |
21 |
end
|
1080 |
|
|
end;
|
1081 |
|
|
|
1082 |
|
|
procedure TIBDynamicGrid.SetIndexFieldNames(AValue: string);
|
1083 |
|
|
var idx: integer;
|
1084 |
|
|
begin
|
1085 |
|
|
if FIndexFieldNames = AValue then Exit;
|
1086 |
|
|
FIndexFieldNames := AValue;
|
1087 |
|
|
idx := 1;
|
1088 |
|
|
FIndexFieldsList.Clear;
|
1089 |
|
|
while idx <= Length(AValue) do
|
1090 |
|
|
FIndexFieldsList.Add(ExtractFieldName(AValue,idx));
|
1091 |
|
|
end;
|
1092 |
|
|
|
1093 |
|
|
procedure TIBDynamicGrid.UpdateSQL(Sender: TObject; Parser: TSelectSQLParser);
|
1094 |
|
|
var OrderBy: string;
|
1095 |
|
|
begin
|
1096 |
tony |
27 |
if assigned(DataSource) and assigned(DataSource.DataSet)
|
1097 |
tony |
21 |
and (DataSource.DataSet is TIBCustomDataSet) then
|
1098 |
|
|
begin
|
1099 |
tony |
37 |
if (FFieldPosition = 0) and (FLastColIndex >= 0) and (FLastColIndex < Columns.Count) then
|
1100 |
|
|
{Not cached - let's hope we can find it before the dataset is opened.
|
1101 |
|
|
Won't work if dynamic columns}
|
1102 |
|
|
FFieldPosition := Parser.GetFieldPosition(Columns[FLastColIndex].FieldName);
|
1103 |
|
|
if FFieldPosition > 0 then
|
1104 |
tony |
35 |
begin
|
1105 |
|
|
if Descending then
|
1106 |
tony |
37 |
Parser.OrderByClause := IntToStr(FFieldPosition) + ' desc'
|
1107 |
tony |
35 |
else
|
1108 |
tony |
37 |
Parser.OrderByClause := IntToStr(FFieldPosition) + ' asc';
|
1109 |
tony |
35 |
end;
|
1110 |
tony |
21 |
|
1111 |
|
|
if assigned(FOnUpdateSortOrder) then
|
1112 |
|
|
begin
|
1113 |
|
|
OrderBy := Parser.OrderByClause;
|
1114 |
|
|
OnUpdateSortOrder(self,FLastColIndex,OrderBy);
|
1115 |
|
|
Parser.OrderByClause := OrderBy
|
1116 |
|
|
end
|
1117 |
|
|
end;
|
1118 |
|
|
end;
|
1119 |
|
|
|
1120 |
|
|
procedure TIBDynamicGrid.UpdateSortColumn(Sender: TObject);
|
1121 |
|
|
var i: integer;
|
1122 |
|
|
begin
|
1123 |
|
|
if Sender is TIBDynamicGridColumn then
|
1124 |
|
|
begin
|
1125 |
|
|
for i := 0 to Columns.Count -1 do
|
1126 |
|
|
if TObject(Columns[i]) <> Sender then
|
1127 |
|
|
TIBDynamicGridColumn(Columns[i]).InitialSortColumn := false
|
1128 |
|
|
end
|
1129 |
|
|
|
1130 |
|
|
end;
|
1131 |
|
|
|
1132 |
tony |
27 |
procedure TIBDynamicGrid.RestorePosition;
|
1133 |
tony |
21 |
begin
|
1134 |
|
|
if assigned(DataSource) and assigned(DataSource.DataSet) and DataSource.DataSet.Active then
|
1135 |
|
|
begin
|
1136 |
tony |
27 |
if assigned(FOnRestorePosition) then
|
1137 |
|
|
OnRestorePosition(self,@FBookmark);
|
1138 |
tony |
21 |
if (Length(FBookmark) > 0) and
|
1139 |
|
|
DataSource.DataSet.Locate(FIndexFieldNames,FBookmark,[]) then Exit;
|
1140 |
|
|
|
1141 |
|
|
if FDefaultPositionAtEnd then
|
1142 |
|
|
DataSource.DataSet.Last
|
1143 |
|
|
end;
|
1144 |
|
|
end;
|
1145 |
|
|
|
1146 |
tony |
27 |
procedure TIBDynamicGrid.SavePosition;
|
1147 |
|
|
var i: integer;
|
1148 |
|
|
F: TField;
|
1149 |
|
|
begin
|
1150 |
|
|
if FIndexFieldsList = nil then Exit;
|
1151 |
|
|
|
1152 |
|
|
SetLength(FBookmark,FIndexFieldsList.Count);
|
1153 |
|
|
for i := 0 to FIndexFieldsList.Count - 1 do
|
1154 |
|
|
begin
|
1155 |
|
|
F := DataSource.DataSet.FindField(FIndexFieldsList[i]);
|
1156 |
|
|
if assigned(F) then
|
1157 |
|
|
FBookmark[i] := F.AsVariant;
|
1158 |
|
|
end;
|
1159 |
|
|
end;
|
1160 |
|
|
|
1161 |
tony |
21 |
procedure TIBDynamicGrid.DoReOpen(Data: PtrInt);
|
1162 |
|
|
begin
|
1163 |
|
|
DataSource.DataSet.Active := true;
|
1164 |
|
|
end;
|
1165 |
|
|
|
1166 |
tony |
27 |
procedure TIBDynamicGrid.IBControlLinkChanged;
|
1167 |
|
|
begin
|
1168 |
|
|
if (DataSource <> nil) and (DataSource.DataSet <> nil) and (DataSource.DataSet is TIBParserDataSet) then
|
1169 |
|
|
FIBControlLink.IBDataSet := TIBCustomDataSet(DataSource.DataSet)
|
1170 |
|
|
else
|
1171 |
|
|
FIBControlLink.IBDataSet := nil;
|
1172 |
|
|
end;
|
1173 |
|
|
|
1174 |
tony |
21 |
procedure TIBDynamicGrid.SetupEditor(aEditor: TDBLookupCellEditor; aCol: integer
|
1175 |
|
|
);
|
1176 |
|
|
var C: TIBDynamicGridColumn;
|
1177 |
|
|
begin
|
1178 |
|
|
C := ColumnFromGridColumn(aCol) as TIBDynamicGridColumn;
|
1179 |
tony |
27 |
if (c <> nil) then
|
1180 |
|
|
C.SetupEditor(aEditor);
|
1181 |
tony |
21 |
end;
|
1182 |
|
|
|
1183 |
|
|
procedure TIBDynamicGrid.DoEditorHide;
|
1184 |
|
|
var i: integer;
|
1185 |
|
|
begin
|
1186 |
|
|
inherited DoEditorHide;
|
1187 |
|
|
if assigned(EditorPanel) then
|
1188 |
|
|
for i := 0 to EditorPanel.ControlCount -1 do
|
1189 |
|
|
if EditorPanel.Controls[i] is TIBLookupComboEditBox then
|
1190 |
|
|
EditorPanel.Controls[i].Perform(CM_VISIBLECHANGED, WParam(ord(false)), 0);
|
1191 |
|
|
end;
|
1192 |
|
|
|
1193 |
|
|
procedure TIBDynamicGrid.Loaded;
|
1194 |
|
|
begin
|
1195 |
|
|
inherited Loaded;
|
1196 |
tony |
29 |
IBControlLinkChanged;
|
1197 |
tony |
21 |
ProcessColumns;
|
1198 |
|
|
end;
|
1199 |
|
|
|
1200 |
|
|
function TIBDynamicGrid.CreateColumns: TGridColumns;
|
1201 |
|
|
begin
|
1202 |
|
|
result := TDBGridColumns.Create(Self, TIBDynamicGridColumn);
|
1203 |
|
|
end;
|
1204 |
|
|
|
1205 |
|
|
procedure TIBDynamicGrid.MouseDown(Button: TMouseButton; Shift: TShiftState; X,
|
1206 |
|
|
Y: Integer);
|
1207 |
|
|
var Coord: TGridCoord;
|
1208 |
|
|
obe: boolean;
|
1209 |
|
|
function PtInRect(const Rect : TRect;const p : TPoint) : Boolean;
|
1210 |
|
|
|
1211 |
|
|
begin
|
1212 |
|
|
PtInRect:=(p.y>=Rect.Top) and
|
1213 |
|
|
(p.y<Rect.Bottom) and
|
1214 |
|
|
(p.x>=Rect.Left) and
|
1215 |
|
|
(p.x<Rect.Right);
|
1216 |
|
|
end;
|
1217 |
|
|
begin
|
1218 |
|
|
if (Editor is TDBLookupCellEditor) and Editor.Visible
|
1219 |
|
|
and not PtInRect(Editor.BoundsRect,Point(X,Y)) then
|
1220 |
|
|
Editor.Perform(CM_EXIT,0,0); {Do insert new value if necessary}
|
1221 |
|
|
inherited MouseDown(Button, Shift, X, Y);
|
1222 |
|
|
obe := AllowOutboundEvents;
|
1223 |
|
|
AllowOutboundEvents := false;
|
1224 |
|
|
try
|
1225 |
|
|
Coord := MouseCoord(X,Y);
|
1226 |
tony |
27 |
if AllowColumnSort and (Coord.X <> -1) and (FixedRows > 0) and
|
1227 |
tony |
21 |
(Coord.Y = 0) and (MouseCoord(X+5,Y).X = Coord.X) {not on boundary}
|
1228 |
|
|
and (MouseCoord(X-5,Y).X = Coord.X) then
|
1229 |
|
|
ColumnHeaderClick(Coord.X-1);
|
1230 |
|
|
finally
|
1231 |
|
|
AllowOutboundEvents := obe
|
1232 |
|
|
end;
|
1233 |
|
|
end;
|
1234 |
|
|
|
1235 |
tony |
27 |
procedure TIBDynamicGrid.MoveSelection;
|
1236 |
|
|
begin
|
1237 |
|
|
inherited MoveSelection;
|
1238 |
|
|
SavePosition;
|
1239 |
|
|
end;
|
1240 |
|
|
|
1241 |
tony |
21 |
procedure TIBDynamicGrid.LinkActive(Value: Boolean);
|
1242 |
|
|
begin
|
1243 |
tony |
27 |
IBControlLinkChanged;
|
1244 |
tony |
21 |
inherited LinkActive(Value);
|
1245 |
|
|
if (FActive <> Value) and Value then
|
1246 |
tony |
27 |
RestorePosition;
|
1247 |
tony |
21 |
FActive := Value
|
1248 |
|
|
end;
|
1249 |
|
|
|
1250 |
|
|
procedure TIBDynamicGrid.Notification(AComponent: TComponent;
|
1251 |
|
|
Operation: TOperation);
|
1252 |
tony |
39 |
var i: integer;
|
1253 |
tony |
21 |
begin
|
1254 |
|
|
inherited Notification(AComponent, Operation);
|
1255 |
tony |
39 |
if (Operation = opRemove) then
|
1256 |
|
|
begin
|
1257 |
|
|
if (FIBControlLink <> nil) and (AComponent = DataSource) then
|
1258 |
|
|
FIBControlLink.IBDataSet := nil
|
1259 |
|
|
else
|
1260 |
|
|
if AComponent is TDataSource then
|
1261 |
|
|
begin
|
1262 |
|
|
for i := 0 to Columns.Count - 1 do
|
1263 |
|
|
if TIBDynamicGridColumn(Columns[I]).DBLookupProperties.ListSource = AComponent then
|
1264 |
|
|
TIBDynamicGridColumn(Columns[I]).DBLookupProperties.ListSource := nil;
|
1265 |
|
|
end
|
1266 |
|
|
end
|
1267 |
tony |
21 |
end;
|
1268 |
|
|
|
1269 |
|
|
procedure TIBDynamicGrid.UpdateActive;
|
1270 |
|
|
begin
|
1271 |
|
|
inherited UpdateActive;
|
1272 |
tony |
27 |
if assigned(DataLink) and assigned(DataLink.DataSet) and
|
1273 |
|
|
DataLink.DataSet.Active and (DataLink.DataSet.State = dsInsert) then
|
1274 |
|
|
SavePosition;
|
1275 |
tony |
21 |
end;
|
1276 |
|
|
|
1277 |
|
|
constructor TIBDynamicGrid.Create(TheComponent: TComponent);
|
1278 |
|
|
begin
|
1279 |
|
|
inherited Create(TheComponent);
|
1280 |
|
|
FAllowColumnSort := true;
|
1281 |
tony |
27 |
FIBControlLink := TIBGridControlLink.Create(self);
|
1282 |
tony |
21 |
FIndexFieldsList := TStringList.Create;
|
1283 |
|
|
FIndexFieldsList.Delimiter := ';';
|
1284 |
|
|
FIndexFieldsList.StrictDelimiter := true;
|
1285 |
|
|
FDBLookupCellEditor := TDBLookupCellEditor.Create(nil);
|
1286 |
|
|
FDBLookupCellEditor.Name := 'DBLookupCellEditor';
|
1287 |
|
|
FDBLookupCellEditor.Visible := False;
|
1288 |
|
|
FDBLookupCellEditor.AutoSize := false;
|
1289 |
|
|
end;
|
1290 |
|
|
|
1291 |
|
|
destructor TIBDynamicGrid.Destroy;
|
1292 |
|
|
begin
|
1293 |
tony |
27 |
if assigned(FIBControlLink) then FIBControlLink.Free;
|
1294 |
tony |
21 |
if assigned(FIndexFieldsList) then FIndexFieldsList.Free;
|
1295 |
|
|
if assigned(FDBLookupCellEditor) then FDBLookupCellEditor.Free;
|
1296 |
tony |
80 |
Application.RemoveAsyncCalls(self);
|
1297 |
tony |
21 |
inherited Destroy;
|
1298 |
|
|
end;
|
1299 |
|
|
|
1300 |
|
|
function TIBDynamicGrid.EditorByStyle(Style: TColumnButtonStyle): TWinControl;
|
1301 |
|
|
var C: TIBDynamicGridColumn;
|
1302 |
|
|
bs: TColumnButtonStyle;
|
1303 |
|
|
begin
|
1304 |
|
|
C := ColumnFromGridColumn(Col) as TIBDynamicGridColumn;
|
1305 |
|
|
if C <> nil then
|
1306 |
|
|
begin
|
1307 |
|
|
bs := C.ButtonStyle;
|
1308 |
|
|
if (bs in [cbsAuto,cbsPickList]) and assigned(C.DBLookupProperties.ListSource) then
|
1309 |
|
|
begin
|
1310 |
|
|
Result := FDBLookupCellEditor;
|
1311 |
|
|
Exit;
|
1312 |
|
|
end;
|
1313 |
|
|
end;
|
1314 |
|
|
Result := inherited EditorByStyle(Style);
|
1315 |
|
|
end;
|
1316 |
|
|
|
1317 |
|
|
end.
|