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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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* The Original Code is (C) 2015 Tony Whyman, MWA Software
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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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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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IBSQLParser, Grids, IBLookupComboEditBox, LMessages, StdCtrls, ExtCtrls,
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IBCustomDataSet;
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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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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 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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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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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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FResizing: boolean;
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FWeHaveFocus: boolean;
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FHidingEditorPanel: boolean;
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FAllowHide: boolean;
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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 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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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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{ 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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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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uses Math, IBQuery, LCLType;
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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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{ 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;
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procedure TDBLookupProperties.SetAutoCompleteText(
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AValue: TComboBoxAutoCompleteText);
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begin
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if AValue <> AutoCompleteText then
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begin
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FAutoComplete := cbactEnabled in AValue;
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FAutoCompleteText := AValue - [cbactEnabled]
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end;
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end;
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constructor TDBLookupProperties.Create(aOwner: TIBDynamicGridColumn);
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begin
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inherited Create;
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FOwner := aOwner;
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FAutoInsert := true;
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FAutoComplete := true;
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FAutoCompleteText := DefaultComboBoxAutoCompleteText;
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FKeyPressInterval := 500;
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FListSource := nil;
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FStyle := csDropDown;
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end;
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{ TDBDynamicGrid }
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procedure TDBDynamicGrid.DoGridResize;
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var ColSum: integer;
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ResizeColCount: integer;
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I: integer;
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adjustment: integer;
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n: integer;
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begin
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if (csDesigning in ComponentState) or (Columns.Count = 0) then Exit;
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FResizing := true;
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try
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ColSum := 0;
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for I := 0 to ColCount - 1 do
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ColSum := ColSum + ColWidths[I];
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if Colsum <> ClientWidth then
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begin
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ResizeColCount := 0;
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for I := 0 to Columns.Count -1 do
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if TDBDynamicGridColumn(Columns[I]).AutoSizeColumn then
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begin
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Inc(ResizeColCount);
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Colsum := Colsum + TDBDynamicGridColumn(Columns[I]).DesignWidth - Columns[I].Width;
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Columns[I].Width := TDBDynamicGridColumn(Columns[I]).DesignWidth;
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end;
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if (Colsum < ClientWidth) and (ResizeColCount > 0) then
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begin
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adjustment := (ClientWidth - ColSum) div ResizeColCount;
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n := (ClientWidth - ColSum) mod ResizeColCount;
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for I := 0 to Columns.Count -1 do
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if TDBDynamicGridColumn(Columns[I]).AutoSizeColumn then
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begin
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if I = 0 then
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Columns[I].Width := Columns[I].Width + adjustment + n
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else
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Columns[I].Width := Columns[I].Width + adjustment;
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end;
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end;
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end;
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PositionTotals;
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UpdateEditorPanelBounds;
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finally
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FResizing := false
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end;
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end;
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procedure TDBDynamicGrid.DoEditorHide;
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begin
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inherited DoEditorHide;
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if Editor = FEditorPanel then
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begin
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if (FExpandedRow >= 0) and (FExpandedRow < RowCount) then
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RowHeights[FExpandedRow] := DefaultRowHeight;
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FExpandedRow := -1;
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if CanFocus then SetFocus;
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if assigned(FOnEditorPanelHide) then
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OnEditorPanelHide(self);
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DoOnResize;
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ResetSizes;
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Invalidate;
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end;
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end;
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procedure TDBDynamicGrid.DoEditorShow;
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begin
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if Editor = FEditorPanel then
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begin
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if ExpandEditorPanelBelowRow then
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RowHeights[Row] := FEditorPanel.Height + DefaultRowHeight
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else
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RowHeights[Row] := FEditorPanel.Height;
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FExpandedRow := Row;
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inherited DoEditorShow;
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UpdateEditorPanelBounds; {Position Editor Panel over expanded Row}
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FEditorPanel.PerformTab(true); {Select First Control}
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if assigned(FOnEditorPanelShow) then
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OnEditorPanelShow(self);
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end
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else
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inherited DoEditorShow;
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end;
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procedure TDBDynamicGrid.DrawCellText(aCol, aRow: Integer; aRect: TRect;
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aState: TGridDrawState; aText: String);
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var Style: TTextStyle;
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OldStyle: TTextStyle;
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begin
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if ExpandEditorPanelBelowRow and assigned(FEditorPanel) and FEditorPanel.Visible and (aRow = FExpandedRow) then
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begin
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{Draw the text at the top of the cell}
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Style := Canvas.TextStyle;
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OldStyle := Style;
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try
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Style.Layout := tlTop;
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Canvas.TextStyle := Style;
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inherited DrawCellText(aCol, aRow, aRect, aState, aText);
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finally
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Canvas.TextStyle := OldStyle;
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end;
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end
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else
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inherited DrawCellText(aCol, aRow, aRect, aState, aText);
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end;
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function TDBDynamicGrid.EditingAllowed(ACol: Integer): Boolean;
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begin
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Result := ((FEditorPanel <> nil) and (FEditorPanel = Editor))
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or inherited EditingAllowed(ACol);
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end;
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461 |
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procedure TDBDynamicGrid.EditorHide;
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begin
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if assigned(FOnBeforeEditorHide) then
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OnBeforeEditorHide(self);
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inherited EditorHide;
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end;
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procedure TDBDynamicGrid.IndicatorClicked(Button: TMouseButton;
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Shift: TShiftState);
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begin
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if assigned(FEditorPanel) then
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begin
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if FEditorPanel.Visible then
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HideEditorPanel
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else
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ShowEditorPanel;
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end;
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end;
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480 |
|
481 |
procedure TDBDynamicGrid.KeyDown(var Key: Word; Shift: TShiftState);
|
482 |
begin
|
483 |
if (Key = VK_F2) and (Shift = []) and assigned(FEditorPanel) then
|
484 |
begin
|
485 |
if not FEditorPanel.Visible then
|
486 |
ShowEditorPanel
|
487 |
end
|
488 |
else
|
489 |
inherited KeyDown(Key, Shift);
|
490 |
end;
|
491 |
|
492 |
procedure TDBDynamicGrid.DoShowEditorPanel(Data: PtrInt);
|
493 |
begin
|
494 |
if AppDestroying in Application.Flags then Exit;
|
495 |
ShowEditorPanel;
|
496 |
end;
|
497 |
|
498 |
procedure TDBDynamicGrid.PositionTotals;
|
499 |
var I: integer;
|
500 |
acol: TDBDynamicGridColumn;
|
501 |
LPos: integer;
|
502 |
begin
|
503 |
LPos := Left;
|
504 |
for I := 0 to FirstGridColumn - 1 do
|
505 |
LPos := LPos + ColWidths[I];
|
506 |
|
507 |
for I := 0 to Columns.Count - 1 do
|
508 |
begin
|
509 |
acol := TDBDynamicGridColumn(Columns[I]);
|
510 |
if assigned(acol.FColumnTotalsControl) then
|
511 |
begin
|
512 |
acol.FColumnTotalsControl.AutoSize := false;
|
513 |
acol.FColumnTotalsControl.Left := LPos;
|
514 |
acol.FColumnTotalsControl.Width := acol.Width
|
515 |
end;
|
516 |
LPos := LPos + acol.Width;
|
517 |
end;
|
518 |
end;
|
519 |
|
520 |
procedure TDBDynamicGrid.KeyDownHandler(Sender: TObject; var Key: Word;
|
521 |
Shift: TShiftState);
|
522 |
var Done: boolean;
|
523 |
begin
|
524 |
if Visible and assigned(FEditorPanel) and FEditorPanel.Visible and FWeHaveFocus then
|
525 |
begin
|
526 |
Done := false;
|
527 |
if assigned(FOnKeyDownHander) then
|
528 |
OnKeyDownHander(Sender,Key,Shift,Done);
|
529 |
if Done then Exit;
|
530 |
|
531 |
{Allow Scrolling}
|
532 |
if Key in [VK_UP,VK_DOWN] then
|
533 |
KeyDown(Key,Shift)
|
534 |
else
|
535 |
{Cancel Editor}
|
536 |
if Key = VK_ESCAPE then
|
537 |
begin
|
538 |
if DataLink.DataSet.State in [dsInsert,dsEdit] then
|
539 |
DataLink.DataSet.Cancel;
|
540 |
KeyDown(Key,Shift);
|
541 |
end
|
542 |
{save}
|
543 |
else
|
544 |
if Key = VK_F2 then
|
545 |
HideEditorPanel;
|
546 |
end
|
547 |
end;
|
548 |
|
549 |
procedure TDBDynamicGrid.SetEditorPanel(AValue: TWinControl);
|
550 |
begin
|
551 |
if FEditorPanel = AValue then Exit;
|
552 |
if FEditorPanel <> nil then
|
553 |
RemoveFreeNotification(FEditorPanel);
|
554 |
FEditorPanel := AValue;
|
555 |
FreeNotification(FEditorPanel);
|
556 |
end;
|
557 |
|
558 |
procedure TDBDynamicGrid.ChangeBounds(ALeft, ATop, AWidth, AHeight: integer;
|
559 |
KeepBase: boolean);
|
560 |
begin
|
561 |
if assigned(FEditorPanel) and FEditorPanel.Visible then
|
562 |
Application.QueueAsyncCall(@DoShowEditorPanel,0); {Restore afterwards if necessary}
|
563 |
inherited ChangeBounds(ALeft, ATop, AWidth, AHeight, KeepBase);
|
564 |
end;
|
565 |
|
566 |
procedure TDBDynamicGrid.DoEnter;
|
567 |
begin
|
568 |
inherited DoEnter;
|
569 |
FWeHaveFocus := true;
|
570 |
end;
|
571 |
|
572 |
procedure TDBDynamicGrid.DoExit;
|
573 |
begin
|
574 |
FWeHaveFocus := false;
|
575 |
inherited DoExit;
|
576 |
end;
|
577 |
|
578 |
procedure TDBDynamicGrid.Loaded;
|
579 |
begin
|
580 |
inherited Loaded;
|
581 |
if assigned(FEditorPanel) and not (csDesigning in ComponentState)then
|
582 |
FEditorPanel.Visible := false;
|
583 |
DoGridResize
|
584 |
end;
|
585 |
|
586 |
procedure TDBDynamicGrid.DoOnResize;
|
587 |
begin
|
588 |
inherited DoOnResize;
|
589 |
DoGridResize
|
590 |
end;
|
591 |
|
592 |
function TDBDynamicGrid.CreateColumns: TGridColumns;
|
593 |
begin
|
594 |
result := TDBGridColumns.Create(Self, TDBDynamicGridColumn);
|
595 |
end;
|
596 |
|
597 |
procedure TDBDynamicGrid.HeaderSized(IsColumn: Boolean; Index: Integer);
|
598 |
begin
|
599 |
inherited HeaderSized(IsColumn, Index);
|
600 |
PositionTotals
|
601 |
end;
|
602 |
|
603 |
procedure TDBDynamicGrid.MouseDown(Button: TMouseButton; Shift: TShiftState; X,
|
604 |
Y: Integer);
|
605 |
var Coord: TGridCoord;
|
606 |
begin
|
607 |
inherited MouseDown(Button, Shift, X, Y);
|
608 |
|
609 |
Coord := MouseCoord(X,Y);
|
610 |
if (Coord.X = 0) and (Coord.Y > 0) then
|
611 |
IndicatorClicked(Button,Shift);
|
612 |
end;
|
613 |
|
614 |
procedure TDBDynamicGrid.Notification(AComponent: TComponent;
|
615 |
Operation: TOperation);
|
616 |
begin
|
617 |
inherited Notification(AComponent, Operation);
|
618 |
if (Operation = opRemove) and
|
619 |
(AComponent = FEditorPanel) then FEditorPanel := nil;
|
620 |
end;
|
621 |
|
622 |
procedure TDBDynamicGrid.TopLeftChanged;
|
623 |
begin
|
624 |
inherited TopLeftChanged;
|
625 |
UpdateEditorPanelBounds;
|
626 |
end;
|
627 |
|
628 |
procedure TDBDynamicGrid.UpdateActive;
|
629 |
begin
|
630 |
inherited UpdateActive;
|
631 |
|
632 |
if not (csLoading in ComponentState) and assigned(DataLink) and
|
633 |
assigned(DataLink.DataSet) and (DataLink.DataSet.State = dsInsert) then
|
634 |
Application.QueueAsyncCall(@DoShowEditorPanel,0);
|
635 |
end;
|
636 |
|
637 |
procedure TDBDynamicGrid.UpdateEditorPanelBounds;
|
638 |
var R: TRect;
|
639 |
Dummy: integer;
|
640 |
begin
|
641 |
if assigned(FEditorPanel) and FEditorPanel.Visible and
|
642 |
(FExpandedRow >= 0) and (FExpandedRow < RowCount) then
|
643 |
begin
|
644 |
// Upper and Lower bounds for this row
|
645 |
ColRowToOffSet(False, True, FExpandedRow, R.Top, R.Bottom);
|
646 |
//Left Bound for visible Columns
|
647 |
ColRowToOffSet(True,True,1,R.Left,Dummy);
|
648 |
//Right Bound for visible columns
|
649 |
ColRowToOffSet(True,True,ColCount - 1,Dummy,R.Right);
|
650 |
if ExpandEditorPanelBelowRow then
|
651 |
R.Top := R.Top + DefaultRowHeight;
|
652 |
FEditorPanel.BoundsRect := R;
|
653 |
end;
|
654 |
end;
|
655 |
|
656 |
procedure TDBDynamicGrid.UpdateShowing;
|
657 |
begin
|
658 |
inherited UpdateShowing;
|
659 |
DoGridResize
|
660 |
end;
|
661 |
|
662 |
procedure TDBDynamicGrid.HideEditorPanel;
|
663 |
begin
|
664 |
if Editor = FEditorPanel then
|
665 |
EditorMode := false;
|
666 |
end;
|
667 |
|
668 |
procedure TDBDynamicGrid.ShowEditorPanel;
|
669 |
begin
|
670 |
if (csDesigning in ComponentState) or
|
671 |
(DataSource = nil) or (DataSource.DataSet = nil)
|
672 |
or ((DataSource.DataSet.RecordCount = 0) and (DataSource.DataSet.State <> dsInsert)) then
|
673 |
Exit;
|
674 |
Editor := FEditorPanel;
|
675 |
EditorMode := true;
|
676 |
end;
|
677 |
|
678 |
constructor TDBDynamicGrid.Create(TheComponent: TComponent);
|
679 |
begin
|
680 |
inherited Create(TheComponent);
|
681 |
ScrollBars := ssAutoVertical;
|
682 |
if not (csDesigning in ComponentState) then
|
683 |
Application.AddOnKeyDownBeforeHandler(@KeyDownHandler,false);
|
684 |
end;
|
685 |
|
686 |
destructor TDBDynamicGrid.Destroy;
|
687 |
begin
|
688 |
if not (csDesigning in ComponentState) then
|
689 |
Application.RemoveOnKeyDownBeforeHandler(@KeyDownHandler);
|
690 |
inherited Destroy;
|
691 |
end;
|
692 |
|
693 |
procedure TDBDynamicGrid.ResizeColumns;
|
694 |
begin
|
695 |
DoGridResize;
|
696 |
end;
|
697 |
|
698 |
{ TDBDynamicGridColumn }
|
699 |
|
700 |
procedure TDBDynamicGridColumn.SetWidth(AValue: integer);
|
701 |
begin
|
702 |
if Width = AValue then Exit;
|
703 |
inherited Width := AValue;
|
704 |
if not TDBDynamicGrid(Grid).FResizing then
|
705 |
FDesignWidth := Width
|
706 |
end;
|
707 |
|
708 |
function TDBDynamicGridColumn.GetWidth: integer;
|
709 |
begin
|
710 |
Result := inherited Width
|
711 |
end;
|
712 |
|
713 |
{ TDBLookupCellEditor }
|
714 |
|
715 |
procedure TDBLookupCellEditor.WndProc(var TheMessage: TLMessage);
|
716 |
begin
|
717 |
if TheMessage.msg=LM_KILLFOCUS then begin
|
718 |
if HWND(TheMessage.WParam) = HWND(Handle) then begin
|
719 |
// lost the focus but it returns to ourselves
|
720 |
// eat the message.
|
721 |
TheMessage.Result := 0;
|
722 |
exit;
|
723 |
end;
|
724 |
end;
|
725 |
inherited WndProc(TheMessage);
|
726 |
end;
|
727 |
|
728 |
procedure TDBLookupCellEditor.CloseUp;
|
729 |
begin
|
730 |
UpdateData(nil); {Force Record Update}
|
731 |
if FGrid<>nil then
|
732 |
Begin
|
733 |
(FGrid as TIBDynamicGrid).EditorTextChanged(FCol, FRow, Trim(Text));
|
734 |
(FGrid as TIBDynamicGrid).UpdateData;
|
735 |
end;
|
736 |
inherited CloseUp;
|
737 |
end;
|
738 |
|
739 |
procedure TDBLookupCellEditor.KeyDown(var Key: Word; Shift: TShiftState);
|
740 |
begin
|
741 |
if (Key = VK_TAB) and assigned(FGrid) then
|
742 |
TIBDynamicGrid(FGrid).KeyDown(Key,Shift)
|
743 |
else
|
744 |
inherited KeyDown(Key, Shift);
|
745 |
end;
|
746 |
|
747 |
procedure TDBLookupCellEditor.Loaded;
|
748 |
begin
|
749 |
inherited Loaded;
|
750 |
Text := '';
|
751 |
end;
|
752 |
|
753 |
procedure TDBLookupCellEditor.msg_GetValue(var Msg: TGridMessage);
|
754 |
begin
|
755 |
CheckAndInsert;
|
756 |
Msg.Col := FCol;
|
757 |
Msg.Row := FRow;
|
758 |
Msg.Value:= Trim(Text);
|
759 |
end;
|
760 |
|
761 |
procedure TDBLookupCellEditor.msg_SetGrid(var Msg: TGridMessage);
|
762 |
begin
|
763 |
FGrid:=Msg.Grid;
|
764 |
Msg.Options:=EO_AUTOSIZE or EO_SELECTALL or EO_HOOKKEYPRESS or EO_HOOKKEYUP;
|
765 |
end;
|
766 |
|
767 |
procedure TDBLookupCellEditor.msg_SetValue(var Msg: TGridMessage);
|
768 |
begin
|
769 |
FGrid := Msg.Grid;
|
770 |
FCol := Msg.Col;
|
771 |
FRow := Msg.Row;
|
772 |
FEditText := Msg.Value;
|
773 |
SelStart := Length(Text);
|
774 |
TIBDynamicGrid(FGrid).SetupEditor(self,FCol);
|
775 |
end;
|
776 |
|
777 |
procedure TDBLookupCellEditor.msg_SetPos(var Msg: TGridMessage);
|
778 |
begin
|
779 |
FCol := Msg.Col;
|
780 |
FRow := Msg.Row;
|
781 |
end;
|
782 |
|
783 |
procedure TDBLookupCellEditor.msg_GetGrid(var Msg: TGridMessage);
|
784 |
begin
|
785 |
Msg.Grid := FGrid;
|
786 |
Msg.Options:= EO_IMPLEMENTED;
|
787 |
end;
|
788 |
|
789 |
procedure TDBLookupCellEditor.EditingDone;
|
790 |
begin
|
791 |
inherited EditingDone;
|
792 |
if FGrid<>nil then
|
793 |
FGrid.EditingDone;
|
794 |
end;
|
795 |
|
796 |
{ TIBDynamicGridColumn }
|
797 |
|
798 |
procedure TIBDynamicGridColumn.DoSetupEditor(Data: PtrInt);
|
799 |
var Editor: TDBlookupCellEditor;
|
800 |
begin
|
801 |
if AppDestroying in Application.Flags then Exit;
|
802 |
|
803 |
Editor := TDBlookupCellEditor(Data);
|
804 |
Editor.DataSource := nil;
|
805 |
Editor.ListSource := nil; {Allows change without causing an error}
|
806 |
Editor.KeyValue := NULL;
|
807 |
|
808 |
with DBLookupProperties do
|
809 |
begin
|
810 |
{Setup Properties}
|
811 |
Editor.AutoInsert := AutoInsert;
|
812 |
Editor.AutoComplete := AutoComplete;
|
813 |
Editor.AutoCompleteText := AutoCompleteText;
|
814 |
Editor.KeyPressInterval := KeyPressInterval;
|
815 |
Editor.Style := Style;
|
816 |
Editor.ItemHeight := ItemHeight;
|
817 |
Editor.ItemWidth := ItemWidth;
|
818 |
Editor.RelationName := RelationName;
|
819 |
Editor.OnAutoInsert := OnAutoInsert;
|
820 |
Editor.OnCanAutoInsert := OnCanAutoInsert;
|
821 |
Editor.OnDrawItem := OnDrawItem;
|
822 |
|
823 |
{Setup Data Links}
|
824 |
if KeyField <> '' then
|
825 |
Editor.KeyField := KeyField
|
826 |
else
|
827 |
Editor.KeyField := ListField;
|
828 |
Editor.ListField := ListField;
|
829 |
Editor.DataField := DataFieldName;
|
830 |
end;
|
831 |
Application.QueueAsyncCall(@DoSetDataSources,PtrInt(Editor));
|
832 |
end;
|
833 |
|
834 |
procedure TIBDynamicGridColumn.DoSetDataSources(Data: PtrInt);
|
835 |
var Editor: TDBlookupCellEditor;
|
836 |
begin
|
837 |
if AppDestroying in Application.Flags then Exit;
|
838 |
|
839 |
Editor := TDBlookupCellEditor(Data);
|
840 |
with DBLookupProperties do
|
841 |
begin
|
842 |
Editor.ListSource := ListSource;
|
843 |
if DataFieldName <> '' then
|
844 |
Editor.DataSource := TDBGrid(Grid).DataSource;
|
845 |
end;
|
846 |
Editor.Text := Editor.FEditText;
|
847 |
end;
|
848 |
|
849 |
procedure TIBDynamicGridColumn.SetInitialSortColumn(AValue: boolean);
|
850 |
begin
|
851 |
if FInitialSortColumn = AValue then Exit;
|
852 |
FInitialSortColumn := AValue;
|
853 |
(Grid as TIBDynamicGrid).UpdateSortColumn(self)
|
854 |
end;
|
855 |
|
856 |
procedure TIBDynamicGridColumn.SetupEditor(Editor: TDBlookupCellEditor);
|
857 |
begin
|
858 |
Application.QueueAsyncCall(@DoSetupEditor,PtrInt(Editor));
|
859 |
end;
|
860 |
|
861 |
constructor TIBDynamicGridColumn.Create(ACollection: TCollection);
|
862 |
begin
|
863 |
inherited Create(ACollection);
|
864 |
FDBLookupProperties := TDBLookupProperties.Create(self);
|
865 |
end;
|
866 |
|
867 |
destructor TIBDynamicGridColumn.Destroy;
|
868 |
begin
|
869 |
if assigned(FDBLookupProperties) then FDBLookupProperties.Free;
|
870 |
inherited Destroy;
|
871 |
end;
|
872 |
|
873 |
|
874 |
{ TIBDynamicGrid }
|
875 |
|
876 |
procedure TIBDynamicGrid.ColumnHeaderClick(Index: integer);
|
877 |
begin
|
878 |
FColHeaderClick := true;
|
879 |
try
|
880 |
if Index = FLastColIndex then
|
881 |
FDescending := not FDescending;
|
882 |
|
883 |
if assigned(FOnColumnHeaderClick) then
|
884 |
OnColumnHeaderClick(self,Index);
|
885 |
|
886 |
FLastColIndex := Index;
|
887 |
if assigned(DataSource) and assigned(DataSource.DataSet) and DataSource.DataSet.Active then
|
888 |
begin
|
889 |
DataSource.DataSet.Active := false;
|
890 |
Application.QueueAsyncCall(@DoReopen,0)
|
891 |
end;
|
892 |
finally
|
893 |
FColHeaderClick := false
|
894 |
end;
|
895 |
end;
|
896 |
|
897 |
function TIBDynamicGrid.GetDataSource: TDataSource;
|
898 |
begin
|
899 |
if assigned(DataLink) then
|
900 |
Result := inherited DataSource
|
901 |
else
|
902 |
Result := nil;
|
903 |
end;
|
904 |
|
905 |
function TIBDynamicGrid.GetEditorBorderStyle: TBorderStyle;
|
906 |
begin
|
907 |
if Editor = FDBLookupCellEditor then
|
908 |
Result := FDBLookupCellEditor.BorderStyle
|
909 |
else
|
910 |
Result := inherited EditorBorderStyle
|
911 |
end;
|
912 |
|
913 |
procedure TIBDynamicGrid.SetDataSource(AValue: TDataSource);
|
914 |
begin
|
915 |
inherited DataSource := AValue;
|
916 |
IBControlLinkChanged;
|
917 |
end;
|
918 |
|
919 |
procedure TIBDynamicGrid.SetEditorBorderStyle(AValue: TBorderStyle);
|
920 |
begin
|
921 |
inherited EditorBorderStyle := AValue;
|
922 |
if FDBLookupCellEditor.BorderStyle <> AValue then
|
923 |
begin
|
924 |
FDBLookupCellEditor.BorderStyle := AValue;
|
925 |
if (Editor = FDBLookupCellEditor) and EditorMode then
|
926 |
EditorWidthChanged(Col,FDBLookupCellEditor.Width);
|
927 |
end;
|
928 |
end;
|
929 |
|
930 |
procedure TIBDynamicGrid.ProcessColumns;
|
931 |
var i: integer;
|
932 |
begin
|
933 |
for i := 0 to Columns.Count - 1 do
|
934 |
begin
|
935 |
if TIBDynamicGridColumn(columns[i]).InitialSortColumn then
|
936 |
FLastColIndex := i
|
937 |
end
|
938 |
end;
|
939 |
|
940 |
procedure TIBDynamicGrid.SetIndexFieldNames(AValue: string);
|
941 |
var idx: integer;
|
942 |
begin
|
943 |
if FIndexFieldNames = AValue then Exit;
|
944 |
FIndexFieldNames := AValue;
|
945 |
idx := 1;
|
946 |
FIndexFieldsList.Clear;
|
947 |
while idx <= Length(AValue) do
|
948 |
FIndexFieldsList.Add(ExtractFieldName(AValue,idx));
|
949 |
end;
|
950 |
|
951 |
procedure TIBDynamicGrid.UpdateSQL(Sender: TObject; Parser: TSelectSQLParser);
|
952 |
var OrderBy: string;
|
953 |
FieldPosition: integer;
|
954 |
begin
|
955 |
if assigned(DataSource) and assigned(DataSource.DataSet)
|
956 |
and (DataSource.DataSet is TIBCustomDataSet) then
|
957 |
begin
|
958 |
if (FLastColIndex < 0) or (FLastColIndex >= Columns.Count) then Exit;
|
959 |
FieldPosition := Parser.GetFieldPosition(Columns[FLastColIndex].FieldName);
|
960 |
if FieldPosition = 0 then Exit;
|
961 |
|
962 |
if Descending then
|
963 |
Parser.OrderByClause := IntToStr(FieldPosition) + ' desc'
|
964 |
else
|
965 |
Parser.OrderByClause := IntToStr(FieldPosition) + ' asc';
|
966 |
|
967 |
if assigned(FOnUpdateSortOrder) then
|
968 |
begin
|
969 |
OrderBy := Parser.OrderByClause;
|
970 |
OnUpdateSortOrder(self,FLastColIndex,OrderBy);
|
971 |
Parser.OrderByClause := OrderBy
|
972 |
end
|
973 |
end;
|
974 |
end;
|
975 |
|
976 |
procedure TIBDynamicGrid.UpdateSortColumn(Sender: TObject);
|
977 |
var i: integer;
|
978 |
begin
|
979 |
if Sender is TIBDynamicGridColumn then
|
980 |
begin
|
981 |
for i := 0 to Columns.Count -1 do
|
982 |
if TObject(Columns[i]) <> Sender then
|
983 |
TIBDynamicGridColumn(Columns[i]).InitialSortColumn := false
|
984 |
end
|
985 |
|
986 |
end;
|
987 |
|
988 |
procedure TIBDynamicGrid.RestorePosition;
|
989 |
begin
|
990 |
if assigned(DataSource) and assigned(DataSource.DataSet) and DataSource.DataSet.Active then
|
991 |
begin
|
992 |
if assigned(FOnRestorePosition) then
|
993 |
OnRestorePosition(self,@FBookmark);
|
994 |
if (Length(FBookmark) > 0) and
|
995 |
DataSource.DataSet.Locate(FIndexFieldNames,FBookmark,[]) then Exit;
|
996 |
|
997 |
if FDefaultPositionAtEnd then
|
998 |
DataSource.DataSet.Last
|
999 |
end;
|
1000 |
end;
|
1001 |
|
1002 |
procedure TIBDynamicGrid.SavePosition;
|
1003 |
var i: integer;
|
1004 |
F: TField;
|
1005 |
begin
|
1006 |
if FIndexFieldsList = nil then Exit;
|
1007 |
|
1008 |
SetLength(FBookmark,FIndexFieldsList.Count);
|
1009 |
for i := 0 to FIndexFieldsList.Count - 1 do
|
1010 |
begin
|
1011 |
F := DataSource.DataSet.FindField(FIndexFieldsList[i]);
|
1012 |
if assigned(F) then
|
1013 |
FBookmark[i] := F.AsVariant;
|
1014 |
end;
|
1015 |
end;
|
1016 |
|
1017 |
procedure TIBDynamicGrid.DoReOpen(Data: PtrInt);
|
1018 |
begin
|
1019 |
DataSource.DataSet.Active := true;
|
1020 |
end;
|
1021 |
|
1022 |
procedure TIBDynamicGrid.IBControlLinkChanged;
|
1023 |
begin
|
1024 |
if (DataSource <> nil) and (DataSource.DataSet <> nil) and (DataSource.DataSet is TIBParserDataSet) then
|
1025 |
FIBControlLink.IBDataSet := TIBCustomDataSet(DataSource.DataSet)
|
1026 |
else
|
1027 |
FIBControlLink.IBDataSet := nil;
|
1028 |
end;
|
1029 |
|
1030 |
procedure TIBDynamicGrid.SetupEditor(aEditor: TDBLookupCellEditor; aCol: integer
|
1031 |
);
|
1032 |
var C: TIBDynamicGridColumn;
|
1033 |
begin
|
1034 |
C := ColumnFromGridColumn(aCol) as TIBDynamicGridColumn;
|
1035 |
if (c <> nil) then
|
1036 |
C.SetupEditor(aEditor);
|
1037 |
end;
|
1038 |
|
1039 |
procedure TIBDynamicGrid.DoEditorHide;
|
1040 |
var i: integer;
|
1041 |
begin
|
1042 |
inherited DoEditorHide;
|
1043 |
if assigned(EditorPanel) then
|
1044 |
for i := 0 to EditorPanel.ControlCount -1 do
|
1045 |
if EditorPanel.Controls[i] is TIBLookupComboEditBox then
|
1046 |
EditorPanel.Controls[i].Perform(CM_VISIBLECHANGED, WParam(ord(false)), 0);
|
1047 |
end;
|
1048 |
|
1049 |
procedure TIBDynamicGrid.Loaded;
|
1050 |
begin
|
1051 |
inherited Loaded;
|
1052 |
ProcessColumns;
|
1053 |
end;
|
1054 |
|
1055 |
function TIBDynamicGrid.CreateColumns: TGridColumns;
|
1056 |
begin
|
1057 |
result := TDBGridColumns.Create(Self, TIBDynamicGridColumn);
|
1058 |
end;
|
1059 |
|
1060 |
procedure TIBDynamicGrid.MouseDown(Button: TMouseButton; Shift: TShiftState; X,
|
1061 |
Y: Integer);
|
1062 |
var Coord: TGridCoord;
|
1063 |
obe: boolean;
|
1064 |
function PtInRect(const Rect : TRect;const p : TPoint) : Boolean;
|
1065 |
|
1066 |
begin
|
1067 |
PtInRect:=(p.y>=Rect.Top) and
|
1068 |
(p.y<Rect.Bottom) and
|
1069 |
(p.x>=Rect.Left) and
|
1070 |
(p.x<Rect.Right);
|
1071 |
end;
|
1072 |
begin
|
1073 |
if (Editor is TDBLookupCellEditor) and Editor.Visible
|
1074 |
and not PtInRect(Editor.BoundsRect,Point(X,Y)) then
|
1075 |
Editor.Perform(CM_EXIT,0,0); {Do insert new value if necessary}
|
1076 |
inherited MouseDown(Button, Shift, X, Y);
|
1077 |
obe := AllowOutboundEvents;
|
1078 |
AllowOutboundEvents := false;
|
1079 |
try
|
1080 |
Coord := MouseCoord(X,Y);
|
1081 |
if AllowColumnSort and (Coord.X <> -1) and (FixedRows > 0) and
|
1082 |
(Coord.Y = 0) and (MouseCoord(X+5,Y).X = Coord.X) {not on boundary}
|
1083 |
and (MouseCoord(X-5,Y).X = Coord.X) then
|
1084 |
ColumnHeaderClick(Coord.X-1);
|
1085 |
finally
|
1086 |
AllowOutboundEvents := obe
|
1087 |
end;
|
1088 |
end;
|
1089 |
|
1090 |
procedure TIBDynamicGrid.MoveSelection;
|
1091 |
begin
|
1092 |
inherited MoveSelection;
|
1093 |
SavePosition;
|
1094 |
end;
|
1095 |
|
1096 |
procedure TIBDynamicGrid.LinkActive(Value: Boolean);
|
1097 |
begin
|
1098 |
IBControlLinkChanged;
|
1099 |
inherited LinkActive(Value);
|
1100 |
if (FActive <> Value) and Value then
|
1101 |
RestorePosition;
|
1102 |
FActive := Value
|
1103 |
end;
|
1104 |
|
1105 |
procedure TIBDynamicGrid.Notification(AComponent: TComponent;
|
1106 |
Operation: TOperation);
|
1107 |
begin
|
1108 |
inherited Notification(AComponent, Operation);
|
1109 |
if (Operation = opRemove) and
|
1110 |
(FIBControlLink <> nil) and (AComponent = DataSource) then FIBControlLink.IBDataSet := nil;
|
1111 |
end;
|
1112 |
|
1113 |
procedure TIBDynamicGrid.UpdateActive;
|
1114 |
begin
|
1115 |
inherited UpdateActive;
|
1116 |
if assigned(DataLink) and assigned(DataLink.DataSet) and
|
1117 |
DataLink.DataSet.Active and (DataLink.DataSet.State = dsInsert) then
|
1118 |
SavePosition;
|
1119 |
end;
|
1120 |
|
1121 |
constructor TIBDynamicGrid.Create(TheComponent: TComponent);
|
1122 |
begin
|
1123 |
inherited Create(TheComponent);
|
1124 |
FAllowColumnSort := true;
|
1125 |
FIBControlLink := TIBGridControlLink.Create(self);
|
1126 |
FIndexFieldsList := TStringList.Create;
|
1127 |
FIndexFieldsList.Delimiter := ';';
|
1128 |
FIndexFieldsList.StrictDelimiter := true;
|
1129 |
FDBLookupCellEditor := TDBLookupCellEditor.Create(nil);
|
1130 |
FDBLookupCellEditor.Name := 'DBLookupCellEditor';
|
1131 |
FDBLookupCellEditor.Visible := False;
|
1132 |
FDBLookupCellEditor.AutoSize := false;
|
1133 |
end;
|
1134 |
|
1135 |
destructor TIBDynamicGrid.Destroy;
|
1136 |
begin
|
1137 |
if assigned(FIBControlLink) then FIBControlLink.Free;
|
1138 |
if assigned(FIndexFieldsList) then FIndexFieldsList.Free;
|
1139 |
if assigned(FDBLookupCellEditor) then FDBLookupCellEditor.Free;
|
1140 |
inherited Destroy;
|
1141 |
end;
|
1142 |
|
1143 |
function TIBDynamicGrid.EditorByStyle(Style: TColumnButtonStyle): TWinControl;
|
1144 |
var C: TIBDynamicGridColumn;
|
1145 |
bs: TColumnButtonStyle;
|
1146 |
begin
|
1147 |
C := ColumnFromGridColumn(Col) as TIBDynamicGridColumn;
|
1148 |
if C <> nil then
|
1149 |
begin
|
1150 |
bs := C.ButtonStyle;
|
1151 |
if (bs in [cbsAuto,cbsPickList]) and assigned(C.DBLookupProperties.ListSource) then
|
1152 |
begin
|
1153 |
Result := FDBLookupCellEditor;
|
1154 |
Exit;
|
1155 |
end;
|
1156 |
end;
|
1157 |
Result := inherited EditorByStyle(Style);
|
1158 |
end;
|
1159 |
|
1160 |
end.
|