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RXLib/.svn/pristine/3b/3bf9b08e175ddb850c932488f417d6b58e35b625.svn-base

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+{ rxdbgrid_findunit unit
+
+  Copyright (C) 2005-2017 Lagunov Aleksey alexs75@yandex.ru and Lazarus team
+  original conception from rx library for Delphi (c)
+
+  This library is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Library General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or (at your
+  option) any later version with the following modification:
+
+  As a special exception, the copyright holders of this library give you
+  permission to link this library with independent modules to produce an
+  executable, regardless of the license terms of these independent modules,and
+  to copy and distribute the resulting executable under terms of your choice,
+  provided that you also meet, for each linked independent module, the terms
+  and conditions of the license of that module. An independent module is a
+  module which is not derived from or based on this library. If you modify
+  this library, you may extend this exception to your version of the library,
+  but you are not obligated to do so. If you do not wish to do so, delete this
+  exception statement from your version.
+
+  This program is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
+  for more details.
+
+  You should have received a copy of the GNU Library General Public License
+  along with this library; if not, write to the Free Software Foundation,
+  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+}
+
+unit rxdbgrid_findunit;
+
+{$I rx.inc}
+
+interface
+
+uses
+  Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs, Buttons,
+  StdCtrls, ExtCtrls, rxdbgrid, DB;
+
+type
+
+  { TrxDBGridFindForm }
+
+  TrxDBGridFindForm = class(TForm)
+    BtnFind: TButton;
+    Button2: TButton;
+    CheckBox1: TCheckBox;
+    CheckBox2: TCheckBox;
+    ComboBox1: TComboBox;
+    Edit1: TEdit;
+    Label1: TLabel;
+    Label2: TLabel;
+    Panel1: TPanel;
+    RadioGroup1: TRadioGroup;
+    procedure BtnFindClick(Sender: TObject);
+    procedure Button2Click(Sender: TObject);
+    procedure FormCreate(Sender: TObject);
+    procedure FormShow(Sender: TObject);
+  private
+    FGrid:TRxDBGrid;
+    FDataSet:TDataSet;
+    procedure SetGrid(AGrid:TRxDBGrid);
+  public
+    { public declarations }
+  end; 
+
+procedure ShowRxDBGridFindForm(Grid:TRxDBGrid);
+
+implementation
+uses rxdbutils, DBGrids, rxdconst, LCLStrConsts;
+
+{$R *.lfm}
+
+procedure ShowRxDBGridFindForm(Grid: TRxDBGrid);
+var
+  rxDBGridFindForm: TrxDBGridFindForm;
+begin
+  rxDBGridFindForm:=TrxDBGridFindForm.Create(Application);
+  rxDBGridFindForm.SetGrid(Grid);
+  rxDBGridFindForm.ShowModal;
+  rxDBGridFindForm.Free;
+end;
+
+{ TrxDBGridFindForm }
+
+procedure TrxDBGridFindForm.Button2Click(Sender: TObject);
+begin
+  Close;
+end;
+
+procedure TrxDBGridFindForm.FormCreate(Sender: TObject);
+begin
+  Caption:=sRxDbGridFindCaption;
+  Label1.Caption:=sRxDbGridFindText;
+  Label2.Caption:=sRxDbGridFindOnField;
+  CheckBox1.Caption:=sRxDbGridFindCaseSens;
+  CheckBox2.Caption:=sRxDbGridFindPartial;
+  RadioGroup1.Caption:=sRxDbGridFindDirecion;
+  RadioGroup1.Items.Clear;
+  RadioGroup1.Items.Add(sRxDbGridFindRangeAll);
+  RadioGroup1.Items.Add(sRxDbGridFindRangeForw);
+  RadioGroup1.Items.Add(sRxDbGridFindRangeBack);
+  BtnFind.Caption:=sRxFindMore;
+  Button2.Caption:=rsMbClose;
+
+  RadioGroup1.ItemIndex:=0;
+end;
+
+procedure TrxDBGridFindForm.FormShow(Sender: TObject);
+begin
+  Edit1.SetFocus;
+end;
+
+procedure TrxDBGridFindForm.BtnFindClick(Sender: TObject);
+var
+  FieldName:string;
+  LOptions: TLocateOptions;
+  SearchOrigin:TRxSearchDirection;
+  P:TBookMark;
+  R:boolean;
+begin
+  { TODO -oalexs : Необходимо переделать поиск по колонке - искать всегда по строковому представлению. Иначе не ищет по дате-времени }
+  if Edit1.Text<>'' then
+  begin
+    try
+
+      FieldName:=FGrid.Columns[ComboBox1.ItemIndex].FieldName;
+      LOptions:=[];
+      if not CheckBox1.Checked then
+        LOptions:=LOptions+[loCaseInsensitive];
+
+      if CheckBox2.Checked then
+        LOptions:=LOptions+[loPartialKey];
+
+      SearchOrigin:=TRxSearchDirection(RadioGroup1.ItemIndex);
+      {$IFDEF NoAutomatedBookmark}
+      P:=FDataSet.GetBookmark;
+      {$ELSE}
+      P:=FDataSet.Bookmark;
+      {$ENDIF}
+      if SearchOrigin = rsdForward then
+        FDataSet.Next
+      else
+      if SearchOrigin = rsdBackward then
+        FDataSet.Prior;
+      R:=DataSetLocateThrough(FDataSet, FieldName, Edit1.Text, LOptions, SearchOrigin);
+    finally
+      {$IFDEF NoAutomatedBookmark}
+      if not R then
+        FDataSet.GotoBookmark(P);
+      FDataSet.FreeBookmark(P);
+      {$ELSE}
+      if not R then
+        FDataSet.Bookmark:=P;
+      {$ENDIF}
+    end;
+  end;
+end;
+{
+type
+  THckGrid = class(TCustomDBGrid)
+  end;
+}
+procedure TrxDBGridFindForm.SetGrid(AGrid: TRxDBGrid);
+var
+  i:integer;
+begin
+  if AGrid=FGrid then exit;
+  FGrid:=AGrid;
+  ComboBox1.Items.Clear;
+  if Assigned(AGrid) then
+  begin
+    for i:=0 to AGrid.Columns.Count-1 do
+    begin
+      if not (coDisableDialogFind in AGrid.Columns[i].Options) then
+        ComboBox1.Items.Add(AGrid.Columns[i].Title.Caption);
+    end;
+
+    ComboBox1.ItemIndex:=ComboBox1.Items.IndexOf(AGrid.SelectedColumn.Title.Caption);
+  end;
+
+  FDataSet:=nil;
+  if Assigned(FGrid) and Assigned(FGrid.DataSource) then
+    FDataSet:=FGrid.DataSource.DataSet;
+{  if Assigned(FGrid) and Assigned(THckGrid(FGrid).DataSource) then
+    FDataSet:=THckGrid(FGrid).DataSource.DataSet;}
+  BtnFind.Enabled:=Assigned(FDataSet) and FDataSet.Active
+end;
+
+end.
+