unit U_SelExportField;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ExtCtrls, Grids, DBGrids, RM_FormReport, RM_PDBGrid,
  DB,IniFiles, RM_Common, RM_Class, RM_e_Xls, cxStyles, cxCustomData,
  cxGraphics, cxFilter, cxData, cxDataStorage, cxEdit, cxDBData,
  cxGridLevel, cxClasses, cxControls, cxGridCustomView,
  cxGridCustomTableView, cxGridTableView, cxGridDBTableView, cxGrid,
  cxLookAndFeels, cxLookAndFeelPainters,  
  cxNavigator, dxDateRanges;

type
  TfrmSelExportField = class(TForm)
    Button1: TButton;
    Button2: TButton;
    ExportDataSource: TDataSource;
    ExpGrid: TcxGridDBTableView;
    cxGrid1Level1: TcxGridLevel;
    cxGrid1: TcxGrid;
    Panel2: TScrollBox;
    Label4: TLabel;
    CheckBox1: TCheckBox;
    CheckBox2: TCheckBox;
    procedure Button1Click(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure FormDestroy(Sender: TObject);
    procedure FormShow(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure CheckBox1Click(Sender: TObject);
    procedure CheckBox2Click(Sender: TObject);
  private
    procedure  CreateCheckBox();
    procedure  ExportData();
    procedure  ReadINIFile(fieldname:string);
    procedure  WriteINIFile(fieldname:string);
    Function   IsINIFile(fieldname:string):Boolean;
    procedure  GetExportFields();
    procedure  IsCheck();
    { Private declarations }
  public
    ExportFields,IniName:string;

    { Public declarations }
  end;

var
  frmSelExportField: TfrmSelExportField;

implementation

uses U_Fun;

{$R *.dfm}
procedure  TfrmSelExportField.CreateCheckBox();
var
  i,j,FTop,FLeft,Fdiv,FMod,z:Integer;// mod 余数，div商
  FCheckBox:TCheckBox;
begin
  z:=0;
  for i:=0 to ExpGrid.ColumnCount-1 do
  begin
    if ExpGrid.Columns[i].Visible=True then
    begin
      Fdiv:=(z+1) div 3;
      FMod:=(z+1) mod 3;
      FCheckBox:=TCheckBox.Create(Self);
      FCheckBox.Caption:=Trim(ExpGrid.Columns[i].Caption);
      FCheckBox.Tag:=i;
      FCheckBox.Parent:=Panel2;
      FCheckBox.Checked:=True;
      if FMod>0 then
        FCheckBox.Top:=36*(Fdiv+1)
      else
        FCheckBox.Top:=36*Fdiv;
      if FMod=1 then
        FCheckBox.Left:=29
      else if FMod=2 then
        FCheckBox.Left:=163
      else if FMod=0 then
        FCheckBox.Left:=305;
      z:=z+1;
    end;
  end;
end;

procedure TfrmSelExportField.Button1Click(Sender: TObject);
begin
  //ShowMessage('10除以3取余'+inttostr(10 mod 3)+',取整'+inttostr(10 div 3));
  ExportData();
  GetExportFields();
  if IsINIFile(IniName)=True then
  begin
    DeleteFile(IniName);
  end;
    WriteINIFile(IniName);
end;

procedure TfrmSelExportField.FormClose(Sender: TObject;
  var Action: TCloseAction);
begin
  Action:=caFree;
end;

procedure TfrmSelExportField.FormDestroy(Sender: TObject);
begin
  frmSelExportField:=nil;
end;

procedure TfrmSelExportField.FormShow(Sender: TObject);
begin
  CreateCheckBox();
  ReadINIFile(IniName);
  IsCheck();
end;
procedure TfrmSelExportField.IsCheck();
var
  i:Integer;
  fsj:string;
begin
  with Panel2 do
  begin
    for i:=0 to Panel2.ControlCount-1 do
    begin
      if Controls[i] is TCheckBox then
      begin
        fsj:=Trim(TCheckBox(Controls[i]).Caption);
        if Pos(fsj,ExportFields)>0 then
          TCheckBox(Controls[i]).Checked:=True
        else
         TCheckBox(Controls[i]).Checked:=False;
      end;
    end;
  end;
end;

procedure TfrmSelExportField.ExportData();
var
  i,j:Integer;
begin
  j:=0;
  with Panel2 do
  begin
    for i:=0 to Panel2.ControlCount-1 do
    begin
      if Controls[i] is TCheckBox then
      begin
        if TCheckBox(Controls[i]).Checked=True then
        begin
          j:=1;
          ExpGrid.Columns[TCheckBox(Controls[i]).Tag].Visible:=True
        end else
        begin
          ExpGrid.Columns[TCheckBox(Controls[i]).Tag].Visible:=False;
        end;
      end;
    end;
  end;
  TcxGridToExcel(Trim(IniName),cxGrid1);
end;


procedure TfrmSelExportField.Button2Click(Sender: TObject);
begin
  Close;
end;

procedure TfrmSelExportField.ReadINIFile(fieldname:string);
var
  programIni:Tinifile;  //配置文件名
  FName:string;
begin
  FName:=ExtractFilePath(Application.ExeName)+'FieldExportSet\' +trim(fieldname)+'.INI';
  programIni:=Tinifile.create(FName);
  ExportFields:=programIni.ReadString('导出设置','导出字段','');
  programIni.Free;
end;
procedure TfrmSelExportField.GetExportFields();
var
  i:Integer;
begin
  ExportFields:='Begin';
  with Panel2 do
  begin
    for i:=0 to Panel2.ControlCount-1 do
    begin
      if Controls[i] is TCheckBox then
      begin
        if TCheckBox(Controls[i]).Checked then
        begin
          ExportFields:=ExportFields+'/'+TCheckBox(Controls[i]).Caption;
        end;
      end;
    end;
  end;
end;
//////////////////////////////////////////////////////////////////
  //写设置信息到INI文件
  //参数
//////////////////////////////////////////////////////////////////
procedure TfrmSelExportField.WriteINIFile(fieldname:string);
var
  programIni:Tinifile;  //配置文件名
  FName:string;
begin

  FName:=ExtractFilePath(Application.ExeName)+'FieldExportSet\'+trim(fieldname)+'.INI';
  if not DirectoryExists(ExtractFileDir(FName)) then
    CreateDir(ExtractFileDir(FName));
  programIni:=Tinifile.create(FName);
  programIni.WriteString('导出设置','导出字段',ExportFields);
  programIni.Free;
end;
//////////////////////////////////////////////////////////////////
  //判断InI文件是否存在
//////////////////////////////////////////////////////////////////
 Function TfrmSelExportField.IsINIFile(fieldname:string):Boolean;
 var
   FName:string;
 begin
   FName:=ExtractFilePath(Application.ExeName)+'FieldExportSet\'+trim(fieldname)+'.INI';
   if FileExists(FName) then
      Result:=True
   else
      Result:=false;
 end;

procedure TfrmSelExportField.CheckBox1Click(Sender: TObject);
var
  i:Integer;
begin
  if CheckBox1.Checked then
  begin
    CheckBox2.Checked:=False;
    with Panel2 do
    begin
      for i:=0 to Panel2.ControlCount-1 do
      begin
        if Controls[i] is TCheckBox then
        begin
          if (TCheckBox(Controls[i]).Name<>'CheckBox1') and (TCheckBox(Controls[i]).Name<>'CheckBox2') then
          begin
            TCheckBox(Controls[i]).Checked:=True;
          end;
        end;
      end;
    end;
  end;
  
end;

procedure TfrmSelExportField.CheckBox2Click(Sender: TObject);
var
  i:Integer;
begin
  if CheckBox2.Checked then
  begin
    CheckBox1.Checked:=False;
    with Panel2 do
    begin
      for i:=0 to Panel2.ControlCount-1 do
      begin
        if Controls[i] is TCheckBox then
        begin
          if (TCheckBox(Controls[i]).Name<>'CheckBox1') and (TCheckBox(Controls[i]).Name<>'CheckBox2') then
          begin
            TCheckBox(Controls[i]).Checked:=False;
          end;
        end;
      end;
    end;
  end;
  
end;

end.