u_qxgl_gnsz.pas

来自「《delphi深度编程及其项目开发》」· PAS 代码 · 共 193 行

unit U_QXGL_GNSZ;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Forms, Dialogs, Controls, StdCtrls,
  Buttons, ExtCtrls, ComCtrls;

type
  TfrmQXGL_GNB = class(TForm)
    Panel1: TPanel;
    StatusBar1: TStatusBar;
    SrcLabel: TLabel;
    DstLabel: TLabel;
    IncludeBtn: TSpeedButton;
    IncAllBtn: TSpeedButton;
    ExcludeBtn: TSpeedButton;
    ExAllBtn: TSpeedButton;
    SrcList: TListBox;
    Dstlist: TListBox;
    Panel2: TPanel;
    btnOK: TSpeedButton;
    btnCancel: TSpeedButton;
    procedure IncludeBtnClick(Sender: TObject);
    procedure ExcludeBtnClick(Sender: TObject);
    procedure IncAllBtnClick(Sender: TObject);
    procedure ExcAllBtnClick(Sender: TObject);
    procedure SrcListDblClick(Sender: TObject);
    procedure DstlistDblClick(Sender: TObject);
    procedure btnOKClick(Sender: TObject);
    procedure btnCancelClick(Sender: TObject);
    procedure FormActivate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
    {移动两个列表框的函数}
    procedure MoveSelected(List: TCustomListBox; Items: TStrings);
    procedure SetItem(List: TListBox; Index: Integer);
    function GetFirstSelection(List: TCustomListBox): Integer;
    procedure SetButtons;
  end;

var
  frmQXGL_GNB: TfrmQXGL_GNB;

implementation

uses U_qxgl_zhsz, WzglDB;

{$R *.DFM}

procedure TfrmQXGL_GNB.IncludeBtnClick(Sender: TObject);
var
  Index: Integer;
begin
  Index := GetFirstSelection(SrcList);
  MoveSelected(SrcList, DstList.Items);
  SetItem(SrcList, Index);
end;

procedure TfrmQXGL_GNB.ExcludeBtnClick(Sender: TObject);
var
  Index: Integer;
begin
  Index := GetFirstSelection(DstList);
  MoveSelected(DstList, SrcList.Items);
  SetItem(DstList, Index);
end;

procedure TfrmQXGL_GNB.IncAllBtnClick(Sender: TObject);
var
  I: Integer;
begin
  for I := 0 to SrcList.Items.Count - 1 do
    DstList.Items.AddObject(SrcList.Items[I],
      SrcList.Items.Objects[I]);
  SrcList.Items.Clear;
  SetItem(SrcList, 0);
end;

procedure TfrmQXGL_GNB.ExcAllBtnClick(Sender: TObject);
var
  I: Integer;
begin
  for I := 0 to DstList.Items.Count - 1 do
    SrcList.Items.AddObject(DstList.Items[I], DstList.Items.Objects[I]);
  DstList.Items.Clear;
  SetItem(DstList, 0);
end;

procedure TfrmQXGL_GNB.MoveSelected(List: TCustomListBox; Items: TStrings);
var
  I: Integer;
begin
  for I := List.Items.Count - 1 downto 0 do
    if List.Selected[I] then
    begin
      Items.AddObject(List.Items[I], List.Items.Objects[I]);
      List.Items.Delete(I);
    end;
end;

procedure TfrmQXGL_GNB.SetButtons;
var
  SrcEmpty, DstEmpty: Boolean;
begin
  SrcEmpty := SrcList.Items.Count = 0;
  DstEmpty := DstList.Items.Count = 0;
  IncludeBtn.Enabled := not SrcEmpty;
  IncAllBtn.Enabled := not SrcEmpty;
  ExcludeBtn.Enabled := not DstEmpty;
  ExAllBtn.Enabled := not DstEmpty;
end;

function TfrmQXGL_GNB.GetFirstSelection(List: TCustomListBox): Integer;
begin
  for Result := 0 to List.Items.Count - 1 do
    if List.Selected[Result] then Exit;
  Result := LB_ERR;
end;

procedure TfrmQXGL_GNB.SetItem(List: TListBox; Index: Integer);
var
  MaxIndex: Integer;
begin
  with List do
  begin
    SetFocus;
    MaxIndex := List.Items.Count - 1;
    if Index = LB_ERR then Index := 0
    else if Index > MaxIndex then Index := MaxIndex;
    Selected[Index] := True;
  end;
  SetButtons;
end;

procedure TfrmQXGL_GNB.SrcListDblClick(Sender: TObject);
begin
  includebtn.Click;
end;

procedure TfrmQXGL_GNB.DstlistDblClick(Sender: TObject);
begin
  excludebtn.Click;
end;

//更新具体组号的权限
procedure TfrmQXGL_GNB.btnOKClick(Sender: TObject);
var
  i: integer;
begin
  with DM do
  begin
    CDS_QXGL_ZHNR.First;
    while not CDS_QXGL_ZHNR.Eof do
    begin
      CDS_QXGL_ZHNR.Delete;
    end;
    CDS_QXGL_ZHSZ.ApplyUpdates(0);
    for i := 0 to dstlist.items.count - 1 do
    begin
      CDS_QXGL_ZHNR.insert;
      CDS_QXGL_ZHNR.FieldByName('功能项').asstring := dstlist.Items.Strings[i];
      CDS_QXGL_ZHNR.post;
    end;
    CDS_QXGL_ZHSZ.applyupdates(0);
  end;
  close;
end;

procedure TfrmQXGL_GNB.btnCancelClick(Sender: TObject);
begin
  close;
end;

procedure TfrmQXGL_GNB.FormActivate(Sender: TObject);
begin
  if srclist.Items.Count > 0 then
  begin
    Includebtn.Enabled := true;
    IncAllbtn.Enabled := True;
  end;
  if Dstlist.Items.Count > 0 then
  begin
    ExcludeBtn.Enabled := true;
    ExAllbtn.Enabled := True;
  end;
end;

end.