explorerfrm.pas

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unit ExplorerFrm;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ComCtrls, ExtCtrls, Buttons, Un_TreeMenu, Un_Actions;

type
  TExplorer = class(TForm)
    Panel1: TPanel;
    Panel2: TPanel;
    Splitter1: TSplitter;
    ScrollBox1: TScrollBox;
    ScrollBox2: TScrollBox;
    TreeView1: TTreeView;
    ListView1: TListView;
    Panel3: TPanel;
    SpeedButton1: TSpeedButton;
    SpeedButton2: TSpeedButton;
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure TreeView1Change(Sender: TObject; Node: TTreeNode);
    procedure ListView1DblClick(Sender: TObject);
    procedure ListView1KeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
  private
    { Private declarations }
    FMyTreeMenu: TMyTreeMenu;
    FActionPermission: TActionPermission;
    procedure Execute;
    procedure DoRun(Data: TNodeData);
  public
    { Public declarations }
    class function Instance: TExplorer;
  end;

implementation
uses
  Un_Functions, Un_System, Publics;
  
{$R *.dfm}

var
  AExplorer: TExplorer;
class function TExplorer.Instance: TExplorer;
begin
  if AExplorer=nil then begin
    AExplorer:=TExplorer.Create(Application);
    AExplorer.Left:=0;
    AExplorer.Top:=0;
    AExplorer.WindowState:=wsMaximized;
  end;
  Result:= AExplorer;
end;

procedure TExplorer.FormCreate(Sender: TObject);
begin
  FMyTreeMenu:= TMyTreeMenu.Create(TreeView1);
  FMyTreeMenu.MakeTree(TAppSystemInfo.Instance.UId);
  FActionPermission:= TActionPermission.Create;
  ActionPermission:= FActionPermission;
end;

procedure TExplorer.FormDestroy(Sender: TObject);
begin
  FMyTreeMenu.FreeTree;
  FMyTreeMenu.Free;
  ActionPermission:= nil;
  //FActionPermission.Free;
end;

procedure TExplorer.TreeView1Change(Sender: TObject; Node: TTreeNode);
begin
  FMyTreeMenu.ShowCurrentNodeChilds(ListView1);
end;

procedure TExplorer.ListView1DblClick(Sender: TObject);
begin
  Execute;
end;

procedure TExplorer.Execute;
var
  NodeData: TNodeData;
  Node: TTreeNode;
begin
  if ListView1.SelCount<>1 then Exit;
  NodeData:= TNodeData(ListView1.Selected.Data);
  if NodeData.IsFunction then begin
    DoRun(NodeData);
  end
  else begin
    Node:= NodeData.ThisNode;
    Node.Expand(False);
    FMyTreeMenu.Selected:= Node;
  end;
end;

procedure TExplorer.DoRun(Data: TNodeData);
begin
  FActionPermission.LoadActions(TAppSystemInfo.Instance.IsSA,
                                TAppSystemInfo.Instance.UId,
                                Data.Id);
  TSytemFunction.Run(Data.FunctionStr)
end;

procedure TExplorer.ListView1KeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
  if Key=VK_Return then
    Execute;
end;

end.