unit uViewDocumentosAsociados;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, uViewBase, ComCtrls, ShlObj, cxShellCommon, Menus, cxControls, DB,
  cxContainer, cxShellListView, ExtCtrls, ActnList, StdCtrls,
  JvComponent, JvChangeNotify, uBizDocumentosAsociados, JvComponentBase;

type

  IViewDocumentosAsociados = interface(IViewBase)
  ['{38C44437-BAC5-4155-A737-4A448062653C}']
    function GetGestorDocumentos: TGestorDocumentos;
    procedure SetGestorDocumentos(const Value: TGestorDocumentos);
    property GestorDocumentos: TGestorDocumentos read GetGestorDocumentos write
            SetGestorDocumentos;
  end;

  TfrViewDocumentosAsociados = class(TfrViewBase, IViewDocumentosAsociados)
    Panel10: TPanel;
    Panel11: TPanel;
    explo: TcxShellListView;
    pnlBarraDocumentos: TPanel;
    OpenDialog1: TOpenDialog;
    ActionList1: TActionList;
    actAnadirDocumento: TAction;
    actElliminarDocumento: TAction;
    actAbrirDocumento: TAction;
    Button1: TButton;
    Button2: TButton;
    GridPopupMenu: TPopupMenu;
    Modificar1: TMenuItem;
    N1: TMenuItem;
    Nuevo1: TMenuItem;
    Previsualizar1: TMenuItem;
    JvChangeNotify1: TJvChangeNotify;
    procedure actAnadirDocumentoExecute(Sender: TObject);
    procedure actElliminarDocumentoExecute(Sender: TObject);
    procedure actAbrirDocumentoExecute(Sender: TObject);
    procedure actAbrirDocumentoUpdate(Sender: TObject);
    procedure actElliminarDocumentoUpdate(Sender: TObject);
    procedure JvChangeNotify1ChangeNotify(Sender: TObject; Dir: String;
      Actions: TJvChangeActions);
    procedure CustomViewDestroy(Sender: TObject);
    procedure exploDblClick(Sender: TObject);
  private
    FGestorDocumentos: TGestorDocumentos;
    function GetGestorDocumentos: TGestorDocumentos;
    procedure SetGestorDocumentos(const Value: TGestorDocumentos);

    procedure HabilitarDocumentos;
    procedure DeshabilitarDocumentos;

  public
    property GestorDocumentos: TGestorDocumentos read GetGestorDocumentos write SetGestorDocumentos;
  end;

var
  frViewDocumentosAsociados: TfrViewDocumentosAsociados;

implementation
{$R *.dfm}

uses ShellApi, uSysFunc;

procedure TfrViewDocumentosAsociados.actAnadirDocumentoExecute(Sender: TObject);
var
  FicheroOrigen : String;
  i : Integer;
begin
  if OpenDialog1.Execute then
  begin
    for i:=0 to OpenDialog1.Files.Count - 1 do
    begin
      FicheroOrigen := OpenDialog1.Files.Strings[i];
      if not (length(trim(FicheroOrigen))=0) then
         if not FGestorDocumentos.AnadirDocumento(FicheroOrigen) then
            raise Exception.Create('Error al añadir el documento');
    end;
  end;

  Explo.Root.CustomPath := Explo.Root.CustomPath;
end;

procedure TfrViewDocumentosAsociados.actElliminarDocumentoExecute(Sender: TObject);
var
  i : Integer;
  cadena: String;
begin
  if (Application.MessageBox('¿Desea eliminar los documentos seleccionados?', 'Atención', MB_YESNO) = IDYES) then
  begin
    for i:=0 to explo.InnerListView.Items.Count - 1 do
    begin
      if explo.InnerListView.Items[i].Selected then
      begin
         cadena := GetPidlName(explo.GetItemAbsolutePIDL(i));
         if not SysUtils.DeleteFile(cadena) then
            raise Exception.Create('Error al eliminar el documento');
      end;
    end;
  end;

  Explo.Root.CustomPath := Explo.Root.CustomPath;
end;

procedure TfrViewDocumentosAsociados.actAbrirDocumentoExecute(Sender: TObject);
var
  FileHandle : Integer;
  cadena : String;
begin
  if explo.InnerListView.SelCount <> 0 then
  begin
    cadena := GetPidlName(explo.GetItemAbsolutePIDL(explo.InnerListView.ItemFocused.Index));
    ShellExecute(Handle, 'open', PAnsiChar(cadena), nil, nil, SW_SHOWNORMAL);
  end;
end;

procedure TfrViewDocumentosAsociados.actAbrirDocumentoUpdate(Sender: TObject);
begin
  (Sender as TAction).Enabled := explo.InnerListView.SelCount <> 0;
end;

procedure TfrViewDocumentosAsociados.actElliminarDocumentoUpdate(Sender: TObject);
begin
  (Sender as TAction).Enabled := explo.InnerListView.SelCount <> 0;
end;

function TfrViewDocumentosAsociados.GetGestorDocumentos: TGestorDocumentos;
begin
  Result := FGestorDocumentos;
end;

procedure TfrViewDocumentosAsociados.SetGestorDocumentos(const Value: TGestorDocumentos);
begin
  FGestorDocumentos := Value;

  if Assigned(FGestorDocumentos) then
  begin
    DeshabilitarDocumentos;
    FGestorDocumentos.HabilitarDirectorio;
    HabilitarDocumentos;
  end;
end;

procedure TfrViewDocumentosAsociados.DeshabilitarDocumentos;
begin
  JvChangeNotify1.Active := False;
  JvChangeNotify1.Notifications.Clear;
  explo.Enabled := False;
  explo.Options.ShowNonFolders := False;
  explo.Root.CustomPath := FGestorDocumentos.RootDocumentos;
end;

procedure TfrViewDocumentosAsociados.HabilitarDocumentos;
begin
  explo.Options.ShowNonFolders := True;
  explo.Root.CustomPath := FGestorDocumentos.darRutaDocumentos;
  JvChangeNotify1.Notifications.Clear;
  with JvChangeNotify1.Notifications.Add do
  begin
    Actions := [caChangeFileName, caChangeDirName];
    Directory := explo.Root.CustomPath;
  end;
  JvChangeNotify1.Active := True;
  explo.Enabled := True;
end;

procedure TfrViewDocumentosAsociados.JvChangeNotify1ChangeNotify(
  Sender: TObject; Dir: String; Actions: TJvChangeActions);
begin
  Explo.Root.CustomPath := Explo.Root.CustomPath;
end;

procedure TfrViewDocumentosAsociados.CustomViewDestroy(Sender: TObject);
begin
  //Eliminaremos el directorio si no tiene documentos, solo tendremos direcctorios
  //en el caso que el presupuesto tenga documentos asociados
  RemoveDir(FGestorDocumentos.darRutaDocumentos);
  FGestorDocumentos := NIL;

  inherited;
end;

procedure TfrViewDocumentosAsociados.exploDblClick(Sender: TObject);
begin
  inherited;
  actAbrirDocumento.Execute;
end;

end.