unit uViewDocumentosAsociados;

interface

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

type

  IViewDocumentosAsociados = interface(IViewBase)
  ['{3FB01C62-1D0C-446E-B5DE-9A10F7B14F20}']
    function GetGestorDocumentos: TGestorDocumentos;
    procedure SetGestorDocumentos(const Value: TGestorDocumentos);
    property GestorDocumentos: TGestorDocumentos read GetGestorDocumentos write SetGestorDocumentos;

    procedure DeshabilitarDocumentos;
    
  end;

  TfrViewDocumentosAsociados = class(TfrViewBase, IViewDocumentosAsociados)
    Panel10: TPanel;
    Panel11: TPanel;
    explo: TcxShellListView;
    OpenDialog1: TOpenDialog;
    ActionList1: TActionList;
    actAnadirDocumento: TAction;
    actEliminarDocumento: TAction;
    actAbrirDocumento: TAction;
    GridPopupMenu: TPopupMenu;
    Modificar1: TMenuItem;
    N1: TMenuItem;
    Nuevo1: TMenuItem;
    Previsualizar1: TMenuItem;
    ToolBar1: TToolBar;
    ToolButton1: TToolButton;
    ToolButton2: TToolButton;
    ToolButton3: TToolButton;
    ToolButton5: TToolButton;
    Splitter1: TSplitter;
    actAnadirDir: TAction;
    actEliminarDir: TAction;
    PopupMenuDir: TPopupMenu;
    MenuItem1: TMenuItem;
    MenuItem3: TMenuItem;
    dxLayoutControl1Group_Root: TdxLayoutGroup;
    dxLayoutControl1: TdxLayoutControl;
    dxLayoutControl1Item1: TdxLayoutItem;
    dxLayoutControl1Item2: TdxLayoutItem;
    edtlDirectorio: TcxTextEdit;
    dxLayoutControl1Group1: TdxLayoutGroup;
    Button1: TButton;
    dxLayoutControl1Item3: TdxLayoutItem;
    dxLayoutControl1Group2: TdxLayoutGroup;
    actCopiarDocumento: TAction;
    Copiar1: TMenuItem;
    ToolButton4: TToolButton;

    procedure actAnadirDocumentoExecute(Sender: TObject);
    procedure actAnadirDocumentoUpdate(Sender: TObject);
    procedure actEliminarDocumentoExecute(Sender: TObject);
    procedure actEliminarDocumentoUpdate(Sender: TObject);
    procedure actAbrirDocumentoExecute(Sender: TObject);
    procedure actAbrirDocumentoUpdate(Sender: TObject);
    procedure actCopiarDocumentoExecute(Sender: TObject);
    procedure actCopiarDocumentoUpdate(Sender: TObject);

    procedure CustomViewShow(Sender: TObject);
    procedure exploDblClick(Sender: TObject);
    procedure OnEliminarDirDocumentos(Sender : TObject);
    procedure OnBeforeDirectorioChanged(Sender : TObject);
    procedure OnAfterDirectorioChanged(Sender : TObject);
    procedure Button1Click(Sender: TObject);
    procedure CustomViewHide(Sender: TObject);
    procedure CustomViewDestroy(Sender: TObject);

  private
    FGestorDocumentos: TGestorDocumentos;
    function GetGestorDocumentos: TGestorDocumentos;
    procedure SetGestorDocumentos(const Value: TGestorDocumentos);

  public
    property GestorDocumentos: TGestorDocumentos read GetGestorDocumentos write SetGestorDocumentos;
    procedure HabilitarDocumentos;
    procedure DeshabilitarDocumentos;
    procedure refrescarTree;
    
  end;

var
  frViewDocumentosAsociados: TfrViewDocumentosAsociados;

implementation
{$R *.dfm}

uses ShellApi, JclShell, uEditorNombreDirectorio, uCustomView;

procedure TfrViewDocumentosAsociados.actAnadirDocumentoExecute(Sender: TObject);
var
  ACursor: TCursor;
  FicheroOrigen : String;
  i : Integer;
begin
  if OpenDialog1.Execute then
  begin
    try
      ACursor := Screen.Cursor;
      Screen.Cursor := crHourGlass;
      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, Explo.Path) then
              raise Exception.Create('Error al añadir el documento');
      end;
    finally
      Screen.Cursor := ACursor;
    end;
  end;

  refrescarTree;
end;

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

  refrescarTree;
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.actEliminarDocumentoUpdate(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
  if Assigned(FGestorDocumentos) then
     Explo.Root.CustomPath := FGestorDocumentos.RootDocumentos;
  Explo.Enabled := False;
end;

procedure TfrViewDocumentosAsociados.HabilitarDocumentos;
begin
  Explo.Root.CustomPath := FGestorDocumentos.darRutaDocumentos;
  Explo.Enabled := True;
end;

procedure TfrViewDocumentosAsociados.CustomViewDestroy(Sender: TObject);
begin
  inherited;
  // Utilizar mejor OnHide
end;

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

  FGestorDocumentos.OnEliminarDirDocumentos := Nil;
  FGestorDocumentos.OnBeforeDirectorioChanged := Nil;
  FGestorDocumentos.OnAfterDirectorioChanged := Nil;
  FGestorDocumentos.Directorio := Null;
  FGestorDocumentos := NIL;
end;

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

procedure TfrViewDocumentosAsociados.CustomViewShow(Sender: TObject);
begin
  inherited;

  edtlDirectorio.Text := GestorDocumentos.darRutaDocumentos;
  FGestorDocumentos.OnEliminarDirDocumentos := OnEliminarDirDocumentos;
  FGestorDocumentos.OnBeforeDirectorioChanged := OnBeforeDirectorioChanged;
  FGestorDocumentos.OnAfterDirectorioChanged := OnAfterDirectorioChanged;
  refrescarTree;
end;

procedure TfrViewDocumentosAsociados.actAnadirDocumentoUpdate(Sender: TObject);
begin
//  (Sender as TAction).Enabled := (TreeExplo.Root.CustomPath <> TreeExplo.Path);
end;

procedure TfrViewDocumentosAsociados.refrescarTree;
var
  Cadena : String;
begin
  //Cuando hacemos algo con documentos es necesario consultar esta propiedad
  Cadena := Explo.Path;
  if (Length(Cadena) = 0) then
     Cadena := Explo.Root.CustomPath;

  Explo.Root.CustomPath := Cadena;
end;

procedure TfrViewDocumentosAsociados.OnAfterDirectorioChanged(Sender: TObject);
begin
  if (csDestroying in ComponentState) then
    Exit;

  HabilitarDocumentos;
  edtlDirectorio.Text := GestorDocumentos.darRutaDocumentos;
end;

procedure TfrViewDocumentosAsociados.OnBeforeDirectorioChanged(Sender: TObject);
begin
  if (csDestroying in ComponentState) then
    Exit;

  DeshabilitarDocumentos;
end;

procedure TfrViewDocumentosAsociados.OnEliminarDirDocumentos(Sender: TObject);
begin
  if (csDestroying in ComponentState) then
    Exit;

  DeshabilitarDocumentos;
end;

procedure TfrViewDocumentosAsociados.Button1Click(Sender: TObject);
begin
  inherited;
  OpenFolder(edtlDirectorio.Text);
end;

procedure TfrViewDocumentosAsociados.actCopiarDocumentoExecute(Sender: TObject);
var
  ACursor: TCursor;
  i,a : Integer;
  CadenaAux : String;

begin
  try
    ACursor := Screen.Cursor;
    Screen.Cursor := crHourGlass;
    for i:=0 to explo.InnerListView.Items.Count - 1 do
    begin
      if explo.InnerListView.Items[i].Selected then
      begin
         CadenaAux := ExtractFilePath(GetPIDLDisplayName(explo.GetItemAbsolutePIDL(i), True));
         CadenaAux := CadenaAux + 'Copia de ' + ExtractFileName(GetPIDLDisplayName(explo.GetItemAbsolutePIDL(i), True));
         if not CopyFile(PChar(GetPIDLDisplayName(explo.GetItemAbsolutePIDL(i), True)), pChar(CadenaAux), False) then
            raise Exception.Create('Error al copiar el documento');
      end;
    end;
  finally
    Screen.Cursor := ACursor;
  end;

  refrescarTree;
end;

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

end.