// Copyright 2017 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#include "xfa/fxfa/cxfa_ffdatetimeedit.h"

#include <utility>

#include "xfa/fwl/cfwl_datetimepicker.h"
#include "xfa/fwl/cfwl_eventselectchanged.h"
#include "xfa/fwl/cfwl_notedriver.h"
#include "xfa/fwl/cfwl_widget.h"
#include "xfa/fxfa/cxfa_eventparam.h"
#include "xfa/fxfa/cxfa_ffdoc.h"
#include "xfa/fxfa/parser/cxfa_localevalue.h"
#include "xfa/fxfa/parser/cxfa_para.h"
#include "xfa/fxfa/parser/cxfa_value.h"
#include "xfa/fxfa/parser/xfa_utils.h"

CXFA_FFDateTimeEdit::CXFA_FFDateTimeEdit(CXFA_Node* pNode)
    : CXFA_FFTextEdit(pNode) {}

CXFA_FFDateTimeEdit::~CXFA_FFDateTimeEdit() {}

CFWL_DateTimePicker* CXFA_FFDateTimeEdit::GetPickerWidget() {
  return static_cast<CFWL_DateTimePicker*>(m_pNormalWidget.get());
}

CFX_RectF CXFA_FFDateTimeEdit::GetBBox(uint32_t dwStatus, bool bDrawFocus) {
  if (bDrawFocus)
    return CFX_RectF();
  return CXFA_FFWidget::GetBBox(dwStatus);
}

bool CXFA_FFDateTimeEdit::PtInActiveRect(const CFX_PointF& point) {
  CFWL_DateTimePicker* pPicker = GetPickerWidget();
  return pPicker && pPicker->GetBBox().Contains(point);
}

bool CXFA_FFDateTimeEdit::LoadWidget() {
  auto pNewPicker = pdfium::MakeUnique<CFWL_DateTimePicker>(GetFWLApp());
  CFWL_DateTimePicker* pWidget = pNewPicker.get();
  m_pNormalWidget = std::move(pNewPicker);
  m_pNormalWidget->SetLayoutItem(this);

  CFWL_NoteDriver* pNoteDriver =
      m_pNormalWidget->GetOwnerApp()->GetNoteDriver();
  pNoteDriver->RegisterEventTarget(m_pNormalWidget.get(),
                                   m_pNormalWidget.get());
  m_pOldDelegate = m_pNormalWidget->GetDelegate();
  m_pNormalWidget->SetDelegate(this);
  m_pNormalWidget->LockUpdate();

  WideString wsText = m_pNode->GetValue(XFA_VALUEPICTURE_Display);
  pWidget->SetEditText(wsText);

  CXFA_Value* value = m_pNode->GetFormValueIfExists();
  if (value) {
    switch (value->GetChildValueClassID()) {
      case XFA_Element::Date: {
        if (!wsText.IsEmpty()) {
          CXFA_LocaleValue lcValue = XFA_GetLocaleValue(m_pNode.Get());
          CFX_DateTime date = lcValue.GetDate();
          if (date.IsSet())
            pWidget->SetCurSel(date.GetYear(), date.GetMonth(), date.GetDay());
        }
      } break;
      default:
        break;
    }
  }
  UpdateWidgetProperty();
  m_pNormalWidget->UnlockUpdate();
  return CXFA_FFField::LoadWidget();
}

void CXFA_FFDateTimeEdit::UpdateWidgetProperty() {
  CFWL_DateTimePicker* pPicker = GetPickerWidget();
  if (!pPicker)
    return;

  uint32_t dwExtendedStyle = FWL_STYLEEXT_DTP_ShortDateFormat;
  dwExtendedStyle |= UpdateUIProperty();
  dwExtendedStyle |= GetAlignment();
  m_pNormalWidget->ModifyStylesEx(dwExtendedStyle, 0xFFFFFFFF);

  uint32_t dwEditStyles = 0;
  Optional<int32_t> numCells = m_pNode->GetNumberOfCells();
  if (numCells && *numCells > 0) {
    dwEditStyles |= FWL_STYLEEXT_EDT_CombText;
    pPicker->SetEditLimit(*numCells);
  }
  if (!m_pNode->IsOpenAccess() || !GetDoc()->GetXFADoc()->IsInteractive())
    dwEditStyles |= FWL_STYLEEXT_EDT_ReadOnly;
  if (!m_pNode->IsHorizontalScrollPolicyOff())
    dwEditStyles |= FWL_STYLEEXT_EDT_AutoHScroll;

  pPicker->ModifyEditStylesEx(dwEditStyles, 0xFFFFFFFF);
}

uint32_t CXFA_FFDateTimeEdit::GetAlignment() {
  CXFA_Para* para = m_pNode->GetParaIfExists();
  if (!para)
    return 0;

  uint32_t dwExtendedStyle = 0;
  switch (para->GetHorizontalAlign()) {
    case XFA_AttributeEnum::Center:
      dwExtendedStyle |= FWL_STYLEEXT_DTP_EditHCenter;
      break;
    case XFA_AttributeEnum::Justify:
      dwExtendedStyle |= FWL_STYLEEXT_DTP_EditJustified;
      break;
    case XFA_AttributeEnum::JustifyAll:
    case XFA_AttributeEnum::Radix:
      break;
    case XFA_AttributeEnum::Right:
      dwExtendedStyle |= FWL_STYLEEXT_DTP_EditHFar;
      break;
    default:
      dwExtendedStyle |= FWL_STYLEEXT_DTP_EditHNear;
      break;
  }

  switch (para->GetVerticalAlign()) {
    case XFA_AttributeEnum::Middle:
      dwExtendedStyle |= FWL_STYLEEXT_DTP_EditVCenter;
      break;
    case XFA_AttributeEnum::Bottom:
      dwExtendedStyle |= FWL_STYLEEXT_DTP_EditVFar;
      break;
    default:
      dwExtendedStyle |= FWL_STYLEEXT_DTP_EditVNear;
      break;
  }
  return dwExtendedStyle;
}

bool CXFA_FFDateTimeEdit::CommitData() {
  CFWL_DateTimePicker* pPicker = GetPickerWidget();
  if (!m_pNode->SetValue(XFA_VALUEPICTURE_Edit, pPicker->GetEditText()))
    return false;

  m_pNode->UpdateUIDisplay(GetDoc()->GetDocView(), this);
  return true;
}

bool CXFA_FFDateTimeEdit::UpdateFWLData() {
  if (!m_pNormalWidget)
    return false;

  XFA_VALUEPICTURE eType = XFA_VALUEPICTURE_Display;
  if (IsFocused())
    eType = XFA_VALUEPICTURE_Edit;

  WideString wsText = m_pNode->GetValue(eType);
  CFWL_DateTimePicker* pPicker = GetPickerWidget();
  pPicker->SetEditText(wsText);
  if (IsFocused() && !wsText.IsEmpty()) {
    CXFA_LocaleValue lcValue = XFA_GetLocaleValue(m_pNode.Get());
    CFX_DateTime date = lcValue.GetDate();
    if (lcValue.IsValid()) {
      if (date.IsSet())
        pPicker->SetCurSel(date.GetYear(), date.GetMonth(), date.GetDay());
    }
  }
  m_pNormalWidget->Update();
  return true;
}

bool CXFA_FFDateTimeEdit::IsDataChanged() {
  if (m_dwStatus & XFA_WidgetStatus_TextEditValueChanged)
    return true;

  WideString wsText = GetPickerWidget()->GetEditText();
  return m_pNode->GetValue(XFA_VALUEPICTURE_Edit) != wsText;
}

void CXFA_FFDateTimeEdit::OnSelectChanged(CFWL_Widget* pWidget,
                                          int32_t iYear,
                                          int32_t iMonth,
                                          int32_t iDay) {
  WideString wsPicture = m_pNode->GetPictureContent(XFA_VALUEPICTURE_Edit);

  CXFA_LocaleValue date(XFA_VT_DATE, GetDoc()->GetXFADoc()->GetLocalMgr());
  date.SetDate(CFX_DateTime(iYear, iMonth, iDay, 0, 0, 0, 0));

  WideString wsDate;
  date.FormatPatterns(wsDate, wsPicture, m_pNode->GetLocale(),
                      XFA_VALUEPICTURE_Edit);

  CFWL_DateTimePicker* pPicker = GetPickerWidget();
  pPicker->SetEditText(wsDate);
  pPicker->Update();
  GetDoc()->GetDocEnvironment()->SetFocusWidget(GetDoc(), nullptr);

  CXFA_EventParam eParam;
  eParam.m_eType = XFA_EVENT_Change;
  eParam.m_pTarget = m_pNode.Get();
  eParam.m_wsPrevText = m_pNode->GetValue(XFA_VALUEPICTURE_Raw);
  m_pNode->ProcessEvent(GetDocView(), XFA_AttributeEnum::Change, &eParam);
}

void CXFA_FFDateTimeEdit::OnProcessEvent(CFWL_Event* pEvent) {
  if (pEvent->GetType() == CFWL_Event::Type::SelectChanged) {
    auto* event = static_cast<CFWL_EventSelectChanged*>(pEvent);
    OnSelectChanged(m_pNormalWidget.get(), event->iYear, event->iMonth,
                    event->iDay);
    return;
  }
  CXFA_FFTextEdit::OnProcessEvent(pEvent);
}

bool CXFA_FFDateTimeEdit::CanUndo() {
  return GetPickerWidget()->CanUndo();
}

bool CXFA_FFDateTimeEdit::CanRedo() {
  return GetPickerWidget()->CanRedo();
}

bool CXFA_FFDateTimeEdit::Undo() {
  return GetPickerWidget()->Undo();
}

bool CXFA_FFDateTimeEdit::Redo() {
  return GetPickerWidget()->Redo();
}

bool CXFA_FFDateTimeEdit::CanCopy() {
  return GetPickerWidget()->HasSelection();
}

bool CXFA_FFDateTimeEdit::CanCut() {
  if (GetPickerWidget()->GetStylesEx() & FWL_STYLEEXT_EDT_ReadOnly)
    return false;
  return GetPickerWidget()->HasSelection();
}

bool CXFA_FFDateTimeEdit::CanPaste() {
  return !(GetPickerWidget()->GetStylesEx() & FWL_STYLEEXT_EDT_ReadOnly);
}

bool CXFA_FFDateTimeEdit::CanSelectAll() {
  return GetPickerWidget()->GetEditTextLength() > 0;
}

Optional<WideString> CXFA_FFDateTimeEdit::Copy() {
  return GetPickerWidget()->Copy();
}

Optional<WideString> CXFA_FFDateTimeEdit::Cut() {
  return GetPickerWidget()->Cut();
}

bool CXFA_FFDateTimeEdit::Paste(const WideString& wsPaste) {
  return GetPickerWidget()->Paste(wsPaste);
}

void CXFA_FFDateTimeEdit::SelectAll() {
  GetPickerWidget()->SelectAll();
}

void CXFA_FFDateTimeEdit::Delete() {
  GetPickerWidget()->ClearText();
}

void CXFA_FFDateTimeEdit::DeSelect() {
  GetPickerWidget()->ClearSelection();
}

WideString CXFA_FFDateTimeEdit::GetText() {
  return GetPickerWidget()->GetEditText();
}