| // 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_fflistbox.h" |
| |
| #include <algorithm> |
| #include <utility> |
| #include <vector> |
| |
| #include "third_party/base/check.h" |
| #include "third_party/base/stl_util.h" |
| #include "v8/include/cppgc/visitor.h" |
| #include "xfa/fwl/cfwl_listbox.h" |
| #include "xfa/fwl/cfwl_notedriver.h" |
| #include "xfa/fwl/cfwl_widget.h" |
| #include "xfa/fxfa/cxfa_eventparam.h" |
| #include "xfa/fxfa/parser/cxfa_para.h" |
| |
| namespace { |
| |
| CFWL_ListBox* ToListBox(CFWL_Widget* widget) { |
| return static_cast<CFWL_ListBox*>(widget); |
| } |
| |
| } // namespace |
| |
| CXFA_FFListBox::CXFA_FFListBox(CXFA_Node* pNode) : CXFA_FFDropDown(pNode) {} |
| |
| CXFA_FFListBox::~CXFA_FFListBox() = default; |
| |
| void CXFA_FFListBox::PreFinalize() { |
| if (GetNormalWidget()) { |
| CFWL_NoteDriver* pNoteDriver = |
| GetNormalWidget()->GetFWLApp()->GetNoteDriver(); |
| pNoteDriver->UnregisterEventTarget(GetNormalWidget()); |
| } |
| CXFA_FFDropDown::PreFinalize(); |
| } |
| |
| void CXFA_FFListBox::Trace(cppgc::Visitor* visitor) const { |
| CXFA_FFDropDown::Trace(visitor); |
| visitor->Trace(m_pOldDelegate); |
| } |
| |
| bool CXFA_FFListBox::LoadWidget() { |
| DCHECK(!IsLoaded()); |
| |
| CFWL_ListBox* pListBox = cppgc::MakeGarbageCollected<CFWL_ListBox>( |
| GetFWLApp()->GetHeap()->GetAllocationHandle(), GetFWLApp(), |
| CFWL_Widget::Properties(), nullptr); |
| pListBox->ModifyStyles(FWL_WGTSTYLE_VScroll | FWL_WGTSTYLE_NoBackground, |
| 0xFFFFFFFF); |
| SetNormalWidget(pListBox); |
| pListBox->SetAdapterIface(this); |
| |
| CFWL_NoteDriver* pNoteDriver = pListBox->GetFWLApp()->GetNoteDriver(); |
| pNoteDriver->RegisterEventTarget(pListBox, pListBox); |
| m_pOldDelegate = pListBox->GetDelegate(); |
| pListBox->SetDelegate(this); |
| |
| { |
| CFWL_Widget::ScopedUpdateLock update_lock(pListBox); |
| std::vector<WideString> displayables = m_pNode->GetChoiceListItems(false); |
| std::vector<WideString> settables = m_pNode->GetChoiceListItems(true); |
| if (displayables.size() > settables.size()) |
| displayables.resize(settables.size()); |
| |
| for (const auto& label : displayables) |
| pListBox->AddString(label); |
| |
| uint32_t dwExtendedStyle = FWL_STYLEEXT_LTB_ShowScrollBarFocus; |
| if (m_pNode->IsChoiceListMultiSelect()) |
| dwExtendedStyle |= FWL_STYLEEXT_LTB_MultiSelection; |
| |
| dwExtendedStyle |= GetAlignment(); |
| pListBox->ModifyStylesEx(dwExtendedStyle, 0xFFFFFFFF); |
| for (int32_t selected : m_pNode->GetSelectedItems()) |
| pListBox->SetSelItem(pListBox->GetItem(nullptr, selected), true); |
| } |
| |
| return CXFA_FFField::LoadWidget(); |
| } |
| |
| bool CXFA_FFListBox::OnKillFocus(CXFA_FFWidget* pNewFocus) { |
| if (!ProcessCommittedData()) |
| UpdateFWLData(); |
| |
| return pNewFocus && CXFA_FFField::OnKillFocus(pNewFocus); |
| } |
| |
| bool CXFA_FFListBox::CommitData() { |
| auto* pListBox = ToListBox(GetNormalWidget()); |
| std::vector<int32_t> iSelArray; |
| int32_t iSels = pListBox->CountSelItems(); |
| for (int32_t i = 0; i < iSels; ++i) |
| iSelArray.push_back(pListBox->GetSelIndex(i)); |
| |
| m_pNode->SetSelectedItems(iSelArray, true, false, true); |
| return true; |
| } |
| |
| bool CXFA_FFListBox::IsDataChanged() { |
| std::vector<int32_t> iSelArray = m_pNode->GetSelectedItems(); |
| int32_t iOldSels = pdfium::CollectionSize<int32_t>(iSelArray); |
| auto* pListBox = ToListBox(GetNormalWidget()); |
| int32_t iSels = pListBox->CountSelItems(); |
| if (iOldSels != iSels) |
| return true; |
| |
| for (int32_t i = 0; i < iSels; ++i) { |
| CFWL_ListBox::Item* hlistItem = pListBox->GetItem(nullptr, iSelArray[i]); |
| if (!(hlistItem->GetStates() & FWL_ITEMSTATE_LTB_Selected)) |
| return true; |
| } |
| return false; |
| } |
| |
| uint32_t CXFA_FFListBox::GetAlignment() { |
| CXFA_Para* para = m_pNode->GetParaIfExists(); |
| if (!para) |
| return 0; |
| |
| uint32_t dwExtendedStyle = 0; |
| switch (para->GetHorizontalAlign()) { |
| case XFA_AttributeValue::Center: |
| dwExtendedStyle |= FWL_STYLEEXT_LTB_CenterAlign; |
| break; |
| case XFA_AttributeValue::Justify: |
| break; |
| case XFA_AttributeValue::JustifyAll: |
| break; |
| case XFA_AttributeValue::Radix: |
| break; |
| case XFA_AttributeValue::Right: |
| dwExtendedStyle |= FWL_STYLEEXT_LTB_RightAlign; |
| break; |
| default: |
| dwExtendedStyle |= FWL_STYLEEXT_LTB_LeftAlign; |
| break; |
| } |
| return dwExtendedStyle; |
| } |
| |
| bool CXFA_FFListBox::UpdateFWLData() { |
| auto* pListBox = ToListBox(GetNormalWidget()); |
| if (!pListBox) |
| return false; |
| |
| std::vector<int32_t> iSelArray = m_pNode->GetSelectedItems(); |
| std::vector<CFWL_ListBox::Item*> selItemArray(iSelArray.size()); |
| std::transform(iSelArray.begin(), iSelArray.end(), selItemArray.begin(), |
| [pListBox](int32_t val) { return pListBox->GetSelItem(val); }); |
| |
| pListBox->SetSelItem(pListBox->GetSelItem(-1), false); |
| for (CFWL_ListBox::Item* pItem : selItemArray) |
| pListBox->SetSelItem(pItem, true); |
| |
| GetNormalWidget()->Update(); |
| return true; |
| } |
| |
| void CXFA_FFListBox::OnSelectChanged(CFWL_Widget* pWidget) { |
| 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_AttributeValue::Change, &eParam); |
| } |
| |
| void CXFA_FFListBox::SetItemState(int32_t nIndex, bool bSelected) { |
| auto* pListBox = ToListBox(GetNormalWidget()); |
| pListBox->SetSelItem(pListBox->GetSelItem(nIndex), bSelected); |
| GetNormalWidget()->Update(); |
| InvalidateRect(); |
| } |
| |
| void CXFA_FFListBox::InsertItem(const WideString& wsLabel, int32_t nIndex) { |
| ToListBox(GetNormalWidget())->AddString(wsLabel); |
| GetNormalWidget()->Update(); |
| InvalidateRect(); |
| } |
| |
| void CXFA_FFListBox::DeleteItem(int32_t nIndex) { |
| auto* pListBox = ToListBox(GetNormalWidget()); |
| if (nIndex < 0) |
| pListBox->DeleteAll(); |
| else |
| pListBox->DeleteString(pListBox->GetItem(nullptr, nIndex)); |
| |
| pListBox->Update(); |
| InvalidateRect(); |
| } |
| |
| void CXFA_FFListBox::OnProcessMessage(CFWL_Message* pMessage) { |
| m_pOldDelegate->OnProcessMessage(pMessage); |
| } |
| |
| void CXFA_FFListBox::OnProcessEvent(CFWL_Event* pEvent) { |
| CXFA_FFField::OnProcessEvent(pEvent); |
| switch (pEvent->GetType()) { |
| case CFWL_Event::Type::SelectChanged: |
| OnSelectChanged(GetNormalWidget()); |
| break; |
| default: |
| break; |
| } |
| m_pOldDelegate->OnProcessEvent(pEvent); |
| } |
| |
| void CXFA_FFListBox::OnDrawWidget(CFGAS_GEGraphics* pGraphics, |
| const CFX_Matrix& matrix) { |
| m_pOldDelegate->OnDrawWidget(pGraphics, matrix); |
| } |
| |
| FormFieldType CXFA_FFListBox::GetFormFieldType() { |
| return FormFieldType::kXFA_ListBox; |
| } |