| // Copyright 2014 The PDFium Authors |
| // 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 "fpdfsdk/pwl/cpwl_combo_box.h" |
| |
| #include <algorithm> |
| #include <utility> |
| |
| #include "constants/ascii.h" |
| #include "fpdfsdk/pwl/cpwl_cbbutton.h" |
| #include "fpdfsdk/pwl/cpwl_cblistbox.h" |
| #include "fpdfsdk/pwl/cpwl_edit.h" |
| #include "fpdfsdk/pwl/ipwl_fillernotify.h" |
| #include "public/fpdf_fwlevent.h" |
| |
| namespace { |
| |
| constexpr float kComboBoxDefaultFontSize = 12.0f; |
| constexpr int kDefaultButtonWidth = 13; |
| |
| } // namespace |
| |
| CPWL_ComboBox::CPWL_ComboBox( |
| const CreateParams& cp, |
| std::unique_ptr<IPWL_FillerNotify::PerWindowData> pAttachedData) |
| : CPWL_Wnd(cp, std::move(pAttachedData)) { |
| GetCreationParams()->dwFlags &= ~PWS_VSCROLL; |
| } |
| |
| CPWL_ComboBox::~CPWL_ComboBox() = default; |
| |
| void CPWL_ComboBox::OnDestroy() { |
| // Until cleanup takes place in the virtual destructor for CPWL_Wnd |
| // subclasses, implement the virtual OnDestroy method that does the |
| // cleanup first, then invokes the superclass OnDestroy ... gee, |
| // like a dtor would. |
| m_pList.ExtractAsDangling(); |
| m_pButton.ExtractAsDangling(); |
| m_pEdit.ExtractAsDangling(); |
| CPWL_Wnd::OnDestroy(); |
| } |
| |
| void CPWL_ComboBox::SetFocus() { |
| if (m_pEdit) |
| m_pEdit->SetFocus(); |
| } |
| |
| void CPWL_ComboBox::KillFocus() { |
| if (!SetPopup(false)) |
| return; |
| |
| CPWL_Wnd::KillFocus(); |
| } |
| |
| WideString CPWL_ComboBox::GetSelectedText() { |
| if (m_pEdit) |
| return m_pEdit->GetSelectedText(); |
| |
| return WideString(); |
| } |
| |
| void CPWL_ComboBox::ReplaceAndKeepSelection(const WideString& text) { |
| if (m_pEdit) |
| m_pEdit->ReplaceAndKeepSelection(text); |
| } |
| |
| void CPWL_ComboBox::ReplaceSelection(const WideString& text) { |
| if (m_pEdit) |
| m_pEdit->ReplaceSelection(text); |
| } |
| |
| bool CPWL_ComboBox::SelectAllText() { |
| return m_pEdit && m_pEdit->SelectAllText(); |
| } |
| |
| bool CPWL_ComboBox::CanUndo() { |
| return m_pEdit && m_pEdit->CanUndo(); |
| } |
| |
| bool CPWL_ComboBox::CanRedo() { |
| return m_pEdit && m_pEdit->CanRedo(); |
| } |
| |
| bool CPWL_ComboBox::Undo() { |
| return m_pEdit && m_pEdit->Undo(); |
| } |
| |
| bool CPWL_ComboBox::Redo() { |
| return m_pEdit && m_pEdit->Redo(); |
| } |
| |
| WideString CPWL_ComboBox::GetText() { |
| return m_pEdit ? m_pEdit->GetText() : WideString(); |
| } |
| |
| void CPWL_ComboBox::SetText(const WideString& text) { |
| if (m_pEdit) |
| m_pEdit->SetText(text); |
| } |
| |
| void CPWL_ComboBox::AddString(const WideString& str) { |
| if (m_pList) |
| m_pList->AddString(str); |
| } |
| |
| int32_t CPWL_ComboBox::GetSelect() const { |
| return m_nSelectItem; |
| } |
| |
| void CPWL_ComboBox::SetSelect(int32_t nItemIndex) { |
| if (m_pList) |
| m_pList->Select(nItemIndex); |
| |
| m_pEdit->SetText(m_pList->GetText()); |
| m_nSelectItem = nItemIndex; |
| } |
| |
| void CPWL_ComboBox::SetEditSelection(int32_t nStartChar, int32_t nEndChar) { |
| if (m_pEdit) |
| m_pEdit->SetSelection(nStartChar, nEndChar); |
| } |
| |
| void CPWL_ComboBox::ClearSelection() { |
| if (m_pEdit) |
| m_pEdit->ClearSelection(); |
| } |
| |
| void CPWL_ComboBox::CreateChildWnd(const CreateParams& cp) { |
| CreateEdit(cp); |
| CreateButton(cp); |
| CreateListBox(cp); |
| } |
| |
| void CPWL_ComboBox::CreateEdit(const CreateParams& cp) { |
| if (m_pEdit) |
| return; |
| |
| CreateParams ecp = cp; |
| ecp.dwFlags = |
| PWS_VISIBLE | PWS_BORDER | PES_CENTER | PES_AUTOSCROLL | PES_UNDO; |
| |
| if (HasFlag(PWS_AUTOFONTSIZE)) |
| ecp.dwFlags |= PWS_AUTOFONTSIZE; |
| |
| if (!HasFlag(PCBS_ALLOWCUSTOMTEXT)) |
| ecp.dwFlags |= PWS_READONLY; |
| |
| ecp.rcRectWnd = CFX_FloatRect(); |
| ecp.dwBorderWidth = 0; |
| ecp.nBorderStyle = BorderStyle::kSolid; |
| |
| auto pEdit = std::make_unique<CPWL_Edit>(ecp, CloneAttachedData()); |
| m_pEdit = pEdit.get(); |
| AddChild(std::move(pEdit)); |
| m_pEdit->Realize(); |
| } |
| |
| void CPWL_ComboBox::CreateButton(const CreateParams& cp) { |
| if (m_pButton) |
| return; |
| |
| CreateParams bcp = cp; |
| bcp.dwFlags = PWS_VISIBLE | PWS_BORDER | PWS_BACKGROUND; |
| bcp.sBackgroundColor = CFX_Color(CFX_Color::Type::kRGB, 220.0f / 255.0f, |
| 220.0f / 255.0f, 220.0f / 255.0f); |
| bcp.sBorderColor = kDefaultBlackColor; |
| bcp.dwBorderWidth = 2; |
| bcp.nBorderStyle = BorderStyle::kBeveled; |
| bcp.eCursorType = IPWL_FillerNotify::CursorStyle::kArrow; |
| |
| auto pButton = std::make_unique<CPWL_CBButton>(bcp, CloneAttachedData()); |
| m_pButton = pButton.get(); |
| AddChild(std::move(pButton)); |
| m_pButton->Realize(); |
| } |
| |
| void CPWL_ComboBox::CreateListBox(const CreateParams& cp) { |
| if (m_pList) |
| return; |
| |
| CreateParams lcp = cp; |
| lcp.dwFlags = PWS_BORDER | PWS_BACKGROUND | PLBS_HOVERSEL | PWS_VSCROLL; |
| lcp.nBorderStyle = BorderStyle::kSolid; |
| lcp.dwBorderWidth = 1; |
| lcp.eCursorType = IPWL_FillerNotify::CursorStyle::kArrow; |
| lcp.rcRectWnd = CFX_FloatRect(); |
| lcp.fFontSize = |
| (cp.dwFlags & PWS_AUTOFONTSIZE) ? kComboBoxDefaultFontSize : cp.fFontSize; |
| |
| if (cp.sBorderColor.nColorType == CFX_Color::Type::kTransparent) |
| lcp.sBorderColor = kDefaultBlackColor; |
| |
| if (cp.sBackgroundColor.nColorType == CFX_Color::Type::kTransparent) |
| lcp.sBackgroundColor = kDefaultWhiteColor; |
| |
| auto pList = std::make_unique<CPWL_CBListBox>(lcp, CloneAttachedData()); |
| m_pList = pList.get(); |
| AddChild(std::move(pList)); |
| m_pList->Realize(); |
| } |
| |
| bool CPWL_ComboBox::RepositionChildWnd() { |
| ObservedPtr<CPWL_ComboBox> this_observed(this); |
| const CFX_FloatRect rcClient = this_observed->GetClientRect(); |
| if (this_observed->m_bPopup) { |
| const float fOldWindowHeight = this_observed->m_rcOldWindow.Height(); |
| const float fOldClientHeight = fOldWindowHeight - GetBorderWidth() * 2; |
| CFX_FloatRect rcList = CPWL_Wnd::GetWindowRect(); |
| CFX_FloatRect rcButton = rcClient; |
| rcButton.left = |
| std::max(rcButton.right - kDefaultButtonWidth, rcClient.left); |
| CFX_FloatRect rcEdit = rcClient; |
| rcEdit.right = std::max(rcButton.left - 1.0f, rcEdit.left); |
| if (this_observed->m_bBottom) { |
| rcButton.bottom = rcButton.top - fOldClientHeight; |
| rcEdit.bottom = rcEdit.top - fOldClientHeight; |
| rcList.top -= fOldWindowHeight; |
| } else { |
| rcButton.top = rcButton.bottom + fOldClientHeight; |
| rcEdit.top = rcEdit.bottom + fOldClientHeight; |
| rcList.bottom += fOldWindowHeight; |
| } |
| if (this_observed->m_pButton) { |
| this_observed->m_pButton->Move(rcButton, true, false); |
| if (!this_observed) { |
| return false; |
| } |
| } |
| if (this_observed->m_pEdit) { |
| this_observed->m_pEdit->Move(rcEdit, true, false); |
| if (!this_observed) { |
| return false; |
| } |
| } |
| if (this_observed->m_pList) { |
| if (!this_observed->m_pList->SetVisible(true) || !this_observed) { |
| return false; |
| } |
| if (!this_observed->m_pList->Move(rcList, true, false) || |
| !this_observed) { |
| return false; |
| } |
| this_observed->m_pList->ScrollToListItem(this_observed->m_nSelectItem); |
| if (!this_observed) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| CFX_FloatRect rcButton = rcClient; |
| rcButton.left = std::max(rcButton.right - kDefaultButtonWidth, rcClient.left); |
| if (this_observed->m_pButton) { |
| this_observed->m_pButton->Move(rcButton, true, false); |
| if (!this_observed) { |
| return false; |
| } |
| } |
| |
| CFX_FloatRect rcEdit = rcClient; |
| rcEdit.right = std::max(rcButton.left - 1.0f, rcEdit.left); |
| if (this_observed->m_pEdit) { |
| this_observed->m_pEdit->Move(rcEdit, true, false); |
| if (!this_observed) { |
| return false; |
| } |
| } |
| if (this_observed->m_pList) { |
| if (!this_observed->m_pList->SetVisible(false)) { |
| this_observed->m_pList = nullptr; // Gone, dangling even. |
| return false; |
| } |
| if (!this_observed) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| void CPWL_ComboBox::SelectAll() { |
| if (m_pEdit && HasFlag(PCBS_ALLOWCUSTOMTEXT)) |
| m_pEdit->SelectAllText(); |
| } |
| |
| CFX_FloatRect CPWL_ComboBox::GetFocusRect() const { |
| return CFX_FloatRect(); |
| } |
| |
| bool CPWL_ComboBox::SetPopup(bool bPopup) { |
| ObservedPtr<CPWL_ComboBox> this_observed(this); |
| if (!this_observed->m_pList) { |
| return true; |
| } |
| if (bPopup == this_observed->m_bPopup) { |
| return true; |
| } |
| float fListHeight = this_observed->m_pList->GetContentRect().Height(); |
| if (!FXSYS_IsFloatBigger(fListHeight, 0.0f)) { |
| return true; |
| } |
| if (!bPopup) { |
| this_observed->m_bPopup = false; |
| return Move(this_observed->m_rcOldWindow, true, true); |
| } |
| if (GetFillerNotify()->OnPopupPreOpen(GetAttachedData(), {})) { |
| return !!this_observed; |
| } |
| if (!this_observed) { |
| return false; |
| } |
| float fBorderWidth = this_observed->m_pList->GetBorderWidth() * 2; |
| float fPopupMin = 0.0f; |
| if (this_observed->m_pList->GetCount() > 3) { |
| fPopupMin = this_observed->m_pList->GetFirstHeight() * 3 + fBorderWidth; |
| } |
| float fPopupMax = fListHeight + fBorderWidth; |
| bool bBottom; |
| float fPopupRet; |
| this_observed->GetFillerNotify()->QueryWherePopup( |
| this_observed->GetAttachedData(), fPopupMin, fPopupMax, &bBottom, |
| &fPopupRet); |
| if (!FXSYS_IsFloatBigger(fPopupRet, 0.0f)) { |
| return true; |
| } |
| this_observed->m_rcOldWindow = this_observed->CPWL_Wnd::GetWindowRect(); |
| this_observed->m_bPopup = bPopup; |
| this_observed->m_bBottom = bBottom; |
| |
| CFX_FloatRect rcWindow = this_observed->m_rcOldWindow; |
| if (bBottom) { |
| rcWindow.bottom -= fPopupRet; |
| } else { |
| rcWindow.top += fPopupRet; |
| } |
| if (!this_observed->Move(rcWindow, true, true)) { |
| return false; |
| } |
| this_observed->GetFillerNotify()->OnPopupPostOpen( |
| this_observed->GetAttachedData(), {}); |
| return !!this_observed; |
| } |
| |
| bool CPWL_ComboBox::OnKeyDown(FWL_VKEYCODE nKeyCode, |
| Mask<FWL_EVENTFLAG> nFlag) { |
| ObservedPtr<CPWL_ComboBox> this_observed(this); |
| if (!this_observed->m_pList) { |
| return false; |
| } |
| if (!this_observed->m_pEdit) { |
| return false; |
| } |
| this_observed->m_nSelectItem = -1; |
| |
| switch (nKeyCode) { |
| case FWL_VKEY_Up: |
| if (this_observed->m_pList->GetCurSel() > 0) { |
| if (this_observed->GetFillerNotify()->OnPopupPreOpen(GetAttachedData(), |
| nFlag) || |
| !this_observed) { |
| return false; |
| } |
| if (this_observed->GetFillerNotify()->OnPopupPostOpen(GetAttachedData(), |
| nFlag) || |
| !this_observed) { |
| return false; |
| } |
| if (this_observed->m_pList->IsMovementKey(nKeyCode)) { |
| if (this_observed->m_pList->OnMovementKeyDown(nKeyCode, nFlag) || |
| !this_observed) { |
| return false; |
| } |
| this_observed->SetSelectText(); |
| } |
| } |
| return true; |
| case FWL_VKEY_Down: |
| if (this_observed->m_pList->GetCurSel() < |
| this_observed->m_pList->GetCount() - 1) { |
| if (this_observed->GetFillerNotify()->OnPopupPreOpen(GetAttachedData(), |
| nFlag) || |
| !this_observed) { |
| return false; |
| } |
| if (this_observed->GetFillerNotify()->OnPopupPostOpen(GetAttachedData(), |
| nFlag) || |
| !this_observed) { |
| return false; |
| } |
| if (this_observed->m_pList->IsMovementKey(nKeyCode)) { |
| if (this_observed->m_pList->OnMovementKeyDown(nKeyCode, nFlag) || |
| !this_observed) { |
| return false; |
| } |
| this_observed->SetSelectText(); |
| } |
| } |
| return true; |
| default: |
| break; |
| } |
| if (this_observed->HasFlag(PCBS_ALLOWCUSTOMTEXT)) { |
| return this_observed->m_pEdit->OnKeyDown(nKeyCode, nFlag); |
| } |
| return false; |
| } |
| |
| bool CPWL_ComboBox::OnChar(uint16_t nChar, Mask<FWL_EVENTFLAG> nFlag) { |
| ObservedPtr<CPWL_ComboBox> this_observed(this); |
| if (!this_observed->m_pList) { |
| return false; |
| } |
| if (!this_observed->m_pEdit) { |
| return false; |
| } |
| // In a combo box if the ENTER/SPACE key is pressed, show the combo box |
| // options. |
| switch (nChar) { |
| case pdfium::ascii::kReturn: |
| if (!this_observed->SetPopup(!this_observed->IsPopup())) { |
| return false; |
| } |
| this_observed->SetSelectText(); |
| return true; |
| case pdfium::ascii::kSpace: |
| // Show the combo box options with space only if the combo box is not |
| // editable |
| if (!this_observed->HasFlag(PCBS_ALLOWCUSTOMTEXT)) { |
| if (!this_observed->IsPopup()) { |
| if (!this_observed->SetPopup(/*bPopUp=*/true)) { |
| return false; |
| } |
| this_observed->SetSelectText(); |
| } |
| return true; |
| } |
| break; |
| default: |
| break; |
| } |
| |
| this_observed->m_nSelectItem = -1; |
| if (this_observed->HasFlag(PCBS_ALLOWCUSTOMTEXT)) { |
| return this_observed->m_pEdit->OnChar(nChar, nFlag); |
| } |
| if (this_observed->GetFillerNotify()->OnPopupPreOpen(GetAttachedData(), |
| nFlag) || |
| !this_observed) { |
| return false; |
| } |
| if (this_observed->GetFillerNotify()->OnPopupPostOpen(GetAttachedData(), |
| nFlag) || |
| !this_observed) { |
| return false; |
| } |
| if (!this_observed->m_pList->IsChar(nChar, nFlag)) { |
| return false; |
| } |
| return this_observed->m_pList->OnCharNotify(nChar, nFlag); |
| } |
| |
| void CPWL_ComboBox::NotifyLButtonDown(CPWL_Wnd* child, const CFX_PointF& pos) { |
| if (child == m_pButton) { |
| (void)SetPopup(!m_bPopup); |
| // Note, |this| may no longer be viable at this point. If more work needs to |
| // be done, check the return value of SetPopup(). |
| } |
| } |
| |
| void CPWL_ComboBox::NotifyLButtonUp(CPWL_Wnd* child, const CFX_PointF& pos) { |
| if (!m_pEdit || !m_pList || child != m_pList) |
| return; |
| |
| SetSelectText(); |
| SelectAllText(); |
| m_pEdit->SetFocus(); |
| (void)SetPopup(false); |
| // Note, |this| may no longer be viable at this point. If more work needs to |
| // be done, check the return value of SetPopup(). |
| } |
| |
| bool CPWL_ComboBox::IsPopup() const { |
| return m_bPopup; |
| } |
| |
| void CPWL_ComboBox::SetSelectText() { |
| m_pEdit->SelectAllText(); |
| m_pEdit->ReplaceSelection(m_pList->GetText()); |
| m_pEdit->SelectAllText(); |
| m_nSelectItem = m_pList->GetCurSel(); |
| } |