| // Copyright 2014 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/fwl/cfwl_combobox.h" |
| |
| #include "v8/include/cppgc/visitor.h" |
| #include "xfa/fde/cfde_texteditengine.h" |
| #include "xfa/fde/cfde_textout.h" |
| #include "xfa/fwl/cfwl_app.h" |
| #include "xfa/fwl/cfwl_event.h" |
| #include "xfa/fwl/cfwl_eventselectchanged.h" |
| #include "xfa/fwl/cfwl_listbox.h" |
| #include "xfa/fwl/cfwl_messagekey.h" |
| #include "xfa/fwl/cfwl_messagekillfocus.h" |
| #include "xfa/fwl/cfwl_messagemouse.h" |
| #include "xfa/fwl/cfwl_messagesetfocus.h" |
| #include "xfa/fwl/cfwl_notedriver.h" |
| #include "xfa/fwl/cfwl_themebackground.h" |
| #include "xfa/fwl/cfwl_themepart.h" |
| #include "xfa/fwl/cfwl_themetext.h" |
| #include "xfa/fwl/cfwl_widgetmgr.h" |
| #include "xfa/fwl/fwl_widgetdef.h" |
| #include "xfa/fwl/ifwl_themeprovider.h" |
| |
| CFWL_ComboBox::CFWL_ComboBox(CFWL_App* app) |
| : CFWL_Widget(app, Properties(), nullptr), |
| m_pEdit(cppgc::MakeGarbageCollected<CFWL_ComboEdit>( |
| app->GetHeap()->GetAllocationHandle(), |
| app, |
| Properties(), |
| this)), |
| m_pListBox(cppgc::MakeGarbageCollected<CFWL_ComboList>( |
| app->GetHeap()->GetAllocationHandle(), |
| app, |
| Properties{FWL_WGTSTYLE_Border | FWL_WGTSTYLE_VScroll, 0, |
| FWL_WGTSTATE_Invisible}, |
| this)) {} |
| |
| CFWL_ComboBox::~CFWL_ComboBox() = default; |
| |
| void CFWL_ComboBox::Trace(cppgc::Visitor* visitor) const { |
| CFWL_Widget::Trace(visitor); |
| visitor->Trace(m_pEdit); |
| visitor->Trace(m_pListBox); |
| } |
| |
| FWL_Type CFWL_ComboBox::GetClassID() const { |
| return FWL_Type::ComboBox; |
| } |
| |
| void CFWL_ComboBox::AddString(const WideString& wsText) { |
| m_pListBox->AddString(wsText); |
| } |
| |
| void CFWL_ComboBox::RemoveAt(int32_t iIndex) { |
| m_pListBox->RemoveAt(iIndex); |
| } |
| |
| void CFWL_ComboBox::RemoveAll() { |
| m_pListBox->DeleteAll(); |
| } |
| |
| void CFWL_ComboBox::ModifyStylesEx(uint32_t dwStylesExAdded, |
| uint32_t dwStylesExRemoved) { |
| bool bAddDropDown = !!(dwStylesExAdded & FWL_STYLEEXT_CMB_DropDown); |
| bool bDelDropDown = !!(dwStylesExRemoved & FWL_STYLEEXT_CMB_DropDown); |
| dwStylesExRemoved &= ~FWL_STYLEEXT_CMB_DropDown; |
| m_Properties.m_dwStyleExes |= FWL_STYLEEXT_CMB_DropDown; |
| if (bAddDropDown) |
| m_pEdit->ModifyStylesEx(0, FWL_STYLEEXT_EDT_ReadOnly); |
| else if (bDelDropDown) |
| m_pEdit->ModifyStylesEx(FWL_STYLEEXT_EDT_ReadOnly, 0); |
| |
| CFWL_Widget::ModifyStylesEx(dwStylesExAdded, dwStylesExRemoved); |
| } |
| |
| void CFWL_ComboBox::Update() { |
| if (IsLocked()) |
| return; |
| |
| if (m_pEdit) |
| ResetEditAlignment(); |
| Layout(); |
| } |
| |
| FWL_WidgetHit CFWL_ComboBox::HitTest(const CFX_PointF& point) { |
| CFX_RectF rect(0, 0, m_WidgetRect.width - m_BtnRect.width, |
| m_WidgetRect.height); |
| if (rect.Contains(point)) |
| return FWL_WidgetHit::Edit; |
| if (m_BtnRect.Contains(point)) |
| return FWL_WidgetHit::Client; |
| if (IsDropListVisible()) { |
| rect = m_pListBox->GetWidgetRect(); |
| if (rect.Contains(point)) |
| return FWL_WidgetHit::Client; |
| } |
| return FWL_WidgetHit::Unknown; |
| } |
| |
| void CFWL_ComboBox::DrawWidget(CFGAS_GEGraphics* pGraphics, |
| const CFX_Matrix& matrix) { |
| pGraphics->SaveGraphState(); |
| pGraphics->ConcatMatrix(&matrix); |
| if (!m_BtnRect.IsEmpty(0.1f)) { |
| CFWL_ThemeBackground param; |
| param.m_pWidget = this; |
| param.m_iPart = CFWL_Part::DropDownButton; |
| param.m_dwStates = m_iBtnState; |
| param.m_pGraphics = pGraphics; |
| param.m_PartRect = m_BtnRect; |
| GetThemeProvider()->DrawBackground(param); |
| } |
| pGraphics->RestoreGraphState(); |
| |
| if (m_pEdit) { |
| CFX_RectF rtEdit = m_pEdit->GetWidgetRect(); |
| CFX_Matrix mt(1, 0, 0, 1, rtEdit.left, rtEdit.top); |
| mt.Concat(matrix); |
| m_pEdit->DrawWidget(pGraphics, mt); |
| } |
| if (m_pListBox && IsDropListVisible()) { |
| CFX_RectF rtList = m_pListBox->GetWidgetRect(); |
| CFX_Matrix mt(1, 0, 0, 1, rtList.left, rtList.top); |
| mt.Concat(matrix); |
| m_pListBox->DrawWidget(pGraphics, mt); |
| } |
| } |
| |
| WideString CFWL_ComboBox::GetTextByIndex(int32_t iIndex) const { |
| CFWL_ListBox::Item* pItem = m_pListBox->GetItem(m_pListBox, iIndex); |
| return pItem ? pItem->GetText() : WideString(); |
| } |
| |
| void CFWL_ComboBox::SetCurSel(int32_t iSel) { |
| int32_t iCount = m_pListBox->CountItems(nullptr); |
| bool bClearSel = iSel < 0 || iSel >= iCount; |
| if (IsDropDownStyle() && m_pEdit) { |
| if (bClearSel) { |
| m_pEdit->SetText(WideString()); |
| } else { |
| CFWL_ListBox::Item* hItem = m_pListBox->GetItem(this, iSel); |
| m_pEdit->SetText(hItem ? hItem->GetText() : WideString()); |
| } |
| m_pEdit->Update(); |
| } |
| m_iCurSel = bClearSel ? -1 : iSel; |
| } |
| |
| void CFWL_ComboBox::SetStates(uint32_t dwStates) { |
| if (IsDropDownStyle() && m_pEdit) |
| m_pEdit->SetStates(dwStates); |
| if (m_pListBox) |
| m_pListBox->SetStates(dwStates); |
| CFWL_Widget::SetStates(dwStates); |
| } |
| |
| void CFWL_ComboBox::RemoveStates(uint32_t dwStates) { |
| if (IsDropDownStyle() && m_pEdit) |
| m_pEdit->RemoveStates(dwStates); |
| if (m_pListBox) |
| m_pListBox->RemoveStates(dwStates); |
| CFWL_Widget::RemoveStates(dwStates); |
| } |
| |
| void CFWL_ComboBox::SetEditText(const WideString& wsText) { |
| if (!m_pEdit) |
| return; |
| |
| m_pEdit->SetText(wsText); |
| m_pEdit->Update(); |
| } |
| |
| WideString CFWL_ComboBox::GetEditText() const { |
| if (m_pEdit) |
| return m_pEdit->GetText(); |
| if (!m_pListBox) |
| return WideString(); |
| |
| CFWL_ListBox::Item* hItem = m_pListBox->GetItem(this, m_iCurSel); |
| return hItem ? hItem->GetText() : WideString(); |
| } |
| |
| void CFWL_ComboBox::OpenDropDownList(bool bActivate) { |
| ShowDropList(bActivate); |
| } |
| |
| CFX_RectF CFWL_ComboBox::GetBBox() const { |
| CFX_RectF rect = m_WidgetRect; |
| if (!m_pListBox || !IsDropListVisible()) |
| return rect; |
| |
| CFX_RectF rtList = m_pListBox->GetWidgetRect(); |
| rtList.Offset(rect.left, rect.top); |
| rect.Union(rtList); |
| return rect; |
| } |
| |
| void CFWL_ComboBox::EditModifyStylesEx(uint32_t dwStylesExAdded, |
| uint32_t dwStylesExRemoved) { |
| if (m_pEdit) |
| m_pEdit->ModifyStylesEx(dwStylesExAdded, dwStylesExRemoved); |
| } |
| |
| void CFWL_ComboBox::ShowDropList(bool bActivate) { |
| if (IsDropListVisible() == bActivate) |
| return; |
| |
| if (bActivate) { |
| CFWL_Event preEvent(CFWL_Event::Type::PreDropDown, this); |
| DispatchEvent(&preEvent); |
| if (!preEvent.GetSrcTarget()) |
| return; |
| |
| CFWL_ComboList* pComboList = m_pListBox; |
| int32_t iItems = pComboList->CountItems(nullptr); |
| if (iItems < 1) |
| return; |
| |
| ResetListItemAlignment(); |
| pComboList->ChangeSelected(m_iCurSel); |
| |
| float fItemHeight = pComboList->CalcItemHeight(); |
| float fBorder = GetCXBorderSize(); |
| float fPopupMin = 0.0f; |
| if (iItems > 3) |
| fPopupMin = fItemHeight * 3 + fBorder * 2; |
| |
| float fPopupMax = fItemHeight * iItems + fBorder * 2; |
| CFX_RectF rtList(m_ClientRect.left, 0, m_WidgetRect.width, 0); |
| GetPopupPos(fPopupMin, fPopupMax, m_WidgetRect, &rtList); |
| m_pListBox->SetWidgetRect(rtList); |
| m_pListBox->Update(); |
| } |
| |
| if (bActivate) { |
| m_pListBox->RemoveStates(FWL_WGTSTATE_Invisible); |
| CFWL_Event postEvent(CFWL_Event::Type::PostDropDown, this); |
| DispatchEvent(&postEvent); |
| } else { |
| m_pListBox->SetStates(FWL_WGTSTATE_Invisible); |
| } |
| |
| CFX_RectF rect = m_pListBox->GetWidgetRect(); |
| rect.Inflate(2, 2); |
| RepaintRect(rect); |
| } |
| |
| void CFWL_ComboBox::MatchEditText() { |
| WideString wsText = m_pEdit->GetText(); |
| int32_t iMatch = m_pListBox->MatchItem(wsText.AsStringView()); |
| if (iMatch != m_iCurSel) { |
| m_pListBox->ChangeSelected(iMatch); |
| if (iMatch >= 0) |
| SyncEditText(iMatch); |
| } else if (iMatch >= 0) { |
| m_pEdit->SetSelected(); |
| } |
| m_iCurSel = iMatch; |
| } |
| |
| void CFWL_ComboBox::SyncEditText(int32_t iListItem) { |
| CFWL_ListBox::Item* hItem = m_pListBox->GetItem(this, iListItem); |
| m_pEdit->SetText(hItem ? hItem->GetText() : WideString()); |
| m_pEdit->Update(); |
| m_pEdit->SetSelected(); |
| } |
| |
| void CFWL_ComboBox::Layout() { |
| m_ClientRect = GetClientRect(); |
| m_ContentRect = m_ClientRect; |
| |
| IFWL_ThemeProvider* theme = GetThemeProvider(); |
| float borderWidth = 1; |
| float fBtn = theme->GetScrollBarWidth(); |
| if (!(GetStylesEx() & FWL_STYLEEXT_CMB_ReadOnly)) { |
| m_BtnRect = |
| CFX_RectF(m_ClientRect.right() - fBtn, m_ClientRect.top + borderWidth, |
| fBtn - borderWidth, m_ClientRect.height - 2 * borderWidth); |
| } |
| |
| CFWL_ThemePart part; |
| part.m_pWidget = this; |
| CFX_RectF pUIMargin = theme->GetUIMargin(part); |
| m_ContentRect.Deflate(pUIMargin.left, pUIMargin.top, pUIMargin.width, |
| pUIMargin.height); |
| |
| if (!IsDropDownStyle() || !m_pEdit) |
| return; |
| |
| CFX_RectF rtEdit(m_ContentRect.left, m_ContentRect.top, |
| m_ContentRect.width - fBtn, m_ContentRect.height); |
| m_pEdit->SetWidgetRect(rtEdit); |
| |
| if (m_iCurSel >= 0) { |
| CFWL_ListBox::Item* hItem = m_pListBox->GetItem(this, m_iCurSel); |
| ScopedUpdateLock update_lock(m_pEdit); |
| m_pEdit->SetText(hItem ? hItem->GetText() : WideString()); |
| } |
| m_pEdit->Update(); |
| } |
| |
| void CFWL_ComboBox::ResetEditAlignment() { |
| if (!m_pEdit) |
| return; |
| |
| uint32_t dwAdd = 0; |
| switch (m_Properties.m_dwStyleExes & FWL_STYLEEXT_CMB_EditHAlignMask) { |
| case FWL_STYLEEXT_CMB_EditHCenter: { |
| dwAdd |= FWL_STYLEEXT_EDT_HCenter; |
| break; |
| } |
| default: { |
| dwAdd |= FWL_STYLEEXT_EDT_HNear; |
| break; |
| } |
| } |
| switch (m_Properties.m_dwStyleExes & FWL_STYLEEXT_CMB_EditVAlignMask) { |
| case FWL_STYLEEXT_CMB_EditVCenter: { |
| dwAdd |= FWL_STYLEEXT_EDT_VCenter; |
| break; |
| } |
| case FWL_STYLEEXT_CMB_EditVFar: { |
| dwAdd |= FWL_STYLEEXT_EDT_VFar; |
| break; |
| } |
| default: { |
| dwAdd |= FWL_STYLEEXT_EDT_VNear; |
| break; |
| } |
| } |
| if (m_Properties.m_dwStyleExes & FWL_STYLEEXT_CMB_EditJustified) |
| dwAdd |= FWL_STYLEEXT_EDT_Justified; |
| |
| m_pEdit->ModifyStylesEx(dwAdd, FWL_STYLEEXT_EDT_HAlignMask | |
| FWL_STYLEEXT_EDT_HAlignModeMask | |
| FWL_STYLEEXT_EDT_VAlignMask); |
| } |
| |
| void CFWL_ComboBox::ResetListItemAlignment() { |
| if (!m_pListBox) |
| return; |
| |
| uint32_t dwAdd = 0; |
| switch (m_Properties.m_dwStyleExes & FWL_STYLEEXT_CMB_ListItemAlignMask) { |
| case FWL_STYLEEXT_CMB_ListItemCenterAlign: { |
| dwAdd |= FWL_STYLEEXT_LTB_CenterAlign; |
| break; |
| } |
| default: { |
| dwAdd |= FWL_STYLEEXT_LTB_LeftAlign; |
| break; |
| } |
| } |
| m_pListBox->ModifyStylesEx(dwAdd, FWL_STYLEEXT_CMB_ListItemAlignMask); |
| } |
| |
| void CFWL_ComboBox::ProcessSelChanged(bool bLButtonUp) { |
| m_iCurSel = m_pListBox->GetItemIndex(this, m_pListBox->GetSelItem(0)); |
| if (!IsDropDownStyle()) { |
| RepaintRect(m_ClientRect); |
| return; |
| } |
| |
| CFWL_ListBox::Item* hItem = m_pListBox->GetItem(this, m_iCurSel); |
| if (!hItem) |
| return; |
| if (m_pEdit) { |
| m_pEdit->SetText(hItem->GetText()); |
| m_pEdit->Update(); |
| m_pEdit->SetSelected(); |
| } |
| |
| CFWL_EventSelectChanged ev(this); |
| ev.bLButtonUp = bLButtonUp; |
| DispatchEvent(&ev); |
| } |
| |
| void CFWL_ComboBox::OnProcessMessage(CFWL_Message* pMessage) { |
| bool backDefault = true; |
| switch (pMessage->GetType()) { |
| case CFWL_Message::Type::kSetFocus: { |
| backDefault = false; |
| OnFocusChanged(pMessage, true); |
| break; |
| } |
| case CFWL_Message::Type::kKillFocus: { |
| backDefault = false; |
| OnFocusChanged(pMessage, false); |
| break; |
| } |
| case CFWL_Message::Type::kMouse: { |
| backDefault = false; |
| CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage); |
| switch (pMsg->m_dwCmd) { |
| case FWL_MouseCommand::LeftButtonDown: |
| OnLButtonDown(pMsg); |
| break; |
| case FWL_MouseCommand::LeftButtonUp: |
| OnLButtonUp(pMsg); |
| break; |
| default: |
| break; |
| } |
| break; |
| } |
| case CFWL_Message::Type::kKey: { |
| backDefault = false; |
| CFWL_MessageKey* pKey = static_cast<CFWL_MessageKey*>(pMessage); |
| if (pKey->m_dwCmd == CFWL_MessageKey::Type::kKeyUp) |
| break; |
| if (IsDropListVisible() && |
| pKey->m_dwCmd == CFWL_MessageKey::Type::kKeyDown) { |
| bool bListKey = pKey->m_dwKeyCode == XFA_FWL_VKEY_Up || |
| pKey->m_dwKeyCode == XFA_FWL_VKEY_Down || |
| pKey->m_dwKeyCode == XFA_FWL_VKEY_Return || |
| pKey->m_dwKeyCode == XFA_FWL_VKEY_Escape; |
| if (bListKey) { |
| m_pListBox->GetDelegate()->OnProcessMessage(pMessage); |
| break; |
| } |
| } |
| OnKey(pKey); |
| break; |
| } |
| default: |
| break; |
| } |
| // Dst target could be |this|, continue only if not destroyed by above. |
| if (backDefault && pMessage->GetDstTarget()) |
| CFWL_Widget::OnProcessMessage(pMessage); |
| } |
| |
| void CFWL_ComboBox::OnProcessEvent(CFWL_Event* pEvent) { |
| CFWL_Event::Type type = pEvent->GetType(); |
| if (type == CFWL_Event::Type::Scroll) { |
| CFWL_EventScroll* pScrollEvent = static_cast<CFWL_EventScroll*>(pEvent); |
| CFWL_EventScroll pScrollEv(this); |
| pScrollEv.m_iScrollCode = pScrollEvent->m_iScrollCode; |
| pScrollEv.m_fPos = pScrollEvent->m_fPos; |
| DispatchEvent(&pScrollEv); |
| } else if (type == CFWL_Event::Type::TextWillChange) { |
| CFWL_Event pTemp(CFWL_Event::Type::EditChanged, this); |
| DispatchEvent(&pTemp); |
| } |
| } |
| |
| void CFWL_ComboBox::OnDrawWidget(CFGAS_GEGraphics* pGraphics, |
| const CFX_Matrix& matrix) { |
| DrawWidget(pGraphics, matrix); |
| } |
| |
| void CFWL_ComboBox::OnLButtonUp(CFWL_MessageMouse* pMsg) { |
| if (m_BtnRect.Contains(pMsg->m_pos)) |
| m_iBtnState = CFWL_PartState_Hovered; |
| else |
| m_iBtnState = CFWL_PartState_Normal; |
| |
| RepaintRect(m_BtnRect); |
| } |
| |
| void CFWL_ComboBox::OnLButtonDown(CFWL_MessageMouse* pMsg) { |
| bool bDropDown = IsDropListVisible(); |
| CFX_RectF& rtBtn = bDropDown ? m_BtnRect : m_ClientRect; |
| if (!rtBtn.Contains(pMsg->m_pos)) |
| return; |
| |
| if (IsDropListVisible()) { |
| ShowDropList(false); |
| return; |
| } |
| if (m_pEdit) |
| MatchEditText(); |
| ShowDropList(true); |
| } |
| |
| void CFWL_ComboBox::OnFocusChanged(CFWL_Message* pMsg, bool bSet) { |
| if (bSet) { |
| m_Properties.m_dwStates |= FWL_WGTSTATE_Focused; |
| if ((m_pEdit->GetStates() & FWL_WGTSTATE_Focused) == 0) { |
| CFWL_MessageSetFocus msg(nullptr, m_pEdit); |
| m_pEdit->GetDelegate()->OnProcessMessage(&msg); |
| } |
| } else { |
| m_Properties.m_dwStates &= ~FWL_WGTSTATE_Focused; |
| ShowDropList(false); |
| CFWL_MessageKillFocus msg(m_pEdit); |
| m_pEdit->GetDelegate()->OnProcessMessage(&msg); |
| } |
| } |
| |
| void CFWL_ComboBox::OnKey(CFWL_MessageKey* pMsg) { |
| uint32_t dwKeyCode = pMsg->m_dwKeyCode; |
| const bool bUp = dwKeyCode == XFA_FWL_VKEY_Up; |
| const bool bDown = dwKeyCode == XFA_FWL_VKEY_Down; |
| if (bUp || bDown) { |
| CFWL_ComboList* pComboList = m_pListBox; |
| int32_t iCount = pComboList->CountItems(nullptr); |
| if (iCount < 1) |
| return; |
| |
| bool bMatchEqual = false; |
| int32_t iCurSel = m_iCurSel; |
| if (m_pEdit) { |
| WideString wsText = m_pEdit->GetText(); |
| iCurSel = pComboList->MatchItem(wsText.AsStringView()); |
| if (iCurSel >= 0) { |
| CFWL_ListBox::Item* item = m_pListBox->GetSelItem(iCurSel); |
| bMatchEqual = wsText == (item ? item->GetText() : WideString()); |
| } |
| } |
| if (iCurSel < 0) { |
| iCurSel = 0; |
| } else if (bMatchEqual) { |
| if ((bUp && iCurSel == 0) || (bDown && iCurSel == iCount - 1)) |
| return; |
| if (bUp) |
| iCurSel--; |
| else |
| iCurSel++; |
| } |
| m_iCurSel = iCurSel; |
| SyncEditText(m_iCurSel); |
| return; |
| } |
| if (m_pEdit) |
| m_pEdit->GetDelegate()->OnProcessMessage(pMsg); |
| } |
| |
| void CFWL_ComboBox::GetPopupPos(float fMinHeight, |
| float fMaxHeight, |
| const CFX_RectF& rtAnchor, |
| CFX_RectF* pPopupRect) { |
| GetWidgetMgr()->GetAdapterPopupPos(this, fMinHeight, fMaxHeight, rtAnchor, |
| pPopupRect); |
| } |