595 lines
16 KiB
C++
595 lines
16 KiB
C++
// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "fpdfsdk/pwl/cpwl_combo_box.h"
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#include <algorithm>
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#include <sstream>
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#include <utility>
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#include "core/fxge/cfx_pathdata.h"
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#include "core/fxge/cfx_renderdevice.h"
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#include "fpdfsdk/pwl/cpwl_edit.h"
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#include "fpdfsdk/pwl/cpwl_edit_ctrl.h"
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#include "fpdfsdk/pwl/cpwl_list_box.h"
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#include "fpdfsdk/pwl/cpwl_list_impl.h"
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#include "fpdfsdk/pwl/cpwl_wnd.h"
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#include "public/fpdf_fwlevent.h"
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#include "third_party/base/ptr_util.h"
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namespace {
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constexpr float kComboBoxDefaultFontSize = 12.0f;
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constexpr float kComboBoxTriangleHalfLength = 3.0f;
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constexpr int kDefaultButtonWidth = 13;
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} // namespace
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CPWL_CBListBox::CPWL_CBListBox(
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const CreateParams& cp,
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std::unique_ptr<IPWL_SystemHandler::PerWindowData> pAttachedData)
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: CPWL_ListBox(cp, std::move(pAttachedData)) {}
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CPWL_CBListBox::~CPWL_CBListBox() = default;
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bool CPWL_CBListBox::OnLButtonUp(const CFX_PointF& point, uint32_t nFlag) {
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CPWL_Wnd::OnLButtonUp(point, nFlag);
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if (!m_bMouseDown)
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return true;
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ReleaseCapture();
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m_bMouseDown = false;
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if (!ClientHitTest(point))
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return true;
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if (CPWL_Wnd* pParent = GetParentWindow())
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pParent->NotifyLButtonUp(this, point);
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return !OnNotifySelectionChanged(false, nFlag);
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}
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bool CPWL_CBListBox::IsMovementKey(uint16_t nChar) const {
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switch (nChar) {
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case FWL_VKEY_Up:
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case FWL_VKEY_Down:
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case FWL_VKEY_Home:
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case FWL_VKEY_Left:
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case FWL_VKEY_End:
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case FWL_VKEY_Right:
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return true;
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default:
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return false;
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}
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}
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bool CPWL_CBListBox::OnMovementKeyDown(uint16_t nChar, uint32_t nFlag) {
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ASSERT(IsMovementKey(nChar));
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switch (nChar) {
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case FWL_VKEY_Up:
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m_pList->OnVK_UP(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
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break;
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case FWL_VKEY_Down:
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m_pList->OnVK_DOWN(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
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break;
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case FWL_VKEY_Home:
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m_pList->OnVK_HOME(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
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break;
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case FWL_VKEY_Left:
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m_pList->OnVK_LEFT(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
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break;
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case FWL_VKEY_End:
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m_pList->OnVK_END(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
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break;
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case FWL_VKEY_Right:
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m_pList->OnVK_RIGHT(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
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break;
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}
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return OnNotifySelectionChanged(true, nFlag);
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}
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bool CPWL_CBListBox::IsChar(uint16_t nChar, uint32_t nFlag) const {
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return m_pList->OnChar(nChar, IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
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}
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bool CPWL_CBListBox::OnCharNotify(uint16_t nChar, uint32_t nFlag) {
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if (auto* pComboBox = static_cast<CPWL_ComboBox*>(GetParentWindow()))
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pComboBox->SetSelectText();
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return OnNotifySelectionChanged(true, nFlag);
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}
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CPWL_CBButton::CPWL_CBButton(
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const CreateParams& cp,
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std::unique_ptr<IPWL_SystemHandler::PerWindowData> pAttachedData)
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: CPWL_Wnd(cp, std::move(pAttachedData)) {}
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CPWL_CBButton::~CPWL_CBButton() = default;
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void CPWL_CBButton::DrawThisAppearance(CFX_RenderDevice* pDevice,
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const CFX_Matrix& mtUser2Device) {
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CPWL_Wnd::DrawThisAppearance(pDevice, mtUser2Device);
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CFX_FloatRect rectWnd = CPWL_Wnd::GetWindowRect();
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if (!IsVisible() || rectWnd.IsEmpty())
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return;
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CFX_PointF ptCenter = GetCenterPoint();
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static constexpr float kComboBoxTriangleQuarterLength =
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kComboBoxTriangleHalfLength * 0.5;
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CFX_PointF pt1(ptCenter.x - kComboBoxTriangleHalfLength,
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ptCenter.y + kComboBoxTriangleQuarterLength);
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CFX_PointF pt2(ptCenter.x + kComboBoxTriangleHalfLength,
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ptCenter.y + kComboBoxTriangleQuarterLength);
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CFX_PointF pt3(ptCenter.x, ptCenter.y - kComboBoxTriangleQuarterLength);
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if (IsFloatBigger(rectWnd.right - rectWnd.left,
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kComboBoxTriangleHalfLength * 2) &&
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IsFloatBigger(rectWnd.top - rectWnd.bottom,
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kComboBoxTriangleHalfLength)) {
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CFX_PathData path;
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path.AppendPoint(pt1, FXPT_TYPE::MoveTo, false);
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path.AppendPoint(pt2, FXPT_TYPE::LineTo, false);
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path.AppendPoint(pt3, FXPT_TYPE::LineTo, false);
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path.AppendPoint(pt1, FXPT_TYPE::LineTo, false);
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pDevice->DrawPath(&path, &mtUser2Device, nullptr,
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PWL_DEFAULT_BLACKCOLOR.ToFXColor(GetTransparency()), 0,
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FXFILL_ALTERNATE);
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}
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}
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bool CPWL_CBButton::OnLButtonDown(const CFX_PointF& point, uint32_t nFlag) {
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CPWL_Wnd::OnLButtonDown(point, nFlag);
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SetCapture();
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if (CPWL_Wnd* pParent = GetParentWindow())
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pParent->NotifyLButtonDown(this, point);
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return true;
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}
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bool CPWL_CBButton::OnLButtonUp(const CFX_PointF& point, uint32_t nFlag) {
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CPWL_Wnd::OnLButtonUp(point, nFlag);
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ReleaseCapture();
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return true;
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}
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CPWL_ComboBox::CPWL_ComboBox(
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const CreateParams& cp,
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std::unique_ptr<IPWL_SystemHandler::PerWindowData> pAttachedData)
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: CPWL_Wnd(cp, std::move(pAttachedData)) {
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GetCreationParams()->dwFlags &= ~PWS_HSCROLL;
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GetCreationParams()->dwFlags &= ~PWS_VSCROLL;
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}
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CPWL_ComboBox::~CPWL_ComboBox() = default;
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void CPWL_ComboBox::OnDestroy() {
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// Until cleanup takes place in the virtual destructor for CPWL_Wnd
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// subclasses, implement the virtual OnDestroy method that does the
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// cleanup first, then invokes the superclass OnDestroy ... gee,
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// like a dtor would.
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m_pList.Release();
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m_pButton.Release();
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m_pEdit.Release();
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CPWL_Wnd::OnDestroy();
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}
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void CPWL_ComboBox::SetFocus() {
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if (m_pEdit)
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m_pEdit->SetFocus();
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}
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void CPWL_ComboBox::KillFocus() {
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if (!SetPopup(false))
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return;
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CPWL_Wnd::KillFocus();
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}
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WideString CPWL_ComboBox::GetSelectedText() {
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if (m_pEdit)
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return m_pEdit->GetSelectedText();
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return WideString();
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}
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void CPWL_ComboBox::ReplaceSelection(const WideString& text) {
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if (m_pEdit)
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m_pEdit->ReplaceSelection(text);
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}
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bool CPWL_ComboBox::CanUndo() {
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return m_pEdit && m_pEdit->CanUndo();
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}
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bool CPWL_ComboBox::CanRedo() {
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return m_pEdit && m_pEdit->CanRedo();
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}
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bool CPWL_ComboBox::Undo() {
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return m_pEdit && m_pEdit->Undo();
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}
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bool CPWL_ComboBox::Redo() {
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return m_pEdit && m_pEdit->Redo();
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}
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WideString CPWL_ComboBox::GetText() {
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return m_pEdit ? m_pEdit->GetText() : WideString();
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}
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void CPWL_ComboBox::SetText(const WideString& text) {
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if (m_pEdit)
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m_pEdit->SetText(text);
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}
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void CPWL_ComboBox::AddString(const WideString& str) {
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if (m_pList)
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m_pList->AddString(str);
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}
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int32_t CPWL_ComboBox::GetSelect() const {
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return m_nSelectItem;
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}
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void CPWL_ComboBox::SetSelect(int32_t nItemIndex) {
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if (m_pList)
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m_pList->Select(nItemIndex);
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m_pEdit->SetText(m_pList->GetText());
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m_nSelectItem = nItemIndex;
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}
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void CPWL_ComboBox::SetEditSelection(int32_t nStartChar, int32_t nEndChar) {
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if (m_pEdit)
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m_pEdit->SetSelection(nStartChar, nEndChar);
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}
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void CPWL_ComboBox::GetEditSelection(int32_t& nStartChar,
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int32_t& nEndChar) const {
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nStartChar = -1;
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nEndChar = -1;
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if (m_pEdit)
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m_pEdit->GetSelection(nStartChar, nEndChar);
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}
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void CPWL_ComboBox::ClearSelection() {
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if (m_pEdit)
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m_pEdit->ClearSelection();
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}
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void CPWL_ComboBox::CreateChildWnd(const CreateParams& cp) {
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CreateEdit(cp);
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CreateButton(cp);
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CreateListBox(cp);
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}
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void CPWL_ComboBox::CreateEdit(const CreateParams& cp) {
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if (m_pEdit)
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return;
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CreateParams ecp = cp;
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ecp.dwFlags = PWS_VISIBLE | PWS_CHILD | PWS_BORDER | PES_CENTER |
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PES_AUTOSCROLL | PES_UNDO;
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if (HasFlag(PWS_AUTOFONTSIZE))
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ecp.dwFlags |= PWS_AUTOFONTSIZE;
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if (!HasFlag(PCBS_ALLOWCUSTOMTEXT))
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ecp.dwFlags |= PWS_READONLY;
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ecp.rcRectWnd = CFX_FloatRect();
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ecp.dwBorderWidth = 0;
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ecp.nBorderStyle = BorderStyle::SOLID;
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auto pEdit = pdfium::MakeUnique<CPWL_Edit>(ecp, CloneAttachedData());
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m_pEdit = pEdit.get();
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m_pEdit->AttachFFLData(m_pFormFiller.Get());
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AddChild(std::move(pEdit));
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m_pEdit->Realize();
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}
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void CPWL_ComboBox::CreateButton(const CreateParams& cp) {
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if (m_pButton)
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return;
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CreateParams bcp = cp;
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bcp.dwFlags = PWS_VISIBLE | PWS_CHILD | PWS_BORDER | PWS_BACKGROUND;
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bcp.sBackgroundColor = CFX_Color(CFX_Color::kRGB, 220.0f / 255.0f,
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220.0f / 255.0f, 220.0f / 255.0f);
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bcp.sBorderColor = PWL_DEFAULT_BLACKCOLOR;
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bcp.dwBorderWidth = 2;
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bcp.nBorderStyle = BorderStyle::BEVELED;
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bcp.eCursorType = FXCT_ARROW;
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auto pButton = pdfium::MakeUnique<CPWL_CBButton>(bcp, CloneAttachedData());
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m_pButton = pButton.get();
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AddChild(std::move(pButton));
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m_pButton->Realize();
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}
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void CPWL_ComboBox::CreateListBox(const CreateParams& cp) {
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if (m_pList)
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return;
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CreateParams lcp = cp;
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lcp.dwFlags =
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PWS_CHILD | PWS_BORDER | PWS_BACKGROUND | PLBS_HOVERSEL | PWS_VSCROLL;
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lcp.nBorderStyle = BorderStyle::SOLID;
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lcp.dwBorderWidth = 1;
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lcp.eCursorType = FXCT_ARROW;
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lcp.rcRectWnd = CFX_FloatRect();
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lcp.fFontSize =
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(cp.dwFlags & PWS_AUTOFONTSIZE) ? kComboBoxDefaultFontSize : cp.fFontSize;
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if (cp.sBorderColor.nColorType == CFX_Color::kTransparent)
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lcp.sBorderColor = PWL_DEFAULT_BLACKCOLOR;
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if (cp.sBackgroundColor.nColorType == CFX_Color::kTransparent)
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lcp.sBackgroundColor = PWL_DEFAULT_WHITECOLOR;
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auto pList = pdfium::MakeUnique<CPWL_CBListBox>(lcp, CloneAttachedData());
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m_pList = pList.get();
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m_pList->AttachFFLData(m_pFormFiller.Get());
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AddChild(std::move(pList));
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m_pList->Realize();
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}
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bool CPWL_ComboBox::RePosChildWnd() {
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ObservedPtr<CPWL_ComboBox> thisObserved(this);
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const CFX_FloatRect rcClient = GetClientRect();
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if (m_bPopup) {
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const float fOldWindowHeight = m_rcOldWindow.Height();
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const float fOldClientHeight = fOldWindowHeight - GetBorderWidth() * 2;
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CFX_FloatRect rcList = CPWL_Wnd::GetWindowRect();
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CFX_FloatRect rcButton = rcClient;
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rcButton.left =
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std::max(rcButton.right - kDefaultButtonWidth, rcClient.left);
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CFX_FloatRect rcEdit = rcClient;
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rcEdit.right = std::max(rcButton.left - 1.0f, rcEdit.left);
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if (m_bBottom) {
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rcButton.bottom = rcButton.top - fOldClientHeight;
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rcEdit.bottom = rcEdit.top - fOldClientHeight;
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rcList.top -= fOldWindowHeight;
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} else {
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rcButton.top = rcButton.bottom + fOldClientHeight;
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rcEdit.top = rcEdit.bottom + fOldClientHeight;
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rcList.bottom += fOldWindowHeight;
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}
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if (m_pButton) {
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m_pButton->Move(rcButton, true, false);
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if (!thisObserved)
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return false;
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}
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if (m_pEdit) {
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m_pEdit->Move(rcEdit, true, false);
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if (!thisObserved)
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return false;
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}
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if (m_pList) {
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if (!m_pList->SetVisible(true) || !thisObserved)
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return false;
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if (!m_pList->Move(rcList, true, false) || !thisObserved)
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return false;
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m_pList->ScrollToListItem(m_nSelectItem);
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if (!thisObserved)
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return false;
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}
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return true;
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}
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CFX_FloatRect rcButton = rcClient;
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rcButton.left = std::max(rcButton.right - kDefaultButtonWidth, rcClient.left);
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if (m_pButton) {
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m_pButton->Move(rcButton, true, false);
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if (!thisObserved)
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return false;
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}
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CFX_FloatRect rcEdit = rcClient;
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rcEdit.right = std::max(rcButton.left - 1.0f, rcEdit.left);
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if (m_pEdit) {
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m_pEdit->Move(rcEdit, true, false);
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if (!thisObserved)
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return false;
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}
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if (m_pList) {
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m_pList->SetVisible(false);
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if (!thisObserved)
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return false;
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}
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return true;
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}
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void CPWL_ComboBox::SelectAll() {
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if (m_pEdit && HasFlag(PCBS_ALLOWCUSTOMTEXT))
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m_pEdit->SelectAll();
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}
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CFX_FloatRect CPWL_ComboBox::GetFocusRect() const {
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return CFX_FloatRect();
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}
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bool CPWL_ComboBox::SetPopup(bool bPopup) {
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if (!m_pList)
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return true;
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if (bPopup == m_bPopup)
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return true;
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float fListHeight = m_pList->GetContentRect().Height();
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if (!IsFloatBigger(fListHeight, 0.0f))
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return true;
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if (!bPopup) {
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m_bPopup = bPopup;
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return Move(m_rcOldWindow, true, true);
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}
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if (!m_pFillerNotify)
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return true;
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ObservedPtr<CPWL_ComboBox> thisObserved(this);
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if (m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), 0))
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return !!thisObserved;
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if (!thisObserved)
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return false;
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float fBorderWidth = m_pList->GetBorderWidth() * 2;
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float fPopupMin = 0.0f;
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if (m_pList->GetCount() > 3)
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fPopupMin = m_pList->GetFirstHeight() * 3 + fBorderWidth;
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float fPopupMax = fListHeight + fBorderWidth;
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bool bBottom;
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float fPopupRet;
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m_pFillerNotify->QueryWherePopup(GetAttachedData(), fPopupMin, fPopupMax,
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&bBottom, &fPopupRet);
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if (!IsFloatBigger(fPopupRet, 0.0f))
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return true;
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m_rcOldWindow = CPWL_Wnd::GetWindowRect();
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m_bPopup = bPopup;
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m_bBottom = bBottom;
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CFX_FloatRect rcWindow = m_rcOldWindow;
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if (bBottom)
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rcWindow.bottom -= fPopupRet;
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else
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rcWindow.top += fPopupRet;
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if (!Move(rcWindow, true, true))
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return false;
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m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), 0);
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return !!thisObserved;
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}
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bool CPWL_ComboBox::OnKeyDown(uint16_t nChar, uint32_t nFlag) {
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if (!m_pList)
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return false;
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if (!m_pEdit)
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return false;
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m_nSelectItem = -1;
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switch (nChar) {
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case FWL_VKEY_Up:
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if (m_pList->GetCurSel() > 0) {
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if (m_pFillerNotify) {
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if (m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), nFlag))
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return false;
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if (m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), nFlag))
|
|
return false;
|
|
}
|
|
if (m_pList->IsMovementKey(nChar)) {
|
|
if (m_pList->OnMovementKeyDown(nChar, nFlag))
|
|
return false;
|
|
SetSelectText();
|
|
}
|
|
}
|
|
return true;
|
|
case FWL_VKEY_Down:
|
|
if (m_pList->GetCurSel() < m_pList->GetCount() - 1) {
|
|
if (m_pFillerNotify) {
|
|
if (m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), nFlag))
|
|
return false;
|
|
if (m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), nFlag))
|
|
return false;
|
|
}
|
|
if (m_pList->IsMovementKey(nChar)) {
|
|
if (m_pList->OnMovementKeyDown(nChar, nFlag))
|
|
return false;
|
|
SetSelectText();
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
if (HasFlag(PCBS_ALLOWCUSTOMTEXT))
|
|
return m_pEdit->OnKeyDown(nChar, nFlag);
|
|
|
|
return false;
|
|
}
|
|
|
|
bool CPWL_ComboBox::OnChar(uint16_t nChar, uint32_t nFlag) {
|
|
if (!m_pList)
|
|
return false;
|
|
|
|
if (!m_pEdit)
|
|
return false;
|
|
|
|
m_nSelectItem = -1;
|
|
if (HasFlag(PCBS_ALLOWCUSTOMTEXT))
|
|
return m_pEdit->OnChar(nChar, nFlag);
|
|
|
|
if (m_pFillerNotify) {
|
|
if (m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), nFlag))
|
|
return false;
|
|
if (m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), nFlag))
|
|
return false;
|
|
}
|
|
if (!m_pList->IsChar(nChar, nFlag))
|
|
return false;
|
|
return m_pList->OnCharNotify(nChar, nFlag);
|
|
}
|
|
|
|
void CPWL_ComboBox::NotifyLButtonDown(CPWL_Wnd* child, const CFX_PointF& pos) {
|
|
if (child == m_pButton) {
|
|
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();
|
|
SelectAll();
|
|
m_pEdit->SetFocus();
|
|
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->SelectAll();
|
|
m_pEdit->ReplaceSelection(m_pList->GetText());
|
|
m_pEdit->SelectAll();
|
|
m_nSelectItem = m_pList->GetCurSel();
|
|
}
|
|
|
|
void CPWL_ComboBox::SetFillerNotify(IPWL_Filler_Notify* pNotify) {
|
|
m_pFillerNotify = pNotify;
|
|
|
|
if (m_pEdit)
|
|
m_pEdit->SetFillerNotify(pNotify);
|
|
|
|
if (m_pList)
|
|
m_pList->SetFillerNotify(pNotify);
|
|
}
|