1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "xfa/fwl/cfwl_combobox.h"
8
9 #include <algorithm>
10 #include <memory>
11 #include <utility>
12
13 #include "third_party/base/ptr_util.h"
14 #include "xfa/fde/cfde_texteditengine.h"
15 #include "xfa/fde/cfde_textout.h"
16 #include "xfa/fwl/cfwl_app.h"
17 #include "xfa/fwl/cfwl_event.h"
18 #include "xfa/fwl/cfwl_eventselectchanged.h"
19 #include "xfa/fwl/cfwl_listbox.h"
20 #include "xfa/fwl/cfwl_messagekey.h"
21 #include "xfa/fwl/cfwl_messagekillfocus.h"
22 #include "xfa/fwl/cfwl_messagemouse.h"
23 #include "xfa/fwl/cfwl_messagesetfocus.h"
24 #include "xfa/fwl/cfwl_notedriver.h"
25 #include "xfa/fwl/cfwl_themebackground.h"
26 #include "xfa/fwl/cfwl_themepart.h"
27 #include "xfa/fwl/cfwl_themetext.h"
28 #include "xfa/fwl/cfwl_widgetmgr.h"
29 #include "xfa/fwl/fwl_widgetdef.h"
30 #include "xfa/fwl/ifwl_themeprovider.h"
31
CFWL_ComboBox(const CFWL_App * app)32 CFWL_ComboBox::CFWL_ComboBox(const CFWL_App* app)
33 : CFWL_Widget(app, pdfium::MakeUnique<CFWL_WidgetProperties>(), nullptr) {
34 InitComboList();
35 InitComboEdit();
36 }
37
38 CFWL_ComboBox::~CFWL_ComboBox() = default;
39
GetClassID() const40 FWL_Type CFWL_ComboBox::GetClassID() const {
41 return FWL_Type::ComboBox;
42 }
43
AddString(const WideString & wsText)44 void CFWL_ComboBox::AddString(const WideString& wsText) {
45 m_pListBox->AddString(wsText);
46 }
47
RemoveAt(int32_t iIndex)48 void CFWL_ComboBox::RemoveAt(int32_t iIndex) {
49 m_pListBox->RemoveAt(iIndex);
50 }
51
RemoveAll()52 void CFWL_ComboBox::RemoveAll() {
53 m_pListBox->DeleteAll();
54 }
55
ModifyStylesEx(uint32_t dwStylesExAdded,uint32_t dwStylesExRemoved)56 void CFWL_ComboBox::ModifyStylesEx(uint32_t dwStylesExAdded,
57 uint32_t dwStylesExRemoved) {
58 if (!m_pEdit)
59 InitComboEdit();
60
61 bool bAddDropDown = !!(dwStylesExAdded & FWL_STYLEEXT_CMB_DropDown);
62 bool bDelDropDown = !!(dwStylesExRemoved & FWL_STYLEEXT_CMB_DropDown);
63
64 dwStylesExRemoved &= ~FWL_STYLEEXT_CMB_DropDown;
65 m_pProperties->m_dwStyleExes |= FWL_STYLEEXT_CMB_DropDown;
66
67 if (bAddDropDown)
68 m_pEdit->ModifyStylesEx(0, FWL_STYLEEXT_EDT_ReadOnly);
69 else if (bDelDropDown)
70 m_pEdit->ModifyStylesEx(FWL_STYLEEXT_EDT_ReadOnly, 0);
71 CFWL_Widget::ModifyStylesEx(dwStylesExAdded, dwStylesExRemoved);
72 }
73
Update()74 void CFWL_ComboBox::Update() {
75 if (m_iLock)
76 return;
77 if (m_pEdit)
78 ResetEditAlignment();
79 ResetTheme();
80 Layout();
81 }
82
HitTest(const CFX_PointF & point)83 FWL_WidgetHit CFWL_ComboBox::HitTest(const CFX_PointF& point) {
84 CFX_RectF rect(0, 0, m_pProperties->m_rtWidget.width - m_rtBtn.width,
85 m_pProperties->m_rtWidget.height);
86 if (rect.Contains(point))
87 return FWL_WidgetHit::Edit;
88 if (m_rtBtn.Contains(point))
89 return FWL_WidgetHit::Client;
90 if (IsDropListVisible()) {
91 rect = m_pListBox->GetWidgetRect();
92 if (rect.Contains(point))
93 return FWL_WidgetHit::Client;
94 }
95 return FWL_WidgetHit::Unknown;
96 }
97
DrawWidget(CXFA_Graphics * pGraphics,const CFX_Matrix & matrix)98 void CFWL_ComboBox::DrawWidget(CXFA_Graphics* pGraphics,
99 const CFX_Matrix& matrix) {
100 IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider.Get();
101 pGraphics->SaveGraphState();
102 pGraphics->ConcatMatrix(&matrix);
103 if (!m_rtBtn.IsEmpty(0.1f)) {
104 CFWL_ThemeBackground param;
105 param.m_pWidget = this;
106 param.m_iPart = CFWL_Part::DropDownButton;
107 param.m_dwStates = m_iBtnState;
108 param.m_pGraphics = pGraphics;
109 param.m_rtPart = m_rtBtn;
110 pTheme->DrawBackground(param);
111 }
112 pGraphics->RestoreGraphState();
113
114 if (m_pEdit) {
115 CFX_RectF rtEdit = m_pEdit->GetWidgetRect();
116 CFX_Matrix mt(1, 0, 0, 1, rtEdit.left, rtEdit.top);
117 mt.Concat(matrix);
118 m_pEdit->DrawWidget(pGraphics, mt);
119 }
120 if (m_pListBox && IsDropListVisible()) {
121 CFX_RectF rtList = m_pListBox->GetWidgetRect();
122 CFX_Matrix mt(1, 0, 0, 1, rtList.left, rtList.top);
123 mt.Concat(matrix);
124 m_pListBox->DrawWidget(pGraphics, mt);
125 }
126 }
127
SetThemeProvider(IFWL_ThemeProvider * pThemeProvider)128 void CFWL_ComboBox::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) {
129 if (!pThemeProvider)
130 return;
131
132 m_pProperties->m_pThemeProvider = pThemeProvider;
133 if (m_pListBox)
134 m_pListBox->SetThemeProvider(pThemeProvider);
135 if (m_pEdit)
136 m_pEdit->SetThemeProvider(pThemeProvider);
137 }
138
GetTextByIndex(int32_t iIndex) const139 WideString CFWL_ComboBox::GetTextByIndex(int32_t iIndex) const {
140 CFWL_ListItem* pItem = static_cast<CFWL_ListItem*>(
141 m_pListBox->GetItem(m_pListBox.get(), iIndex));
142 return pItem ? pItem->GetText() : WideString();
143 }
144
SetCurSel(int32_t iSel)145 void CFWL_ComboBox::SetCurSel(int32_t iSel) {
146 int32_t iCount = m_pListBox->CountItems(nullptr);
147 bool bClearSel = iSel < 0 || iSel >= iCount;
148 if (IsDropDownStyle() && m_pEdit) {
149 if (bClearSel) {
150 m_pEdit->SetText(WideString());
151 } else {
152 CFWL_ListItem* hItem = m_pListBox->GetItem(this, iSel);
153 m_pEdit->SetText(hItem ? hItem->GetText() : WideString());
154 }
155 m_pEdit->Update();
156 }
157 m_iCurSel = bClearSel ? -1 : iSel;
158 }
159
SetStates(uint32_t dwStates)160 void CFWL_ComboBox::SetStates(uint32_t dwStates) {
161 if (IsDropDownStyle() && m_pEdit)
162 m_pEdit->SetStates(dwStates);
163 if (m_pListBox)
164 m_pListBox->SetStates(dwStates);
165 CFWL_Widget::SetStates(dwStates);
166 }
167
RemoveStates(uint32_t dwStates)168 void CFWL_ComboBox::RemoveStates(uint32_t dwStates) {
169 if (IsDropDownStyle() && m_pEdit)
170 m_pEdit->RemoveStates(dwStates);
171 if (m_pListBox)
172 m_pListBox->RemoveStates(dwStates);
173 CFWL_Widget::RemoveStates(dwStates);
174 }
175
SetEditText(const WideString & wsText)176 void CFWL_ComboBox::SetEditText(const WideString& wsText) {
177 if (!m_pEdit)
178 return;
179
180 m_pEdit->SetText(wsText);
181 m_pEdit->Update();
182 }
183
GetEditText() const184 WideString CFWL_ComboBox::GetEditText() const {
185 if (m_pEdit)
186 return m_pEdit->GetText();
187 if (!m_pListBox)
188 return WideString();
189
190 CFWL_ListItem* hItem = m_pListBox->GetItem(this, m_iCurSel);
191 return hItem ? hItem->GetText() : WideString();
192 }
193
OpenDropDownList(bool bActivate)194 void CFWL_ComboBox::OpenDropDownList(bool bActivate) {
195 ShowDropList(bActivate);
196 }
197
GetBBox() const198 CFX_RectF CFWL_ComboBox::GetBBox() const {
199 CFX_RectF rect = m_pProperties->m_rtWidget;
200 if (!m_pListBox || !IsDropListVisible())
201 return rect;
202
203 CFX_RectF rtList = m_pListBox->GetWidgetRect();
204 rtList.Offset(rect.left, rect.top);
205 rect.Union(rtList);
206 return rect;
207 }
208
EditModifyStylesEx(uint32_t dwStylesExAdded,uint32_t dwStylesExRemoved)209 void CFWL_ComboBox::EditModifyStylesEx(uint32_t dwStylesExAdded,
210 uint32_t dwStylesExRemoved) {
211 if (m_pEdit)
212 m_pEdit->ModifyStylesEx(dwStylesExAdded, dwStylesExRemoved);
213 }
214
ShowDropList(bool bActivate)215 void CFWL_ComboBox::ShowDropList(bool bActivate) {
216 if (IsDropListVisible() == bActivate)
217 return;
218
219 if (bActivate) {
220 CFWL_Event preEvent(CFWL_Event::Type::PreDropDown, this);
221 DispatchEvent(&preEvent);
222 if (!preEvent.GetSrcTarget())
223 return;
224
225 CFWL_ComboList* pComboList = m_pListBox.get();
226 int32_t iItems = pComboList->CountItems(nullptr);
227 if (iItems < 1)
228 return;
229
230 ResetListItemAlignment();
231 pComboList->ChangeSelected(m_iCurSel);
232
233 float fItemHeight = pComboList->CalcItemHeight();
234 float fBorder = GetCXBorderSize();
235 float fPopupMin = 0.0f;
236 if (iItems > 3)
237 fPopupMin = fItemHeight * 3 + fBorder * 2;
238
239 float fPopupMax = fItemHeight * iItems + fBorder * 2;
240 CFX_RectF rtList(m_rtClient.left, 0, m_pProperties->m_rtWidget.width, 0);
241 GetPopupPos(fPopupMin, fPopupMax, m_pProperties->m_rtWidget, &rtList);
242
243 m_pListBox->SetWidgetRect(rtList);
244 m_pListBox->Update();
245 }
246
247 if (bActivate) {
248 m_pListBox->RemoveStates(FWL_WGTSTATE_Invisible);
249 CFWL_Event postEvent(CFWL_Event::Type::PostDropDown, this);
250 DispatchEvent(&postEvent);
251 } else {
252 m_pListBox->SetStates(FWL_WGTSTATE_Invisible);
253 }
254
255 CFX_RectF rect = m_pListBox->GetWidgetRect();
256 rect.Inflate(2, 2);
257 RepaintRect(rect);
258 }
259
MatchEditText()260 void CFWL_ComboBox::MatchEditText() {
261 WideString wsText = m_pEdit->GetText();
262 int32_t iMatch = m_pListBox->MatchItem(wsText.AsStringView());
263 if (iMatch != m_iCurSel) {
264 m_pListBox->ChangeSelected(iMatch);
265 if (iMatch >= 0)
266 SyncEditText(iMatch);
267 } else if (iMatch >= 0) {
268 m_pEdit->SetSelected();
269 }
270 m_iCurSel = iMatch;
271 }
272
SyncEditText(int32_t iListItem)273 void CFWL_ComboBox::SyncEditText(int32_t iListItem) {
274 CFWL_ListItem* hItem = m_pListBox->GetItem(this, iListItem);
275 m_pEdit->SetText(hItem ? hItem->GetText() : WideString());
276 m_pEdit->Update();
277 m_pEdit->SetSelected();
278 }
279
Layout()280 void CFWL_ComboBox::Layout() {
281 m_rtClient = GetClientRect();
282 m_rtContent = m_rtClient;
283 IFWL_ThemeProvider* theme = GetAvailableTheme();
284 if (!theme)
285 return;
286
287 float borderWidth = 1;
288 float fBtn = theme->GetScrollBarWidth();
289 if (!(GetStylesEx() & FWL_STYLEEXT_CMB_ReadOnly)) {
290 m_rtBtn =
291 CFX_RectF(m_rtClient.right() - fBtn, m_rtClient.top + borderWidth,
292 fBtn - borderWidth, m_rtClient.height - 2 * borderWidth);
293 }
294
295 CFWL_ThemePart part;
296 part.m_pWidget = this;
297 CFX_RectF pUIMargin = theme->GetUIMargin(part);
298 m_rtContent.Deflate(pUIMargin.left, pUIMargin.top, pUIMargin.width,
299 pUIMargin.height);
300
301 if (!IsDropDownStyle() || !m_pEdit)
302 return;
303
304 CFX_RectF rtEdit(m_rtContent.left, m_rtContent.top, m_rtContent.width - fBtn,
305 m_rtContent.height);
306 m_pEdit->SetWidgetRect(rtEdit);
307
308 if (m_iCurSel >= 0) {
309 CFWL_ListItem* hItem = m_pListBox->GetItem(this, m_iCurSel);
310 ScopedUpdateLock update_lock(m_pEdit.get());
311 m_pEdit->SetText(hItem ? hItem->GetText() : WideString());
312 }
313 m_pEdit->Update();
314 }
315
ResetTheme()316 void CFWL_ComboBox::ResetTheme() {
317 if (!m_pProperties->m_pThemeProvider)
318 m_pProperties->m_pThemeProvider = GetAvailableTheme();
319
320 IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider.Get();
321 if (m_pListBox && !m_pListBox->GetThemeProvider())
322 m_pListBox->SetThemeProvider(pTheme);
323 if (m_pEdit && !m_pEdit->GetThemeProvider())
324 m_pEdit->SetThemeProvider(pTheme);
325 }
326
ResetEditAlignment()327 void CFWL_ComboBox::ResetEditAlignment() {
328 if (!m_pEdit)
329 return;
330
331 uint32_t dwAdd = 0;
332 switch (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_EditHAlignMask) {
333 case FWL_STYLEEXT_CMB_EditHCenter: {
334 dwAdd |= FWL_STYLEEXT_EDT_HCenter;
335 break;
336 }
337 default: {
338 dwAdd |= FWL_STYLEEXT_EDT_HNear;
339 break;
340 }
341 }
342 switch (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_EditVAlignMask) {
343 case FWL_STYLEEXT_CMB_EditVCenter: {
344 dwAdd |= FWL_STYLEEXT_EDT_VCenter;
345 break;
346 }
347 case FWL_STYLEEXT_CMB_EditVFar: {
348 dwAdd |= FWL_STYLEEXT_EDT_VFar;
349 break;
350 }
351 default: {
352 dwAdd |= FWL_STYLEEXT_EDT_VNear;
353 break;
354 }
355 }
356 if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_EditJustified)
357 dwAdd |= FWL_STYLEEXT_EDT_Justified;
358
359 m_pEdit->ModifyStylesEx(dwAdd, FWL_STYLEEXT_EDT_HAlignMask |
360 FWL_STYLEEXT_EDT_HAlignModeMask |
361 FWL_STYLEEXT_EDT_VAlignMask);
362 }
363
ResetListItemAlignment()364 void CFWL_ComboBox::ResetListItemAlignment() {
365 if (!m_pListBox)
366 return;
367
368 uint32_t dwAdd = 0;
369 switch (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_ListItemAlignMask) {
370 case FWL_STYLEEXT_CMB_ListItemCenterAlign: {
371 dwAdd |= FWL_STYLEEXT_LTB_CenterAlign;
372 break;
373 }
374 default: {
375 dwAdd |= FWL_STYLEEXT_LTB_LeftAlign;
376 break;
377 }
378 }
379 m_pListBox->ModifyStylesEx(dwAdd, FWL_STYLEEXT_CMB_ListItemAlignMask);
380 }
381
ProcessSelChanged(bool bLButtonUp)382 void CFWL_ComboBox::ProcessSelChanged(bool bLButtonUp) {
383 m_iCurSel = m_pListBox->GetItemIndex(this, m_pListBox->GetSelItem(0));
384 if (!IsDropDownStyle()) {
385 RepaintRect(m_rtClient);
386 return;
387 }
388
389 CFWL_ListItem* hItem = m_pListBox->GetItem(this, m_iCurSel);
390 if (!hItem)
391 return;
392 if (m_pEdit) {
393 m_pEdit->SetText(hItem->GetText());
394 m_pEdit->Update();
395 m_pEdit->SetSelected();
396 }
397
398 CFWL_EventSelectChanged ev(this);
399 ev.bLButtonUp = bLButtonUp;
400 DispatchEvent(&ev);
401 }
402
InitComboList()403 void CFWL_ComboBox::InitComboList() {
404 if (m_pListBox)
405 return;
406
407 auto prop = pdfium::MakeUnique<CFWL_WidgetProperties>();
408 prop->m_pParent = this;
409 prop->m_dwStyles = FWL_WGTSTYLE_Border | FWL_WGTSTYLE_VScroll;
410 prop->m_dwStates = FWL_WGTSTATE_Invisible;
411 prop->m_pThemeProvider = m_pProperties->m_pThemeProvider;
412 m_pListBox = pdfium::MakeUnique<CFWL_ComboList>(m_pOwnerApp.Get(),
413 std::move(prop), this);
414 }
415
InitComboEdit()416 void CFWL_ComboBox::InitComboEdit() {
417 if (m_pEdit)
418 return;
419
420 auto prop = pdfium::MakeUnique<CFWL_WidgetProperties>();
421 prop->m_pParent = this;
422 prop->m_pThemeProvider = m_pProperties->m_pThemeProvider;
423
424 m_pEdit = pdfium::MakeUnique<CFWL_ComboEdit>(m_pOwnerApp.Get(),
425 std::move(prop), this);
426 m_pEdit->SetOuter(this);
427 }
428
OnProcessMessage(CFWL_Message * pMessage)429 void CFWL_ComboBox::OnProcessMessage(CFWL_Message* pMessage) {
430 if (!pMessage)
431 return;
432
433 bool backDefault = true;
434 switch (pMessage->GetType()) {
435 case CFWL_Message::Type::SetFocus: {
436 backDefault = false;
437 OnFocusChanged(pMessage, true);
438 break;
439 }
440 case CFWL_Message::Type::KillFocus: {
441 backDefault = false;
442 OnFocusChanged(pMessage, false);
443 break;
444 }
445 case CFWL_Message::Type::Mouse: {
446 backDefault = false;
447 CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage);
448 switch (pMsg->m_dwCmd) {
449 case FWL_MouseCommand::LeftButtonDown:
450 OnLButtonDown(pMsg);
451 break;
452 case FWL_MouseCommand::LeftButtonUp:
453 OnLButtonUp(pMsg);
454 break;
455 default:
456 break;
457 }
458 break;
459 }
460 case CFWL_Message::Type::Key: {
461 backDefault = false;
462 CFWL_MessageKey* pKey = static_cast<CFWL_MessageKey*>(pMessage);
463 if (pKey->m_dwCmd == FWL_KeyCommand::KeyUp)
464 break;
465 if (IsDropListVisible() && pKey->m_dwCmd == FWL_KeyCommand::KeyDown) {
466 bool bListKey = pKey->m_dwKeyCode == XFA_FWL_VKEY_Up ||
467 pKey->m_dwKeyCode == XFA_FWL_VKEY_Down ||
468 pKey->m_dwKeyCode == XFA_FWL_VKEY_Return ||
469 pKey->m_dwKeyCode == XFA_FWL_VKEY_Escape;
470 if (bListKey) {
471 m_pListBox->GetDelegate()->OnProcessMessage(pMessage);
472 break;
473 }
474 }
475 OnKey(pKey);
476 break;
477 }
478 default:
479 break;
480 }
481 // Dst target could be |this|, continue only if not destroyed by above.
482 if (backDefault && pMessage->GetDstTarget())
483 CFWL_Widget::OnProcessMessage(pMessage);
484 }
485
OnProcessEvent(CFWL_Event * pEvent)486 void CFWL_ComboBox::OnProcessEvent(CFWL_Event* pEvent) {
487 CFWL_Event::Type type = pEvent->GetType();
488 if (type == CFWL_Event::Type::Scroll) {
489 CFWL_EventScroll* pScrollEvent = static_cast<CFWL_EventScroll*>(pEvent);
490 CFWL_EventScroll pScrollEv(this);
491 pScrollEv.m_iScrollCode = pScrollEvent->m_iScrollCode;
492 pScrollEv.m_fPos = pScrollEvent->m_fPos;
493 DispatchEvent(&pScrollEv);
494 } else if (type == CFWL_Event::Type::TextWillChange) {
495 CFWL_Event pTemp(CFWL_Event::Type::EditChanged, this);
496 DispatchEvent(&pTemp);
497 }
498 }
499
OnDrawWidget(CXFA_Graphics * pGraphics,const CFX_Matrix & matrix)500 void CFWL_ComboBox::OnDrawWidget(CXFA_Graphics* pGraphics,
501 const CFX_Matrix& matrix) {
502 DrawWidget(pGraphics, matrix);
503 }
504
OnLButtonUp(CFWL_MessageMouse * pMsg)505 void CFWL_ComboBox::OnLButtonUp(CFWL_MessageMouse* pMsg) {
506 if (m_rtBtn.Contains(pMsg->m_pos))
507 m_iBtnState = CFWL_PartState_Hovered;
508 else
509 m_iBtnState = CFWL_PartState_Normal;
510
511 RepaintRect(m_rtBtn);
512 }
513
OnLButtonDown(CFWL_MessageMouse * pMsg)514 void CFWL_ComboBox::OnLButtonDown(CFWL_MessageMouse* pMsg) {
515 bool bDropDown = IsDropListVisible();
516 CFX_RectF& rtBtn = bDropDown ? m_rtBtn : m_rtClient;
517 if (!rtBtn.Contains(pMsg->m_pos))
518 return;
519
520 if (IsDropListVisible()) {
521 ShowDropList(false);
522 return;
523 }
524 if (m_pEdit)
525 MatchEditText();
526 ShowDropList(true);
527 }
528
OnFocusChanged(CFWL_Message * pMsg,bool bSet)529 void CFWL_ComboBox::OnFocusChanged(CFWL_Message* pMsg, bool bSet) {
530 if (bSet) {
531 m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
532 if ((m_pEdit->GetStates() & FWL_WGTSTATE_Focused) == 0) {
533 CFWL_MessageSetFocus msg(nullptr, m_pEdit.get());
534 m_pEdit->GetDelegate()->OnProcessMessage(&msg);
535 }
536 } else {
537 m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
538 ShowDropList(false);
539 CFWL_MessageKillFocus msg(m_pEdit.get());
540 m_pEdit->GetDelegate()->OnProcessMessage(&msg);
541 }
542 }
543
OnKey(CFWL_MessageKey * pMsg)544 void CFWL_ComboBox::OnKey(CFWL_MessageKey* pMsg) {
545 uint32_t dwKeyCode = pMsg->m_dwKeyCode;
546 const bool bUp = dwKeyCode == XFA_FWL_VKEY_Up;
547 const bool bDown = dwKeyCode == XFA_FWL_VKEY_Down;
548 if (bUp || bDown) {
549 CFWL_ComboList* pComboList = m_pListBox.get();
550 int32_t iCount = pComboList->CountItems(nullptr);
551 if (iCount < 1)
552 return;
553
554 bool bMatchEqual = false;
555 int32_t iCurSel = m_iCurSel;
556 if (m_pEdit) {
557 WideString wsText = m_pEdit->GetText();
558 iCurSel = pComboList->MatchItem(wsText.AsStringView());
559 if (iCurSel >= 0) {
560 CFWL_ListItem* item = m_pListBox->GetSelItem(iCurSel);
561 bMatchEqual = wsText == (item ? item->GetText() : WideString());
562 }
563 }
564 if (iCurSel < 0) {
565 iCurSel = 0;
566 } else if (bMatchEqual) {
567 if ((bUp && iCurSel == 0) || (bDown && iCurSel == iCount - 1))
568 return;
569 if (bUp)
570 iCurSel--;
571 else
572 iCurSel++;
573 }
574 m_iCurSel = iCurSel;
575 SyncEditText(m_iCurSel);
576 return;
577 }
578 if (m_pEdit)
579 m_pEdit->GetDelegate()->OnProcessMessage(pMsg);
580 }
581
GetPopupPos(float fMinHeight,float fMaxHeight,const CFX_RectF & rtAnchor,CFX_RectF * pPopupRect)582 void CFWL_ComboBox::GetPopupPos(float fMinHeight,
583 float fMaxHeight,
584 const CFX_RectF& rtAnchor,
585 CFX_RectF* pPopupRect) {
586 m_pWidgetMgr->GetAdapterPopupPos(this, fMinHeight, fMaxHeight, rtAnchor,
587 pPopupRect);
588 }
589