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 "fpdfsdk/pdfwindow/PWL_ComboBox.h"
8 
9 #include "core/fxge/cfx_pathdata.h"
10 #include "core/fxge/cfx_renderdevice.h"
11 #include "fpdfsdk/fxedit/fxet_list.h"
12 #include "fpdfsdk/pdfwindow/PWL_Edit.h"
13 #include "fpdfsdk/pdfwindow/PWL_EditCtrl.h"
14 #include "fpdfsdk/pdfwindow/PWL_ListBox.h"
15 #include "fpdfsdk/pdfwindow/PWL_Utils.h"
16 #include "fpdfsdk/pdfwindow/PWL_Wnd.h"
17 #include "public/fpdf_fwlevent.h"
18 
19 #define PWLCB_DEFAULTFONTSIZE 12.0f
20 
OnLButtonUp(const CFX_PointF & point,uint32_t nFlag)21 bool CPWL_CBListBox::OnLButtonUp(const CFX_PointF& point, uint32_t nFlag) {
22   CPWL_Wnd::OnLButtonUp(point, nFlag);
23 
24   if (!m_bMouseDown)
25     return true;
26 
27   ReleaseCapture();
28   m_bMouseDown = false;
29 
30   if (!ClientHitTest(point))
31     return true;
32   if (CPWL_Wnd* pParent = GetParentWindow())
33     pParent->OnNotify(this, PNM_LBUTTONUP, 0, PWL_MAKEDWORD(point.x, point.y));
34 
35   bool bExit = false;
36   OnNotifySelChanged(false, bExit, nFlag);
37 
38   return !bExit;
39 }
40 
OnKeyDownWithExit(uint16_t nChar,bool & bExit,uint32_t nFlag)41 bool CPWL_CBListBox::OnKeyDownWithExit(uint16_t nChar,
42                                        bool& bExit,
43                                        uint32_t nFlag) {
44   switch (nChar) {
45     case FWL_VKEY_Up:
46     case FWL_VKEY_Down:
47     case FWL_VKEY_Home:
48     case FWL_VKEY_Left:
49     case FWL_VKEY_End:
50     case FWL_VKEY_Right:
51       break;
52     default:
53       return false;
54   }
55 
56   switch (nChar) {
57     case FWL_VKEY_Up:
58       m_pList->OnVK_UP(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
59       break;
60     case FWL_VKEY_Down:
61       m_pList->OnVK_DOWN(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
62       break;
63     case FWL_VKEY_Home:
64       m_pList->OnVK_HOME(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
65       break;
66     case FWL_VKEY_Left:
67       m_pList->OnVK_LEFT(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
68       break;
69     case FWL_VKEY_End:
70       m_pList->OnVK_END(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
71       break;
72     case FWL_VKEY_Right:
73       m_pList->OnVK_RIGHT(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
74       break;
75     case FWL_VKEY_Delete:
76       break;
77   }
78 
79   OnNotifySelChanged(true, bExit, nFlag);
80 
81   return true;
82 }
83 
OnCharWithExit(uint16_t nChar,bool & bExit,uint32_t nFlag)84 bool CPWL_CBListBox::OnCharWithExit(uint16_t nChar,
85                                     bool& bExit,
86                                     uint32_t nFlag) {
87   if (!m_pList->OnChar(nChar, IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)))
88     return false;
89   if (CPWL_ComboBox* pComboBox = (CPWL_ComboBox*)GetParentWindow())
90     pComboBox->SetSelectText();
91 
92   OnNotifySelChanged(true, bExit, nFlag);
93 
94   return true;
95 }
96 
GetThisAppearanceStream(CFX_ByteTextBuf & sAppStream)97 void CPWL_CBButton::GetThisAppearanceStream(CFX_ByteTextBuf& sAppStream) {
98   CPWL_Wnd::GetThisAppearanceStream(sAppStream);
99 
100   CFX_FloatRect rectWnd = CPWL_Wnd::GetWindowRect();
101 
102   if (IsVisible() && !rectWnd.IsEmpty()) {
103     CFX_ByteTextBuf sButton;
104 
105     CFX_PointF ptCenter = GetCenterPoint();
106 
107     CFX_PointF pt1(ptCenter.x - PWL_CBBUTTON_TRIANGLE_HALFLEN,
108                    ptCenter.y + PWL_CBBUTTON_TRIANGLE_HALFLEN * 0.5f);
109     CFX_PointF pt2(ptCenter.x + PWL_CBBUTTON_TRIANGLE_HALFLEN,
110                    ptCenter.y + PWL_CBBUTTON_TRIANGLE_HALFLEN * 0.5f);
111     CFX_PointF pt3(ptCenter.x,
112                    ptCenter.y - PWL_CBBUTTON_TRIANGLE_HALFLEN * 0.5f);
113 
114     if (IsFloatBigger(rectWnd.right - rectWnd.left,
115                       PWL_CBBUTTON_TRIANGLE_HALFLEN * 2) &&
116         IsFloatBigger(rectWnd.top - rectWnd.bottom,
117                       PWL_CBBUTTON_TRIANGLE_HALFLEN)) {
118       sButton << "0 g\n";
119       sButton << pt1.x << " " << pt1.y << " m\n";
120       sButton << pt2.x << " " << pt2.y << " l\n";
121       sButton << pt3.x << " " << pt3.y << " l\n";
122       sButton << pt1.x << " " << pt1.y << " l f\n";
123 
124       sAppStream << "q\n" << sButton << "Q\n";
125     }
126   }
127 }
128 
DrawThisAppearance(CFX_RenderDevice * pDevice,CFX_Matrix * pUser2Device)129 void CPWL_CBButton::DrawThisAppearance(CFX_RenderDevice* pDevice,
130                                        CFX_Matrix* pUser2Device) {
131   CPWL_Wnd::DrawThisAppearance(pDevice, pUser2Device);
132 
133   CFX_FloatRect rectWnd = CPWL_Wnd::GetWindowRect();
134 
135   if (IsVisible() && !rectWnd.IsEmpty()) {
136     CFX_PointF ptCenter = GetCenterPoint();
137 
138     CFX_PointF pt1(ptCenter.x - PWL_CBBUTTON_TRIANGLE_HALFLEN,
139                    ptCenter.y + PWL_CBBUTTON_TRIANGLE_HALFLEN * 0.5f);
140     CFX_PointF pt2(ptCenter.x + PWL_CBBUTTON_TRIANGLE_HALFLEN,
141                    ptCenter.y + PWL_CBBUTTON_TRIANGLE_HALFLEN * 0.5f);
142     CFX_PointF pt3(ptCenter.x,
143                    ptCenter.y - PWL_CBBUTTON_TRIANGLE_HALFLEN * 0.5f);
144 
145     if (IsFloatBigger(rectWnd.right - rectWnd.left,
146                       PWL_CBBUTTON_TRIANGLE_HALFLEN * 2) &&
147         IsFloatBigger(rectWnd.top - rectWnd.bottom,
148                       PWL_CBBUTTON_TRIANGLE_HALFLEN)) {
149       CFX_PathData path;
150       path.AppendPoint(pt1, FXPT_TYPE::MoveTo, false);
151       path.AppendPoint(pt2, FXPT_TYPE::LineTo, false);
152       path.AppendPoint(pt3, FXPT_TYPE::LineTo, false);
153       path.AppendPoint(pt1, FXPT_TYPE::LineTo, false);
154 
155       pDevice->DrawPath(&path, pUser2Device, nullptr,
156                         PWL_DEFAULT_BLACKCOLOR.ToFXColor(GetTransparency()), 0,
157                         FXFILL_ALTERNATE);
158     }
159   }
160 }
161 
OnLButtonDown(const CFX_PointF & point,uint32_t nFlag)162 bool CPWL_CBButton::OnLButtonDown(const CFX_PointF& point, uint32_t nFlag) {
163   CPWL_Wnd::OnLButtonDown(point, nFlag);
164 
165   SetCapture();
166 
167   if (CPWL_Wnd* pParent = GetParentWindow()) {
168     pParent->OnNotify(this, PNM_LBUTTONDOWN, 0,
169                       PWL_MAKEDWORD(point.x, point.y));
170   }
171 
172   return true;
173 }
174 
OnLButtonUp(const CFX_PointF & point,uint32_t nFlag)175 bool CPWL_CBButton::OnLButtonUp(const CFX_PointF& point, uint32_t nFlag) {
176   CPWL_Wnd::OnLButtonUp(point, nFlag);
177 
178   ReleaseCapture();
179 
180   return true;
181 }
182 
CPWL_ComboBox()183 CPWL_ComboBox::CPWL_ComboBox()
184     : m_pEdit(nullptr),
185       m_pButton(nullptr),
186       m_pList(nullptr),
187       m_bPopup(false),
188       m_nPopupWhere(0),
189       m_nSelectItem(-1),
190       m_pFillerNotify(nullptr) {}
191 
GetClassName() const192 CFX_ByteString CPWL_ComboBox::GetClassName() const {
193   return "CPWL_ComboBox";
194 }
195 
OnCreate(PWL_CREATEPARAM & cp)196 void CPWL_ComboBox::OnCreate(PWL_CREATEPARAM& cp) {
197   cp.dwFlags &= ~PWS_HSCROLL;
198   cp.dwFlags &= ~PWS_VSCROLL;
199 }
200 
SetFocus()201 void CPWL_ComboBox::SetFocus() {
202   if (m_pEdit)
203     m_pEdit->SetFocus();
204 }
205 
KillFocus()206 void CPWL_ComboBox::KillFocus() {
207   SetPopup(false);
208   CPWL_Wnd::KillFocus();
209 }
210 
GetText() const211 CFX_WideString CPWL_ComboBox::GetText() const {
212   if (m_pEdit) {
213     return m_pEdit->GetText();
214   }
215   return CFX_WideString();
216 }
217 
SetText(const CFX_WideString & text)218 void CPWL_ComboBox::SetText(const CFX_WideString& text) {
219   if (m_pEdit)
220     m_pEdit->SetText(text);
221 }
222 
AddString(const CFX_WideString & str)223 void CPWL_ComboBox::AddString(const CFX_WideString& str) {
224   if (m_pList)
225     m_pList->AddString(str);
226 }
227 
GetSelect() const228 int32_t CPWL_ComboBox::GetSelect() const {
229   return m_nSelectItem;
230 }
231 
SetSelect(int32_t nItemIndex)232 void CPWL_ComboBox::SetSelect(int32_t nItemIndex) {
233   if (m_pList)
234     m_pList->Select(nItemIndex);
235 
236   m_pEdit->SetText(m_pList->GetText());
237   m_nSelectItem = nItemIndex;
238 }
239 
SetEditSel(int32_t nStartChar,int32_t nEndChar)240 void CPWL_ComboBox::SetEditSel(int32_t nStartChar, int32_t nEndChar) {
241   if (m_pEdit)
242     m_pEdit->SetSel(nStartChar, nEndChar);
243 }
244 
GetEditSel(int32_t & nStartChar,int32_t & nEndChar) const245 void CPWL_ComboBox::GetEditSel(int32_t& nStartChar, int32_t& nEndChar) const {
246   nStartChar = -1;
247   nEndChar = -1;
248 
249   if (m_pEdit)
250     m_pEdit->GetSel(nStartChar, nEndChar);
251 }
252 
Clear()253 void CPWL_ComboBox::Clear() {
254   if (m_pEdit)
255     m_pEdit->Clear();
256 }
257 
CreateChildWnd(const PWL_CREATEPARAM & cp)258 void CPWL_ComboBox::CreateChildWnd(const PWL_CREATEPARAM& cp) {
259   CreateEdit(cp);
260   CreateButton(cp);
261   CreateListBox(cp);
262 }
263 
CreateEdit(const PWL_CREATEPARAM & cp)264 void CPWL_ComboBox::CreateEdit(const PWL_CREATEPARAM& cp) {
265   if (!m_pEdit) {
266     m_pEdit = new CPWL_CBEdit;
267     m_pEdit->AttachFFLData(m_pFormFiller);
268 
269     PWL_CREATEPARAM ecp = cp;
270     ecp.pParentWnd = this;
271     ecp.dwFlags = PWS_VISIBLE | PWS_CHILD | PWS_BORDER | PES_CENTER |
272                   PES_AUTOSCROLL | PES_UNDO;
273 
274     if (HasFlag(PWS_AUTOFONTSIZE))
275       ecp.dwFlags |= PWS_AUTOFONTSIZE;
276 
277     if (!HasFlag(PCBS_ALLOWCUSTOMTEXT))
278       ecp.dwFlags |= PWS_READONLY;
279 
280     ecp.rcRectWnd = CFX_FloatRect(0, 0, 0, 0);
281     ecp.dwBorderWidth = 0;
282     ecp.nBorderStyle = BorderStyle::SOLID;
283 
284     m_pEdit->Create(ecp);
285   }
286 }
287 
CreateButton(const PWL_CREATEPARAM & cp)288 void CPWL_ComboBox::CreateButton(const PWL_CREATEPARAM& cp) {
289   if (!m_pButton) {
290     m_pButton = new CPWL_CBButton;
291 
292     PWL_CREATEPARAM bcp = cp;
293     bcp.pParentWnd = this;
294     bcp.dwFlags = PWS_VISIBLE | PWS_CHILD | PWS_BORDER | PWS_BACKGROUND;
295     bcp.sBackgroundColor = PWL_SCROLLBAR_BKCOLOR;
296     bcp.sBorderColor = PWL_DEFAULT_BLACKCOLOR;
297     bcp.dwBorderWidth = 2;
298     bcp.nBorderStyle = BorderStyle::BEVELED;
299     bcp.eCursorType = FXCT_ARROW;
300 
301     m_pButton->Create(bcp);
302   }
303 }
304 
CreateListBox(const PWL_CREATEPARAM & cp)305 void CPWL_ComboBox::CreateListBox(const PWL_CREATEPARAM& cp) {
306   if (!m_pList) {
307     m_pList = new CPWL_CBListBox;
308     m_pList->AttachFFLData(m_pFormFiller);
309     PWL_CREATEPARAM lcp = cp;
310     lcp.pParentWnd = this;
311     lcp.dwFlags =
312         PWS_CHILD | PWS_BORDER | PWS_BACKGROUND | PLBS_HOVERSEL | PWS_VSCROLL;
313     lcp.nBorderStyle = BorderStyle::SOLID;
314     lcp.dwBorderWidth = 1;
315     lcp.eCursorType = FXCT_ARROW;
316     lcp.rcRectWnd = CFX_FloatRect(0, 0, 0, 0);
317 
318     if (cp.dwFlags & PWS_AUTOFONTSIZE)
319       lcp.fFontSize = PWLCB_DEFAULTFONTSIZE;
320     else
321       lcp.fFontSize = cp.fFontSize;
322 
323     if (cp.sBorderColor.nColorType == COLORTYPE_TRANSPARENT)
324       lcp.sBorderColor = PWL_DEFAULT_BLACKCOLOR;
325 
326     if (cp.sBackgroundColor.nColorType == COLORTYPE_TRANSPARENT)
327       lcp.sBackgroundColor = PWL_DEFAULT_WHITECOLOR;
328 
329     m_pList->Create(lcp);
330   }
331 }
332 
RePosChildWnd()333 void CPWL_ComboBox::RePosChildWnd() {
334   CFX_FloatRect rcClient = GetClientRect();
335 
336   if (m_bPopup) {
337     CFX_FloatRect rclient = GetClientRect();
338     CFX_FloatRect rcButton = rclient;
339     CFX_FloatRect rcEdit = rcClient;
340     CFX_FloatRect rcList = CPWL_Wnd::GetWindowRect();
341 
342     FX_FLOAT fOldWindowHeight = m_rcOldWindow.Height();
343     FX_FLOAT fOldClientHeight = fOldWindowHeight - GetBorderWidth() * 2;
344 
345     switch (m_nPopupWhere) {
346       case 0:
347         rcButton.left = rcButton.right - PWL_COMBOBOX_BUTTON_WIDTH;
348 
349         if (rcButton.left < rclient.left)
350           rcButton.left = rclient.left;
351 
352         rcButton.bottom = rcButton.top - fOldClientHeight;
353 
354         rcEdit.right = rcButton.left - 1.0f;
355 
356         if (rcEdit.left < rclient.left)
357           rcEdit.left = rclient.left;
358 
359         if (rcEdit.right < rcEdit.left)
360           rcEdit.right = rcEdit.left;
361 
362         rcEdit.bottom = rcEdit.top - fOldClientHeight;
363 
364         rcList.top -= fOldWindowHeight;
365 
366         break;
367       case 1:
368         rcButton.left = rcButton.right - PWL_COMBOBOX_BUTTON_WIDTH;
369 
370         if (rcButton.left < rclient.left)
371           rcButton.left = rclient.left;
372 
373         rcButton.top = rcButton.bottom + fOldClientHeight;
374 
375         rcEdit.right = rcButton.left - 1.0f;
376 
377         if (rcEdit.left < rclient.left)
378           rcEdit.left = rclient.left;
379 
380         if (rcEdit.right < rcEdit.left)
381           rcEdit.right = rcEdit.left;
382 
383         rcEdit.top = rcEdit.bottom + fOldClientHeight;
384 
385         rcList.bottom += fOldWindowHeight;
386 
387         break;
388     }
389 
390     if (m_pButton)
391       m_pButton->Move(rcButton, true, false);
392 
393     if (m_pEdit)
394       m_pEdit->Move(rcEdit, true, false);
395 
396     if (m_pList) {
397       m_pList->SetVisible(true);
398       m_pList->Move(rcList, true, false);
399       m_pList->ScrollToListItem(m_nSelectItem);
400     }
401   } else {
402     CFX_FloatRect rcButton = rcClient;
403 
404     rcButton.left = rcButton.right - PWL_COMBOBOX_BUTTON_WIDTH;
405 
406     if (rcButton.left < rcClient.left)
407       rcButton.left = rcClient.left;
408 
409     if (m_pButton)
410       m_pButton->Move(rcButton, true, false);
411 
412     CFX_FloatRect rcEdit = rcClient;
413     rcEdit.right = rcButton.left - 1.0f;
414 
415     if (rcEdit.left < rcClient.left)
416       rcEdit.left = rcClient.left;
417 
418     if (rcEdit.right < rcEdit.left)
419       rcEdit.right = rcEdit.left;
420 
421     if (m_pEdit)
422       m_pEdit->Move(rcEdit, true, false);
423 
424     if (m_pList)
425       m_pList->SetVisible(false);
426   }
427 }
428 
SelectAll()429 void CPWL_ComboBox::SelectAll() {
430   if (m_pEdit && HasFlag(PCBS_ALLOWCUSTOMTEXT))
431     m_pEdit->SelectAll();
432 }
433 
GetFocusRect() const434 CFX_FloatRect CPWL_ComboBox::GetFocusRect() const {
435   return CFX_FloatRect();
436 }
437 
SetPopup(bool bPopup)438 void CPWL_ComboBox::SetPopup(bool bPopup) {
439   if (!m_pList)
440     return;
441   if (bPopup == m_bPopup)
442     return;
443   FX_FLOAT fListHeight = m_pList->GetContentRect().Height();
444   if (!IsFloatBigger(fListHeight, 0.0f))
445     return;
446 
447   if (bPopup) {
448     if (m_pFillerNotify) {
449 #ifdef PDF_ENABLE_XFA
450       bool bExit = false;
451       m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), bExit, 0);
452       if (bExit)
453         return;
454 #endif  // PDF_ENABLE_XFA
455       int32_t nWhere = 0;
456       FX_FLOAT fPopupRet = 0.0f;
457       FX_FLOAT fPopupMin = 0.0f;
458       if (m_pList->GetCount() > 3)
459         fPopupMin =
460             m_pList->GetFirstHeight() * 3 + m_pList->GetBorderWidth() * 2;
461       FX_FLOAT fPopupMax = fListHeight + m_pList->GetBorderWidth() * 2;
462       m_pFillerNotify->QueryWherePopup(GetAttachedData(), fPopupMin, fPopupMax,
463                                        nWhere, fPopupRet);
464 
465       if (IsFloatBigger(fPopupRet, 0.0f)) {
466         m_bPopup = bPopup;
467 
468         CFX_FloatRect rcWindow = CPWL_Wnd::GetWindowRect();
469         m_rcOldWindow = rcWindow;
470         switch (nWhere) {
471           default:
472           case 0:
473             rcWindow.bottom -= fPopupRet;
474             break;
475           case 1:
476             rcWindow.top += fPopupRet;
477             break;
478         }
479 
480         m_nPopupWhere = nWhere;
481         Move(rcWindow, true, true);
482 #ifdef PDF_ENABLE_XFA
483         bExit = false;
484         m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), bExit, 0);
485         if (bExit)
486           return;
487 #endif  // PDF_ENABLE_XFA
488       }
489     }
490   } else {
491     m_bPopup = bPopup;
492     Move(m_rcOldWindow, true, true);
493   }
494 }
495 
OnKeyDown(uint16_t nChar,uint32_t nFlag)496 bool CPWL_ComboBox::OnKeyDown(uint16_t nChar, uint32_t nFlag) {
497   if (!m_pList)
498     return false;
499   if (!m_pEdit)
500     return false;
501 
502   m_nSelectItem = -1;
503 
504   switch (nChar) {
505     case FWL_VKEY_Up:
506       if (m_pList->GetCurSel() > 0) {
507         bool bExit = false;
508 #ifdef PDF_ENABLE_XFA
509         if (m_pFillerNotify) {
510           m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), bExit, nFlag);
511           if (bExit)
512             return false;
513           bExit = false;
514           m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), bExit, nFlag);
515           if (bExit)
516             return false;
517         }
518 #endif  // PDF_ENABLE_XFA
519         if (m_pList->OnKeyDownWithExit(nChar, bExit, nFlag)) {
520           if (bExit)
521             return false;
522           SetSelectText();
523         }
524       }
525       return true;
526     case FWL_VKEY_Down:
527       if (m_pList->GetCurSel() < m_pList->GetCount() - 1) {
528         bool bExit = false;
529 #ifdef PDF_ENABLE_XFA
530         if (m_pFillerNotify) {
531           m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), bExit, nFlag);
532           if (bExit)
533             return false;
534           bExit = false;
535           m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), bExit, nFlag);
536           if (bExit)
537             return false;
538         }
539 #endif  // PDF_ENABLE_XFA
540         if (m_pList->OnKeyDownWithExit(nChar, bExit, nFlag)) {
541           if (bExit)
542             return false;
543           SetSelectText();
544         }
545       }
546       return true;
547   }
548 
549   if (HasFlag(PCBS_ALLOWCUSTOMTEXT))
550     return m_pEdit->OnKeyDown(nChar, nFlag);
551 
552   return false;
553 }
554 
OnChar(uint16_t nChar,uint32_t nFlag)555 bool CPWL_ComboBox::OnChar(uint16_t nChar, uint32_t nFlag) {
556   if (!m_pList)
557     return false;
558 
559   if (!m_pEdit)
560     return false;
561 
562   m_nSelectItem = -1;
563   if (HasFlag(PCBS_ALLOWCUSTOMTEXT))
564     return m_pEdit->OnChar(nChar, nFlag);
565 
566   bool bExit = false;
567 #ifdef PDF_ENABLE_XFA
568   if (m_pFillerNotify) {
569     m_pFillerNotify->OnPopupPreOpen(GetAttachedData(), bExit, nFlag);
570     if (bExit)
571       return false;
572 
573     m_pFillerNotify->OnPopupPostOpen(GetAttachedData(), bExit, nFlag);
574     if (bExit)
575       return false;
576   }
577 #endif  // PDF_ENABLE_XFA
578   return m_pList->OnCharWithExit(nChar, bExit, nFlag) ? bExit : false;
579 }
580 
OnNotify(CPWL_Wnd * pWnd,uint32_t msg,intptr_t wParam,intptr_t lParam)581 void CPWL_ComboBox::OnNotify(CPWL_Wnd* pWnd,
582                              uint32_t msg,
583                              intptr_t wParam,
584                              intptr_t lParam) {
585   switch (msg) {
586     case PNM_LBUTTONDOWN:
587       if (pWnd == m_pButton) {
588         SetPopup(!m_bPopup);
589         return;
590       }
591       break;
592     case PNM_LBUTTONUP:
593       if (m_pEdit && m_pList) {
594         if (pWnd == m_pList) {
595           SetSelectText();
596           SelectAll();
597           m_pEdit->SetFocus();
598           SetPopup(false);
599           return;
600         }
601       }
602   }
603 
604   CPWL_Wnd::OnNotify(pWnd, msg, wParam, lParam);
605 }
606 
IsPopup() const607 bool CPWL_ComboBox::IsPopup() const {
608   return m_bPopup;
609 }
610 
SetSelectText()611 void CPWL_ComboBox::SetSelectText() {
612   m_pEdit->SelectAll();
613   m_pEdit->ReplaceSel(m_pList->GetText());
614   m_pEdit->SelectAll();
615   m_nSelectItem = m_pList->GetCurSel();
616 }
617 
SetFillerNotify(IPWL_Filler_Notify * pNotify)618 void CPWL_ComboBox::SetFillerNotify(IPWL_Filler_Notify* pNotify) {
619   m_pFillerNotify = pNotify;
620 
621   if (m_pEdit)
622     m_pEdit->SetFillerNotify(pNotify);
623 
624   if (m_pList)
625     m_pList->SetFillerNotify(pNotify);
626 }
627