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/formfiller/cffl_combobox.h"
8
9 #include "fpdfsdk/cpdfsdk_formfillenvironment.h"
10 #include "fpdfsdk/cpdfsdk_widget.h"
11 #include "fpdfsdk/formfiller/cba_fontmap.h"
12 #include "fpdfsdk/formfiller/cffl_interactiveformfiller.h"
13 #include "fpdfsdk/fsdk_common.h"
14 #include "fpdfsdk/pwl/cpwl_combo_box.h"
15 #include "third_party/base/ptr_util.h"
16
CFFL_ComboBox(CPDFSDK_FormFillEnvironment * pApp,CPDFSDK_Widget * pWidget)17 CFFL_ComboBox::CFFL_ComboBox(CPDFSDK_FormFillEnvironment* pApp,
18 CPDFSDK_Widget* pWidget)
19 : CFFL_TextObject(pApp, pWidget) {
20 m_State.nIndex = 0;
21 m_State.nStart = 0;
22 m_State.nEnd = 0;
23 }
24
~CFFL_ComboBox()25 CFFL_ComboBox::~CFFL_ComboBox() {
26 for (const auto& it : m_Maps)
27 it.second->InvalidateFocusHandler(this);
28
29 // See comment in cffl_formfiller.h.
30 // The font map should be stored somewhere more appropriate so it will live
31 // until the PWL_Edit is done with it. pdfium:566
32 DestroyWindows();
33 }
34
GetCreateParam()35 CPWL_Wnd::CreateParams CFFL_ComboBox::GetCreateParam() {
36 CPWL_Wnd::CreateParams cp = CFFL_TextObject::GetCreateParam();
37 if (m_pWidget->GetFieldFlags() & FIELDFLAG_EDIT)
38 cp.dwFlags |= PCBS_ALLOWCUSTOMTEXT;
39
40 cp.pFontMap = MaybeCreateFontMap();
41 cp.pFocusHandler = this;
42 return cp;
43 }
44
NewPDFWindow(const CPWL_Wnd::CreateParams & cp)45 CPWL_Wnd* CFFL_ComboBox::NewPDFWindow(const CPWL_Wnd::CreateParams& cp) {
46 auto* pWnd = new CPWL_ComboBox();
47 pWnd->AttachFFLData(this);
48 pWnd->Create(cp);
49
50 CFFL_InteractiveFormFiller* pFormFiller =
51 m_pFormFillEnv->GetInteractiveFormFiller();
52 pWnd->SetFillerNotify(pFormFiller);
53
54 int32_t nCurSel = m_pWidget->GetSelectedIndex(0);
55 WideString swText;
56 if (nCurSel < 0)
57 swText = m_pWidget->GetValue();
58 else
59 swText = m_pWidget->GetOptionLabel(nCurSel);
60
61 for (int32_t i = 0, sz = m_pWidget->CountOptions(); i < sz; i++) {
62 pWnd->AddString(m_pWidget->GetOptionLabel(i));
63 }
64
65 pWnd->SetSelect(nCurSel);
66 pWnd->SetText(swText);
67 return pWnd;
68 }
69
OnChar(CPDFSDK_Annot * pAnnot,uint32_t nChar,uint32_t nFlags)70 bool CFFL_ComboBox::OnChar(CPDFSDK_Annot* pAnnot,
71 uint32_t nChar,
72 uint32_t nFlags) {
73 return CFFL_TextObject::OnChar(pAnnot, nChar, nFlags);
74 }
75
IsDataChanged(CPDFSDK_PageView * pPageView)76 bool CFFL_ComboBox::IsDataChanged(CPDFSDK_PageView* pPageView) {
77 CPWL_ComboBox* pWnd = (CPWL_ComboBox*)GetPDFWindow(pPageView, false);
78 if (!pWnd)
79 return false;
80
81 int32_t nCurSel = pWnd->GetSelect();
82 if (!(m_pWidget->GetFieldFlags() & FIELDFLAG_EDIT))
83 return nCurSel != m_pWidget->GetSelectedIndex(0);
84
85 if (nCurSel >= 0)
86 return nCurSel != m_pWidget->GetSelectedIndex(0);
87
88 return pWnd->GetText() != m_pWidget->GetValue();
89 }
90
SaveData(CPDFSDK_PageView * pPageView)91 void CFFL_ComboBox::SaveData(CPDFSDK_PageView* pPageView) {
92 CPWL_ComboBox* pWnd =
93 static_cast<CPWL_ComboBox*>(GetPDFWindow(pPageView, false));
94 if (!pWnd)
95 return;
96
97 WideString swText = pWnd->GetText();
98 int32_t nCurSel = pWnd->GetSelect();
99
100 bool bSetValue = false;
101
102 if (m_pWidget->GetFieldFlags() & FIELDFLAG_EDIT)
103 bSetValue = (nCurSel < 0) || (swText != m_pWidget->GetOptionLabel(nCurSel));
104
105 if (bSetValue) {
106 m_pWidget->SetValue(swText, false);
107 } else {
108 m_pWidget->GetSelectedIndex(0);
109 m_pWidget->SetOptionSelection(nCurSel, true, false);
110 }
111 CPDFSDK_Widget::ObservedPtr observed_widget(m_pWidget.Get());
112 CFFL_ComboBox::ObservedPtr observed_this(this);
113
114 m_pWidget->ResetFieldAppearance(true);
115 if (!observed_widget)
116 return;
117 m_pWidget->UpdateField();
118 if (!observed_widget || !observed_this)
119 return;
120 SetChangeMark();
121 m_pWidget->GetPDFPage();
122 }
123
GetActionData(CPDFSDK_PageView * pPageView,CPDF_AAction::AActionType type,PDFSDK_FieldAction & fa)124 void CFFL_ComboBox::GetActionData(CPDFSDK_PageView* pPageView,
125 CPDF_AAction::AActionType type,
126 PDFSDK_FieldAction& fa) {
127 switch (type) {
128 case CPDF_AAction::KeyStroke:
129 if (CPWL_ComboBox* pComboBox =
130 static_cast<CPWL_ComboBox*>(GetPDFWindow(pPageView, false))) {
131 if (CPWL_Edit* pEdit = pComboBox->GetEdit()) {
132 fa.bFieldFull = pEdit->IsTextFull();
133 int nSelStart = 0;
134 int nSelEnd = 0;
135 pEdit->GetSelection(nSelStart, nSelEnd);
136 fa.nSelEnd = nSelEnd;
137 fa.nSelStart = nSelStart;
138 fa.sValue = pEdit->GetText();
139 fa.sChangeEx = GetSelectExportText();
140
141 if (fa.bFieldFull) {
142 fa.sChange = L"";
143 fa.sChangeEx = L"";
144 }
145 }
146 }
147 break;
148 case CPDF_AAction::Validate:
149 if (CPWL_ComboBox* pComboBox =
150 static_cast<CPWL_ComboBox*>(GetPDFWindow(pPageView, false))) {
151 if (CPWL_Edit* pEdit = pComboBox->GetEdit()) {
152 fa.sValue = pEdit->GetText();
153 }
154 }
155 break;
156 case CPDF_AAction::LoseFocus:
157 case CPDF_AAction::GetFocus:
158 fa.sValue = m_pWidget->GetValue();
159 break;
160 default:
161 break;
162 }
163 }
164
SetActionData(CPDFSDK_PageView * pPageView,CPDF_AAction::AActionType type,const PDFSDK_FieldAction & fa)165 void CFFL_ComboBox::SetActionData(CPDFSDK_PageView* pPageView,
166 CPDF_AAction::AActionType type,
167 const PDFSDK_FieldAction& fa) {
168 switch (type) {
169 case CPDF_AAction::KeyStroke:
170 if (CPWL_ComboBox* pComboBox =
171 static_cast<CPWL_ComboBox*>(GetPDFWindow(pPageView, false))) {
172 if (CPWL_Edit* pEdit = pComboBox->GetEdit()) {
173 pEdit->SetSelection(fa.nSelStart, fa.nSelEnd);
174 pEdit->ReplaceSel(fa.sChange);
175 }
176 }
177 break;
178 default:
179 break;
180 }
181 }
182
IsActionDataChanged(CPDF_AAction::AActionType type,const PDFSDK_FieldAction & faOld,const PDFSDK_FieldAction & faNew)183 bool CFFL_ComboBox::IsActionDataChanged(CPDF_AAction::AActionType type,
184 const PDFSDK_FieldAction& faOld,
185 const PDFSDK_FieldAction& faNew) {
186 switch (type) {
187 case CPDF_AAction::KeyStroke:
188 return (!faOld.bFieldFull && faOld.nSelEnd != faNew.nSelEnd) ||
189 faOld.nSelStart != faNew.nSelStart ||
190 faOld.sChange != faNew.sChange;
191 default:
192 break;
193 }
194
195 return false;
196 }
197
SaveState(CPDFSDK_PageView * pPageView)198 void CFFL_ComboBox::SaveState(CPDFSDK_PageView* pPageView) {
199 ASSERT(pPageView);
200
201 if (CPWL_ComboBox* pComboBox =
202 static_cast<CPWL_ComboBox*>(GetPDFWindow(pPageView, false))) {
203 m_State.nIndex = pComboBox->GetSelect();
204
205 if (CPWL_Edit* pEdit = pComboBox->GetEdit()) {
206 pEdit->GetSelection(m_State.nStart, m_State.nEnd);
207 m_State.sValue = pEdit->GetText();
208 }
209 }
210 }
211
RestoreState(CPDFSDK_PageView * pPageView)212 void CFFL_ComboBox::RestoreState(CPDFSDK_PageView* pPageView) {
213 ASSERT(pPageView);
214
215 if (CPWL_ComboBox* pComboBox =
216 static_cast<CPWL_ComboBox*>(GetPDFWindow(pPageView, true))) {
217 if (m_State.nIndex >= 0) {
218 pComboBox->SetSelect(m_State.nIndex);
219 } else {
220 if (CPWL_Edit* pEdit = pComboBox->GetEdit()) {
221 pEdit->SetText(m_State.sValue);
222 pEdit->SetSelection(m_State.nStart, m_State.nEnd);
223 }
224 }
225 }
226 }
227
228 #ifdef PDF_ENABLE_XFA
IsFieldFull(CPDFSDK_PageView * pPageView)229 bool CFFL_ComboBox::IsFieldFull(CPDFSDK_PageView* pPageView) {
230 if (CPWL_ComboBox* pComboBox =
231 static_cast<CPWL_ComboBox*>(GetPDFWindow(pPageView, false))) {
232 if (CPWL_Edit* pEdit = pComboBox->GetEdit())
233 return pEdit->IsTextFull();
234 }
235 return false;
236 }
237 #endif // PDF_ENABLE_XFA
238
OnSetFocus(CPWL_Edit * pEdit)239 void CFFL_ComboBox::OnSetFocus(CPWL_Edit* pEdit) {
240 pEdit->SetCharSet(FX_CHARSET_ChineseSimplified);
241 pEdit->SetReadyToInput();
242
243 WideString wsText = pEdit->GetText();
244 int nCharacters = wsText.GetLength();
245 ByteString bsUTFText = wsText.UTF16LE_Encode();
246 auto* pBuffer = reinterpret_cast<const unsigned short*>(bsUTFText.c_str());
247 m_pFormFillEnv->OnSetFieldInputFocus(pBuffer, nCharacters, true);
248 }
249
GetSelectExportText()250 WideString CFFL_ComboBox::GetSelectExportText() {
251 WideString swRet;
252
253 int nExport = -1;
254 CPDFSDK_PageView* pPageView = GetCurPageView(true);
255 if (CPWL_ComboBox* pComboBox =
256 (CPWL_ComboBox*)GetPDFWindow(pPageView, false)) {
257 nExport = pComboBox->GetSelect();
258 }
259
260 if (nExport >= 0) {
261 if (CPDF_FormField* pFormField = m_pWidget->GetFormField()) {
262 swRet = pFormField->GetOptionValue(nExport);
263 if (swRet.IsEmpty())
264 swRet = pFormField->GetOptionLabel(nExport);
265 }
266 }
267
268 return swRet;
269 }
270