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_listbox.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_list_box.h"
15 #include "third_party/base/ptr_util.h"
16
17 #define FFL_DEFAULTLISTBOXFONTSIZE 12.0f
18
CFFL_ListBox(CPDFSDK_FormFillEnvironment * pApp,CPDFSDK_Widget * pWidget)19 CFFL_ListBox::CFFL_ListBox(CPDFSDK_FormFillEnvironment* pApp,
20 CPDFSDK_Widget* pWidget)
21 : CFFL_TextObject(pApp, pWidget) {}
22
~CFFL_ListBox()23 CFFL_ListBox::~CFFL_ListBox() {}
24
GetCreateParam()25 CPWL_Wnd::CreateParams CFFL_ListBox::GetCreateParam() {
26 CPWL_Wnd::CreateParams cp = CFFL_TextObject::GetCreateParam();
27 uint32_t dwFieldFlag = m_pWidget->GetFieldFlags();
28 if (dwFieldFlag & FIELDFLAG_MULTISELECT)
29 cp.dwFlags |= PLBS_MULTIPLESEL;
30
31 cp.dwFlags |= PWS_VSCROLL;
32
33 if (cp.dwFlags & PWS_AUTOFONTSIZE)
34 cp.fFontSize = FFL_DEFAULTLISTBOXFONTSIZE;
35
36 cp.pFontMap = MaybeCreateFontMap();
37 return cp;
38 }
39
NewPDFWindow(const CPWL_Wnd::CreateParams & cp)40 CPWL_Wnd* CFFL_ListBox::NewPDFWindow(const CPWL_Wnd::CreateParams& cp) {
41 auto* pWnd = new CPWL_ListBox();
42 pWnd->AttachFFLData(this);
43 pWnd->Create(cp);
44 pWnd->SetFillerNotify(m_pFormFillEnv->GetInteractiveFormFiller());
45
46 for (int32_t i = 0, sz = m_pWidget->CountOptions(); i < sz; i++)
47 pWnd->AddString(m_pWidget->GetOptionLabel(i));
48
49 if (pWnd->HasFlag(PLBS_MULTIPLESEL)) {
50 m_OriginSelections.clear();
51
52 bool bSetCaret = false;
53 for (int32_t i = 0, sz = m_pWidget->CountOptions(); i < sz; i++) {
54 if (m_pWidget->IsOptionSelected(i)) {
55 if (!bSetCaret) {
56 pWnd->SetCaret(i);
57 bSetCaret = true;
58 }
59 pWnd->Select(i);
60 m_OriginSelections.insert(i);
61 }
62 }
63 } else {
64 for (int i = 0, sz = m_pWidget->CountOptions(); i < sz; i++) {
65 if (m_pWidget->IsOptionSelected(i)) {
66 pWnd->Select(i);
67 break;
68 }
69 }
70 }
71
72 pWnd->SetTopVisibleIndex(m_pWidget->GetTopVisibleIndex());
73
74 return pWnd;
75 }
76
OnChar(CPDFSDK_Annot * pAnnot,uint32_t nChar,uint32_t nFlags)77 bool CFFL_ListBox::OnChar(CPDFSDK_Annot* pAnnot,
78 uint32_t nChar,
79 uint32_t nFlags) {
80 return CFFL_TextObject::OnChar(pAnnot, nChar, nFlags);
81 }
82
IsDataChanged(CPDFSDK_PageView * pPageView)83 bool CFFL_ListBox::IsDataChanged(CPDFSDK_PageView* pPageView) {
84 CPWL_ListBox* pListBox = (CPWL_ListBox*)GetPDFWindow(pPageView, false);
85 if (!pListBox)
86 return false;
87
88 if (m_pWidget->GetFieldFlags() & FIELDFLAG_MULTISELECT) {
89 size_t nSelCount = 0;
90 for (int32_t i = 0, sz = pListBox->GetCount(); i < sz; ++i) {
91 if (pListBox->IsItemSelected(i)) {
92 if (m_OriginSelections.count(i) == 0)
93 return true;
94
95 ++nSelCount;
96 }
97 }
98
99 return nSelCount != m_OriginSelections.size();
100 }
101 return pListBox->GetCurSel() != m_pWidget->GetSelectedIndex(0);
102 }
103
SaveData(CPDFSDK_PageView * pPageView)104 void CFFL_ListBox::SaveData(CPDFSDK_PageView* pPageView) {
105 CPWL_ListBox* pListBox =
106 static_cast<CPWL_ListBox*>(GetPDFWindow(pPageView, false));
107 if (!pListBox)
108 return;
109
110 int32_t nNewTopIndex = pListBox->GetTopVisibleIndex();
111 m_pWidget->ClearSelection(false);
112 if (m_pWidget->GetFieldFlags() & FIELDFLAG_MULTISELECT) {
113 for (int32_t i = 0, sz = pListBox->GetCount(); i < sz; i++) {
114 if (pListBox->IsItemSelected(i))
115 m_pWidget->SetOptionSelection(i, true, false);
116 }
117 } else {
118 m_pWidget->SetOptionSelection(pListBox->GetCurSel(), true, false);
119 }
120 CPDFSDK_Widget::ObservedPtr observed_widget(m_pWidget.Get());
121 CFFL_ListBox::ObservedPtr observed_this(this);
122
123 m_pWidget->SetTopVisibleIndex(nNewTopIndex);
124 if (!observed_widget)
125 return;
126 m_pWidget->ResetFieldAppearance(true);
127 if (!observed_widget)
128 return;
129 m_pWidget->UpdateField();
130 if (!observed_widget || !observed_this)
131 return;
132 SetChangeMark();
133 }
134
GetActionData(CPDFSDK_PageView * pPageView,CPDF_AAction::AActionType type,PDFSDK_FieldAction & fa)135 void CFFL_ListBox::GetActionData(CPDFSDK_PageView* pPageView,
136 CPDF_AAction::AActionType type,
137 PDFSDK_FieldAction& fa) {
138 switch (type) {
139 case CPDF_AAction::Validate:
140 if (m_pWidget->GetFieldFlags() & FIELDFLAG_MULTISELECT) {
141 fa.sValue = L"";
142 } else {
143 if (CPWL_ListBox* pListBox =
144 (CPWL_ListBox*)GetPDFWindow(pPageView, false)) {
145 int32_t nCurSel = pListBox->GetCurSel();
146 if (nCurSel >= 0)
147 fa.sValue = m_pWidget->GetOptionLabel(nCurSel);
148 }
149 }
150 break;
151 case CPDF_AAction::LoseFocus:
152 case CPDF_AAction::GetFocus:
153 if (m_pWidget->GetFieldFlags() & FIELDFLAG_MULTISELECT) {
154 fa.sValue = L"";
155 } else {
156 int32_t nCurSel = m_pWidget->GetSelectedIndex(0);
157 if (nCurSel >= 0)
158 fa.sValue = m_pWidget->GetOptionLabel(nCurSel);
159 }
160 break;
161 default:
162 break;
163 }
164 }
165
SaveState(CPDFSDK_PageView * pPageView)166 void CFFL_ListBox::SaveState(CPDFSDK_PageView* pPageView) {
167 ASSERT(pPageView);
168
169 CPWL_ListBox* pListBox =
170 static_cast<CPWL_ListBox*>(GetPDFWindow(pPageView, false));
171 if (!pListBox)
172 return;
173
174 for (int32_t i = 0, sz = pListBox->GetCount(); i < sz; i++) {
175 if (pListBox->IsItemSelected(i))
176 m_State.push_back(i);
177 }
178 }
179
RestoreState(CPDFSDK_PageView * pPageView)180 void CFFL_ListBox::RestoreState(CPDFSDK_PageView* pPageView) {
181 CPWL_ListBox* pListBox =
182 static_cast<CPWL_ListBox*>(GetPDFWindow(pPageView, false));
183 if (!pListBox)
184 return;
185
186 for (const auto& item : m_State)
187 pListBox->Select(item);
188 }
189