1 // Copyright 2014 The PDFium Authors
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/fxfa/cxfa_textprovider.h"
8
9 #include "core/fxcrt/xml/cfx_xmlelement.h"
10 #include "core/fxcrt/xml/cfx_xmlnode.h"
11 #include "fxjs/xfa/cfxjse_engine.h"
12 #include "fxjs/xfa/cfxjse_value.h"
13 #include "fxjs/xfa/cjx_object.h"
14 #include "third_party/base/check.h"
15 #include "xfa/fde/cfde_textout.h"
16 #include "xfa/fxfa/cxfa_eventparam.h"
17 #include "xfa/fxfa/cxfa_ffapp.h"
18 #include "xfa/fxfa/cxfa_ffcheckbutton.h"
19 #include "xfa/fxfa/cxfa_ffdoc.h"
20 #include "xfa/fxfa/cxfa_ffdocview.h"
21 #include "xfa/fxfa/cxfa_fffield.h"
22 #include "xfa/fxfa/cxfa_ffpageview.h"
23 #include "xfa/fxfa/cxfa_ffwidget.h"
24 #include "xfa/fxfa/cxfa_fontmgr.h"
25 #include "xfa/fxfa/cxfa_fwladapterwidgetmgr.h"
26 #include "xfa/fxfa/parser/cxfa_caption.h"
27 #include "xfa/fxfa/parser/cxfa_font.h"
28 #include "xfa/fxfa/parser/cxfa_items.h"
29 #include "xfa/fxfa/parser/cxfa_localevalue.h"
30 #include "xfa/fxfa/parser/cxfa_node.h"
31 #include "xfa/fxfa/parser/cxfa_para.h"
32 #include "xfa/fxfa/parser/cxfa_value.h"
33 #include "xfa/fxfa/parser/xfa_utils.h"
34
CXFA_TextProvider(CXFA_Node * pNode,Type eType)35 CXFA_TextProvider::CXFA_TextProvider(CXFA_Node* pNode, Type eType)
36 : m_pNode(pNode), m_eType(eType) {
37 DCHECK(m_pNode);
38 }
39
40 CXFA_TextProvider::~CXFA_TextProvider() = default;
41
Trace(cppgc::Visitor * visitor) const42 void CXFA_TextProvider::Trace(cppgc::Visitor* visitor) const {
43 visitor->Trace(m_pNode);
44 }
45
GetTextNode(bool * bRichText)46 CXFA_Node* CXFA_TextProvider::GetTextNode(bool* bRichText) {
47 *bRichText = false;
48 if (m_eType == Type::kText) {
49 CXFA_Value* pValueNode =
50 m_pNode->GetChild<CXFA_Value>(0, XFA_Element::Value, false);
51 if (!pValueNode)
52 return nullptr;
53
54 CXFA_Node* pChildNode = pValueNode->GetFirstChild();
55 if (pChildNode && pChildNode->GetElementType() == XFA_Element::ExData) {
56 absl::optional<WideString> contentType =
57 pChildNode->JSObject()->TryAttribute(XFA_Attribute::ContentType,
58 false);
59 if (contentType.has_value() &&
60 contentType.value().EqualsASCII("text/html")) {
61 *bRichText = true;
62 }
63 }
64 return pChildNode;
65 }
66
67 if (m_eType == Type::kCaption) {
68 CXFA_Caption* pCaptionNode =
69 m_pNode->GetChild<CXFA_Caption>(0, XFA_Element::Caption, false);
70 if (!pCaptionNode)
71 return nullptr;
72
73 CXFA_Value* pValueNode =
74 pCaptionNode->GetChild<CXFA_Value>(0, XFA_Element::Value, false);
75 if (!pValueNode)
76 return nullptr;
77
78 CXFA_Node* pChildNode = pValueNode->GetFirstChild();
79 if (pChildNode && pChildNode->GetElementType() == XFA_Element::ExData) {
80 absl::optional<WideString> contentType =
81 pChildNode->JSObject()->TryAttribute(XFA_Attribute::ContentType,
82 false);
83 if (contentType.has_value() &&
84 contentType.value().EqualsASCII("text/html")) {
85 *bRichText = true;
86 }
87 }
88 return pChildNode;
89 }
90
91 CXFA_Items* pItemNode =
92 m_pNode->GetChild<CXFA_Items>(0, XFA_Element::Items, false);
93 if (!pItemNode)
94 return nullptr;
95
96 CXFA_Node* pNode = pItemNode->GetFirstChild();
97 while (pNode) {
98 WideString wsName = pNode->JSObject()->GetCData(XFA_Attribute::Name);
99 if (m_eType == Type::kRollover && wsName.EqualsASCII("rollover")) {
100 return pNode;
101 }
102 if (m_eType == Type::kDown && wsName.EqualsASCII("down"))
103 return pNode;
104
105 pNode = pNode->GetNextSibling();
106 }
107 return nullptr;
108 }
109
GetParaIfExists()110 CXFA_Para* CXFA_TextProvider::GetParaIfExists() {
111 if (m_eType == Type::kText)
112 return m_pNode->GetParaIfExists();
113
114 CXFA_Caption* pNode =
115 m_pNode->GetChild<CXFA_Caption>(0, XFA_Element::Caption, false);
116 return pNode->GetChild<CXFA_Para>(0, XFA_Element::Para, false);
117 }
118
GetFontIfExists()119 CXFA_Font* CXFA_TextProvider::GetFontIfExists() {
120 if (m_eType == Type::kText)
121 return m_pNode->GetFontIfExists();
122
123 CXFA_Caption* pNode =
124 m_pNode->GetChild<CXFA_Caption>(0, XFA_Element::Caption, false);
125 CXFA_Font* font = pNode->GetChild<CXFA_Font>(0, XFA_Element::Font, false);
126 return font ? font : m_pNode->GetFontIfExists();
127 }
128
IsCheckButtonAndAutoWidth() const129 bool CXFA_TextProvider::IsCheckButtonAndAutoWidth() const {
130 if (m_pNode->GetFFWidgetType() != XFA_FFWidgetType::kCheckButton)
131 return false;
132 return !m_pNode->TryWidth().has_value();
133 }
134
GetEmbeddedObj(const WideString & wsAttr) const135 absl::optional<WideString> CXFA_TextProvider::GetEmbeddedObj(
136 const WideString& wsAttr) const {
137 if (m_eType != Type::kText)
138 return absl::nullopt;
139
140 CXFA_Node* pParent = m_pNode->GetParent();
141 CXFA_Document* pDocument = m_pNode->GetDocument();
142 CXFA_Node* pIDNode = nullptr;
143 if (pParent)
144 pIDNode = pDocument->GetNodeByID(pParent, wsAttr.AsStringView());
145
146 if (!pIDNode) {
147 pIDNode = pDocument->GetNodeByID(
148 ToNode(pDocument->GetXFAObject(XFA_HASHCODE_Form)),
149 wsAttr.AsStringView());
150 }
151 if (!pIDNode || !pIDNode->IsWidgetReady())
152 return absl::nullopt;
153
154 return pIDNode->GetValue(XFA_ValuePicture::kDisplay);
155 }
156