1 // Copyright 2017 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 "fxjs/xfa/cjx_list.h"
8
9 #include "core/fxcrt/numerics/safe_conversions.h"
10 #include "core/fxcrt/span.h"
11 #include "fxjs/fxv8.h"
12 #include "fxjs/js_resources.h"
13 #include "fxjs/xfa/cfxjse_class.h"
14 #include "fxjs/xfa/cfxjse_engine.h"
15 #include "v8/include/v8-object.h"
16 #include "v8/include/v8-primitive.h"
17 #include "xfa/fxfa/parser/cxfa_document.h"
18 #include "xfa/fxfa/parser/cxfa_list.h"
19 #include "xfa/fxfa/parser/cxfa_node.h"
20
21 const CJX_MethodSpec CJX_List::MethodSpecs[] = {{"append", append_static},
22 {"insert", insert_static},
23 {"item", item_static},
24 {"remove", remove_static}};
25
CJX_List(CXFA_List * list)26 CJX_List::CJX_List(CXFA_List* list) : CJX_Object(list) {
27 DefineMethods(MethodSpecs);
28 }
29
30 CJX_List::~CJX_List() = default;
31
DynamicTypeIs(TypeTag eType) const32 bool CJX_List::DynamicTypeIs(TypeTag eType) const {
33 return eType == static_type__ || ParentType__::DynamicTypeIs(eType);
34 }
35
GetXFAList()36 CXFA_List* CJX_List::GetXFAList() {
37 return ToList(GetXFAObject());
38 }
39
append(CFXJSE_Engine * runtime,pdfium::span<v8::Local<v8::Value>> params)40 CJS_Result CJX_List::append(CFXJSE_Engine* runtime,
41 pdfium::span<v8::Local<v8::Value>> params) {
42 if (params.size() != 1)
43 return CJS_Result::Failure(JSMessage::kParamError);
44
45 auto* pNode = ToNode(runtime->ToXFAObject(params[0]));
46 if (!pNode)
47 return CJS_Result::Failure(JSMessage::kValueError);
48
49 if (!GetXFAList()->Append(pNode))
50 return CJS_Result::Failure(JSMessage::kWouldBeCyclic);
51
52 return CJS_Result::Success();
53 }
54
insert(CFXJSE_Engine * runtime,pdfium::span<v8::Local<v8::Value>> params)55 CJS_Result CJX_List::insert(CFXJSE_Engine* runtime,
56 pdfium::span<v8::Local<v8::Value>> params) {
57 if (params.size() != 2)
58 return CJS_Result::Failure(JSMessage::kParamError);
59
60 auto* pNewNode = ToNode(runtime->ToXFAObject(params[0]));
61 if (!pNewNode)
62 return CJS_Result::Failure(JSMessage::kValueError);
63
64 auto* pBeforeNode = ToNode(runtime->ToXFAObject(params[1]));
65 if (!GetXFAList()->Insert(pNewNode, pBeforeNode))
66 return CJS_Result::Failure(JSMessage::kValueError);
67
68 return CJS_Result::Success();
69 }
70
remove(CFXJSE_Engine * runtime,pdfium::span<v8::Local<v8::Value>> params)71 CJS_Result CJX_List::remove(CFXJSE_Engine* runtime,
72 pdfium::span<v8::Local<v8::Value>> params) {
73 if (params.size() != 1)
74 return CJS_Result::Failure(JSMessage::kParamError);
75
76 auto* pNode = ToNode(runtime->ToXFAObject(params[0]));
77 if (!pNode)
78 return CJS_Result::Failure(JSMessage::kValueError);
79
80 GetXFAList()->Remove(pNode);
81 return CJS_Result::Success();
82 }
83
item(CFXJSE_Engine * runtime,pdfium::span<v8::Local<v8::Value>> params)84 CJS_Result CJX_List::item(CFXJSE_Engine* runtime,
85 pdfium::span<v8::Local<v8::Value>> params) {
86 if (params.size() != 1)
87 return CJS_Result::Failure(JSMessage::kParamError);
88
89 int32_t index = runtime->ToInt32(params[0]);
90 size_t cast_index = static_cast<size_t>(index);
91 if (index < 0 || cast_index >= GetXFAList()->GetLength())
92 return CJS_Result::Failure(JSMessage::kInvalidInputError);
93
94 return CJS_Result::Success(
95 runtime->NewNormalXFAObject(GetXFAList()->Item(cast_index)));
96 }
97
length(v8::Isolate * pIsolate,v8::Local<v8::Value> * pValue,bool bSetting,XFA_Attribute eAttribute)98 void CJX_List::length(v8::Isolate* pIsolate,
99 v8::Local<v8::Value>* pValue,
100 bool bSetting,
101 XFA_Attribute eAttribute) {
102 if (bSetting) {
103 ThrowInvalidPropertyException(pIsolate);
104 return;
105 }
106 *pValue = fxv8::NewNumberHelper(
107 pIsolate, pdfium::checked_cast<int32_t>(GetXFAList()->GetLength()));
108 }
109