diff options
Diffstat (limited to 'core/fpdfdoc/cpdf_formfield.cpp')
| -rw-r--r-- | core/fpdfdoc/cpdf_formfield.cpp | 91 |
1 files changed, 53 insertions, 38 deletions
diff --git a/core/fpdfdoc/cpdf_formfield.cpp b/core/fpdfdoc/cpdf_formfield.cpp index acad073b17..8dcc9e68b6 100644 --- a/core/fpdfdoc/cpdf_formfield.cpp +++ b/core/fpdfdoc/cpdf_formfield.cpp @@ -37,6 +37,8 @@ const int kFormTextPassword = 0x200; const int kFormTextNoScroll = 0x400; const int kFormTextComb = 0x800; +constexpr int kGetFieldMaxRecursion = 32; + bool IsUnison(CPDF_FormField* pField) { if (pField->GetType() == CPDF_FormField::CheckBox) return true; @@ -53,10 +55,23 @@ Optional<FormFieldType> IntToFormFieldType(int value) { return {}; } -CPDF_Object* FPDF_GetFieldAttr(const CPDF_Dictionary* pFieldDict, +const CPDF_Object* FPDF_GetFieldAttr(const CPDF_Dictionary* pFieldDict, + const char* name, + int nLevel) { + if (!pFieldDict || nLevel > kGetFieldMaxRecursion) + return nullptr; + + const CPDF_Object* pAttr = pFieldDict->GetDirectObjectFor(name); + if (pAttr) + return pAttr; + + const CPDF_Dictionary* pParent = pFieldDict->GetDictFor("Parent"); + return pParent ? FPDF_GetFieldAttr(pParent, name, nLevel + 1) : nullptr; +} + +CPDF_Object* FPDF_GetFieldAttr(CPDF_Dictionary* pFieldDict, const char* name, int nLevel) { - static constexpr int kGetFieldMaxRecursion = 32; if (!pFieldDict || nLevel > kGetFieldMaxRecursion) return nullptr; @@ -64,7 +79,7 @@ CPDF_Object* FPDF_GetFieldAttr(const CPDF_Dictionary* pFieldDict, if (pAttr) return pAttr; - const CPDF_Dictionary* pParent = pFieldDict->GetDictFor("Parent"); + CPDF_Dictionary* pParent = pFieldDict->GetDictFor("Parent"); return pParent ? FPDF_GetFieldAttr(pParent, name, nLevel + 1) : nullptr; } @@ -100,9 +115,9 @@ CPDF_FormField::CPDF_FormField(CPDF_InterForm* pForm, CPDF_Dictionary* pDict) CPDF_FormField::~CPDF_FormField() {} void CPDF_FormField::SyncFieldFlags() { - CPDF_Object* ft_attr = FPDF_GetFieldAttr(m_pDict.Get(), "FT"); + const CPDF_Object* ft_attr = FPDF_GetFieldAttr(m_pDict.Get(), "FT"); ByteString type_name = ft_attr ? ft_attr->GetString() : ByteString(); - CPDF_Object* ff_attr = FPDF_GetFieldAttr(m_pDict.Get(), "Ff"); + const CPDF_Object* ff_attr = FPDF_GetFieldAttr(m_pDict.Get(), "Ff"); uint32_t flags = ff_attr ? ff_attr->GetInteger() : 0; m_Flags = 0; if (flags & FORMFLAG_READONLY) @@ -196,17 +211,17 @@ bool CPDF_FormField::ResetField(bool bNotify) { case CPDF_FormField::RichText: case CPDF_FormField::File: default: { - CPDF_Object* pDV = FPDF_GetFieldAttr(m_pDict.Get(), "DV"); + const CPDF_Object* pDV = FPDF_GetFieldAttr(m_pDict.Get(), "DV"); WideString csDValue; if (pDV) csDValue = pDV->GetUnicodeText(); - CPDF_Object* pV = FPDF_GetFieldAttr(m_pDict.Get(), "V"); + const CPDF_Object* pV = FPDF_GetFieldAttr(m_pDict.Get(), "V"); WideString csValue; if (pV) csValue = pV->GetUnicodeText(); - CPDF_Object* pRV = FPDF_GetFieldAttr(m_pDict.Get(), "RV"); + const CPDF_Object* pRV = FPDF_GetFieldAttr(m_pDict.Get(), "RV"); if (!pRV && (csDValue == csValue)) return false; @@ -265,27 +280,27 @@ FormFieldType CPDF_FormField::GetFieldType() const { } CPDF_AAction CPDF_FormField::GetAdditionalAction() const { - CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "AA"); + const CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "AA"); return CPDF_AAction(pObj ? pObj->GetDict() : nullptr); } WideString CPDF_FormField::GetAlternateName() const { - CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "TU"); + const CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "TU"); return pObj ? pObj->GetUnicodeText() : L""; } WideString CPDF_FormField::GetMappingName() const { - CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "TM"); + const CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "TM"); return pObj ? pObj->GetUnicodeText() : L""; } uint32_t CPDF_FormField::GetFieldFlags() const { - CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "Ff"); + const CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "Ff"); return pObj ? pObj->GetInteger() : 0; } ByteString CPDF_FormField::GetDefaultStyle() const { - CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "DS"); + const CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "DS"); return pObj ? pObj->GetString() : ""; } @@ -293,7 +308,8 @@ WideString CPDF_FormField::GetValue(bool bDefault) const { if (GetType() == CheckBox || GetType() == RadioButton) return GetCheckValue(bDefault); - CPDF_Object* pValue = FPDF_GetFieldAttr(m_pDict.Get(), bDefault ? "DV" : "V"); + const CPDF_Object* pValue = + FPDF_GetFieldAttr(m_pDict.Get(), bDefault ? "DV" : "V"); if (!pValue) { if (!bDefault) { if (m_Type == RichText) @@ -394,7 +410,7 @@ bool CPDF_FormField::SetValue(const WideString& value, bool bNotify) { } int CPDF_FormField::GetMaxLen() const { - if (CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "MaxLen")) + if (const CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "MaxLen")) return pObj->GetInteger(); for (auto& pControl : m_ControlList) { @@ -408,7 +424,7 @@ int CPDF_FormField::GetMaxLen() const { } int CPDF_FormField::CountSelectedItems() const { - CPDF_Object* pValue = FPDF_GetFieldAttr(m_pDict.Get(), "V"); + const CPDF_Object* pValue = FPDF_GetFieldAttr(m_pDict.Get(), "V"); if (!pValue) { pValue = FPDF_GetFieldAttr(m_pDict.Get(), "I"); if (!pValue) @@ -417,13 +433,12 @@ int CPDF_FormField::CountSelectedItems() const { if (pValue->IsString() || pValue->IsNumber()) return pValue->GetString().IsEmpty() ? 0 : 1; - if (CPDF_Array* pArray = pValue->AsArray()) - return pArray->GetCount(); - return 0; + const CPDF_Array* pArray = pValue->AsArray(); + return pArray ? pArray->GetCount() : 0; } int CPDF_FormField::GetSelectedIndex(int index) const { - CPDF_Object* pValue = FPDF_GetFieldAttr(m_pDict.Get(), "V"); + const CPDF_Object* pValue = FPDF_GetFieldAttr(m_pDict.Get(), "V"); if (!pValue) { pValue = FPDF_GetFieldAttr(m_pDict.Get(), "I"); if (!pValue) @@ -438,11 +453,11 @@ int CPDF_FormField::GetSelectedIndex(int index) const { return -1; sel_value = pValue->GetUnicodeText(); } else { - CPDF_Array* pArray = pValue->AsArray(); + const CPDF_Array* pArray = pValue->AsArray(); if (!pArray || index < 0) return -1; - CPDF_Object* elementValue = pArray->GetDirectObjectAt(index); + const CPDF_Object* elementValue = pArray->GetDirectObjectAt(index); sel_value = elementValue ? elementValue->GetUnicodeText() : WideString(); } if (index < CountSelectedOptions()) { @@ -483,7 +498,7 @@ bool CPDF_FormField::IsItemSelected(int index) const { return true; WideString opt_value = GetOptionValue(index); - CPDF_Object* pValue = FPDF_GetFieldAttr(m_pDict.Get(), "V"); + const CPDF_Object* pValue = FPDF_GetFieldAttr(m_pDict.Get(), "V"); if (!pValue) { pValue = FPDF_GetFieldAttr(m_pDict.Get(), "I"); if (!pValue) @@ -499,7 +514,7 @@ bool CPDF_FormField::IsItemSelected(int index) const { return (pValue->GetInteger() == index); } - CPDF_Array* pArray = pValue->AsArray(); + const CPDF_Array* pArray = pValue->AsArray(); if (!pArray) return false; @@ -547,7 +562,7 @@ bool CPDF_FormField::SetItemSelection(int index, bool bSelected, bool bNotify) { pI->AddNew<CPDF_Number>(index); } } else { - CPDF_Object* pValue = FPDF_GetFieldAttr(m_pDict.Get(), "V"); + const CPDF_Object* pValue = FPDF_GetFieldAttr(m_pDict.Get(), "V"); if (pValue) { if (GetType() == ListBox) { SelectOption(index, false); @@ -586,7 +601,7 @@ bool CPDF_FormField::IsItemDefaultSelected(int index) const { int CPDF_FormField::GetDefaultSelectedItem() const { ASSERT(GetType() == ComboBox || GetType() == ListBox); - CPDF_Object* pValue = FPDF_GetFieldAttr(m_pDict.Get(), "DV"); + const CPDF_Object* pValue = FPDF_GetFieldAttr(m_pDict.Get(), "DV"); if (!pValue) return -1; WideString csDV = pValue->GetUnicodeText(); @@ -600,22 +615,22 @@ int CPDF_FormField::GetDefaultSelectedItem() const { } int CPDF_FormField::CountOptions() const { - CPDF_Array* pArray = ToArray(FPDF_GetFieldAttr(m_pDict.Get(), "Opt")); + const CPDF_Array* pArray = ToArray(FPDF_GetFieldAttr(m_pDict.Get(), "Opt")); return pArray ? pArray->GetCount() : 0; } WideString CPDF_FormField::GetOptionText(int index, int sub_index) const { - CPDF_Array* pArray = ToArray(FPDF_GetFieldAttr(m_pDict.Get(), "Opt")); + const CPDF_Array* pArray = ToArray(FPDF_GetFieldAttr(m_pDict.Get(), "Opt")); if (!pArray) return WideString(); - CPDF_Object* pOption = pArray->GetDirectObjectAt(index); + const CPDF_Object* pOption = pArray->GetDirectObjectAt(index); if (!pOption) return WideString(); - if (CPDF_Array* pOptionArray = pOption->AsArray()) + if (const CPDF_Array* pOptionArray = pOption->AsArray()) pOption = pOptionArray->GetDirectObjectAt(sub_index); - CPDF_String* pString = ToString(pOption); + const CPDF_String* pString = ToString(pOption); return pString ? pString->GetUnicodeText() : WideString(); } @@ -677,13 +692,13 @@ bool CPDF_FormField::CheckControl(int iControlIndex, } } - CPDF_Object* pOpt = FPDF_GetFieldAttr(m_pDict.Get(), "Opt"); + const CPDF_Object* pOpt = FPDF_GetFieldAttr(m_pDict.Get(), "Opt"); if (!ToArray(pOpt)) { if (bChecked) { m_pDict->SetNewFor<CPDF_Name>("V", csBExport); } else { ByteString csV; - CPDF_Object* pV = FPDF_GetFieldAttr(m_pDict.Get(), "V"); + const CPDF_Object* pV = FPDF_GetFieldAttr(m_pDict.Get(), "V"); if (pV) csV = pV->GetString(); if (csV == csBExport) @@ -733,17 +748,17 @@ bool CPDF_FormField::SetCheckValue(const WideString& value, } int CPDF_FormField::GetTopVisibleIndex() const { - CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "TI"); + const CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "TI"); return pObj ? pObj->GetInteger() : 0; } int CPDF_FormField::CountSelectedOptions() const { - CPDF_Array* pArray = ToArray(FPDF_GetFieldAttr(m_pDict.Get(), "I")); + const CPDF_Array* pArray = ToArray(FPDF_GetFieldAttr(m_pDict.Get(), "I")); return pArray ? pArray->GetCount() : 0; } int CPDF_FormField::GetSelectedOptionIndex(int index) const { - CPDF_Array* pArray = ToArray(FPDF_GetFieldAttr(m_pDict.Get(), "I")); + const CPDF_Array* pArray = ToArray(FPDF_GetFieldAttr(m_pDict.Get(), "I")); if (!pArray) return -1; @@ -754,7 +769,7 @@ int CPDF_FormField::GetSelectedOptionIndex(int index) const { } bool CPDF_FormField::IsOptionSelected(int iOptIndex) const { - CPDF_Array* pArray = ToArray(FPDF_GetFieldAttr(m_pDict.Get(), "I")); + const CPDF_Array* pArray = ToArray(FPDF_GetFieldAttr(m_pDict.Get(), "I")); if (!pArray) return false; @@ -841,7 +856,7 @@ void CPDF_FormField::LoadDA() { return; ByteString DA; - if (CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "DA")) + if (const CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict.Get(), "DA")) DA = pObj->GetString(); if (DA.IsEmpty()) |