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1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
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2 /* vim: set ts=2 et sw=2 tw=80: */ |
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3 /* This Source Code Form is subject to the terms of the Mozilla Public |
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4 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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6 |
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7 #include "InterfaceInitFuncs.h" |
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8 |
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9 #include "Accessible-inl.h" |
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10 #include "AccessibleWrap.h" |
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11 #include "DocAccessible.h" |
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12 #include "nsMai.h" |
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13 #include "mozilla/Likely.h" |
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14 |
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15 using namespace mozilla::a11y; |
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16 |
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17 static const char* const kDocTypeName = "W3C-doctype"; |
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18 static const char* const kDocUrlName = "DocURL"; |
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19 static const char* const kMimeTypeName = "MimeType"; |
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20 |
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21 // below functions are vfuncs on an ATK interface so they need to be C call |
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22 extern "C" { |
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23 |
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24 static const gchar* getDocumentLocaleCB(AtkDocument* aDocument); |
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25 static AtkAttributeSet* getDocumentAttributesCB(AtkDocument* aDocument); |
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26 static const gchar* getDocumentAttributeValueCB(AtkDocument* aDocument, |
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27 const gchar* aAttrName); |
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28 |
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29 void |
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30 documentInterfaceInitCB(AtkDocumentIface *aIface) |
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31 { |
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32 NS_ASSERTION(aIface, "Invalid Interface"); |
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33 if(MOZ_UNLIKELY(!aIface)) |
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34 return; |
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35 |
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36 /* |
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37 * We don't support get_document or set_attribute right now. |
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38 * get_document_type is deprecated, we return DocType in |
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39 * get_document_attribute_value and get_document_attributes instead. |
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40 */ |
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41 aIface->get_document_attributes = getDocumentAttributesCB; |
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42 aIface->get_document_attribute_value = getDocumentAttributeValueCB; |
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43 aIface->get_document_locale = getDocumentLocaleCB; |
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44 } |
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45 |
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46 const gchar * |
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47 getDocumentLocaleCB(AtkDocument *aDocument) |
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48 { |
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49 AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aDocument)); |
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50 if (!accWrap) |
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51 return nullptr; |
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52 |
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53 nsAutoString locale; |
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54 accWrap->Language(locale); |
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55 return locale.IsEmpty() ? nullptr : AccessibleWrap::ReturnString(locale); |
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56 } |
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57 |
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58 static inline GSList * |
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59 prependToList(GSList *aList, const char *const aName, const nsAutoString &aValue) |
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60 { |
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61 if (aValue.IsEmpty()) |
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62 return aList; |
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63 |
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64 // libspi will free these |
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65 AtkAttribute *atkAttr = (AtkAttribute *)g_malloc(sizeof(AtkAttribute)); |
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66 atkAttr->name = g_strdup(aName); |
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67 atkAttr->value = g_strdup(NS_ConvertUTF16toUTF8(aValue).get()); |
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68 return g_slist_prepend(aList, atkAttr); |
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69 } |
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70 |
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71 AtkAttributeSet * |
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72 getDocumentAttributesCB(AtkDocument *aDocument) |
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73 { |
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74 AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aDocument)); |
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75 if (!accWrap || !accWrap->IsDoc()) |
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76 return nullptr; |
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77 |
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78 // according to atkobject.h, AtkAttributeSet is a GSList |
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79 GSList* attributes = nullptr; |
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80 DocAccessible* document = accWrap->AsDoc(); |
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81 nsAutoString aURL; |
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82 nsresult rv = document->GetURL(aURL); |
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83 if (NS_SUCCEEDED(rv)) |
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84 attributes = prependToList(attributes, kDocUrlName, aURL); |
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85 |
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86 nsAutoString aW3CDocType; |
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87 rv = document->GetDocType(aW3CDocType); |
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88 if (NS_SUCCEEDED(rv)) |
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89 attributes = prependToList(attributes, kDocTypeName, aW3CDocType); |
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90 |
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91 nsAutoString aMimeType; |
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92 rv = document->GetMimeType(aMimeType); |
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93 if (NS_SUCCEEDED(rv)) |
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94 attributes = prependToList(attributes, kMimeTypeName, aMimeType); |
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95 |
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96 return attributes; |
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97 } |
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98 |
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99 const gchar * |
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100 getDocumentAttributeValueCB(AtkDocument *aDocument, |
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101 const gchar *aAttrName) |
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102 { |
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103 AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aDocument)); |
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104 if (!accWrap || !accWrap->IsDoc()) |
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105 return nullptr; |
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106 |
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107 DocAccessible* document = accWrap->AsDoc(); |
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108 nsresult rv; |
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109 nsAutoString attrValue; |
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110 if (!strcasecmp(aAttrName, kDocTypeName)) |
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111 rv = document->GetDocType(attrValue); |
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112 else if (!strcasecmp(aAttrName, kDocUrlName)) |
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113 rv = document->GetURL(attrValue); |
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114 else if (!strcasecmp(aAttrName, kMimeTypeName)) |
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115 rv = document->GetMimeType(attrValue); |
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116 else |
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117 return nullptr; |
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118 |
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119 NS_ENSURE_SUCCESS(rv, nullptr); |
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120 return attrValue.IsEmpty() ? nullptr : AccessibleWrap::ReturnString(attrValue); |
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121 } |
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122 } |