1 | // |
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2 | // Element.cpp |
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3 | // |
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4 | // $Id: //poco/1.3/XML/src/Element.cpp#2 $ |
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5 | // |
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6 | // Library: XML |
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7 | // Package: DOM |
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8 | // Module: DOM |
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9 | // |
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10 | // Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH. |
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11 | // and Contributors. |
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12 | // |
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13 | // Permission is hereby granted, free of charge, to any person or organization |
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14 | // obtaining a copy of the software and accompanying documentation covered by |
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15 | // this license (the "Software") to use, reproduce, display, distribute, |
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16 | // execute, and transmit the Software, and to prepare derivative works of the |
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17 | // Software, and to permit third-parties to whom the Software is furnished to |
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18 | // do so, all subject to the following: |
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19 | // |
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20 | // The copyright notices in the Software and this entire statement, including |
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21 | // the above license grant, this restriction and the following disclaimer, |
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22 | // must be included in all copies of the Software, in whole or in part, and |
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23 | // all derivative works of the Software, unless such copies or derivative |
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24 | // works are solely in the form of machine-executable object code generated by |
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25 | // a source language processor. |
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26 | // |
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27 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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28 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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29 | // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
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30 | // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
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31 | // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
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32 | // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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33 | // DEALINGS IN THE SOFTWARE. |
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34 | // |
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35 | |
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36 | |
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37 | #include <Poco/DOM/Element.h> |
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38 | #include <Poco/DOM/Document.h> |
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39 | #include <Poco/DOM/Attr.h> |
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40 | #include <Poco/DOM/DOMException.h> |
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41 | #include <Poco/DOM/ElementsByTagNameList.h> |
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42 | #include <Poco/DOM/Text.h> |
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43 | #include <Poco/DOM/AttrMap.h> |
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44 | |
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45 | |
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46 | namespace Poco { |
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47 | namespace XML { |
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48 | |
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49 | |
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50 | Element::Element(Document* pOwnerDocument, const XMLString& namespaceURI, const XMLString& localName, const XMLString& qname): |
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51 | AbstractContainerNode(pOwnerDocument), |
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52 | _name(pOwnerDocument->namePool().insert(qname, namespaceURI, localName)), |
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53 | _pFirstAttr(0) |
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54 | { |
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55 | } |
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56 | |
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57 | |
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58 | Element::Element(Document* pOwnerDocument, const Element& element): |
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59 | AbstractContainerNode(pOwnerDocument, element), |
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60 | _name(pOwnerDocument->namePool().insert(element._name)), |
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61 | _pFirstAttr(0) |
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62 | { |
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63 | Attr* pAttr = element._pFirstAttr; |
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64 | while (pAttr) |
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65 | { |
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66 | Attr* pClonedAttr = static_cast<Attr*>(pAttr->copyNode(false, pOwnerDocument)); |
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67 | setAttributeNode(pClonedAttr); |
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68 | pClonedAttr->release(); |
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69 | pAttr = static_cast<Attr*>(pAttr->_pNext); |
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70 | } |
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71 | } |
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72 | |
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73 | |
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74 | Element::~Element() |
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75 | { |
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76 | if (_pFirstAttr) _pFirstAttr->release(); |
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77 | } |
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78 | |
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79 | |
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80 | const XMLString& Element::getAttribute(const XMLString& name) const |
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81 | { |
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82 | Attr* pAttr = getAttributeNode(name); |
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83 | if (pAttr) |
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84 | return pAttr->getValue(); |
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85 | else |
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86 | return EMPTY_STRING; |
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87 | } |
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88 | |
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89 | |
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90 | void Element::setAttribute(const XMLString& name, const XMLString& value) |
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91 | { |
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92 | Attr* pAttr = getAttributeNode(name); |
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93 | if (pAttr) |
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94 | { |
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95 | pAttr->setValue(value); |
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96 | } |
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97 | else |
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98 | { |
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99 | pAttr = ownerDocument()->createAttribute(name); |
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100 | pAttr->setValue(value); |
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101 | setAttributeNode(pAttr); |
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102 | pAttr->release(); |
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103 | } |
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104 | } |
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105 | |
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106 | |
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107 | void Element::removeAttribute(const XMLString& name) |
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108 | { |
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109 | Attr* pAttr = getAttributeNode(name); |
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110 | if (pAttr) removeAttributeNode(pAttr); |
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111 | } |
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112 | |
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113 | |
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114 | Attr* Element::getAttributeNode(const XMLString& name) const |
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115 | { |
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116 | Attr* pAttr = _pFirstAttr; |
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117 | while (pAttr && pAttr->_name.qname() != name) pAttr = static_cast<Attr*>(pAttr->_pNext); |
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118 | return pAttr; |
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119 | } |
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120 | |
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121 | |
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122 | Attr* Element::setAttributeNode(Attr* newAttr) |
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123 | { |
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124 | poco_check_ptr (newAttr); |
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125 | |
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126 | if (newAttr->ownerDocument() != ownerDocument()) |
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127 | throw DOMException(DOMException::WRONG_DOCUMENT_ERR); |
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128 | if (newAttr->ownerElement()) |
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129 | throw DOMException(DOMException::INUSE_ATTRIBUTE_ERR); |
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130 | |
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131 | Attr* oldAttr = getAttributeNode(newAttr->name()); |
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132 | if (oldAttr) removeAttributeNode(oldAttr); |
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133 | |
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134 | Attr* pCur = _pFirstAttr; |
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135 | if (pCur) |
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136 | { |
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137 | while (pCur->_pNext) pCur = static_cast<Attr*>(pCur->_pNext); |
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138 | pCur->_pNext = newAttr; |
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139 | } |
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140 | else _pFirstAttr = newAttr; |
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141 | newAttr->duplicate(); |
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142 | newAttr->_pParent = this; |
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143 | if (_pOwner->events()) |
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144 | dispatchAttrModified(newAttr, MutationEvent::ADDITION, EMPTY_STRING, newAttr->getValue()); |
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145 | |
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146 | return oldAttr; |
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147 | } |
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148 | |
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149 | |
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150 | Attr* Element::removeAttributeNode(Attr* oldAttr) |
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151 | { |
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152 | poco_check_ptr (oldAttr); |
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153 | |
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154 | if (_pOwner->events()) |
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155 | dispatchAttrModified(oldAttr, MutationEvent::REMOVAL, oldAttr->getValue(), EMPTY_STRING); |
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156 | |
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157 | if (oldAttr != _pFirstAttr) |
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158 | { |
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159 | Attr* pCur = _pFirstAttr; |
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160 | while (pCur->_pNext != oldAttr) pCur = static_cast<Attr*>(pCur->_pNext); |
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161 | if (pCur) |
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162 | { |
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163 | pCur->_pNext = static_cast<Attr*>(pCur->_pNext->_pNext); |
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164 | } |
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165 | else throw DOMException(DOMException::NOT_FOUND_ERR); |
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166 | } |
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167 | else _pFirstAttr = static_cast<Attr*>(_pFirstAttr->_pNext); |
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168 | oldAttr->_pNext = 0; |
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169 | oldAttr->_pParent = 0; |
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170 | oldAttr->autoRelease(); |
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171 | |
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172 | return oldAttr; |
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173 | } |
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174 | |
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175 | |
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176 | Attr* Element::addAttributeNodeNP(Attr* oldAttr, Attr* newAttr) |
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177 | { |
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178 | newAttr->_pParent = this; |
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179 | if (oldAttr) |
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180 | { |
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181 | oldAttr->_pNext = newAttr; |
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182 | } |
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183 | else if (_pFirstAttr) |
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184 | { |
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185 | newAttr->_pNext = _pFirstAttr; |
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186 | _pFirstAttr = newAttr; |
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187 | } |
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188 | else |
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189 | { |
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190 | _pFirstAttr = newAttr; |
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191 | } |
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192 | newAttr->duplicate(); |
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193 | return newAttr; |
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194 | } |
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195 | |
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196 | |
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197 | NodeList* Element::getElementsByTagName(const XMLString& name) const |
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198 | { |
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199 | return new ElementsByTagNameList(this, name); |
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200 | } |
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201 | |
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202 | |
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203 | NodeList* Element::getElementsByTagNameNS(const XMLString& namespaceURI, const XMLString& localName) const |
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204 | { |
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205 | return new ElementsByTagNameListNS(this, namespaceURI, localName); |
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206 | } |
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207 | |
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208 | |
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209 | void Element::normalize() |
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210 | { |
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211 | Node* pCur = firstChild(); |
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212 | while (pCur) |
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213 | { |
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214 | if (pCur->nodeType() == Node::ELEMENT_NODE) |
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215 | { |
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216 | pCur->normalize(); |
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217 | } |
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218 | else if (pCur->nodeType() == Node::TEXT_NODE) |
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219 | { |
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220 | Node* pNext = pCur->nextSibling(); |
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221 | while (pNext && pNext->nodeType() == Node::TEXT_NODE) |
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222 | { |
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223 | static_cast<Text*>(pCur)->appendData(pNext->nodeValue()); |
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224 | removeChild(pNext); |
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225 | pNext = pCur->nextSibling(); |
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226 | } |
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227 | } |
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228 | pCur = pCur->nextSibling(); |
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229 | } |
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230 | } |
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231 | |
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232 | |
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233 | const XMLString& Element::nodeName() const |
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234 | { |
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235 | return tagName(); |
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236 | } |
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237 | |
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238 | |
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239 | NamedNodeMap* Element::attributes() const |
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240 | { |
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241 | return new AttrMap(const_cast<Element*>(this)); |
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242 | } |
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243 | |
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244 | |
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245 | unsigned short Element::nodeType() const |
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246 | { |
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247 | return Node::ELEMENT_NODE; |
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248 | } |
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249 | |
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250 | |
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251 | const XMLString& Element::getAttributeNS(const XMLString& namespaceURI, const XMLString& localName) const |
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252 | { |
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253 | Attr* pAttr = getAttributeNodeNS(namespaceURI, localName); |
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254 | if (pAttr) |
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255 | return pAttr->getValue(); |
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256 | else |
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257 | return EMPTY_STRING; |
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258 | } |
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259 | |
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260 | |
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261 | void Element::setAttributeNS(const XMLString& namespaceURI, const XMLString& qualifiedName, const XMLString& value) |
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262 | { |
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263 | Attr* pAttr = getAttributeNodeNS(namespaceURI, qualifiedName); |
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264 | if (pAttr) |
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265 | { |
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266 | pAttr->setValue(value); |
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267 | } |
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268 | else |
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269 | { |
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270 | pAttr = _pOwner->createAttributeNS(namespaceURI, qualifiedName); |
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271 | pAttr->setValue(value); |
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272 | setAttributeNodeNS(pAttr); |
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273 | pAttr->release(); |
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274 | } |
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275 | } |
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276 | |
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277 | |
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278 | void Element::removeAttributeNS(const XMLString& namespaceURI, const XMLString& localName) |
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279 | { |
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280 | Attr* pAttr = getAttributeNodeNS(namespaceURI, localName); |
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281 | if (pAttr) removeAttributeNode(pAttr); |
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282 | } |
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283 | |
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284 | |
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285 | Attr* Element::getAttributeNodeNS(const XMLString& namespaceURI, const XMLString& localName) const |
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286 | { |
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287 | Attr* pAttr = _pFirstAttr; |
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288 | while (pAttr && (pAttr->_name.namespaceURI() != namespaceURI || pAttr->_name.localName() != localName)) pAttr = static_cast<Attr*>(pAttr->_pNext); |
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289 | return pAttr; |
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290 | } |
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291 | |
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292 | |
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293 | Attr* Element::setAttributeNodeNS(Attr* newAttr) |
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294 | { |
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295 | poco_check_ptr (newAttr); |
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296 | |
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297 | if (newAttr->ownerDocument() != ownerDocument()) |
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298 | throw DOMException(DOMException::WRONG_DOCUMENT_ERR); |
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299 | if (newAttr->ownerElement()) |
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300 | throw DOMException(DOMException::INUSE_ATTRIBUTE_ERR); |
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301 | |
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302 | Attr* oldAttr = getAttributeNodeNS(newAttr->namespaceURI(), newAttr->localName()); |
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303 | if (oldAttr) removeAttributeNode(oldAttr); |
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304 | |
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305 | Attr* pCur = _pFirstAttr; |
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306 | if (pCur) |
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307 | { |
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308 | while (pCur->_pNext) pCur = static_cast<Attr*>(pCur->_pNext); |
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309 | pCur->_pNext = newAttr; |
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310 | } |
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311 | else _pFirstAttr = newAttr; |
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312 | newAttr->_pParent = this; |
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313 | newAttr->duplicate(); |
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314 | if (_pOwner->events()) |
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315 | dispatchAttrModified(newAttr, MutationEvent::ADDITION, EMPTY_STRING, newAttr->getValue()); |
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316 | |
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317 | return oldAttr; |
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318 | } |
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319 | |
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320 | |
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321 | bool Element::hasAttribute(const XMLString& name) const |
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322 | { |
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323 | return getAttributeNode(name) != 0; |
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324 | } |
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325 | |
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326 | |
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327 | bool Element::hasAttributeNS(const XMLString& namespaceURI, const XMLString& localName) const |
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328 | { |
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329 | return getAttributeNodeNS(namespaceURI, localName) != 0; |
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330 | } |
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331 | |
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332 | |
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333 | const XMLString& Element::namespaceURI() const |
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334 | { |
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335 | return _name.namespaceURI(); |
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336 | } |
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337 | |
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338 | |
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339 | XMLString Element::prefix() const |
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340 | { |
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341 | return _name.prefix(); |
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342 | } |
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343 | |
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344 | |
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345 | const XMLString& Element::localName() const |
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346 | { |
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347 | return _name.localName(); |
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348 | } |
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349 | |
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350 | |
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351 | bool Element::hasAttributes() const |
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352 | { |
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353 | return _pFirstAttr != 0; |
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354 | } |
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355 | |
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356 | |
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357 | XMLString Element::innerText() const |
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358 | { |
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359 | XMLString result; |
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360 | Node* pChild = firstChild(); |
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361 | while (pChild) |
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362 | { |
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363 | result.append(pChild->innerText()); |
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364 | pChild = pChild->nextSibling(); |
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365 | } |
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366 | return result; |
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367 | } |
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368 | |
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369 | |
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370 | Element* Element::getChildElement(const XMLString& name) const |
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371 | { |
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372 | Node* pNode = firstChild(); |
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373 | while (pNode && !(pNode->nodeType() == Node::ELEMENT_NODE && pNode->nodeName() == name)) |
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374 | pNode = pNode->nextSibling(); |
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375 | return static_cast<Element*>(pNode); |
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376 | } |
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377 | |
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378 | |
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379 | Element* Element::getChildElementNS(const XMLString& namespaceURI, const XMLString& localName) const |
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380 | { |
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381 | Node* pNode = firstChild(); |
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382 | while (pNode && !(pNode->nodeType() == Node::ELEMENT_NODE && pNode->namespaceURI() == namespaceURI && pNode->localName() == localName)) |
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383 | pNode = pNode->nextSibling(); |
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384 | return static_cast<Element*>(pNode); |
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385 | } |
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386 | |
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387 | |
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388 | void Element::dispatchNodeRemovedFromDocument() |
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389 | { |
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390 | AbstractContainerNode::dispatchNodeRemovedFromDocument(); |
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391 | Attr* pAttr = _pFirstAttr; |
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392 | while (pAttr) |
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393 | { |
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394 | pAttr->dispatchNodeRemovedFromDocument(); |
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395 | pAttr = static_cast<Attr*>(pAttr->_pNext); |
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396 | } |
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397 | } |
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398 | |
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399 | |
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400 | void Element::dispatchNodeInsertedIntoDocument() |
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401 | { |
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402 | AbstractContainerNode::dispatchNodeInsertedIntoDocument(); |
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403 | Attr* pAttr = _pFirstAttr; |
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404 | while (pAttr) |
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405 | { |
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406 | pAttr->dispatchNodeInsertedIntoDocument(); |
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407 | pAttr = static_cast<Attr*>(pAttr->_pNext); |
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408 | } |
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409 | } |
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410 | |
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411 | |
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412 | Node* Element::copyNode(bool deep, Document* pOwnerDocument) const |
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413 | { |
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414 | Element* pClone = new Element(pOwnerDocument, *this); |
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415 | if (deep) |
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416 | { |
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417 | Node* pNode = firstChild(); |
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418 | while (pNode) |
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419 | { |
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420 | pClone->appendChild(static_cast<AbstractNode*>(pNode)->copyNode(true, pOwnerDocument))->release(); |
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421 | pNode = pNode->nextSibling(); |
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422 | } |
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423 | } |
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424 | return pClone; |
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425 | } |
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426 | |
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427 | |
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428 | Element* Element::getElementById(const XMLString& elementId, const XMLString& idAttribute) const |
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429 | { |
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430 | if (getAttribute(idAttribute) == elementId) |
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431 | return const_cast<Element*>(this); |
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432 | |
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433 | Node* pNode = firstChild(); |
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434 | while (pNode) |
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435 | { |
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436 | if (pNode->nodeType() == Node::ELEMENT_NODE) |
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437 | { |
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438 | Element* pResult = static_cast<Element*>(pNode)->getElementById(elementId, idAttribute); |
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439 | if (pResult) return pResult; |
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440 | } |
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441 | pNode = pNode->nextSibling(); |
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442 | } |
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443 | return 0; |
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444 | } |
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445 | |
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446 | |
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447 | Element* Element::getElementByIdNS(const XMLString& elementId, const XMLString& idAttributeURI, const XMLString& idAttributeLocalName) const |
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448 | { |
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449 | if (getAttributeNS(idAttributeURI, idAttributeLocalName) == elementId) |
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450 | return const_cast<Element*>(this); |
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451 | |
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452 | Node* pNode = firstChild(); |
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453 | while (pNode) |
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454 | { |
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455 | if (pNode->nodeType() == Node::ELEMENT_NODE) |
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456 | { |
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457 | Element* pResult = static_cast<Element*>(pNode)->getElementByIdNS(elementId, idAttributeURI, idAttributeLocalName); |
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458 | if (pResult) return pResult; |
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459 | } |
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460 | pNode = pNode->nextSibling(); |
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461 | } |
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462 | return 0; |
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463 | } |
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464 | |
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465 | |
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466 | } } // namespace Poco::XML |
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