1 | <?php |
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2 | /* For licensing terms, see /license.txt */ |
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3 | |||
4 | /** |
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5 | * Item Class. |
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6 | */ |
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7 | class CcItem implements CcIItem |
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8 | { |
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9 | public $identifier = null; |
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10 | public $identifierref = null; |
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11 | public $isvisible = null; |
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12 | public $title = null; |
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13 | public $parameters = null; |
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14 | public $childitems = null; |
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15 | private $parentItem = null; |
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16 | private $isempty = true; |
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17 | |||
18 | public function __construct($node = null, $doc = null) |
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19 | { |
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20 | if (is_object($node)) { |
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21 | $clname = get_class($node); |
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22 | if ($clname == 'CcResource') { |
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23 | $this->initNewItem(); |
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24 | $this->identifierref = $node->identifier; |
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25 | $this->title = is_string($doc) && (!empty($doc)) ? $doc : 'item'; |
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26 | } elseif ($clname == 'CcManifest') { |
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27 | $this->initNewItem(); |
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28 | $this->identifierref = $node->manifestID(); |
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29 | $this->title = is_string($doc) && (!empty($doc)) ? $doc : 'item'; |
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30 | } elseif (is_object($doc)) { |
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31 | $this->processItem($node, $doc); |
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32 | } else { |
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33 | $this->initNewItem(); |
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34 | } |
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35 | } else { |
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36 | $this->initNewItem(); |
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37 | } |
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38 | } |
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39 | |||
40 | public function attrValue(&$nod, $name, $ns = null) |
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41 | { |
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42 | return is_null($ns) ? |
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43 | ($nod->hasAttribute($name) ? $nod->getAttribute($name) : null) : |
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44 | ($nod->hasAttributeNS($ns, $name) ? $nod->getAttributeNS($ns, $name) : null); |
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45 | } |
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46 | |||
47 | public function processItem(&$node, &$doc) |
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48 | { |
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49 | $this->identifier = $this->attrValue($node, "identifier"); |
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50 | $this->structure = $this->attrValue($node, "structure"); |
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51 | $this->identifierref = $this->attrValue($node, "identifierref"); |
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52 | $atr = $this->attrValue($node, "isvisible"); |
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53 | $this->isvisible = is_null($atr) ? true : $atr; |
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54 | $nlist = $node->getElementsByTagName('title'); |
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55 | if (is_object($nlist) && ($nlist->length > 0)) { |
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56 | $this->title = $nlist->item(0)->nodeValue; |
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57 | } |
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58 | $nlist = $doc->nodeList("//imscc:item[@identifier='".$this->identifier."']/imscc:item"); |
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59 | if ($nlist->length > 0) { |
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60 | $this->childitems = []; |
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61 | foreach ($nlist as $item) { |
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62 | $key = $this->attrValue($item, "identifier"); |
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63 | $this->childitems[$key] = new CcItem($item, $doc); |
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64 | } |
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65 | } |
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66 | $this->isempty = false; |
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67 | } |
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68 | |||
69 | /** |
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70 | * Add one Child Item. |
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71 | */ |
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72 | public function addChildItem(CcIItem &$item) |
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73 | { |
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74 | if (is_null($this->childitems)) { |
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75 | $this->childitems = []; |
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76 | } |
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77 | $this->childitems[$item->identifier] = $item; |
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78 | } |
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79 | |||
80 | /** |
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81 | * Add new child Item. |
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82 | * |
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83 | * @param string $title |
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84 | * |
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85 | * @return CcIItem |
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86 | */ |
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87 | public function add_new_child_item($title = '') |
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88 | { |
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89 | $sc = new CcItem(); |
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90 | $sc->title = $title; |
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91 | $this->addChildItem($sc); |
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92 | |||
93 | return $sc; |
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94 | } |
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95 | |||
96 | public function attachResource($resource) |
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97 | { |
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98 | if ($this->hasChildItems()) { |
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99 | throw new Exception("Can not attach resource to item that contains other items!"); |
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100 | } |
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101 | $resident = null; |
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102 | if (is_string($resource)) { |
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103 | $resident = $resource; |
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104 | } elseif (is_object($resource)) { |
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105 | $clname = get_class($resource); |
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106 | if ($clname == 'CcResource') { |
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107 | $resident = $resource->identifier; |
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108 | } elseif ($clname == 'CcManifest') { |
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109 | $resident = $resource->manifestID(); |
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110 | } else { |
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111 | throw new Exception("Unable to attach resource. Invalid object."); |
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112 | } |
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113 | } |
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114 | if (is_null($resident) || (empty($resident))) { |
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115 | throw new Exception("Resource must have valid identifier!"); |
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116 | } |
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117 | $this->identifierref = $resident; |
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118 | } |
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119 | |||
120 | public function hasChildItems() |
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121 | { |
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122 | return is_array($this->childitems) && (count($this->childitems) > 0); |
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123 | } |
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124 | |||
125 | public function child_item($identifier) |
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126 | { |
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127 | return $this->hasChildItems() ? $this->childitems[$identifier] : null; |
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128 | } |
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129 | |||
130 | public function initClean() |
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131 | { |
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132 | $this->identifier = null; |
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133 | $this->isvisible = null; |
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134 | $this->title = null; |
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135 | $this->parameters = null; |
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136 | $this->childitems = null; |
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137 | $this->parentItem = null; |
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138 | $this->isempty = true; |
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139 | } |
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140 | |||
141 | public function initNewItem() |
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142 | { |
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143 | $this->identifier = CcHelpers::uuidgen('I_'); |
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144 | $this->isvisible = true; //default is true |
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145 | $this->title = null; |
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146 | $this->parameters = null; |
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147 | $this->childitems = null; |
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148 | $this->parentItem = null; |
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149 | $this->isempty = false; |
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150 | } |
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151 | } |
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152 |