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				|  |  |  <?php
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				|  |  | +
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				|  |  | +class data__sequence_checksum_widget extends TripalFieldWidget {
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				|  |  | +  // The default lable for this field.
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				|  |  | +  public static $label = 'Sequence MD5 checksum';
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				|  |  | +
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				|  |  | +  // The list of field types for which this formatter is appropriate.
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				|  |  | +  public static $field_types = array('no_widget');
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				|  |  | +
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				|  |  | +
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				|  |  | +  /**
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				|  |  | +   * 
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				|  |  | +   * @param unknown $field
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				|  |  | +   * @param unknown $instance
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				|  |  | +   */
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				|  |  | +  public function __construct($field, $instance = NULL) {
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				|  |  | +    $this->field = $field;
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				|  |  | +    $this->instance = $instance;
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				|  |  | +  }
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				|  |  | +
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				|  |  | +  /**
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				|  |  | +   * 
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				|  |  | +   * @see TripalFieldWidget::form()
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				|  |  | +   */
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				|  |  | +  public function form(&$widget, &$form, &$form_state, $langcode, $items, $delta, $element) {
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				|  |  | +    parent::widgetForm($widget, $form, $form_state, $langcode, $items, $delta, $element);
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				|  |  | +    
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				|  |  | +    $settings = $this->field['settings'];
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				|  |  | +    $field_name = $this->field['field_name'];
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				|  |  | +    $field_type = $this->field['type'];
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				|  |  | +    $field_table = $this->field['settings']['chado_table'];
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				|  |  | +    $field_column = $this->field['settings']['chado_column'];
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				|  |  | +    
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				|  |  | +    // Get the field defaults.
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				|  |  | +    $md5checksum = '';
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				|  |  | +    if (count($items) > 0 and array_key_exists('chado-feature__md5checksum', $items[0])) {
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				|  |  | +      $md5checksum = $items[0]['chado-feature__md5checksum'];
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				|  |  | +    }
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				|  |  | +    
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				|  |  | +    $widget['value'] = array(
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				|  |  | +      '#type' => 'value',
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				|  |  | +      '#value' => $md5checksum,
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				|  |  | +    );
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				|  |  | +    $widget['chado-feature__md5checksum'] = array(
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				|  |  | +      '#type' => 'value',
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				|  |  | +      '#value' => $md5checksum,
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				|  |  | +    );
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				|  |  | +  }
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				|  |  | +
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				|  |  | +  /**
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				|  |  | +   * Performs validation of the widgetForm.
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				|  |  | +   *
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				|  |  | +   * Use this validate to ensure that form values are entered correctly.  Note
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				|  |  | +   * this is different from the validate() function which ensures that the
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				|  |  | +   * field data meets expectations.
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				|  |  | +   *
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				|  |  | +   * @param $form
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				|  |  | +   * @param $form_state
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				|  |  | +   */
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				|  |  | +  public function validate($form, &$form_state, $entity_type, $entity, $langcode, $delta) {
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				|  |  | +
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				|  |  | +  }
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				|  |  | +
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				|  |  | +
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				|  |  | +  /**
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				|  |  | +   * 
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				|  |  | +   * @see TripalFieldWidget::submit()
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				|  |  | +   */
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				|  |  | +  public function submit($form, &$form_state, $entity_type, $entity, $langcode, $delta) {
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				|  |  | +    $field = $this->field;
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				|  |  | +    $settings = $field['settings'];
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				|  |  | +    $field_name = $field['field_name'];
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				|  |  | +    $field_type = $field['type'];
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				|  |  | +    $field_table = $field['settings']['chado_table'];
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				|  |  | +    $field_column = $field['settings']['chado_column'];
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				|  |  | +    
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				|  |  | +    // Get the residues so we can calculate teh length.
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				|  |  | +    $residues = isset($form_state['values']['feature__residues'][$langcode][0]['chado-feature__residues']) ? $form_state['values']['feature__residues'][$langcode][0]['chado-feature__residues'] : '';
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				|  |  | +    
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				|  |  | +    if ($residues) {
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				|  |  | +      // Remove spaces and new lines from the residues string.
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				|  |  | +      $residues = preg_replace('/\s/', '', $residues);
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				|  |  | +      $form_state['values']['feature__residues'][$langcode][0]['chado-feature__residues'] = $residues;
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				|  |  | +      $form_state['values'][$field_name][$langcode][$delta]['chado-feature__md5checksum'] = md5($residues);
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				|  |  | +    }
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				|  |  | +    else {
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				|  |  | +      // Otherwise, remove the md5 value
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				|  |  | +      $form_state['values'][$field_name][$langcode][$delta]['chado-feature__md5checksum'] = '__NULL__';
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				|  |  | +    }
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				|  |  | +  }
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				|  |  | +}
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