class openlayers_plus_behavior_legend in OpenLayers Plus 7.3

@file A block in a corner of a map that provides information on layers

Hierarchy

• class \openlayers_behavior
  • class \openlayers_plus_behavior_legend

1 string reference to 'openlayers_plus_behavior_legend'

openlayers_plus_openlayers_behaviors in ./openlayers_plus.module

Implements hook_openlayers_behaviors().

File

behaviors/openlayers_plus_behavior_legend.inc, line 7

A block in a corner of a map that provides information on layers

class openlayers_plus_behavior_legend extends openlayers_behavior {

  /**
   * Override of options_init().
   */
  public function options_init() {
    return array(
      'layers' => array(),
    );
  }

  /**
   * Override of options_form().
   */
  public function options_form($defaults = array()) {
    $vector_layers = array();
    foreach ($this->map['layers'] as $id => $name) {
      $layer = openlayers_layer_load($id);
      if (isset($layer->data['vector']) && $layer->data['vector'] == TRUE) {
        $vector_layers[$id] = $name;
      }
    }
    $options['layers'] = array(
      '#title' => t('Layers'),
      '#type' => 'checkboxes',
      '#options' => $vector_layers,
      '#description' => t('Select layers to add legend.'),
      '#default_value' => isset($defaults['layers']) ? $defaults['layers'] : array(),
    );
    return $options;
  }

  /**
   * Render.
   */
  public function render(&$map) {
    $legend_title = null;
    drupal_add_js(drupal_get_path('module', 'openlayers_plus') . '/behaviors/openlayers_plus_behavior_legend.js');
    drupal_add_css(drupal_get_path('module', 'openlayers_plus') . '/css/openlayers_plus.css');
    $options = array();
    $styles = openlayers_styles();
    uasort($map['layers'], 'openlayers_plus_layer_compare');
    foreach ($map['layers'] as $layer => $layer_data) {
      if (isset($map['behaviors']['openlayers_plus_behavior_legend']['layers'][$layer]) && $map['behaviors']['openlayers_plus_behavior_legend']['layers'][$layer]) {
        $selected_layer_style = $map['layer_styles'][$layer];
        if ($selected_layer_style == '0') {
          $selected_layer_style = "default";
        }
        else {
          $selected_layer_style = $map['layer_styles'][$layer];
        }
        $legend = array();
        if (!empty($map['layers'][$layer]['title'])) {
          $legend_title = $map['layers'][$layer]['title'];
        }
        else {
          $legend_title = $styles[$selected_layer_style]->title;
        }
        $legend[$layer]['title'] = $legend_title;
        $legend[$layer]['data'] = $styles[$selected_layer_style]->data;
        $options[$layer] = theme('openlayers_plus_legend', array(
          'legend' => $legend,
          'layer' => $layer_data,
          'layer_id' => $layer,
        ));
      }
    }
    return $options;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
openlayers_behavior::$options		property
openlayers_behavior::js_dependency		function		17
openlayers_behavior::__construct		function
openlayers_plus_behavior_legend::options_form	public	function	Override of options_form(). Overrides openlayers_behavior::options_form
openlayers_plus_behavior_legend::options_init	public	function	Override of options_init(). Overrides openlayers_behavior::options_init
openlayers_plus_behavior_legend::render	public	function	Render. Overrides openlayers_behavior::render