/[drupal]/contributions/modules/geo/includes/views/views_handler_filter_geo_distance.inc
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revision 1.5, Thu Jun 18 21:00:28 2009 UTC revision 1.6, Wed Aug 5 02:15:54 2009 UTC
# Line 1  Line 1 
1  <?php //$Id: views_handler_filter_geo_distance.inc,v 1.4 2009/06/18 01:24:11 vauxia Exp $  <?php //$Id: views_handler_filter_geo_distance.inc,v 1.5 2009/06/18 21:00:28 vauxia Exp $
2    
3  class views_handler_filter_geo_distance extends views_handler_filter {  class views_handler_filter_geo_distance extends views_handler_filter {
4    
5    function option_definition() {    function option_definition() {
6      $options = parent::option_definition();      $options = parent::option_definition();
7      $options['gis_input'] = array('default' => 'geo_wkt');      $options['gis_input'] = array('default' => 'geo_latlon');
8      $options['gis_input_value'] = array('default' => '');      $options['gis_input_value'] = array('default' => array());
9      return $options;      return $options;
10    }    }
11    
12    function value_form(&$form, &$form_state, $key = 'value') {    function value_form(&$form, &$form_state) {
13      $exposed = $key != 'value';      $exposed = $form_state['exposed'];
14      $gis_input = $this->value['gis_input'];      $key = $exposed ? $this->options['expose']['identifier'] : 'value';
15    
16      $form[$key] = array('#tree' => TRUE);      // TODO handle this based on exposdieness - or delete it outright?
17        if ($exposed && empty($form_state['input'])) {
18      $form[$key]['gis_input'] = geo('gis_input_selector', $gis_input);        $form_state['input'][$key] = $this->value;
19      $form[$key]['gis_input']['#access'] = !$exposed;      }
20    
21      if ($gis_input) {      if (!$exposed) {
22          $form['gis_input'] = geo('gis_input_selector', $this->options['gis_input']);
23        $form[$key]['geo_distance'] = array(      }
24          '#type' => 'textfield',  
25          '#title' => t('Distance'),      $form['value'] = array('#tree' => TRUE);
26          '#default_value' => $this->value['geo_distance'],  
27          '#size' => 5,      $form['value']['geo_distance'] = array(
28          '#access' => !$exposed || $this->options['show_geo_distance'],        '#type' => 'textfield',
29        );        '#title' => t('Distance'),
30          '#default_value' => $this->value['geo_distance'],
31        $form[$key]['geo_units'] = array(        '#size' => 5,
32          '#type' => 'select',        '#access' => !$exposed || $this->options['show_geo_distance'],
33          '#title' => t('Units'),        '#process' => array('views_process_dependency'),
34          '#options' => geo_units(),        '#dependency' => array('edit-options-value-gis-input'),
35          '#default_value' => $this->value['geo_units'],      );
36          '#access' => !$exposed || $this->options['show_geo_units'],  
37        );      $form['value']['geo_units'] = array(
38          '#type' => 'select',
39          '#title' => t('Units'),
40          '#options' => geo_units(),
41          '#default_value' => $this->value['geo_units'],
42          '#access' => !$exposed || $this->options['show_geo_units'],
43          '#process' => array('views_process_dependency'),
44          '#dependency' => array('edit-options-value-gis-input'),
45        );
46    
47        $info = module_invoke_all('gis_input_info');      // The "target" value gets converted to the value that is actually used.
48        $info = $info[$this->value['gis_input']];      // The gis_input_value field stores the input as it was entered.
49        $form[$key]['target'] = array_merge($info['element'], array(      $form['value']['target'] = array('#tree' => TRUE);
50    
51        foreach (module_invoke_all('gis_input_info') as $name => $info) {
52          // The exposed form only shows one input.
53          if ($exposed && ($name != $this->options['gis_input'])) continue;
54    
55          // Ignore nonexistent element types.
56          if (!$element = _element_info($info['element']['#type'])) continue;
57          //unset($element['#parents'], $element['#tree']);
58          unset($element['#parents']);
59    
60          //$value = is_array($this->value['gis_input_value']) ? $this->value['gis_input_value'][$name] : NULL;
61          $value = is_array($this->value['target']) ? $this->value['target'][$name] : NULL;
62    
63          $element = array_merge($element, $info['element']);
64          $element = array_merge($element, array(
65          '#title' => $this->options['label'],          '#title' => $this->options['label'],
66          '#default_value' => $this->value['gis_input_value'],          '#default_value' => $value,
67          '#gis_type' => 'point', // TODO derived.          '#gis_type' => 'point', // TODO derived.
68          '#gis_input' => $info['gis input'], // The format expected by the element.          '#gis_input' => $info['gis input'], // The format expected by the element.
69          '#gis_output' => 'array', // The format expected by this handler.          '#gis_output' => 'array', // The format expected by this handler.
70          '#weight' => 1,       //   '#access' => (!$exposed || ($name == $this->options['gis_input'])),
71        ));        ));
72    
73        if (!isset($form[$key]['#after_build'])) {        if (!$exposed) {
74          $form[$key]['#after_build'] = array();          $element['#process'][] = 'views_process_dependency';
75            $element['#dependency'] = array('edit-options-gis-input' => array($name));
76        }        }
       $form[$key]['target']['#after_build'][] = 'geo_element_set_value';  
     }  
77    
78      // Create an additional field to store the input as it was submitted.        // Add the geo_element_set_value function to the as-translated version.
79      $form[$key]['gis_input_value'] = $form[$key]['target'];        //$element['#after_build'][] = 'geo_element_set_value';
     $form[$key]['gis_input_value']['#access'] = FALSE;  
   }  
   
   function value_validate($form, &$form_state, $key = 'value') {  
     parent::value_validate($form, $form_state);  
     form_set_value($form[$key]['gis_input_value'], $form[$key]['target']['#gis_input_value'], $form_state);  
   }  
   
   function exposed_form(&$form, &$form_state) {  
     $key = $this->options['expose']['identifier'];  
     $this->value_form($form, $form_state, $key);  
   }  
80    
81    function exposed_validate($form, &$form_state) {        // Add this element to the form.
82      $key = $this->options['expose']['identifier'];        $element['#tree'] = TRUE;
83      $this->value_validate($form, $form_state, $key);        $form['value']['target'][$name] = $element;
84        }
85    }    }
86    
87    function accept_exposed_input(&$input) {    function accept_exposed_input(&$input) {
88        if (empty($this->options['exposed'])) {
89          return TRUE;
90        }
91    
92      $key = $this->options['expose']['identifier'];      $key = $this->options['expose']['identifier'];
93      $value = $input[$key];      $value = $input[$key];
94    
95      // Ensure that the entered value is stored in the user's session.      // Ensure that the entered value is stored in the user's session.
96      $input[$key]['target'] = $input[$key]['gis_input_value'];      //$input[$key]['target'] = $input[$key]['gis_input_value'];
97    
98      if ($value['geo_distance'] && $value['geo_units'] && $value['target']) {      if (!$this->_value_is_empty($value['target'][$this->options['gis_input']])) {
99        $this->value = $value;        $this->value = $value;
100        return TRUE;        return TRUE;
101      }      }
102        elseif (!$this->_value_is_empty($this->value['target'][$this->options['gis_input']])) {
103          return TRUE;
104        }
105    
106      // TODO really?      // TODO really?
107      return FALSE;      return FALSE;
108    }    }
109    
110      function admin_summary() {
111        $out = '';
112        if ($this->value) {
113          $out = (int) $this->value['geo_distance'];
114          $out .= ' '. geo_units($this->value['geo_units']);
115          $out .= ' '. t('from');
116          $out .= ' '. $this->value['target'][$this->options['gis_input']];
117        }
118        return $out;
119      }
120    
121      function _value_is_empty($value) {
122        // TODO this is not very flexible...
123        if (is_scalar($value)) return empty($value);
124        if (is_array($value)) {
125          $val = end($value);
126          return empty($val);
127        }
128      }
129    
130    function query() {    function query() {
131      $value  = $this->value;      $value  = $this->value;
132    
133      $limit  = $value['geo_distance'];      $limit  = $value['geo_distance'];
134      $units  = $value['geo_units'];      $units  = $value['geo_units'];
135      $target = $value['target'];      if ($value['target']) {
136          $target = $value['target'][$this->options['gis_input']];
137        }
138        else return;
139    
140      if (!$value['gis_input_value']) return;      foreach (module_invoke_all('gis_input_info') as $name => $info) {
141          if ($name == $this->options['gis_input']) {
142            // TODO the output format (array) should not be hard-coded.
143            $target = geo_value_convert($target, $info['gis input'], 'array');
144            break;
145          }
146        }
147    
148      // Set the distance limit to meters.      // Set the distance limit to meters.
149      $limit = (int) geo_unit_convert($limit, $units, 'm');      $limit = (int) geo_unit_convert($limit, $units, 'm');
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