openlayers_views_plugin_style_source_vector.inc in Openlayers 7.3
Style handler that provides vector features.
File
modules/openlayers_views/views/openlayers_views_plugin_style_source_vector.incView source
<?php
/**
* @file
* Style handler that provides vector features.
*/
/**
* Class openlayers_views_plugin_style_source_vector.
*/
class openlayers_views_plugin_style_source_vector extends views_plugin_style {
/**
* {@inheritdoc}
*/
public function render() {
$grouped_results = $this
->render_grouping($this->view->result, $this->options['grouping']);
$data = $this
->map_features($grouped_results);
// If we are not in preview, just return the data.
if (empty($this->view->live_preview)) {
return $data;
}
else {
// If we are in preview mode, dump out some useful information about this
// data layer.
$output = "You can use the following parameters in your styles as dynamic values";
$output .= "\n------------\n";
if (!empty($data)) {
$keys = array_keys($data);
foreach ($data[$keys[0]]['attributes'] as $key => $value) {
$output .= '${' . $key . "}\n";
}
}
$output .= "\n------------\n";
$output .= t('The following is a dump of the data that is rendered from this display. It is used for debugging purposes only.') . '
' . var_export($data, TRUE);
return '<pre>' . $output . '</pre>';
}
}
/**
* {@inheritdoc}
*/
public function option_definition() {
$options = parent::option_definition();
$options['data_source'] = array(
'default' => 'openlayers_wkt',
);
return $options;
}
/**
* {@inheritdoc}
*/
public function options_form(&$form, &$form_state) {
parent::options_form($form, $form_state);
// Get list of fields in this view & flag available geodata fields.
$handlers = $this->display->handler
->get_handlers('field');
// Check for any fields, as the view needs them.
if (empty($handlers)) {
$form['error_markup'] = array(
'#value' => t('You need to enable at least one field before you can configure your field settings'),
'#prefix' => '<div class="error form-item description">',
'#suffix' => '</div>',
);
return;
}
$fields = array();
foreach ($handlers as $field_id => $handler) {
$fields[$field_id] = $handler
->ui_name() . ' (' . $field_id . ')';
}
// Ensure we've sane defaults:
$this->options['data_source'] = !is_array($this->options['data_source']) ? array() : $this->options['data_source'];
$this->options['data_source'] = $this->options['data_source'] + array(
'value' => 'other_latlon',
'other_lat' => key($fields),
'other_lon' => key($fields),
'wkt' => key($fields),
'other_top' => key($fields),
'other_right' => key($fields),
'other_bottom' => key($fields),
'other_left' => key($fields),
'name_field' => '',
'description_field' => '',
);
$form['data_source'] = array(
'#type' => 'fieldset',
'#tree' => TRUE,
'#title' => t('Data Source'),
'#collapsible' => TRUE,
'#collapsed' => FALSE,
'#weight' => 2,
);
$form['data_source']['value'] = array(
'#type' => 'select',
'#title' => t('Map Data Sources'),
'#description' => t('Choose which sources of data that the map will provide features for.'),
'#options' => array(
'other_latlon' => t('Lat/Lon Pair'),
'other_boundingbox' => t('Bounding Box'),
'wkt' => t('WKT'),
),
'#default_value' => $this->options['data_source']['value'],
);
if (count($fields) > 0) {
$form['data_source']['other_lat'] = array(
'#type' => 'select',
'#title' => t('Latitude Field'),
'#description' => t('Choose a field for Latitude. This should be a field that is a decimal or float value.'),
'#options' => $fields,
'#default_value' => $this->options['data_source']['other_lat'],
'#states' => $this
->datasource_dependent('other_latlon'),
);
$form['data_source']['other_lon'] = array(
'#type' => 'select',
'#title' => t('Longitude Field'),
'#description' => t('Choose a field for Longitude. This should be a field that is a decimal or float value.'),
'#options' => $fields,
'#default_value' => $this->options['data_source']['other_lon'],
'#states' => $this
->datasource_dependent('other_latlon'),
);
$form['data_source']['wkt'] = array(
'#type' => 'select',
'#title' => t('WKT Field'),
'#description' => t('Choose the Openlayers WKT field.'),
'#options' => $fields,
'#default_value' => $this->options['data_source']['wkt'],
'#states' => $this
->datasource_dependent('wkt'),
);
$form['data_source']['other_top'] = array(
'#type' => 'select',
'#title' => t('Top Field'),
'#description' => t('Choose a field for Top. This should be a field that is a decimal or float value.'),
'#options' => $fields,
'#default_value' => $this->options['data_source']['other_top'],
'#states' => $this
->datasource_dependent('other_boundingbox'),
);
$form['data_source']['other_right'] = array(
'#type' => 'select',
'#title' => t('Right Field'),
'#description' => t('Choose a field for Right. This should be a field that is a decimal or float value.'),
'#options' => $fields,
'#default_value' => $this->options['data_source']['other_right'],
'#states' => $this
->datasource_dependent('other_boundingbox'),
);
$form['data_source']['other_bottom'] = array(
'#type' => 'select',
'#title' => t('Bottom Field'),
'#description' => t('Choose a field for Bottom. This should be a field that is a decimal or float value.'),
'#options' => $fields,
'#default_value' => $this->options['data_source']['other_bottom'],
'#states' => $this
->datasource_dependent('other_boundingbox'),
);
$form['data_source']['other_left'] = array(
'#type' => 'select',
'#title' => t('Left Field'),
'#description' => t('Choose a field for Left. This should be a field that is a decimal or float value.'),
'#options' => $fields,
'#default_value' => $this->options['data_source']['other_left'],
'#states' => $this
->datasource_dependent('other_boundingbox'),
);
}
$form['data_source']['name_field'] = array(
'#type' => 'select',
'#title' => t('Title Field'),
'#description' => t('Choose the field which will appear as a title on tooltips.'),
'#options' => array_merge(array(
'' => '',
), $fields),
'#default_value' => $this->options['data_source']['name_field'],
);
$desc_options = array_merge(array(
'' => '',
'#row' => t('<entire row>'),
), $fields);
// Description field.
$form['data_source']['description_field'] = array(
'#type' => 'select',
'#title' => t('Description Content'),
'#description' => t('Choose the field or rendering method which will
appear as a description on tooltips or popups.'),
'#required' => FALSE,
'#options' => $desc_options,
'#default_value' => $this->options['data_source']['description_field'],
);
// A simple way to display attributes and styling.
$form['attributes'] = array(
'#type' => 'fieldset',
'#title' => t('Attributes and Styling'),
'#description' => t('Attributes are field data attached to each feature. This can be used with styling to create Variable styling.'),
'#collapsible' => TRUE,
'#collapsed' => TRUE,
'#weight' => 3,
);
$variable_fields = array();
foreach ($this->view->display_handler
->get_handlers('field') as $field => $handler) {
$variable_fields[$field] = '${' . $field . '}';
}
if (!empty($this->options['data_source']['name_field'])) {
$variable_fields['name'] = '${name}';
}
if (!empty($this->options['data_source']['description_field'])) {
$variable_fields['description'] = '${description}';
}
$form['attributes']['display'] = array(
'#title' => 'Select attributes to include in the features',
'#type' => 'checkboxes',
'#options' => $variable_fields,
'#default_value' => !empty($this->options['attributes']['display']) ? $this->options['attributes']['display'] : array_combine(array_keys($variable_fields), array_keys($variable_fields)),
'#description' => t('Any fields that you select will be attached to ' . 'their respective feature (point, line, polygon) as attributes. ' . 'These attributes can then be used to add variable styling to your ' . 'themes. This is accomplished by using the %syntax syntax in the ' . 'values for a style. You can see a list of available variables in ' . 'the view preview; these can be placed right in the style interface. ' . 'The field has been processed by Views.' . 'By disabling some of them, you can reduce the size ' . 'of the Javascript included in your pages.' . 'Please note that this does not apply to Grouped Displays.', array(
'%syntax' => '${field_name}',
)),
);
}
/**
* Extract features.
*
* @param array $sets
* The array of sets.
*
* @return array
* The array of features.
*/
public function map_features($sets = array()) {
$features = $excluded_fields = array();
$handlers = $this->display->handler
->get_handlers('field');
foreach ($sets as $title => $records) {
foreach ($records as $id => $record) {
$this->view->row_index = $id;
$attributes = array();
$wkt = NULL;
$field_exclude = array();
// Save the 'exclude' options of fields as backup.
foreach ($this->view->field as $fid => $field) {
$field_exclude[$fid] = $field->options['exclude'];
}
// Loop through each fields and render it if there were only one
// field in the row, so we have all the goodness of Views's field
// wrapping, class customizations and label.
foreach ($handlers as $hid => $handler) {
$field_id = $handler->options['id'];
// Exclude all the field from rendering.
foreach ($this->view->field as $field) {
$field->options['exclude'] = TRUE;
}
// Enable only the field we want to render the row.
$this->view->field[$field_id]->options['exclude'] = FALSE;
// Render the row.
$attributes[$hid] = $this->row_plugin
->render($record);
}
// Restore the state of the exclude options in the fields.
foreach ($this->view->field as $fid => $field) {
$this->view->field[$fid]->options['exclude'] = $field_exclude[$fid];
}
// Add the 'name' attribute.
if (isset($this->options['data_source']['name_field'])) {
if (isset($attributes[$this->options['data_source']['name_field']])) {
$attributes['name'] = $attributes[$this->options['data_source']['name_field']];
}
}
// Add the 'description' attribute.
if (isset($this->options['data_source']['description_field'])) {
// Handle rendering the whole record.
if ($this->options['data_source']['description_field'] === '#row') {
$attributes['description'] = trim($this->row_plugin
->render($record));
}
else {
if (isset($attributes[$this->options['data_source']['description_field']])) {
$attributes['description'] = $attributes[$this->options['data_source']['description_field']];
}
}
}
// We do not need the rendered value for these fields,
// just the raw value.
// This is why we use $this->rendered_fields.
if (isset($this->options['data_source']['value'])) {
switch ($this->options['data_source']['value']) {
case 'wkt':
$handler = $handlers[$this->options['data_source']['wkt']];
if (is_object($handler)) {
$wkt = $handler
->allow_advanced_render() ? $handler
->advanced_render($record) : $handler
->render($record);
}
break;
case 'other_latlon':
$handler = $handlers[$this->options['data_source']['other_lon']];
$other_lon = $handler
->allow_advanced_render() ? $handler
->advanced_render($record) : $handler
->render($record);
$handler = $handlers[$this->options['data_source']['other_lat']];
$other_lat = $handler
->allow_advanced_render() ? $handler
->advanced_render($record) : $handler
->render($record);
$wkt = 'POINT(' . $other_lon . ' ' . $other_lat . ')';
break;
}
}
// Only render features that has been enabled in the configuration
// of the display.
if (isset($this->options['attributes']['display'])) {
foreach ($this->options['attributes']['display'] as $fid => $value) {
if ($this->options['attributes']['display'][$fid] === 0) {
unset($attributes[$fid]);
}
}
}
$result = array_map(array(
$this,
'minify_data',
), $attributes);
// Create features array.
$features[] = array(
'projection' => 'EPSG:4326',
'attributes' => $result,
'wkt' => $wkt,
);
}
}
return $features;
}
/**
* Helper function to minify the output data.
*
* Borrowed from the Minify module.
* @link https://www.drupal.org/project/minify
*
* @param string $buffer
* The string to minify.
*
* @return string
* The minified string.
*/
public function minify_data($buffer) {
if (module_exists('minify')) {
return _minify_html($buffer);
}
$search = array(
'/\\>[^\\S ]+/s',
// strip whitespaces after tags, except space
'/[^\\S ]+\\</s',
// strip whitespaces before tags, except space
'/(\\s)+/s',
// shorten multiple whitespace sequences
'/^\\s+|\\s+$/m',
);
$replace = array(
'>',
'<',
'\\1',
'',
);
$buffer = preg_replace($search, $replace, $buffer);
$buffer = preg_replace_callback('/<!--([\\s\\S]*?)-->/', array(
$this,
'minify_remove_html_comment',
), $buffer);
return $buffer;
}
/**
* Remove HTML comments (not containing IE conditional comments).
*
* Borrowed from the Minify module.
* @link https://www.drupal.org/project/minify
*
* @see openlayers_views_plugin_style_source_vector::minify_data()
*/
public function minify_remove_html_comment($string) {
return 0 === strpos($string[1], '[') || FALSE !== strpos($string[1], '<![') ? $string[0] : '';
}
/**
* Basically a macro because #state is rather verbose.
*
* openlayers_views_style_data specific.
*/
public function datasource_dependent($type) {
return array(
'visible' => array(
'#edit-style-options-data-source-value' => array(
'value' => $type,
),
),
);
}
}
Classes
Name | Description |
---|---|
openlayers_views_plugin_style_source_vector | Class openlayers_views_plugin_style_source_vector. |