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<?php
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/**
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* @file
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* Definition of views_handler_filter_in_operator.
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*/
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/**
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* Simple filter to handle matching of multiple options selectable via checkboxes
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*
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* Definition items:
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* - options callback: The function to call in order to generate the value options. If omitted, the options 'Yes' and 'No' will be used.
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* - options arguments: An array of arguments to pass to the options callback.
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*
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* @ingroup views_filter_handlers
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*/
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class views_handler_filter_in_operator extends views_handler_filter {
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var $value_form_type = 'checkboxes';
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/**
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* @var array
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* Stores all operations which are available on the form.
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*/
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var $value_options = NULL;
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function construct() {
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parent::construct();
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$this->value_title = t('Options');
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$this->value_options = NULL;
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}
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/**
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* Child classes should be used to override this function and set the
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* 'value options', unless 'options callback' is defined as a valid function
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* or static public method to generate these values.
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*
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* This can use a guard to be used to reduce database hits as much as
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* possible.
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*
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* @return
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* Return the stored values in $this->value_options if someone expects it.
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*/
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function get_value_options() {
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if (isset($this->value_options)) {
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return;
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}
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if (isset($this->definition['options callback']) && is_callable($this->definition['options callback'])) {
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if (isset($this->definition['options arguments']) && is_array($this->definition['options arguments'])) {
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$this->value_options = call_user_func_array($this->definition['options callback'], $this->definition['options arguments']);
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}
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else {
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$this->value_options = call_user_func($this->definition['options callback']);
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}
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}
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else {
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$this->value_options = array(t('Yes'), t('No'));
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}
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return $this->value_options;
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}
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function expose_options() {
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parent::expose_options();
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$this->options['expose']['reduce'] = FALSE;
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}
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function expose_form(&$form, &$form_state) {
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parent::expose_form($form, $form_state);
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$form['expose']['reduce'] = array(
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'#type' => 'checkbox',
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'#title' => t('Limit list to selected items'),
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'#description' => t('If checked, the only items presented to the user will be the ones selected here.'),
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'#default_value' => !empty($this->options['expose']['reduce']), // safety
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);
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}
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function option_definition() {
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$options = parent::option_definition();
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$options['operator']['default'] = 'in';
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$options['value']['default'] = array();
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$options['expose']['contains']['reduce'] = array('default' => FALSE, 'bool' => TRUE);
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return $options;
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}
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/**
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* This kind of construct makes it relatively easy for a child class
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* to add or remove functionality by overriding this function and
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* adding/removing items from this array.
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*/
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function operators() {
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$operators = array(
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'in' => array(
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'title' => t('Is one of'),
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'short' => t('in'),
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'short_single' => t('='),
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'method' => 'op_simple',
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'values' => 1,
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),
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'not in' => array(
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'title' => t('Is not one of'),
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'short' => t('not in'),
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'short_single' => t('<>'),
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'method' => 'op_simple',
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'values' => 1,
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),
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);
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// if the definition allows for the empty operator, add it.
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if (!empty($this->definition['allow empty'])) {
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$operators += array(
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'empty' => array(
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'title' => t('Is empty (NULL)'),
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'method' => 'op_empty',
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'short' => t('empty'),
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'values' => 0,
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),
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'not empty' => array(
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'title' => t('Is not empty (NOT NULL)'),
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'method' => 'op_empty',
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'short' => t('not empty'),
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'values' => 0,
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),
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);
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}
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return $operators;
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}
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/**
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* Build strings from the operators() for 'select' options
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*/
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function operator_options($which = 'title') {
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$options = array();
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foreach ($this->operators() as $id => $info) {
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$options[$id] = $info[$which];
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}
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return $options;
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}
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function operator_values($values = 1) {
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$options = array();
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foreach ($this->operators() as $id => $info) {
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if (isset($info['values']) && $info['values'] == $values) {
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$options[] = $id;
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}
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}
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return $options;
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}
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function value_form(&$form, &$form_state) {
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$form['value'] = array();
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$options = array();
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if (empty($form_state['exposed'])) {
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// Add a select all option to the value form.
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$options = array('all' => t('Select all'));
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}
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$this->get_value_options();
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$options += $this->value_options;
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$default_value = (array) $this->value;
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$which = 'all';
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if (!empty($form['operator'])) {
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$source = ($form['operator']['#type'] == 'radios') ? 'radio:options[operator]' : 'edit-options-operator';
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}
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if (!empty($form_state['exposed'])) {
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$identifier = $this->options['expose']['identifier'];
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if (empty($this->options['expose']['use_operator']) || empty($this->options['expose']['operator_id'])) {
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// exposed and locked.
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$which = in_array($this->operator, $this->operator_values(1)) ? 'value' : 'none';
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}
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else {
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$source = 'edit-' . drupal_html_id($this->options['expose']['operator_id']);
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}
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if (!empty($this->options['expose']['reduce'])) {
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$options = $this->reduce_value_options();
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if (!empty($this->options['expose']['multiple']) && empty($this->options['expose']['required'])) {
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$default_value = array();
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}
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}
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if (empty($this->options['expose']['multiple'])) {
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if (empty($this->options['expose']['required']) && (empty($default_value) || !empty($this->options['expose']['reduce']))) {
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$default_value = 'All';
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}
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elseif (empty($default_value)) {
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$keys = array_keys($options);
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$default_value = array_shift($keys);
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}
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else {
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$copy = $default_value;
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$default_value = array_shift($copy);
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}
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}
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}
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if ($which == 'all' || $which == 'value') {
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$form['value'] = array(
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'#type' => $this->value_form_type,
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'#title' => $this->value_title,
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'#options' => $options,
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'#default_value' => $default_value,
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// These are only valid for 'select' type, but do no harm to checkboxes.
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'#multiple' => TRUE,
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'#size' => count($options) > 8 ? 8 : count($options),
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);
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if (!empty($form_state['exposed']) && !isset($form_state['input'][$identifier])) {
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$form_state['input'][$identifier] = $default_value;
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}
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if ($which == 'all') {
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if (empty($form_state['exposed']) && (in_array($this->value_form_type, array('checkbox', 'checkboxes', 'radios', 'select')))) {
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$form['value']['#prefix'] = '<div id="edit-options-value-wrapper">';
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$form['value']['#suffix'] = '</div>';
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}
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$form['value']['#dependency'] = array($source => $this->operator_values(1));
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}
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}
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}
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/**
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* When using exposed filters, we may be required to reduce the set.
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*/
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function reduce_value_options($input = NULL) {
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if (!isset($input)) {
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$input = $this->value_options;
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}
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// Because options may be an array of strings, or an array of mixed arrays
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// and strings (optgroups) or an array of objects, we have to
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// step through and handle each one individually.
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$options = array();
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foreach ($input as $id => $option) {
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if (is_array($option)) {
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$options[$id] = $this->reduce_value_options($option);
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continue;
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}
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elseif (is_object($option)) {
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$keys = array_keys($option->option);
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$key = array_shift($keys);
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if (isset($this->options['value'][$key])) {
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$options[$id] = $option;
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}
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}
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elseif (isset($this->options['value'][$id])) {
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$options[$id] = $option;
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}
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}
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return $options;
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}
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259
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260
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function accept_exposed_input($input) {
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// A very special override because the All state for this type of
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262
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// filter could have a default:
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263
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if (empty($this->options['exposed'])) {
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return TRUE;
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}
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266
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267
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// If this is non-multiple and non-required, then this filter will
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268
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// participate, but using the default settings, *if* 'limit is true.
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if (empty($this->options['expose']['multiple']) && empty($this->options['expose']['required']) && !empty($this->options['expose']['limit'])) {
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$identifier = $this->options['expose']['identifier'];
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271
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if ($input[$identifier] == 'All') {
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272
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return TRUE;
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}
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274
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}
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275
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return parent::accept_exposed_input($input);
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}
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278
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279
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function value_submit($form, &$form_state) {
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280
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// Drupal's FAPI system automatically puts '0' in for any checkbox that
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281
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// was not set, and the key to the checkbox if it is set.
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282
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// Unfortunately, this means that if the key to that checkbox is 0,
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283
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// we are unable to tell if that checkbox was set or not.
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284
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285
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// Luckily, the '#value' on the checkboxes form actually contains
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286
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// *only* a list of checkboxes that were set, and we can use that
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287
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// instead.
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288
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289
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$form_state['values']['options']['value'] = $form['value']['#value'];
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290
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}
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291
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292
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function admin_summary() {
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293
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if ($this->is_a_group()) {
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294
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return t('grouped');
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295
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}
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296
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if (!empty($this->options['exposed'])) {
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297
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return t('exposed');
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298
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}
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299
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$info = $this->operators();
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300
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301
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$this->get_value_options();
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302
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303
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if (!is_array($this->value)) {
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304
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return;
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305
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}
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306
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307
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$operator = check_plain($info[$this->operator]['short']);
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308
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$values = '';
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309
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if (in_array($this->operator, $this->operator_values(1))) {
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310
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// Remove every element which is not known.
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311
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foreach ($this->value as $value) {
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312
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if (!isset($this->value_options[$value])) {
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313
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unset($this->value[$value]);
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314
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}
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315
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}
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316
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// Choose different kind of ouput for 0, a single and multiple values.
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317
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if (count($this->value) == 0) {
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318
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$values = t('Unknown');
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319
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}
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320
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else if (count($this->value) == 1) {
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321
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// If any, use the 'single' short name of the operator instead.
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322
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if (isset($info[$this->operator]['short_single'])) {
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323
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$operator = check_plain($info[$this->operator]['short_single']);
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324
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}
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325
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326
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$keys = $this->value;
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327
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$value = array_shift($keys);
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328
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if (isset($this->value_options[$value])) {
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329
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$values = check_plain($this->value_options[$value]);
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330
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}
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331
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else {
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332
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$values = '';
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|
333
|
}
|
|
334
|
}
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335
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else {
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336
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foreach ($this->value as $value) {
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337
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if ($values !== '') {
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338
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$values .= ', ';
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339
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}
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340
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if (drupal_strlen($values) > 8) {
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341
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$values .= '...';
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342
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break;
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|
343
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}
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344
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if (isset($this->value_options[$value])) {
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345
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$values .= check_plain($this->value_options[$value]);
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346
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}
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347
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}
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|
348
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}
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349
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}
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|
350
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351
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return $operator . (($values !== '') ? ' ' . $values : '');
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352
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}
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|
353
|
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354
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function query() {
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355
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$info = $this->operators();
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356
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if (!empty($info[$this->operator]['method'])) {
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357
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$this->{$info[$this->operator]['method']}();
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358
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}
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359
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}
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|
360
|
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361
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function op_simple() {
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|
362
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if (empty($this->value)) {
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363
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return;
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|
364
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}
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|
365
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$this->ensure_my_table();
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|
366
|
|
|
367
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// We use array_values() because the checkboxes keep keys and that can cause
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|
368
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// array addition problems.
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369
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$this->query->add_where($this->options['group'], "$this->table_alias.$this->real_field", array_values($this->value), $this->operator);
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|
370
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}
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|
371
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372
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function op_empty() {
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|
373
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$this->ensure_my_table();
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374
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if ($this->operator == 'empty') {
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375
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$operator = "IS NULL";
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376
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}
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377
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else {
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378
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$operator = "IS NOT NULL";
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|
379
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}
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|
380
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|
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381
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$this->query->add_where($this->options['group'], "$this->table_alias.$this->real_field", NULL, $operator);
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|
382
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}
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|
383
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|
|
384
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function validate() {
|
|
385
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$this->get_value_options();
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|
386
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$errors = array();
|
|
387
|
|
|
388
|
// If the operator is an operator which doesn't require a value, there is
|
|
389
|
// no need for additional validation.
|
|
390
|
if (in_array($this->operator, $this->operator_values(0))) {
|
|
391
|
return array();
|
|
392
|
}
|
|
393
|
|
|
394
|
if (!in_array($this->operator, $this->operator_values(1))) {
|
|
395
|
$errors[] = t('The operator is invalid on filter: @filter.', array('@filter' => $this->ui_name(TRUE)));
|
|
396
|
}
|
|
397
|
if (is_array($this->value)) {
|
|
398
|
if (!isset($this->value_options)) {
|
|
399
|
// Don't validate if there are none value options provided, for example for special handlers.
|
|
400
|
return $errors;
|
|
401
|
}
|
|
402
|
if ($this->options['exposed'] && !$this->options['expose']['required'] && empty($this->value)) {
|
|
403
|
// Don't validate if the field is exposed and no default value is provided.
|
|
404
|
return $errors;
|
|
405
|
}
|
|
406
|
|
|
407
|
// Some filter_in_operator usage uses optgroups forms, so flatten it.
|
|
408
|
$flat_options = form_options_flatten($this->value_options, TRUE);
|
|
409
|
|
|
410
|
// Remove every element which is not known.
|
|
411
|
foreach ($this->value as $value) {
|
|
412
|
if (!isset($flat_options[$value])) {
|
|
413
|
unset($this->value[$value]);
|
|
414
|
}
|
|
415
|
}
|
|
416
|
// Choose different kind of ouput for 0, a single and multiple values.
|
|
417
|
if (count($this->value) == 0) {
|
|
418
|
$errors[] = t('No valid values found on filter: @filter.', array('@filter' => $this->ui_name(TRUE)));
|
|
419
|
}
|
|
420
|
}
|
|
421
|
elseif (!empty($this->value) && ($this->operator == 'in' || $this->operator == 'not in')) {
|
|
422
|
$errors[] = t('The value @value is not an array for @operator on filter: @filter', array('@value' => views_var_export($this->value), '@operator' => $this->operator, '@filter' => $this->ui_name(TRUE)));
|
|
423
|
}
|
|
424
|
return $errors;
|
|
425
|
}
|
|
426
|
}
|
