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<?php
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// $Id: views_handler_filter.inc,v 1.9 2009/06/03 00:05:05 merlinofchaos Exp $
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/**
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* @defgroup views_filter_handlers Views' filter handlers
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* @{
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* Handlers to tell Views how to filter queries.
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*
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* Definition items:
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* - allow empty: If true, the 'IS NULL' and 'IS NOT NULL' operators become
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* available as standard operators.
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* -
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*/
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/**
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* Base class for filters.
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*/
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class views_handler_filter extends views_handler {
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/**
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* Provide some extra help to get the operator/value easier to use.
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*
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* This likely has to be overridden by filters which are more complex
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* than simple operator/value.
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*/
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function init(&$view, $options) {
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parent::init($view, $options);
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$this->operator = $this->options['operator'];
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$this->value = $this->options['value'];
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// Compatibility: Set use_operator to true if the old way of using
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// the operator is set and use_operator is NULL (was never set).
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if (!empty($options['exposed']) && !empty($options['expose']['operator']) && !isset($options['expose']['use_operator'])) {
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$this->options['expose']['use_operator'] = TRUE;
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}
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// If there are relationships in the view, allow empty should be true
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// so that we can do IS NULL checks on items. Not all filters respect
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// allow empty, but string and numeric do and that covers enough.
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if ($this->view->display_handler->get_option('relationships')) {
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$this->definition['allow empty'] = TRUE;
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}
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}
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function option_definition() {
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$options = parent::option_definition();
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$options['operator'] = array('default' => '=');
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$options['value'] = array('default' => '');
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$options['group'] = array('default' => '0');
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$options['exposed'] = array('default' => FALSE);
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$options['expose'] = array(
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'contains' => array(
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'operator' => array('default' => FALSE),
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'label' => array('default' => '', 'translatable' => TRUE),
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),
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);
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return $options;
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}
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/**
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* Display the filter on the administrative summary
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*/
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function admin_summary() {
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return check_plain((string) $this->operator) . ' ' . check_plain((string) $this->value);
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}
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/**
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* Determine if a filter can be exposed.
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*/
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function can_expose() { return TRUE; }
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/**
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* Provide the basic form which calls through to subforms.
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* If overridden, it is best to call through to the parent,
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* or to at least make sure all of the functions in this form
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* are called.
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*/
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function options_form(&$form, &$form_state) {
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if ($this->can_expose()) {
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$this->show_expose_button($form, $form_state);
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}
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$form['op_val_start'] = array('#value' => '<div class="clear-block">');
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$this->show_operator_form($form, $form_state);
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$this->show_value_form($form, $form_state);
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$form['op_val_end'] = array('#value' => '</div>');
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if ($this->can_expose()) {
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$this->show_expose_form($form, $form_state);
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}
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}
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/**
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* Simple validate handler
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*/
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function options_validate(&$form, &$form_state) {
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$this->operator_validate($form, $form_state);
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$this->value_validate($form, $form_state);
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if (!empty($this->options['exposed'])) {
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$this->expose_validate($form, $form_state);
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}
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}
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/**
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* Simple submit handler
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*/
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function options_submit(&$form, &$form_state) {
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unset($form_state['values']['expose_button']); // don't store this.
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$this->operator_submit($form, $form_state);
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$this->value_submit($form, $form_state);
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if (!empty($this->options['exposed'])) {
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$this->expose_submit($form, $form_state);
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}
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}
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/**
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* Shortcut to display the operator form.
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*/
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function show_operator_form(&$form, &$form_state) {
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$this->operator_form($form, $form_state);
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$form['operator']['#prefix'] = '<div class="views-left-30">';
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$form['operator']['#suffix'] = '</div>';
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}
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/**
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* Provide a form for setting the operator.
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*
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* This may be overridden by child classes, and it must
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* define $form['operator'];
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*/
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function operator_form(&$form, &$form_state) {
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$options = $this->operator_options();
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if (!empty($options)) {
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$form['operator'] = array(
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'#type' => count($options) < 10 ? 'radios' : 'select',
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'#title' => t('Operator'),
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'#default_value' => $this->operator,
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'#options' => $options,
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);
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}
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}
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/**
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* Provide a list of options for the default operator form.
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* Should be overridden by classes that don't override operator_form
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*/
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function operator_options() { return array(); }
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/**
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* Validate the operator form.
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*/
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function operator_validate($form, &$form_state) { }
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/**
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* Perform any necessary changes to the form values prior to storage.
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* There is no need for this function to actually store the data.
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*/
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function operator_submit($form, &$form_state) { }
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/**
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* Shortcut to display the value form.
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*/
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function show_value_form(&$form, &$form_state) {
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$this->value_form($form, $form_state);
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if (empty($this->no_operator)) {
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$form['value']['#prefix'] = '<div class="views-right-70">' . (isset($form['value']['#prefix']) ? $form['value']['#prefix'] : '');
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$form['value']['#suffix'] = (isset($form['value']['#suffix']) ? $form['value']['#suffix'] : '') . '</div>';
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}
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}
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/**
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* Provide a form for setting options.
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*
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* This should be overridden by all child classes and it must
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* define $form['value']
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*/
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function value_form(&$form, &$form_state) { $form['value'] = array(); }
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/**
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* Validate the options form.
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*/
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function value_validate($form, &$form_state) { }
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/**
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* Perform any necessary changes to the form values prior to storage.
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* There is no need for this function to actually store the data.
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*/
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function value_submit($form, &$form_state) { }
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/**
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* Shortcut to display the expose/hide button.
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*/
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function show_expose_button(&$form, &$form_state) {
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$form['expose_button'] = array(
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'#prefix' => '<div class="views-expose clear-block">',
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'#suffix' => '</div>',
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);
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if (empty($this->options['exposed'])) {
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$form['expose_button']['button'] = array(
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'#type' => 'submit',
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'#value' => t('Expose'),
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'#submit' => array('views_ui_config_item_form_expose'),
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);
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$form['expose_button']['markup'] = array(
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'#prefix' => '<div class="description">',
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'#value' => t('This item is currently not exposed. If you <strong>expose</strong> it, users will be able to change the filter as they view it.'),
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'#suffix' => '</div>',
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);
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}
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else {
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$form['expose_button']['button'] = array(
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'#type' => 'submit',
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'#value' => t('Hide'),
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'#submit' => array('views_ui_config_item_form_expose'),
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);
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$form['expose_button']['markup'] = array(
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'#prefix' => '<div class="description">',
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'#value' => t('This item is currently exposed. If you <strong>hide</strong> it, users will not be able to change the filter as they view it.'),
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'#suffix' => '</div>',
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);
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}
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}
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/**
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* Shortcut to display the exposed options form.
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*/
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function show_expose_form(&$form, &$form_state) {
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if (empty($this->options['exposed'])) {
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return;
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}
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$form['expose'] = array(
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'#prefix' => '<div class="views-expose-options clear-block">',
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'#suffix' => '</div>',
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);
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$this->expose_form($form, $form_state);
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// When we click the expose button, we add new gadgets to the form but they
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// have no data in $_POST so their defaults get wiped out. This prevents
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// these defaults from getting wiped out. This setting will only be TRUE
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// during a 2nd pass rerender.
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if (!empty($form_state['force_expose_options'])) {
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foreach (element_children($form['expose']) as $id) {
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if (isset($form['expose'][$id]['#default_value']) && !isset($form['expose'][$id]['#value'])) {
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$form['expose'][$id]['#value'] = $form['expose'][$id]['#default_value'];
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}
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}
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}
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}
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/**
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* Overridable form for exposed filter options.
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*
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* If overridden, it is best to call the parent or re-implement
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* the stuff here.
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*
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* Many filters will need to override this in order to provide options
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* that are nicely tailored to the given filter.
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*/
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function expose_form(&$form, &$form_state) {
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$form['expose']['start_left'] = array(
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'#value' => '<div class="views-left-50">',
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);
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$this->expose_form_left($form, $form_state);
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$form['expose']['end_left'] = array(
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'#value' => '</div>',
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);
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$form['expose']['start_checkboxes'] = array(
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'#value' => '<div class="form-checkboxes views-left-40 clear-block">',
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);
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$this->expose_form_right($form, $form_state);
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$form['expose']['end_checkboxes'] = array(
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'#value' => '</div>',
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);
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}
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/**
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* Handle the 'left' side fo the exposed options form.
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*/
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function expose_form_left(&$form, &$form_state) {
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if (!empty($form['operator']['#type'])) {
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$form['expose']['use_operator'] = array(
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'#type' => 'checkbox',
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'#title' => t('Unlock operator'),
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'#description' => t('When checked, the operator will be exposed to the user'),
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'#default_value' => !empty($this->options['expose']['use_operator']),
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);
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$form['expose']['operator'] = array(
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'#type' => 'textfield',
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'#default_value' => $this->options['expose']['operator'],
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'#title' => t('Operator identifier'),
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'#size' => 40,
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'#description' => t('This will appear in the URL after the ? to identify this operator.'),
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'#process' => array('views_process_dependency'),
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'#dependency' => array(
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'edit-options-expose-use-operator' => array(1)
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),
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);
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}
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else {
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$form['expose']['operator'] = array(
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'#type' => 'value',
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'#value' => '',
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);
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}
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$form['expose']['identifier'] = array(
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'#type' => 'textfield',
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'#default_value' => $this->options['expose']['identifier'],
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'#title' => t('Filter identifier'),
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'#size' => 40,
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'#description' => t('This will appear in the URL after the ? to identify this filter. Cannot be blank.'),
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);
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$form['expose']['label'] = array(
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'#type' => 'textfield',
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'#default_value' => $this->options['expose']['label'],
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'#title' => t('Label'),
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'#size' => 40,
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);
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}
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/**
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| 328 |
* Handle the 'right' side fo the exposed options form.
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| 329 |
*/
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| 330 |
function expose_form_right(&$form, &$form_state) {
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$form['expose']['optional'] = array(
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'#type' => 'checkbox',
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'#title' => t('Optional'),
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'#description' => t('This exposed filter is optional and will have added options to allow it not to be set.'),
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'#default_value' => $this->options['expose']['optional'],
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);
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| 337 |
if (empty($this->no_single)) {
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$form['expose']['single'] = array(
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| 339 |
'#type' => 'checkbox',
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'#title' => t('Force single'),
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'#description' => t('Force this exposed filter to accept only one option.'),
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'#default_value' => $this->options['expose']['single'],
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);
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| 344 |
}
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| 345 |
$form['expose']['remember'] = array(
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| 346 |
'#type' => 'checkbox',
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| 347 |
'#title' => t('Remember'),
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| 348 |
'#description' => t('Remember the last setting the user gave this filter.'),
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| 349 |
'#default_value' => $this->options['expose']['remember'],
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| 350 |
);
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| 351 |
}
|
| 352 |
|
| 353 |
/**
|
| 354 |
* Validate the options form.
|
| 355 |
*/
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| 356 |
function expose_validate($form, &$form_state) {
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| 357 |
if (empty($this->options['expose']['identifier'])) {
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| 358 |
if (empty($form_state['values']['options']['expose']['identifier'])) {
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| 359 |
form_error($form['expose']['identifier'], t('The identifier is required if the filter is exposed.'));
|
| 360 |
}
|
| 361 |
}
|
| 362 |
|
| 363 |
if (!empty($form_state['values']['options']['expose']['identifier']) && $form_state['values']['options']['expose']['identifier'] == 'value') {
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| 364 |
form_error($form['expose']['identifier'], t('This identifier is not allowed.'));
|
| 365 |
}
|
| 366 |
}
|
| 367 |
|
| 368 |
/**
|
| 369 |
* Perform any necessary changes to the form exposes prior to storage.
|
| 370 |
* There is no need for this function to actually store the data.
|
| 371 |
*/
|
| 372 |
function expose_submit($form, &$form_state) { }
|
| 373 |
|
| 374 |
/**
|
| 375 |
* Provide default options for exposed filters.
|
| 376 |
*/
|
| 377 |
function expose_options() {
|
| 378 |
$this->options['expose'] = array(
|
| 379 |
'use_operator' => FALSE,
|
| 380 |
'operator' => $this->options['id'] . '_op',
|
| 381 |
'identifier' => $this->options['id'],
|
| 382 |
'label' => $this->ui_name(),
|
| 383 |
'remember' => FALSE,
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| 384 |
'single' => TRUE,
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| 385 |
'optional' => TRUE,
|
| 386 |
);
|
| 387 |
}
|
| 388 |
|
| 389 |
/**
|
| 390 |
* Render our chunk of the exposed filter form when selecting
|
| 391 |
*
|
| 392 |
* You can override this if it doesn't do what you expect.
|
| 393 |
*/
|
| 394 |
function exposed_form(&$form, &$form_state) {
|
| 395 |
if (empty($this->options['exposed'])) {
|
| 396 |
return;
|
| 397 |
}
|
| 398 |
|
| 399 |
if (!empty($this->options['expose']['use_operator']) && !empty($this->options['expose']['operator'])) {
|
| 400 |
$operator = $this->options['expose']['operator'];
|
| 401 |
$this->operator_form($form, $form_state);
|
| 402 |
$form[$operator] = $form['operator'];
|
| 403 |
|
| 404 |
if (isset($form[$operator]['#title'])) {
|
| 405 |
unset($form[$operator]['#title']);
|
| 406 |
}
|
| 407 |
|
| 408 |
$this->exposed_translate($form[$operator], 'operator');
|
| 409 |
|
| 410 |
unset($form['operator']);
|
| 411 |
}
|
| 412 |
|
| 413 |
if (!empty($this->options['expose']['identifier'])) {
|
| 414 |
$value = $this->options['expose']['identifier'];
|
| 415 |
$this->value_form($form, $form_state);
|
| 416 |
$form[$value] = $form['value'];
|
| 417 |
|
| 418 |
if (isset($form[$value]['#title']) && !empty($form[$value]['#type']) && $form[$value]['#type'] != 'checkbox') {
|
| 419 |
unset($form[$value]['#title']);
|
| 420 |
}
|
| 421 |
|
| 422 |
$this->exposed_translate($form[$value], 'value');
|
| 423 |
|
| 424 |
if (!empty($form['#type']) && ($form['#type'] == 'checkboxes' || ($form['#type'] == 'select' && !empty($form['#multiple'])))) {
|
| 425 |
unset($form[$value]['#default_value']);
|
| 426 |
}
|
| 427 |
|
| 428 |
if (!empty($form['#type']) && $form['#type'] == 'select' && empty($form['#multiple'])) {
|
| 429 |
$form[$value]['#default_value'] = 'All';
|
| 430 |
}
|
| 431 |
|
| 432 |
if ($value != 'value') {
|
| 433 |
unset($form['value']);
|
| 434 |
}
|
| 435 |
}
|
| 436 |
}
|
| 437 |
|
| 438 |
/**
|
| 439 |
* Make some translations to a form item to make it more suitable to
|
| 440 |
* exposing.
|
| 441 |
*/
|
| 442 |
function exposed_translate(&$form, $type) {
|
| 443 |
if (!isset($form['#type'])) {
|
| 444 |
return;
|
| 445 |
}
|
| 446 |
|
| 447 |
if ($form['#type'] == 'radios') {
|
| 448 |
$form['#type'] = 'select';
|
| 449 |
}
|
| 450 |
// Checkboxes don't work so well in exposed forms due to GET conversions.
|
| 451 |
if ($form['#type'] == 'checkboxes') {
|
| 452 |
if (empty($form['#no_convert']) || !empty($this->options['expose']['single'])) {
|
| 453 |
$form['#type'] = 'select';
|
| 454 |
}
|
| 455 |
if (empty($this->options['expose']['single'])) {
|
| 456 |
$form['#multiple'] = TRUE;
|
| 457 |
}
|
| 458 |
}
|
| 459 |
if (!empty($this->options['expose']['single']) && isset($form['#multiple'])) {
|
| 460 |
unset($form['#multiple']);
|
| 461 |
$form['#size'] = NULL;
|
| 462 |
}
|
| 463 |
|
| 464 |
if ($type == 'value' && !empty($this->options['expose']['optional']) && $form['#type'] == 'select' && empty($form['#multiple'])) {
|
| 465 |
$any_label = variable_get('views_exposed_filter_any_label', 'old_any') == 'old_any' ? t('<Any>') : t('- Any -');
|
| 466 |
$form['#options'] = array('All' => $any_label) + $form['#options'];
|
| 467 |
$form['#default_value'] = 'All';
|
| 468 |
}
|
| 469 |
}
|
| 470 |
|
| 471 |
/**
|
| 472 |
* Tell the renderer about our exposed form. This only needs to be
|
| 473 |
* overridden for particularly complex forms. And maybe not even then.
|
| 474 |
*/
|
| 475 |
function exposed_info() {
|
| 476 |
if (empty($this->options['exposed'])) {
|
| 477 |
return;
|
| 478 |
}
|
| 479 |
|
| 480 |
return array(
|
| 481 |
'operator' => $this->options['expose']['operator'],
|
| 482 |
'value' => $this->options['expose']['identifier'],
|
| 483 |
'label' => $this->options['expose']['label'],
|
| 484 |
);
|
| 485 |
}
|
| 486 |
|
| 487 |
/**
|
| 488 |
* Check to see if input from the exposed filters should change
|
| 489 |
* the behavior of this filter.
|
| 490 |
*/
|
| 491 |
function accept_exposed_input($input) {
|
| 492 |
if (empty($this->options['exposed'])) {
|
| 493 |
return TRUE;
|
| 494 |
}
|
| 495 |
|
| 496 |
|
| 497 |
if (!empty($this->options['expose']['use_operator']) && !empty($this->options['expose']['operator']) && isset($input[$this->options['expose']['operator']])) {
|
| 498 |
$this->operator = $input[$this->options['expose']['operator']];
|
| 499 |
}
|
| 500 |
|
| 501 |
if (!empty($this->options['expose']['identifier'])) {
|
| 502 |
$value = $input[$this->options['expose']['identifier']];
|
| 503 |
|
| 504 |
// Various ways to check for the absence of optional input.
|
| 505 |
if (!empty($this->options['expose']['optional'])) {
|
| 506 |
if ($value == 'All' || $value === array()) {
|
| 507 |
return FALSE;
|
| 508 |
}
|
| 509 |
|
| 510 |
if (!empty($this->no_single) && $value === '') {
|
| 511 |
return FALSE;
|
| 512 |
}
|
| 513 |
}
|
| 514 |
|
| 515 |
|
| 516 |
if (isset($value)) {
|
| 517 |
$this->value = $value;
|
| 518 |
if (!empty($this->options['expose']['single'])) {
|
| 519 |
$this->value = array($value);
|
| 520 |
}
|
| 521 |
}
|
| 522 |
else {
|
| 523 |
return FALSE;
|
| 524 |
}
|
| 525 |
}
|
| 526 |
|
| 527 |
return TRUE;
|
| 528 |
}
|
| 529 |
|
| 530 |
function store_exposed_input($input, $status) {
|
| 531 |
if (empty($this->options['exposed']) || empty($this->options['expose']['identifier'])) {
|
| 532 |
return TRUE;
|
| 533 |
}
|
| 534 |
|
| 535 |
if (empty($this->options['expose']['remember'])) {
|
| 536 |
return;
|
| 537 |
}
|
| 538 |
|
| 539 |
// Figure out which display id is responsible for the filters, so we
|
| 540 |
// know where to look for session stored values.
|
| 541 |
$display_id = ($this->view->display_handler->is_defaulted('filters')) ? 'default' : $this->view->current_display;
|
| 542 |
|
| 543 |
// shortcut test.
|
| 544 |
$operator = !empty($this->options['expose']['use_operator']) && !empty($this->options['expose']['operator']);
|
| 545 |
|
| 546 |
// false means that we got a setting that means to recuse ourselves,
|
| 547 |
// so we should erase whatever happened to be there.
|
| 548 |
if (!$status && isset($_SESSION['views'][$this->view->name][$display_id])) {
|
| 549 |
$session = &$_SESSION['views'][$this->view->name][$display_id];
|
| 550 |
if ($operator && isset($session[$this->options['expose']['operator']])) {
|
| 551 |
unset($session[$this->options['expose']['operator']]);
|
| 552 |
}
|
| 553 |
|
| 554 |
if (isset($session[$this->options['expose']['identifier']])) {
|
| 555 |
unset($session[$this->options['expose']['identifier']]);
|
| 556 |
}
|
| 557 |
}
|
| 558 |
|
| 559 |
if ($status) {
|
| 560 |
if (!isset($_SESSION['views'][$this->view->name][$display_id])) {
|
| 561 |
$_SESSION['views'][$this->view->name][$display_id] = array();
|
| 562 |
}
|
| 563 |
|
| 564 |
$session = &$_SESSION['views'][$this->view->name][$display_id];
|
| 565 |
|
| 566 |
if ($operator && isset($input[$this->options['expose']['operator']])) {
|
| 567 |
$session[$this->options['expose']['operator']] = $input[$this->options['expose']['operator']];
|
| 568 |
}
|
| 569 |
|
| 570 |
$session[$this->options['expose']['identifier']] = $input[$this->options['expose']['identifier']];
|
| 571 |
}
|
| 572 |
}
|
| 573 |
|
| 574 |
/**
|
| 575 |
* Add this filter to the query.
|
| 576 |
*
|
| 577 |
* Due to the nature of fapi, the value and the operator have an unintended
|
| 578 |
* level of indirection. You will find them in $this->operator
|
| 579 |
* and $this->value respectively.
|
| 580 |
*/
|
| 581 |
function query() {
|
| 582 |
$this->ensure_my_table();
|
| 583 |
$this->query->add_where($this->options['group'], "$this->table_alias.$this->real_field " . $this->operator . " '%s'", $this->value);
|
| 584 |
}
|
| 585 |
}
|
| 586 |
|
| 587 |
|
| 588 |
/**
|
| 589 |
* A special handler to take the place of missing or broken handlers.
|
| 590 |
*/
|
| 591 |
class views_handler_filter_broken extends views_handler_filter {
|
| 592 |
function ui_name($short = FALSE) {
|
| 593 |
return t('Broken/missing handler');
|
| 594 |
}
|
| 595 |
|
| 596 |
function ensure_my_table() { /* No table to ensure! */ }
|
| 597 |
function query() { /* No query to run */ }
|
| 598 |
function options_form(&$form, &$form_state) {
|
| 599 |
$form['markup'] = array(
|
| 600 |
'#prefix' => '<div class="form-item description">',
|
| 601 |
'#value' => t('The handler for this item is broken or missing and cannot be used. If a module provided the handler and was disabled, re-enabling the module may restore it. Otherwise, you should probably delete this item.'),
|
| 602 |
);
|
| 603 |
}
|
| 604 |
|
| 605 |
/**
|
| 606 |
* Determine if the handler is considered 'broken'
|
| 607 |
*/
|
| 608 |
function broken() { return TRUE; }
|
| 609 |
}
|
| 610 |
|
| 611 |
|
| 612 |
/**
|
| 613 |
* @}
|
| 614 |
*/
|
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