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<?php
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// $Id: views_handler_filter_date.inc,v 1.2 2008/11/19 20:52:59 merlinofchaos Exp $
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/**
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* Filter to handle dates stored as a timestamp.
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*/
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class views_handler_filter_date extends views_handler_filter_numeric {
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function option_definition() {
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$options = parent::option_definition();
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// value is already set up properly, we're just adding our new field to it.
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$options['value']['type']['default'] = 'date';
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return $options;
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}
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/**
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* Add a type selector to the value form
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*/
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function value_form(&$form, &$form_state) {
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if (empty($form_state['exposed'])) {
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$form['value']['type'] = array(
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'#type' => 'radios',
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'#title' => t('Value type'),
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'#options' => array(
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'date' => t('A date in any machine readable format. CCYY-MM-DD HH:MM:SS is preferred.'),
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'offset' => t('An offset from the current time such as "+1 day" or "-2 hours and 30 minutes"'),
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),
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'#default_value' => !empty($this->value['type']) ? $this->value['type'] : 'date',
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);
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}
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parent::value_form($form, $form_state);
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}
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function options_validate(&$form, &$form_state) {
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parent::options_validate($form, $form_state);
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if (!empty($form_state['values']['options']['expose']['optional'])) {
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// Who cares what the value is if it's exposed and optional.
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return;
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}
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$this->validate_valid_time($form['value'], $form_state['values']['options']['operator'], $form_state['values']['options']['value']);
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}
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function exposed_validate(&$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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if (!empty($this->options['expose']['optional'])) {
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// Who cares what the value is if it's exposed and optional.
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return;
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}
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$value = &$form_state['values'][$this->options['expose']['identifier']];
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if (!empty($this->options['expose']['use_operator']) && !empty($this->options['expose']['operator'])) {
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$operator = $form_state['values'][$this->options['expose']['operator']];
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}
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else {
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$operator = $this->operator;
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}
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$this->validate_valid_time($this->options['expose']['identifier'], $operator, $value);
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}
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/**
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* Validate that the time values convert to something usable.
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*/
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function validate_valid_time(&$form, $operator, $value) {
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$operators = $this->operators();
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if ($operators[$operator]['values'] == 1) {
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$convert = strtotime($value['value']);
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if ($convert == -1 || $convert === FALSE) {
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form_error($form['value'], t('Invalid date format.'));
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}
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}
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elseif ($operators[$operator]['values'] == 2) {
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$min = strtotime($value['min']);
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if ($min == -1 || $min === FALSE) {
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form_error($form['min'], t('Invalid date format.'));
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}
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$max = strtotime($value['max']);
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if ($max == -1 || $max === FALSE) {
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form_error($form['max'], t('Invalid date format.'));
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}
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}
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}
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function accept_exposed_input($input) {
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if (empty($this->options['exposed'])) {
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return TRUE;
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}
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// Store this because it will get overwritten.
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$type = $this->value['type'];
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$rc = parent::accept_exposed_input($input);
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// Don't filter if value(s) are empty.
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$operators = $this->operators();
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if (!empty($this->options['expose']['use_operator']) && !empty($this->options['expose']['operator'])) {
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$operator = $input[$this->options['expose']['operator']];
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}
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else {
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$operator = $this->operator;
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}
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if ($operators[$operator]['values'] == 1) {
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if ($this->value['value'] == '') {
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return FALSE;
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}
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}
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else {
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if ($this->value['min'] == '' || $this->value['max'] == '') {
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return FALSE;
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}
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}
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// restore what got overwritten by the parent.
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$this->value['type'] = $type;
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return $rc;
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}
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function op_between($field) {
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if ($this->operator == 'between') {
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$a = intval(strtotime($this->value['min'], 0));
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$b = intval(strtotime($this->value['max'], 0));
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}
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else {
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$a = intval(strtotime($this->value['max'], 0));
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$b = intval(strtotime($this->value['min'], 0));
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}
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if ($this->value['type'] == 'offset') {
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$a = '***CURRENT_TIME***' . sprintf('%+d', $a); // keep sign
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$b = '***CURRENT_TIME***' . sprintf('%+d', $b); // keep sign
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}
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// %s is safe here because strtotime scrubbed the input and we might
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// have a string if using offset.
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$this->query->add_where($this->options['group'], "$field >= %s", $a);
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$this->query->add_where($this->options['group'], "$field <= %s", $b);
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}
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function op_simple($field) {
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$value = intval(strtotime($this->value['value'], 0));
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if (!empty($this->value['type']) && $this->value['type'] == 'offset') {
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$value = '***CURRENT_TIME***' . sprintf('%+d', $value); // keep sign
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}
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$this->query->add_where($this->options['group'], "$field $this->operator %s", $value);
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}
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}
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