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<?php if ( ! defined('EVENT_ESPRESSO_VERSION')) { exit('No direct script access allowed'); } |
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/** |
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* Class EE_Display_Strategy_Base |
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* |
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* @package Event Espresso |
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* @subpackage core |
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* @author Mike Nelson, Brent Christensen |
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* @since 4.6 |
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* |
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*/ |
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abstract class EE_Display_Strategy_Base extends EE_Form_Input_Strategy_Base{ |
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/** |
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* returns HTML and javascript related to the displaying of this input |
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* @return string |
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*/ |
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abstract public function display(); |
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/** |
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* _remove_chars - takes an incoming string, and removes the string $chars from the end of it, but only if $chars is already there |
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* |
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* @param string $string - the string being processed |
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* @param string $chars - exact string of characters to remove |
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* @return string |
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*/ |
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protected function _remove_chars( $string = '', $chars = '-' ) { |
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$char_length = strlen( $chars ) * -1; |
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// if last three characters of string is " - ", then remove it |
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return substr( $string, $char_length ) === $chars ? substr( $string, 0, $char_length ) : $string; |
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} |
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/** |
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* _append_chars - takes an incoming string, and adds the string $chars to the end of it, but only if $chars is not already there |
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* |
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* @param string $string - the string being processed |
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* @param string $chars - exact string of characters to be added to end of string |
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* @return string |
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*/ |
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protected function _append_chars( $string = '', $chars = '-' ) { |
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return $this->_remove_chars( $string, $chars ) . $chars; |
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} |
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/** |
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* Gets the HTML IDs of all the inputs |
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* @return array |
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*/ |
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public function get_html_input_ids( $add_pound_sign = false ) { |
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return array( $this->get_input()->html_id( $add_pound_sign ) ); |
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} |
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/** |
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* Adds js variables for localization to the $other_js_data. These should be put |
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* in each form's "other_data" javascript object. |
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* |
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* @param array $other_js_data |
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* @return array |
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*/ |
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public function get_other_js_data( $other_js_data = array() ) { |
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return $other_js_data; |
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} |
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/** |
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* Opportunity for this display strategy to call wp_enqueue_script and wp_enqueue_style. |
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* This should be called during wp_enqueue_scripts |
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*/ |
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public function enqueue_js() {} |
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/** |
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* returns string like: attribute="value" |
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* returns an empty string if $value is null |
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* |
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* @param string $tag |
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* @return string |
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*/ |
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protected function opening_tag($tag) |
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{ |
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return "<{$tag}"; |
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} |
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/** |
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* returns string like: attribute="value" |
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* returns an empty string if $value is null |
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* |
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* @param string $tag |
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* @return string |
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*/ |
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protected function closing_tag($tag = '') |
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{ |
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return ! empty($tag) ? "/{$tag}>" : '/>'; |
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} |
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/** |
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* returns string like: ' attribute="value"' |
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* returns an empty string if $value is null |
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* |
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* @param string $attribute |
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* @param string $value |
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* @return string |
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*/ |
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protected function attribute($attribute, $value = '') |
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{ |
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return $value !== null ? " {$attribute}=\"{$value}\"" : ''; |
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} |
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/** |
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* returns string like: ' attribute' if $add is true |
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* |
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* @param string $attribute |
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* @param boolean $add |
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* @return string |
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*/ |
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protected function single_attribute($attribute, $add = true) |
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{ |
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return $add ? " {$attribute}" : ''; |
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} |
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} |