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<?php |
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|
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/* |
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* the language switcher widget |
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* |
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* @since 0.1 |
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*/ |
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class PLL_Widget_Languages extends WP_Widget { |
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|
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/* |
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* constructor |
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* |
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* @since 0.1 |
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*/ |
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function __construct() { |
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parent::__construct('polylang', __('Language Switcher', 'polylang'), array( 'description' => __( 'Displays a language switcher', 'polylang'))); |
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} |
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|
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/* |
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* displays the widget |
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* |
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* @since 0.1 |
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* |
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* @param array $args Display arguments including before_title, after_title, before_widget, and after_widget. |
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* @param array $instance The settings for the particular instance of the widget |
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*/ |
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function widget($args, $instance) { |
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global $polylang; |
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if (!(isset($polylang) && $polylang->model->get_languages_list() && $list = pll_the_languages(array_merge($instance, array('echo' => 0))))) |
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return; |
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|
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extract($args); |
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extract($instance); |
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|
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echo "$before_widget\n"; |
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if ($title = apply_filters('widget_title', $title, $instance, $this->id_base)) |
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echo $before_title . $title . $after_title; |
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echo $dropdown ? $list : "<ul>\n" . $list . "</ul>\n"; |
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echo "$after_widget\n"; |
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|
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// javascript to switch the language when using a dropdown list |
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if ($dropdown) { |
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foreach ($polylang->model->get_languages_list() as $language) { |
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$url = $force_home || ($url = $polylang->links->get_translation_url($language)) == null ? $polylang->links->get_home_url($language) : $url; |
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$urls[] = '"'.esc_js($language->slug).'":"'.esc_url($url).'"'; |
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} |
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|
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$urls = implode(',', $urls); |
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|
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$js = " |
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<script type='text/javascript'> |
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//<![CDATA[ |
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var urls = {{$urls}}; |
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var d = document.getElementById('lang_choice'); |
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d.onchange = function() { |
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for (var i in urls) { |
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if (this.value == i) |
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location.href = urls[i]; |
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} |
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} |
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//]]> |
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</script>"; |
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|
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echo $js; |
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} |
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} |
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|
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/* |
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* updates the widget options |
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* |
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* @since 0.4 |
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* |
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* @param array $new_instance New settings for this instance as input by the user via form() |
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* @param array $old_instance Old settings for this instance |
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* @return array Settings to save or bool false to cancel saving |
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*/ |
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function update( $new_instance, $old_instance ) { |
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$instance['title'] = strip_tags($new_instance['title']); |
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foreach (array_keys(PLL_Switcher::get_switcher_options('widget')) as $key) |
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$instance[$key] = !empty($new_instance[$key]) ? 1 : 0; |
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|
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return $instance; |
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} |
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|
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/* |
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* displays the widget form |
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* |
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* @since 0.4 |
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* |
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* @param array $instance Current settings |
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*/ |
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function form($instance) { |
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// default values |
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$instance = wp_parse_args( (array)$instance, array_merge(array('title' => ''), PLL_Switcher::get_switcher_options('widget', 'default')) ); |
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|
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// title |
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$title = sprintf( |
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'<p><label for="%1$s">%2$s</label><input class="widefat" id="%1$s" name="%3$s" type="text" value="%4$s" /></p>', |
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$this->get_field_id('title'), |
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__('Title:', 'polylang'), |
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$this->get_field_name('title'), |
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esc_attr($instance['title']) |
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); |
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|
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$fields = ''; |
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foreach (PLL_Switcher::get_switcher_options('widget') as $key => $str) |
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$fields .= sprintf( |
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'<div class = "%5$s" %6$s><input type="checkbox" class="checkbox" id="%1$s" name="%2$s" %3$s/> <label for="%1$s">%4$s</label></div>', |
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$this->get_field_id($key), |
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$this->get_field_name($key), |
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$instance[$key] ? 'checked="checked"' : '', |
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esc_html($str), |
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'dropdown' == $key ? '' : 'no-dropdown-' . $this->id, |
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'dropdown' == $key || empty($instance['dropdown']) ? '' : 'style="display:none;"' |
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); |
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|
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|
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echo $title.'<p>'.$fields.'</p>'; |
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|
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// FIXME echoing script in form is not very clean |
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// but it does not work if enqueued properly : |
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// clicking save on a widget makes this code unreachable for the just saved widget (?!) |
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$this->admin_print_script(); |
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} |
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|
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/* |
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* add javascript to control the language switcher options |
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* |
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* @since 1.3 |
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*/ |
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public function admin_print_script() { |
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static $js = ''; |
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|
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if ($js) |
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return; |
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|
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$js = " |
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<script type='text/javascript'> |
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//<![CDATA[ |
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jQuery(document).ready(function($) { |
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function pll_toggle(a, test) { |
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test ? a.show() : a.hide(); |
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} |
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|
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var widgets = new Array(); |
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$('.widget-id').each( function(){ |
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var this_id = $(this).attr('value'); |
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|
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// remove all options if dropdown is checked |
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$('#widget-'+this_id+'-dropdown').change(function() { |
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pll_toggle($('.no-dropdown-'+this_id), 'checked' != $(this).attr('checked')); |
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}); |
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|
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// disallow unchecking both show names and show flags |
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$('#widget-'+this_id+'-show_flags').change(function() { |
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if ('checked' != $(this).attr('checked')) |
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$('#widget-'+this_id+'-show_names').prop('checked', true); |
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}); |
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|
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}); |
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}); |
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//]]> |
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</script>"; |
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|
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echo $js; |
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} |
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} |
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|
