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<?php |
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/* |
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Plugin Name: Presentations |
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Plugin URI: http://automattic.com/wordpress-plugins/ |
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Description: Presentations plugin based on the work done by <a href="http://darylkoop.com/">Daryl Koopersmith</a>. Powered by jmpress.js |
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Version: 0.2 |
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Author: Automattic |
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Author URI: http://automattic.com/wordpress-plugins/ |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* Known issues: |
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* |
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* - IE 7/8 are not supported by jmpress and presentations will not work |
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* - IE 9 will not animate transitions at all, though it's possible to at least |
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* switch between slides. |
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* - Infinite Scroll themes will not load presentations properly unless the post |
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* happens to be on the first loaded page. The permalink page will function |
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* properly, however. |
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* - Exiting fullscreen mode will not properly reset the scroll locations in Safari |
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*/ |
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/* |
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HOW TO: How the plugin settings are organized and which features are supported. |
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The entire presentation should be wrapped with a [presentation] shortcode, and every |
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individual slide should be wrapped with a [slide] shortcode. Any settings supported |
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by [slide] can be set into [presentation], which will apply that setting for the entire |
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presentation unless overridden by individual slides. |
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- [presentation] only settings: |
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- duration: transition durations, default is one second. |
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- height: content height, default is 400px |
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- width: content width, default is 550px |
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- autoplay: delay between transitions in seconds, default 3s |
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when set the presentation will automatically transition between slides |
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as long as the presentation remains in focus |
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- [slide] settings: |
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- transition: specifies where the next slide will be placed relative |
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to the last one before it. Supported values are "up", "down" |
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"left", "right", or "none". Default value is "down". |
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- scale: scales the content relative to other slides, default value is one |
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- rotate: rotates the content by the specified degrees, default is zero |
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- fade: slides will fade in and out during transition. Values of "on" or |
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"true" will enable fading, while values of "no" or "false" will |
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disable it. Default value is "on" |
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- bgcolor: specifies a background color for the slides. Any CSS valid value |
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is permitted. Default color is transparent. |
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- bgimg: specifies an image url which will fill the background. Image is |
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set to fill the background 100% width and height |
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- fadebullets: any html <li> tags will start out with an opacity of 0 and any |
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subsequent slide transitions will show the bullets one by one |
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*/ |
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if ( ! class_exists( 'Presentations' ) ) : |
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class Presentations { |
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private $presentation_settings; |
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private $presentation_initialized; |
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private $scripts_and_style_included; |
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/** |
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* Constructor |
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*/ |
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function __construct() { |
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// Bail without 3.0. |
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if ( ! function_exists( '__return_false' ) ) { |
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return; |
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} |
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$this->presentation_initialized = false; |
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$this->scripts_and_style_included = false; |
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// Registers shortcodes |
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add_action( 'wp_head', array( &$this, 'add_scripts' ), 1 ); |
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add_shortcode( 'presentation', array( &$this, 'presentation_shortcode' ) ); |
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add_shortcode( 'slide', array( &$this, 'slide_shortcode' ) ); |
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} |
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function add_scripts() { |
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$this->scripts_and_style_included = false; |
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if ( empty( $GLOBALS['posts'] ) || ! is_array( $GLOBALS['posts'] ) ) { |
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return; |
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} |
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View Code Duplication |
foreach ( $GLOBALS['posts'] as $p ) { |
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if ( has_shortcode( $p->post_content, 'presentation' ) ) { |
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$this->scripts_and_style_included = true; |
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break; |
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} |
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} |
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if ( ! $this->scripts_and_style_included ) { |
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return; |
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} |
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$plugin = plugin_dir_url( __FILE__ ); |
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// Add CSS |
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wp_enqueue_style( 'presentations', $plugin . 'css/style.css' ); |
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// Add JavaScript |
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wp_enqueue_script( 'jquery' ); |
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wp_enqueue_script( 'jmpress', $plugin . 'js/jmpress.min.js', array( 'jquery' ), '0.4.5', true ); |
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wp_enqueue_script( 'presentations', $plugin . 'js/main.js', array( 'jquery', 'jmpress' ), false, true ); |
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} |
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function presentation_shortcode( $atts, $content = '' ) { |
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// Mark that we've found a valid [presentation] shortcode |
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$this->presentation_initialized = true; |
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$atts = shortcode_atts( |
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array( |
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'duration' => '', |
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'height' => '', |
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'width' => '', |
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'bgcolor' => '', |
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'bgimg' => '', |
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'autoplay' => '', |
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// Settings |
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'transition' => '', |
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'scale' => '', |
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'rotate' => '', |
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'fade' => '', |
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'fadebullets' => '', |
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), $atts, 'presentation' |
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); |
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$this->presentation_settings = array( |
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'transition' => 'down', |
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'scale' => 1, |
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'rotate' => 0, |
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'fade' => 'on', |
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'fadebullets' => 0, |
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'last' => array( |
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'x' => 0, |
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'y' => 0, |
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'scale' => 1, |
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'rotate' => 0, |
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), |
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); |
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// Set the presentation-wide settings |
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View Code Duplication |
if ( '' != trim( $atts['transition'] ) ) { |
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$this->presentation_settings['transition'] = $atts['transition']; |
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} |
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View Code Duplication |
if ( '' != trim( $atts['scale'] ) ) { |
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$this->presentation_settings['scale'] = floatval( $atts['scale'] ); |
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} |
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View Code Duplication |
if ( '' != trim( $atts['rotate'] ) ) { |
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$this->presentation_settings['rotate'] = floatval( $atts['rotate'] ); |
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} |
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View Code Duplication |
if ( '' != trim( $atts['fade'] ) ) { |
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$this->presentation_settings['fade'] = $atts['fade']; |
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} |
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View Code Duplication |
if ( '' != trim( $atts['fadebullets'] ) ) { |
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$this->presentation_settings['fadebullets'] = $atts['fadebullets']; |
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} |
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// Set any settings the slides don't care about |
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if ( '' != trim( $atts['duration'] ) ) { |
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$duration = floatval( $atts['duration'] ) . 's'; |
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} else { |
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$duration = '1s'; |
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} |
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// Autoplay durations are set in milliseconds |
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if ( '' != trim( $atts['autoplay'] ) ) { |
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$autoplay = floatval( $atts['autoplay'] ) * 1000; |
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} else { |
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$autoplay = 0; |
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} // No autoplay |
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// Set the presentation size as specified or with some nicely sized dimensions |
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View Code Duplication |
if ( '' != trim( $atts['width'] ) ) { |
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$this->presentation_settings['width'] = intval( $atts['width'] ); |
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} else { |
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$this->presentation_settings['width'] = 480; |
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} |
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View Code Duplication |
if ( '' != trim( $atts['height'] ) ) { |
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$this->presentation_settings['height'] = intval( $atts['height'] ); |
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} else { |
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$this->presentation_settings['height'] = 370; |
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} |
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// Hide the content by default in case the scripts fail |
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$style = 'display: none; width: ' . $this->presentation_settings['width'] . 'px; height: ' . $this->presentation_settings['height'] . 'px;'; |
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// Check for background color XOR background image |
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// Use a white background if nothing specified |
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if ( preg_match( '/https?\:\/\/[^\'"\s]*/', $atts['bgimg'], $matches ) ) { |
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$style .= ' background-image: url("' . esc_url( $matches[0] ) . '");'; |
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View Code Duplication |
} else if ( '' != trim( $atts['bgcolor'] ) ) { |
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$style .= ' background-color: ' . esc_attr( $atts['bgcolor'] ) . ';'; |
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} else { |
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$style .= ' background-color: #fff;'; |
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} |
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// Not supported message style is inlined incase the style sheet doesn't get included |
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$out = "<section class='presentation-wrapper'>"; |
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$out .= "<p class='not-supported-msg' style='display: inherit; padding: 25%; text-align: center;'>"; |
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$out .= __( 'This slideshow could not be started. Try refreshing the page or viewing it in another browser.', 'jetpack' ) . '</p>'; |
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// Bail out unless the scripts were added |
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if ( $this->scripts_and_style_included ) { |
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$out .= sprintf( |
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'<div class="presentation" duration="%s" data-autoplay="%s" style="%s">', |
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esc_attr( $duration ), |
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esc_attr( $autoplay ), |
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esc_attr( $style ) |
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); |
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$out .= "<div class='nav-arrow-left'></div>"; |
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$out .= "<div class='nav-arrow-right'></div>"; |
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$out .= "<div class='nav-fullscreen-button'></div>"; |
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if ( $autoplay ) { |
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$out .= '<div class="autoplay-overlay" style="display: none;"><p class="overlay-msg">'; |
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$out .= __( 'Click to autoplay the presentation!', 'jetpack' ); |
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$out .= '</p></div>'; |
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} |
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$out .= do_shortcode( $content ); |
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} |
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$out .= '</section>'; |
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$this->presentation_initialized = false; |
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return $out; |
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} |
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function slide_shortcode( $atts, $content = '' ) { |
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// Bail out unless wrapped by a [presentation] shortcode |
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if ( ! $this->presentation_initialized ) { |
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return $content; |
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} |
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$atts = shortcode_atts( |
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array( |
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'transition' => '', |
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'scale' => '', |
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'rotate' => '', |
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'fade' => '', |
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'fadebullets' => '', |
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'bgcolor' => '', |
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'bgimg' => '', |
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), $atts, 'slide' |
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); |
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// Determine positioning based on transition |
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View Code Duplication |
if ( '' == trim( $atts['transition'] ) ) { |
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$atts['transition'] = $this->presentation_settings['transition']; |
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} |
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// Setting the content scale |
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View Code Duplication |
if ( '' == trim( $atts['scale'] ) ) { |
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$atts['scale'] = $this->presentation_settings['scale']; |
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} |
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if ( '' == trim( $atts['scale'] ) ) { |
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$scale = 1; |
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} else { |
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$scale = floatval( $atts['scale'] ); |
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} |
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if ( $scale < 0 ) { |
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$scale *= -1; |
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} |
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// Setting the content rotation |
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View Code Duplication |
if ( '' == trim( $atts['rotate'] ) ) { |
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$atts['rotate'] = $this->presentation_settings['rotate']; |
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} |
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if ( '' == trim( $atts['rotate'] ) ) { |
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$rotate = 0; |
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} else { |
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$rotate = floatval( $atts['rotate'] ); |
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} |
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// Setting if the content should fade |
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View Code Duplication |
if ( '' == trim( $atts['fade'] ) ) { |
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$atts['fade'] = $this->presentation_settings['fade']; |
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313
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} |
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314
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315
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if ( 'on' == $atts['fade'] || 'true' == $atts['fade'] ) { |
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316
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$fade = 'fade'; |
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317
|
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} else { |
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318
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$fade = ''; |
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319
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} |
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320
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|
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321
|
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// Setting if bullets should fade on step changes |
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322
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|
View Code Duplication |
if ( '' == trim( $atts['fadebullets'] ) ) { |
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323
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$atts['fadebullets'] = $this->presentation_settings['fadebullets']; |
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324
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} |
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325
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326
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if ( 'on' == $atts['fadebullets'] || 'true' == $atts['fadebullets'] ) { |
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327
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$fadebullets = 'fadebullets'; |
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328
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} else { |
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329
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$fadebullets = ''; |
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330
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} |
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331
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|
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332
|
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$coords = $this->get_coords( |
|
333
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array( |
|
334
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'transition' => $atts['transition'], |
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335
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'scale' => $scale, |
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336
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'rotate' => $rotate, |
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337
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) |
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338
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); |
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339
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340
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$x = $coords['x']; |
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341
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$y = $coords['y']; |
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342
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343
|
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// Check for background color XOR background image |
|
344
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// Use a white background if nothing specified |
|
345
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if ( preg_match( '/https?\:\/\/[^\'"\s]*/', $atts['bgimg'], $matches ) ) { |
|
346
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$style = 'background-image: url("' . esc_url( $matches[0] ) . '");'; |
|
347
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View Code Duplication |
} else if ( '' != trim( $atts['bgcolor'] ) ) { |
|
348
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$style = 'background-color: ' . esc_attr( $atts['bgcolor'] ) . ';'; |
|
349
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} else { |
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350
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$style = ''; |
|
351
|
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} |
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352
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353
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// Put everything together and let jmpress do the magic! |
|
354
|
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|
$out = sprintf( |
|
355
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'<div class="step %s %s" data-x="%s" data-y="%s" data-scale="%s" data-rotate="%s" style="%s">', |
|
356
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|
esc_attr( $fade ), |
|
357
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|
esc_attr( $fadebullets ), |
|
358
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|
esc_attr( $x ), |
|
359
|
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|
esc_attr( $y ), |
|
360
|
|
|
esc_attr( $scale ), |
|
361
|
|
|
esc_attr( $rotate ), |
|
362
|
|
|
esc_attr( $style ) |
|
363
|
|
|
); |
|
364
|
|
|
|
|
365
|
|
|
$out .= '<div class="slide-content">'; |
|
366
|
|
|
$out .= do_shortcode( $content ); |
|
367
|
|
|
$out .= '</div></div>'; |
|
368
|
|
|
|
|
369
|
|
|
return $out; |
|
370
|
|
|
} |
|
371
|
|
|
|
|
372
|
|
|
/** |
|
373
|
|
|
* Determines the position of the next slide based on the position and scaling of the previous slide. |
|
374
|
|
|
* |
|
375
|
|
|
* @param array $args : an array with the following key-value pairs |
|
376
|
|
|
* string $transition: the transition name, "up", "down", "left", or "right" |
|
377
|
|
|
* float $scale: the scale of the next slide (used to determine the position of the slide after that) |
|
378
|
|
|
* |
|
379
|
|
|
* @return array with the 'x' and 'y' coordinates of the slide |
|
380
|
|
|
*/ |
|
381
|
|
|
function get_coords( $args ) { |
|
382
|
|
|
if ( 0 == $args['scale'] ) { |
|
383
|
|
|
$args['scale'] = 1; |
|
384
|
|
|
} |
|
385
|
|
|
|
|
386
|
|
|
$width = $this->presentation_settings['width']; |
|
387
|
|
|
$height = $this->presentation_settings['height']; |
|
388
|
|
|
$last = $this->presentation_settings['last']; |
|
389
|
|
|
$scale = $last['scale']; |
|
390
|
|
|
|
|
391
|
|
|
$next = array( |
|
392
|
|
|
'x' => $last['x'], |
|
393
|
|
|
'y' => $last['y'], |
|
394
|
|
|
'scale' => $args['scale'], |
|
395
|
|
|
'rotate' => $args['rotate'], |
|
396
|
|
|
); |
|
397
|
|
|
|
|
398
|
|
|
// All angles are measured from the vertical axis, so everything is backwards! |
|
399
|
|
|
$diagAngle = atan2( $width, $height ); |
|
400
|
|
|
$diagonal = sqrt( pow( $width, 2 ) + pow( $height, 2 ) ); |
|
401
|
|
|
|
|
402
|
|
|
// We offset the angles by the angle formed by the diagonal so that |
|
403
|
|
|
// we can multiply the sines directly against the diagonal length |
|
404
|
|
|
$theta = deg2rad( $last['rotate'] ) - $diagAngle; |
|
405
|
|
|
$phi = deg2rad( $next['rotate'] ) - $diagAngle; |
|
406
|
|
|
|
|
407
|
|
|
// We start by displacing by the slide dimensions |
|
408
|
|
|
$totalHorizDisp = $width * $scale; |
|
409
|
|
|
$totalVertDisp = $height * $scale; |
|
410
|
|
|
|
|
411
|
|
|
// If the previous slide was rotated, we add the incremental offset from the rotation |
|
412
|
|
|
// Namely the difference between the regular dimension (no rotation) and the component |
|
413
|
|
|
// of the diagonal for that angle |
|
414
|
|
|
$totalHorizDisp += ( ( ( abs( sin( $theta ) ) * $diagonal ) - $width ) / 2 ) * $scale; |
|
415
|
|
|
$totalVertDisp += ( ( ( abs( cos( $theta ) ) * $diagonal ) - $height ) / 2 ) * $scale; |
|
416
|
|
|
|
|
417
|
|
|
// Similarly, we check if the current slide has been rotated and add whatever additional |
|
418
|
|
|
// offset has been added. This is so that two rotated corners don't clash with each other. |
|
419
|
|
|
// Note: we are checking the raw angle relative to the vertical axis, NOT the diagonal angle. |
|
420
|
|
|
if ( 0 !== $next['rotate'] % 180 ) { |
|
421
|
|
|
$totalHorizDisp += ( abs( ( sin( $phi ) * $diagonal ) - $width ) / 2 ) * $next['scale']; |
|
422
|
|
|
$totalVertDisp += ( abs( ( cos( $phi ) * $diagonal ) - $height ) / 2 ) * $next['scale']; |
|
423
|
|
|
} |
|
424
|
|
|
|
|
425
|
|
|
switch ( trim( $args['transition'] ) ) { |
|
426
|
|
|
case 'none': |
|
427
|
|
|
break; |
|
428
|
|
|
|
|
429
|
|
|
case 'left': |
|
430
|
|
|
$next['x'] -= $totalHorizDisp; |
|
431
|
|
|
break; |
|
432
|
|
|
|
|
433
|
|
|
case 'right': |
|
434
|
|
|
$next['x'] += $totalHorizDisp; |
|
435
|
|
|
break; |
|
436
|
|
|
|
|
437
|
|
|
case 'up': |
|
438
|
|
|
$next['y'] -= $totalVertDisp; |
|
439
|
|
|
break; |
|
440
|
|
|
|
|
441
|
|
|
case 'down': |
|
442
|
|
|
default: |
|
443
|
|
|
$next['y'] += $totalVertDisp; |
|
444
|
|
|
break; |
|
445
|
|
|
} |
|
446
|
|
|
|
|
447
|
|
|
$this->presentation_settings['last'] = $next; |
|
448
|
|
|
|
|
449
|
|
|
return $next; |
|
450
|
|
|
} |
|
451
|
|
|
} |
|
452
|
|
|
|
|
453
|
|
|
$GLOBALS['presentations'] = new Presentations(); |
|
454
|
|
|
endif; |
|
455
|
|
|
|
Automattic /
jetpack
