Uploading version 1.0.9, which includes a new filter

git-svn-id: https://plugins.svn.wordpress.org/external-featured-image/tags/1.0.9@1033004 b8457f37-d9ea-0310-8a92-e5e31aec5664

includes/admin/edit-post.php

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+<?php
+
+// Creating box
+add_action( 'add_meta_boxes', 'nelioefi_add_url_metabox' );
+function nelioefi_add_url_metabox() {
+
+	$excluded_post_types = array(
+		'attachment', 'revision', 'nav_menu_item', 'wpcf7_contact_form',
+	);
+
+	foreach ( get_post_types( '', 'names' ) as $post_type ) {
+		if ( in_array( $post_type, $excluded_post_types ) )
+			continue;
+		add_meta_box(
+			'nelioefi_url_metabox',
+			'External Featured Image',
+			'nelioefi_url_metabox',
+			$post_type,
+			'side',
+			'default'
+		);
+	}
+
+}
+
+function nelioefi_url_metabox( $post ) {
+	$nelioefi_url = get_post_meta( $post->ID, _nelioefi_url(), true );
+	$has_img = strlen( $nelioefi_url ) > 0;
+
+	if ( $has_img ) { ?>
+	<div id="nelioefi_preview_block"><?php
+	} else { ?>
+	<div id="nelioefi_preview_block" style="display:none;"><?php
+	} ?>
+		<div id="nelioefi_image_wrapper" style="<?php
+			echo (
+				'width:100%;' .
+				'max-width:300px;' .
+				'height:200px;' .
+				'margin-top:10px;' .
+				'background:url(' . $nelioefi_url . ') no-repeat center center; ' .
+				'-webkit-background-size:cover;' .
+				'-moz-background-size:cover;' .
+				'-o-background-size:cover;' .
+				'background-size:cover;' );
+			?>">
+		</div>
+
+	<?php
+	if ( strlen( $nelioefi_url ) > 0 ) { ?>
+		<a id="nelioefi_remove_button" href="#" onClick="javascript:nelioefiRemoveFeaturedImage();">Remove featured image</a>
+		<script>
+		function nelioefiRemoveFeaturedImage() {
+			jQuery("#nelioefi_preview_block").hide();
+			jQuery("#nelioefi_image_wrapper").hide();
+			jQuery("#nelioefi_remove_button").hide();
+			jQuery("#nelioefi_url").val('');
+			jQuery("#nelioefi_controls").show();
+		}
+		</script>
+		<?php
+	} ?>
+	</div><?php
+
+	if ( $has_img ) { ?>
+	<div id="nelioefi_controls" style="display:none;"><?php
+	} else { ?>
+	<div id="nelioefi_controls"><?php
+	} ?>
+		<input type="text" placeholder="Image URL" style="width:100%;margin-top:10px;"
+			id="nelioefi_url" name="nelioefi_url"
+			value="<?php echo esc_attr( $nelioefi_url ); ?>" />
+		<div style="text-align:right;margin-top:10px;">
+			<a class="button" id="ext_feat_img-preview" onClick="javascript:nelioefiPreview();">Preview</a>
+			<script>
+			function nelioefiPreview() {
+				jQuery("#nelioefi_preview_block").show();
+				jQuery("#nelioefi_image_wrapper").css('background-image', "url('" + jQuery("#nelioefi_url").val() + "')" );
+				jQuery("#nelioefi_image_wrapper").show();
+			}
+			</script>
+		</div>
+	</div>
+	<?php
+}
+
+add_action( 'save_post', 'nelioefi_save_url' );
+function nelioefi_save_url( $post_ID ) {
+	if ( isset( $_POST['nelioefi_url'] ) )
+		update_post_meta( $post_ID, _nelioefi_url(), strip_tags( $_POST['nelioefi_url'] ) );
+}
+
+
+

includes/admin/nelioab-campaign.php

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+<?php
+
+if ( !function_exists( 'nelioab_campaign_notice' ) ) {
+
+	add_action( 'wp_ajax_nelioab_campaign_dismiss_notice',
+		'nelioab_campaign_dismiss_notice' );
+	function nelioab_campaign_dismiss_notice() {
+		update_option( 'nelioab_campaign_last_dismiss', time() );
+		die();
+	}
+
+	$INTERVAL = 2592000; // 1 MONTH in seconds
+	if ( get_option( 'nelioab_campaign_last_dismiss', 0 ) + $INTERVAL < time() )
+		add_action( 'admin_notices', 'nelioab_campaign_notice' );
+	function nelioab_campaign_notice() {
+		$nelioab_plugin = WP_PLUGIN_DIR . '/nelio-ab-testing/main.php';
+		if ( file_exists( $nelioab_plugin ) )
+			return;
+
+		$message = '';
+		$messages = array();
+		$mailing = 'nelioefi';
+
+		$messages[0] = '<strong>Nelio A/B Testing</strong> will help you ' .
+			'deliver to every reader a <a href="http://wp-abtesting.com/' .
+			'nelio-ab-testing-publishers/?mailing=%1$s">more engaging and ' .
+			'relevant reading experience</a>.';
+
+		$messages[1] = 'Do you want to get more money out of your ' .
+			'site? <strong>Nelio A/B Testing</strong> is a <a href="' .
+			'http://wp-abtesting.com/nelio-ab-testing-business/' .
+			'?mailing=%1$s">native conversion optimization service for ' .
+			'WordPress</a> that will help you improve your site.';
+
+		$messages[2] = 'Do you want to improve your headlines and get ' .
+			'more readers? <strong>Nelio A/B Testing</strong> will help you ' .
+			'decide which headlines are more appealing!';
+
+		$messages[3] = 'If you don\'t know which is the best featured image ' .
+			'for a post, use <strong>Nelio A/B Testing</strong>. It\'ll tell you ' .
+			'which one is more appealing to your users!';
+
+		$messages[4] = 'Have you ever wondered what your visitors do in your ' .
+			'site? Subscribe to <strong>Nelio A/B Testing</strong> for free and ' .
+			'get insightful <a href="http://wp-abtesting.com/heatmaps-teach-us/' .
+			'?mailing=%1$s">Heatmaps and Clickmaps</a>.';
+
+		$message = $messages[mt_rand( 0, count( $messages )-1 )];
+		if ( wp_count_posts( 'post' )->publish > 5 * wp_count_posts( 'page' )->publish )
+			if ( mt_rand( 0, 100 ) < 30 )
+				$message = $messages[0];
+
+		$message .= ' <strong>Check our <a href="http://wp-abtesting.com/' .
+			'subscription-plans/?mailing=%1$s">subscription plans</a> and ' .
+			'try it for free</strong>.';
+
+		$message = sprintf( $message, $mailing );
+		?>
+		<div class="updated">
+			<p style="float:right;font-size:10px;text-align:right;">
+				<a id="dismiss-nelioab-campaign" href="#"><?php _e( 'Dismiss' ); ?></a>
+			</p>
+			<p style="font-size:15px;"><?php echo $message; ?></p>
+			<script style="display:none;" type="text/javascript">
+			(function($) {
+				$('a#dismiss-nelioab-campaign').on('click', function() {
+					$.post( ajaxurl, {action:'nelioab_campaign_dismiss_notice'} );
+					$(this).parent().parent().fadeOut();
+				});
+			})(jQuery);
+			</script>
+		</div>
+		<?php
+	}
+
+}
+

includes/nelio-efi-main.php

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+<?php
+
+/* =========================================================================*/
+/* =========================================================================*/
+/*             SOME USEFUL FUNCTIONS                                        */
+/* =========================================================================*/
+/* =========================================================================*/
+
+/**
+ * This function returns Nelio EFI's post meta key. The key can be changed
+ * using the filter `nelioefi_post_meta_key'
+ */
+function _nelioefi_url() {
+	return apply_filters( 'nelioefi_post_meta_key', '_nelioefi_url' );
+}
+
+
+/**
+ * This function returns whether the post whose id is $id uses an external
+ * featured image or not
+ */
+function uses_nelioefi( $id ) {
+	$image_url = nelioefi_get_thumbnail_src( $id );
+	if ( $image_url === false )
+		return false;
+	else
+		return true;
+}
+
+
+/**
+ * This function returns the URL of the external featured image (if any), or
+ * false otherwise.
+ */
+function nelioefi_get_thumbnail_src( $id ) {
+	$image_url = get_post_meta( $id, _nelioefi_url(), true );
+	if ( !$image_url || strlen( $image_url ) == 0 )
+		return false;
+	return $image_url;
+}
+
+
+/**
+ * This function prints an image tag with the external featured image (if any).
+ * This tag, in fact, has a 1x1 px transparent gif image as its src, and
+ * includes the external featured image via inline CSS styling.
+ */
+function nelioefi_the_html_thumbnail( $id, $size = false, $attr = array() ) {
+	if ( uses_nelioefi( $id ) )
+		echo nelioefi_get_html_thumbnail( $id );
+}
+
+
+/**
+ * This function returns the image tag with the external featured image (if
+ * any). This tag, in fact, has a 1x1 px transparent gif image as its src,
+ * and includes the external featured image via inline CSS styling.
+ */
+function nelioefi_get_html_thumbnail( $id, $size = false, $attr = array() ) {
+	if ( uses_nelioefi( $id ) === false )
+		return false;
+
+	$image_url = nelioefi_get_thumbnail_src( $id );
+
+	$width = false;
+	$height = false;
+	$additional_classes = '';
+
+	global $_wp_additional_image_sizes;
+	if ( is_array( $size ) ) {
+		$width = $size[0];
+		$height = $size[1];
+	}
+	else if ( isset( $_wp_additional_image_sizes[ $size ] ) ) {
+		$width = $_wp_additional_image_sizes[ $size ]['width'];
+		$height = $_wp_additional_image_sizes[ $size ]['height'];
+		$additional_classes = 'attachment-' . $size . ' ';
+	}
+
+	if ( $width && $width > 0 ) $width = "width:${width}px;";
+	else $width = '';
+
+	if ( $height && $height > 0 ) $height = "height:${height}px;";
+	else $height = '';
+
+	if ( isset( $attr['class'] ) )
+		$additional_classes .= $attr['class'];
+
+	$html = sprintf(
+		'<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" ' .
+		'style="background:url(\'%s\') no-repeat center center;' .
+		'-webkit-background-size:cover;' .
+		'-moz-background-size:cover;' .
+		'-o-background-size:cover;' .
+		'background-size:cover;' .
+		'%s%s" class="%s wp-post-image nelioefi" />',
+		$image_url, $width, $height, $additional_classes );
+
+	return $html;
+}
+
+
+/* =========================================================================*/
+/* =========================================================================*/
+/*             ALL HOOKS START HERE                                         */
+/* =========================================================================*/
+/* =========================================================================*/
+
+// Overriding post thumbnail when necessary
+add_filter( 'genesis_pre_get_image', 'nelioefi_genesis_thumbnail', 10, 3 );
+function nelioefi_genesis_thumbnail( $unknown_param, $args, $post ) {
+	$image_url = get_post_meta( $post->ID, _nelioefi_url(), true );
+
+	if ( !$image_url || strlen( $image_url ) == 0 ) {
+		return false;
+	}
+
+	if ( $args['format'] == 'html' ) {
+		$html = nelioefi_replace_thumbnail( '', $post->ID, 0, $args['size'], $args['attr'] );
+		$html = str_replace( 'style="', 'style="min-width:150px;min-height:150px;', $html );
+		return $html;
+	}
+	else {
+		return $image_url;
+	}
+}
+
+
+// Overriding post thumbnail when necessary
+add_filter( 'post_thumbnail_html', 'nelioefi_replace_thumbnail', 10, 5 );
+function nelioefi_replace_thumbnail( $html, $post_id, $post_image_id, $size, $attr ) {
+	if ( uses_nelioefi( $post_id ) )
+		$html = nelioefi_get_html_thumbnail( $post_id, $size, $attr );
+	return $html;
+}
+
+
+add_action( 'the_post', 'nelioefi_fake_featured_image_if_necessary' );
+function nelioefi_fake_featured_image_if_necessary( $post ) {
+	if ( is_array( $post ) ) $post_ID = $post['ID'];
+	else $post_ID = $post->ID;
+
+	$has_nelioefi = strlen( get_post_meta( $post_ID, _nelioefi_url(), true ) ) > 0;
+	$wordpress_featured_image = get_post_meta( $post_ID, '_thumbnail_id', true );
+
+	if ( $has_nelioefi && !$wordpress_featured_image )
+		update_post_meta( $post_ID, '_thumbnail_id', -1 );
+	if ( !$has_nelioefi && $wordpress_featured_image == -1 )
+		delete_post_meta( $post_ID, '_thumbnail_id' );
+}
+
+
+

main.php

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+<?php
+/**
+ * Copyright 2013 Nelio Software S.L.
+ * This script is distributed under the terms of the GNU General Public
+ * License.
+ *
+ * This script is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License. This script is
+ * distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+/*
+ * Plugin Name: Nelio External Featured Image
+ * Description: Use external images as your posts/page featured images. If you use an external service for storing your images and then linking them from your WordPress site, this plugin will perfectly fit your needs.
+ * Version: 1.0.9
+ * Author: Nelio Software
+ * Plugin URI: http://neliosoftware.com
+ * Text Domain: nelioefi
+ */
+
+// ==========================================================================
+// PLUGIN INFORMATION
+// ==========================================================================
+	define( 'NELIOEFI_PLUGIN_VERSION', '1.0.9' );
+	define( 'NELIOEFI_PLUGIN_NAME', 'Nelio External Featured Image' );
+	define( 'NELIOEFI_PLUGIN_DIR_NAME', basename( dirname( __FILE__ ) ) );
+
+// Defining a few important directories
+	define( 'NELIOEFI_ROOT_DIR', rtrim( plugin_dir_path( __FILE__ ), '/' ) );
+	define( 'NELIOEFI_DIR', NELIOEFI_ROOT_DIR . '/includes' );
+	define( 'NELIOEFI_ADMIN_DIR', NELIOEFI_DIR . '/admin' );
+
+// Some URLs...
+	define( 'NELIOEFI_ASSETS_URL', plugins_url() . '/' . NELIOEFI_PLUGIN_DIR_NAME . '/assets' );
+
+
+// REGULAR STUFF
+	require_once( NELIOEFI_DIR . '/nelio-efi-main.php' );
+
+// ADMIN STUFF
+	if ( is_admin() ) {
+		require_once( NELIOEFI_ADMIN_DIR . '/edit-post.php' );
+		require_once( NELIOEFI_ADMIN_DIR . '/nelioab-campaign.php' );
+	}
+