* * 2.0.9 DISABLED the_post HOOK 2020-11-08T1839+0100 * 2.1.0 promoted the 'Continue reading' button from localization to customization 2020-11-08T2146+0100 * 2.1.1 combining identical footnotes: fixed dead links 2020-11-14T2233+0100 * 2.1.1 options fixing ref container layout and referrer vertical alignment 2020-11-16T2024+0100 * 2.1.1 option fixing ref container relative position 2020-11-17T0254+0100 * 2.1.2 options for the other hooks 2020-11-19T1849+0100 * 2.1.4 fix line wrapping of URLs based on pattern, not link element 2020-11-25T0837+0100 * 2.1.4 fix issues with link elements by making them optional 2020-11-26T1051+0100 * 2.1.4 support appending arrow when combining identicals is on 2020-11-26T1633+0100 * 2.1.4 disable or select backlink separator and terminator 2020-11-28T1048+0100 * 2.1.4 optional line breaks to stack enumerated backlinks 2020-11-28T1049+0100 * 2.1.4 ref container column width and tooltip font size settings 2020-12-03T0954+0100 * 2.1.4 scroll offset and duration settings 2020-12-05T0538+0100 * 2.1.4 tooltip display duration settings 2020-12-06T1320+0100 * 2.1.6 option to disable URL line wrapping 2020-12-09T1606+0100 * 2.1.6 add catch-all exclusion to fix URL line wrapping 2020-12-09T1921+0100 * * Last modified: 2020-12-11T1437+0100 */ // If called directly, abort: defined( 'ABSPATH' ) or die; /** * Looks for Footnotes short codes and replaces them. Also displays the Reference Container. * * @author Stefan Herndler * @since 1.5.0 */ class MCI_Footnotes_Task { /** * Contains all footnotes found on current public page. * * @author Stefan Herndler * @since 1.5.0 * @var array */ public static $a_arr_Footnotes = array(); /** * Flag if the display of 'LOVE FOOTNOTES' is allowed on the current public page. * * @author Stefan Herndler * @since 1.5.0 * @var bool */ public static $a_bool_AllowLoveMe = true; /** * Prefix for the Footnote html element ID. * * @author Stefan Herndler * @since 1.5.8 * @var string */ public static $a_str_Prefix = ""; /** * Register WordPress Hooks to replace Footnotes in the content of a public page. * * @author Stefan Herndler * @since 1.5.0 * * Edited for: * 2.0.5 through v2.0.7 changes to priority 2020-11-02T0330+0100..2020-11-06T1344+0100 * 2.1.1 add setting for the_content * 2.1.2 add settings for 4 other hooks 2020-11-19T1248+0100 * * Setting the_content priority to "10" instead of PHP_INT_MAX i.e. 9223372036854775807 * makes the footnotes reference container display beneath the post and above other * features added by other plugins, e.g. related post lists and social buttons. * For YARPP to display related posts below the Footnotes reference container, * priority needs to be at least 1200. * Requested by users: * Documentation: * * Default remains PHP_INT_MAX. * PHP_INT_MAX cannot be reset by leaving the number box empty. because browsers * (WebKit) don’t allow it, so we must resort to -1. */ public function registerHooks() { // get values from settings: $p_int_TheTitlePriority = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_EXPERT_LOOKUP_THE_TITLE_PRIORITY_LEVEL)); $p_int_TheContentPriority = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_EXPERT_LOOKUP_THE_CONTENT_PRIORITY_LEVEL)); $p_int_TheExcerptPriority = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_EXPERT_LOOKUP_THE_EXCERPT_PRIORITY_LEVEL)); $p_int_WidgetTitlePriority = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_EXPERT_LOOKUP_WIDGET_TITLE_PRIORITY_LEVEL)); $p_int_WidgetTextPriority = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_EXPERT_LOOKUP_WIDGET_TEXT_PRIORITY_LEVEL)); // PHP_INT_MAX can be set by -1: $p_int_TheTitlePriority = ($p_int_TheTitlePriority == -1) ? PHP_INT_MAX : $p_int_TheTitlePriority ; $p_int_TheContentPriority = ($p_int_TheContentPriority == -1) ? PHP_INT_MAX : $p_int_TheContentPriority ; $p_int_TheExcerptPriority = ($p_int_TheExcerptPriority == -1) ? PHP_INT_MAX : $p_int_TheExcerptPriority ; $p_int_WidgetTitlePriority = ($p_int_WidgetTitlePriority == -1) ? PHP_INT_MAX : $p_int_WidgetTitlePriority; $p_int_WidgetTextPriority = ($p_int_WidgetTextPriority == -1) ? PHP_INT_MAX : $p_int_WidgetTextPriority ; // append custom css to the header add_filter('wp_head', array($this, "wp_head"), PHP_INT_MAX); // append the love and share me slug to the footer add_filter('wp_footer', array($this, "wp_footer"), PHP_INT_MAX); if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_EXPERT_LOOKUP_THE_TITLE))) { add_filter('the_title', array($this, "the_title"), $p_int_TheTitlePriority); } // custom priority level for reference container relative positioning; default PHP_INT_MAX: if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_EXPERT_LOOKUP_THE_CONTENT))) { add_filter('the_content', array($this, "the_content"), $p_int_TheContentPriority); } if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_EXPERT_LOOKUP_THE_EXCERPT))) { add_filter('the_excerpt', array($this, "the_excerpt"), $p_int_TheExcerptPriority); } if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_EXPERT_LOOKUP_WIDGET_TITLE))) { add_filter('widget_title', array($this, "widget_title"), $p_int_WidgetTitlePriority); } if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_EXPERT_LOOKUP_WIDGET_TEXT))) { add_filter('widget_text', array($this, "widget_text"), $p_int_WidgetTextPriority); } // REMOVED the_post HOOK 2020-11-08T1839+0100 // // // reset stored footnotes when displaying the header self::$a_arr_Footnotes = array(); self::$a_bool_AllowLoveMe = true; } /** * Outputs the custom css to the header of the public page. * * @author Stefan Herndler * @since 1.5.0 */ public function wp_head() { // tooltip: $l_str_FontSizeEnabled = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_MOUSE_OVER_BOX_FONT_SIZE_ENABLED)); $l_str_FontSizeScalar = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_FLO_MOUSE_OVER_BOX_FONT_SIZE_SCALAR); $l_str_FontSizeUnit = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_MOUSE_OVER_BOX_FONT_SIZE_UNIT); $l_str_Color = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_MOUSE_OVER_BOX_COLOR); $l_str_Background = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_MOUSE_OVER_BOX_BACKGROUND); $l_int_BorderWidth = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_MOUSE_OVER_BOX_BORDER_WIDTH); $l_str_BorderColor = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_MOUSE_OVER_BOX_BORDER_COLOR); $l_int_BorderRadius = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_MOUSE_OVER_BOX_BORDER_RADIUS); $l_int_MaxWidth = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_MOUSE_OVER_BOX_MAX_WIDTH); $l_str_BoxShadowColor = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_MOUSE_OVER_BOX_SHADOW_COLOR); // ref container first column width: $l_bool_ColumnWidthEnabled = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_BACKLINKS_COLUMN_WIDTH_ENABLED)); $l_int_ColumnWidthScalar = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_BACKLINKS_COLUMN_WIDTH_SCALAR); $l_str_ColumnWidthUnit = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_BACKLINKS_COLUMN_WIDTH_UNIT); $l_bool_ColumnMaxWidthEnabled = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_BACKLINKS_COLUMN_MAX_WIDTH_ENABLED)); $l_int_ColumnMaxWidthScalar = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_BACKLINKS_COLUMN_MAX_WIDTH_SCALAR); $l_str_ColumnMaxWidthUnit = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_BACKLINKS_COLUMN_MAX_WIDTH_UNIT); if (!empty($l_int_ColumnWidthScalar)) { if ($l_str_ColumnWidthUnit == '%') { if ($l_int_ColumnWidthScalar > 100) { $l_int_ColumnWidthScalar = 100; } } } else { $l_int_ColumnWidthScalar = 0; } if (!empty($l_int_ColumnMaxWidthScalar)) { if ($l_str_ColumnMaxWidthUnit == '%') { if ($l_int_ColumnMaxWidthScalar > 100) { $l_int_ColumnMaxWidthScalar = 100; } } } else { $l_int_ColumnMaxWidthScalar = 0; } ?> get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_ALTERNATIVE))) { echo '\r\n"; }; } /** * Displays the 'LOVE FOOTNOTES' slug if enabled. * * @author Stefan Herndler * @since 1.5.0 * * Edited: * @since 2.2.0 more options 2020-12-11T0506+0100 */ public function wp_footer() { if (MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_POSITION) == "footer") { echo $this->ReferenceContainer(); } // get setting for love and share this plugin $l_str_LoveMeIndex = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_LOVE); // check if the admin allows to add a link to the footer if (empty($l_str_LoveMeIndex) || strtolower($l_str_LoveMeIndex) == "no" || !self::$a_bool_AllowLoveMe) { return; } // set a hyperlink to the word "footnotes" in the Love slug $l_str_LinkedName = sprintf('%s', MCI_Footnotes_Config::C_STR_PLUGIN_PUBLIC_NAME); // get random love me text if (strtolower($l_str_LoveMeIndex) == "random") { $l_str_LoveMeIndex = "text-" . rand(1,7); } switch ($l_str_LoveMeIndex) { // options named wrt backcompat, simplest is default: case "text-1": $l_str_LoveMeText = sprintf(__('I %2$s %1$s', MCI_Footnotes_Config::C_STR_PLUGIN_NAME), $l_str_LinkedName, MCI_Footnotes_Config::C_STR_LOVE_SYMBOL); break; case "text-2": $l_str_LoveMeText = sprintf(__('This website uses the awesome %s plugin.', MCI_Footnotes_Config::C_STR_PLUGIN_NAME), $l_str_LinkedName); break; case "text-4": $l_str_LoveMeText = sprintf('%s %s', $l_str_LinkedName, MCI_Footnotes_Config::C_STR_LOVE_SYMBOL); break; case "text-5": $l_str_LoveMeText = sprintf('%s %s', MCI_Footnotes_Config::C_STR_LOVE_SYMBOL, $l_str_LinkedName); break; case "text-6": $l_str_LoveMeText = sprintf(__('This website uses %s.', MCI_Footnotes_Config::C_STR_PLUGIN_NAME), $l_str_LinkedName); break; case "text-7": $l_str_LoveMeText = sprintf(__('This website uses the %s plugin.', MCI_Footnotes_Config::C_STR_PLUGIN_NAME), $l_str_LinkedName); break; case "text-3": default: $l_str_LoveMeText = sprintf('%s', $l_str_LinkedName); break; } echo sprintf('
%s
', $l_str_LoveMeText); } /** * Replaces footnotes in the post/page title. * * @author Stefan Herndler * @since 1.5.0 * @param string $p_str_Content Widget content. * @return string Content with replaced footnotes. */ public function the_title($p_str_Content) { // appends the reference container if set to "post_end" return $this->exec($p_str_Content, false); } /** * Replaces footnotes in the content of the current page/post. * * @author Stefan Herndler * @since 1.5.0 * @param string $p_str_Content Page/Post content. * @return string Content with replaced footnotes. */ public function the_content($p_str_Content) { // appends the reference container if set to "post_end" return $this->exec($p_str_Content, MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_POSITION) == "post_end" ? true : false); } /** * Replaces footnotes in the excerpt of the current page/post. * * @author Stefan Herndler * @since 1.5.0 * @param string $p_str_Content Page/Post content. * @return string Content with replaced footnotes. */ public function the_excerpt($p_str_Content) { return $this->exec($p_str_Content, false, !MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_IN_EXCERPT))); } /** * Replaces footnotes in the widget title. * * @author Stefan Herndler * @since 1.5.0 * @param string $p_str_Content Widget content. * @return string Content with replaced footnotes. */ public function widget_title($p_str_Content) { // appends the reference container if set to "post_end" return $this->exec($p_str_Content, false); } /** * Replaces footnotes in the content of the current widget. * * @author Stefan Herndler * @since 1.5.0 * @param string $p_str_Content Widget content. * @return string Content with replaced footnotes. */ public function widget_text($p_str_Content) { // appends the reference container if set to "post_end" return $this->exec($p_str_Content, MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_POSITION) == "post_end" ? true : false); } /** * Replaces footnotes in each Content var of the current Post object. * * @author Stefan Herndler * @since 1.5.4 * @param array|WP_Post $p_mixed_Posts */ public function the_post(&$p_mixed_Posts) { // single WP_Post object received if (!is_array($p_mixed_Posts)) { $p_mixed_Posts = $this->replacePostObject($p_mixed_Posts); return; } // array of WP_Post objects received for($l_int_Index = 0; $l_int_Index < count($p_mixed_Posts); $l_int_Index++) { $p_mixed_Posts[$l_int_Index] = $this->replacePostObject($p_mixed_Posts[$l_int_Index]); } } /** * Replace all Footnotes in a WP_Post object. * * @author Stefan Herndler * @since 1.5.6 * @param WP_Post $p_obj_Post * @return WP_Post */ private function replacePostObject($p_obj_Post) { //MCI_Footnotes_Convert::debug($p_obj_Post); $p_obj_Post->post_content = $this->exec($p_obj_Post->post_content); $p_obj_Post->post_content_filtered = $this->exec($p_obj_Post->post_content_filtered); $p_obj_Post->post_excerpt = $this->exec($p_obj_Post->post_excerpt); return $p_obj_Post; } /** * Replaces all footnotes that occur in the given content. * * @author Stefan Herndler * @since 1.5.0 * @param string $p_str_Content Any string that may contain footnotes to be replaced. * @param bool $p_bool_OutputReferences Appends the Reference Container to the output if set to true, default true. * @param bool $p_bool_HideFootnotesText Hide footnotes found in the string. * @return string */ public function exec($p_str_Content, $p_bool_OutputReferences = false, $p_bool_HideFootnotesText = false) { // replace all footnotes in the content, settings are converted to html characters $p_str_Content = $this->search($p_str_Content, true, $p_bool_HideFootnotesText); // replace all footnotes in the content, settings are NOT converted to html characters $p_str_Content = $this->search($p_str_Content, false, $p_bool_HideFootnotesText); // append the reference container if ($p_bool_OutputReferences) { $p_str_Content = $p_str_Content . $this->ReferenceContainer(); } // take a look if the LOVE ME slug should NOT be displayed on this page/post, remove the short code if found if (strpos($p_str_Content, MCI_Footnotes_Config::C_STR_NO_LOVE_SLUG) !== false) { self::$a_bool_AllowLoveMe = false; $p_str_Content = str_replace(MCI_Footnotes_Config::C_STR_NO_LOVE_SLUG, "", $p_str_Content); } // return the content with replaced footnotes and optional reference container append return $p_str_Content; } /** * Replaces all footnotes in the given content and appends them to the static property. * * @author Stefan Herndler * @since 1.5.0 * @param string $p_str_Content Content to be searched for footnotes. * @param bool $p_bool_ConvertHtmlChars html encode settings, default true. * @param bool $p_bool_HideFootnotesText Hide footnotes found in the string. * @return string */ public function search($p_str_Content, $p_bool_ConvertHtmlChars, $p_bool_HideFootnotesText) { // post ID to make everything unique wrt infinite scroll and archive view global $l_int_PostId; $l_int_PostId = get_the_id(); // contains the index for the next footnote on this page $l_int_FootnoteIndex = count(self::$a_arr_Footnotes) + 1; // contains the starting position for the lookup of a footnote $l_int_PosStart = 0; // get start and end tag for the footnotes short code $l_str_StartingTag = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_SHORT_CODE_START); $l_str_EndingTag = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_SHORT_CODE_END); if ($l_str_StartingTag == "userdefined" || $l_str_EndingTag == "userdefined") { $l_str_StartingTag = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_SHORT_CODE_START_USER_DEFINED); $l_str_EndingTag = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_SHORT_CODE_END_USER_DEFINED); } // decode html special chars if ($p_bool_ConvertHtmlChars) { $l_str_StartingTag = htmlspecialchars($l_str_StartingTag); $l_str_EndingTag = htmlspecialchars($l_str_EndingTag); } // if footnotes short code is empty, return the content without changes if (empty($l_str_StartingTag) || empty($l_str_EndingTag)) { return $p_str_Content; } if (!$p_bool_HideFootnotesText) { // load template file if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_ALTERNATIVE))) { $l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "footnote-alternative"); } else { $l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "footnote"); } $l_obj_TemplateTooltip = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "tooltip"); } else { $l_obj_Template = null; $l_obj_TemplateTooltip = null; } // search footnotes short codes in the content do { // get first occurrence of the footnote short code [start] $i_int_len_Content = strlen($p_str_Content); if ($l_int_PosStart > $i_int_len_Content) $l_int_PosStart = $i_int_len_Content; $l_int_PosStart = strpos($p_str_Content, $l_str_StartingTag, $l_int_PosStart); // no short code found, stop here if ($l_int_PosStart === false) { break; } // get first occurrence of a footnote short code [end] $l_int_PosEnd = strpos($p_str_Content, $l_str_EndingTag, $l_int_PosStart); // no short code found, stop here if ($l_int_PosEnd === false) { break; } // calculate the length of the footnote $l_int_Length = $l_int_PosEnd - $l_int_PosStart; // get footnote text $l_str_FootnoteText = substr($p_str_Content, $l_int_PosStart + strlen($l_str_StartingTag), $l_int_Length - strlen($l_str_StartingTag)); // fix line wrapping of URLs (hyperlinked or not) based on pattern, not link element, // to prevent them from hanging out of the tooltip in non-Unicode-compliant user agents. // spare however values of the href and the src arguments! // Even ARIA labels may take an URL as value, so use \w=[\'"] as a catch-all 2020-12-10T1005+0100 // see public.css if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTE_URL_WRAP_ENABLED))) { $l_str_FootnoteText = preg_replace( '#(?$1', $l_str_FootnoteText ); } // Text to be displayed instead of the footnote $l_str_FootnoteReplaceText = ""; // display the footnote referrers and the tooltips: if (!$p_bool_HideFootnotesText) { $l_int_Index = MCI_Footnotes_Convert::Index($l_int_FootnoteIndex, MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_COUNTER_STYLE)); // display only an excerpt of the footnotes text if enabled $l_str_ExcerptText = $l_str_FootnoteText; $l_bool_EnableExcerpt = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_EXCERPT_ENABLED)); $l_int_MaxLength = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_MOUSE_OVER_BOX_EXCERPT_LENGTH)); if ($l_bool_EnableExcerpt) { $l_str_DummyText = strip_tags($l_str_FootnoteText); if (is_int($l_int_MaxLength) && strlen($l_str_DummyText) > $l_int_MaxLength) { $l_str_ExcerptText = substr($l_str_DummyText, 0, $l_int_MaxLength); $l_str_ExcerptText = substr($l_str_ExcerptText, 0, strrpos($l_str_ExcerptText, ' ')); $l_str_ExcerptText .= ' … '; $l_str_ExcerptText .= ''; $l_str_ExcerptText .= MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_TOOLTIP_READON_LABEL); $l_str_ExcerptText .= ''; } } // define the HTML element to use for the referrers: if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_REFERRER_SUPERSCRIPT_TAGS))) { $l_str_SupSpan = 'sup'; } else { $l_str_SupSpan = 'span'; } // determine whether the link element is used, see below in ReferenceContainer() $l_str_LinkSpan = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_LINK_ELEMENT_ENABLED)) ? 'a' : 'span'; // fill in 'templates/public/footnote.html': $l_obj_Template->replace( array( "post_id" => $l_int_PostId, "id" => $l_int_Index, "link-start" => $l_str_LinkSpan == 'a' ? '' : '', "link-end" => $l_str_LinkSpan == 'a' ? '' : '', "sup-span" => $l_str_SupSpan, "before" => MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_STYLING_BEFORE), "index" => $l_int_Index, "after" => MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_STYLING_AFTER), "text" => MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_ENABLED)) ? $l_str_ExcerptText : "", ) ); $l_str_FootnoteReplaceText = $l_obj_Template->getContent(); // reset the template $l_obj_Template->reload(); if ( MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_ENABLED)) && !MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_ALTERNATIVE)) ) { $l_int_OffsetY = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_MOUSE_OVER_BOX_OFFSET_Y)); $l_int_OffsetX = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_MOUSE_OVER_BOX_OFFSET_X)); $l_int_FadeInDelay = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_MOUSE_OVER_BOX_FADE_IN_DELAY )); $l_int_FadeInDuration = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_MOUSE_OVER_BOX_FADE_IN_DURATION )); $l_int_FadeOutDelay = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_MOUSE_OVER_BOX_FADE_OUT_DELAY )); $l_int_FadeOutDuration = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_MOUSE_OVER_BOX_FADE_OUT_DURATION)); // fill in 'templates/public/tooltip.html': $l_obj_TemplateTooltip->replace( array( "post_id" => $l_int_PostId, "id" => $l_int_Index, "position" => MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_MOUSE_OVER_BOX_POSITION), "offset-y" => !empty($l_int_OffsetY) ? $l_int_OffsetY : 0, "offset-x" => !empty($l_int_OffsetX) ? $l_int_OffsetX : 0, "fade-in-delay" => !empty($l_int_FadeInDelay ) ? $l_int_FadeInDelay : 0, "fade-in-duration" => !empty($l_int_FadeInDuration ) ? $l_int_FadeInDuration : 0, "fade-out-delay" => !empty($l_int_FadeOutDelay ) ? $l_int_FadeOutDelay : 0, "fade-out-duration" => !empty($l_int_FadeOutDuration) ? $l_int_FadeOutDuration : 0, ) ); $l_str_FootnoteReplaceText .= $l_obj_TemplateTooltip->getContent(); $l_obj_TemplateTooltip->reload(); } } // replace the footnote with the template $p_str_Content = substr_replace($p_str_Content, $l_str_FootnoteReplaceText, $l_int_PosStart, $l_int_Length + strlen($l_str_EndingTag)); // add footnote only if not empty if (!empty($l_str_FootnoteText)) { // set footnote to the output box at the end self::$a_arr_Footnotes[] = $l_str_FootnoteText; // increase footnote index $l_int_FootnoteIndex++; } // add offset to the new starting position $l_int_PosStart += $l_int_Length + strlen($l_str_EndingTag); $l_int_PosStart = $l_int_Length + strlen($l_str_FootnoteReplaceText); } while (true); // return content return $p_str_Content; } /** * Generates the reference container. * * @author Stefan Herndler * @since 1.5.0 * @return string * * Edited for 2.0.6: fixed line breaking behavior in footnote # clusters * Edited for 2.1.1: fixed fragment IDs and backlinks with combine identical turned on 2020-11-14T1808+0100 */ public function ReferenceContainer() { // no footnotes have been replaced on this page: if (empty(self::$a_arr_Footnotes)) { return ""; } /** * INFINITE SCROLL / AUTOLOAD, ARCHIVE VIEW * * Multiple posts are appended to each other, functions and IDs must be disambiguated. * Contributed by @docteurfitness * @since 2.0.5 * * post ID to make everything unique wrt infinite scroll and archive view: */ global $l_int_PostId; $l_int_PostId = get_the_id(); /** * OPTIONAL LINK ELEMENT FOR FOOTNOTE REFERRERS AND BACKLINKS * * STYLING: * Link color is preferred for referrers and backlinks. * Setting a global link color is a common feature in WordPress themes. * CSS does not support identifiers for link colors (color: link | hover | active | visited) * These are only supported as pseudo-classes of the link element. * Hence the link element must be present for styling purposes. * But styling these elements with the link color is not universally preferred. * If not, the very presence of the link elements may need to be avoided. * * FUNCTIONALITY: * Although widely used for that purpose, hyperlinks are disliked for footnote linking. * Browsers may need to be prevented from logging these clicks in the browsing history, * as logging compromises the usability of the 'return to previous' button in browsers. * For that purpose, and for scroll animation, this linking is performed by JavaScript. * * The link elements have been added and are present @since 2.0.0. * Then the link addresses were removed @since 2.0.4. * Then the presence of elements was made optional * @since 2.1.4 * 2020-11-25T1306+0100 */ $l_str_LinkSpan = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_LINK_ELEMENT_ENABLED)) ? 'a' : 'span'; /** * FOOTNOTE INDEX BACKLINK SYMBOL * * The backlink symbol has been removed for 2.0.0 along with column 2 of the reference container. * On user request, an arrow is prepended @since 2.0.3, and the setting is restored @since 2.0.4. * @since 2.1.1 a select box allows to disable the symbol instead of customizing it to invisible. */ // check if arrow is enabled: if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_BACKLINK_SYMBOL_ENABLE))) { // get html arrow $l_str_Arrow = MCI_Footnotes_Convert::getArrow(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_HYPERLINK_ARROW)); // set html arrow to the first one if invalid index defined if (is_array($l_str_Arrow)) { $l_str_Arrow = MCI_Footnotes_Convert::getArrow(0); } // get user defined arrow $l_str_ArrowUserDefined = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_HYPERLINK_ARROW_USER_DEFINED); if (!empty($l_str_ArrowUserDefined)) { $l_str_Arrow = $l_str_ArrowUserDefined; } // wrap the arrow in a @media print { display:hidden } span: $l_str_FootnoteArrow = ''; $l_str_FootnoteArrow .= $l_str_Arrow . ''; } else { // if it is not, set arrow to empty: $l_str_Arrow = ''; $l_str_FootnoteArrow = ''; } /** * BACKLINK SEPARATOR * * Initially a comma was appended in this algorithm for enumerations. * The comma in enumerations is not generally preferred. * @since 2.1.4 the separator is optional, has options, and is customizable: */ // check if it is even enabled: if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_BACKLINKS_SEPARATOR_ENABLED))) { // if so, check if it is customized: $l_str_Separator = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_BACKLINKS_SEPARATOR_CUSTOM); if (empty($l_str_Separator)) { // if it is not, check which option is on: $l_str_SeparatorOption = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_BACKLINKS_SEPARATOR_OPTION); switch ($l_str_SeparatorOption) { case 'comma' : $l_str_Separator = ','; break; case 'semicolon': $l_str_Separator = ';'; break; case 'en_dash' : $l_str_Separator = ' –'; break; } } } else { $l_str_Separator = ''; } /** * BACKLINK TERMINATOR * * Initially a dot was appended in the table row template. * @since 2.0.6 a dot after footnote numbers is discarded as not localizable; * making it optional was envisaged. * @since 2.1.4 the terminator is optional, has options, and is customizable: */ // check if it is even enabled: if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_BACKLINKS_TERMINATOR_ENABLED))) { // if so, check if it is customized: $l_str_Terminator = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_BACKLINKS_TERMINATOR_CUSTOM); if (empty($l_str_Terminator)) { // if it is not, check which option is on: $l_str_TerminatorOption = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_BACKLINKS_TERMINATOR_OPTION); switch ($l_str_TerminatorOption) { case 'period' : $l_str_Terminator = '.'; break; case 'parenthesis': $l_str_Terminator = ')'; break; case 'colon' : $l_str_Terminator = ':'; break; } } } else { $l_str_Terminator = ''; } /** * LINE BREAKS * * The backlinks of combined footnotes are generally preferred in an enumeration. * But when few footnotes are identical, stacking the items in list form is better. * Variable number length and proportional character width require explicit line breaks. * Otherwise, an ordinary space character offering a line break opportunity is inserted. */ $l_str_LineBreak = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_BACKLINKS_LINE_BREAKS_ENABLED)) ? '
' : ' '; /** * For maintenance and support, table rows in the reference container should be * separated by an empty line. So we add these line breaks for source readability. * Before the first table row (breaks between rows are ~200 lines below): */ $l_str_Body = "\r\n\r\n"; // REFERENCE CONTAINER TABLE ROW TEMPLATE LOAD // when combining identical footnotes is turned on, another template is needed: if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_COMBINE_IDENTICAL_FOOTNOTES))) { // the combining template allows for backlink clusters and supports cell clicking for single notes: $l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "reference-container-body-combi"); } else { // when 3-column layout is turned on (only available if combining is turned off): if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_3COLUMN_LAYOUT_ENABLE))) { $l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "reference-container-body-3column"); } else { // when switch symbol and index is turned on, and combining and 3-columns are off: if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_BACKLINK_SYMBOL_SWITCH))) { $l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "reference-container-body-switch"); } else { // default is the standard template: $l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "reference-container-body"); } } } // SET SWITCH FLAG INDEPENDENTLY if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_BACKLINK_SYMBOL_SWITCH))) { $l_bool_SymbolSwitch = true; } else { $l_bool_SymbolSwitch = false; } // FILL IN THE TEMPLATE // loop through all footnotes found in the page for ($l_int_Index = 0; $l_int_Index < count(self::$a_arr_Footnotes); $l_int_Index++) { // TEXT COLUMN // get footnote text $l_str_FootnoteText = self::$a_arr_Footnotes[$l_int_Index]; // if footnote is empty, get to the next one // With combine identical turned on, identicals will be deleted and are skipped: if (empty($l_str_FootnoteText)) { continue; } // INDEX COLUMN WITH ONE BACKLINK PER TABLE ROW // Standard behavior appropriate for combining identicals turned off // generate content of footnote index cell $l_int_FirstFootnoteIndex = ($l_int_Index + 1); // get the footnote index string and // keep supporting legacy index placeholder: $l_str_FootnoteIndex = MCI_Footnotes_Convert::Index(($l_int_Index + 1), MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_COUNTER_STYLE)); // SUPPORT FOR COMBINING IDENTICALS: COMPOSE ENUMERATED BACKLINKS if ( MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_COMBINE_IDENTICAL_FOOTNOTES))) { $l_str_FootnoteId = $l_str_FootnoteIndex; // in case the footnote is unique: $l_str_FootnoteReference = "<$l_str_LinkSpan"; $l_str_FootnoteReference .= ' id="footnote_plugin_reference_'; $l_str_FootnoteReference .= $l_int_PostId; $l_str_FootnoteReference .= "_$l_str_FootnoteId\""; $l_str_FootnoteReference .= ' class="footnote_backlink"'; // the click event goes in the table cell: $l_str_BacklinkEvent = ' onclick="footnote_moveToAnchor_' . $l_int_PostId; $l_str_BacklinkEvent .= "('footnote_plugin_tooltip_$l_int_PostId"; $l_str_BacklinkEvent .= "_$l_str_FootnoteId');\""; // the dedicated template enumerating backlinks uses another variable: $l_str_FootnoteBacklinks = $l_str_FootnoteReference; $l_str_FootnoteBacklinks .= $l_str_BacklinkEvent; // continue both single note and notes cluster, depending on switch option status: if ($l_bool_SymbolSwitch) { $l_str_FootnoteReference .= ">$l_str_FootnoteId$l_str_FootnoteArrow"; $l_str_FootnoteBacklinks .= ">$l_str_FootnoteId$l_str_FootnoteArrow"; } else { $l_str_FootnoteReference .= ">$l_str_FootnoteArrow$l_str_FootnoteId"; $l_str_FootnoteBacklinks .= ">$l_str_FootnoteArrow$l_str_FootnoteId"; } // If that is the only footnote with this text, we’re nearly done. // check if it isn't the last footnote in the array: if ($l_int_FirstFootnoteIndex < count(self::$a_arr_Footnotes)) { // get all footnotes that haven't passed yet: for ($l_int_CheckIndex = $l_int_FirstFootnoteIndex; $l_int_CheckIndex < count(self::$a_arr_Footnotes); $l_int_CheckIndex++) { // check if a further footnote is the same as the actual one: if ($l_str_FootnoteText == self::$a_arr_Footnotes[$l_int_CheckIndex]) { // if so, set the further footnote as empty so it won't be displayed later: self::$a_arr_Footnotes[$l_int_CheckIndex] = ""; // cancel the event altogether: $l_str_BacklinkEvent = ""; // HERE GOES THE FRAGMENT IDENTIFIER AND THE BACKLINK TOO: // add the footnote index to the actual index: // update the footnote ID: $l_str_FootnoteId = MCI_Footnotes_Convert::Index(($l_int_CheckIndex + 1), MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_COUNTER_STYLE)); // resume composing the backlinks enumeration: $l_str_FootnoteBacklinks .= "$l_str_Separator"; $l_str_FootnoteBacklinks .= "$l_str_LineBreak<$l_str_LinkSpan"; $l_str_FootnoteBacklinks .= ' id="footnote_plugin_reference_'; $l_str_FootnoteBacklinks .= $l_int_PostId; $l_str_FootnoteBacklinks .= "_$l_str_FootnoteId"; $l_str_FootnoteBacklinks .= '" class="footnote_backlink" '; $l_str_FootnoteBacklinks .= 'onclick="footnote_moveToAnchor_' . $l_int_PostId; $l_str_FootnoteBacklinks .= "('footnote_plugin_tooltip_$l_int_PostId"; $l_str_FootnoteBacklinks .= "_$l_str_FootnoteId');\">"; $l_str_FootnoteBacklinks .= $l_bool_SymbolSwitch ? '' : $l_str_FootnoteArrow; $l_str_FootnoteBacklinks .= $l_str_FootnoteId; $l_str_FootnoteBacklinks .= $l_bool_SymbolSwitch ? $l_str_FootnoteArrow : ''; } } } $l_str_FootnoteReference .= "$l_str_Terminator"; $l_str_FootnoteBacklinks .= "$l_str_Terminator"; } // line wrapping of URLs already fixed, see above // replace all placeholders in 'templates/public/reference-container-body.html' // or in 'templates/public/reference-container-body-combi.html' // or in 'templates/public/reference-container-body-3column.html' // or in 'templates/public/reference-container-body-switch.html' $l_obj_Template->replace( array( // placeholder used in all templates: "text" => $l_str_FootnoteText, // used in standard layout W/O COMBINED FOOTNOTES: "post_id" => $l_int_PostId, "id" => MCI_Footnotes_Convert::Index($l_int_FirstFootnoteIndex, MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_COUNTER_STYLE)), "link-start" => $l_str_LinkSpan == 'a' ? '' : '', "link-end" => $l_str_LinkSpan == 'a' ? '' : '', "link-span" => $l_str_LinkSpan, "terminator" => $l_str_Terminator, // used in standard layout WITH COMBINED IDENTICALS TURNED ON: "pointer" => empty($l_str_BacklinkEvent) ? '' : ' pointer', "event" => $l_str_BacklinkEvent, "backlinks" => empty($l_str_BacklinkEvent) ? $l_str_FootnoteBacklinks : $l_str_FootnoteReference, // Legacy placeholders for use in legacy layout templates: "arrow" => $l_str_FootnoteArrow, "index" => $l_str_FootnoteIndex, ) ); $l_str_Body .= $l_obj_Template->getContent(); // extra line breaks for page source readability: $l_str_Body .= "\r\n\r\n"; $l_obj_Template->reload(); } // get scroll offset and duration settings: $l_int_ScrollOffset = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_SCROLL_OFFSET); $l_int_ScrollDuration = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_SCROLL_DURATION); // load 'templates/public/reference-container.html': $l_obj_TemplateContainer = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "reference-container"); $l_obj_TemplateContainer->replace( array( "post_id" => $l_int_PostId, "label" => MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_NAME), "button-style" => !MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_COLLAPSE)) ? 'display: none;' : '', "style" => MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_COLLAPSE)) ? 'display: none;' : '', "content" => $l_str_Body, "scroll-offset" => ($l_int_ScrollOffset / 100), "scroll-duration" => $l_int_ScrollDuration, ) ); // free all found footnotes if reference container will be displayed self::$a_arr_Footnotes = array(); return $l_obj_TemplateContainer->getContent(); } }