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footnotes/class/task.php

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<?php
/**
* Includes the core function of the Plugin - Search and Replace the Footnotes.
*
* @filesource
* @author Stefan Herndler
* @since 1.5.0
*
* @lastmodified 2021-02-27T0225+0100
*
* @since 2.0.0 Bugfix: various.
* @since 2.0.4 Bugfix: Referrers and backlinks: remove hard links to streamline browsing history, thanks to @theroninjedi47 bug report.
* @since 2.0.5 Bugfix: Reference container: fix relative position through priority level, thanks to @june01 @imeson @spaceling bug reports, thanks to @spaceling code contribution.
* @since 2.0.5 Update: Hooks: Default-enable all hooks to prevent footnotes from seeming broken in some parts.
* @since 2.0.6 Bugfix: Infinite scroll: debug autoload by adding post ID, thanks to @docteurfitness code contribution.
* @since 2.0.6 Bugfix: Priority level back to PHP_INT_MAX (ref container positioning not this plugin’s responsibility).
* @since 2.0.6 Bugfix: Reference container: fix line breaking behavior in footnote number clusters.
* @since 2.0.7 BUGFIX: Hooks: Default-disable 'the_post', thanks to @spaceling @markcheret @nyamachi @whichgodsaves @spiralofhope2 @mmallett @andreasra @widecast @ymorin007 @tashi1es bug reports.
* @since 2.0.9 Bugfix: Remove the_post hook 2020-11-08T1839+0100.
* @since 2.1.0 Adding: Tooltips: Read-on button: Label: configurable instead of localizable, thanks to @rovanov example provision.
* @since 2.1.1 Bugfix: Referrers, reference container: Combining identical footnotes: fix dead links and ensure referrer-backlink bijectivity, thanks to @happyches bug report.
* @since 2.1.1 Bugfix: Reference container: fix start pages by making its display optional, thanks to @dragon013 bug report.
* @since 2.1.1 Bugfix: Referrers: new setting for vertical align: superscript (default) or baseline (optional), thanks to @cwbayer bug report.
* @since 2.1.1 Bugfix: Reference container: option to append symbol (prepended by default), thanks to @spaceling code contribution.
* @since 2.1.1 Bugfix: Reference container: Backlink symbol: make optional, not suggest configuring it to invisible, thanks to @spaceling feedback.
* @since 2.1.1 Bugfix: Dashboard: priority level setting for the_content hook, thanks to @imeson bug report.
* @since 2.1.1 Bugfix: Tooltips: optional alternative JS implementation with CSS transitions to fix configuration-related outage, thanks to @andreasra feedback.
* @since 2.1.1 Bugfix: Reference container: option to restore pre-2.0.0 layout with the backlink symbol in an extra column.
* @since 2.1.2 Bugfix: Dashboard: priority level settings for all other hooks, thanks to @nikelaos bug report.
* @since 2.1.3 Bugfix: Reference container: fix width in mobile view by URL wrapping for Unicode-non-conformant browsers, thanks to @karolszakiel bug report.
* @since 2.1.4 Bugfix: Styling: Referrers and backlinks: make link elements optional to fix issues.
* @since 2.1.4 Bugfix: Reference container: Backlink symbol: support for appending when combining identicals is on.
* @since 2.1.4 Bugfix: Reference container: make separating and terminating punctuation optional and configurable, thanks to @docteurfitness issue report and code contribution.
* @since 2.1.4 Bugfix: Reference container: Backlinks: fix stacked enumerations by adding optional line breaks.
* @since 2.1.4 Bugfix: Reference container: fix layout issues by moving backlink column width to settings.
* @since 2.1.4 Bugfix: Styling: Tooltips: fix font size issue by adding font size to settings with legacy as default.
* @since 2.1.4 Bugfix: Scroll offset: make configurable to fix site-dependent issues related to fixed headers.
* @since 2.1.4 Bugfix: Scroll duration: make configurable to conform to website content and style requirements.
* @since 2.1.4 Bugfix: Tooltips: make display delays and fade durations configurable to conform to website style.
* @since 2.1.4 Bugfix: Referrers and backlinks: Styling: make link elements optional to fix issues, thanks to @docteurfitness issue report and code contribution.
* @since 2.1.4 Bugfix: Reference container, tooltips: fix line wrapping of URLs (hyperlinked or not) based on pattern, not link element.
* @since 2.1.4 Bugfix: Reference container: Backlink symbol: support for appending when combining identicals is on.
* @since 2.1.4 Bugfix: Reference container: Backlinks: fix line breaking with respect to separators and terminators.
* @since 2.1.5 Bugfix: Reference container, tooltips: URL wrap: exclude image source too, thanks to @bjrnet21 bug report.
* @since 2.1.6 Bugfix: Reference container, tooltips: URL wrap: fix regex, thanks to @a223123131 bug report.
* @since 2.1.6 Bugfix: Dashboard: URL wrap: add option to properly enable/disable URL wrap.
* @since 2.2.0 Adding: Reference container: support for custom position shortcode, thanks to @hamshe issue report.
* @since 2.2.3 Bugfix: Custom CSS: insert new CSS in the public page header element after existing CSS.
* @since 2.2.5 Bugfix: Reference container: delete position shortcode if unused because position may be widget or footer, thanks to @hamshe bug report.
* @since 2.2.5 Bugfix: Reference container: Label: make bottom border an option, thanks to @markhillyer issue report.
* @since 2.2.5 Bugfix: Reference container: Label: option to select paragraph or heading element, thanks to @markhillyer issue report.
* @since 2.2.5 Update: Tooltips: Alternative tooltips: connect to position/timing settings (for themes not supporting jQuery tooltips).
* @since 2.2.6 Bugfix: Reference container, tooltips: URL wrap: make the quotation mark optional wrt query parameters, thanks to @spiralofhope2 bug report.
* @since 2.2.7 Bugfix: Reference container, tooltips: URL wrap: remove a bug introduced in the regex, thanks to @rjl20 @spaceling @lukashuggenberg @klusik @friedrichnorth @bernardzit bug reports.
* @since 2.2.8 Bugfix: Reference container, tooltips: URL wrap: correctly make the quotation mark optional wrt query parameters, thanks to @spiralofhope2 bug report.
* @since 2.2.9 Bugfix: Reference container, tooltips: URL wrap: account for RFC 2396 allowed characters in parameter names.
* @since 2.2.9 Bugfix: Reference container, widget_text hook: support for multiple containers in a page, thanks to @justbecuz bug report.
* @since 2.2.9 Bugfix: Reference container, tooltips: URL wrap: exclude URLs also where the equals sign is preceded by an entity or character reference.
* @since 2.2.10 Bugfix: Reference container: add option for table borders to restore pre-2.0.0 design, thanks to @noobishh issue report.
* @since 2.2.10 Bugfix: Reference container, tooltips: URL wrap: support also file transfer protocol URLs.
* @since 2.3.0 Bugfix: Reference container: convert top padding to margin and make it a setting, thanks to @hamshe bug report.
* @since 2.3.0 Adding: Referrers and backlinks: optional hard links for AMP compatibility, thanks to @psykonevro bug report, thanks to @martinneumannat code contribution.
* @since 2.3.0 Bugfix: Dashboard: Custom CSS: swap migration Boolean, meaning 'show legacy' instead of 'migration complete', due to storage data structure constraints.
* @since 2.4.0 Adding: Footnote delimiters: syntax validation for balanced footnote start and end tag short codes.
* @since 2.4.0 Bugfix: Scroll offset: initialize to safer one third window height for more robustness, thanks to @lukashuggenberg bug report.
* @since 2.4.0 Bugfix: Reference container: Label: set empty label to U+202F NNBSP for more robustness, thanks to @lukashuggenberg feedback.
* @since 2.4.0 Bugfix: Templates: optimize template load and processing based on settings, thanks to @misfist code contribution.
* @since 2.4.0 Bugfix: Process: initialize hard link address variables to empty string to fix 'undefined variable' bug, thanks to @a223123131 bug report.
* @since 2.5.0 Bugfix: Hooks: support footnotes on category pages, thanks to @vitaefit bug report, thanks to @misfist code contribution.
* @since 2.5.0 Bugfix: Footnote delimiters: Syntax validation: exclude certain cases involving scripts, thanks to @andreasra bug report.
* @since 2.5.0 Bugfix: Footnote delimiters: Syntax validation: complete message with hint about setting, thanks to @andreasra bug report.
* @since 2.5.0 Bugfix: Footnote delimiters: Syntax validation: limit length of quoted string to 300 characters, thanks to @andreasra bug report.
* @since 2.5.1 Bugfix: Hooks: support footnotes in Popup Maker popups, thanks to @squatcher bug report.
* @since 2.5.2 Update: Tooltips: ability to display dedicated content before `[[/tooltip]]`, thanks to @jbj2199 issue report.
* @since 2.5.3 Bugfix: Reference container, tooltips: URL wrap: exclude URL pattern as folder name in Wayback Machine URL, thanks to @rumperuu bug report.
* @since 2.5.4 Bugfix: Referrers: optional fixes to vertical alignment, font size and position (static) for in-theme consistency and cross-theme stability, thanks to @tomturowski bug report.
* @since 2.5.4 Bugfix: Reference container, tooltips: URL wrap: account for leading space in value, thanks to @karolszakiel example provision.
* @since 2.5.4 Update: Reference container: Hard backlinks (optional): optional configurable tooltip hinting to use the backbutton instead, thanks to @theroninjedi47 bug report.
* @since 2.5.4 Bugfix: Tooltips: fix display in Popup Maker popups by correcting a coding error.
* @since 2.5.5 Bugfix: Process: fix numbering bug impacting footnote #2 with footnote #1 close to start, thanks to @rumperuu bug report, thanks to @lolzim code contribution.
* @since 2.5.6 Bugfix: Reference container: optional alternative expanding and collapsing without jQuery for use with hard links, thanks to @hopper87it @pkverma99 issue reports.
* @since 2.5.7 Bugfix: Process: fix footnote duplication by emptying the footnotes list every time the search algorithm is run on the content, thanks to @inoruhana bug report.
*/
// If called directly, abort:
defined( 'ABSPATH' ) or die;
/**
* Searches and replaces the footnotes.
* Generates the reference container.
*
* @author Stefan Herndler
* @since 1.5.0
*/
class MCI_Footnotes_Task {
/**
* PROPERTIES
*/
/**
* 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 = "";
/**
* Infinite scroll / autoload or archive view
*
* - Bugfix: Infinite scroll: debug autoload by adding post ID, thanks to @docteurfitness code contribution
*
* @since 2.0.6
* @var int
*
* @contributor @docteurfitness
* @link https://wordpress.org/support/topic/auto-load-post-compatibility-update/#post-13618833
*
* @reporter @docteurfitness
* @link https://wordpress.org/support/topic/auto-load-post-compatibility-update/
*
* As multiple posts are appended to each other, functions and fragment IDs must be disambiguated.
* post ID to make everything unique wrt infinite scroll and archive view:
*/
public static $a_int_PostId = 0;
/**
* Multiple reference containers in content and widgets
*
* - Bugfix: Reference container, widget_text hook: support for multiple containers in a page, thanks to @justbecuz bug report.
*
* @since 2.2.9
* @date 2020-12-25T0338+0100
*
* @reporter @justbecuz
* @link https://wordpress.org/support/topic/reset-footnotes-to-1/
* @link https://wordpress.org/support/topic/reset-footnotes-to-1/#post-13662830
*
* @var int 1; incremented every time after a reference container is inserted
*
* This ID disambiguates multiple reference containers in a page
* as they may occur when the widget_text hook is active and the page
* is built with Elementor and has an accordion or similar toggle sections.
*/
public static $a_int_ReferenceContainerId = 1;
/**
* Template process optimization
*
* - Bugfix: Templates: optimize template load and processing based on settings, thanks to @misfist code contribution.
*
* @since 2.4.0
* @date 2021-01-04T1355+0100
*
* @author Patrizia Lutz @misfist
*
* @link https://wordpress.org/support/topic/template-override-filter/#post-13864301
* @link https://github.com/misfist/footnotes/releases/tag/2.4.0d3 repository
* @link https://github.com/misfist/footnotes/compare/2.4.0%E2%80%A62.4.0d3 diff
*
* @var bool
*
* Streamline process depending on tooltip enabled status.
* Load tooltip inline script only if jQuery tooltips are enabled.
* Actual value depends on settings.
*/
public static $a_bool_TooltipsEnabled = false;
public static $a_bool_AlternativeTooltipsEnabled = false;
/**
* Hard links for AMP compatibility
*
* @since 2.0.0 Bugfix: footnote links script independent.
*
*
* - Bugfix: Referrers and backlinks: remove hard links to streamline browsing history, thanks to @theroninjedi47 bug report.
*
* @since 2.0.4
*
* @reporter @theroninjedi47
* @link https://wordpress.org/support/topic/hyperlinked-footnotes-creating-excessive-back-history/
*
*
* - Adding: Referrers and backlinks: optional hard links for AMP compatibility, thanks to @psykonevro bug report, thanks to @martinneumannat code contribution.
*
* @since 2.3.0
* @var bool|str|int
*
* @contributor @martinneumannat
* @link https://wordpress.org/support/topic/making-it-amp-compatible/
*
* @reporter @psykonevro
* @link https://wordpress.org/support/topic/footnotes-is-not-amp-compatible/
*
* The official AMP plugin strips off JavaScript, breaking Footnotes’
* animated scrolling.
* When the alternative reference container is enabled, hard links are too.
*/
public static $a_bool_HardLinksEnable = false;
public static $a_str_ReferrerLinkSlug = 'r';
public static $a_str_FootnoteLinkSlug = 'f';
public static $a_str_LinkIdsSeparator = '+';
public static $a_str_PostContainerIdCompound = '';
/**
* Scroll offset
*
* - Bugfix: Scroll offset: make configurable to fix site-dependent issues related to fixed headers.
*
* @since 2.1.4
* @date 2020-12-05T0538+0100
*
*
* - Bugfix: Scroll offset: initialize to safer one third window height for more robustness, thanks to @lukashuggenberg bug report.
*
* @since 2.4.0
* @date 2021-01-03T2055+0100
* @date 2021-01-04T0504+0100
*
* @reporter @lukashuggenberg
* @link https://wordpress.org/support/topic/2-2-6-breaks-all-footnotes/#post-13857922
*
* @var int
*
* Websites may use high fixed headers not contracting at scroll.
* Scroll offset may now need to get into inline CSS.
* Hence it needs to be loaded twice, because priority levels may not match.
*/
public static $a_int_ScrollOffset = 34;
/**
* Optional link element for footnote referrers and backlinks
*
* @since 2.0.0 add link elements along with hard links.
*
*
* - Bugfix: Referrers and backlinks: Styling: make link elements optional to fix issues, thanks to @docteurfitness issue report and code contribution.
*
* @since 2.1.4
* @date 2020-11-25T1306+0100
* @date 2020-11-26T1051+0100
*
* @contributor @docteurfitness
* @link https://wordpress.org/support/topic/update-2-1-3/#post-13704194
*
* @reporter @docteurfitness
* @link https://wordpress.org/support/topic/update-2-1-3/
*
*
* - Adding: Referrers and backlinks: optional hard links for AMP compatibility, thanks to @psykonevro bug report, thanks to @martinneumannat code contribution.
*
* @since 2.3.0
* @date 2020-12-30T2313+0100
*
* @contributor @martinneumannat
* @link https://wordpress.org/support/topic/making-it-amp-compatible/
*
* @reporter @psykonevro
* @link https://wordpress.org/support/topic/footnotes-is-not-amp-compatible/
*
* Although widely used for that purpose, hyperlinks are disliked for footnote linking.
* Browsers may need to be prevented from logging these clicks in the browsing history,
* as logging compromises the usability of the 'return to previous' button in browsers.
* For that purpose, and for scroll animation, this linking is performed by JavaScript.
*
* Link elements raise concerns, so that mitigating their proliferation may be desired.
*
* By contrast, due to an insufficiency in the CSS standard, coloring elements with the
* theme’s link color requires real link elements and cannot be done with named colors,
* as CSS does not support 'color: link|hover|active|visited', after the pseudo-classes
* of the link element.
*
* Yet styling these elements with the link color is not universally preferred, so that
* the very presence of these link elements may need to be avoided.
*
* @see self::$a_bool_HardLinksEnable
*/
public static $a_str_LinkSpan = 'span';
public static $a_str_LinkOpenTag = '';
public static $a_str_LinkCloseTag = '';
/**
* Dedicated tooltip text
*
* - Update: Tooltips: ability to display dedicated content before `[[/tooltip]]`, thanks to @jbj2199 issue report.
*
* @since 2.5.2
* @date 2021-01-19T2223+0100
*
* @reporter @jbj2199
* @link https://wordpress.org/support/topic/change-tooltip-text/
*
* Tooltips can display another content than the footnote entry
* in the reference container. The trigger is a shortcode in
* the footnote text separating the tooltip text from the note.
* That is consistent with what WordPress does for excerpts.
*/
public static $a_bool_MirrorTooltipText = false;
public static $a_str_TooltipShortcode = '[[/tooltip]]';
public static $a_int_TooltipShortcodeLength = 12;
/**
* Footnote delimiter syntax validation
*
* - Adding: Footnote delimiters: syntax validation for balanced footnote start and end tag short codes.
*
* @since 2.4.0
* @date 2021-01-01T0227+0100
*
* @var bool
*
* The algorithm first checks for balanced footnote opening and closing tag short codes.
* The first encountered error triggers the display of a warning below the post title.
*
* Unbalanced short codes have caused significant trouble because they are hard to detect.
* Any compiler or other tool reports syntax errors in the first place. Footnotes’ exception
* is considered a design flaw, and the feature is released as a bug fix after overdue 2.3.0
* released in urgency to provide AMP compat before 2021.
*/
public static $a_bool_SyntaxErrorFlag = true;
/**
* METHODS
*/
/**
* Register WordPress Hooks to replace Footnotes in the content of a public page.
*
* @author Stefan Herndler
* @since 1.5.0
*
* @since 1.5.4 Adding: Hooks: support 'the_post' in response to user request for custom post types.
* @since 2.0.5 Bugfix: Reference container: fix relative position through priority level, thanks to @june01 @imeson @spaceling bug reports, thanks to @spaceling code contribution.
* @since 2.0.5 Update: Hooks: Default-enable all hooks to prevent footnotes from seeming broken in some parts.
* @since 2.0.6 Bugfix: Priority level back to PHP_INT_MAX (ref container positioning not this plugin’s responsibility).
* @since 2.0.7 BUGFIX: Hooks: Default-disable 'the_post', thanks to @spaceling @markcheret @nyamachi @whichgodsaves @spiralofhope2 @mmallett @andreasra @widecast @ymorin007 @tashi1es bug reports.
* @since 2.0.7 Bugfix: Set priority level back to 10 assuming it is unproblematic 2020-11-06T1344+0100.
* @since 2.0.8 Bugfix: Priority level back to PHP_INT_MAX (need to get in touch with other plugins).
* @since 2.1.0 UPDATE: Hooks: remove 'the_post', the plugin stops supporting this hook.
* @since 2.1.1 Bugfix: Dashboard: priority level setting for the_content hook, thanks to @imeson bug report.
* @since 2.1.2 Bugfix: Dashboard: priority level settings for all other hooks, thanks to @nikelaos bug report.
* @since 2.5.0 Bugfix: Hooks: support footnotes on category pages, thanks to @vitaefit bug report, thanks to @misfist code contribution.
* @since 2.5.1 Bugfix: Hooks: support footnotes in Popup Maker popups, thanks to @squatcher bug report.
*/
public function registerHooks() {
/**
* Priority levels
*
* - Bugfix: Reference container: fix relative position through priority level, thanks to @june01 @imeson @spaceling bug reports, thanks to @spaceling code contribution.
*
* @since 2.0.5
* @date 2020-11-02T0330+0100
* @link https://codex.wordpress.org/Plugin_API/#Hook_in_your_Filter
*
* @contributor @spaceling
* @link https://wordpress.org/support/topic/change-the-position-5/#post-13608594
*
* @reporter @june01
* @link https://wordpress.org/support/topic/change-the-position-5/
*
* @reporter @imeson
* @link https://wordpress.org/support/topic/change-the-position-5/#post-13538345
*
*
* - Bugfix: Dashboard: priority level setting for the_content hook, thanks to @imeson bug report.
*
* @since 2.1.1
* @date 2020-11-17T0254+0100
*
* @reporter @imeson
* @link https://wordpress.org/support/topic/change-the-position-5/#post-13538345
*
*
* - Bugfix: Dashboard: priority level settings for all other hooks, thanks to @nikelaos bug report.
*
* @since 2.1.2
* @date 2020-11-19T1849+0100
*
* @reporter @nikelaos
* @link https://wordpress.org/support/topic/doesnt-work-any-more-11/#post-13676705
*
*
* 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 (i.e. 0 =< $l_int_TheContentPriority =< 1200).
*
* 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.
* @link https://github.com/Modernizr/Modernizr/issues/171
*/
// get values from settings:
$l_int_TheTitlePriority = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_EXPERT_LOOKUP_THE_TITLE_PRIORITY_LEVEL));
$l_int_TheContentPriority = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_EXPERT_LOOKUP_THE_CONTENT_PRIORITY_LEVEL));
$l_int_TheExcerptPriority = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_EXPERT_LOOKUP_THE_EXCERPT_PRIORITY_LEVEL));
$l_int_WidgetTitlePriority = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_EXPERT_LOOKUP_WIDGET_TITLE_PRIORITY_LEVEL));
$l_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:
$l_int_TheTitlePriority = ($l_int_TheTitlePriority == -1) ? PHP_INT_MAX : $l_int_TheTitlePriority ;
$l_int_TheContentPriority = ($l_int_TheContentPriority == -1) ? PHP_INT_MAX : $l_int_TheContentPriority ;
$l_int_TheExcerptPriority = ($l_int_TheExcerptPriority == -1) ? PHP_INT_MAX : $l_int_TheExcerptPriority ;
$l_int_WidgetTitlePriority = ($l_int_WidgetTitlePriority == -1) ? PHP_INT_MAX : $l_int_WidgetTitlePriority;
$l_int_WidgetTextPriority = ($l_int_WidgetTextPriority == -1) ? PHP_INT_MAX : $l_int_WidgetTextPriority ;
// append custom css to the header
add_filter('wp_head', array($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"), $l_int_TheTitlePriority);
}
// configurable priority level for reference container relative positioning; default 98:
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_EXPERT_LOOKUP_THE_CONTENT))) {
add_filter('the_content', array($this, "the_content"), $l_int_TheContentPriority);
/**
* Hook for category pages
*
* - Bugfix: Hooks: support footnotes on category pages, thanks to @vitaefit bug report, thanks to @misfist code contribution.
*
* @since 2.5.0
* @date 2021-01-05T1402+0100
*
* @contributor @misfist
* @link https://wordpress.org/support/topic/footnote-doesntwork-on-category-page/#post-13864859
*
* @reporter @vitaefit
* @link https://wordpress.org/support/topic/footnote-doesntwork-on-category-page/
*
* Category pages can have rich HTML content in a term description with article status.
* For this to happen, WordPress’ built-in partial HTML blocker needs to be disabled.
* @link https://docs.woocommerce.com/document/allow-html-in-term-category-tag-descriptions/
*/
add_filter('term_description', array($this, "the_content"), $l_int_TheContentPriority);
/**
* Hook for popup maker popups
*
* - Bugfix: Hooks: support footnotes in Popup Maker popups, thanks to @squatcher bug report.
*
* @since 2.5.1
* @date 2021-01-18T2038+0100
*
* @reporter @squatcher
* @link https://wordpress.org/support/topic/footnotes-use-in-popup-maker/
*/
add_filter('pum_popup_content', array($this, "the_content"), $l_int_TheContentPriority);
}
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_EXPERT_LOOKUP_THE_EXCERPT))) {
add_filter('the_excerpt', array($this, "the_excerpt"), $l_int_TheExcerptPriority);
}
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_EXPERT_LOOKUP_WIDGET_TITLE))) {
add_filter('widget_title', array($this, "widget_title"), $l_int_WidgetTitlePriority);
}
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_EXPERT_LOOKUP_WIDGET_TEXT))) {
add_filter('widget_text', array($this, "widget_text"), $l_int_WidgetTextPriority);
}
/**
* The the_post hook
*
* - Adding: Hooks: support 'the_post' in response to user request for custom post types.
*
* @since 1.5.4
* @accountable @aricura
* @link https://wordpress.org/support/topic/doesnt-work-in-custon-post-types/#post-5339110
*
*
* - Update: Hooks: Default-enable all hooks to prevent footnotes from seeming broken in some parts.
*
* @since 2.0.5
* @accountable @pewgeuges
*
*
* - BUGFIX: Hooks: Default-disable 'the_post', thanks to @spaceling @markcheret @nyamachi @whichgodsaves @spiralofhope2 @mmallett @andreasra @widecast @ymorin007 @tashi1es bug reports.
*
* @since 2.0.7
* @accountable @pewgeuges
* @link https://wordpress.org/support/topic/change-the-position-5/page/2/#post-13630114
* @link https://wordpress.org/support/topic/footnotes-appearing-in-header/#post-13630303
* @link https://wordpress.org/support/topic/footnotes-appearing-in-header/page/2/#post-13630799
* @link https://wordpress.org/support/topic/no-footnotes-anymore/#post-13813233
*
* @reporter @spaceling
* @link https://wordpress.org/support/topic/change-the-position-5/#post-13612697
*
* @reporter @markcheret on behalf of W. Beinert
* @link https://wordpress.org/support/topic/footnotes-now-appear-in-summaries-even-though-this-is-marked-no/
*
* @reporter @nyamachi
* @link https://wordpress.org/support/topic/footnotes-appearing-in-header/
*
* @reporter @whichgodsaves
* @link https://wordpress.org/support/topic/footnotes-appearing-in-header/#post-13622694
*
* @reporter @spiralofhope2
* @link https://wordpress.org/support/topic/2-0-5-broken/
*
* @reporter @mmallett
* @link https://wordpress.org/support/topic/2-0-5-broken/#post-13623208
*
* @reporter @andreasra
* @link https://wordpress.org/support/topic/footnotes-appearing-in-header/#post-13624091
*
* @reporter @widecast
* @link https://wordpress.org/support/topic/2-0-5-broken/#post-13626222
*
* @reporter @ymorin007
* @link https://wordpress.org/support/topic/footnotes-appearing-in-header/#post-13627050
*
* @reporter @markcheret on behalf of L. Smith
* @link https://wordpress.org/support/topic/footnotes-appear-in-random-places-on-academic-website/
*
* @reporter @tashi1es
* @link https://wordpress.org/support/topic/footnotes-appear-in-random-places-on-academic-website/#post-13630495
*
*
* - UPDATE: Hooks: remove 'the_post', the plugin stops supporting this hook.
*
* @since 2.1.0
* @date 2020-11-08T1839+0100
* @accountable @pewgeuges
*/
// 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
*
*
* @since 2.1.1 Bugfix: Reference container: fix start pages by making its display optional, thanks to @dragon013 bug report.
* @since 2.1.1 Bugfix: Tooltips: optional alternative JS implementation with CSS transitions to fix configuration-related outage, thanks to @andreasra feedback.
* @since 2.1.3 raise settings priority to override theme stylesheets
* @since 2.1.4 Bugfix: Tooltips: Styling: fix font size issue by adding font size to settings with legacy as default.
* @since 2.1.4 Bugfix: Reference container: fix layout issues by moving backlink column width to settings.
* @since 2.2.5 Bugfix: Reference container: Label: make bottom border an option, thanks to @markhillyer issue report.
* @since 2.2.5 Bugfix: Reference container: Label: option to select paragraph or heading element, thanks to @markhillyer issue report.
* @since 2.3.0 Bugfix: Reference container: convert top padding to margin and make it a setting, thanks to @hamshe bug report.
* @since 2.5.4 Bugfix: Referrers: optional fixes to vertical alignment, font size and position (static) for in-theme consistency and cross-theme stability, thanks to @tomturowski bug report.
*/
public function wp_head() {
// insert start tag without switching out of PHP:
echo "\r\n<style type=\"text/css\" media=\"all\">\r\n";
/**
* Normalizes the referrers’ vertical alignment and font size.
*
* - Bugfix: Referrers: optional fixes to vertical alignment, font size and position (static) for in-theme consistency and cross-theme stability, thanks to @tomturowski bug report.
*
* @since 2.5.4
* @date 2021-02-12T1631+0100
*
* @reporter @tomturowski
* @link https://wordpress.org/support/topic/in-line-superscript-ref-rides-to-high/
*
* Cannot be included in external stylesheet, as it is only optional.
* The scope is variable too: referrers only, or all superscript elements.
*/
$l_str_NormalizeSuperscript = MCI_Footnotes_Settings::instance()->get( MCI_Footnotes_Settings::C_STR_FOOTNOTE_REFERRERS_NORMAL_SUPERSCRIPT );
if ( $l_str_NormalizeSuperscript !== 'no' ) {
if ( $l_str_NormalizeSuperscript === 'all' ) {
echo "sup {";
} else {
echo ".footnote_plugin_tooltip_text {";
}
echo "vertical-align: super; font-size: smaller; position: static;}\r\n";
}
/**
* Reference container display on home page
*
* - Bugfix: Reference container: fix start pages by making its display optional, thanks to @dragon013 bug report.
*
* @since 2.1.1
*
* @reporter @dragon013
* @link https://wordpress.org/support/topic/possible-to-hide-it-from-start-page/
*/
if (!MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_START_PAGE_ENABLE))) {
echo ".home .footnotes_reference_container { display: none; }\r\n";
}
/**
* Reference container top and bottom margins
*
* - Bugfix: Reference container: convert top padding to margin and make it a setting, thanks to @hamshe bug report.
*
* @since 2.3.0
*
* @reporter @hamshe
* @link https://wordpress.org/support/topic/reference-container-in-elementor/#post-13786635
*/
$l_int_ReferenceContainerTopMargin = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_REFERENCE_CONTAINER_TOP_MARGIN));
$l_int_ReferenceContainerBottomMargin = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_REFERENCE_CONTAINER_BOTTOM_MARGIN));
echo ".footnotes_reference_container {margin-top: ";
echo empty($l_int_ReferenceContainerTopMargin) ? '0' : $l_int_ReferenceContainerTopMargin;
echo "px !important; margin-bottom: ";
echo empty($l_int_ReferenceContainerBottomMargin) ? '0' : $l_int_ReferenceContainerBottomMargin;
echo "px !important;}\r\n";
/**
* Reference container label bottom border
*
* - Bugfix: Reference container: Label: make bottom border an option, thanks to @markhillyer issue report.
* - Bugfix: Reference container: Label: option to select paragraph or heading element, thanks to @markhillyer issue report.
*
* @since 2.2.5
* @date 2020-12-18T1447+0100
*
* @reporter @markhillyer
* @link https://wordpress.org/support/topic/how-do-i-eliminate-the-horizontal-line-beneath-the-reference-container-heading/
*
*/
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_LABEL_BOTTOM_BORDER))) {
echo ".footnote_container_prepare > ";
echo MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_LABEL_ELEMENT);
echo " {border-bottom: 1px solid #aaaaaa !important;}\r\n";
}
/**
* Reference container table row borders
*
* - Bugfix: Reference container: add option for table borders to restore pre-2.0.0 design, thanks to @noobishh issue report.
*
* @since 2.2.10
* @date 2020-12-25T2304+0100
*
* @reporter @noobishh
* @link https://wordpress.org/support/topic/borders-25/
*/
if ( MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_ROW_BORDERS_ENABLE))) {
echo ".footnotes_table, .footnotes_plugin_reference_row {";
echo "border: 1px solid #060606;";
echo " !important;}\r\n";
// adapt left padding to the presence of a border:
echo ".footnote_plugin_index, .footnote_plugin_index_combi {";
echo "padding-left: 6px !important}\r\n";
}
// ref container first column width and max-width:
$l_bool_ColumnWidthEnabled = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_BACKLINKS_COLUMN_WIDTH_ENABLED));
$l_bool_ColumnMaxWidthEnabled = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_BACKLINKS_COLUMN_MAX_WIDTH_ENABLED));
if ( $l_bool_ColumnWidthEnabled || $l_bool_ColumnMaxWidthEnabled ) {
echo ".footnote-reference-container { table-layout: fixed; }";
echo ".footnote_plugin_index, .footnote_plugin_index_combi {";
if ( $l_bool_ColumnWidthEnabled ) {
$l_int_ColumnWidthScalar = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_BACKLINKS_COLUMN_WIDTH_SCALAR);
$l_str_ColumnWidthUnit = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_BACKLINKS_COLUMN_WIDTH_UNIT);
if (!empty($l_int_ColumnWidthScalar)) {
if ($l_str_ColumnWidthUnit == '%') {
if ($l_int_ColumnWidthScalar > 100) {
$l_int_ColumnWidthScalar = 100;
}
}
} else {
$l_int_ColumnWidthScalar = 0;
}
echo " width: $l_int_ColumnWidthScalar$l_str_ColumnWidthUnit !important;";
}
if ( $l_bool_ColumnMaxWidthEnabled ) {
$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_ColumnMaxWidthScalar)) {
if ($l_str_ColumnMaxWidthUnit == '%') {
if ($l_int_ColumnMaxWidthScalar > 100) {
$l_int_ColumnMaxWidthScalar = 100;
}
}
} else {
$l_int_ColumnMaxWidthScalar = 0;
}
echo " max-width: $l_int_ColumnMaxWidthScalar$l_str_ColumnMaxWidthUnit !important;";
}
echo "}\r\n";
}
/**
* Hard links scroll offset
*
* - Bugfix: Scroll offset: make configurable to fix site-dependent issues related to fixed headers.
*
* @since 2.1.4
*
* @since 2.5.6 hard links are always enabled when the alternative reference container is.
*/
self::$a_bool_HardLinksEnable = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_HARD_LINKS_ENABLE));
// correct hard links enabled status depending on alternative reference container enabled status:
$l_str_ScriptMode = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_REFERENCE_CONTAINER_SCRIPT_MODE);
if ( $l_str_ScriptMode != 'jquery' ) {
self::$a_bool_HardLinksEnable = true;
}
self::$a_int_ScrollOffset = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_SCROLL_OFFSET));
if (self::$a_bool_HardLinksEnable) {
echo ".footnote_referrer_anchor, .footnote_item_anchor {bottom: ";
echo self::$a_int_ScrollOffset;
echo "vh;}\r\n";
}
// tooltips:
self::$a_bool_TooltipsEnabled = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_ENABLED));
self::$a_bool_AlternativeTooltipsEnabled = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_ALTERNATIVE));
if (self::$a_bool_TooltipsEnabled) {
echo '.footnote_tooltip {';
// tooltip appearance:
/**
* Tooltip font size
*
* - Bugfix: Styling: Tooltips: fix font size issue by adding font size to settings with legacy as default.
*
* @since 2.1.4
* @date 2020-12-03T0954+0100
*/
echo ' font-size: ';
if(MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_MOUSE_OVER_BOX_FONT_SIZE_ENABLED))) {
echo MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_FLO_MOUSE_OVER_BOX_FONT_SIZE_SCALAR);
echo MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_MOUSE_OVER_BOX_FONT_SIZE_UNIT);
} else {
echo 'inherit';
}
echo ' !important;';
// text color:
$l_str_Color = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_MOUSE_OVER_BOX_COLOR);
if (!empty($l_str_Color)) {
printf(" color: %s !important;", $l_str_Color);
}
// background color:
$l_str_Background = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_MOUSE_OVER_BOX_BACKGROUND);
if (!empty($l_str_Background)) {
printf(" background-color: %s !important;", $l_str_Background);
}
// border width:
$l_int_BorderWidth = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_MOUSE_OVER_BOX_BORDER_WIDTH);
if (!empty($l_int_BorderWidth) && intval($l_int_BorderWidth) > 0) {
printf(" border-width: %dpx !important; border-style: solid !important;", $l_int_BorderWidth);
}
// border color:
$l_str_BorderColor = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_MOUSE_OVER_BOX_BORDER_COLOR);
if (!empty($l_str_BorderColor)) {
printf(" border-color: %s !important;", $l_str_BorderColor);
}
// corner radius:
$l_int_BorderRadius = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_MOUSE_OVER_BOX_BORDER_RADIUS);
if (!empty($l_int_BorderRadius) && intval($l_int_BorderRadius) > 0) {
printf(" border-radius: %dpx !important;", $l_int_BorderRadius);
}
// shadow color:
$l_str_BoxShadowColor = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_MOUSE_OVER_BOX_SHADOW_COLOR);
if (!empty($l_str_BoxShadowColor)) {
printf(" -webkit-box-shadow: 2px 2px 11px %s;", $l_str_BoxShadowColor);
printf(" -moz-box-shadow: 2px 2px 11px %s;", $l_str_BoxShadowColor);
printf(" box-shadow: 2px 2px 11px %s;", $l_str_BoxShadowColor);
}
/**
* Tooltip position and timing
*
* - Bugfix: Tooltips: make display delays and fade durations configurable to conform to website style.
*
* @since 2.1.4
* @date 2020-12-06T1320+0100
*
*
* - Update: Tooltips: Alternative tooltips: connect to position/timing settings (for themes not supporting jQuery tooltips).
*
* @since 2.2.5
* @date 2020-12-18T1113+0100
*/
// jQuery tooltips:
if ( ! self::$a_bool_AlternativeTooltipsEnabled) {
// tooltip position:
$l_int_MaxWidth = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_MOUSE_OVER_BOX_MAX_WIDTH);
if (!empty($l_int_MaxWidth) && intval($l_int_MaxWidth) > 0) {
printf(" max-width: %dpx !important;", $l_int_MaxWidth);
}
echo "}\r\n";
// alternative tooltips:
} else {
echo "}\r\n";
// dimensions:
$l_int_AlternativeTooltipWidth = intval( MCI_Footnotes_Settings::instance()->get( MCI_Footnotes_Settings::C_INT_FOOTNOTES_ALTERNATIVE_MOUSE_OVER_BOX_WIDTH ) );
echo ".footnote_tooltip.position {";
echo " width: " . $l_int_AlternativeTooltipWidth . 'px;';
// set also as max-width wrt short tooltip shrinking:
echo " max-width: " . $l_int_AlternativeTooltipWidth . 'px;';
// position:
$l_str_AlternativePosition = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_ALTERNATIVE_MOUSE_OVER_BOX_POSITION);
$l_int_OffsetX = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_ALTERNATIVE_MOUSE_OVER_BOX_OFFSET_X));
if ($l_str_AlternativePosition == 'top left' || $l_str_AlternativePosition == 'bottom left') {
echo ' right: ' . ( !empty($l_int_OffsetX) ? $l_int_OffsetX : 0) . 'px;';
} else {
echo ' left: ' . ( !empty($l_int_OffsetX) ? $l_int_OffsetX : 0) . 'px;';
}
$l_int_OffsetY = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_ALTERNATIVE_MOUSE_OVER_BOX_OFFSET_Y));
if ($l_str_AlternativePosition == 'top left' || $l_str_AlternativePosition == 'top right') {
echo ' bottom: ' . ( !empty($l_int_OffsetY) ? $l_int_OffsetY : 0) . 'px;';
} else {
echo ' top: ' . ( !empty($l_int_OffsetY) ? $l_int_OffsetY : 0) . 'px;';
}
echo "}\r\n";
// timing:
// jQuery tooltip timing is in templates/public/tooltip.html, filled in after line 690 below.
echo ' .footnote_tooltip.shown {';
$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 ));
$l_int_FadeInDelay = !empty($l_int_FadeInDelay ) ? $l_int_FadeInDelay : '0';
$l_int_FadeInDuration = !empty($l_int_FadeInDuration ) ? $l_int_FadeInDuration : '0';
echo " transition-delay: $l_int_FadeInDelay" . 'ms;';
echo " transition-duration: $l_int_FadeInDuration" . 'ms;';
echo '} .footnote_tooltip.hidden {';
$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));
$l_int_FadeOutDelay = !empty($l_int_FadeOutDelay ) ? $l_int_FadeOutDelay : '0';
$l_int_FadeOutDuration = !empty($l_int_FadeOutDuration ) ? $l_int_FadeOutDuration : '0';
echo " transition-delay: $l_int_FadeOutDelay" . 'ms;';
echo " transition-duration: $l_int_FadeOutDuration" . 'ms;';
echo "}\r\n";
}
}
/**
* Custom CSS
*
* - Bugfix: Custom CSS: insert new CSS in the public page header element after existing CSS.
*
* @since 2.2.3
* @date 2020-12-15T1128+0100
*
* Set custom CSS to override settings, not conversely.
* Legacy Custom CSS is used until it’s set to disappear after dashboard tab migration.
*/
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_CUSTOM_CSS_LEGACY_ENABLE))) {
echo MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_CUSTOM_CSS);
echo "\r\n";
}
echo MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_CUSTOM_CSS_NEW);
// insert end tag without switching out of PHP:
echo "\r\n</style>\r\n";
/**
* Alternative tooltip implementation relying on plain JS and CSS transitions.
*
* - Bugfix: Tooltips: optional alternative JS implementation with CSS transitions to fix configuration-related outage, thanks to @andreasra feedback.
*
* @since 2.1.1
*
* @reporter @andreasra
* @link https://wordpress.org/support/topic/footnotes-appearing-in-header/page/2/#post-13632566
*
* The script for alternative tooltips is printed formatted, not minified:
*/
if ( self::$a_bool_AlternativeTooltipsEnabled ) {
?>
<script content="text/javascript">
function footnoteTooltipShow(footnoteTooltipId) {
document.getElementById(footnoteTooltipId).classList.remove('hidden');
document.getElementById(footnoteTooltipId).classList.add('shown');
}
function footnoteTooltipHide(footnoteTooltipId) {
document.getElementById(footnoteTooltipId).classList.remove('shown');
document.getElementById(footnoteTooltipId).classList.add('hidden');
}
</script>
<?php
};
}
/**
* Displays the 'LOVE FOOTNOTES' slug if enabled.
*
* @author Stefan Herndler
* @since 1.5.0
*
*
* @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
$l_str_LinkedName = sprintf('<a href="https://wordpress.org/plugins/footnotes/" target="_blank" style="text-decoration:none;">%s</a>', MCI_Footnotes_Config::C_STR_PLUGIN_PUBLIC_NAME);
// get random love me text
if (strtolower($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('<div style="text-align:center; color:#acacac;">%s</div>', $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) {
/**
* Empties the footnotes list every time Footnotes is run when the_content hook is called.
*
* - Bugfix: Process: fix footnote duplication by emptying the footnotes list every time the search algorithm is run on the content, thanks to @inoruhana bug report.
*
* @since 2.5.7
*
* @reporter @inoruhana
* @link https://wordpress.org/support/topic/footnote-duplicated-in-the-widget/
*
* Under certain circumstances, footnotes were duplicated, because the footnotes list was
* not emptied every time before the search algorithm was run. That happened eg when both
* the reference container resides in the widget area, and the YOAST SEO plugin is active
* and calls the hook the_content to generate the Open Graph description, while Footnotes
* is set to avoid missing out on the footnotes (in the content) by hooking in as soon as
* the_content is called, whereas at post end Footnotes seems to hook in the_content only
* the time it’s the blog engine processing the post for display and appending the refs.
*/
self::$a_arr_Footnotes = array();
// 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 $p_bool_HideFootnotesText Hide footnotes found in the string.
* @return string
*
*
* @since 2.2.0 Adding: Reference container: support for custom position shortcode, thanks to @hamshe issue report.
* @since 2.2.5 Bugfix: Reference container: delete position shortcode if unused because position may be widget or footer, thanks to @hamshe bug report.
*/
public function exec($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);
/**
* Reference container customized positioning through shortcode
*
* - Adding: Reference container: support for custom position shortcode, thanks to @hamshe issue report.
*
* @since 2.2.0
* @date 2020-12-13T2057+0100
*
* @reporter @hamshe
* @link https://wordpress.org/support/topic/reference-container-in-elementor/
*
*
* - Bugfix: Reference container: delete position shortcode if unused because position may be widget or footer, thanks to @hamshe bug report.
*
* @since 2.2.5
* @date 2020-12-18T1434+0100
*
* @reporter @hamshe
* @link https://wordpress.org/support/topic/reference-container-in-elementor/#post-13784126
*
*/
// append the reference container or insert at shortcode:
$l_str_ReferenceContainerPositionShortcode = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_POSITION_SHORTCODE);
if ( empty( $l_str_ReferenceContainerPositionShortcode ) ) {
$l_str_ReferenceContainerPositionShortcode = '[[references]]';
}
if ( $p_bool_OutputReferences ) {
if ( strpos( $p_str_Content, $l_str_ReferenceContainerPositionShortcode ) !== false ) {
$p_str_Content = str_replace( $l_str_ReferenceContainerPositionShortcode, $this->ReferenceContainer(), $p_str_Content );
} else {
$p_str_Content .= $this->ReferenceContainer();
}
// increment the container ID:
self::$a_int_ReferenceContainerId++;
}
// delete position shortcode should any remain:
$p_str_Content = str_replace( $l_str_ReferenceContainerPositionShortcode, '', $p_str_Content );
// take a look if the LOVE ME slug should NOT be displayed on this page/post, remove the short code if found
if (strpos($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 appended:
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 $p_bool_HideFootnotesText Hide footnotes found in the string.
* @return string
*
* @since 2.0.0 various.
* @since 2.4.0 Adding: Footnote delimiters: syntax validation for balanced footnote start and end tag short codes.
* @since 2.5.0 Bugfix: Footnote delimiters: Syntax validation: exclude certain cases involving scripts, thanks to @andreasra bug report.
* @since 2.5.0 Bugfix: Footnote delimiters: Syntax validation: complete message with hint about setting, thanks to @andreasra bug report.
* @since 2.5.0 Bugfix: Footnote delimiters: Syntax validation: limit length of quoted string to 300 characters, thanks to @andreasra bug report.
*/
public function search($p_str_Content, $p_bool_ConvertHtmlChars, $p_bool_HideFootnotesText) {
// post ID to make everything unique wrt infinite scroll and archive view
self::$a_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;
}
/**
* Footnote delimiter syntax validation
*
* - Adding: Footnote delimiters: syntax validation for balanced footnote start and end tag short codes.
*
* @since 2.4.0
*
*
* - Bugfix: Footnote delimiters: Syntax validation: exclude certain cases involving scripts, thanks to @andreasra bug report.
* - Bugfix: Footnote delimiters: Syntax validation: complete message with hint about setting, thanks to @andreasra bug report.
* - Bugfix: Footnote delimiters: Syntax validation: limit length of quoted string to 300 characters, thanks to @andreasra bug report.
*
* @since 2.5.0
* @date 2021-01-07T0824+0100
*
* @reporter @andreasra
* @link https://wordpress.org/support/topic/warning-unbalanced-footnote-start-tag-short-code-before/
*
*
* If footnotes short codes are unbalanced, and syntax validation is not disabled,
* prepend a warning to the content; displays de facto beneath the post title.
*/
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTE_SHORTCODE_SYNTAX_VALIDATION_ENABLE))) {
// make shortcodes conform to regex syntax:
$l_str_StartTagRegex = preg_replace( '#([\(\)\{\}\[\]\*\.\?\!])#', '\\\\$1', $l_str_StartingTag );
$l_str_EndTagRegex = preg_replace( '#([\(\)\{\}\[\]\*\.\?\!])#', '\\\\$1', $l_str_EndingTag );
// apply different regex depending on whether start shortcode is double/triple opening parenthesis:
if ( $l_str_StartingTag == '((' || $l_str_StartingTag == '(((' ) {
// this prevents from catching a script containing e.g. a double opening parenthesis:
$l_str_ValidationRegex = '#' . $l_str_StartTagRegex . '(((?!' . $l_str_EndTagRegex . ')[^\{\}])*?)(' . $l_str_StartTagRegex . '|$)#s';
} else {
// catch all only if the start shortcode is not double/triple opening parenthesis, i.e. is unlikely to occur in scripts:
$l_str_ValidationRegex = '#' . $l_str_StartTagRegex . '(((?!' . $l_str_EndTagRegex . ').)*?)(' . $l_str_StartTagRegex . '|$)#s';
}
// check syntax and get error locations:
preg_match( $l_str_ValidationRegex, $p_str_Content, $p_arr_ErrorLocation );
if ( empty( $p_arr_ErrorLocation ) ) {
self::$a_bool_SyntaxErrorFlag = false;
}
// prevent generating and inserting the warning multiple times:
if ( self::$a_bool_SyntaxErrorFlag ) {
// get plain text string for error location:
$l_str_ErrorSpotString = strip_tags( $p_arr_ErrorLocation[1] );
// limit string length to 300 characters:
if ( strlen( $l_str_ErrorSpotString ) > 300 ) {
$l_str_ErrorSpotString = substr( $l_str_ErrorSpotString, 0, 299 ) . '…';
}
// compose warning box:
$l_str_SyntaxErrorWarning = '<div class="footnotes_validation_error"><p>';
$l_str_SyntaxErrorWarning .= __("WARNING: unbalanced footnote start tag short code found.", MCI_Footnotes_Config::C_STR_PLUGIN_NAME);
$l_str_SyntaxErrorWarning .= '</p><p>';
// syntax validation setting in the dashboard under the General settings tab:
$l_str_SyntaxErrorWarning .= sprintf( __("If this warning is irrelevant, please disable the syntax validation feature in the dashboard under %s &gt; %s &gt; %s.", MCI_Footnotes_Config::C_STR_PLUGIN_NAME), __("General settings", MCI_Footnotes_Config::C_STR_PLUGIN_NAME), __("Footnote start and end short codes", MCI_Footnotes_Config::C_STR_PLUGIN_NAME), __("Check for balanced shortcodes", MCI_Footnotes_Config::C_STR_PLUGIN_NAME) );
$l_str_SyntaxErrorWarning .= '</p><p>';
$l_str_SyntaxErrorWarning .= __("Unbalanced start tag short code found before:", MCI_Footnotes_Config::C_STR_PLUGIN_NAME);
$l_str_SyntaxErrorWarning .= '</p><p>“';
$l_str_SyntaxErrorWarning .= $l_str_ErrorSpotString;
$l_str_SyntaxErrorWarning .= '”</p></div>';
// prepend the warning box to the content:
$p_str_Content = $l_str_SyntaxErrorWarning . $p_str_Content;
// checked, set flag to false to prevent duplicate warning:
self::$a_bool_SyntaxErrorFlag = false;
return $p_str_Content;
}
}
// load referrer templates if footnotes text not hidden:
if (!$p_bool_HideFootnotesText) {
// load footnote referrer template file:
if (self::$a_bool_AlternativeTooltipsEnabled) {
$l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "footnote-alternative");
} else {
$l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "footnote");
}
/**
* Call Boolean again for robustness when priority levels don’t match any longer.
*
* - Bugfix: Tooltips: fix display in Popup Maker popups by correcting a coding error.
*
* @since 2.5.4
* @see self::add_filter('pum_popup_content', array($this, "the_content"), $l_int_TheContentPriority)
*/
self::$a_bool_TooltipsEnabled = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_ENABLED));
self::$a_bool_AlternativeTooltipsEnabled = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_ALTERNATIVE));
// load tooltip inline script if jQuery tooltips are enabled:
if (self::$a_bool_TooltipsEnabled && ! self::$a_bool_AlternativeTooltipsEnabled) {
$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 start tag short code:
$i_int_LenContent = strlen($p_str_Content);
if ($l_int_PosStart > $i_int_LenContent) $l_int_PosStart = $i_int_LenContent;
$l_int_PosStart = strpos($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 the footnote end tag short code:
$l_int_PosEnd = strpos($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));
// get tooltip text if present:
self::$a_str_TooltipShortcode = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_TOOLTIP_EXCERPT_DELIMITER);
self::$a_int_TooltipShortcodeLength = strlen( self::$a_str_TooltipShortcode );
$l_int_TooltipTextLength = strpos( $l_str_FootnoteText, self::$a_str_TooltipShortcode );
$l_bool_HasTooltipText = $l_int_TooltipTextLength === false ? false : true;
if ( $l_bool_HasTooltipText ) {
$l_str_TooltipText = substr( $l_str_FootnoteText, 0, $l_int_TooltipTextLength );
} else {
$l_str_TooltipText = '';
}
/**
* URL line wrapping for Unicode non conformant browsers
*
* @since 2.1.1 (CSS)
* @since 2.1.4 (PHP)
*
* Despite Unicode recommends to line-wrap URLs at slashes, and Firefox follows
* the Unicode standard, Chrome does not, making long URLs hang out of tooltips
* or extend reference containers, so that the end is hidden outside the window
* and may eventually be viewed after we scroll horizontally or zoom out. It is
* up to the web page to make URLs breaking anywhere by wrapping them in a span
* that is assigned appropriate CSS properties and values.
* @see css/public.css
*
* - Bugfix: Tooltips: fix line breaking for hyperlinked URLs in Unicode-non-compliant user agents, thanks to @andreasra bug report.
*
* @since 2.1.1
*
* @reporter @andreasra
* @link https://wordpress.org/support/topic/footnotes-appearing-in-header/page/3/#post-13657398
*
*
* - Bugfix: Reference container: fix width in mobile view by URL wrapping for Unicode-non-conformant browsers, thanks to @karolszakiel bug report.
*
* @since 2.1.3
* @date 2020-11-23
*
* @reporter @karolszakiel
* @link https://wordpress.org/support/topic/footnotes-on-mobile-phones/
*
*
* - Bugfix: Reference container, tooltips: fix line wrapping of URLs (hyperlinked or not) based on pattern, not link element.
*
* @since 2.1.4
* @date 2020-11-25T0837+0100
* @link https://wordpress.org/support/topic/footnotes-on-mobile-phones/#post-13710682
*
*
* - Bugfix: Reference container, tooltips: URL wrap: exclude image source too, thanks to @bjrnet21 bug report.
*
* @since 2.1.5
*
* @reporter @bjrnet21
* @link https://wordpress.org/support/topic/2-1-4-breaks-on-my-site-images-dont-show/
*
*
* - Bugfix: Reference container, tooltips: URL wrap: fix regex, thanks to @a223123131 bug report.
*
* @since 2.1.6
* @date 2020-12-09T1921+0100
*
* @reporter @a223123131
* @link https://wordpress.org/support/topic/broken-layout-starting-version-2-1-4/
*
* Even ARIA labels may take a URL as value, so use \w=[\'"] as a catch-all 2020-12-10T1005+0100
*
* - Bugfix: Dashboard: URL wrap: add option to properly enable/disable URL wrap.
*
* @since 2.1.6
* @date 2020-12-09T1606+0100
*
*
* - Bugfix: Reference container, tooltips: URL wrap: make the quotation mark optional wrt query parameters, thanks to @spiralofhope2 bug report.
*
* @since 2.2.6
* @date 2020-12-23T0409+0100
*
* @reporter @spiralofhope2
* @link https://wordpress.org/support/topic/two-links-now-breaks-footnotes-with-blogtext/
*
*
* - Bugfix: Reference container, tooltips: URL wrap: remove a bug introduced in the regex, thanks to @rjl20 @spaceling @lukashuggenberg @klusik @friedrichnorth @bernardzit bug reports.
*
* @since 2.2.7
* @date 2020-12-23T1046+0100
*
* @reporter @rjl20
* @link https://wordpress.org/support/topic/two-links-now-breaks-footnotes-with-blogtext/#post-13825479
*
* @reporter @spaceling
* @link https://wordpress.org/support/topic/two-links-now-breaks-footnotes-with-blogtext/#post-13825532
*
* @reporter @lukashuggenberg
* @link https://wordpress.org/support/topic/2-2-6-breaks-all-footnotes/
*
* @reporter @klusik
* @link https://wordpress.org/support/topic/2-2-6-breaks-all-footnotes/#post-13825885
*
* @reporter @friedrichnorth
* @link https://wordpress.org/support/topic/footnotes-dont-show-after-update-to-2-2-6/
*
* @reporter @bernardzit
* @link https://wordpress.org/support/topic/footnotes-dont-show-after-update-to-2-2-6/#post-13826029
*
*
* @since 2.2.8 Bugfix: Reference container, tooltips: URL wrap: correctly make the quotation mark optional wrt query parameters, thanks to @spiralofhope2 bug report.
* @date 2020-12-23T1107+0100
*
* Correct is duplicating the negative lookbehind w/o quotes: '(?<!\w=)'
*
* @since 2.2.9 Bugfix: Reference container, tooltips: URL wrap: account for RFC 2396 allowed characters in parameter names.
* @date 2020-12-24T1956+0100
* @link https://stackoverflow.com/questions/814700/http-url-allowed-characters-in-parameter-names
*
* @since 2.2.9 Bugfix: Reference container, tooltips: URL wrap: exclude URLs also where the equals sign is preceded by an entity or character reference.
* @date 2020-12-25T1251+0100
*
* @since 2.2.10 Bugfix: Reference container, tooltips: URL wrap: support also file transfer protocol URLs.
* @date 2020-12-25T2220+0100
*
*
* - Bugfix: Reference container, tooltips: URL wrap: exclude URL pattern as folder name in Wayback Machine URL, thanks to @rumperuu bug report.
*
* @since 2.5.3
* @date 2021-01-24
*
* @reporter @rumperuu
* @link https://wordpress.org/support/topic/line-wrap-href-regex-bug/
*
* By adding a 3rd negative lookbehind: '(?<!/)'.
*
*
* - Bugfix: Reference container, tooltips: URL wrap: account for leading space in value, thanks to @karolszakiel example provision.
*
* @since 2.5.4
*
* @reporter @karolszakiel
* @link https://wordpress.org/support/topic/footnotes-on-mobile-phones/
*
* The value of an href argument may have leading (and trailing) space.
* @link https://webmasters.stackexchange.com/questions/93540/are-spaces-in-href-valid
* Needs to replicate the relevant negative lookbehind at least with one and with two spaces.
* Note: The WordPress blog engine edits these values, cropping these leading/trailing spaces.
* But given they can occur on WP-powered websites, some page builders may probably not.
*/
if ( MCI_Footnotes_Convert::toBool( MCI_Footnotes_Settings::instance()->get( MCI_Footnotes_Settings::C_BOOL_FOOTNOTE_URL_WRAP_ENABLED ) ) ) {
$l_str_FootnoteText = preg_replace(
'#(?<![-\w\.!~\*\'\(\);]=[\'"])(?<![-\w\.!~\*\'\(\);]=[\'"] )(?<![-\w\.!~\*\'\(\);]=[\'"] )(?<![-\w\.!~\*\'\(\);]=)(?<!/)((ht|f)tps?://[^\\s<]+)#',
'<span class="footnote_url_wrap">$1</span>',
$l_str_FootnoteText
);
}
// Text to be displayed instead of the footnote
$l_str_FootnoteReplaceText = "";
// whether hard links are enabled:
if (self::$a_bool_HardLinksEnable) {
// get the configurable parts:
self::$a_str_ReferrerLinkSlug = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERRER_FRAGMENT_ID_SLUG);
self::$a_str_FootnoteLinkSlug = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTE_FRAGMENT_ID_SLUG);
self::$a_str_LinkIdsSeparator = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_HARD_LINK_IDS_SEPARATOR);
// streamline ID concatenation:
self::$a_str_PostContainerIdCompound = self::$a_str_LinkIdsSeparator;
self::$a_str_PostContainerIdCompound .= self::$a_int_PostId;
self::$a_str_PostContainerIdCompound .= self::$a_str_LinkIdsSeparator;
self::$a_str_PostContainerIdCompound .= self::$a_int_ReferenceContainerId;
self::$a_str_PostContainerIdCompound .= self::$a_str_LinkIdsSeparator;
}
// display the footnote referrers and the tooltips:
if (!$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 a truncated footnote text if option enabled:
$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));
// define excerpt text as footnote text by default:
$l_str_ExcerptText = $l_str_FootnoteText;
/**
* Tooltip truncation
*
* - Adding: Tooltips: Read-on button: Label: configurable instead of localizable, thanks to @rovanov example provision.
*
* @since 2.1.0
* @date 2020-11-08T2146+0100
*
* @reporter @rovanov
* @link https://wordpress.org/support/topic/offset-x-axis-and-offset-y-axis-does-not-working/
*
* If the tooltip truncation option is enabled, it’s done based on character count,
* and a trailing incomplete word is cropped.
* This is equivalent to the WordPress default excerpt generation, i.e. without a
* custom excerpt and without a delimiter. But WordPress does word count, usually 55.
*/
if (self::$a_bool_TooltipsEnabled && $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 .= '&nbsp;&#x2026; <';
$l_str_ExcerptText .= self::$a_bool_HardLinksEnable ? 'a' : 'span';
$l_str_ExcerptText .= ' class="footnote_tooltip_continue" ';
$l_str_ExcerptText .= 'onclick="footnote_moveToAnchor_' . self::$a_int_PostId;
$l_str_ExcerptText .= '_' . self::$a_int_ReferenceContainerId;
$l_str_ExcerptText .= '(\'footnote_plugin_reference_' . self::$a_int_PostId;
$l_str_ExcerptText .= '_' . self::$a_int_ReferenceContainerId;
$l_str_ExcerptText .= "_$l_int_Index');\"";
// if enabled, add the hard link fragment ID:
if (self::$a_bool_HardLinksEnable) {
$l_str_ExcerptText .= ' href="#';
$l_str_ExcerptText .= self::$a_str_FootnoteLinkSlug;
$l_str_ExcerptText .= self::$a_str_PostContainerIdCompound;
$l_str_ExcerptText .= $l_int_Index;
$l_str_ExcerptText .= '"';
}
$l_str_ExcerptText .= '>';
/**
* Configurable read-on button label
*
* - Adding: Tooltips: Read-on button: Label: configurable instead of localizable, thanks to @rovanov example provision.
*
* @since 2.1.0
* @date 2020-11-08T2146+0100
*
* @reporter @rovanov
* @link https://wordpress.org/support/topic/offset-x-axis-and-offset-y-axis-does-not-working/
*/
$l_str_ExcerptText .= MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_TOOLTIP_READON_LABEL);
$l_str_ExcerptText .= self::$a_bool_HardLinksEnable ? '</a>' : '</span>';
}
}
/**
* Referrers element superscript or baseline
*
* Referrers: new setting for vertical align: superscript (default) or baseline (optional), thanks to @cwbayer bug report
* @since 2.1.1
*
* @reporter @cwbayer
* @link https://wordpress.org/support/topic/footnote-number-in-text-superscript-disrupts-leading/
*
* 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 {
$l_str_SupSpan = 'span';
}
// whether hard links are enabled:
if (self::$a_bool_HardLinksEnable) {
self::$a_str_LinkSpan = 'a';
self::$a_str_LinkCloseTag = '</a>';
// self::$a_str_LinkOpenTag will be defined as needed
// compose hyperlink address (leading space is in template):
$l_str_FootnoteLinkArgument = 'href="#';
$l_str_FootnoteLinkArgument .= self::$a_str_FootnoteLinkSlug;
$l_str_FootnoteLinkArgument .= self::$a_str_PostContainerIdCompound;
$l_str_FootnoteLinkArgument .= $l_int_Index;
$l_str_FootnoteLinkArgument .= '" class="footnote_hard_link"';
/**
* Compose fragment ID anchor with offset, for use in reference container.
* Empty span, child of empty span, to avoid tall dotted rectangles in browser.
*/
$l_str_ReferrerAnchorElement = '<span class="footnote_referrer_base"><span id="';
$l_str_ReferrerAnchorElement .= self::$a_str_ReferrerLinkSlug;
$l_str_ReferrerAnchorElement .= self::$a_str_PostContainerIdCompound;
$l_str_ReferrerAnchorElement .= $l_int_Index;
$l_str_ReferrerAnchorElement .= '" class="footnote_referrer_anchor"></span></span>';
} else {
/**
* Initialize hard link variables when hard links are disabled.
*
* - Bugfix: Process: initialize hard link address variables to empty string to fix 'undefined variable' bug, thanks to @a223123131 bug report.
*
* @since 2.4.0
* @date 2021-01-04T1622+0100
*
* @reporter @a223123131
* @link https://wordpress.org/support/topic/wp_debug-php-notice/
*
* If no hyperlink nor offset anchor is needed, initialize as empty.
*/
$l_str_FootnoteLinkArgument = '';
$l_str_ReferrerAnchorElement = '';
// The link element is set independently as it may be needed for styling:
if ( MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_LINK_ELEMENT_ENABLED)) ) {
self::$a_str_LinkSpan = 'a';
self::$a_str_LinkOpenTag = '<a>';
self::$a_str_LinkCloseTag = '</a>';
}
}
// determine tooltip content:
if ( self::$a_bool_TooltipsEnabled ) {
$l_str_TooltipContent = $l_bool_HasTooltipText ? $l_str_TooltipText : $l_str_ExcerptText;
} else {
$l_str_TooltipContent = '';
}
/**
* Determine shrink width if alternative tooltips are enabled.
*
* @since 2.5.6
*/
$l_str_TooltipStyle = '';
if ( self::$a_bool_AlternativeTooltipsEnabled && self::$a_bool_TooltipsEnabled ) {
$l_int_TooltipLength = strlen( strip_tags( $l_str_TooltipContent ) );
if ( $l_int_TooltipLength < 70 ) {
$l_str_TooltipStyle = ' style="width: ';
$l_str_TooltipStyle .= ( $l_int_TooltipLength * .7 );
$l_str_TooltipStyle .= 'em;"';
}
}
// fill in 'templates/public/footnote.html':
$l_obj_Template->replace(
array(
"link-span" => self::$a_str_LinkSpan,
"post_id" => self::$a_int_PostId,
"container_id" => self::$a_int_ReferenceContainerId,
"note_id" => $l_int_Index,
"hard-link" => $l_str_FootnoteLinkArgument,
"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),
"anchor-element" => $l_str_ReferrerAnchorElement,
"style" => $l_str_TooltipStyle,
"text" => $l_str_TooltipContent,
)
);
$l_str_FootnoteReplaceText = $l_obj_Template->getContent();
// reset the template
$l_obj_Template->reload();
// if standard tooltips are enabled but alternative are not:
if (self::$a_bool_TooltipsEnabled && ! self::$a_bool_AlternativeTooltipsEnabled) {
$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':
$l_obj_TemplateTooltip->replace(
array(
"post_id" => self::$a_int_PostId,
"container_id" => self::$a_int_ReferenceContainerId,
"note_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++;
}
/**
* Fixes a footnotes numbering bug (happening under de facto rare circumstances).
*
* - Bugfix: Fixed occasional bug where footnote ordering could be out of sequence
*
* @since 1.6.4
* @date 2016-06-29T0054+0000
* @committer @dartiss
* @link https://plugins.trac.wordpress.org/browser/footnotes/trunk/class/task.php?rev=1445718 @dartiss’ class/task.php
* @link https://plugins.trac.wordpress.org/log/footnotes/trunk/class/task.php?rev=1445718 @dartiss re-added class/task.php
* @link https://plugins.trac.wordpress.org/browser/footnotes/trunk/class?rev=1445711 class/ w/o task.php
* @link https://plugins.trac.wordpress.org/changeset/1445711/footnotes/trunk/class @dartiss deleted class/task.php
* @link https://plugins.trac.wordpress.org/browser/footnotes/trunk/class/task.php?rev=1026210 @aricura’s latest class/task.php
*
*
* - Bugfix: Process: fix numbering bug impacting footnote #2 with footnote #1 close to start, thanks to @rumperuu bug report, thanks to @lolzim code contribution.
*
* @since 2.5.5
*
* @contributor @lolzim
* @link https://wordpress.org/support/topic/footnotes-numbered-incorrectly/#post-14062032
*
* @reporter @rumperuu
* @link https://wordpress.org/support/topic/footnotes-numbered-incorrectly/
*
* This assignment was overridden by another one, causing the algorithm to jump back
* near the post start to a position calculated as the sum of the length of the last
* footnote and the length of the last footnote replace text.
* A bug disturbing the order of the footnotes depending on the text before the first
* footnote, the length of the first footnote and the length of the templates for the
* footnote and the tooltip. Moreover, it was causing non-trivial process garbage.
*/
// add offset to the new starting position
$l_int_PosStart += $l_int_Length + strlen($l_str_EndingTag);
} while (true);
// return content
return $p_str_Content;
}
/**
* Generates the reference container.
*
* @author Stefan Herndler
* @since 1.5.0
* @return string
*
* @since 2.0.0 Update: remove backlink symbol along with column 2 of the reference container
* @since 2.0.3 Bugfix: prepend an arrow on user request
* @since 2.0.6 Bugfix: Reference container: fix line breaking behavior in footnote number clusters.
* @since 2.0.4 Bugfix: restore the arrow select and backlink symbol input settings
* @since 2.1.1 Bugfix: Referrers, reference container: Combining identical footnotes: fix dead links and ensure referrer-backlink bijectivity, thanks to @happyches bug report.
* @since 2.1.1 Bugfix: Reference container: Backlink symbol: make optional, not suggest configuring it to invisible, thanks to @spaceling feedback.
*/
public function ReferenceContainer() {
// no footnotes have been replaced on this page:
if (empty(self::$a_arr_Footnotes)) {
return "";
}
/**
* Footnote index backlink symbol
*
* - Bugfix: Reference container: Backlink symbol: make optional, not suggest configuring it to invisible, thanks to @spaceling feedback.
*
* @since 2.1.1
*
* @reporter @spaceling
* @link https://wordpress.org/support/topic/change-the-position-5/page/2/#post-13671138
*
* If the backlink symbol 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 = '<span class="footnote_index_arrow">';
$l_str_FootnoteArrow .= $l_str_Arrow . '</span>';
} else {
// If the backlink symbol isn’t enabled, set it to empty:
$l_str_Arrow = '';
$l_str_FootnoteArrow = '';
}
/**
* Backlink separator
*
* - Bugfix: Reference container: make separating and terminating punctuation optional and configurable, thanks to @docteurfitness issue report and code contribution.
*
* @since 2.1.4
* @date 2020-11-28T1048+0100
*
* @contributor @docteurfitness
* @link https://wordpress.org/support/topic/update-2-1-3/#post-13704194
*
* @reporter @docteurfitness
* @link https://wordpress.org/support/topic/update-2-1-3/
*
* Initially a comma was appended in this algorithm for enumerations.
* The comma in enumerations is not generally preferred.
*/
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_BACKLINKS_SEPARATOR_ENABLED))) {
// check if it is input-configured:
$l_str_Separator = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_BACKLINKS_SEPARATOR_CUSTOM);
if (empty($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 = '&nbsp;&#x2013;'; 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 configurable:
*/
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_BACKLINKS_TERMINATOR_ENABLED))) {
// check if it is input-configured:
$l_str_Terminator = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_BACKLINKS_TERMINATOR_CUSTOM);
if (empty($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
*
* - Bugfix: Reference container: Backlinks: fix stacked enumerations by adding optional line breaks.
*
* @since 2.1.4
* @date 2020-11-28T1049+0100
*
* 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)) ? '<br />' : ' ';
/**
* 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
*
* - Bugfix: Reference container: option to restore pre-2.0.0 layout with the backlink symbol in an extra column.
*
* @since 2.1.1
* @date 2020-11-16T2024+0100
*/
// 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");
}
}
}
/**
* Switch backlink symbol and footnote number
*
* - Bugfix: Reference container: option to append symbol (prepended by default), thanks to @spaceling code contribution.
*
* @since 2.1.1
* @date 2020-11-16T2024+0100
*
* @contributor @spaceling
* @link https://wordpress.org/support/topic/change-the-position-5/#post-13615994
*
*
* - Bugfix: Reference container: Backlink symbol: support for appending when combining identicals is on.
*
* @since 2.1.4
* @date 2020-11-26T1633+0100
*/
$l_bool_SymbolSwitch = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_BACKLINK_SYMBOL_SWITCH));
// loop through all footnotes found in the page
for ($l_int_Index = 0; $l_int_Index < count(self::$a_arr_Footnotes); $l_int_Index++) {
// get footnote text
$l_str_FootnoteText = self::$a_arr_Footnotes[$l_int_Index];
// if footnote is empty, go to the next one;
// With combine identicals turned on, identicals will be deleted and are skipped:
if (empty($l_str_FootnoteText)) {
continue;
}
// generate content of footnote index cell
$l_int_FirstFootnoteIndex = ($l_int_Index + 1);
// get the footnote index string and
// keep supporting legacy index placeholder:
$l_str_FootnoteId = MCI_Footnotes_Convert::Index(($l_int_Index + 1), MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_COUNTER_STYLE));
/**
* Case of only one backlink per table row
*
* If enabled, and for the case the footnote is single, compose hard link:
*/
// define anyway:
$l_str_HardLinkAddress = '';
if (self::$a_bool_HardLinksEnable) {
/**
* Use-Backbutton-Hint tooltip, optional and configurable.
*
* - Update: Reference container: Hard backlinks (optional): optional configurable tooltip hinting to use the backbutton instead, thanks to @theroninjedi47 bug report.
*
* @since 2.5.4
*
* @reporter @theroninjedi47
* @link https://wordpress.org/support/topic/hyperlinked-footnotes-creating-excessive-back-history/
*
* When hard links are enabled, clicks on the backlinks are logged in the browsing history.
* This tooltip hints to use the backbutton instead, so the history gets streamlined again.
* @link https://wordpress.org/support/topic/making-it-amp-compatible/#post-13837359
*/
if ( MCI_Footnotes_Convert::toBool( MCI_Footnotes_Settings::instance()->get( MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_BACKLINK_TOOLTIP_ENABLE ) ) ) {
$l_str_UseBackbuttonHint = ' title="';
$l_str_UseBackbuttonHint .= MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_BACKLINK_TOOLTIP_TEXT);
$l_str_UseBackbuttonHint .= '"';
} else {
$l_str_UseBackbuttonHint = '';
}
/**
* Compose fragment ID anchor with offset, for use in reference container.
* Empty span, child of empty span, to avoid tall dotted rectangles in browser.
*/
$l_str_FootnoteAnchorElement = '<span class="footnote_item_base"><span id="';
$l_str_FootnoteAnchorElement .= self::$a_str_FootnoteLinkSlug;
$l_str_FootnoteAnchorElement .= self::$a_str_PostContainerIdCompound;
$l_str_FootnoteAnchorElement .= $l_str_FootnoteId;
$l_str_FootnoteAnchorElement .= '" class="footnote_item_anchor"></span></span>';
// compose optional hard link address:
$l_str_HardLinkAddress = ' href="#';
$l_str_HardLinkAddress .= self::$a_str_ReferrerLinkSlug;
$l_str_HardLinkAddress .= self::$a_str_PostContainerIdCompound;
$l_str_HardLinkAddress .= $l_str_FootnoteId . '"';
$l_str_HardLinkAddress .= $l_str_UseBackbuttonHint;
// compose optional opening link tag with optional hard link, mandatory for instance:
self::$a_str_LinkOpenTag = '<a' . $l_str_HardLinkAddress;
self::$a_str_LinkOpenTag = ' class="footnote_hard_back_link">';
} else {
// define as empty, too:
$l_str_FootnoteAnchorElement = '';
}
/**
* Support for combining identicals: compose enumerated backlinks
*
* - Bugfix: Referrers, reference container: Combining identical footnotes: fix dead links and ensure referrer-backlink bijectivity, thanks to @happyches bug report.
*
* @since 2.1.1
* @date 2020-11-14T2233+0100
*
* @reporter @happyches
* @link https://wordpress.org/support/topic/custom-css-for-jumbled-references/
*
* Prepare to have single footnotes, where the click event and
* optional hard link need to be set to cover the table cell,
* for better usability and UX.
*/
// set a flag to check for the combined status of a footnote item:
$l_bool_FlagCombined = false;
// set otherwise unused variables as empty to avoid screwing up the placeholder array:
$l_str_BacklinkEvent = '';
$l_str_FootnoteBacklinks = '';
$l_str_FootnoteReference = '';
if ( MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_COMBINE_IDENTICAL_FOOTNOTES))) {
// ID, optional hard link address, and class:
$l_str_FootnoteReference = '<' . self::$a_str_LinkSpan;
$l_str_FootnoteReference .= ' id="footnote_plugin_reference_';
$l_str_FootnoteReference .= self::$a_int_PostId;
$l_str_FootnoteReference .= '_' . self::$a_int_ReferenceContainerId;
$l_str_FootnoteReference .= "_$l_str_FootnoteId\"";
if (self::$a_bool_HardLinksEnable) {
$l_str_FootnoteReference .= ' href="#';
$l_str_FootnoteReference .= self::$a_str_ReferrerLinkSlug;
$l_str_FootnoteReference .= self::$a_str_PostContainerIdCompound;
$l_str_FootnoteReference .= $l_str_FootnoteId . '"';
$l_str_FootnoteReference .= $l_str_UseBackbuttonHint;
}
$l_str_FootnoteReference .= ' class="footnote_backlink"';
// the click event goes in the table cell if footnote remains single:
$l_str_BacklinkEvent = ' onclick="footnote_moveToAnchor_';
$l_str_BacklinkEvent .= self::$a_int_PostId;
$l_str_BacklinkEvent .= '_' . self::$a_int_ReferenceContainerId;
$l_str_BacklinkEvent .= "('footnote_plugin_tooltip_";
$l_str_BacklinkEvent .= self::$a_int_PostId;
$l_str_BacklinkEvent .= '_' . self::$a_int_ReferenceContainerId;
$l_str_BacklinkEvent .= "_$l_str_FootnoteId');\"";
// the dedicated template enumerating backlinks uses another variable:
$l_str_FootnoteBacklinks = $l_str_FootnoteReference;
// append the click event right to the backlink item for enumerations;
// else it goes in the table cell:
$l_str_FootnoteBacklinks .= $l_str_BacklinkEvent . '>';
$l_str_FootnoteReference .= '>';
// append the optional offset anchor for hard links:
if (self::$a_bool_HardLinksEnable) {
$l_str_FootnoteReference .= $l_str_FootnoteAnchorElement;
$l_str_FootnoteBacklinks .= $l_str_FootnoteAnchorElement;
}
// continue both single note and notes cluster, depending on switch option status:
if ($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$l_str_FootnoteId";
}
// If that is the only footnote with this text, we’re almost done.
// check if it isn't the last footnote in the array:
if ($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] = "";
// set the flag to true for the combined status:
$l_bool_FlagCombined = true;
// 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</";
$l_str_FootnoteBacklinks .= self::$a_str_LinkSpan . '>';
$l_str_FootnoteBacklinks .= $l_str_LineBreak;
$l_str_FootnoteBacklinks .= '<' . self::$a_str_LinkSpan;
$l_str_FootnoteBacklinks .= ' id="footnote_plugin_reference_';
$l_str_FootnoteBacklinks .= self::$a_int_PostId;
$l_str_FootnoteBacklinks .= '_' . self::$a_int_ReferenceContainerId;
$l_str_FootnoteBacklinks .= "_$l_str_FootnoteId\"";
// insert the optional hard link address:
if (self::$a_bool_HardLinksEnable) {
$l_str_FootnoteBacklinks .= ' href="#';
$l_str_FootnoteBacklinks .= self::$a_str_ReferrerLinkSlug;
$l_str_FootnoteBacklinks .= self::$a_str_PostContainerIdCompound;
$l_str_FootnoteBacklinks .= $l_str_FootnoteId . '"';
$l_str_FootnoteBacklinks .= $l_str_UseBackbuttonHint;
}
$l_str_FootnoteBacklinks .= ' class="footnote_backlink"';
$l_str_FootnoteBacklinks .= ' onclick="footnote_moveToAnchor_';
$l_str_FootnoteBacklinks .= self::$a_int_PostId;
$l_str_FootnoteBacklinks .= '_' . self::$a_int_ReferenceContainerId;
$l_str_FootnoteBacklinks .= "('footnote_plugin_tooltip_";
$l_str_FootnoteBacklinks .= self::$a_int_PostId;
$l_str_FootnoteBacklinks .= '_' . self::$a_int_ReferenceContainerId;
$l_str_FootnoteBacklinks .= "_$l_str_FootnoteId');\">";
// append the offset anchor for optional hard links:
if (self::$a_bool_HardLinksEnable) {
$l_str_FootnoteBacklinks .= '<span class="footnote_item_base"><span id="';
$l_str_FootnoteBacklinks .= self::$a_str_FootnoteLinkSlug;
$l_str_FootnoteBacklinks .= self::$a_str_PostContainerIdCompound;
$l_str_FootnoteBacklinks .= $l_str_FootnoteId;
$l_str_FootnoteBacklinks .= '" class="footnote_item_anchor"></span></span>';
}
$l_str_FootnoteBacklinks .= $l_bool_SymbolSwitch ? '' : $l_str_FootnoteArrow;
$l_str_FootnoteBacklinks .= $l_str_FootnoteId;
$l_str_FootnoteBacklinks .= $l_bool_SymbolSwitch ? $l_str_FootnoteArrow : '';
}
}
}
// append terminator and end tag:
$l_str_FootnoteReference .= $l_str_Terminator . '</' . self::$a_str_LinkSpan . '>';
$l_str_FootnoteBacklinks .= $l_str_Terminator . '</' . self::$a_str_LinkSpan . '>';
}
// line wrapping of URLs already fixed, see above
// get reference container item text if tooltip text goes separate:
$l_int_TooltipTextLength = strpos( $l_str_FootnoteText, self::$a_str_TooltipShortcode );
$l_bool_HasTooltipText = $l_int_TooltipTextLength === false ? false : true;
if ( $l_bool_HasTooltipText ) {
$l_str_NotTooltipText = substr( $l_str_FootnoteText, ( $l_int_TooltipTextLength + self::$a_int_TooltipShortcodeLength ) );
self::$a_bool_MirrorTooltipText = MCI_Footnotes_Convert::toBool( MCI_Footnotes_Settings::instance()->get( MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_TOOLTIP_EXCERPT_MIRROR_ENABLE ) );
if ( self::$a_bool_MirrorTooltipText ) {
$l_str_TooltipText = substr( $l_str_FootnoteText, 0, $l_int_TooltipTextLength );
$l_str_ReferenceTextIntroducer = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_TOOLTIP_EXCERPT_MIRROR_SEPARATOR);
$l_str_ReferenceText = $l_str_TooltipText . $l_str_ReferenceTextIntroducer . $l_str_NotTooltipText;
} else {
$l_str_ReferenceText = $l_str_NotTooltipText;
}
} else {
$l_str_ReferenceText = $l_str_FootnoteText;
}
// replace all placeholders in table row template:
$l_obj_Template->replace(
array(
// placeholder used in all templates:
"text" => $l_str_ReferenceText,
// used in standard layout W/O COMBINED FOOTNOTES:
"post_id" => self::$a_int_PostId,
"container_id" => self::$a_int_ReferenceContainerId,
"note_id" => MCI_Footnotes_Convert::Index($l_int_FirstFootnoteIndex, MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_COUNTER_STYLE)),
"link-start" => self::$a_str_LinkOpenTag,
"link-end" => self::$a_str_LinkCloseTag,
"link-span" => self::$a_str_LinkSpan,
"terminator" => $l_str_Terminator,
"anchor-element" => $l_str_FootnoteAnchorElement,
"hard-link" => $l_str_HardLinkAddress,
// used in standard layout WITH COMBINED IDENTICALS TURNED ON:
"pointer" => $l_bool_FlagCombined ? '' : ' pointer',
"event" => $l_bool_FlagCombined ? '' : $l_str_BacklinkEvent,
"backlinks" => $l_bool_FlagCombined ? $l_str_FootnoteBacklinks : $l_str_FootnoteReference,
// Legacy placeholders for use in legacy layout templates:
"arrow" => $l_str_FootnoteArrow,
"index" => $l_str_FootnoteId,
)
);
$l_str_Body .= $l_obj_Template->getContent();
// extra line breaks for page source readability:
$l_str_Body .= "\r\n\r\n";
$l_obj_Template->reload();
}
// call again for robustness when priority levels don’t match any longer:
self::$a_int_ScrollOffset = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_SCROLL_OFFSET));
// streamline:
$l_bool_CollapseDefault = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_COLLAPSE));
/**
* Reference container label
*
* - Bugfix: Reference container: Label: set empty label to U+202F NNBSP for more robustness, thanks to @lukashuggenberg feedback.
*
* @since 2.4.0
* @date 2021-01-04T0504+0100
*
* @reporter @lukashuggenberg
*
* Themes may drop-cap a first letter of initial paragraphs, like this label.
* In case of empty label that would apply to the left half button character.
* Hence the point in setting an empty label to U+202F NARROW NO-BREAK SPACE.
*/
$l_str_ReferenceContainerLabel = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_NAME);
/**
* Select the reference container template according to the script mode.
*
* - Bugfix: Reference container: optional alternative expanding and collapsing without jQuery for use with hard links, thanks to @hopper87it @pkverma99 issue reports.
*
* @since 2.5.6
*
* @reporter @hopper87it
* @link https://wordpress.org/support/topic/footnotes-wp-rocket/
*
* @reporter @pkverma99
* @link https://wordpress.org/support/topic/footnotes-wp-rocket/#post-14076188
*/
$l_str_ScriptMode = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_REFERENCE_CONTAINER_SCRIPT_MODE);
if ( $l_str_ScriptMode == 'jquery' ) {
// load 'templates/public/reference-container.html':
$l_obj_TemplateContainer = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "reference-container");
} else {
// load 'templates/public/js-reference-container.html':
$l_obj_TemplateContainer = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "js-reference-container");
}
$l_obj_TemplateContainer->replace(
array(
"post_id" => self::$a_int_PostId,
"container_id" => self::$a_int_ReferenceContainerId,
"element" => MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_LABEL_ELEMENT),
"name" => empty($l_str_ReferenceContainerLabel) ? '&#x202F;' : $l_str_ReferenceContainerLabel,
"button-style" => !$l_bool_CollapseDefault ? 'display: none;' : '',
"style" => $l_bool_CollapseDefault ? 'display: none;' : '',
"content" => $l_str_Body,
"scroll-offset" => (self::$a_int_ScrollOffset / 100),
"scroll-duration" => intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_SCROLL_DURATION)),
)
);
// free all found footnotes if reference container will be displayed
self::$a_arr_Footnotes = array();
return $l_obj_TemplateContainer->getContent();
}
}
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