58b3dd27f6
- Add: Setting to enable/disable the mouse-over box - Add: Current WordPress Theme to the Diagnostics sub page - Add: ManFisher note in the "other Plugins" sub page - Update: Removed unnecessary hidden inputs from the Settings page - Update: Merged public CSS files to reduce the output and improve the performance - Update: Translations (EN and DE) - Bugfix: Removed the 'trim' function to allow whitespaces at the beginning and end of each setting - Bugfix: Convert the footnotes short code to HTML special chars when adding them into the page/post editor (visual and text) - Bugfix: Detailed error messages if other Plugins can't be loaded. Also added empty strings as default values to avoid 'undefined' git-svn-id: https://plugins.svn.wordpress.org/footnotes/trunk@1000036 b8457f37-d9ea-0310-8a92-e5e31aec5664
378 lines
16 KiB
PHP
378 lines
16 KiB
PHP
<?php
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/**
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* Includes the core function of the Plugin - Search and Replace the Footnotes.
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*
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* @filesource
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* @author Stefan Herndler
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* @since 1.5.0
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*/
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/**
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* Looks for Footnotes short codes and replaces them. Also displays the Reference Container.
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*
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* @author Stefan Herndler
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* @since 1.5.0
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*/
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class MCI_Footnotes_Task {
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/**
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* Contains all footnotes found on current public page.
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*
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* @author Stefan Herndler
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* @since 1.5.0
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* @var array
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*/
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public static $a_arr_Footnotes = array();
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/**
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* Flag if the display of 'LOVE FOOTNOTES' is allowed on the current public page.
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*
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* @author Stefan Herndler
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* @since 1.5.0
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* @var bool
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*/
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public static $a_bool_AllowLoveMe = true;
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/**
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* Register WordPress Hooks to replace Footnotes in the content of a public page.
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*
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* @author Stefan Herndler
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* @since 1.5.0
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*/
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public function registerHooks() {
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// append custom css to the header
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add_filter('wp_head', array($this, "Header"));
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// append the reference container to the footer
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add_filter('get_footer', array($this, "Footer"));
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// append the love and share me slug to the footer
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add_filter('wp_footer', array($this, "Love"));
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// replace footnotes in the content of the page/post
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add_filter('the_content', array($this, "Content"), PHP_INT_MAX);
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// search for footnotes in the excerpt
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add_filter('the_excerpt', array($this, "Excerpt"), PHP_INT_MAX);
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add_filter('get_the_excerpt', array($this, "Excerpt"), PHP_INT_MAX);
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// replace footnotes in the content of a widget
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add_filter('widget_text', array($this, "WidgetText"), PHP_INT_MAX);
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}
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/**
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* Outputs the custom css to the header of the public page.
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*
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* @author Stefan Herndler
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* @since 1.5.0
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*/
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public function Header() {
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?>
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<style type="text/css" media="screen"><?php echo MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_CUSTOM_CSS) ?></style>
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<?php
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// reset stored footnotes when displaying the header
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self::$a_arr_Footnotes = array();
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//ob_start();
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}
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/**
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* Displays the Reference Container if set to the footer.
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*
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* @author Stefan Herndler
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* @since 1.5.0
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*/
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public function Footer() {
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if (MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_POSITION) == "footer") {
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echo $this->ReferenceContainer();
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}
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}
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/**
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* Displays the 'LOVE FOOTNOTES' slug if enabled.
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*
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* @author Stefan Herndler
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* @since 1.5.0
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*/
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public function Love() {
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/*$l_str_Content = ob_get_contents();
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$l_str_Content = $this->exec($l_str_Content, false);
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ob_end_clean();
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echo $l_str_Content;*/
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// get setting for love and share this plugin
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$l_str_LoveMeIndex = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_LOVE);
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// check if the admin allows to add a link to the footer
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if (empty($l_str_LoveMeIndex) || strtolower($l_str_LoveMeIndex) == "no" || !self::$a_bool_AllowLoveMe) {
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return;
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}
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// set a hyperlink to the word "footnotes" in the Love slug
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$l_str_LinkedName = sprintf('<a href="http://wordpress.org/plugins/footnotes/" target="_blank" style="text-decoration:none;">%s</a>',MCI_Footnotes_Config::C_STR_PLUGIN_PUBLIC_NAME);
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// get random love me text
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if (strtolower($l_str_LoveMeIndex) == "random") {
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$l_str_LoveMeIndex = "text-" . rand(1,3);
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}
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switch ($l_str_LoveMeIndex) {
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case "text-1":
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$l_str_LoveMeText = sprintf(__('I %s %s', MCI_Footnotes_Config::C_STR_PLUGIN_NAME), MCI_Footnotes_Config::C_STR_LOVE_SYMBOL, $l_str_LinkedName);
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break;
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case "text-2":
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$l_str_LoveMeText = sprintf(__('this site uses the awesome %s Plugin', MCI_Footnotes_Config::C_STR_PLUGIN_NAME), $l_str_LinkedName);
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break;
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case "text-3":
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default:
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$l_str_LoveMeText = sprintf(__('extra smooth %s', MCI_Footnotes_Config::C_STR_PLUGIN_NAME), $l_str_LinkedName);
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break;
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}
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echo sprintf('<div style="text-align:center; color:#acacac;">%s</div>', $l_str_LoveMeText);
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}
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/**
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* Replaces footnotes in the content of the current page/post.
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*
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* @author Stefan Herndler
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* @since 1.5.0
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* @param string $p_str_Content Page/Post content.
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* @return string Content with replaced footnotes.
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*/
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public function Content($p_str_Content) {
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// appends the reference container if set to "post_end"
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return $this->exec($p_str_Content, MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_POSITION) == "post_end" ? true : false);
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}
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/**
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* Replaces footnotes in the excerpt of the current page/post.
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*
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* @author Stefan Herndler
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* @since 1.5.0
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* @param string $p_str_Content Page/Post content.
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* @return string Content with replaced footnotes.
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*/
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public function Excerpt($p_str_Content) {
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return $this->exec($p_str_Content, false, !MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_IN_EXCERPT)));
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}
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/**
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* Replaces footnotes in the content of the current widget.
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*
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* @author Stefan Herndler
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* @since 1.5.0
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* @param string $p_str_Content Widget content.
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* @return string Content with replaced footnotes.
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*/
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public function WidgetText($p_str_Content) {
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// appends the reference container if set to "post_end"
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return $this->exec($p_str_Content, MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_POSITION) == "post_end" ? true : false);
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}
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/**
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* Replaces all footnotes that occur in the given content.
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*
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* @author Stefan Herndler
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* @since 1.5.0
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* @param string $p_str_Content Any string that may contain footnotes to be replaced.
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* @param bool $p_bool_OutputReferences Appends the Reference Container to the output if set to true, default true.
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* @param bool $p_bool_HideFootnotesText Hide footnotes found in the string.
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* @return string
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*/
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public function exec($p_str_Content, $p_bool_OutputReferences = false, $p_bool_HideFootnotesText = false) {
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// replace all footnotes in the content, settings are converted to html characters
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$p_str_Content = $this->search($p_str_Content, true, $p_bool_HideFootnotesText);
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// replace all footnotes in the content, settings are NOT converted to html characters
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$p_str_Content = $this->search($p_str_Content, false, $p_bool_HideFootnotesText);
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// append the reference container
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if ($p_bool_OutputReferences) {
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$p_str_Content = $p_str_Content . $this->ReferenceContainer();
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}
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// take a look if the LOVE ME slug should NOT be displayed on this page/post, remove the short code if found
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if (strpos($p_str_Content, MCI_Footnotes_Config::C_STR_NO_LOVE_SLUG) !== false) {
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self::$a_bool_AllowLoveMe = false;
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$p_str_Content = str_replace(MCI_Footnotes_Config::C_STR_NO_LOVE_SLUG, "", $p_str_Content);
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}
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// return the content with replaced footnotes and optional reference container append
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return $p_str_Content;
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}
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/**
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* Replaces all footnotes in the given content and appends them to the static property.
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*
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* @author Stefan Herndler
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* @since 1.5.0
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* @param string $p_str_Content Content to be searched for footnotes.
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* @param bool $p_bool_ConvertHtmlChars html encode settings, default true.
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* @param bool $p_bool_HideFootnotesText Hide footnotes found in the string.
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* @return string
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*/
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public function search($p_str_Content, $p_bool_ConvertHtmlChars, $p_bool_HideFootnotesText) {
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// contains the index for the next footnote on this page
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$l_int_FootnoteIndex = count(self::$a_arr_Footnotes) + 1;
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// contains the starting position for the lookup of a footnote
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$l_int_PosStart = 0;
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// get start and end tag for the footnotes short code
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$l_str_StartingTag = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_SHORT_CODE_START);
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$l_str_EndingTag = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_SHORT_CODE_END);
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if ($l_str_StartingTag == "userdefined" || $l_str_EndingTag == "userdefined") {
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$l_str_StartingTag = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_SHORT_CODE_START_USER_DEFINED);
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$l_str_EndingTag = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_SHORT_CODE_END_USER_DEFINED);
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}
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// decode html special chars
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if ($p_bool_ConvertHtmlChars) {
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$l_str_StartingTag = htmlspecialchars($l_str_StartingTag);
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$l_str_EndingTag = htmlspecialchars($l_str_EndingTag);
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}
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// if footnotes short code is empty, return the content without changes
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if (empty($l_str_StartingTag) || empty($l_str_EndingTag)) {
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return $p_str_Content;
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}
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if (!$p_bool_HideFootnotesText) {
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// load template file
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$l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "footnote");
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$l_obj_TemplateTooltip = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "tooltip");
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} else {
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$l_obj_Template = null;
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$l_obj_TemplateTooltip = null;
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}
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// search footnotes short codes in the content
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do {
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// get first occurrence of the footnote short code [start]
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$l_int_PosStart = strpos($p_str_Content, $l_str_StartingTag, $l_int_PosStart);
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// no short code found, stop here
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if ($l_int_PosStart === false) {
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break;
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}
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// get first occurrence of a footnote short code [end]
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$l_int_PosEnd = strpos($p_str_Content, $l_str_EndingTag, $l_int_PosStart);
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// no short code found, stop here
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if ($l_int_PosEnd === false) {
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break;
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}
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// calculate the length of the footnote
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$l_int_Length = $l_int_PosEnd - $l_int_PosStart;
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// get footnote text
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$l_str_FootnoteText = substr($p_str_Content, $l_int_PosStart + strlen($l_str_StartingTag), $l_int_Length - strlen($l_str_StartingTag));
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// Text to be displayed instead of the footnote
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$l_str_FootnoteReplaceText = "";
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// display the footnote as mouse-over box
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if (!$p_bool_HideFootnotesText) {
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$l_str_Index = MCI_Footnotes_Convert::Index($l_int_FootnoteIndex, MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_COUNTER_STYLE));
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// fill the footnotes template
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$l_obj_Template->replace(
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array(
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"index" => $l_str_Index,
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"text" => MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_ENABLED)) ? $l_str_FootnoteText : "",
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"before" => MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_STYLING_BEFORE),
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"after" => MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_STYLING_AFTER)
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)
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);
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$l_str_FootnoteReplaceText = $l_obj_Template->getContent();
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// reset the template
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$l_obj_Template->reload();
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if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_ENABLED))) {
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$l_obj_TemplateTooltip->replace(array("index" => $l_str_Index));
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$l_str_FootnoteReplaceText .= $l_obj_TemplateTooltip->getContent();
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$l_obj_TemplateTooltip->reload();
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}
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}
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// replace the footnote with the template
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$p_str_Content = substr_replace($p_str_Content, $l_str_FootnoteReplaceText, $l_int_PosStart, $l_int_Length + strlen($l_str_EndingTag));
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// add footnote only if not empty
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if (!empty($l_str_FootnoteText)) {
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// set footnote to the output box at the end
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self::$a_arr_Footnotes[] = $l_str_FootnoteText;
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// increase footnote index
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$l_int_FootnoteIndex++;
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}
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// add offset to the new starting position
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$l_int_PosStart += $l_int_Length + strlen($l_str_EndingTag);
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} while (true);
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// return content
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return $p_str_Content;
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}
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/**
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* Generates the reference container.
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*
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* @author Stefan Herndler
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* @since 1.5.0
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* @return string
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*/
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public function ReferenceContainer() {
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// no footnotes has been replaced on this page
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if (empty(self::$a_arr_Footnotes)) {
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return "";
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}
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// get html arrow
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$l_str_Arrow = MCI_Footnotes_Convert::getArrow(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_HYPERLINK_ARROW));
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// set html arrow to the first one if invalid index defined
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if (is_array($l_str_Arrow)) {
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$l_str_Arrow = MCI_Footnotes_Convert::getArrow(0);
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}
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// get user defined arrow
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$l_str_ArrowUserDefined = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_HYPERLINK_ARROW_USER_DEFINED);
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if (!empty($l_str_ArrowUserDefined)) {
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$l_str_Arrow = $l_str_ArrowUserDefined;
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}
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// load template file
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$l_str_Body = "";
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$l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "reference-container-body");
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// loop through all footnotes found in the page
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for ($l_str_Index = 0; $l_str_Index < count(self::$a_arr_Footnotes); $l_str_Index++) {
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// get footnote text
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$l_str_FootnoteText = self::$a_arr_Footnotes[$l_str_Index];
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// if footnote is empty, get to the next one
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if (empty($l_str_FootnoteText)) {
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continue;
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}
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// get footnote index
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$l_str_FirstFootnoteIndex = ($l_str_Index + 1);
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$l_str_FootnoteIndex = MCI_Footnotes_Convert::Index(($l_str_Index + 1), MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_COUNTER_STYLE));
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// check if it isn't the last footnote in the array
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if ($l_str_FirstFootnoteIndex < count(self::$a_arr_Footnotes) && MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_COMBINE_IDENTICAL_FOOTNOTES))) {
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// get all footnotes that I haven't passed yet
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for ($l_str_CheckIndex = $l_str_FirstFootnoteIndex; $l_str_CheckIndex < count(self::$a_arr_Footnotes); $l_str_CheckIndex++) {
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// check if a further footnote is the same as the actual one
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if ($l_str_FootnoteText == self::$a_arr_Footnotes[$l_str_CheckIndex]) {
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// set the further footnote as empty so it won't be displayed later
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self::$a_arr_Footnotes[$l_str_CheckIndex] = "";
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// add the footnote index to the actual index
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$l_str_FootnoteIndex .= ", " . MCI_Footnotes_Convert::Index(($l_str_CheckIndex + 1), MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_COUNTER_STYLE));
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}
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}
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}
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// replace all placeholders in the template
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$l_obj_Template->replace(
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array(
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"index" => $l_str_FootnoteIndex,
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"index-int" => MCI_Footnotes_Convert::Index($l_str_FirstFootnoteIndex, MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_COUNTER_STYLE)),
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"arrow" => $l_str_Arrow,
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"text" => $l_str_FootnoteText
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)
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);
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$l_str_Body .= $l_obj_Template->getContent();
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$l_obj_Template->reload();
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}
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// load template file
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$l_obj_TemplateContainer = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "reference-container");
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$l_obj_TemplateContainer->replace(
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array(
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"label" => MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_NAME),
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"buttons" => MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_COLLAPSE)) ? ' [ <a id="footnote_reference_container_collapse_button" style="cursor:pointer;" onclick="footnote_expand_collapse_reference_container();">+</a> ]' : '',
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"id" => "footnote_references_container",
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"class" => MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_COLLAPSE)) ? 'footnote_hide_box' : '',
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"content" => $l_str_Body
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)
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);
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// free all found footnotes if reference container will be displayed
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self::$a_arr_Footnotes = array();
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return $l_obj_TemplateContainer->getContent();
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}
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}
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