Private Google Calendars Plugin

If you update to version 20230111, please note that:

• The theming has slightly been changed. Now there is distinction between bundled and custom themes.
• The previously bundled dark and light themes have been renamed. So if you used these themes, you now have to manually update these themes to the new pgc-dark and pgc-light themes.
• The popup theme has been removed. This can now be set in your custom theme.

See for details about this release: https://blog.michielvaneerd.nl/wordpress-plugins/private-google-calendars/version-20230111-details/

This plugin can display multiple private and public Google calendars with a shortcode, Gutenberg block or as a widget.

See the webpage for more information.

Features

• Access to private (and public) calendars by using OAuth2 or an API key.
• Adjustable caching – this can greatly improve the performance.
• It uses the FullCalendar library to show the calendar and can be fully customized within the Gutenberg block, shorcode attributes and the widget settings.
• Calendar filtering.

1. Upload the plugin files to the /wp-content/plugins/private-google-calendars directory, or install the plugin through the WordPress plugins screen directly.
2. Activate the plugin through the ‘Plugins’ screen in WordPress
3. Use the Settings->Private Google Calendars screen to configure the plugin
4. See the Help tab in the settings screen for information about setting up the OAuth2 access and using the shortcode and/or widget.

1. 

   Dark themed calendar.

2. 

   Calendar with event detail popup.

3. 

   Blue themed calendar.

20240106

• Escape attributes during output.

20240104

• XSS vulnerability caused a bug, which is fixed in this release

20240103

• Fixed XSS Vulnerability

20231125

• Fullcalendar 6.1.9

20230902

• Fullcalendar 6.1.8

20230111

• FullCalendar 6
• Event popups now keyboard accessible (by using ‘focus’ trigger)
• Removed Tippy theme – this can now be set in a custom theme
• Moved custom themes dir to uploads dir so custom themes are preserved when updating this plugin

20220915

• Version constant in previous version (20220910) was not updated. This could cause some files not correctly updated from the cache. This is now fixed.

20220910

• Get more events by setting the PGC_EVENTS_MAX_RESULTS constant in wp-config.php
• Setting a default private event title

20220701

• Fix for depracation warning in PHP 8: required parameter cannot follow optional parameter in PHP 8.
• Update NPM packages.

20220603

• Loop through calendarList if there are more calendars
• You can set the maximum number of calendars in the PGC_CALENDARS_MAX_RESULTS constant (you can set this in the wp-config.php file). Max = 250.

20220318

• Fixed OAuth redirect takeover where we didn’t check for the state parameter which could interfere with other plugins

20220209

• Set default FullCalendar 5 config if using FC version 5

20220206

• Themes and overridable themes per calendar

20220205

• FullCalendar 5 support!
• Using eventColor overrules custom Google event colors

20211205

• Option to show and hide private events.

20211103

• Sorting bug fixed

20211102

• Fixed bug timezone offset

20211101

• Sort calendars in the filter alphabetically.
• Enqueue FullCalendar with a prefixed name to make sure the files are loaded.

20211030

• Renamed enqueue name for FullCalendar to prevent clashes with other themes or plugins that are loading different versions of fullcalendar.

20201204

• Conditionally load defines to prevent logs.
• Always show the “Remove plugin data” option, to prevent a lockin where you have no valid token anymore, but you can’t delete your plugin data.

20200902

• Fixed security bug where you could display unselected private calendars
• Now possible to use private and public calendars at the same time
• Changed logic of displaying all or none of private calendars: before this change no selection means ALL private calendars are displyed. Now you have to select the calendars you want to display.
  This change was necessary because it’s now possible to display private and public calendars at the same time.
• These changes should not impact your current pages as long as you don’t edit them. If you experience changed behaviour of existing pages, please make sure to clear all caches.
• Added new documentation at: https://michielvaneerd.github.io/privategooglecalendars/

20211205

• Option to hide or show private events.

20200810

• When accessing public calendars use OAUth client ID when API key is empty.

20200809

• Possible to set unchecked calendars for filter.

20200808

• Custom event colors are reflected.

20200717

• Possible to set firstDay / (shortcode = first_day) option to + or –
• Added PGC_EVENTS_DEFAULT_TITLE

20200711

• Fix for links open in separate tab. Now target=_blank is injected into the A tags instead of adding an event listener.

20200710

• Added data-calendarid attribute to each .fc-event so you can manipulate them.
• Links in the event popups now always open in separate tab.

20200623

• Set default of PGC_EVENTS_MAX_RESULTS to 250.
• Make PGC_EVENTS_MAX_RESULTS configurable in wp-config.php.

20200615

• Added ‘moment’ plugin so you can use date formatting strings.

20200515

• Filter top default if true.

20200514

• Place filter on top or bottom of calendar.

20200513

• Loading and error element can be translated.
• Better error message displayed.
• Filter fixed position. Fixes scroll to top wghen clicking filter checkbox.

20200512

• Updated all libraries like tippy, popper, fullCalendar and moment.

20200511

• Added timezone and ISO datetime string to Google call

20200510

• Removed “Z” from start and end (double)

20200509

• Added UTC “Z” to start and end time and make end time next day 23:59:59 so it gets all events.

20200508

• Fixed modal FullCalendar popup

20200502

• Added translation files.

20200501

• Prepare for translation.

20200209

• Small bug fix: check for empty string when expecting array in get_option() call.

20200117

• Use wp_remote_get and wp_remote_post instead of file_get_contents. Thanks to @maikewng for his help in understanding the problem.

20200116

• Bug fixed: when start and end time of event are the same, the event.end is null. Now I use the event.start in that case.

20200115

• Bug when submitting settings where file select input was not correctly checked, now this check is disabled because we can also have public calendars.
• Added a Plugin settings link to the plugin page.

20200114

• You can now specify title and color for public calendars.
• Bug in widget fixed: when no private calendar was selected in settings, all private calendars were displayed in the widget form.

20200113

• Adding referer to public calendar calls to handle restrictions on API key.

20200112

• Now also access to public calendars with an API key instead of more difficult to setup OAuth2
• Small layout changes

20200102

• Gutenberg block implemented (you can use this instead of the shortcode)

20191211

• Hidepassed and hidefuture accept number of days as well
• Loading spinner active after timeout, so it’s not visible immediately

20191210

• Moment timezone plugin – you can now set the timezone for each calendar; by default local times are displayed

20191209

• Show popup also for weeklist

20191205

• Popups can be dragged

20191204

• Bugfix

20191203

• Bugfix

20191202

• Added version query parameters to enqueued styles and scripts for caching purposes
• Make creator, location, attendees and attachments, calendarname available for events
• CSS classes added to popup to make override style possible

20191201

• Bug: cast attributes from shortcode to int or boolean
• Add CSS classes to time, title, description and link of event in popup
• Removed title attribute from event

20191133

• Now also possible to display public calendars like national holidays

20191132

• New option: eventlink
• Changed option: eventpopup
• Tippyjs theme change
• Font size changes

20191131

• You can now hide passed or future events

20191129

• Title and button text change

20191129

• No borders around events
• Remove small font size header and button text

20191128

• Timegrid week working
• Bug fixed: using same cache for multiple calendars with different calendar selections
• CSS overrides for WP
• Mobile responsive toolbar

20191125

• Tippy tooltips (https://atomiks.github.io/tippyjs/)
• WP CSS override for specific fullCalendar

20191124

• Now possible to specify specific calendars in the shortcode, so it’s now possible to show different calendars on different sections of your website.
• FullCalendar update to v4.

20190219

• Possible to override calendar color with fullCalendar eventColor or eventBackgroundColor properties

20181225

• Fullcalendar locales check

20181224

• Make working with PHP 5.4 as in requirements: Arrays are not allowed in class constants.
• Rewrite empty() calls on methods to make it work with PHP 5.4
• You can now sub-select calendars per widget, so you can add multiple calendars
  as a widget, where each widget displays a different calendar.

20181222

• Updated fullcalendar to 3.9.0
• Tested with WordPress 5.0.2
• Fixed path for fullcalendar.print.min.css
• Removed moment.js file, because we use the WordPress one

20171009

• First release