zenphoto_demoplugin.php

<?php
/**
 * ------------------------------------------------------------------------------------------------
 * NOTE: This is a raw functional example of a basic Zenphoto theme plugin.
 * For functional examples take a look at the official plugins
 * This plugin uses examples for a plugin based translation (gettext_pl).
 * ------------------------------------------------------------------------------------------------
 * You plugin should have in any case a comment block like this (phpdoc syntax), that explains what you plugin does and its usage.
 * Use Markdown syntax preferredly
 *
 * @author author_name
 * @package plugins 
 * 		(this should be kept)
 * @subpackage development
 * 		(Apples to official plugins primarily: This should be the name of the plugin so the documentation generator can group procedural functions belong to this plugin. 
 * 		 Note: Replace underscores with dashes as it otherwise will not work)
 */

/*
 * Flags this plugin as a filter type plugin and sets it load priority.
 * The filters will be loaded in decending priority order. Normal front-end plugins should
 * set this variable to 1. They will be loaded by index.php after the front-end environment has
 * been established. Values greater than 1 will cause the plugin to load with the class libraries.
 * These will be available to the admin scipts as well as to the front-end, but will load before
 * the front-end environment is established. Values less than zero will load normally on the
 * front-end but will also be available to the admin scripts.[1.2.6] The absolute value of value
 * will be used for the load prioirity.[1.2.7] [1.4] There are three defines used in conjunction
 * with this variable which control when in the script load process the plugin will be loaded.
 *
 * They are:
 * 	- CLASS_PLUGIN->the plugin is loaded with the Zenphoto "classes" (album, image, etc.);
 * 	- ADMIN_PLUGIN->the plugin is loaded with the "classes", but only on the back-end;
 * 	- FEATURE_PLUGIN->the plugin is loaded om the front end before the theme context has been established.
 * 	- THEME_PLUGIN->the plugin is loaded once the theme context has been established.
 * 
 * NOTE: you "or" these to the base priority. It is permissable to "or" ADMIN_PLUGIN with THEME_PLUGIN to
 * get a plugin that operates in both environments. CLASS_PLUGIN stands alone as these plugins will always be loaded.
 * NOTE: These variables are parsed from the file since they are used even if the plugin is not activated (=loaded). So you need to remove those you don't want to use, e.g. simply commenting out the $option_interface line will not do it if your plugin has no options. It would still be listed as plugin having options.
 */
$plugin_is_filter = 5 | THEME_PLUGIN;

/*
 * Should be set to the text you wish displayed on the admin plugins tab description of the plugin.
 */
$plugin_description = gettext_pl('This is a raw functional example of a basic Zenphoto theme plugin', 'zenphoto_demoplugin');

/*
 * OPTIONAL: The author of the plugin. This is also displayed on the plugins tab.
 */
$plugin_author = 'Author';

/*
 * OPTIONAL: Version of the plugin. Official plugins always have the version of the Zenphoto release automatically.
 */
$plugin_version = '1.0';

/*
 * OPTIONAL: The release date of the current plugin version (since 1.5.8)
 */
$plugin_date = '2020-07-03';

/*
 * OPTIONAL: URL to the usage documentation for the plugin. For plugins distributed with Zenphoto this is an URL
 * to the PHP documentation page of the plugin on zenphoto.org. (since 1.5.8)
 */
$plugin_siteurl = '';

/*
 * OPTIONAL: Use ternary operators to add dependency or requirements checks. If they match and this is not false, 
 * the plugin will be disabled/cannot be disabled and the message is displayed on the backend. The variable should not be present
 * or be set to empty the plugin may be enabled.
 * You can also provide an array with serveral conditions (since 1.5.8)
 */
$plugin_disable = ($something != $somecondition) ? gettext('Message about the failed check') : false;;

/*
 * This controls the category tab the plugin is listed on the Zenphoto backend. The term should be used with gettext:
 * `$plugin_category = gettext('Media')`;
 * Try to place your plugin within one of these general categories as the term is translated via the general
 * Zenphoto translation file:
 * 
 * 	- gettext('Admin')
 * 	- gettext('Demo')
 * 	- gettext('Development')
 * 	- gettext('Feed')
 * 	- gettext('Mail')
 * 	- gettext('Media')
 * 	- gettext('Misc') // is is also the default category assigned if none is defined
 * 	- gettext('Spam')
 * 	- gettext('Statistics')
 * 	- gettext('SEO')
 * 	- gettext('Uploader')
 * 	- gettext('Users')
 * 
 * Otherwise a new tab will be introduced.
 */
$plugin_category = '';

/*
 * OPTIONAL: Add a short deprecation message if needed. Meant for just one sentence as it is printed as a paragraph on the backend.
 * From ZenphotoCMS 1.6 on you can leave it empty or set it to true to get a default message. Don't set this at all if it is not deprecated.
 */
$plugin_deprecated = gettext('Some message'); 

/*
 * OPTIONAL: A short notice about e.g. specific settings that need to be made or similar. Also note here if your theme uses external sources 
 */
$plugin_notice = gettext('A short notice.');

/*
 * OPTIONAL: If your plugin supports options, this variable should set to the option handler for the plugin.
 * Note: as from Zenphoto 1.4 the "name" of the class should be stored rather than an instantiation
 * of it. This is to eliminate unneeded class instantiations in the main-line of Zenphoto. We have
 * determined these are costly for performance.
 */
$option_interface = 'demopluginOptions';

/*
 * If your plugin requires something to be loaded, e.g. functions from its own plugin subfolder do this here.
 *  The path resolves to <yourdomain>.com/plugins/<folder belonging to your plugin>/file.php.
 * Note: Official plugins use the constant PLUGIN_FOLDER while 3rd party plugins residing in /plugins
 *  must to use the constant USER_PLUGIN_FOLDER. 
 */
require_once(SERVERPATH . '/' . USER_PLUGIN_FOLDER . '/zenphoto_demoplugin/file.php');

/*
 * if you need to set any filters do this here. Here an example to add a specific javascript file to the theme head.
 * yourplugin_javascript is the name of the function to attach to the filter. See the plugin tutorial for details
 * on all available filters as some require special setup. 
 */
zp_register_filter('theme_head', 'demoplugin::javascript');
/*
 * the following filter calls a function in a file that was included by the above require_once statement.
 */
zp_register_filter('theme_body_open', 'included');

/*
 * This is defined on the $option_interface setting above. 
 */
class demopluginOptions {

	/**
	 * class instantiation function
	 *
	 * @return admin_login
	 */
	function __construct() {
		// set all option default values like this
		setOptionDefault('demoplugin_radiobuttons', 'suboption3');
		setOptionDefault('demoplugin_checkbox', 1); // use 0/1 or false/true for checkbox options.
		setOptionDefault('demoplugin_customoption', 'default text');
	}

	/**
	 * Reports the supported options
	 *
	 * @return array
	 */
	function getOptionsSupported() {
		/*
		 * The option definitions are stored in a multidimensional array. There are several predefined option types.
		 * Option types are the same for plugins and themes.
		 */
		$options = array(
				/* 
				 * Radio buttons
				 */
				gettext_pl('Radio buttons option', 'zenphoto_demoplugin') => array(// The Title of your option that can be translated.
						'key' => 'demoplugin_radiobuttons', // The real name of the option that is stored in the database.
						// Good practice is to name these like yourdemoplugin_optionname.
						'type' => OPTION_TYPE_RADIO, // This is generates an option interface for radio buttons.
						'order' => 7, // The order position the option should have on the plugin option.
						'buttons' => array(// The definition of as many radio buttons you need to choose from and their values. 
								gettext_pl('Suboption 1-a', 'zenphoto_demoplugin') => 'value-to-store',
								gettext_pl('Suboption 1-b', 'zenphoto_demoplugin') => 'value-to-store',
								gettext_pl('Suboption 1-c', 'zenphoto_demoplugin') => 'value-to-store'
						),
						'desc' => gettext_pl('Description', 'zenphoto_demoplugin')
				), // The description of the option

				/*
				 * Checkbox list as an array
				 * 
				 * Note that the checkboxes are individual boolean options themselves that only store 0 and 1.
				 * Therefore it is recommend to name the options accordingly. 
				 * 
				 * In code you don't check the main option (key) but these individual options themselves.
				 */
				gettext_pl('Checkbox array list option', 'zenphoto_demoplugin') => array(
						'key' => 'demoplugin_checkbox_array',
						'type' => OPTION_TYPE_CHECKBOX_ARRAY,
						'order' => 0,
						'checkboxes' => array( //The definition of the checkboxes which are actually individual boolean suboptions. 
								gettext_pl('Suboption 2-a', 'zenphoto_demoplugin') => 'demoplugin_checkbox_array-suboption2-a', // this is the option db name, not the value!
								gettext_pl('Suboption 2-b', 'zenphoto_demoplugin') => 'demoplugin_checkbox_array-suboption2-b',
								gettext_pl('Suboption 2-c', 'zenphoto_demoplugin') => 'demoplugin_checkbox_array-suboption2-c'
						),
						'desc' => gettext_pl('Description', 'zenphoto_demoplugin')),
				/* 
				 * Checkbox list as an unordered html list
				 * 
				 * Note that the checkboxes are individual boolean options themselves that only store 0 and 1.
				 * Therefore it is recommend to name the options accordingly. 
				 * 
				 * In code you don't check the main option (key) but these individual options themselves.
				 */
				gettext_pl('Checkbox list', 'zenphoto_demoplugin') => array(
						'key' => 'demoplugin_checkbox_list',
						'type' => OPTION_TYPE_CHECKBOX_UL,
						'order' => 0,
						'checkboxes' => array(// The definition of the checkboxes which are actually individual boolean suboptions 
								gettext_pl('Suboption 3-a', 'zenphoto_demoplugin') => 'demoplugin_checkbox_list-suboption3-a', // this is the option db name, not the value!
								gettext_pl('Suboption 3-b', 'zenphoto_demoplugin') => 'demoplugin_checkbox_list-suboption3-b',
								gettext_pl('Suboption 3-c', 'zenphoto_demoplugin') => 'demoplugin_checkbox_list-suboption3-c'
						),
						'desc' => gettext_pl('Description', 'zenphoto_demoplugin')),
				/* 
				 * One checkbox only option 
				 */
				gettext_pl('One Checkbox option only', 'zenphoto_demoplugin') => array(
						'key' => 'demoplugin_checkbox',
						'type' => OPTION_TYPE_CHECKBOX,
						'order' => 2,
						'desc' => gettext_pl('Description', 'zenphoto_demoplugin')),
				/* 
				 * Input text field option 
				 */
				gettext_pl('Input text field option', 'zenphoto_demoplugin') => array(
						'key' => 'demoplugin_textbox',
						'type' => OPTION_TYPE_TEXTBOX,
						'multilingual' => 1, // Optional: if the field should be multilingual if Zenphoto is run
						//in that mode. Then there will be one textarea per enabled language.
						'order' => 9,
						'desc' => gettext_pl('Description', 'zenphoto_demoplugin')),
				/* 
				 * Password input field option 
				 */
				gettext_pl('Password input field option', 'zenphoto_demoplugin') => array(
						'key' => 'demoplugin_input_password',
						'type' => OPTION_TYPE_PASSWORD,
						'order' => 9,
						'desc' => gettext_pl('Description', 'zenphoto_demoplugin')),
				/* 
				 * Cleartext option 
				 */
				gettext_pl('Cleartext input field option', 'zenphoto_demoplugin') => array(
						'key' => 'demoplugin_input_cleartext',
						'type' => OPTION_TYPE_CLEARTEXT,
						'order' => 9,
						'desc' => gettext_pl('Description', 'zenphoto_demoplugin')),
				/* 
				 * Textareafield option 
				 */
				gettext_pl('Textarea field option', 'zenphoto_demoplugin') => array(
						'key' => 'demoplugin_textarea',
						'type' => OPTION_TYPE_TEXTAREA,
						'texteditor' => 1, // Optional: to enable the visual editor TinyMCE on this field.
						'multilingual' => 1, // Optional: if the field should be multilingual if Zenphoto is run
						//in that mode. Then there will be one textarea per enabled language.
						'order' => 9,
						'desc' => gettext_pl('Description', 'zenphoto_demoplugin')),
				/* 
				 * Dropdown selector option 
				 */
				gettext_pl('Dropdown selector option', 'zenphoto_demoplugin') => array(
						'key' => 'demoplugin_selector',
						'type' => OPTION_TYPE_SELECTOR,
						'order' => 1,
						'selections' => array(// The definition of the selector values. You can of course have more than three.
								gettext_pl('Suboption1', 'zenphoto_demoplugin') => 'value-to-store',
								gettext_pl('Suboption2', 'zenphoto_demoplugin') => 'value-to-store',
								gettext_pl('Suboption3', 'zenphoto_demoplugin') => 'value-to-store'
						),
						'null_selection' => gettext_pl('Disabled', 'zenphoto_demoplugin'), // Provides a NULL value to select to the above selections
						'desc' => gettext_pl('Description.', 'zenphoto_demoplugin')),
				/* 
				 * jQuery color picker option 
				 */
				gettext_pl('jQuery color picker option', 'zenphoto_demoplugin') => array(
						'key' => 'demoplugin_colorpicker',
						'type' => OPTION_TYPE_COLOR_PICKER,
						'desc' => gettext_pl('Description', 'zenphoto_demoplugin')),
				/* 
				 * Custom option if none of the above standard ones fit your purpose. 
				 * You define what to do within the method handleOption() below.
				 */
				gettext_pl('Custom option', 'zenphoto_demoplugin') => array(
						'key' => 'demoplugin_customoption', // note that this name is referenced in handleOption() below!
						'type' => OPTION_TYPE_CUSTOM,
						'desc' => gettext_pl('Custom option if none of the above standard ones fit your purpose. You define what to do and show within the method handleOption(). In this case we mask the input which in actuality is shown in the field below.', 'zenphoto_demoplugin'), getOption('demoplugin_customoption'))
		);

		/*
		 * Sometimes you might want to put out notes for example if someone tries to run the plugin but its server lacks support.
		 * Then there is an option type for notes only. You can add them like this: 
		 */
		if (!extensionEnabled('zenphoto_demoplugin')) { // whatever you need to check (in this case that the plugin is enabled)
			$options['note'] = array(
					'key' => 'demoplugin_note',
					'type' => OPTION_TYPE_NOTE,
					'order' => 25,
					'desc' => gettext_pl('<p class="notebox">Sometimes you might want to put out notes for example if someone tries to run the plugin but its server lacks support.
																Then there is an option type for notes only</p>', 'zenphoto_demoplugin') // the class 'notebox' is a standard class for styling notes on the backend, there is also 'errorbox' for errors. Of cours
			);
		}
		return $options;
	}
	
	/**
	 * Handles optional custom option types
	 * 
	 * @param string $option
	 * @param mixed $currentValue
	 */
	function handleOption($option, $currentValue) {
		/* Example to setup and call a custom option. In this case just a custom input field.
		 * Generally you can do anything you want with custom options.
		 *
		 * Here we have made a crude keystroke hider--the keys entered into the input field are recorded in a
		 * disabled (could have been hidden) input field and replaced in the "displayed" input field by asterisks.
		 */
		if ($option == 'demoplugin_customoption') {
			?>
			<p>This is a custom option printing a custom "protected" input field. Custom option can be used if none of the above standard ones fit your purpose.</p>
			<input type="text" id="zenphoto_demoplugin_mask_input_show" size="40"  style="width: 338px" value="<?php echo html_encode($currentValue); ?>" />
			<input type="text" id="zenphoto_demoplugin_mask_input" size="40" name="demoplugin_customoption" value="<?php echo html_encode($currentValue); ?>" disabled="disabled" />
			<script type="text/javascript">
			<!--
				function zenphoto_demoplugin_mask_input() {
					var text_input = $('#zenphoto_demoplugin_mask_input_show').val();
					var text_actual = $('#zenphoto_demoplugin_mask_input').val();
					var text_save = '';
					var text_show = '';
					var l_actual = text_actual.length;
					var l_input = text_input.length;
					var c;
					for (i = 0; i < l_input; i++) {
						c = text_input.substr(i, 1);
						if (c == '*') {
							text_save = text_save + text_actual.substr(i, 1);
						} else {
							text_save = text_save + c;
						}
						text_show = text_show + '*';
					}
					$('#zenphoto_demoplugin_mask_input').val(text_save);
					$('#zenphoto_demoplugin_mask_input_show').val(text_show);
				}

			// monitor the input field for changes
				$('#zenphoto_demoplugin_mask_input_show').bind('input', function () {
					zenphoto_demoplugin_mask_input();
				});

				$('#zenphoto_demoplugin_mask_input').val($('#zenphoto_demoplugin_mask_input_show').val())
				$('#zenphoto_demoplugin_mask_input_show').val('');	//	start with a clean slate.

			//-->
			</script>
			<?php
		}

		/**
		 * handleOptionSave() will be called if it has been defined. Its job is to process the
		 * posting of cusotm options.
		 * @param string $themename
		 * @param string $themealbum
		 */
		function handleOptionSave($themename, $themealbum) {
			if (isset($_POST['demoplugin_customoption'])) {
				setOption('demoplugin_customoption', sanitize($_POST['demoplugin_customoption']));
			}
			return false;
		}

	}

	/*
	 * You can put your extra methods here as part of this class or use additional code defined separately
	 */
}

/**
 * Place here any additional functionality your plugin provides. We recommend to use a (static) class instead of prefixing procedural function names
 * so you plugin functionality is clearly recognizable within themes or orther plugins
 */
class demoplugin {

	/**
	 * Here your plugin functions or extra classes can go. If your plugin is more complex a class or the incorporation into the above one can be good practice 
	 * We use a function here as an example for loading javascript on the theme using a filter (see above) 
	 */
	static function javascript() {
		?>
		<script type="text/javascript" src="<?php echo WEBPATH . '/' . USER_PLUGIN_FOLDER . '/' . stripSuffix(basename(__FILE__)); ?>/javascript.js"></script>
		<?php
	}

	/**
	 * It is also good pratice to prefix or suffix function names according to the plugin so you easily spot them if used on a theme 
	 */
	static function printHelloworld() {
		echo gettext_pl('Hello World!');
	}

}