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footnotes/classes/footnotes_settings.php

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<?php
/**
* Created by Stefan Herndler.
* User: Stefan
* Date: 15.05.14
* Time: 16:21
* Version: 1.0-beta
* Since: 1.0
*/
/**
* Class Class_FootnotesSettings
* @since 1.0
*/
class Class_FootnotesSettings
{
/*
* attribute for default settings value
* @since 1.0
*/
public static $a_arr_Default_Settings = array(
FOOTNOTE_INPUTFIELD_COMBINE_IDENTICAL => 'yes',
FOOTNOTE_INPUTFIELD_REFERENCES_LABEL => 'References',
FOOTNOTE_INPUTFIELD_COLLAPSE_REFERENCES => ''
);
/*
* resulting pagehook for adding a new sub menu page to the settings
* @since 1.0
*/
var $a_str_Pagehook;
/*
* collection of settings values for this plugin
* @since 1.0
*/
var $a_arr_Options;
/*
* collection of tabs for the settings page of this plugin
* @since 1.0
*/
private $a_arr_SettingsTabs = array();
/**
* @constructor
* @since 1.0
*/
function __construct()
{
/* validates the settings of the plugin and replaces them with the default settings if invalid */
add_option( FOOTNOTE_SETTINGS_CONTAINER, self::$a_arr_Default_Settings );
/* loads and filters the settings for this plugin */
$this->a_arr_Options = footnotes_filter_options( FOOTNOTE_SETTINGS_CONTAINER );
/* execute class includes on action-even: init, admin_init and admin_menu */
add_action( 'init', array( $this, 'LoadScriptsAndStylesheets' ) );
add_action( 'admin_init', array( $this, 'RegisterSettings' ) );
add_action( 'admin_init', array( $this, 'RegisterTab_General' ) );
add_action( 'admin_init', array( $this, 'RegisterTab_HowTo' ) );
add_action( 'admin_menu', array( $this, 'AddSettingsMenuPanel' ) );
}
/**
* initialize settings page, loads scripts and stylesheets needed for the layout
* called in class constructor @ init
* @since 1.0
*/
function LoadScriptsAndStylesheets()
{
/* add the jQuery plugin (already registered by WP) */
wp_enqueue_script( 'jquery' );
/* register public stylesheet */
wp_register_style( 'footnote_public_style', plugins_url( '../css/footnote.css', __FILE__ ) );
/* add public stylesheet */
wp_enqueue_style( 'footnote_public_style' );
/* register settings stylesheet */
wp_register_style( 'footnote_settings_style', plugins_url( '../css/settings.css', __FILE__ ) );
/* add settings stylesheet */
wp_enqueue_style( 'footnote_settings_style' );
}
/**
* register the settings field in the database for the "save" function
* called in class constructor @ admin_init
* @since 1.0
*/
function RegisterSettings()
{
register_setting( FOOTNOTE_SETTINGS_LABEL_GENERAL, FOOTNOTE_SETTINGS_CONTAINER );
}
/**
* sets the plugin's title for the admins settings menu
* called in class constructor @ admin_menu
* @since 1.0
*/
function AddSettingsMenuPanel()
{
/* current user needs the permission to update plugins for further access */
if ( !current_user_can( 'update_plugins' ) ) {
return;
}
/* submenu page title */
$l_str_PageTitle = 'footnotes';
/* submenu title */
$l_str_MenuTitle = 'footnotes';
/* Add a new submenu to the standard Settings panel */
$this->a_str_Pagehook = add_options_page( $l_str_PageTitle, $l_str_MenuTitle, 'administrator', FOOTNOTES_SETTINGS_PAGE_ID, array( $this, 'OutputSettingsPage' ) );
}
/**
* Plugin Options page rendering goes here, checks
* for active tab and replaces key with the related
* settings key. Uses the plugin_options_tabs method
* to render the tabs.
* @since 1.0
*/
function OutputSettingsPage()
{
/* gets active tag, or if nothing set the "general" tab will be set to active */
$l_str_tab = isset( $_GET[ 'tab' ] ) ? $_GET[ 'tab' ] : FOOTNOTE_SETTINGS_LABEL_GENERAL;
/* outputs all tabs */
echo '<div class="wrap">';
$this->OutputSettingsPageTabs();
/* outputs a form with the content of the current active tab */
echo '<form method="post" action="options.php">';
wp_nonce_field( 'update-options' );
settings_fields( $l_str_tab );
/* outputs the settings field of the current active tab */
do_settings_sections( $l_str_tab );
/* adds a submit button to the current page */
submit_button();
echo '</form>';
echo '</div>';
}
/**
* Renders our tabs in the plugin options page,
* walks through the object's tabs array and prints
* them one by one. Provides the heading for the
* plugin_options_page method.
* @since 1.0
*/
function OutputSettingsPageTabs()
{
/* gets active tag, or if nothing set the "general" tab will be set to active */
$l_str_CurrentTab = isset( $_GET[ 'tab' ] ) ? $_GET[ 'tab' ] : FOOTNOTE_SETTINGS_LABEL_GENERAL;
screen_icon();
echo '<h2 class="nav-tab-wrapper">';
foreach ( $this->a_arr_SettingsTabs as $l_str_TabKey => $l_str_TabCaption ) {
$active = $l_str_CurrentTab == $l_str_TabKey ? 'nav-tab-active' : '';
echo '<a class="nav-tab ' . $active . '" href="?page=' . FOOTNOTES_SETTINGS_PAGE_ID . '&tab=' . $l_str_TabKey . '">' . $l_str_TabCaption . '</a>';
}
echo '</h2>';
}
/**
* loads specific setting and returns an array with the keys [id, name, value]
* @since 1.0
* @param $p_str_FieldID
* @return array
*/
protected function LoadSetting( $p_str_FieldID )
{
$p_arr_Return = array();
$p_arr_Return[ "id" ] = $this->getFieldID( $p_str_FieldID );
$p_arr_Return[ "name" ] = $this->getFieldName( $p_str_FieldID );
$p_arr_Return[ "value" ] = esc_attr( $this->getFieldValue( $p_str_FieldID ) );
return $p_arr_Return;
}
/**
* access settings field by name
* @since 1.0
* @param string $p_str_FieldName
* @return string
*/
protected function getFieldName( $p_str_FieldName )
{
return sprintf( '%s[%s]', FOOTNOTE_SETTINGS_CONTAINER, $p_str_FieldName );
//return sprintf( '%s', $p_str_FieldName );
}
/**
* access settings field by id
* @since 1.0
* @param string $p_str_FieldID
* @return string
*/
protected function getFieldID( $p_str_FieldID )
{
return sprintf( '%s[%s]', FOOTNOTE_SETTINGS_CONTAINER, $p_str_FieldID );
//return sprintf( '%s', $p_str_FieldID );
}
/**
* get settings field value
* @since 1.0
* @param string $p_str_Key
* @return string
*/
protected function getFieldValue( $p_str_Key )
{
return $this->a_arr_Options[ $p_str_Key ];
}
/**
* outputs a input type=text
* @param string $p_str_SettingsID [id of the settings field]
* @param string $p_str_ClassName [css class name]
* @since 1.0-beta
*/
function AddTextbox($p_str_SettingsID, $p_str_ClassName="")
{
/* collect data for given settings field */
$l_arr_Data = $this->LoadSetting( $p_str_SettingsID );
/* if input shall have a css class, add the style tag for it */
if (!empty($p_str_ClassName)) {
$p_str_ClassName = 'class="' . $p_str_ClassName . '"';
}
/* outputs an input field type TEXT */
echo '<input type="text" '.$p_str_ClassName.' name="'.$l_arr_Data[ "name" ].'" id="'.$l_arr_Data[ "id" ].'" value="'.$l_arr_Data[ "value" ].'"/>';
}
/**
* outputs a input type=checkbox
* @param string $p_str_SettingsID [id of the settings field]
* @param string $p_str_ClassName [optional css class name]
* @since 1.0-beta
*/
function AddCheckbox($p_str_SettingsID, $p_str_ClassName="")
{
/* collect data for given settings field */
$l_arr_Data = $this->LoadSetting( $p_str_SettingsID );
/* if input shall have a css class, add the style tag for it */
if (!empty($p_str_ClassName)) {
$p_str_ClassName = 'class="' . $p_str_ClassName . '"';
}
/* lookup if the checkbox shall be pre-checked */
$l_str_Checked = "";
if (footnotes_ConvertToBool($l_arr_Data["value"])) {
$l_str_Checked = 'checked="checked"';
}
/* outputs an input field type CHECKBOX */
echo sprintf('<input type="checkbox" '.$p_str_ClassName.' name="'.$l_arr_Data[ "name" ].'" id="'.$l_arr_Data[ "id" ].'" %s/>', $l_str_Checked);
}
/**
* outputs a select box
* @param string $p_str_SettingsID [id of the settings field]
* @param array $p_arr_Options [array with options]
* @param string $p_str_ClassName [optional css class name]
* @since 1.0-beta
*/
function AddSelectbox($p_str_SettingsID, $p_arr_Options, $p_str_ClassName="")
{
/* collect data for given settings field */
$l_arr_Data = $this->LoadSetting( $p_str_SettingsID );
/* if input shall have a css class, add the style tag for it */
if (!empty($p_str_ClassName)) {
$p_str_ClassName = 'class="' . $p_str_ClassName . '"';
}
/* select starting tag */
$l_str_Output = '<select ' . $p_str_ClassName . ' name="'.$l_arr_Data[ "name" ].'" id="'.$l_arr_Data[ "id" ].'">';
/* loop through all array keys */
foreach($p_arr_Options as $l_str_Value => $l_str_Caption) {
/* add key as option value */
$l_str_Output .= '<option value="'.$l_str_Value.'"';
/* check if option value is set and has to be pre-selected */
if ($l_arr_Data["value"] == $l_str_Value) {
$l_str_Output .= ' selected';
}
/* write option caption and close option tag */
$l_str_Output .= '>' . $l_str_Caption . '</option>';
}
/* close select */
$l_str_Output .= '</select>';
/* outputs the SELECT field */
echo $l_str_Output;
}
/**
* initialize general settings tab
* called in class constructor @ admin_init
* @since 1.0
*/
function RegisterTab_General()
{
$l_str_SectionName = "Footnote_Secion_Settings_General";
/* add tab to the tab array */
$this->a_arr_SettingsTabs[ FOOTNOTE_SETTINGS_LABEL_GENERAL ] = __( "General", FOOTNOTES_PLUGIN_NAME );
/* register settings tab */
add_settings_section( $l_str_SectionName, __( "Settings", FOOTNOTES_PLUGIN_NAME ), array( $this, 'RegisterTab_General_Description' ), FOOTNOTE_SETTINGS_LABEL_GENERAL );
add_settings_field( 'Register_References_Label', __( "References label:", FOOTNOTES_PLUGIN_NAME ), array( $this, 'Register_References_Label' ), FOOTNOTE_SETTINGS_LABEL_GENERAL, $l_str_SectionName );
add_settings_field( 'Register_Collapse_References', __( "Collapse references by default:", FOOTNOTES_PLUGIN_NAME ), array( $this, 'Register_Collapse_References' ), FOOTNOTE_SETTINGS_LABEL_GENERAL, $l_str_SectionName );
add_settings_field( 'Register_Combine_Identical', __( "Combine identical footnotes:", FOOTNOTES_PLUGIN_NAME ), array( $this, 'Register_Combine_Identical' ), FOOTNOTE_SETTINGS_LABEL_GENERAL, $l_str_SectionName );
}
/**
* adds a desciption to the general settings tab
* called in RegisterTab_General
* @since 1.0
*/
function RegisterTab_General_Description()
{
// unused description
}
/**
* outputs the settings field for the "references label"
* @since 1.0
*/
function Register_References_Label()
{
/* add a textbox to the output */
$this->AddTextbox(FOOTNOTE_INPUTFIELD_REFERENCES_LABEL, "footnote_plugin_50");
}
/**
* outputs the settings field for the "references label"
* @since 1.0-beta
*/
function Register_Collapse_References()
{
/* add a checkbox to the output */
$this->AddCheckbox(FOOTNOTE_INPUTFIELD_COLLAPSE_REFERENCES);
}
/**
* outputs the settings field for the "combine identical footnotes"
* @since 1.0
*/
function Register_Combine_Identical()
{
/* get array with option elements */
$l_arr_Options = array(
"yes" => __( "Yes", FOOTNOTES_PLUGIN_NAME ),
"no" => __( "No", FOOTNOTES_PLUGIN_NAME )
);
/* add a select box to the output */
$this->AddSelectbox(FOOTNOTE_INPUTFIELD_COMBINE_IDENTICAL, $l_arr_Options, "footnote_plugin_25");
}
/**
* initialize howto settings tab
* called in class constructor @ admin_init
* @since 1.0
*/
function RegisterTab_HowTo()
{
$l_str_SectionName = "Footnote_Secion_Settings_Howto";
/* add tab to the tab array */
$this->a_arr_SettingsTabs[ FOOTNOTE_SETTINGS_LABEL_HOWTO ] = __( "HowTo", FOOTNOTES_PLUGIN_NAME );
/* register settings tab */
add_settings_section( $l_str_SectionName, __( "HowTo", FOOTNOTES_PLUGIN_NAME ), array( $this, 'RegisterTab_HowTo_Description' ), FOOTNOTE_SETTINGS_LABEL_HOWTO );
add_settings_field( 'Register_Howto_Box', "", array( $this, 'Register_Howto_Box' ), FOOTNOTE_SETTINGS_LABEL_HOWTO, $l_str_SectionName );
}
/**
* adds a descrption to the HowTo settings tab
* called int RegisterTab_HowTo
* @since 1.0
*/
function RegisterTab_HowTo_Description()
{
echo __( "This is a brief introduction in how to use the plugin.", FOOTNOTES_PLUGIN_NAME );
}
/**
* outputs the content of the HowTo settings tab
* @since 1.0
*/
function Register_Howto_Box()
{
?>
<div style="text-align:center;">
<div class="footnote_placeholder_box_container">
<p>
<?php echo __( "Start your footnote with the following shortcode:", FOOTNOTES_PLUGIN_NAME ); ?>
<span class="footnote_highlight_placeholder"><?php echo FOOTNOTE_PLACEHOLDER_START; ?></span>
</p>
<p>
<?php echo __( "...and end your footnote with this shortcode:", FOOTNOTES_PLUGIN_NAME ); ?>
<span class="footnote_highlight_placeholder"><?php echo FOOTNOTE_PLACEHOLDER_END; ?></span>
</p>
<div class="footnote_placeholder_box_example">
<p>
<span class="footnote_highlight_placeholder"><?php echo FOOTNOTE_PLACEHOLDER_START . __( "example string", FOOTNOTES_PLUGIN_NAME ) . FOOTNOTE_PLACEHOLDER_END; ?></span>
<?php echo __( "will be displayed as:", FOOTNOTES_PLUGIN_NAME ); ?>
&nbsp;&nbsp;&nbsp;&nbsp;
<?php echo footnotes_replaceFootnotes( FOOTNOTE_PLACEHOLDER_START . __( "example string", FOOTNOTES_PLUGIN_NAME ) . FOOTNOTE_PLACEHOLDER_END, true ); ?>
</p>
</div>
<p>
<?php echo sprintf( __( "If you have any questions, please don't hesitate to %smail us%s.", FOOTNOTES_PLUGIN_NAME ), '<a href="mailto:support@herndler.org" class="footnote_plugin">', '</a>' ); ?>
</p>
</div>
</div>
<?php
}
} /* Class Class_FootnotesSettings */