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<?php
$args = array(
    'display_function' => 'ninja_forms_screen_option_tabs',
    'save_function' => 'ninja_forms_save_screen_option_tabs',
    'page' => 'ninja-forms'
);
//ninja_forms_register_screen_option('tabs', $args);

function ninja_forms_screen_option_tabs(){
    global $ninja_forms_tabs, $ninja_forms_sidebars;
    $current_tab = ninja_forms_get_current_tab();
    $current_page = $_REQUEST['page'];
    $opt = nf_get_settings();
    if(isset($ninja_forms_tabs[$current_page]) AND is_array($ninja_forms_tabs[$current_page])){
        ?>
        <div class="tabs-prefs">
            <h5>Show These Tabs</h5>
            <?php
            foreach($ninja_forms_tabs[$current_page] as $slug => $tab){
                if(!isset($opt['screen_options']['tab'][$slug]['visible']) OR $opt['screen_options']['tab'][$slug]['visible'] == 1){
                    $checked = 'checked = "checked"';
                }else{
                    $checked = '';
                }
            ?>
            <input type="hidden" name="ninja-forms-tab[<?php echo $slug;?>]" value="0">
            <label for="ninja-forms-tab-<?php echo $slug;?>"><input class="hide-tab-tog" name="ninja-forms-tab[<?php echo $slug;?>]" type="checkbox" id="ninja-forms-tab-<?php echo $slug;?>" value="1" <?php echo $checked;?> ><?php echo $tab['name'];?></label>
            <?php
            }
            ?>
            <br class="clear">
        </div>
        <?php if(isset($ninja_forms_sidebars[$current_page][$current_tab]) AND is_array($ninja_forms_sidebars[$current_page][$current_tab])){?>
            <div class="sidebar-prefs">
                <h5>Show These Sidebars</h5>
                <?php
                foreach($ninja_forms_sidebars[$current_page][$current_tab] as $slug => $sidebar){
                    if(!isset($opt['screen_options']['tab'][$current_tab]['sidebars'][$slug]['visible']) OR $opt['screen_options']['tab'][$current_tab]['sidebars'][$slug]['visible'] == 1){
                        $checked = 'checked = "checked"';
                    }else{
                        $checked = '';
                    }
                ?>
                <input type="hidden" name="ninja-forms-sidebar[<?php echo $slug;?>]" value="0">
                <label for="ninja-forms-sidebar-<?php echo $slug;?>"><input class="hide-sidebar-tog" name="ninja-forms-sidebar[<?php echo $slug;?>]" type="checkbox" id="ninja-forms-sidebar-<?php echo $slug;?>" value="1" <?php echo $checked;?> ><?php echo $sidebar['name'];?></label>
                <?php
                }
                ?>
                <br class="clear">
            </div>
        <?php
        }
    }
}

function ninja_forms_save_screen_option_tabs(){
    $current_tab = ninja_forms_get_current_tab();
    $current_page = $_REQUEST['page'];
    $opt = nf_get_settings();
    if(is_array($_POST['ninja-forms-tab'])){
        foreach($_POST['ninja-forms-tab'] as $slug => $val){
            $opt['screen_options']['tab'][$slug]['visible'] = $val;
        }
    }
    if(is_array($_POST['ninja-forms-sidebar'])){
        foreach($_POST['ninja-forms-sidebar'] as $slug => $val){
            $opt['screen_options']['tab'][$current_tab]['sidebars'][$slug]['visible'] = $val;
        }
    }
    update_option('ninja_forms_settings', $opt);
}