How to edit wordpress plugin .php file - php

Question

I installed the Front-End Publishing plugin on my website, and it displays this menu:
FEP menu
I want to remove the 'tags' and 'choose featured image' option from the menu.
Since I want users to upload media only for the post content, I would also like to prevent users from typing words in the content box.
This is the plugin's submission-form.php What code do I have to edit to achive this? (I tried to put all the code in code format but part of the code refused to be put in the code sample box)
<?php
$post = false;
$post_id = -1;
$featured_img_html = '';
if( isset($_GET['fep_id']) && isset($_GET['fep_action']) && $_GET['fep_action'] == 'edit' ){
$post_id = $_GET['fep_id'];
$p = get_post($post_id, 'ARRAY_A');
if($p['post_author'] != $current_user->ID) return 'You don\'t have permission to edit this post';
$category = get_the_category($post_id);
$tags = wp_get_post_tags( $post_id, array( 'fields' => 'names' ) );
$featured_img = get_post_thumbnail_id( $post_id );
$featured_img_html = (!empty($featured_img))?wp_get_attachment_image( $featured_img, array(200,200) ):'';
$post = array(
'title' => $p['post_title'],
'content' => $p['post_content'],
'about_the_author' => get_post_meta($post_id, 'about_the_author', true)
);
if(isset($category[0]) && is_array($category))
$post['category'] = $category[0]->cat_ID;
if(isset($tags) && is_array($tags))
$post['tags'] = implode(', ', $tags);
}
?>
This form needs JavaScript to function properly. Please turn on JavaScript and try again!
<div id="fep-new-post">
<div id="fep-message" class="warning"></div>
<form id="fep-submission-form">
<label for="fep-post-title">Title</label><br/>
<input type="text" name="post_title" id="fep-post-title" value="<?php echo ($post) ? $post['title']:''; ?>"><br/>
<label for="fep-post-content">Content</label><br/>
<?php
$enable_media = (isset($fep_roles['enable_media']) && $fep_roles['enable_media'])?current_user_can($fep_roles['enable_media']):1;
wp_editor( $post['content'], 'fep-post-content', $settings = array('textarea_name'=>'post_content', 'textarea_rows'=> 7, 'media_buttons'=>$enable_media) );
wp_nonce_field('fepnonce_action','fepnonce');
?>
<?php if(!$fep_misc['disable_author_bio']): ?>
<label for="fep-about">Author Bio</label><br/>
<textarea name="about_the_author" id="fep-about" rows="5"><?php echo ($post) ? $post['about_the_author']:''; ?></textarea><br/>
<?php else: ?>
<input type="hidden" name="about_the_author" id="fep-about" value="-1">
<?php endif; ?>
<label for="fep-category">Category</label><br/>
<?php wp_dropdown_categories(array('id'=>'fep-category', 'hide_empty' => 0, 'name' => 'post_category', 'orderby' => 'name', 'selected' => $post['category'], 'hierarchical' => true, 'show_option_none' => __('None'))); ?><br/>
<label for="fep-tags">Tags</label><br/>
<input type="text" name="post_tags" id="fep-tags" value="<?php echo ($post) ? $post['tags']:''; ?>"><br/>
<div id="fep-featured-image">
<div id="fep-featured-image-container"><?php echo $featured_img_html; ?></div>
<a id="fep-featured-image-link" href="#">Choose Featured Image</a>
<input type="hidden" id="fep-featured-image-id" value="<?php echo (!empty($featured_img))?$featured_img:'-1'; ?>"/>
</div>
<input type="hidden" name="post_id" id="fep-post-id" value="<?php echo $post_id ?>">
<button type="button" id="fep-submit-post" class="active-btn">Submit</button><img class="fep-loading-img" src="<?php echo plugins_url( 'static/img/ajax-loading.gif', dirname(__FILE__) ); ?>"/>
</form>

Answer 1

For Question # 1:
Add a class to these elements (I have called the class removal)
<label for="fep-tags" class="removal">Tags</label><br/>
<input type="text" name="post_tags" class="removal" id="fep-tags" value="<?php echo ($post) ? $post['tags']:''; ?>"><br/>
<div class="removal" id="fep-featured-image">
<div id="fep-featured-image-container"><?php echo $featured_img_html; ?></div>
<a id="fep-featured-image-link" href="#">Choose Featured Image</a>
<input type="hidden" id="fep-featured-image-id" value="<?php echo (!empty($featured_img))?$featured_img:'-1'; ?>"/>
</div>
Add custom CSS to your theme:
.removal{
display:none !important;
}
For Question # 2:
You can do two things. You can completely remove the user's ability to type text in by removing the textarea altogether in CSS:
#fep-about{
display:none !important;
}
If for any reason you actually need the text box (not sure why). I would add custom Javascript to detect if the user has entered a key or copy and pasted any text. Considering the ID of the textarea element is fep-about:
var ele = document.getElementById('fep-about')
ele.addEventListener('keyup',function(){
this.value = "";
alert("Only direct media uploads are allowed!");
});
ele.addEventListener('onchange',function(){
this.value = "";
alert("Only direct media uploads are allowed!");
});
Here is the JSFiddle for this: https://jsfiddle.net/a3zsdo88/1/
Compatibility Issues
If there are some sort of issues in CSS classes overriding the above ones, just add the display statements inline with the elements:
<div id="fep-featured-image" style="display:none !important;">
<div id="fep-featured-image-container"><?php echo $featured_img_html; ?> </div>
<a id="fep-featured-image-link" href="#">Choose Featured Image</a>
<input type="hidden" id="fep-featured-image-id" value="<?php echo (!empty($featured_img))?$featured_img:'-1'; ?>"/>
</div>
See how I added the display statement to the parent element. Do that for the elements you do not want shown.
If you don't have a way to customize your Javascript easily, then add a <script></script> block directly in your HTML in your form file.
<script>
var ele = document.getElementById('fep-about')
ele.addEventListener('keyup',function(){
this.value = "";
alert("Only direct media uploads are allowed!");
});
ele.addEventListener('onchange',function(){
this.value = "";
alert("Only direct media uploads are allowed!");
});
</script>