jesselau76 · September 24, 2018 22:35
diff --git a/find-and-replace-text-mode.php b/find-and-replace-text-mode.php
 <?php
 /**
 * Plugin Name: Find and Replace Text Mode
 * Plugin URI: http://jesselau.com
 * Version: 1.0
 * Author: jesse Lau
 * Author URI: https://jesselau.com
 * Description: Add find and replace function in WordPress editor text mode.
 * License: GPL2
 */
 
 class jesse_find_replace_button {
 
    /**
    * Constructor. Called when the plugin is initialised.
    */
    function __construct() {
 
 		if ( is_admin() ) {
 		    
 		    add_action( 'admin_print_footer_scripts', array( &$this, 'admin_footer_scripts' ) );
 		}

    }

  
 /**
 * Adds the Find and Replace button to the Quicktags (Text) toolbar of the content editor
 */
 function admin_footer_scripts() {

 	// Check the Quicktags script is in use
 	if ( ! wp_script_is( 'quicktags' ) ) {
 		return;
 	}
 	?>
 	<script type="text/javascript">
 		QTags.addButton( 'jesse_find_replace_button', 'Find & Replace', insert_button );
 		function insert_button() {
 			
 			//WP Editor always use "content" as ID
 			//
 			var defaultid = "content";
 			var x = document.getElementById(defaultid);
 			
 			if ((x==null)||(x.type!=="textarea")){
 				alert("You TEXT AREA ID is not default value. Please read help file.");
 					return;
 			}
 							
 			var text = document.getElementById(defaultid).value;
 					
 		    var search = prompt('Find What:');
 			if( !search)
                return;
 			
            var pattern = new RegExp(search,"gi");
 			var findCount = (text.match(pattern) || []).length;

 			

            if(findCount == 0){
 				alert("Nothing found!");
                return;
            }
 		
            var replace = prompt('Replace With:');
           
            if(  !replace)
                replace="";                
 			
           
            if(confirm("find '"+search+"', "+findCount + " matches found, replace with '"+replace+"' now?")){
 				
                document.getElementById(defaultid).value= text.replace(pattern, replace); 
 				
            }
 		    
 		}
 	</script>
 	<?php

 }
 
 }
 
 $jesse_find_replace_button = new jesse_find_replace_button;