Editor: restructure word count

* The WordCounter should only do one thing: count words. This makes it also easier to test.
* Add some really basic unit tests.
* Instead of only refreshing the count on enter and delete, refresh the count when the user stops typing. Also look at paste and content changes in TinyMCE.
* Use `match` instead of `replace` when it is appropriate.
* More readable code.

See #30966. Fixes #26620.


Built from https://develop.svn.wordpress.org/trunk@32856


git-svn-id: http://core.svn.wordpress.org/trunk@32827 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/post.js

@@ -203,7 +203,6 @@ $(document).on( 'heartbeat-send.refresh-lock', function( e, data ) {
 jQuery(document).ready( function($) {
 	var stamp, visibility, $submitButtons, updateVisibility, updateText,
 		sticky = '',
-		last = 0,
 		$textarea = $('#content'),
 		$document = $(document),
 		$editSlugWrap = $('#edit-slug-box'),
@@ -788,24 +787,6 @@ jQuery(document).ready( function($) {
 		});
 	}
 
-	// word count
-	if ( typeof(wpWordCount) != 'undefined' ) {
-		$document.triggerHandler('wpcountwords', [ $textarea.val() ]);
-
-		$textarea.keyup( function(e) {
-			var k = e.keyCode || e.charCode;
-
-			if ( k == last )
-				return true;
-
-			if ( 13 == k || 8 == last || 46 == last )
-				$document.triggerHandler('wpcountwords', [ $textarea.val() ]);
-
-			last = k;
-			return true;
-		});
-	}
-
 	wptitlehint = function(id) {
 		id = id || 'title';
 
@@ -935,3 +916,44 @@ jQuery(document).ready( function($) {
 		}
 	});
 });
+
+( function( $, counter ) {
+	$( function() {
+		var $content = $( '#content' ),
+			$count = $( '#wp-word-count' ).find( '.word-count' ),
+			prevCount = 0,
+			contentEditor;
+
+		function update() {
+			var text, count;
+
+			if ( ! contentEditor || contentEditor.isHidden() ) {
+				text = $content.val();
+			} else {
+				text = contentEditor.getContent( { format: 'raw' } );
+			}
+
+			count = counter.count( text );
+
+			if ( count !== prevCount ) {
+				$count.text( count );
+			}
+
+			prevCount = count;
+		}
+
+		$( document ).on( 'tinymce-editor-init', function( event, editor ) {
+			if ( editor.id !== 'content' ) {
+				return;
+			}
+
+			contentEditor = editor;
+
+			editor.on( 'nodechange keyup', _.debounce( update, 2000 ) );
+		} );
+
+		$content.on( 'input keyup', _.debounce( update, 2000 ) );
+
+		update();
+	} );
+} )( jQuery, new wp.utils.WordCounter() );

wp-admin/js/word-count.js

@@ -1,44 +1,48 @@
-/* global wordCountL10n */
-var wpWordCount;
-(function($,undefined) {
-	wpWordCount = {
+( function() {
+	function WordCounter( settings ) {
+		var key;
 
-		settings : {
-			strip : /<[a-zA-Z\/][^<>]*>/g, // strip HTML tags
-			clean : /[0-9.(),;:!?%#$¿'"_+=\\/-]+/g, // regexp to remove punctuation, etc.
-			w : /\S\s+/g, // word-counting regexp
-			c : /\S/g // char-counting regexp for asian languages
-		},
-
-		block : 0,
-
-		wc : function(tx, type) {
-			var t = this, w = $('.word-count'), tc = 0;
-
-			if ( type === undefined )
-				type = wordCountL10n.type;
-			if ( type !== 'w' && type !== 'c' )
-				type = 'w';
-
-			if ( t.block )
-				return;
-
-			t.block = 1;
-
-			setTimeout( function() {
-				if ( tx ) {
-					tx = tx.replace( t.settings.strip, ' ' ).replace( /&nbsp;|&#160;/gi, ' ' );
-					tx = tx.replace( t.settings.clean, '' );
-					tx.replace( t.settings[type], function(){tc++;} );
+		if ( settings ) {
+			for ( key in settings ) {
+				if ( settings.hasOwnProperty( key ) ) {
+					this.settings[ key ] = settings[ key ];
 				}
-				w.html(tc.toString());
-
-				setTimeout( function() { t.block = 0; }, 2000 );
-			}, 1 );
 			}
+		}
+	}
+
+	WordCounter.prototype.settings = {
+		HTMLRegExp: /<\/?[a-z][^>]*?>/gi,
+		spaceRegExp: /&nbsp;|&#160;/gi,
+		removeRegExp: /[0-9.(),;:!?%#$¿'"_+=\\\/-]+/g,
+		wordsRegExp: /\S\s+/g,
+		charactersRegExp: /\S/g,
+		l10n: window.wordCountL10n || {}
 	};
 
-	$(document).bind( 'wpcountwords', function(e, txt) {
-		wpWordCount.wc(txt);
-	});
-}(jQuery));
+	WordCounter.prototype.count = function( text, type ) {
+		var count = 0;
+
+		type = type || this.settings.l10n.type || 'words';
+
+		if ( text ) {
+			text = ' ' + text + ' ';
+
+			text = text.replace( this.settings.HTMLRegExp, ' ' );
+			text = text.replace( this.settings.spaceRegExp, ' ' );
+			text = text.replace( this.settings.removeRegExp, '' );
+
+			text = text.match( this.settings[ type + 'RegExp' ] );
+
+			if ( text ) {
+				count = text.length;
+			}
+		}
+
+		return count;
+	};
+
+	window.wp = window.wp || {};
+	window.wp.utils = window.wp.utils || {};
+	window.wp.utils.WordCounter = WordCounter;
+} )();

wp-admin/js/word-count.min.js

@@ -1 +1 @@
-var wpWordCount;!function(a,b){wpWordCount={settings:{strip:/<[a-zA-Z\/][^<>]*>/g,clean:/[0-9.(),;:!?%#$¿'"_+=\\/-]+/g,w:/\S\s+/g,c:/\S/g},block:0,wc:function(c,d){var e=this,f=a(".word-count"),g=0;d===b&&(d=wordCountL10n.type),"w"!==d&&"c"!==d&&(d="w"),e.block||(e.block=1,setTimeout(function(){c&&(c=c.replace(e.settings.strip," ").replace(/&nbsp;|&#160;/gi," "),c=c.replace(e.settings.clean,""),c.replace(e.settings[d],function(){g++})),f.html(g.toString()),setTimeout(function(){e.block=0},2e3)},1))}},a(document).bind("wpcountwords",function(a,b){wpWordCount.wc(b)})}(jQuery);
+!function(){function a(a){var b;if(a)for(b in a)a.hasOwnProperty(b)&&(this.settings[b]=a[b])}a.prototype.settings={HTMLRegExp:/<\/?[a-z][^>]*?>/gi,spaceRegExp:/&nbsp;|&#160;/gi,removeRegExp:/[0-9.(),;:!?%#$¿'"_+=\\\/-]+/g,wordsRegExp:/\S\s+/g,charactersRegExp:/\S/g,l10n:window.wordCountL10n||{}},a.prototype.count=function(a,b){var c=0;return b=b||this.settings.l10n.type||"words",a&&(a=" "+a+" ",a=a.replace(this.settings.HTMLRegExp," "),a=a.replace(this.settings.spaceRegExp," "),a=a.replace(this.settings.removeRegExp,""),a=a.match(this.settings[b+"RegExp"]),a&&(c=a.length)),c},window.wp=window.wp||{},window.wp.utils=window.wp.utils||{},window.wp.utils.WordCounter=a}();

wp-includes/js/tinymce/plugins/wordpress/plugin.js

@@ -7,8 +7,7 @@ tinymce.PluginManager.add( 'wordpress', function( editor ) {
 	var DOM = tinymce.DOM,
 		each = tinymce.each,
 		__ = editor.editorManager.i18n.translate,
-		wpAdvButton, style,
-		last = 0;
+		wpAdvButton, style;
 
 	if ( typeof window.jQuery !== 'undefined' ) {
 		window.jQuery( document ).triggerHandler( 'tinymce-editor-setup', [ editor ] );
@@ -363,23 +362,6 @@ tinymce.PluginManager.add( 'wordpress', function( editor ) {
 		}
 	});
 
-	// Word count
-	if ( typeof window.jQuery !== 'undefined' ) {
-		editor.on( 'keyup', function( e ) {
-			var key = e.keyCode || e.charCode;
-
-			if ( key === last ) {
-				return;
-			}
-
-			if ( 13 === key || 8 === last || 46 === last ) {
-				window.jQuery( document ).triggerHandler( 'wpcountwords', [ editor.getContent({ format : 'raw' }) ] );
-			}
-
-			last = key;
-		});
-	}
-
 	editor.on( 'SaveContent', function( e ) {
 		// If editor is hidden, we just want the textarea's value to be saved
 		if ( ! editor.inline && editor.isHidden() ) {

wp-includes/script-loader.php

@@ -371,11 +371,11 @@ function wp_default_scripts( &$scripts ) {
 
 	$scripts->add( 'wpdialogs', "/wp-includes/js/wpdialog$suffix.js", array( 'jquery-ui-dialog' ), false, 1 );
 
-	$scripts->add( 'word-count', "/wp-admin/js/word-count$suffix.js", array( 'jquery' ), false, 1 );
+	$scripts->add( 'word-count', "/wp-admin/js/word-count$suffix.js", array(), false, 1 );
 	did_action( 'init' ) && $scripts->localize( 'word-count', 'wordCountL10n', array(
 		/* translators: If your word count is based on single characters (East Asian characters),
 		   enter 'characters'. Otherwise, enter 'words'. Do not translate into your own language. */
-		'type' => 'characters' == _x( 'words', 'word count: words or characters?' ) ? 'c' : 'w',
+		'type' => _x( 'words', 'word count: words or characters?' )
 	) );
 
 	$scripts->add( 'media-upload', "/wp-admin/js/media-upload$suffix.js", array( 'thickbox', 'shortcode' ), false, 1 );
@@ -451,7 +451,7 @@ function wp_default_scripts( &$scripts ) {
 			'tagDelimiter' => _x( ',', 'tag delimiter' ),
 		) );
 
-		$scripts->add( 'post', "/wp-admin/js/post$suffix.js", array( 'suggest', 'wp-lists', 'postbox', 'tags-box' ), false, 1 );
+		$scripts->add( 'post', "/wp-admin/js/post$suffix.js", array( 'suggest', 'wp-lists', 'postbox', 'tags-box', 'underscore', 'word-count' ), false, 1 );
 		did_action( 'init' ) && $scripts->localize( 'post', 'postL10n', array(
 			'ok' => __('OK'),
 			'cancel' => __('Cancel'),

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.3-alpha-32855';
+$wp_version = '4.3-alpha-32856';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.