socket logic for #1149 -- handling of help tab in ACP

public/src/modules/composer.js

@@ -819,7 +819,7 @@ define(['taskbar'], function(taskbar) {
 				});
 
 				socket.emit('modules.composer.renderHelp', function(err, html) {
-					if (html && html.length > 0) {
+					if (!err && html && html.length > 0) {
 						postContainer.find('.help').html(html);
 						postContainer.find('[data-pane=".tab-help"]').parent().removeClass('hidden');
 					}

src/socket.io/modules.js

@@ -100,7 +100,19 @@ SocketModules.composer.renderPreview = function(socket, content, callback) {
 };
 
 SocketModules.composer.renderHelp = function(socket, data, callback) {
-	plugins.fireHook('filter:composer.help', '', callback);
+	var helpText = meta.config['composer:customHelpText'] || '';
+
+	if (meta.config['composer:showHelpTab'] === '0') {
+		return callback(new Error('help-hidden'));
+	}
+
+	plugins.fireHook('filter:post.parse', helpText, function(err, helpText) {
+		if (!meta.config['composer:allowPluginHelp'] || meta.config['composer:allowPluginHelp'] === '1') {
+			plugins.fireHook('filter:composer.help', helpText, callback);
+		} else {
+			callback(null, helpText);
+		}
+	});
 };
 
 SocketModules.composer.register = function(socket, data) {