Add description for using numeration in multi rename

js/api.js

@@ -209,14 +209,35 @@ const Blockbench = {
 	showMessageBox(options = 0, cb) {
 		return new MessageBox(options, cb).show();
 	},
-	async textPrompt(title, value, callback, placeholder = null) {
+	/**
+	 * 
+	 * @param {*} title 
+	 * @param {*} value 
+	 * @param {*} callback 
+	 * @param {object} options Options
+	 * @param {string} options.info Info text
+	 * @param {string} options.description Description for the text input
+	 * @returns {Promise<string>} Input value
+	 */
+	async textPrompt(title, value, callback, options = 0) {
+		if (typeof options == 'string') {
+			options = {placeholder: options};
+			console.warn('textPrompt: 4th argument is expected to be a string');
+		}
 		let answer = await new Promise((resolve) => {
+			let form = {
+				text: {full_width: true, placeholder: options.placeholder, value, description: options.description}
+			};
+			if (options.info) {
+				form.description = {
+					type: 'info',
+					text: tl(options.info)
+				}
+			}
 			new Dialog({
 				id: 'text_input',
 				title: title || 'dialog.input.title',
-				form: {
-					text: {full_width: true, placeholder, value}
-				},
+				form,
 				onConfirm({text}) {
 					if (callback) callback(text);
 					resolve(text);

js/io/io.js

@@ -676,7 +676,7 @@ BARS.defineActions(function() {
 						Blockbench.showQuickMessage('message.invalid_link')
 					})
 				}
-			}, 'https://blckbn.ch/123abc')
+			}, {placeholder: 'https://blckbn.ch/123abc'});
 		}
 	})
 	new Action('extrude_texture', {

js/outliner/outliner.js

@@ -952,11 +952,15 @@ function renameOutliner(element) {
 				if (name) {
 					Undo.initEdit({elements: selected})
 					selected.forEach(function(obj, i) {
-						obj.name = name.replace(/%/g, obj.index).replace(/\$/g, i)
+						obj.name = name.replace(/%+/g, val => {
+							return (obj.getParentArray().indexOf(obj)+1).toDigitString(val.length)
+						}).replace(/\$+/g, val => {
+							return (i+1).toDigitString(val.length)
+						});
 					})
 					Undo.finishEdit('Rename')
 				}
-			})
+			}, {description: tl('message.rename_elements.numbering')})
 		}
 	}
 }

lang/en.json

@@ -420,6 +420,8 @@
 	"message.invalid_session.title": "Invalid Session Token",
 	"message.invalid_session.message": "The session you are trying to join has expired or the token provided is invalid.",
 
+	"message.rename_elements.numbering": "You can use special characters to generate sequential numbers: % to get the index of the element within its group, $ to get the index within the selection.",
+
 	"dialog.project.title": "Project",
 	"dialog.project.name": "File Name",
 	"dialog.project.parent": "Parent Model",