Focus new file name input when modal opens

src/app/panels/file-panel.js

@@ -242,7 +242,7 @@ function filepanel (appAPI, filesProvider) {
           appAPI.switchFile(filesProvider['browser'].type + '/' + newName)
         }
       })
-    })
+    }, null, true)
   }
 
   /**

src/app/ui/modal-dialog-custom.js

@@ -6,8 +6,8 @@ module.exports = {
   alert: function (text) {
     modal('', yo`<div>${text}</div>`, null, { label: null })
   },
-  prompt: function (title, text, inputValue, ok, cancel) {
-    prompt(title, text, false, inputValue, ok, cancel)
+  prompt: function (title, text, inputValue, ok, cancel, focus) {
+    prompt(title, text, false, inputValue, ok, cancel, focus)
   },
   promptPassphrase: function (title, text, inputValue, ok, cancel) {
     prompt(title, text, true, inputValue, ok, cancel)
@@ -63,7 +63,7 @@ module.exports = {
   }
 }
 
-function prompt (title, text, hidden, inputValue, ok, cancel) {
+function prompt (title, text, hidden, inputValue, ok, cancel, focus) {
   if (!inputValue) inputValue = ''
   var type = hidden ? 'password' : 'text'
   var input = yo`<input type=${type} name='prompt_text' id='prompt_text' class="${css['prompt_text']}" value='${inputValue}' >`
@@ -73,6 +73,7 @@ function prompt (title, text, hidden, inputValue, ok, cancel) {
     },
     {
       fn: () => { if (typeof cancel === 'function') cancel() }
-    }
+    },
+    focus ? '#prompt_text' : undefined
   )
 }

src/app/ui/modaldialog.js

 var yo = require('yo-yo')
 var css = require('./styles/modaldialog-styles')
 
-module.exports = (title, content, ok, cancel) => {
+module.exports = (title, content, ok, cancel, focusSelector) => {
   var container = document.querySelector(`.${css.modal}`)
   if (!container) {
     document.querySelector('body').appendChild(html())
@@ -54,6 +54,15 @@ module.exports = (title, content, ok, cancel) => {
 
   function show () {
     container.style.display = 'block'
+    if (focusSelector) {
+      const focusTarget = document.querySelector(`.${css.modal} ${focusSelector}`)
+      if (focusTarget) {
+        focusTarget.focus()
+        if (typeof focusTarget.setSelectionRange === 'function') {
+          focusTarget.setSelectionRange(0, focusTarget.value.length)
+        }
+      }
+    }
   }
 
   function removeEventListener () {