[filebrowser] In Gallery, do not allow file names starting with dot.

BUG=chromium-os:23777
TEST=See bug.
Review URL: https://chromiumcodereview.appspot.com/9328041

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@120774 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/extensions/extension_file_browser_private_api.cc

@@ -1573,6 +1573,9 @@ bool FileDialogStringsFunction::RunImpl() {
   SET_STRING(IDS_FILE_BROWSER, GALLERY_UNDO);
   SET_STRING(IDS_FILE_BROWSER, GALLERY_REDO);
   SET_STRING(IDS_FILE_BROWSER, GALLERY_FILE_EXISTS);
+  // Reusing the string, but with alias starting with GALLERY.
+  dict->SetString("GALLERY_FILE_HIDDEN_NAME",
+      l10n_util::GetStringUTF16(IDS_FILE_BROWSER_ERROR_HIDDEN_NAME));
 
   SET_STRING(IDS_FILE_BROWSER, CONFIRM_OVERWRITE_FILE);
   SET_STRING(IDS_FILE_BROWSER, FILE_ALREADY_EXISTS);

chrome/browser/resources/file_manager/js/image_editor/gallery.js

@@ -336,6 +336,10 @@ Gallery.prototype.onFilenameEditKeydown_ = function() {
       break;
 
     case 13:  // Enter
+      if (this.filenameEdit_.value && this.filenameEdit_.value[0] == '.') {
+        this.editor_.getPrompt().show('file_hidden_name', 5000);
+        break;
+      }
       if (this.filenameEdit_.value) {
         this.renameItem_(this.ribbon_.getSelectedItem(),
             this.filenameEdit_.value);

chrome/browser/resources/file_manager/js/mock_chrome.js

@@ -257,6 +257,8 @@ chrome.fileBrowserPrivate = {
       GALLERY_UNDO: 'Undo',
       GALLERY_REDO: 'Redo',
       GALLERY_FILE_EXISTS: 'File already exists',
+      GALLERY_FILE_HIDDEN_NAME: 'Names starting with dot are reserved ' +
+          'for the system. Please choose another name.',
 
       CONFIRM_OVERWRITE_FILE: 'A file named "$1" already exists. Do you want to replace it?',
       FILE_ALREADY_EXISTS: 'The file named "$1" already exists. Please choose a different name.',