[Client:Mobile] Implement file rename

src/web/app/mobile/tags/drive/file-viewer.tag

@@ -183,7 +183,19 @@
 		@bytes-to-size = require '../../../common/scripts/bytes-to-size.js'
 		@get-gcd = require '../../../common/scripts/gcd.js'
 
+		@mixin \api
+
 		@file = @opts.file
 		@kind = @file.type.split \/ .0
+
+		@rename = ~>
+			name = window.prompt '名前を変更' @file.name
+			if name? and name != '' and name != @file.name
+				@api \drive/files/update do
+					file_id: @file.id
+					name: name
+				.then ~>
+					@parent.cf @file
+
 	</script>
 </mk-drive-file-viewer>