LoadDialog – displaying a directory of files

In this section, we will discuss how to display a directory tree in Kivy in order to select a file. First, we will define the interface in loaddialog.kv:

390. # File name: loaddialog.kv
391. <LoadDialog>:
392.     BoxLayout:
393.         size: root.size
394.         pos: root.pos
395.         orientation: "vertical"
396.         FileChooserListView:
397.             id: filechooser
398.             path: './'
399.         BoxLayout:
400.             size_hint_y: None
401.             height: 30
402.             Button:
403.                 text: "Cancel"
404.                 on_release: root.cancel()
405.             Button:
406.                 text: "Load"
407.                 on_release: root.load(filechooser.path, filechooser.selection)

There is nothing new in this code except for the use of the FileChooserListView widget. It will display the directory tree of files. The path property (line 398) will indicate the base path of where to...