Created
November 24, 2018 04:36
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jupyter ipywidget file picker and browser / explorer
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| import os | |
| import ipywidgets as widgets | |
| class FilePicker(object): | |
| """ipywidget for filepicking | |
| Display the widget in a notebook: | |
| >>> file_picker = FilePicker() | |
| >>> file_picker.widget | |
| Get the selected file path: | |
| >>> file_picker.file | |
| """ | |
| def __init__(self, rows=20): | |
| self.__selected_dir = os.getcwd() | |
| self.__item_layout = widgets.Layout(width='auto') | |
| self.__nb_rows = rows | |
| self.__file_selector = widgets.Select( | |
| options=os.listdir(self.__selected_dir), | |
| rows=min(len(os.listdir(self.__selected_dir)), self.__nb_rows), | |
| layout=self.__item_layout | |
| ) | |
| self.__open_button = widgets.Button( | |
| description='open', | |
| layout=widgets.Layout(flex='auto 1 auto', width='auto') | |
| ) | |
| self.__parent_button = widgets.Button( | |
| icon='chevron-up', | |
| layout=widgets.Layout(flex='auto 1 auto', width='auto') | |
| ) | |
| self.__file_selection = widgets.Text( | |
| value=os.path.join( | |
| self.__selected_dir, self.__file_selector.value), | |
| disabled=True, | |
| layout=widgets.Layout(flex='1 1 auto', width='auto') | |
| ) | |
| def open_button_clicked(button): | |
| if os.path.isdir(self.__file_selection.value): | |
| self.__selected_dir = self.__file_selection.value | |
| self.__file_selector.options = os.listdir(self.__selected_dir) | |
| self.__file_selector.rows = min( | |
| len(os.listdir(self.__selected_dir)), self.__nb_rows) | |
| def parent_button_clicked(button): | |
| self.__selected_dir, _ = os.path.split(self.__selected_dir) | |
| self.__file_selector.options = os.listdir(self.__selected_dir) | |
| self.__file_selector.rows = min( | |
| len(os.listdir(self.__selected_dir)), self.__nb_rows) | |
| self.__file_selection.value = os.path.join( | |
| self.__selected_dir, self.__file_selector.value | |
| ) | |
| self.file = self.__file_selection.value | |
| def update_path(change): | |
| self.__file_selection.value = os.path.join( | |
| self.__selected_dir, self.__file_selector.value | |
| ) | |
| self.file = self.__file_selection.value | |
| self.__parent_button.on_click(parent_button_clicked) | |
| self.__open_button.on_click(open_button_clicked) | |
| self.__file_selector.observe(update_path) | |
| self.widget = widgets.VBox([ | |
| widgets.HBox([ | |
| self.__parent_button, self.__file_selection, self.__open_button | |
| ]), | |
| self.__file_selector | |
| ]) | |
| self.file = self.__file_selection.value |
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