KivyMD:将文件管理器放在一个选项卡上

Question

我一直在尝试将FileManager和Tabs结合起来:

import kivy
kivy.require("2.1.0")
from kivy.lang import Builder
from kivy.core.window import Window
from kivymd.uix.floatlayout import MDFloatLayout
from kivymd.uix.filemanager import MDFileManager
from kivymd.app import MDApp
from kivymd.uix.tab import MDTabsBase
from kivymd.font_definitions import fonts
from kivymd.icon_definitions import md_icons
from kivymd.toast import toast
import os

KV = """
MDBoxLayout:
orientation: "vertical"
MDTopAppBar:
title: "Example Tabs"
MDTabs:
id: tabs
on_ref_press: app.on_ref_press(*args)
"""
class TreeTab(MDFloatLayout, MDTabsBase):
"""Class implementing file system browser."""
def __init__(self, **kwargs):
super().__init__(**kwargs)
Window.bind(on_keyboard=self.events)
self.manager_open = False
self.file_manager = MDFileManager(
exit_manager=self.exit_manager, select_path=self.select_path
)
def file_manager_open(self):
self.file_manager.show(os.path.expanduser("~"))  # output manager to the screen
self.manager_open = True
def select_path(self, path: str):
"""
It will be called when you click on the file name
or the catalog selection button.
:param path: path to the selected directory or file;
"""
self.exit_manager()
toast(path)
def exit_manager(self, *args):
"""Called when the user reaches the root of the directory tree."""
self.manager_open = False
self.file_manager.close()
def events(self, instance, keyboard, keycode, text, modifiers):
"""Called when buttons are pressed on the mobile device."""
if keyboard in (1001, 27):
if self.manager_open:
self.file_manager.back()
return True

class Tab(MDFloatLayout, MDTabsBase):
"""Class implementing content for a tab."""

class Ron(MDApp):
@staticmethod
def close_title(title):
return f"[ref={title}][font={fonts[-1]['fn_regular']}]{md_icons['close']}[/font][/ref]  {title}"
def build(self):
self.theme_cls.theme_style = "Dark"
self.theme_cls.primary_palette = "Orange"
return Builder.load_string(KV)
def on_start(self):
tree_tab = TreeTab(title="Files")
self.root.ids.tabs.add_widget(tree_tab)
tree_tab.file_manager_open()
self.root.ids.tabs.add_widget(Tab(title=self.close_title("Book")))
self.root.ids.tabs.add_widget(Tab(title=self.close_title("Details")))
def on_ref_press(
self,
instance_tabs,
instance_tab_label,
instance_tab,
instance_tab_bar,
instance_carousel,
):
"""
The method will be called when the ``on_ref_press`` event
occurs when you, for example, use markup text for tabs.
:param instance_tabs: <kivymd.uix.tab.MDTabs object>
:param instance_tab_label: <kivymd.uix.tab.MDTabsLabel object>
:param instance_tab: <__main__.Tab object>
:param instance_tab_bar: <kivymd.uix.tab.MDTabsBar object>
:param instance_carousel: <kivymd.uix.tab.MDTabsCarousel object>
"""
# Removes a tab by clicking on the close icon on the left.
for instance_tab in instance_carousel.slides:
if instance_tab.title == instance_tab_label.text:
instance_tabs.remove_widget(instance_tab_label)
break

if __name__ == "__main__":
Ron().run()

我希望文件管理器坚持它的标签;相反，它占据了整个屏幕，就像在FileManager示例中一样。在关闭文件管理器时，显示选项卡。我错过了什么?

Answer 1

我认为你可以通过创建一个假的ModalView类来克服MDFileManager设计者施加的限制，就像这样:

class FakeModalView:
def open(self):
pass

def dismiss(self):
pass

然后在代码中使用这个类:

class TreeTab(MDFloatLayout, MDTabsBase):
"""Class implementing file system browser."""
def __init__(self, **kwargs):
super().__init__(**kwargs)
Window.bind(on_keyboard=self.events)
self.manager_open = False
self.file_manager = MDFileManager(
exit_manager=self.exit_manager, select_path=self.select_path
)
self.file_manager._window_manager = FakeModalView()  # replace the ModalView that the file manager uses
def file_manager_open(self):
self.add_widget(self.file_manager)  # just add the file manager to the tab
self.file_manager.show(os.path.expanduser("~"))  # output manager to the screen
self.manager_open = True

警告:这还没有经过广泛的测试!