mirror of
https://github.com/liberatedsystems/openCom-Companion.git
synced 2024-11-22 13:30:36 +01:00
514 lines
17 KiB
Python
514 lines
17 KiB
Python
'''
|
|
Android file chooser
|
|
--------------------
|
|
|
|
Android runs ``Activity`` asynchronously via pausing our ``PythonActivity``
|
|
and starting a new one in the foreground. This means
|
|
``AndroidFileChooser._open_file()`` will always return the default value of
|
|
``AndroidFileChooser.selection`` i.e. ``None``.
|
|
|
|
After the ``Activity`` (for us it's the file chooser ``Intent``) is completed,
|
|
Android moves it to the background (or destroys or whatever is implemented)
|
|
and pushes ``PythonActivity`` to the foreground.
|
|
|
|
We have a custom listener for ``android.app.Activity.onActivityResult()``
|
|
via `android` package from `python-for-android` recipe,
|
|
``AndroidFileChooser._on_activity_result()`` which is called independently of
|
|
any our action (we may call anything from our application in Python and this
|
|
handler will be called nevertheless on each ``android.app.Activity`` result
|
|
in the system).
|
|
|
|
In the handler we check if the ``request_code`` matches the code passed to the
|
|
``Context.startActivityForResult()`` i.e. if the result from
|
|
``android.app.Activity`` is indeed meant for our ``PythonActivity`` and then we
|
|
proceed.
|
|
|
|
Since the ``android.app.Activity.onActivityResult()`` is the only way for us
|
|
to intercept the result and we have a handler bound via ``android`` package,
|
|
we need to get the path/file/... selection to the user the same way.
|
|
|
|
Threading + ``Thread.join()`` or ``time.sleep()`` or any other kind of waiting
|
|
for the result is not an option because:
|
|
|
|
1) ``android.app.Activity.onActivityResult()`` might remain unexecuted if
|
|
the launched file chooser activity does not return the result (``Activity``
|
|
dies/freezes/etc).
|
|
|
|
2) Thread will be still waiting for the result e.g. an update of a value or
|
|
to actually finish, however the result from the call of
|
|
``AndroidFileChooser._open_file()`` will be returned nevertheless and anything
|
|
using that result will use an incorrect one i.e. the default value of
|
|
``AndroidFilechooser.selection`` (``None``).
|
|
|
|
.. versionadded:: 1.4.0
|
|
'''
|
|
|
|
from os.path import join
|
|
from random import randint
|
|
|
|
from android import activity, mActivity
|
|
from jnius import autoclass, cast, JavaException
|
|
from plyer.facades import FileChooser
|
|
from plyer import storagepath
|
|
|
|
Environment = autoclass("android.os.Environment")
|
|
String = autoclass('java.lang.String')
|
|
Intent = autoclass('android.content.Intent')
|
|
Activity = autoclass('android.app.Activity')
|
|
DocumentsContract = autoclass('android.provider.DocumentsContract')
|
|
ContentUris = autoclass('android.content.ContentUris')
|
|
Uri = autoclass('android.net.Uri')
|
|
Long = autoclass('java.lang.Long')
|
|
IMedia = autoclass('android.provider.MediaStore$Images$Media')
|
|
VMedia = autoclass('android.provider.MediaStore$Video$Media')
|
|
AMedia = autoclass('android.provider.MediaStore$Audio$Media')
|
|
Files = autoclass('android.provider.MediaStore$Files')
|
|
FileOutputStream = autoclass('java.io.FileOutputStream')
|
|
|
|
|
|
class AndroidFileChooser(FileChooser):
|
|
'''
|
|
FileChooser implementation for Android using
|
|
the built-in file browser via Intent.
|
|
|
|
.. versionadded:: 1.4.0
|
|
'''
|
|
|
|
# filechooser activity <-> result pair identification
|
|
select_code = None
|
|
save_code = None
|
|
|
|
# default selection value
|
|
selection = None
|
|
|
|
# select multiple files
|
|
multiple = False
|
|
|
|
# mime types
|
|
mime_type = {
|
|
"doc": "application/msword",
|
|
"docx": "application/vnd.openxmlformats-officedocument." +
|
|
"wordprocessingml.document",
|
|
"ppt": "application/vnd.ms-powerpoint",
|
|
"pptx": "application/vnd.openxmlformats-officedocument." +
|
|
"presentationml.presentation",
|
|
"xls": "application/vnd.ms-excel",
|
|
"xlsx": "application/vnd.openxmlformats-officedocument." +
|
|
"spreadsheetml.sheet",
|
|
"text": "text/*",
|
|
"pdf": "application/pdf",
|
|
"zip": "application/zip",
|
|
"image": "image/*",
|
|
"video": "video/*",
|
|
"audio": "audio/*",
|
|
"application": "application/*"}
|
|
|
|
selected_mime_type = None
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
super().__init__(*args, **kwargs)
|
|
self.select_code = randint(123456, 654321)
|
|
self.save_code = randint(123456, 654321)
|
|
self.selection = None
|
|
|
|
# bind a function for a response from filechooser activity
|
|
activity.bind(on_activity_result=self._on_activity_result)
|
|
|
|
@staticmethod
|
|
def _handle_selection(selection):
|
|
'''
|
|
Dummy placeholder for returning selection from
|
|
``android.app.Activity.onActivityResult()``.
|
|
|
|
.. versionadded:: 1.4.0
|
|
'''
|
|
return selection
|
|
|
|
def _open_file(self, **kwargs):
|
|
'''
|
|
Running Android Activity is non-blocking and the only call
|
|
that blocks is onActivityResult running in GUI thread
|
|
|
|
.. versionadded:: 1.4.0
|
|
'''
|
|
|
|
# set up selection handler
|
|
# startActivityForResult is async
|
|
# onActivityResult is sync
|
|
self._handle_selection = kwargs.pop(
|
|
'on_selection', self._handle_selection
|
|
)
|
|
self.selected_mime_type = \
|
|
kwargs.pop("filters")[0] if "filters" in kwargs else ""
|
|
|
|
# create Intent for opening
|
|
file_intent = Intent(Intent.ACTION_GET_CONTENT)
|
|
if (
|
|
not self.selected_mime_type
|
|
or not isinstance(self.selected_mime_type, str)
|
|
or self.selected_mime_type not in self.mime_type
|
|
):
|
|
file_intent.setType("*/*")
|
|
else:
|
|
file_intent.setType(self.mime_type[self.selected_mime_type])
|
|
file_intent.addCategory(
|
|
Intent.CATEGORY_OPENABLE
|
|
)
|
|
|
|
# use putExtra to allow multiple file selection
|
|
if kwargs.get('multiple', self.multiple):
|
|
file_intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, True)
|
|
|
|
# start a new activity from PythonActivity
|
|
# which creates a filechooser via intent
|
|
mActivity.startActivityForResult(
|
|
Intent.createChooser(file_intent, cast(
|
|
'java.lang.CharSequence',
|
|
String("FileChooser")
|
|
)),
|
|
self.select_code
|
|
)
|
|
|
|
def _save_file(self, **kwargs):
|
|
self._save_callback = kwargs.pop("callback")
|
|
|
|
title = kwargs.pop("title", None)
|
|
|
|
self.selected_mime_type = \
|
|
kwargs.pop("filters")[0] if "filters" in kwargs else ""
|
|
|
|
file_intent = Intent(Intent.ACTION_CREATE_DOCUMENT)
|
|
if (
|
|
not self.selected_mime_type
|
|
or not isinstance(self.selected_mime_type, str)
|
|
or self.selected_mime_type not in self.mime_type
|
|
):
|
|
file_intent.setType("*/*")
|
|
else:
|
|
file_intent.setType(self.mime_type[self.selected_mime_type])
|
|
file_intent.addCategory(
|
|
Intent.CATEGORY_OPENABLE
|
|
)
|
|
|
|
if title:
|
|
file_intent.putExtra(Intent.EXTRA_TITLE, title)
|
|
|
|
mActivity.startActivityForResult(
|
|
Intent.createChooser(file_intent, cast(
|
|
'java.lang.CharSequence',
|
|
String("FileChooser")
|
|
)),
|
|
self.save_code
|
|
)
|
|
|
|
def _on_activity_result(self, request_code, result_code, data):
|
|
'''
|
|
Listener for ``android.app.Activity.onActivityResult()`` assigned
|
|
via ``android.activity.bind()``.
|
|
|
|
.. versionadded:: 1.4.0
|
|
'''
|
|
|
|
# bad data
|
|
if data is None:
|
|
return
|
|
|
|
if result_code != Activity.RESULT_OK:
|
|
# The action had been cancelled.
|
|
return
|
|
|
|
if request_code == self.select_code:
|
|
selection = []
|
|
# Process multiple URI if multiple files selected
|
|
try:
|
|
for count in range(data.getClipData().getItemCount()):
|
|
ele = self._resolve_uri(
|
|
data.getClipData().getItemAt(count).getUri()) or []
|
|
selection.append(ele)
|
|
except Exception:
|
|
selection = [self._resolve_uri(data.getData()), ]
|
|
|
|
# return value to object
|
|
self.selection = selection
|
|
# return value via callback
|
|
self._handle_selection(selection)
|
|
|
|
elif request_code == self.save_code:
|
|
uri = data.getData()
|
|
|
|
with mActivity.getContentResolver().openFileDescriptor(
|
|
uri, "w"
|
|
) as pfd:
|
|
with FileOutputStream(
|
|
pfd.getFileDescriptor()
|
|
) as fileOutputStream:
|
|
# return value via callback
|
|
self._save_callback(fileOutputStream)
|
|
|
|
@staticmethod
|
|
def _handle_external_documents(uri):
|
|
'''
|
|
Selection from the system filechooser when using ``Phone``
|
|
or ``Internal storage`` or ``SD card`` option from menu.
|
|
|
|
.. versionadded:: 1.4.0
|
|
'''
|
|
|
|
file_id = DocumentsContract.getDocumentId(uri)
|
|
file_type, file_name = file_id.split(':')
|
|
|
|
primary_storage = storagepath.get_external_storage_dir()
|
|
sdcard_storage = storagepath.get_sdcard_dir()
|
|
|
|
directory = primary_storage
|
|
|
|
if file_type == "primary":
|
|
directory = primary_storage
|
|
elif file_type == "home":
|
|
directory = join(primary_storage, Environment.DIRECTORY_DOCUMENTS)
|
|
elif sdcard_storage and file_type in sdcard_storage:
|
|
directory = sdcard_storage
|
|
|
|
return join(directory, file_name)
|
|
|
|
@staticmethod
|
|
def _handle_media_documents(uri):
|
|
'''
|
|
Selection from the system filechooser when using ``Images``
|
|
or ``Videos`` or ``Audio`` option from menu.
|
|
|
|
.. versionadded:: 1.4.0
|
|
'''
|
|
|
|
file_id = DocumentsContract.getDocumentId(uri)
|
|
file_type, file_name = file_id.split(':')
|
|
selection = '_id=?'
|
|
|
|
if file_type == 'image':
|
|
uri = IMedia.EXTERNAL_CONTENT_URI
|
|
elif file_type == 'video':
|
|
uri = VMedia.EXTERNAL_CONTENT_URI
|
|
elif file_type == 'audio':
|
|
uri = AMedia.EXTERNAL_CONTENT_URI
|
|
|
|
# Other file type was selected (probably in the Documents folder)
|
|
else:
|
|
uri = Files.getContentUri("external")
|
|
|
|
return file_name, selection, uri
|
|
|
|
@staticmethod
|
|
def _handle_downloads_documents(uri):
|
|
'''
|
|
Selection from the system filechooser when using ``Downloads``
|
|
option from menu. Might not work all the time due to:
|
|
|
|
1) invalid URI:
|
|
|
|
jnius.jnius.JavaException:
|
|
JVM exception occurred: Unknown URI:
|
|
content://downloads/public_downloads/1034
|
|
|
|
2) missing URI / android permissions
|
|
|
|
jnius.jnius.JavaException:
|
|
JVM exception occurred:
|
|
Permission Denial: reading
|
|
com.android.providers.downloads.DownloadProvider uri
|
|
content://downloads/all_downloads/1034 from pid=2532, uid=10455
|
|
requires android.permission.ACCESS_ALL_DOWNLOADS,
|
|
or grantUriPermission()
|
|
|
|
Workaround:
|
|
Selecting path from ``Phone`` -> ``Download`` -> ``<file>``
|
|
(or ``Internal storage``) manually.
|
|
|
|
.. versionadded:: 1.4.0
|
|
'''
|
|
|
|
try:
|
|
download_dir = Environment.getExternalStoragePublicDirectory(
|
|
Environment.DIRECTORY_DOWNLOADS
|
|
).getPath()
|
|
path = AndroidFileChooser._parse_content(
|
|
uri=uri,
|
|
projection=["_display_name"],
|
|
selection=None,
|
|
selection_args=None,
|
|
sort_order=None,
|
|
)
|
|
return join(download_dir, path)
|
|
|
|
except Exception:
|
|
import traceback
|
|
traceback.print_exc()
|
|
|
|
# known locations, differ between machines
|
|
downloads = [
|
|
'content://downloads/public_downloads',
|
|
'content://downloads/my_downloads',
|
|
|
|
# all_downloads requires separate permission
|
|
# android.permission.ACCESS_ALL_DOWNLOADS
|
|
'content://downloads/all_downloads'
|
|
]
|
|
|
|
file_id = DocumentsContract.getDocumentId(uri)
|
|
try_uris = [
|
|
ContentUris.withAppendedId(
|
|
Uri.parse(down), Long.valueOf(file_id)
|
|
)
|
|
for down in downloads
|
|
]
|
|
|
|
# try all known Download folder uris
|
|
# and handle JavaExceptions due to different locations
|
|
# for content:// downloads or missing permission
|
|
path = None
|
|
for down in try_uris:
|
|
try:
|
|
path = AndroidFileChooser._parse_content(
|
|
uri=down, projection=['_data'],
|
|
selection=None,
|
|
selection_args=None,
|
|
sort_order=None
|
|
)
|
|
|
|
except JavaException:
|
|
import traceback
|
|
traceback.print_exc()
|
|
|
|
# we got a path, ignore the rest
|
|
if path:
|
|
break
|
|
|
|
# alternative approach to Downloads by joining
|
|
# all data items from Activity result
|
|
if not path:
|
|
for down in try_uris:
|
|
try:
|
|
path = AndroidFileChooser._parse_content(
|
|
uri=down, projection=None,
|
|
selection=None,
|
|
selection_args=None,
|
|
sort_order=None,
|
|
index_all=True
|
|
)
|
|
|
|
except JavaException:
|
|
import traceback
|
|
traceback.print_exc()
|
|
|
|
# we got a path, ignore the rest
|
|
if path:
|
|
break
|
|
return path
|
|
|
|
def _resolve_uri(self, uri):
|
|
'''
|
|
Resolve URI input from ``android.app.Activity.onActivityResult()``.
|
|
|
|
.. versionadded:: 1.4.0
|
|
'''
|
|
|
|
uri_authority = uri.getAuthority()
|
|
uri_scheme = uri.getScheme().lower()
|
|
|
|
path = None
|
|
file_name = None
|
|
selection = None
|
|
downloads = None
|
|
|
|
# This does not allow file selected from google photos or gallery
|
|
# or even any other file explorer to work
|
|
# not a document URI, nothing to convert from
|
|
# if not DocumentsContract.isDocumentUri(mActivity, uri):
|
|
# return path
|
|
|
|
if uri_authority == 'com.android.externalstorage.documents':
|
|
return self._handle_external_documents(uri)
|
|
|
|
# in case a user selects a file from 'Downloads' section
|
|
# note: this won't be triggered if a user selects a path directly
|
|
# e.g.: Phone -> Download -> <some file>
|
|
elif uri_authority == 'com.android.providers.downloads.documents':
|
|
path = downloads = self._handle_downloads_documents(uri)
|
|
|
|
elif uri_authority == 'com.android.providers.media.documents':
|
|
file_name, selection, uri = self._handle_media_documents(uri)
|
|
|
|
# parse content:// scheme to path
|
|
if uri_scheme == 'content' and not downloads:
|
|
try:
|
|
path = self._parse_content(
|
|
uri=uri, projection=['_data'], selection=selection,
|
|
selection_args=file_name, sort_order=None
|
|
)
|
|
except JavaException: # handles array error for selection_args
|
|
path = self._parse_content(
|
|
uri=uri, projection=['_data'], selection=selection,
|
|
selection_args=[file_name], sort_order=None
|
|
)
|
|
|
|
# nothing to parse, file:// will return a proper path
|
|
elif uri_scheme == 'file':
|
|
path = uri.getPath()
|
|
|
|
return path
|
|
|
|
@staticmethod
|
|
def _parse_content(
|
|
uri, projection, selection, selection_args, sort_order,
|
|
index_all=False
|
|
):
|
|
'''
|
|
Parser for ``content://`` URI returned by some Android resources.
|
|
|
|
.. versionadded:: 1.4.0
|
|
'''
|
|
|
|
result = None
|
|
resolver = mActivity.getContentResolver()
|
|
read = Intent.FLAG_GRANT_READ_URI_PERMISSION
|
|
write = Intent.FLAG_GRANT_READ_URI_PERMISSION
|
|
persist = Intent.FLAG_GRANT_READ_URI_PERMISSION
|
|
|
|
# grant permission for our activity
|
|
mActivity.grantUriPermission(
|
|
mActivity.getPackageName(),
|
|
uri,
|
|
read | write | persist
|
|
)
|
|
|
|
if not index_all:
|
|
cursor = resolver.query(
|
|
uri, projection, selection,
|
|
selection_args, sort_order
|
|
)
|
|
|
|
idx = cursor.getColumnIndex(projection[0])
|
|
if idx != -1 and cursor.moveToFirst():
|
|
result = cursor.getString(idx)
|
|
else:
|
|
result = []
|
|
cursor = resolver.query(
|
|
uri, projection, selection,
|
|
selection_args, sort_order
|
|
)
|
|
while cursor.moveToNext():
|
|
for idx in range(cursor.getColumnCount()):
|
|
result.append(cursor.getString(idx))
|
|
result = '/'.join(result)
|
|
return result
|
|
|
|
def _file_selection_dialog(self, **kwargs):
|
|
mode = kwargs.pop('mode', None)
|
|
if mode == 'open':
|
|
self._open_file(**kwargs)
|
|
elif mode == 'save':
|
|
self._save_file(**kwargs)
|
|
|
|
|
|
def instance():
|
|
return AndroidFileChooser()
|