1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
from abc import abstractmethod
from typing import List, Type
from AnyQt.QtCore import QUrl
from AnyQt.QtGui import QDropEvent
from orangewidget.utils.filedialogs import (
open_filename_dialog_save, open_filename_dialog,
RecentPath, RecentPathsWidgetMixin, RecentPathsWComboMixin,
)
# imported for backcompatibility
from orangewidget.utils.filedialogs import ( # pylint: disable=unused-import
fix_extension, format_filter, get_file_name, Compression
)
from Orange.data.io import FileFormat
from Orange.util import deprecated
from Orange.widgets.widget import OWWidget
__all__ = [
"open_filename_dialog_save", "open_filename_dialog",
"RecentPath", "RecentPathsWidgetMixin", "RecentPathsWComboMixin",
"stored_recent_paths_prepend", "OWUrlDropBase"
]
@deprecated
def dialog_formats():
"""
Return readable file types for QFileDialogs.
"""
return ("All readable files ({});;".format(
'*' + ' *'.join(FileFormat.readers.keys())) +
";;".join("{} (*{})".format(f.DESCRIPTION, ' *'.join(f.EXTENSIONS))
for f in sorted(set(FileFormat.readers.values()),
key=list(FileFormat.readers.values()).index)))
def stored_recent_paths_prepend(
class_: Type[RecentPathsWidgetMixin], r: RecentPath
) -> List[RecentPath]:
"""
Load existing stored defaults *recent_paths* and move or prepend
`r` to front.
"""
existing = get_stored_default_recent_paths(class_)
if r in existing:
existing.remove(r)
return [r] + existing
def get_stored_default_recent_paths(class_: Type[RecentPathsWidgetMixin]):
recent_paths = []
try:
items = class_.settingsHandler.defaults.get("recent_paths", [])
for item in items:
if isinstance(item, RecentPath):
recent_paths.append(item)
except (AttributeError, KeyError, TypeError):
pass
return recent_paths
class OWUrlDropBase(OWWidget, openclass=True):
"""
A abstract base class for a OWBaseWidget that accepts url drops.
"""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.setAcceptDrops(True)
@abstractmethod
def canDropUrl(self, url: QUrl) -> bool:
"""
Can the `url` be dropped on this widget.
This method must be reimplemented in a subclass.
"""
raise NotImplementedError
@abstractmethod
def handleDroppedUrl(self, url: QUrl) -> None:
"""
Handle the dropped `url`.
This method must be reimplemented in a subclass.
"""
raise NotImplementedError
def dragEnterEvent(self, event):
urls = event.mimeData().urls()
if urls and self.canDropUrl(urls[0]):
event.acceptProposedAction()
return
super().dragEnterEvent(event)
def dragMoveEvent(self, event):
urls = event.mimeData().urls()
if urls and self.canDropUrl(urls[0]):
event.acceptProposedAction()
return
super().dragMoveEvent(event)
def dropEvent(self, event: QDropEvent):
urls = event.mimeData().urls()
if urls and self.canDropUrl(urls[0]):
self.handleDroppedUrl(urls[0])
event.acceptProposedAction()
return
super().dropEvent(event)
|
