ferroui_base/platform/storage/
noop_storage_provider.rs

1use super::{
2    FilePickerOpenOptions, FilePickerSaveOptions, FolderPickerOpenOptions, IStorageFolder, OpenFilePickerResult,
3    SaveFilePickerResult,
4};
5use crate::input::LocalBoxFuture;
6use std::rc::Rc;
7
8/// A storage provider without pickers: what a top-level uses when its
9/// platform has no storage provider. Where there is a local file system it
10/// still opens bookmarks and finds files, folders and the well-known
11/// folders by path.
12pub struct NoopStorageProvider;
13
14fn ready<T: 'static>(value: T) -> LocalBoxFuture<T> {
15    Box::pin(std::future::ready(value))
16}
17
18impl NoopStorageProvider {
19    fn open_file_picker_with_result() -> LocalBoxFuture<std::io::Result<OpenFilePickerResult>> {
20        ready(Ok(OpenFilePickerResult::default()))
21    }
22
23    fn save_file_picker_with_result() -> LocalBoxFuture<std::io::Result<SaveFilePickerResult>> {
24        ready(Ok(SaveFilePickerResult::default()))
25    }
26
27    fn open_folder_picker() -> LocalBoxFuture<std::io::Result<Vec<Rc<dyn IStorageFolder>>>> {
28        ready(Ok(Vec::new()))
29    }
30}
31
32#[cfg(not(target_arch = "wasm32"))]
33impl super::file_io::BclStorageProvider for NoopStorageProvider {
34    fn can_open(&self) -> bool {
35        false
36    }
37
38    fn open_file_picker_with_result_async(
39        &self,
40        _options: FilePickerOpenOptions,
41    ) -> LocalBoxFuture<std::io::Result<OpenFilePickerResult>> {
42        Self::open_file_picker_with_result()
43    }
44
45    fn can_save(&self) -> bool {
46        false
47    }
48
49    fn save_file_picker_with_result_async(
50        &self,
51        _options: FilePickerSaveOptions,
52    ) -> LocalBoxFuture<std::io::Result<SaveFilePickerResult>> {
53        Self::save_file_picker_with_result()
54    }
55
56    fn can_pick_folder(&self) -> bool {
57        false
58    }
59
60    fn open_folder_picker_async(
61        &self,
62        _options: FolderPickerOpenOptions,
63    ) -> LocalBoxFuture<std::io::Result<Vec<Rc<dyn IStorageFolder>>>> {
64        Self::open_folder_picker()
65    }
66}
67
68/// Without a local file system (the browser) nothing is found.
69#[cfg(target_arch = "wasm32")]
70impl super::IStorageProvider for NoopStorageProvider {
71    fn can_open(&self) -> bool {
72        false
73    }
74
75    fn open_file_picker_async(
76        &self,
77        _options: FilePickerOpenOptions,
78    ) -> LocalBoxFuture<std::io::Result<Vec<Rc<dyn super::IStorageFile>>>> {
79        ready(Ok(Vec::new()))
80    }
81
82    fn open_file_picker_with_result_async(
83        &self,
84        _options: FilePickerOpenOptions,
85    ) -> LocalBoxFuture<std::io::Result<OpenFilePickerResult>> {
86        Self::open_file_picker_with_result()
87    }
88
89    fn can_save(&self) -> bool {
90        false
91    }
92
93    fn save_file_picker_async(
94        &self,
95        _options: FilePickerSaveOptions,
96    ) -> LocalBoxFuture<std::io::Result<Option<Rc<dyn super::IStorageFile>>>> {
97        ready(Ok(None))
98    }
99
100    fn save_file_picker_with_result_async(
101        &self,
102        _options: FilePickerSaveOptions,
103    ) -> LocalBoxFuture<std::io::Result<SaveFilePickerResult>> {
104        Self::save_file_picker_with_result()
105    }
106
107    fn can_pick_folder(&self) -> bool {
108        false
109    }
110
111    fn open_folder_picker_async(
112        &self,
113        _options: FolderPickerOpenOptions,
114    ) -> LocalBoxFuture<std::io::Result<Vec<Rc<dyn IStorageFolder>>>> {
115        Self::open_folder_picker()
116    }
117
118    fn open_file_bookmark_async(&self, _bookmark: &str) -> LocalBoxFuture<Option<Rc<dyn super::IStorageBookmarkFile>>> {
119        ready(None)
120    }
121
122    fn open_folder_bookmark_async(
123        &self,
124        _bookmark: &str,
125    ) -> LocalBoxFuture<Option<Rc<dyn super::IStorageBookmarkFolder>>> {
126        ready(None)
127    }
128
129    fn try_get_file_from_path_async(
130        &self,
131        _file_path: &crate::utilities::Uri,
132    ) -> LocalBoxFuture<Option<Rc<dyn super::IStorageFile>>> {
133        ready(None)
134    }
135
136    fn try_get_folder_from_path_async(
137        &self,
138        _folder_path: &crate::utilities::Uri,
139    ) -> LocalBoxFuture<Option<Rc<dyn IStorageFolder>>> {
140        ready(None)
141    }
142
143    fn try_get_well_known_folder_async(
144        &self,
145        _well_known_folder: super::WellKnownFolder,
146    ) -> LocalBoxFuture<Option<Rc<dyn IStorageFolder>>> {
147        ready(None)
148    }
149}
ferroui_base/platform/storage/noop_storage_provider.rs

ferroui_base/platform/storage/
noop_storage_provider.rs
