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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "chrome/browser/chromeos/extensions/file_manager/open_util.h" | |
6 | |
7 #include "base/bind.h" | |
8 #include "base/files/file_path.h" | |
9 #include "base/logging.h" | |
10 #include "base/strings/utf_string_conversions.h" | |
11 #include "chrome/browser/chromeos/extensions/file_manager/app_id.h" | |
12 #include "chrome/browser/chromeos/extensions/file_manager/file_browser_handlers.
h" | |
13 #include "chrome/browser/chromeos/extensions/file_manager/file_tasks.h" | |
14 #include "chrome/browser/chromeos/extensions/file_manager/fileapi_util.h" | |
15 #include "chrome/browser/chromeos/extensions/file_manager/mime_util.h" | |
16 #include "chrome/browser/chromeos/extensions/file_manager/url_util.h" | |
17 #include "chrome/browser/extensions/api/file_handlers/app_file_handler_util.h" | |
18 #include "chrome/browser/extensions/extension_service.h" | |
19 #include "chrome/browser/extensions/extension_system.h" | |
20 #include "chrome/browser/google_apis/task_util.h" | |
21 #include "chrome/browser/profiles/profile.h" | |
22 #include "chrome/browser/profiles/profile_manager.h" | |
23 #include "chrome/browser/ui/browser.h" | |
24 #include "chrome/browser/ui/browser_finder.h" | |
25 #include "chrome/browser/ui/browser_tabstrip.h" | |
26 #include "chrome/browser/ui/browser_window.h" | |
27 #include "chrome/browser/ui/extensions/application_launch.h" | |
28 #include "chrome/browser/ui/simple_message_box.h" | |
29 #include "chrome/common/extensions/api/file_browser_handlers/file_browser_handle
r.h" | |
30 #include "content/public/browser/browser_thread.h" | |
31 #include "content/public/browser/storage_partition.h" | |
32 #include "content/public/browser/user_metrics.h" | |
33 #include "grit/generated_resources.h" | |
34 #include "ui/base/l10n/l10n_util.h" | |
35 #include "webkit/browser/fileapi/file_system_backend.h" | |
36 #include "webkit/browser/fileapi/file_system_context.h" | |
37 #include "webkit/browser/fileapi/file_system_operation_runner.h" | |
38 #include "webkit/browser/fileapi/file_system_url.h" | |
39 | |
40 using content::BrowserContext; | |
41 using content::BrowserThread; | |
42 using content::UserMetricsAction; | |
43 using extensions::Extension; | |
44 using extensions::app_file_handler_util::FindFileHandlersForFiles; | |
45 using extensions::app_file_handler_util::PathAndMimeTypeSet; | |
46 using fileapi::FileSystemURL; | |
47 | |
48 namespace file_manager { | |
49 namespace util { | |
50 namespace { | |
51 | |
52 // Shows a warning message box saying that the file could not be opened. | |
53 void ShowWarningMessageBox(Profile* profile, const base::FilePath& file_path) { | |
54 // TODO: if FindOrCreateTabbedBrowser creates a new browser the returned | |
55 // browser is leaked. | |
56 Browser* browser = | |
57 chrome::FindOrCreateTabbedBrowser(profile, | |
58 chrome::HOST_DESKTOP_TYPE_ASH); | |
59 chrome::ShowMessageBox( | |
60 browser->window()->GetNativeWindow(), | |
61 l10n_util::GetStringFUTF16( | |
62 IDS_FILE_BROWSER_ERROR_VIEWING_FILE_TITLE, | |
63 UTF8ToUTF16(file_path.BaseName().value())), | |
64 l10n_util::GetStringUTF16(IDS_FILE_BROWSER_ERROR_VIEWING_FILE), | |
65 chrome::MESSAGE_BOX_TYPE_WARNING); | |
66 } | |
67 | |
68 // Grants file system access to the file manager. | |
69 bool GrantFileSystemAccessToFileBrowser(Profile* profile) { | |
70 // The file manager always runs in the site for its extension id, so that | |
71 // is the site for which file access permissions should be granted. | |
72 fileapi::ExternalFileSystemBackend* backend = | |
73 GetFileSystemContextForExtensionId( | |
74 profile, kFileManagerAppId)->external_backend(); | |
75 if (!backend) | |
76 return false; | |
77 backend->GrantFullAccessToExtension(kFileManagerAppId); | |
78 return true; | |
79 } | |
80 | |
81 // Executes the |task| for the file specified by |url|. | |
82 void ExecuteFileTaskForUrl(Profile* profile, | |
83 const file_tasks::TaskDescriptor& task, | |
84 const GURL& url) { | |
85 // If the file manager has not been open yet then it did not request access | |
86 // to the file system. Do it now. | |
87 if (!GrantFileSystemAccessToFileBrowser(profile)) | |
88 return; | |
89 | |
90 fileapi::FileSystemContext* file_system_context = | |
91 GetFileSystemContextForExtensionId( | |
92 profile, kFileManagerAppId); | |
93 | |
94 // We are executing the task on behalf of the file manager. | |
95 const GURL source_url = GetFileManagerMainPageUrl(); | |
96 std::vector<FileSystemURL> urls; | |
97 urls.push_back(file_system_context->CrackURL(url)); | |
98 | |
99 file_tasks::ExecuteFileTask( | |
100 profile, | |
101 source_url, | |
102 kFileManagerAppId, | |
103 0, // no tab id | |
104 task, | |
105 urls, | |
106 file_tasks::FileTaskFinishedCallback()); | |
107 } | |
108 | |
109 // Opens the file manager for the specified |file_path|. Used to implement | |
110 // internal handlers of special action IDs: | |
111 // | |
112 // "open" - Open the file manager for the given folder. | |
113 // "auto-open" - Open the file manager for the given removal drive and close | |
114 // the file manager when the removal drive is unmounted. | |
115 // "select" - Open the file manager for the given file. The folder containing | |
116 // the file will be opened with the file selected. | |
117 void OpenFileManagerWithInternalActionId(const base::FilePath& file_path, | |
118 const std::string& action_id) { | |
119 DCHECK(action_id == "auto-open" || | |
120 action_id == "open" || | |
121 action_id == "select"); | |
122 | |
123 content::RecordAction(UserMetricsAction("ShowFileBrowserFullTab")); | |
124 Profile* profile = ProfileManager::GetDefaultProfileOrOffTheRecord(); | |
125 | |
126 GURL url; | |
127 if (!ConvertAbsoluteFilePathToFileSystemUrl( | |
128 profile, file_path, kFileManagerAppId, &url)) | |
129 return; | |
130 | |
131 file_tasks::TaskDescriptor task(kFileManagerAppId, | |
132 file_tasks::TASK_TYPE_FILE_BROWSER_HANDLER, | |
133 action_id); | |
134 ExecuteFileTaskForUrl(profile, task, url); | |
135 } | |
136 | |
137 // Opens the file specified by |file_path| and |url| with a file handler, | |
138 // preferably the default handler for the type of the file. Returns false if | |
139 // no file handler is found. | |
140 bool OpenFileWithFileHandler(Profile* profile, | |
141 const base::FilePath& file_path, | |
142 const GURL& url, | |
143 const std::string& mime_type, | |
144 const std::string& default_task_id) { | |
145 ExtensionService* service = profile->GetExtensionService(); | |
146 if (!service) | |
147 return false; | |
148 | |
149 PathAndMimeTypeSet files; | |
150 files.insert(std::make_pair(file_path, mime_type)); | |
151 const extensions::FileHandlerInfo* first_handler = NULL; | |
152 const extensions::Extension* extension_for_first_handler = NULL; | |
153 | |
154 // If we find the default handler, we execute it immediately, but otherwise, | |
155 // we remember the first handler, and if there was no default handler, simply | |
156 // execute the first one. | |
157 for (ExtensionSet::const_iterator iter = service->extensions()->begin(); | |
158 iter != service->extensions()->end(); | |
159 ++iter) { | |
160 const Extension* extension = iter->get(); | |
161 | |
162 // We don't support using hosted apps to open files. | |
163 if (!extension->is_platform_app()) | |
164 continue; | |
165 | |
166 // We only support apps that specify "incognito: split" if in incognito | |
167 // mode. | |
168 if (profile->IsOffTheRecord() && | |
169 !service->IsIncognitoEnabled(extension->id())) | |
170 continue; | |
171 | |
172 typedef std::vector<const extensions::FileHandlerInfo*> FileHandlerList; | |
173 FileHandlerList file_handlers = FindFileHandlersForFiles(*extension, files); | |
174 for (FileHandlerList::iterator i = file_handlers.begin(); | |
175 i != file_handlers.end(); ++i) { | |
176 const extensions::FileHandlerInfo* handler = *i; | |
177 std::string task_id = file_tasks::MakeTaskID( | |
178 extension->id(), | |
179 file_tasks::TASK_TYPE_FILE_HANDLER, | |
180 handler->id); | |
181 if (task_id == default_task_id) { | |
182 file_tasks::TaskDescriptor task(extension->id(), | |
183 file_tasks::TASK_TYPE_FILE_HANDLER, | |
184 handler->id); | |
185 ExecuteFileTaskForUrl(profile, task, url); | |
186 return true; | |
187 | |
188 } else if (!first_handler) { | |
189 first_handler = handler; | |
190 extension_for_first_handler = extension; | |
191 } | |
192 } | |
193 } | |
194 if (first_handler) { | |
195 file_tasks::TaskDescriptor task(extension_for_first_handler->id(), | |
196 file_tasks::TASK_TYPE_FILE_HANDLER, | |
197 first_handler->id); | |
198 ExecuteFileTaskForUrl(profile, task, url); | |
199 return true; | |
200 } | |
201 return false; | |
202 } | |
203 | |
204 // Opens the file specified by |file_path| and |url| with the file browser | |
205 // handler specified by |handler|. Returns false if failed to open the file. | |
206 bool OpenFileWithFileBrowserHandler(Profile* profile, | |
207 const base::FilePath& file_path, | |
208 const FileBrowserHandler& handler, | |
209 const GURL& url) { | |
210 file_tasks::TaskDescriptor task(handler.extension_id(), | |
211 file_tasks::TASK_TYPE_FILE_BROWSER_HANDLER, | |
212 handler.id()); | |
213 ExecuteFileTaskForUrl(profile, task, url); | |
214 return true; | |
215 } | |
216 | |
217 // Opens the file specified by |file_path| with a handler (either of file | |
218 // browser handler or file handler, preferably the default handler for the | |
219 // type of the file), or opens the file with the browser. Returns false if | |
220 // failed to open the file. | |
221 bool OpenFileWithHandler(Profile* profile, const base::FilePath& file_path) { | |
222 GURL url; | |
223 if (!ConvertAbsoluteFilePathToFileSystemUrl( | |
224 profile, file_path, kFileManagerAppId, &url)) | |
225 return false; | |
226 | |
227 std::string mime_type = GetMimeTypeForPath(file_path); | |
228 std::string default_task_id = file_tasks::GetDefaultTaskIdFromPrefs( | |
229 *profile->GetPrefs(), mime_type, file_path.Extension()); | |
230 | |
231 // We choose the file handler from the following in decreasing priority or | |
232 // fail if none support the file type: | |
233 // 1. default file browser handler | |
234 // 2. default file handler | |
235 // 3. a fallback handler (e.g. opening in the browser) | |
236 // 4. non-default file handler | |
237 // 5. non-default file browser handler | |
238 // Note that there can be at most one of default extension and default app. | |
239 const FileBrowserHandler* handler = | |
240 file_browser_handlers::FindFileBrowserHandlerForURLAndPath( | |
241 profile, url, file_path); | |
242 if (!handler) { | |
243 return OpenFileWithFileHandler( | |
244 profile, file_path, url, mime_type, default_task_id); | |
245 } | |
246 | |
247 const file_tasks::TaskDescriptor task_descriptor( | |
248 handler->extension_id(), | |
249 file_tasks::TASK_TYPE_FILE_BROWSER_HANDLER, | |
250 handler->id()); | |
251 const std::string handler_task_id = | |
252 file_tasks::TaskDescriptorToId(task_descriptor); | |
253 if (handler_task_id != default_task_id && | |
254 !file_browser_handlers::IsFallbackFileBrowserHandler(task_descriptor) && | |
255 OpenFileWithFileHandler( | |
256 profile, file_path, url, mime_type, default_task_id)) { | |
257 return true; | |
258 } | |
259 return OpenFileWithFileBrowserHandler(profile, file_path, *handler, url); | |
260 } | |
261 | |
262 // Used to implement OpenItem(). | |
263 void ContinueOpenItem(Profile* profile, | |
264 const base::FilePath& file_path, | |
265 base::PlatformFileError error) { | |
266 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
267 | |
268 if (error == base::PLATFORM_FILE_OK) { | |
269 // A directory exists at |file_path|. Open it with the file manager. | |
270 OpenFileManagerWithInternalActionId(file_path, "open"); | |
271 } else { | |
272 // |file_path| should be a file. Open it with a handler. | |
273 if (!OpenFileWithHandler(profile, file_path)) | |
274 ShowWarningMessageBox(profile, file_path); | |
275 } | |
276 } | |
277 | |
278 // Used to implement CheckIfDirectoryExists(). | |
279 void CheckIfDirectoryExistsOnIOThread( | |
280 scoped_refptr<fileapi::FileSystemContext> file_system_context, | |
281 const GURL& url, | |
282 const fileapi::FileSystemOperationRunner::StatusCallback& callback) { | |
283 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
284 | |
285 fileapi::FileSystemURL file_system_url = file_system_context->CrackURL(url); | |
286 file_system_context->operation_runner()->DirectoryExists( | |
287 file_system_url, callback); | |
288 } | |
289 | |
290 // Checks if a directory exists at |url|. | |
291 void CheckIfDirectoryExists( | |
292 scoped_refptr<fileapi::FileSystemContext> file_system_context, | |
293 const GURL& url, | |
294 const fileapi::FileSystemOperationRunner::StatusCallback& callback) { | |
295 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
296 | |
297 BrowserThread::PostTask( | |
298 BrowserThread::IO, FROM_HERE, | |
299 base::Bind(&CheckIfDirectoryExistsOnIOThread, | |
300 file_system_context, | |
301 url, | |
302 google_apis::CreateRelayCallback(callback))); | |
303 } | |
304 | |
305 } // namespace | |
306 | |
307 void OpenRemovableDrive(const base::FilePath& file_path) { | |
308 OpenFileManagerWithInternalActionId(file_path, "auto-open"); | |
309 } | |
310 | |
311 void OpenItem(const base::FilePath& file_path) { | |
312 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
313 | |
314 Profile* profile = ProfileManager::GetDefaultProfileOrOffTheRecord(); | |
315 GURL url; | |
316 if (!ConvertAbsoluteFilePathToFileSystemUrl( | |
317 profile, file_path, kFileManagerAppId, &url) || | |
318 !GrantFileSystemAccessToFileBrowser(profile)) { | |
319 ShowWarningMessageBox(profile, file_path); | |
320 return; | |
321 } | |
322 | |
323 scoped_refptr<fileapi::FileSystemContext> file_system_context = | |
324 GetFileSystemContextForExtensionId( | |
325 profile, kFileManagerAppId); | |
326 | |
327 CheckIfDirectoryExists(file_system_context, url, | |
328 base::Bind(&ContinueOpenItem, profile, file_path)); | |
329 } | |
330 | |
331 void ShowItemInFolder(const base::FilePath& file_path) { | |
332 // This action changes the selection so we do not reuse existing tabs. | |
333 OpenFileManagerWithInternalActionId(file_path, "select"); | |
334 } | |
335 | |
336 } // namespace util | |
337 } // namespace file_manager | |
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