Files.app: Add an private API to get a download URL

chrome/browser/chromeos/drive/file_system.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/drive/file_system.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/chromeos/drive/change_list_loader.h"
@@ skipping 675 matching lines @@
   }
   DCHECK(about_resource);
 
   callback.Run(FILE_ERROR_OK,
                about_resource->quota_bytes_total(),
                about_resource->quota_bytes_used());
 }
 
 void FileSystem::GetShareUrl(const base::FilePath& file_path,
                              const GURL& embed_origin,
-                             const GetShareUrlCallback& callback) {
+                             const GetUrlCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
   // Resolve the resource id.
   ResourceEntry* entry = new ResourceEntry;
   base::PostTaskAndReplyWithResult(
       blocking_task_runner_.get(),
       FROM_HERE,
       base::Bind(&internal::ResourceMetadata::GetResourceEntryByPath,
                  base::Unretained(resource_metadata_),
                  file_path,
                  entry),
       base::Bind(&FileSystem::GetShareUrlAfterGetResourceEntry,
                  weak_ptr_factory_.GetWeakPtr(),
                  file_path,
                  embed_origin,
                  callback,
                  base::Owned(entry)));
 }
 
 void FileSystem::GetShareUrlAfterGetResourceEntry(
     const base::FilePath& file_path,
     const GURL& embed_origin,
-    const GetShareUrlCallback& callback,
+    const GetUrlCallback& callback,
     ResourceEntry* entry,
     FileError error) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
   if (error != FILE_ERROR_OK) {
     callback.Run(error, GURL());
     return;
   }
   if (entry->resource_id().empty()) {
     // This entry does not exist on the server. Just return.
     callback.Run(FILE_ERROR_FAILED, GURL());
     return;
   }
 
   scheduler_->GetShareUrl(
       entry->resource_id(),
       embed_origin,
       ClientContext(USER_INITIATED),
       base::Bind(&FileSystem::OnGetResourceEntryForGetShareUrl,
                  weak_ptr_factory_.GetWeakPtr(),
                  callback));
 }
 
 void FileSystem::OnGetResourceEntryForGetShareUrl(
-    const GetShareUrlCallback& callback,
+    const GetUrlCallback& callback,
     google_apis::GDataErrorCode status,
     const GURL& share_url) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
   FileError error = GDataToFileError(status);
   if (error != FILE_ERROR_OK) {
     callback.Run(error, GURL());
     return;
   }
 
   if (share_url.is_empty()) {
     callback.Run(FILE_ERROR_FAILED, GURL());
     return;
   }
 
   callback.Run(FILE_ERROR_OK, share_url);
 }
 
+void FileSystem::GetDownloadUrl(const base::FilePath& file_path,
+                                const GetUrlCallback& callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(!callback.is_null());
+
+  // Resolve the resource id.
+  ResourceEntry* entry = new ResourceEntry;
+  base::PostTaskAndReplyWithResult(
+      blocking_task_runner_.get(),
+      FROM_HERE,
+      base::Bind(&internal::ResourceMetadata::GetResourceEntryByPath,
+                 base::Unretained(resource_metadata_),
+                 file_path,
+                 entry),
+      base::Bind(&FileSystem::GetDownloadUrlAfterGetResourceEntry,
+                 weak_ptr_factory_.GetWeakPtr(),
+                 file_path,
+                 callback,
+                 base::Owned(entry)));
+}
+
+void FileSystem::GetDownloadUrlAfterGetResourceEntry(
+    const base::FilePath& file_path,
+    const GetUrlCallback& callback,
+    ResourceEntry* entry,
+    FileError error) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(!callback.is_null());
+
+  if (error != FILE_ERROR_OK) {
+    callback.Run(error, GURL());
+    return;
+  }
+  if (entry->resource_id().empty()) {
+    // This entry does not exist on the server. Just return.
+    callback.Run(FILE_ERROR_FAILED, GURL());
+    return;
+  }
+
+  scheduler_->GetFileResource(
+      entry->resource_id(),
+      base::Bind(&FileSystem::OnGetFileResourceForGetDownloadUrl,
+                 weak_ptr_factory_.GetWeakPtr(),
+                 callback));
+}
+
+void FileSystem::OnGetFileResourceForGetDownloadUrl(
+    const GetUrlCallback& callback,
+    google_apis::GDataErrorCode status,
+    scoped_ptr<google_apis::FileResource> file_resource) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(!callback.is_null());
+
+  FileError error = GDataToFileError(status);
+  if (error != FILE_ERROR_OK) {
+    callback.Run(error, GURL());
+    return;
+  }
+
+  if (file_resource->download_url().is_empty()) {
+    callback.Run(FILE_ERROR_FAILED, GURL());
+    return;
+  }
+
+  callback.Run(FILE_ERROR_OK, file_resource->download_url());
+}
+
 void FileSystem::Search(const std::string& search_query,
                         const GURL& next_link,
                         const SearchCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
   search_operation_->Search(search_query, next_link, callback);
 }
 
 void FileSystem::SearchMetadata(const std::string& query,
                                 int options,
@@ skipping 208 matching lines @@
       FROM_HERE,
       base::Bind(&GetPathFromResourceIdOnBlockingPool,
                  resource_metadata_,
                  resource_id,
                  file_path),
       base::Bind(&GetPathFromResourceIdAfterGetPath,
                  base::Owned(file_path),
                  callback));
 }
 }  // namespace drive