BlobRegistry no longer needs SessionIDs
[WebKit-https.git] / Source / WebCore / html / FileListCreator.cpp
1 /*
2  * Copyright (C) 2017 Apple Inc. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23  * THE POSSIBILITY OF SUCH DAMAGE.
24  */
25
26 #include "config.h"
27 #include "FileListCreator.h"
28
29 #include "FileChooser.h"
30 #include "FileList.h"
31 #include <wtf/CrossThreadCopier.h>
32 #include <wtf/FileMetadata.h>
33 #include <wtf/FileSystem.h>
34
35 namespace WebCore {
36
37 FileListCreator::~FileListCreator()
38 {
39     ASSERT(!m_completionHander);
40 }
41
42 static void appendDirectoryFiles(const String& directory, const String& relativePath, Vector<Ref<File>>& fileObjects)
43 {
44     for (auto& childPath : FileSystem::listDirectory(directory, "*")) {
45         auto metadata = FileSystem::fileMetadata(childPath);
46         if (!metadata)
47             continue;
48
49         if (metadata.value().isHidden)
50             continue;
51
52         String childRelativePath = relativePath + "/" + FileSystem::pathGetFileName(childPath);
53         if (metadata.value().type == FileMetadata::Type::Directory)
54             appendDirectoryFiles(childPath, childRelativePath, fileObjects);
55         else if (metadata.value().type == FileMetadata::Type::File)
56             fileObjects.append(File::createWithRelativePath(childPath, childRelativePath));
57     }
58 }
59
60 FileListCreator::FileListCreator(const Vector<FileChooserFileInfo>& paths, ShouldResolveDirectories shouldResolveDirectories, CompletionHandler&& completionHandler)
61 {
62     if (shouldResolveDirectories == ShouldResolveDirectories::No)
63         completionHandler(createFileList<ShouldResolveDirectories::No>(paths));
64     else {
65         // Resolve directories on a background thread to avoid blocking the main thread.
66         m_completionHander = WTFMove(completionHandler);
67         m_workQueue = WorkQueue::create("FileListCreator Work Queue");
68         m_workQueue->dispatch([this, protectedThis = makeRef(*this), paths = crossThreadCopy(paths)]() mutable {
69             auto fileList = createFileList<ShouldResolveDirectories::Yes>(paths);
70             callOnMainThread([this, protectedThis = WTFMove(protectedThis), fileList = WTFMove(fileList)]() mutable {
71                 if (auto completionHander = WTFMove(m_completionHander))
72                     completionHander(WTFMove(fileList));
73             });
74         });
75     }
76 }
77
78 template<FileListCreator::ShouldResolveDirectories shouldResolveDirectories>
79 Ref<FileList> FileListCreator::createFileList(const Vector<FileChooserFileInfo>& paths)
80 {
81     Vector<Ref<File>> fileObjects;
82     for (auto& info : paths) {
83         if (shouldResolveDirectories == ShouldResolveDirectories::Yes && FileSystem::fileIsDirectory(info.path, FileSystem::ShouldFollowSymbolicLinks::No))
84             appendDirectoryFiles(info.path, FileSystem::pathGetFileName(info.path), fileObjects);
85         else
86             fileObjects.append(File::create(info.path, info.displayName));
87     }
88     return FileList::create(WTFMove(fileObjects));
89 }
90
91 void FileListCreator::cancel()
92 {
93     m_completionHander = nullptr;
94     m_workQueue = nullptr;
95 }
96
97 } // namespace WebCore