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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/shell_dialogs/select_file_dialog_ios.h"
#import <UIKit/UIDocumentPickerViewController.h>
#import <UIKit/UIKit.h>
#import <UniformTypeIdentifiers/UniformTypeIdentifiers.h>
#include <algorithm>
#include "base/apple/foundation_util.h"
#include "base/memory/weak_ptr.h"
#include "base/notreached.h"
#include "base/strings/sys_string_conversions.h"
#include "ui/shell_dialogs/select_file_policy.h"
#include "ui/shell_dialogs/selected_file_info.h"
@interface NativeFileDialog : NSObject <UIDocumentPickerDelegate> {
@private
base::WeakPtr<ui::SelectFileDialogImpl> _dialog;
UIViewController* __weak _viewController;
bool _allowMultipleFiles;
UIDocumentPickerViewController* __strong _documentPickerController;
NSArray<UTType*>* __strong _fileUTTypeLists;
bool _allowsOtherFileTypes;
bool _isDirectory;
}
- (instancetype)initWithDialog:(base::WeakPtr<ui::SelectFileDialogImpl>)dialog
viewController:(UIViewController*)viewController
allowMultipleFiles:(bool)allowMultipleFiles
fileUTTypeLists:(NSArray<UTType*>*)fileUTTypeLists
allowsOtherFileTypes:(bool)allowsOtherFileTypes
isDirectory:(bool)isDirectory;
- (void)dealloc;
- (void)showFilePickerMenu;
- (void)documentPicker:(UIDocumentPickerViewController*)controller
didPickDocumentsAtURLs:(NSArray<NSURL*>*)urls;
- (void)documentPickerWasCancelled:(UIDocumentPickerViewController*)controller;
@end
@implementation NativeFileDialog
- (instancetype)initWithDialog:(base::WeakPtr<ui::SelectFileDialogImpl>)dialog
viewController:(UIViewController*)viewController
allowMultipleFiles:(bool)allowMultipleFiles
fileUTTypeLists:(NSArray<UTType*>*)fileUTTypeLists
allowsOtherFileTypes:(bool)allowsOtherFileTypes
isDirectory:(bool)isDirectory {
if (!(self = [super init])) {
return nil;
}
_dialog = dialog;
_viewController = viewController;
_allowMultipleFiles = allowMultipleFiles;
_fileUTTypeLists = fileUTTypeLists;
_allowsOtherFileTypes = allowsOtherFileTypes;
_isDirectory = isDirectory;
return self;
}
- (void)dealloc {
_documentPickerController.delegate = nil;
}
- (void)showFilePickerMenu {
NSArray* documentTypes = _isDirectory ? @[ UTTypeFolder ] : @[ UTTypeItem ];
if (!_isDirectory && !_allowsOtherFileTypes) {
documentTypes = _fileUTTypeLists;
}
_documentPickerController = [[UIDocumentPickerViewController alloc]
initForOpeningContentTypes:documentTypes];
_documentPickerController.allowsMultipleSelection = _allowMultipleFiles;
_documentPickerController.delegate = self;
UIViewController* currentViewController = _viewController;
[currentViewController presentViewController:_documentPickerController
animated:true
completion:nil];
}
- (void)documentPicker:(UIDocumentPickerViewController*)controller
didPickDocumentsAtURLs:(NSArray<NSURL*>*)urls {
if (!_dialog) {
return;
}
std::vector<base::FilePath> paths;
for (NSURL* url : urls) {
if (!url.isFileURL) {
continue;
}
NSString* path = url.path;
paths.push_back(base::apple::NSStringToFilePath(path));
}
_dialog->FileWasSelected(_allowMultipleFiles, false, paths, 0);
}
- (void)documentPickerWasCancelled:(UIDocumentPickerViewController*)controller {
if (!_dialog) {
return;
}
std::vector<base::FilePath> paths;
_dialog->FileWasSelected(_allowMultipleFiles, true, paths, 0);
}
@end
namespace ui {
SelectFileDialogImpl::SelectFileDialogImpl(
Listener* listener,
std::unique_ptr<ui::SelectFilePolicy> policy)
: SelectFileDialog(listener, std::move(policy)) {}
bool SelectFileDialogImpl::IsRunning(gfx::NativeWindow parent_window) const {
return listener_;
}
void SelectFileDialogImpl::ListenerDestroyed() {
listener_ = nullptr;
}
void SelectFileDialogImpl::FileWasSelected(
bool is_multi,
bool was_cancelled,
const std::vector<base::FilePath>& files,
int index) {
if (!listener_) {
return;
}
if (was_cancelled || files.empty()) {
listener_->FileSelectionCanceled();
} else {
if (is_multi) {
listener_->MultiFilesSelected(FilePathListToSelectedFileInfoList(files));
} else {
listener_->FileSelected(SelectedFileInfo(files[0]), index);
}
}
}
void SelectFileDialogImpl::SelectFileImpl(
SelectFileDialog::Type type,
const std::u16string& title,
const base::FilePath& default_path,
const FileTypeInfo* file_types,
int file_type_index,
const base::FilePath::StringType& default_extension,
gfx::NativeWindow gfx_window,
const GURL* caller) {
has_multiple_file_type_choices_ =
SelectFileDialog::SELECT_OPEN_MULTI_FILE == type;
bool allows_other_file_types = false;
bool directory = SelectFileDialog::SELECT_FOLDER == type ||
SelectFileDialog::SELECT_UPLOAD_FOLDER == type ||
SelectFileDialog::SELECT_EXISTING_FOLDER == type;
NSMutableArray<UTType*>* file_uttype_lists = [NSMutableArray array];
for (const auto& ext_list : file_types->extensions) {
for (const base::FilePath::StringType& ext : ext_list) {
UTType* uttype =
[UTType typeWithFilenameExtension:base::SysUTF8ToNSString(ext)];
if (!uttype) {
continue;
}
if (![file_uttype_lists containsObject:uttype]) {
[file_uttype_lists addObject:uttype];
}
}
}
if (file_types->include_all_files || file_types->extensions.empty()) {
allows_other_file_types = true;
}
UIViewController* controller = gfx_window.Get().rootViewController;
native_file_dialog_ =
[[NativeFileDialog alloc] initWithDialog:weak_factory_.GetWeakPtr()
viewController:controller
allowMultipleFiles:has_multiple_file_type_choices_
fileUTTypeLists:file_uttype_lists
allowsOtherFileTypes:allows_other_file_types
isDirectory:directory];
[native_file_dialog_ showFilePickerMenu];
}
SelectFileDialogImpl::~SelectFileDialogImpl() {
// Clear |weak_factory_| beforehand, to ensure that no callbacks will be made
// when we cancel the NSSavePanels.
weak_factory_.InvalidateWeakPtrs();
}
bool SelectFileDialogImpl::HasMultipleFileTypeChoicesImpl() {
return has_multiple_file_type_choices_;
}
SelectFileDialog* CreateSelectFileDialog(
SelectFileDialog::Listener* listener,
std::unique_ptr<SelectFilePolicy> policy) {
return new SelectFileDialogImpl(listener, std::move(policy));
}
} // namespace ui
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