cef/libcef/browser/native/file_dialog_runner_mac.mm

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// Copyright (c) 2012 The Chromium Embedded Framework Authors.
// Portions 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 "libcef/browser/native/file_dialog_runner_mac.h"
#import <Cocoa/Cocoa.h>
#import <CoreServices/CoreServices.h>
#include "libcef/browser/alloy/alloy_browser_host_impl.h"
#include "base/mac/mac_util.h"
#include "base/stl_util.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/sys_string_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "base/threading/thread_restrictions.h"
#include "cef/grit/cef_strings.h"
#include "chrome/grit/generated_resources.h"
#include "net/base/mime_util.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/strings/grit/ui_strings.h"
namespace {
std::u16string GetDescriptionFromMimeType(const std::string& mime_type) {
// Check for wild card mime types and return an appropriate description.
static const struct {
const char* mime_type;
int string_id;
} kWildCardMimeTypes[] = {
{"audio", IDS_AUDIO_FILES},
{"image", IDS_IMAGE_FILES},
{"text", IDS_TEXT_FILES},
{"video", IDS_VIDEO_FILES},
};
for (size_t i = 0; i < base::size(kWildCardMimeTypes); ++i) {
if (mime_type == std::string(kWildCardMimeTypes[i].mime_type) + "/*")
return l10n_util::GetStringUTF16(kWildCardMimeTypes[i].string_id);
}
return std::u16string();
}
void AddFilters(NSPopUpButton* button,
const std::vector<std::u16string>& accept_filters,
bool include_all_files,
std::vector<std::vector<std::u16string>>* all_extensions) {
for (size_t i = 0; i < accept_filters.size(); ++i) {
const std::u16string& filter = accept_filters[i];
if (filter.empty())
continue;
std::vector<std::u16string> extensions;
std::u16string description;
size_t sep_index = filter.find('|');
if (sep_index != std::string::npos) {
// Treat as a filter of the form "Filter Name|.ext1;.ext2;.ext3".
description = filter.substr(0, sep_index);
const std::vector<std::u16string>& ext =
base::SplitString(filter.substr(sep_index + 1), u";",
base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
for (size_t x = 0; x < ext.size(); ++x) {
const std::u16string& file_ext = ext[x];
if (!file_ext.empty() && file_ext[0] == '.')
extensions.push_back(file_ext);
}
} else if (filter[0] == '.') {
// Treat as an extension beginning with the '.' character.
extensions.push_back(filter);
} else {
// Otherwise convert mime type to one or more extensions.
const std::string& ascii = base::UTF16ToASCII(filter);
std::vector<base::FilePath::StringType> ext;
net::GetExtensionsForMimeType(ascii, &ext);
if (!ext.empty()) {
for (size_t x = 0; x < ext.size(); ++x)
extensions.push_back(u"." + base::ASCIIToUTF16(ext[x]));
description = GetDescriptionFromMimeType(ascii);
}
}
if (extensions.empty())
continue;
// Don't display a crazy number of extensions since the NSPopUpButton width
// will keep growing.
const size_t kMaxExtensions = 10;
std::u16string ext_str;
for (size_t x = 0; x < std::min(kMaxExtensions, extensions.size()); ++x) {
const std::u16string& pattern = u"*" + extensions[x];
if (x != 0)
ext_str += u";";
ext_str += pattern;
}
if (extensions.size() > kMaxExtensions)
ext_str += u";...";
if (description.empty()) {
description = ext_str;
} else {
description += u" (" + ext_str + u")";
}
[button addItemWithTitle:base::SysUTF16ToNSString(description)];
all_extensions->push_back(extensions);
}
// Add the *.* filter, but only if we have added other filters (otherwise it
// is implied).
if (include_all_files && !all_extensions->empty()) {
[button addItemWithTitle:base::SysUTF8ToNSString("All Files (*)")];
all_extensions->push_back(std::vector<std::u16string>());
}
}
} // namespace
// Used to manage the file type filter in the NSSavePanel/NSOpenPanel.
@interface CefFilterDelegate : NSObject {
@private
NSSavePanel* panel_;
std::vector<std::vector<std::u16string>> extensions_;
int selected_index_;
}
- (id)initWithPanel:(NSSavePanel*)panel
andAcceptFilters:(const std::vector<std::u16string>&)accept_filters
andFilterIndex:(int)index;
- (void)setFilter:(int)index;
- (int)filter;
- (void)filterSelectionChanged:(id)sender;
- (void)setFileExtension;
@end
@implementation CefFilterDelegate
- (id)initWithPanel:(NSSavePanel*)panel
andAcceptFilters:(const std::vector<std::u16string>&)accept_filters
andFilterIndex:(int)index {
if (self = [super init]) {
DCHECK(panel);
panel_ = panel;
selected_index_ = 0;
NSPopUpButton* button = [[NSPopUpButton alloc] init];
AddFilters(button, accept_filters, true, &extensions_);
[button sizeToFit];
[button setTarget:self];
[button setAction:@selector(filterSelectionChanged:)];
if (index < static_cast<int>(extensions_.size())) {
[button selectItemAtIndex:index];
[self setFilter:index];
}
[panel_ setAccessoryView:button];
}
return self;
}
// Set the current filter index.
- (void)setFilter:(int)index {
DCHECK(index >= 0 && index < static_cast<int>(extensions_.size()));
selected_index_ = index;
// Set the selectable file types. For open panels this limits the files that
// can be selected. For save panels this applies a default file extenion when
// the dialog is dismissed if none is already provided.
NSMutableArray* acceptArray = nil;
if (!extensions_[index].empty()) {
acceptArray = [[NSMutableArray alloc] init];
for (size_t i = 0; i < extensions_[index].size(); ++i) {
[acceptArray
addObject:base::SysUTF16ToNSString(extensions_[index][i].substr(1))];
}
}
[panel_ setAllowedFileTypes:acceptArray];
if (![panel_ isKindOfClass:[NSOpenPanel class]]) {
// For save panels set the file extension.
[self setFileExtension];
}
}
// Returns the current filter index.
- (int)filter {
return selected_index_;
}
// Called when the selected filter is changed via the NSPopUpButton.
- (void)filterSelectionChanged:(id)sender {
NSPopUpButton* button = (NSPopUpButton*)sender;
[self setFilter:[button indexOfSelectedItem]];
}
// Set the extension on the currently selected file name.
- (void)setFileExtension {
const std::vector<std::u16string>& filter = extensions_[selected_index_];
if (filter.empty()) {
// All extensions are allowed so don't change anything.
return;
}
base::FilePath path(base::SysNSStringToUTF8([panel_ nameFieldStringValue]));
// If the file name currently includes an extension from |filter| then don't
// change anything.
std::u16string extension = base::UTF8ToUTF16(path.Extension());
if (!extension.empty()) {
for (size_t i = 0; i < filter.size(); ++i) {
if (filter[i] == extension)
return;
}
}
// Change the extension to the first value in |filter|.
path = path.ReplaceExtension(base::UTF16ToUTF8(filter[0]));
[panel_ setNameFieldStringValue:base::SysUTF8ToNSString(path.value())];
}
@end
CefFileDialogRunnerMac::CefFileDialogRunnerMac() : weak_ptr_factory_(this) {}
void CefFileDialogRunnerMac::Run(AlloyBrowserHostImpl* browser,
const FileChooserParams& params,
RunFileChooserCallback callback) {
callback_ = std::move(callback);
int filter_index = params.selected_accept_filter;
NSView* owner = CAST_CEF_WINDOW_HANDLE_TO_NSVIEW(browser->GetWindowHandle());
auto weak_this = weak_ptr_factory_.GetWeakPtr();
if (params.mode == blink::mojom::FileChooserParams::Mode::kOpen ||
params.mode == blink::mojom::FileChooserParams::Mode::kOpenMultiple ||
params.mode == blink::mojom::FileChooserParams::Mode::kUploadFolder) {
RunOpenFileDialog(weak_this, params, owner, filter_index);
} else if (params.mode == blink::mojom::FileChooserParams::Mode::kSave) {
RunSaveFileDialog(weak_this, params, owner, filter_index);
} else {
NOTIMPLEMENTED();
}
}
// static
void CefFileDialogRunnerMac::RunOpenFileDialog(
base::WeakPtr<CefFileDialogRunnerMac> weak_this,
const CefFileDialogRunner::FileChooserParams& params,
NSView* view,
int filter_index) {
NSOpenPanel* openPanel = [NSOpenPanel openPanel];
std::u16string title;
if (!params.title.empty()) {
title = params.title;
} else {
title = l10n_util::GetStringUTF16(
params.mode == blink::mojom::FileChooserParams::Mode::kOpen
? IDS_OPEN_FILE_DIALOG_TITLE
: (params.mode ==
blink::mojom::FileChooserParams::Mode::kOpenMultiple
? IDS_OPEN_FILES_DIALOG_TITLE
: IDS_SELECT_FOLDER_DIALOG_TITLE));
}
[openPanel setTitle:base::SysUTF16ToNSString(title)];
std::string filename, directory;
if (!params.default_file_name.empty()) {
if (params.mode == blink::mojom::FileChooserParams::Mode::kUploadFolder ||
params.default_file_name.EndsWithSeparator()) {
// The value is only a directory.
directory = params.default_file_name.value();
} else {
// The value is a file name and possibly a directory.
filename = params.default_file_name.BaseName().value();
directory = params.default_file_name.DirName().value();
}
}
if (!filename.empty()) {
[openPanel setNameFieldStringValue:base::SysUTF8ToNSString(filename)];
}
if (!directory.empty()) {
[openPanel setDirectoryURL:[NSURL fileURLWithPath:base::SysUTF8ToNSString(
directory)]];
}
CefFilterDelegate* filter_delegate = nil;
if (params.mode != blink::mojom::FileChooserParams::Mode::kUploadFolder &&
!params.accept_types.empty()) {
// Add the file filter control.
filter_delegate =
[[CefFilterDelegate alloc] initWithPanel:openPanel
andAcceptFilters:params.accept_types
andFilterIndex:filter_index];
}
// Further panel configuration.
[openPanel setAllowsOtherFileTypes:YES];
[openPanel setAllowsMultipleSelection:
(params.mode ==
blink::mojom::FileChooserParams::Mode::kOpenMultiple)];
[openPanel
setCanChooseFiles:(params.mode !=
blink::mojom::FileChooserParams::Mode::kUploadFolder)];
[openPanel
setCanChooseDirectories:(params.mode == blink::mojom::FileChooserParams::
Mode::kUploadFolder)];
[openPanel setShowsHiddenFiles:!params.hidereadonly];
// Show panel.
[openPanel
beginSheetModalForWindow:[view window]
completionHandler:^(NSInteger returnCode) {
int filter_index_to_use = (filter_delegate != nil)
? [filter_delegate filter]
: filter_index;
if (returnCode == NSFileHandlingPanelOKButton) {
std::vector<base::FilePath> files;
files.reserve(openPanel.URLs.count);
for (NSURL* url in openPanel.URLs) {
if (url.isFileURL)
files.push_back(base::FilePath(url.path.UTF8String));
}
std::move(weak_this->callback_)
.Run(filter_index_to_use, files);
} else {
std::move(weak_this->callback_)
.Run(filter_index_to_use, std::vector<base::FilePath>());
}
}];
}
// static
void CefFileDialogRunnerMac::RunSaveFileDialog(
base::WeakPtr<CefFileDialogRunnerMac> weak_this,
const CefFileDialogRunner::FileChooserParams& params,
NSView* view,
int filter_index) {
NSSavePanel* savePanel = [NSSavePanel savePanel];
std::u16string title;
if (!params.title.empty())
title = params.title;
else
title = l10n_util::GetStringUTF16(IDS_SAVE_AS_DIALOG_TITLE);
[savePanel setTitle:base::SysUTF16ToNSString(title)];
std::string filename, directory;
if (!params.default_file_name.empty()) {
if (params.default_file_name.EndsWithSeparator()) {
// The value is only a directory.
directory = params.default_file_name.value();
} else {
// The value is a file name and possibly a directory.
filename = params.default_file_name.BaseName().value();
directory = params.default_file_name.DirName().value();
}
}
if (!filename.empty()) {
[savePanel setNameFieldStringValue:base::SysUTF8ToNSString(filename)];
}
if (!directory.empty()) {
[savePanel setDirectoryURL:[NSURL fileURLWithPath:base::SysUTF8ToNSString(
directory)]];
}
CefFilterDelegate* filter_delegate = nil;
if (!params.accept_types.empty()) {
// Add the file filter control.
filter_delegate =
[[CefFilterDelegate alloc] initWithPanel:savePanel
andAcceptFilters:params.accept_types
andFilterIndex:filter_index];
}
[savePanel setAllowsOtherFileTypes:YES];
[savePanel setShowsHiddenFiles:!params.hidereadonly];
// Show panel.
[savePanel
beginSheetModalForWindow:view.window
completionHandler:^(NSInteger resultCode) {
int filter_index_to_use = (filter_delegate != nil)
? [filter_delegate filter]
: filter_index;
if (resultCode == NSFileHandlingPanelOKButton) {
NSURL* url = savePanel.URL;
const char* path = url.path.UTF8String;
std::vector<base::FilePath> files(1, base::FilePath(path));
std::move(weak_this->callback_)
.Run(filter_index_to_use, files);
} else {
std::move(weak_this->callback_)
.Run(filter_index_to_use, std::vector<base::FilePath>());
}
}];
}