electron/atom/browser/ui/file_dialog_mac.mm
2018-04-20 11:47:04 -07:00

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// Copyright (c) 2013 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "atom/browser/ui/file_dialog.h"
#import <Cocoa/Cocoa.h>
#import <CoreServices/CoreServices.h>
#include "atom/browser/native_window.h"
#include "base/files/file_util.h"
#include "base/mac/foundation_util.h"
#include "base/mac/mac_util.h"
#include "base/mac/scoped_cftyperef.h"
#include "base/strings/sys_string_conversions.h"
@interface PopUpButtonHandler : NSObject
@property(nonatomic, assign) NSSavePanel* savePanel;
@property(nonatomic, strong) NSArray* fileTypesList;
- (instancetype)initWithPanel:(NSSavePanel*)panel
andTypesList:(NSArray*)typesList;
- (void)selectFormat:(id)sender;
@end
@implementation PopUpButtonHandler
@synthesize savePanel;
@synthesize fileTypesList;
- (instancetype)initWithPanel:(NSSavePanel*)panel
andTypesList:(NSArray*)typesList {
self = [super init];
if (self) {
[self setSavePanel:panel];
[self setFileTypesList:typesList];
}
return self;
}
- (void)selectFormat:(id)sender {
NSPopUpButton* button = (NSPopUpButton*)sender;
NSInteger selectedItemIndex = [button indexOfSelectedItem];
NSArray* list = [self fileTypesList];
NSArray* fileTypes = [list objectAtIndex:selectedItemIndex];
// If we meet a '*' file extension, we allow all the file types and no
// need to set the specified file types.
if ([fileTypes count] == 0 || [fileTypes containsObject:@"*"])
[[self savePanel] setAllowedFileTypes:nil];
else
[[self savePanel] setAllowedFileTypes:fileTypes];
}
@end
// Manages the PopUpButtonHandler.
@interface AtomAccessoryView : NSView
@end
@implementation AtomAccessoryView
- (void)dealloc {
auto* popupButton =
static_cast<NSPopUpButton*>([[self subviews] objectAtIndex:1]);
[[popupButton target] release];
[super dealloc];
}
@end
namespace file_dialog {
DialogSettings::DialogSettings() = default;
DialogSettings::~DialogSettings() = default;
namespace {
void SetAllowedFileTypes(NSSavePanel* dialog, const Filters& filters) {
NSMutableArray* file_types_list = [NSMutableArray array];
NSMutableArray* filter_names = [NSMutableArray array];
// Create array to keep file types and their name.
for (const Filter& filter : filters) {
NSMutableSet* file_type_set = [NSMutableSet set];
base::ScopedCFTypeRef<CFStringRef> name_cf(
base::SysUTF8ToCFStringRef(filter.first));
[filter_names addObject:base::mac::CFToNSCast(name_cf.get())];
for (const std::string& ext : filter.second) {
base::ScopedCFTypeRef<CFStringRef> ext_cf(
base::SysUTF8ToCFStringRef(ext));
[file_type_set addObject:base::mac::CFToNSCast(ext_cf.get())];
}
[file_types_list addObject:[file_type_set allObjects]];
}
// Passing empty array to setAllowedFileTypes will cause exception.
NSArray* file_types = nil;
NSUInteger count = [file_types_list count];
if (count > 0) {
file_types = [[file_types_list objectAtIndex:0] allObjects];
// If we meet a '*' file extension, we allow all the file types and no
// need to set the specified file types.
if ([file_types count] == 0 || [file_types containsObject:@"*"])
file_types = nil;
}
[dialog setAllowedFileTypes:file_types];
if (count <= 1)
return; // don't add file format picker
// Add file format picker.
AtomAccessoryView* accessoryView =
[[AtomAccessoryView alloc] initWithFrame:NSMakeRect(0.0, 0.0, 200, 32.0)];
NSTextField* label =
[[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 60, 22)];
[label setEditable:NO];
[label setStringValue:@"Format:"];
[label setBordered:NO];
[label setBezeled:NO];
[label setDrawsBackground:NO];
NSPopUpButton* popupButton =
[[NSPopUpButton alloc] initWithFrame:NSMakeRect(50.0, 2, 140, 22.0)
pullsDown:NO];
PopUpButtonHandler* popUpButtonHandler =
[[PopUpButtonHandler alloc] initWithPanel:dialog
andTypesList:file_types_list];
[popupButton addItemsWithTitles:filter_names];
[popupButton setTarget:popUpButtonHandler];
[popupButton setAction:@selector(selectFormat:)];
[accessoryView addSubview:[label autorelease]];
[accessoryView addSubview:[popupButton autorelease]];
[dialog setAccessoryView:[accessoryView autorelease]];
}
void SetupDialog(NSSavePanel* dialog, const DialogSettings& settings) {
if (!settings.title.empty())
[dialog setTitle:base::SysUTF8ToNSString(settings.title)];
if (!settings.button_label.empty())
[dialog setPrompt:base::SysUTF8ToNSString(settings.button_label)];
if (!settings.message.empty())
[dialog setMessage:base::SysUTF8ToNSString(settings.message)];
if (!settings.name_field_label.empty())
[dialog
setNameFieldLabel:base::SysUTF8ToNSString(settings.name_field_label)];
[dialog setShowsTagField:settings.shows_tag_field];
NSString* default_dir = nil;
NSString* default_filename = nil;
if (!settings.default_path.empty()) {
base::ThreadRestrictions::ScopedAllowIO allow_io;
if (base::DirectoryExists(settings.default_path)) {
default_dir = base::SysUTF8ToNSString(settings.default_path.value());
} else {
if (settings.default_path.IsAbsolute()) {
default_dir =
base::SysUTF8ToNSString(settings.default_path.DirName().value());
}
default_filename =
base::SysUTF8ToNSString(settings.default_path.BaseName().value());
}
}
if (settings.filters.empty()) {
[dialog setAllowsOtherFileTypes:YES];
} else {
// Set setAllowedFileTypes before setNameFieldStringValue as it might
// override the extension set using setNameFieldStringValue
SetAllowedFileTypes(dialog, settings.filters);
}
// Make sure the extension is always visible. Without this, the extension in
// the default filename will not be used in the saved file.
[dialog setExtensionHidden:NO];
if (default_dir)
[dialog setDirectoryURL:[NSURL fileURLWithPath:default_dir]];
if (default_filename)
[dialog setNameFieldStringValue:default_filename];
}
void SetupDialogForProperties(NSOpenPanel* dialog, int properties) {
[dialog setCanChooseFiles:(properties & FILE_DIALOG_OPEN_FILE)];
if (properties & FILE_DIALOG_OPEN_DIRECTORY)
[dialog setCanChooseDirectories:YES];
if (properties & FILE_DIALOG_CREATE_DIRECTORY)
[dialog setCanCreateDirectories:YES];
if (properties & FILE_DIALOG_MULTI_SELECTIONS)
[dialog setAllowsMultipleSelection:YES];
if (properties & FILE_DIALOG_SHOW_HIDDEN_FILES)
[dialog setShowsHiddenFiles:YES];
if (properties & FILE_DIALOG_NO_RESOLVE_ALIASES)
[dialog setResolvesAliases:NO];
if (properties & FILE_DIALOG_TREAT_PACKAGE_APP_AS_DIRECTORY)
[dialog setTreatsFilePackagesAsDirectories:YES];
}
// Run modal dialog with parent window and return user's choice.
int RunModalDialog(NSSavePanel* dialog, const DialogSettings& settings) {
__block int chosen = NSFileHandlingPanelCancelButton;
if (!settings.parent_window || !settings.parent_window->GetNativeWindow() ||
settings.force_detached) {
chosen = [dialog runModal];
} else {
NSWindow* window = settings.parent_window->GetNativeWindow();
[dialog beginSheetModalForWindow:window
completionHandler:^(NSInteger c) {
chosen = c;
[NSApp stopModal];
}];
[NSApp runModalForWindow:window];
}
return chosen;
}
// Create bookmark data and serialise it into a base64 string.
std::string GetBookmarkDataFromNSURL(NSURL* url) {
// Create the file if it doesn't exist (necessary for NSSavePanel options).
NSFileManager* defaultManager = [NSFileManager defaultManager];
if (![defaultManager fileExistsAtPath:[url path]]) {
[defaultManager createFileAtPath:[url path] contents:nil attributes:nil];
}
NSError* error = nil;
NSData* bookmarkData =
[url bookmarkDataWithOptions:NSURLBookmarkCreationWithSecurityScope
includingResourceValuesForKeys:nil
relativeToURL:nil
error:&error];
if (error != nil) {
// Send back an empty string if there was an error.
return "";
} else {
// Encode NSData in base64 then convert to NSString.
NSString* base64data = [[NSString alloc]
initWithData:[bookmarkData base64EncodedDataWithOptions:0]
encoding:NSUTF8StringEncoding];
return base::SysNSStringToUTF8(base64data);
}
}
void ReadDialogPathsWithBookmarks(NSOpenPanel* dialog,
std::vector<base::FilePath>* paths,
std::vector<std::string>* bookmarks) {
NSArray* urls = [dialog URLs];
for (NSURL* url in urls)
if ([url isFileURL]) {
paths->push_back(base::FilePath(base::SysNSStringToUTF8([url path])));
bookmarks->push_back(GetBookmarkDataFromNSURL(url));
}
}
void ReadDialogPaths(NSOpenPanel* dialog, std::vector<base::FilePath>* paths) {
std::vector<std::string> ignored_bookmarks;
ReadDialogPathsWithBookmarks(dialog, paths, &ignored_bookmarks);
}
} // namespace
bool ShowOpenDialog(const DialogSettings& settings,
std::vector<base::FilePath>* paths) {
DCHECK(paths);
NSOpenPanel* dialog = [NSOpenPanel openPanel];
SetupDialog(dialog, settings);
SetupDialogForProperties(dialog, settings.properties);
int chosen = RunModalDialog(dialog, settings);
if (chosen == NSFileHandlingPanelCancelButton)
return false;
ReadDialogPaths(dialog, paths);
return true;
}
void OpenDialogCompletion(int chosen,
NSOpenPanel* dialog,
const DialogSettings& settings,
const OpenDialogCallback& callback) {
if (chosen == NSFileHandlingPanelCancelButton) {
#if defined(MAS_BUILD)
callback.Run(false, std::vector<base::FilePath>(),
std::vector<std::string>());
#else
callback.Run(false, std::vector<base::FilePath>());
#endif
} else {
std::vector<base::FilePath> paths;
#if defined(MAS_BUILD)
std::vector<std::string> bookmarks;
if (settings.security_scoped_bookmarks) {
ReadDialogPathsWithBookmarks(dialog, &paths, &bookmarks);
} else {
ReadDialogPaths(dialog, &paths);
}
callback.Run(true, paths, bookmarks);
#else
ReadDialogPaths(dialog, &paths);
callback.Run(true, paths);
#endif
}
}
void ShowOpenDialog(const DialogSettings& settings,
const OpenDialogCallback& c) {
NSOpenPanel* dialog = [NSOpenPanel openPanel];
SetupDialog(dialog, settings);
SetupDialogForProperties(dialog, settings.properties);
// Duplicate the callback object here since c is a reference and gcd would
// only store the pointer, by duplication we can force gcd to store a copy.
__block OpenDialogCallback callback = c;
if (!settings.parent_window || !settings.parent_window->GetNativeWindow() ||
settings.force_detached) {
[dialog beginWithCompletionHandler:^(NSInteger chosen) {
OpenDialogCompletion(chosen, dialog, settings, callback);
}];
} else {
NSWindow* window = settings.parent_window->GetNativeWindow();
[dialog beginSheetModalForWindow:window
completionHandler:^(NSInteger chosen) {
OpenDialogCompletion(chosen, dialog, settings, callback);
}];
}
}
bool ShowSaveDialog(const DialogSettings& settings, base::FilePath* path) {
DCHECK(path);
NSSavePanel* dialog = [NSSavePanel savePanel];
SetupDialog(dialog, settings);
int chosen = RunModalDialog(dialog, settings);
if (chosen == NSFileHandlingPanelCancelButton || ![[dialog URL] isFileURL])
return false;
*path = base::FilePath(base::SysNSStringToUTF8([[dialog URL] path]));
return true;
}
void SaveDialogCompletion(int chosen,
NSSavePanel* dialog,
const DialogSettings& settings,
const SaveDialogCallback& callback) {
if (chosen == NSFileHandlingPanelCancelButton) {
#if defined(MAS_BUILD)
callback.Run(false, base::FilePath(), "");
#else
callback.Run(false, base::FilePath());
#endif
} else {
std::string path = base::SysNSStringToUTF8([[dialog URL] path]);
#if defined(MAS_BUILD)
std::string bookmark;
if (settings.security_scoped_bookmarks) {
bookmark = GetBookmarkDataFromNSURL([dialog URL]);
}
callback.Run(true, base::FilePath(path), bookmark);
#else
callback.Run(true, base::FilePath(path));
#endif
}
}
void ShowSaveDialog(const DialogSettings& settings,
const SaveDialogCallback& c) {
NSSavePanel* dialog = [NSSavePanel savePanel];
SetupDialog(dialog, settings);
[dialog setCanSelectHiddenExtension:YES];
__block SaveDialogCallback callback = c;
if (!settings.parent_window || !settings.parent_window->GetNativeWindow() ||
settings.force_detached) {
[dialog beginWithCompletionHandler:^(NSInteger chosen) {
SaveDialogCompletion(chosen, dialog, settings, callback);
}];
} else {
NSWindow* window = settings.parent_window->GetNativeWindow();
[dialog beginSheetModalForWindow:window
completionHandler:^(NSInteger chosen) {
SaveDialogCompletion(chosen, dialog, settings, callback);
}];
}
}
} // namespace file_dialog