passepartout-apple/Passepartout/Mac/Reusable/ProcessTransformer.m

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//
// ProcessTransformer.m
// Passepartout
//
// Created by Davide De Rosa on 6/25/22.
// Copyright (c) 2022 Davide De Rosa. All rights reserved.
//
// https://github.com/passepartoutvpn
//
// This file is part of Passepartout.
//
// Passepartout is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Passepartout is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Passepartout. If not, see <http://www.gnu.org/licenses/>.
//
#import "ProcessTransformer.h"
@import AppKit;
@import ApplicationServices;
//@import Carbon;
// https://stackoverflow.com/a/22242797/784615
@interface ProcessTransformer ()
@property (nonatomic) BOOL isForeground;
- (BOOL)tranformAppToState:(ProcessApplicationTransformState)newState;
@end
@implementation ProcessTransformer
- (instancetype)init
{
if ((self = [super init])) {
self.isForeground = YES;
}
return self;
}
- (BOOL)toggleForeground
{
if (self.isForeground) {
return [self sendToBackground];
} else {
return [self bringToForeground];
}
}
- (BOOL)bringToForeground
{
if (![self tranformAppToState:kProcessTransformToForegroundApplication]) {
return NO;
}
// if (SetSystemUIMode(kUIModeNormal, 0) != 0) {
// return NO;
// }
[NSApp activateIgnoringOtherApps:YES];
self.isForeground = YES;
return YES;
}
- (BOOL)sendToBackground
{
if (![self tranformAppToState:kProcessTransformToBackgroundApplication]) {
return NO;
}
self.isForeground = NO;
return YES;
}
- (BOOL)tranformAppToState:(ProcessApplicationTransformState)newState
{
ProcessSerialNumber psn = { 0, kCurrentProcess };
OSStatus transformStatus = TransformProcessType(&psn, newState);
if ((transformStatus != 0)) {
NSError *error = [NSError errorWithDomain:NSOSStatusErrorDomain code:transformStatus userInfo:nil];
NSLog(@"tranformAppToState: Unable to transform app state: %@", error);
}
return (transformStatus == 0);
}
@end