Files
santa/Source/SantaGUI/SNTNotificationManager.m
2015-04-21 14:29:30 -04:00

97 lines
3.2 KiB
Objective-C

/// Copyright 2015 Google Inc. All rights reserved.
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
#import "SNTNotificationManager.h"
#import "SNTStoredEvent.h"
@interface SNTNotificationManager ()
///
/// The currently displayed notification
///
@property SNTMessageWindowController *currentWindowController;
///
/// The queue of pending notifications
///
@property(readonly) NSMutableArray *pendingNotifications;
@end
@implementation SNTNotificationManager
- (instancetype)init {
self = [super init];
if (self) {
_pendingNotifications = [[NSMutableArray alloc] init];
}
return self;
}
- (void)windowDidClose {
[self.pendingNotifications removeObject:self.currentWindowController];
self.currentWindowController = nil;
if ([self.pendingNotifications count]) {
self.currentWindowController = [self.pendingNotifications firstObject];
[self.currentWindowController showWindow:self];
} else {
[NSApp hide:self];
}
}
#pragma mark SNTNotifierXPC protocol methods
- (void)postBlockNotification:(SNTStoredEvent *)event withCustomMessage:(NSString *)message {
// See if this binary is already in the list of pending notifications.
NSPredicate *predicate =
[NSPredicate predicateWithFormat:@"event.fileSHA256==%@", event.fileSHA256];
if ([[self.pendingNotifications filteredArrayUsingPredicate:predicate] count]) return;
if (!event) {
NSLog(@"Error: Missing event object in message received from daemon!");
return;
}
if (!message) message = (NSString *)[NSNull null];
// Notifications arrive on a background thread but UI updates must happen on the main thread.
// This includes making windows.
[self performSelectorOnMainThread:@selector(postBlockNotificationMainThread:)
withObject:@{ @"event": event, @"custommsg": message }
waitUntilDone:NO];
}
- (void)postBlockNotificationMainThread:(NSDictionary *)dict {
SNTStoredEvent *event = dict[@"event"];
NSString *msg = dict[@"custommsg"];
// Create message window
SNTMessageWindowController *pendingMsg = [[SNTMessageWindowController alloc] initWithEvent:event
andMessage:msg];
pendingMsg.delegate = self;
[self.pendingNotifications addObject:pendingMsg];
// If a notification isn't currently being displayed, display the incoming one.
if (!self.currentWindowController) {
self.currentWindowController = pendingMsg;
[NSApp activateIgnoringOtherApps:YES];
// It's quite likely that we're currently on a background thread, and GUI code should always be
// on main thread. Open the window on the main thread so any code it runs is also.
[pendingMsg showWindow:nil];
}
}
@end