initial

1 files changed, 51 insertions, 0 deletions

diff --git a/VKPC/Queue.m b/VKPC/Queue.m
new file mode 100644
index 0000000..d5cdef6
--- /dev/null
+++ b/VKPC/Queue.m
@@ -0,0 +1,51 @@
+//
+//  Queue.m
+//  VKPC
+//
+//  Created by Eugene on 12/3/13.
+//  Copyright (c) 2013 Eugene Z. All rights reserved.
+//
+
+#import "Queue.h"
+#import "NSMutableArray+QueueAdditions.h"
+
+@implementation Queue
+
+- (id)init {
+    if (self = [super init]) {
+        tasks = [[NSMutableArray alloc] init];
+        active = false;
+    }
+    return self;
+}
+
+- (void)setHandler:(__strong id<QueueControllerProtocol>)val {
+    handler = val;
+}
+
+- (void)addTask:(id)task {
+    [tasks enqueue:task];
+    
+    if (!active) [self process];
+}
+
+- (void)process {
+    if (active || ![tasks count]) return;
+    
+    active = true;
+    id task = [tasks dequeue];
+    [self passToHandler:task];
+}
+
+- (void)passToHandler:(__strong id)task {
+    [handler onQueueTask:task forQueue:self];
+}
+
+- (void)taskDone {
+    if (active) {
+        active = false;
+        [self process];
+    }
+}
+
+@end