On Sat, Jul 26, 2008 at 3:34 PM, Sumner Trammell
<[EMAIL PROTECTED]> wrote:
> Hi. I'm writing a Cocoa document-based app (using the Xcode template) that
> uses a WebView and needs an NSTimer to trigger one of the methods every 10
> seconds in the MyDocument class.
It sounds like you want a single timer shared by all instances of your
class, so you should do your work setting it up (and tearing it down)
in class methods. Something like (warning, composed in mail):
(Note, checkVPN: is now a class method, not an instance method)
@interface MyDocument : NSDocument
{
IBOutlet WebView *webView;
}
...
@implementation MyDocument
static NSTimer *VPNTimer;
static NSInteger VPNTimerCount;
+(void)startVPNTimer {
@synchronize(self) {
VPNTimerCount++;
if(VPNTimer == nil) {
VPNTimer = [[NSTimer scheduledTimerWithTimeInterval: 10.0
target: self
selector: @selector(checkVPN:)
userInfo: nil
repeats: YES] retain];
}
}
}
+(void)relinquishTimer {
@synchronize(self) {
if(VPNTimerCount <= 1) {
[VPNTimer invalidate];
[VPNTimer release];
VPNTimer = nil;
VPNTimerCount = 0;
} else {
VPNTimerCount--;
}
}
}
+(void)checkVPN:(NSTimer*)timer {
//Do your work here
}
- (id)init {
self = [super init];
if (self) {
[[self class] startVPNTimer];
}
return self;
}
- (void)close {
[[self class] relinquishTimer];
//Your normal close machinery goes here
}
--
Clark S. Cox III
[EMAIL PROTECTED]
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