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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui_thread_helpers.h"
#import <Cocoa/Cocoa.h>
#include "base/scoped_ptr.h"
#include "base/task.h"
#include "chrome/browser/browser_thread.h"
// This is a wrapper for running Chrome Task objects from within a native run
// loop. A typical use case is when Chrome work needs to get done but the main
// message loop is blocked by a nested run loop (like an event tracking one).
// This can run specific tasks in that nested loop. This owns the task and will
// delete it and itself when done.
@interface UITaskHelperMac : NSObject {
@private
scoped_ptr<Task> task_;
}
- (id)initWithTask:(Task*)task;
- (void)runTask;
@end
@implementation UITaskHelperMac
- (id)initWithTask:(Task*)task {
if ((self = [super init])) {
task_.reset(task);
}
return self;
}
- (void)runTask {
task_->Run();
[self autorelease];
}
@end
namespace ui_thread_helpers {
bool PostTaskWhileRunningMenu(const tracked_objects::Location& from_here,
Task* task) {
// This deletes itself and the task after the task runs.
UITaskHelperMac* runner = [[UITaskHelperMac alloc] initWithTask:task];
// Schedule the selector in multiple modes in case this was called while a
// menu was not running.
NSArray* modes = [NSArray arrayWithObjects:NSEventTrackingRunLoopMode,
NSDefaultRunLoopMode,
nil];
[runner performSelectorOnMainThread:@selector(runTask)
withObject:nil
waitUntilDone:NO
modes:modes];
return true;
}
} // namespace ui_thread_helpers
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