Class: RMExtensions::LongTask

Inherits:
Object
  • Object
show all
Defined in:
lib/motion/util.rb

Overview

LongTask encapsulates beginBackgroundTaskWithExpirationHandler/endBackgroundTask:

RMExtensions::BackgroundTask.new(“my long task”) do |task|

do_something_long
task.end!

end

RMExtensions::BackgroundTask.new(“my long task”) do |task|

do_something_long_async do
  # later this long task finishes...
  task.end!
end

end

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(desc = nil, &block) ⇒ LongTask

RMExtensions::BackgroundTask.new(“my long task”) { |task| task.end! }



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# File 'lib/motion/util.rb', line 29

def initialize(desc=nil, &block)
  @desc = desc
  @bgTask = UIApplication.sharedApplication.beginBackgroundTaskWithExpirationHandler(lambda do
    if ::RMExtensions.debug?
      p "ERROR: #{self.inspect} #{@desc} didn't call #end! in time!"
    end
    UIApplication.sharedApplication.endBackgroundTask(@bgTask)
  end.weak!)
  block.call(self)
  self
end

Instance Attribute Details

#bgTask ⇒ Object

Returns the value of attribute bgTask.



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# File 'lib/motion/util.rb', line 26

def bgTask
  @bgTask
end

#desc ⇒ Object

Returns the value of attribute desc.



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# File 'lib/motion/util.rb', line 26

def desc
  @desc
end

Instance Method Details

#end! ⇒ Object 



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# File 'lib/motion/util.rb', line 41

def end!
  if ::RMExtensions.debug?
    p "SUCCESS: #{self.inspect} #{@desc} ended successfully."
  end
  if @bgTask != UIBackgroundTaskInvalid
    UIApplication.sharedApplication.endBackgroundTask(@bgTask)
    @bgTask = UIBackgroundTaskInvalid
  end
end