Traced

A view that wraps around another, collecting a log or trace of events while delegating its actual event-handling to the wrapped view. Provides additional methods for accessing such traces: trace, simulateAndGet, and startAndGet. A few examples of using these methods are given below.

simulate 500 clock ticks on the trace-collecing view and print the trace of clock ticks accompanied by descriptions of the view’äs model.

for (traceItem, traceEvent) <- myTracedView.simulateAndGet(500) do
   println(traceEvent + ": " + traceItem)

Or, equivalently:

myTracedView.simulate(500)
 for (traceItem, traceEvent) <- myTracedView.trace do
   println(traceEvent + ": " + traceItem)

Alternatively, start the trace-collecting view and run it interactively until it is done or a tick limit is reached. Then print the trace of ticks and GUI events accompanied with descriptions of the view’s model.

val futureTrace = myTracedView.startAndGet(tickLimit=100) recover {
   case Aborted(message, partialTrace) => partialTrace
 }
 for trace <- futureTrace; (traceItem, traceEvent) <- trace do
   println(traceEvent + ": " + traceItem)

Sets a new tick rate for the view, replacing any previously set by the constructor or this method.

Closes the view: stops it (as per stop), does any onClose effects, hides the GUI window, and possibly terminates the entire application (as per the constructor parameter).

The icon to be displayed in the title bar of this view’s GUI frame.

Sets the icon to be displayed in the title bar of this view’s GUI frame.

Sets the icon to be displayed in the title bar of this view’s GUI frame.

Determines if the given state is a “done state” for the view. By default, this is never the case, but that behavior can be overridden.

Once done, the view stops reacting to events and updating its graphics and may close its GUI window, depending on the constructor parameters of the view.

Indicates whether the view is paused. This implementation delegates to the underlying View that is being traced.

Returns a Pic that graphically represents the current state of the view’s model object. This method is automatically invoked by the view after GUI events and clock ticks. Left abstract by this class so any concrete view needs to add a custom implementation.

For best results, all invocations of this method on a single view object should return Pics of equal dimensions.

the model object represented in the view.

Causes an effect whenever a mouse button is clicked (pressed+released, possibly multiple times in sequence) above the view. Does nothing by default but can be overridden.

If you don’t need much information about the GUI event, you may find it simpler to implement the other method of the same name instead of this one.

Causes an effect whenever a mouse button is clicked (pressed+released, possibly multiple times in sequence) above the view. Does nothing by default but can be overridden.

If the desired behavior depends on detailed information about the GUI event, you may want to implement the other method of the same name instead of this one.

Causes an effect when the view’s GUI window is closed for any reason. By default, this method does nothing.

Causes an effect whenever a key on the keyboard is pressed down while the view has the keyboard focus. Does nothing by default but can be overridden.

If you don’t need much information about the GUI event, you may find it simpler to implement the other method of the same name instead of this one.

Causes an effect whenever a key on the keyboard is pressed down while the view has the keyboard focus. Does nothing by default but can be overridden.

If the desired behavior depends on detailed information about the GUI event, you may want to implement the other method of the same name instead of this one.

Causes an effect whenever a key on the keyboard is released while the view has the keyboard focus. Does nothing by default but can be overridden.

If you don’t need much information about the GUI event, you may find it simpler to implement the other method of the same name instead of this one.

Causes an effect whenever a key on the keyboard is released while the view has the keyboard focus. Does nothing by default but can be overridden.

If the desired behavior depends on detailed information about the GUI event, you may want to implement the other method of the same name instead of this one.

Causes an effect whenever a mouse button is pressed down above the view. Does nothing by default but can be overridden.

If you don’t need much information about the GUI event, you may find it simpler to implement the other method of the same name instead of this one.

Causes an effect whenever a mouse button is pressed down above the view. Does nothing by default but can be overridden.

If the desired behavior depends on detailed information about the GUI event, you may want to implement the other method of the same name instead of this one.

Causes an effect whenever the mouse cursor is dragged above the view. Does nothing by default but can be overridden.

If you don’t need much information about the GUI event, you may find it simpler to implement the other method of the same name instead of this one.

Causes an effect whenever the mouse cursor is dragged above the view. Does nothing by default but can be overridden.

If the desired behavior depends on detailed information about the GUI event, you may want to implement the other method of the same name instead of this one.

Causes an effect whenever the mouse cursor enters the view. Does nothing by default but can be overridden.

Causes an effect whenever the mouse cursor exits the view. Does nothing by default but can be overridden.

Causes an effect whenever the mouse cursor moves above the view. Does nothing by default but can be overridden.

If you don’t need much information about the GUI event, you may find it simpler to implement the other method of the same name instead of this one.

Causes an effect whenever the mouse cursor moves above the view. Does nothing by default but can be overridden.

If the desired behavior depends on detailed information about the GUI event, you may want to implement the other method of the same name instead of this one.

Causes an effect whenever a mouse button is released above the view. Does nothing by default but can be overridden.

If you don’t need much information about the GUI event, you may find it simpler to implement the other method of the same name instead of this one.

Causes an effect whenever a mouse button is released above the view. Does nothing by default but can be overridden.

If the desired behavior depends on detailed information about the GUI event, you may want to implement the other method of the same name instead of this one.

Causes an additional effect when the view is stopped (with stop()). This implementation delegates to the underlying View that is being traced. In addition, if the traced view had been started with startAndGet and reaches its tick limit before being done, this method causes the returned future to complete with a failure.

Causes an effect whenever the view’s internal clock ticks. Does nothing by default but can be overridden.

If you don’t need the number of the clock tick, you may find it simpler to implement the other method of the same name instead of this one.

Causes an effect whenever the view’s internal clock ticks. Does nothing by default but can be overridden.

Causes an effect whenever a key on the keyboard is typed (pressed+released) while the view has the keyboard focus. Does nothing by default but can be overridden.

If you don’t need much information about the GUI event, you may find it simpler to implement the other method of the same name instead of this one.

Causes an effect whenever a key on the keyboard is typed (pressed+released) while the view has the keyboard focus. Does nothing by default but can be overridden.

If the desired behavior depends on detailed information about the GUI event, you may want to implement the other method of the same name instead of this one.

Causes an effect whenever the mouse wheel is rotated above the view. Does nothing by default but can be overridden.

If you don’t need much information about the GUI event, you may find it simpler to implement the other method of the same name instead of this one.

Causes an effect whenever the mouse wheel is rotated above the view. Does nothing by default but can be overridden.

If the desired behavior depends on detailed information about the GUI event, you may want to implement the other method of the same name instead of this one.

Programmatically requests an update to the graphics of the view (even though no clock tick or triggering GUI event occurred).

Runs the view as if by calling start except that it runs “headless”, with no actual GUI window visible and independently of a real-time clock. A number of simulated clock ticks are immediately sent to the view; this continues until either the view determines it is done or a predetermined maximum number of ticks has been reached.

Simulates this trace-generating view with simulate and returns the resulting trace. This is equivalent to calling first simulate, then trace. See also startAndGet.

Determines whether the view should play a sound, given the current state of its model. By default, no sounds are played.

Starts the view: loads the model in the GUI window, makes the window visible oncreen, and starts the clock. Cf. simulate.

Starts this trace-generating view with start and returns a Future that evaluates to the resulting trace. The Future succeeds when the view is done; if the view isn’t done after a given number of clock ticks, the Future fails with TraceAborted, producing a partial trace. See also simulateAndGet.

Stops the view: stops the clock, stops listening to events, and disposes of the GUI window. A stopped view cannot be restarted.

Returns a brief textual description of the view.

the tooltip text to be displayed while the mouse hovers on the view

Sets the tooltip text to be displayed while the mouse hovers on the view.

Returns a trace of the events processed by this view. The trace comes in a collection of pairs, each of which is composed of a TraceData value that describes at the time of the event and a TraceEvent value that describes the event itself.

Returns a View that stores a trace of the ticks and GUI events that its event handlers process. This parameterless method stores, at each event, the toString description of the View’s (mutable) model. This is equivalent to calling tracedWith and passing in that toString method.

Returns a View that stores a pictorial trace of the ticks and GUI events that the View’s event handlers process. This is equivalent to calling tracedWith and passing in the View’s makePic method.

Returns a view that collects of the ticks and GUI events that the View’s event handlers process, using the given function to generate that trace. That trace-collecting view, which an instance of the Traced subclass, delegates the actual event handling to this original view but provides an additional interface for tracing.

whether this view’s GUI frame is visible onscreen

Sets whether this view’s GUI frame is visible onscreen.