author | wenzelm |
Wed, 02 Sep 2009 20:49:04 +0200 | |
changeset 32494 | 4ab2292e452a |
parent 31942 | 63466160ff27 |
child 32501 | 41aa620885c2 |
permissions | -rw-r--r-- |
31862
53acb8ec6c51
renamed Swing to Swing_Thread, to avoid overlap with scala.swing.Swing;
wenzelm
parents:
29777
diff
changeset
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/* Title: Pure/General/swing_thread.scala |
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Author: Makarius |
31942
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
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Author: Fabian Immler, TU Munich |
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31862
53acb8ec6c51
renamed Swing to Swing_Thread, to avoid overlap with scala.swing.Swing;
wenzelm
parents:
29777
diff
changeset
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Evaluation within the AWT/Swing thread. |
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*/ |
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package isabelle |
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31942
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
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import javax.swing.{SwingUtilities, Timer} |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
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import java.awt.event.{ActionListener, ActionEvent} |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
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29202 | 13 |
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31862
53acb8ec6c51
renamed Swing to Swing_Thread, to avoid overlap with scala.swing.Swing;
wenzelm
parents:
29777
diff
changeset
|
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object Swing_Thread |
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{ |
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/* checks */ |
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def assert() = Predef.assert(SwingUtilities.isEventDispatchThread()) |
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def require() = Predef.require(SwingUtilities.isEventDispatchThread()) |
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31942
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
22 |
/* main dispatch queue */ |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
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def now[A](body: => A): A = { |
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var result: Option[A] = None |
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if (SwingUtilities.isEventDispatchThread()) { result = Some(body) } |
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else SwingUtilities.invokeAndWait(new Runnable { def run = { result = Some(body) } }) |
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result.get |
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29649
8b0c1397868e
more robust treatment of SwingUtilities.isEventDispatchThread;
wenzelm
parents:
29202
diff
changeset
|
29 |
} |
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29649
8b0c1397868e
more robust treatment of SwingUtilities.isEventDispatchThread;
wenzelm
parents:
29202
diff
changeset
|
31 |
def later(body: => Unit) { |
32494 | 32 |
if (SwingUtilities.isEventDispatchThread()) body |
29649
8b0c1397868e
more robust treatment of SwingUtilities.isEventDispatchThread;
wenzelm
parents:
29202
diff
changeset
|
33 |
else SwingUtilities.invokeLater(new Runnable { def run = body }) |
8b0c1397868e
more robust treatment of SwingUtilities.isEventDispatchThread;
wenzelm
parents:
29202
diff
changeset
|
34 |
} |
31942
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
35 |
|
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
36 |
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63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
37 |
/* delayed actions */ |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
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63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
39 |
// turn multiple invocations into single action within time span |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
40 |
def delay(time_span: Int)(action: => Unit): () => Unit = |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
41 |
{ |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
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val listener = |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
43 |
new ActionListener { override def actionPerformed(e: ActionEvent) { action } } |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
44 |
val timer = new Timer(time_span, listener) |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
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def invoke() |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
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{ |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
47 |
if (!timer.isRunning()) { |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
48 |
timer.setRepeats(false) |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
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timer.start() |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
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} |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
51 |
} |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
52 |
invoke _ |
63466160ff27
renamed Delay to Swing_Thread.delay (action is executed within AWT thread!);
wenzelm
parents:
31862
diff
changeset
|
53 |
} |
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} |