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PAMStartupEnabler.java

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package PamController;

import PamView.TopToolBar;

/**

* Class to handle some temporary disabling of the PAMGuard start button during

* creating of objects at startup. this is particulalry needed to handle

* objects being crated on the FX thread.

* @author dg50

*

*/

public class PAMStartupEnabler {

static int disableCount = 0;

/**

* Call to disable the GUI. If you call this, you MUST

* then call dropDisableCount() or PAMGuard will remain disabled.

*/

public static synchronized void addDisableCount() {

if (disableCount == 0) {

disableStartButton();

}

disableCount++;

}

/**

* Call to enable the GUI. This shold only be called AFTER a call

* to addDiableCount().

*/

public static synchronized void dropDisableCount() {

disableCount--;

if (disableCount < 0) { // should never happen.

disableCount = 0;

}

if (disableCount == 0) {

enableStartButton();

}

}

/**

* Disable the GUI and main start button.

*/

private static void disableStartButton() {

PamController.getInstance().enableGUIControl(false);

TopToolBar.enableStartButton(false);

}

/**

* Enable the GUI and main start button.

*/

private static void enableStartButton() {

PamController.getInstance().enableGUIControl(true);

TopToolBar.enableStartButton(true);

}

}