core/plugins/org.eclipse.dltk.debug.ui/src/org/eclipse/dltk/internal/debug/ui/ScriptHotCodeReplaceListener.java

package org.eclipse.dltk.internal.debug.ui;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.debug.core.DebugException;
import org.eclipse.dltk.debug.core.IHotCodeReplaceListener;
import org.eclipse.dltk.debug.core.model.IScriptDebugTarget;
import org.eclipse.dltk.debug.ui.DLTKDebugUIPlugin;
import org.eclipse.dltk.debug.ui.IDLTKDebugUIPreferenceConstants;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class ScriptHotCodeReplaceListener implements IHotCodeReplaceListener {

	@Override
	public void hotCodeReplaceSucceeded(IScriptDebugTarget target) {
	}

	@Override
	public void hotCodeReplaceFailed(final IScriptDebugTarget target,
			final DebugException exception) {
		if ((exception != null && !DLTKDebugUIPlugin.getDefault()
				.getPreferenceStore().getBoolean(
						IDLTKDebugUIPreferenceConstants.PREF_ALERT_HCR_FAILED))
				|| ((exception == null) && !DLTKDebugUIPlugin.getDefault()
						.getPreferenceStore().getBoolean(
								IDLTKDebugUIPreferenceConstants.PREF_ALERT_HCR_NOT_SUPPORTED))) {
			return;
		}

		final Display display = DLTKDebugUIPlugin.getStandardDisplay();
		if (display.isDisposed()) {
			return;
		}

		final IStatus status;
		final String preference;
		final String alertMessage;
		final String launchName = target.getLaunch().getLaunchConfiguration()
				.getName();
		if (exception == null) {
			status = new Status(IStatus.WARNING,
					DLTKDebugUIPlugin.getUniqueIdentifier(), IStatus.WARNING,
					Messages.ScriptHotCodeReplaceListener_theTargetDoesntSupportHotCodeReplace,
					null);
			preference = IDLTKDebugUIPreferenceConstants.PREF_ALERT_HCR_NOT_SUPPORTED;
			alertMessage = Messages.ScriptHotCodeReplaceListener_doNotShowErrorWhenHotCodeReplaceIsNotSupported;
		} else {
			status = new Status(IStatus.WARNING,
					DLTKDebugUIPlugin.getUniqueIdentifier(), IStatus.WARNING,
					exception.getMessage(), exception.getCause());
			preference = IDLTKDebugUIPreferenceConstants.PREF_ALERT_HCR_FAILED;
			alertMessage = Messages.ScriptHotCodeReplaceListener_doNotShowErrorWhenHotCodeReplaceFails;
		}
		final String title = Messages.ScriptHotCodeReplaceListener_hotCodeReplaceFailed;
		final String message = NLS.bind(
				Messages.ScriptHotCodeReplaceListener_someCodeChangesCannotBeHotSwappedIntoARunningInterpreter,
				launchName);
		display.asyncExec(() -> {
			if (display.isDisposed()) {
				return;
			}
			Shell shell = DLTKDebugUIPlugin.getActiveWorkbenchShell();
			HotCodeReplaceErrorDialog dialog = new HotCodeReplaceErrorDialog(
					shell, title, message, status, preference, alertMessage,
					DLTKDebugUIPlugin.getDefault().getPreferenceStore(),
					target);
			dialog.setBlockOnOpen(false);
			dialog.open();
		});
	}
}