name.martingeisse.webide.features.simvm.editor.SimulatorControlPanel.java Source code

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Here is the source code for name.martingeisse.webide.features.simvm.editor.SimulatorControlPanel.java

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/**
 * Copyright (c) 2010 Martin Geisse
 *
 * This file is distributed under the terms of the MIT license.
 */

package name.martingeisse.webide.features.simvm.editor;

import name.martingeisse.webide.features.simvm.simulation.SimulatedVirtualMachine;
import name.martingeisse.webide.features.simvm.simulation.SimulationEventMessage;
import name.martingeisse.webide.features.simvm.simulation.SimulationEvents;
import name.martingeisse.webide.features.simvm.simulation.SimulationState;
import name.martingeisse.webide.ipc.IpcEvent;

import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.AjaxLink;
import org.apache.wicket.atmosphere.Subscribe;
import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.model.IModel;

/**
 * This panel can be used as the "right" panel in the tab bar of
 * a {@link CompositeSimulationModelElementPanel} and provides
 * buttons to start and stop the simulation.
 */
public class SimulatorControlPanel extends Panel {

    /**
     * Constructor.
     * @param id the wicket id
     * @param model the model
     */
    public SimulatorControlPanel(final String id, final IModel<SimulatedVirtualMachine> model) {
        super(id, model);
        setOutputMarkupId(true);

        // create components
        add(new AjaxLink<Void>("startButton") {

            @Override
            public void onClick(AjaxRequestTarget target) {
                getVirtualMachine().startSimulation();
                getVirtualMachine().resume();
                if (getVirtualMachine().getState() != SimulationState.STOPPED) {
                    target.add(SimulatorControlPanel.this);
                }
            }

            /* (non-Javadoc)
             * @see org.apache.wicket.ajax.markup.html.AjaxLink#onComponentTag(org.apache.wicket.markup.ComponentTag)
             */
            @Override
            protected void onComponentTag(ComponentTag tag) {
                super.onComponentTag(tag);
                if (getVirtualMachine().getState() != SimulationState.STOPPED) {
                    tag.append("style", "display: none", "; ");
                }
            }

        });
        add(new AjaxLink<Void>("terminateButton") {

            @Override
            public void onClick(AjaxRequestTarget target) {
                getVirtualMachine().terminate();
                if (getVirtualMachine().getState() == SimulationState.STOPPED) {
                    target.add(SimulatorControlPanel.this);
                }
            }

            /* (non-Javadoc)
             * @see org.apache.wicket.ajax.markup.html.AjaxLink#onComponentTag(org.apache.wicket.markup.ComponentTag)
             */
            @Override
            protected void onComponentTag(ComponentTag tag) {
                super.onComponentTag(tag);
                if (getVirtualMachine().getState() == SimulationState.STOPPED) {
                    tag.append("style", "display: none", "; ");
                }
            }

        });
    }

    /**
     * @return the {@link IModel} for the {@link SimulatedVirtualMachine}
     */
    @SuppressWarnings("unchecked")
    public final IModel<SimulatedVirtualMachine> getVirtualMachineModel() {
        return (IModel<SimulatedVirtualMachine>) getDefaultModel();
    }

    /**
     * @return the {@link SimulatedVirtualMachine}
     */
    public final SimulatedVirtualMachine getVirtualMachine() {
        return getVirtualMachineModel().getObject();
    }

    /**
     * Subscribes to {@link IpcEvent}s.
     * @param target the request handler
     * @param message the event message
     */
    @Subscribe(filter = SameSimulationFilter.class)
    public void onSimulatorGeneratedEvent(final AjaxRequestTarget target, final SimulationEventMessage message) {
        IpcEvent event = message.getEvent();
        String type = event.getType();
        if (type.equals(SimulationEvents.EVENT_TYPE_START) || type.equals(SimulationEvents.EVENT_TYPE_SUSPEND)
                || type.equals(SimulationEvents.EVENT_TYPE_TERMINATE)) {
            // System.out.println("* " + getRunningSimulation());
            //         TODO das reicht noch nicht. Dieses Panel wird neu gerendert *bevor* die Simulation endgltig beendet wurde (-> race condition!)
            target.add(this);
        }
    }

}