ProcessItemRenderer.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.ide.command.toolbar.processes;

import com.google.gwt.user.client.ui.Widget;

import org.eclipse.che.ide.ui.dropdown.BaseListItem;
import org.eclipse.che.ide.ui.dropdown.DropdownListItemRenderer;

/** Renders widgets for representing a {@link Process}. */
class ProcessItemRenderer implements DropdownListItemRenderer {

    private final BaseListItem<Process> item;
    private final StopProcessHandler    stopHandler;
    private final RerunProcessHandler   reRunHandler;

    private ProcessWidget headerWidget;
    private ProcessWidget listWidget;

    ProcessItemRenderer(BaseListItem<Process> listItem,
                        StopProcessHandler stopProcessHandler,
                        RerunProcessHandler reRunProcessHandler) {
        item = listItem;
        stopHandler = stopProcessHandler;
        reRunHandler = reRunProcessHandler;
    }

    @Override
    public Widget renderHeaderWidget() {
        if (headerWidget == null) {
            headerWidget = new ProcessWidget(item, stopHandler, reRunHandler);
        }

        return headerWidget;
    }

    @Override
    public Widget renderListWidget() {
        if (listWidget == null) {
            listWidget = new ProcessWidget(item, stopHandler, reRunHandler);
        }

        return listWidget;
    }

    /** Informs rendered widgets that related process has been stopped. */
    void notifyProcessStopped() {
        headerWidget.toggleStopped();
        listWidget.toggleStopped();
    }

    interface StopProcessHandler {
        /** Called when stopping {@code process} is requested. */
        void onStopProcess(Process process);
    }

    interface RerunProcessHandler {
        /** Called when rerunning {@code process} is requested. */
        void onRerunProcess(Process process);
    }
}