GoalPageViewImpl.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.editor.page.goal;

import com.google.common.annotations.VisibleForTesting;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Widget;
import com.google.inject.Inject;

import org.eclipse.che.ide.api.command.CommandGoal;
import org.eclipse.che.ide.ui.listbox.CustomListBox;

import java.util.Set;

/**
 * Implementation of {@link GoalPageView}.
 *
 * @author Artem Zatsarynnyi
 */
public class GoalPageViewImpl extends Composite implements GoalPageView {

    @VisibleForTesting
    static final String CREATE_GOAL_ITEM = "New Command Goal...";

    private static final GoalPageViewImplUiBinder UI_BINDER = GWT.create(GoalPageViewImplUiBinder.class);

    @UiField
    CustomListBox goalsList;

    private ActionDelegate delegate;
    private String         lastValue;

    @Inject
    public GoalPageViewImpl() {
        initWidget(UI_BINDER.createAndBindUi(this));
    }

    @Override
    public void setDelegate(ActionDelegate delegate) {
        this.delegate = delegate;
    }

    @Override
    public void setAvailableGoals(Set<CommandGoal> goals) {
        goalsList.clear();
        goals.forEach(g -> goalsList.addItem(g.getId()));

        goalsList.addItem(CREATE_GOAL_ITEM);
    }

    @Override
    public void setGoal(String goalId) {
        goalsList.select(goalId);
        lastValue = goalId;
    }

    @UiHandler({"goalsList"})
    void onGoalChanged(ChangeEvent event) {
        String chosenValue = goalsList.getValue();

        if (chosenValue.equals(CREATE_GOAL_ITEM)) {
            goalsList.select(lastValue);
            delegate.onCreateGoal();
        } else {
            lastValue = chosenValue;
            delegate.onGoalChanged(lastValue);
        }
    }

    interface GoalPageViewImplUiBinder extends UiBinder<Widget, GoalPageViewImpl> {
    }
}