ShapeSetsMenuItemsBuilder.java

/*
 * Copyright 2017 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.kie.workbench.common.stunner.client.widgets.menu.dev;

import java.util.Collection;
import javax.enterprise.context.ApplicationScoped;
import javax.inject.Inject;

import com.google.gwt.user.client.ui.IsWidget;
import org.gwtbootstrap3.client.ui.AnchorListItem;
import org.gwtbootstrap3.client.ui.Button;
import org.gwtbootstrap3.client.ui.ButtonGroup;
import org.gwtbootstrap3.client.ui.DropDownMenu;
import org.gwtbootstrap3.client.ui.constants.ButtonSize;
import org.gwtbootstrap3.client.ui.constants.IconType;
import org.gwtbootstrap3.client.ui.constants.Toggle;
import org.kie.workbench.common.stunner.client.widgets.menu.MenuUtils;
import org.kie.workbench.common.stunner.core.client.ShapeSet;
import org.kie.workbench.common.stunner.core.client.api.ShapeManager;
import org.uberfire.workbench.model.menu.MenuItem;

/**
 * The menu builder that provides a dropdown menu item in order to create new diagrams.
 */
@ApplicationScoped
public class ShapeSetsMenuItemsBuilder {

    private final ShapeManager shapeManager;

    public interface Callback {

        void onClick(ShapeSet shapeSet);
    }

    @Inject
    public ShapeSetsMenuItemsBuilder(final ShapeManager shapeManager) {
        this.shapeManager = shapeManager;
    }

    public MenuItem build(final String title,
                          final String prefix,
                          final Callback callback) {
        final DropDownMenu menu = new DropDownMenu() {{
            addStyleName("pull-right");
        }};
        final Collection<ShapeSet<?>> shapeSets = shapeManager.getShapeSets();
        if (null != shapeSets) {
            shapeSets.stream().forEach(shapeSet -> {
                menu.add(new AnchorListItem(prefix + " " + shapeSet.getName()) {{
                    setTitle(prefix + " " + shapeSet.getDescription());
                    setIcon(IconType.PLUS);
                    addClickHandler(event -> callback.onClick(shapeSet));
                }});
            });
        }
        final IsWidget group = new ButtonGroup() {{
            add(new Button() {{
                setToggleCaret(false);
                setDataToggle(Toggle.DROPDOWN);
                setSize(ButtonSize.SMALL);
                setText(title);
                setTitle(title);
            }});
            add(menu);
        }};
        return MenuUtils.buildItem(group);
    }
}