com.mycollab.vaadin.web.ui.SplitButton.java Source code

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Here is the source code for com.mycollab.vaadin.web.ui.SplitButton.java

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/**
 * This file is part of mycollab-web.
 *
 * mycollab-web is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * mycollab-web is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with mycollab-web.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.mycollab.vaadin.web.ui;

import com.mycollab.core.MyCollabException;
import com.vaadin.server.Resource;
import com.vaadin.ui.Button;
import com.vaadin.ui.Component;
import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.HorizontalLayout;
import org.vaadin.hene.popupbutton.PopupButton;

import java.io.Serializable;
import java.lang.reflect.Method;

/**
 * @author MyCollab Ltd.
 * @since 2.0
 */
public class SplitButton extends CustomComponent {
    private static final long serialVersionUID = 1L;

    private Button parentButton;
    private PopupButton popupButton;
    private boolean isPopupVisible = false;

    public SplitButton() {
        this(new Button());
    }

    public SplitButton(Button parentButton) {
        this.setImmediate(true);
        HorizontalLayout contentLayout = new HorizontalLayout();
        contentLayout.setStyleName("splitbutton");
        this.parentButton = parentButton;
        parentButton.addStyleName("parent-button");
        parentButton.setImmediate(true);
        parentButton.addClickListener(clickEvent -> fireEvent(new SplitButtonClickEvent(SplitButton.this)));

        popupButton = new PopupButton();
        popupButton.addClickListener(clickEvent -> {
            isPopupVisible = !isPopupVisible;
            fireEvent(new SplitButtonPopupVisibilityEvent(SplitButton.this, isPopupVisible));
        });

        contentLayout.addComponent(parentButton);
        contentLayout.addComponent(popupButton);

        this.setCompositionRoot(contentLayout);
    }

    @Override
    public void setCaption(String caption) {
        parentButton.setCaption(caption);
    }

    @Override
    public void setIcon(Resource icon) {
        parentButton.setIcon(icon);
    }

    public void setPopupVisible(boolean isVisible) {
        this.isPopupVisible = isVisible;
        popupButton.setPopupVisible(isPopupVisible);
    }

    public boolean getPopupVisible() {
        return this.isPopupVisible;
    }

    public void setContent(OptionPopupContent content) {
        popupButton.setContent(content);
    }

    private static final Method SPLIT_BUTTON_CLICK_CHANGE_METHOD;
    private static final Method SPLIT_POPUP_VISIBLE_CHANGE_METHOD;

    static {
        try {
            SPLIT_BUTTON_CLICK_CHANGE_METHOD = SplitButtonClickListener.class.getDeclaredMethod("splitButtonClick",
                    SplitButtonClickEvent.class);

            SPLIT_POPUP_VISIBLE_CHANGE_METHOD = SplitButtonPopupVisibilityListener.class
                    .getDeclaredMethod("splitButtonPopupVisibilityChange", SplitButtonPopupVisibilityEvent.class);
        } catch (final NoSuchMethodException e) {
            throw new MyCollabException("Internal error finding methods in TabSheet");
        }
    }

    public interface SplitButtonClickListener extends Serializable {
        void splitButtonClick(SplitButtonClickEvent event);
    }

    public static class SplitButtonClickEvent extends Component.Event {
        private static final long serialVersionUID = 1L;

        public SplitButtonClickEvent(Component source) {
            super(source);
        }

    }

    public void addClickListener(SplitButtonClickListener listener) {
        addListener(SplitButtonClickEvent.class, listener, SPLIT_BUTTON_CLICK_CHANGE_METHOD);
    }

    public void addPopupVisibilityListener(SplitButtonPopupVisibilityListener listener) {
        addListener(SplitButtonPopupVisibilityEvent.class, listener, SPLIT_POPUP_VISIBLE_CHANGE_METHOD);
    }

    public interface SplitButtonPopupVisibilityListener extends Serializable {
        void splitButtonPopupVisibilityChange(SplitButtonPopupVisibilityEvent event);
    }

    public static class SplitButtonPopupVisibilityEvent extends Component.Event {
        private static final long serialVersionUID = 1L;

        private boolean isVisible;

        public SplitButtonPopupVisibilityEvent(Component source, boolean isVisible) {
            super(source);
            this.isVisible = isVisible;
        }

        public boolean isPopupVisible() {
            return this.isVisible;
        }
    }

    @Override
    public void addStyleName(String styleName) {
        super.addStyleName(styleName);

        parentButton.addStyleName(styleName);
        popupButton.addStyleName(styleName);
    }

}