org.kaaproject.kaa.sandbox.web.client.mvp.view.widget.HeaderMenuItems.java Source code

Introduction

Here is the source code for org.kaaproject.kaa.sandbox.web.client.mvp.view.widget.HeaderMenuItems.java

Source

/**
 *  Copyright 2014-2016 CyberVision, Inc.
 *
 *  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.kaaproject.kaa.sandbox.web.client.mvp.view.widget;

import java.util.ArrayList;
import java.util.List;

import org.kaaproject.kaa.sandbox.web.client.mvp.view.widget.ActionsLabel.ActionMenuItemListener;
import org.kaaproject.kaa.sandbox.web.client.util.Utils;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;

public class HeaderMenuItems extends HorizontalPanel {

    private ActionsLabel collapsedMenu;

    private List<ActionsLabel> items = new ArrayList<>();
    private boolean isCollapsed = false;
    private List<HandlerRegistration> registrations = new ArrayList<>();

    public HeaderMenuItems() {
        addStyleName(Utils.sandboxStyle.buttons());
        setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);
        setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);
        setSize("100%", "100%");

        collapsedMenu = new ActionsLabel("", true);
        collapsedMenu.addStyleName(Utils.sandboxStyle.button());
        collapsedMenu.addStyleName(Utils.sandboxStyle.buttonLast());
        collapsedMenu.addStyleName(Utils.sandboxStyle.toggle());
        collapsedMenu.setVisible(false);
        add(collapsedMenu);
    }

    public void addMenuItem(String text, final ActionMenuItemListener listener) {

        ActionsLabel item = new ActionsLabel(text, false);
        item.addStyleName(Utils.sandboxStyle.button());
        items.add(item);

        registrations.add(item.addClickHandler(new ClickHandler() {

            @Override
            public void onClick(ClickEvent event) {
                listener.onMenuItemSelected();
            }
        }));

        item.setVisible(!isCollapsed);
        add(item);

        collapsedMenu.addMenuItem(text, listener);

        updateStyles();
    }

    private void updateStyles() {
        for (int i = 0; i < items.size(); i++) {
            if (i < items.size() - 1) {
                items.get(i).removeStyleName(Utils.sandboxStyle.buttonLast());
            } else {
                items.get(i).addStyleName(Utils.sandboxStyle.buttonLast());
            }
        }
    }

    public void reset() {
        for (HandlerRegistration registration : registrations) {
            registration.removeHandler();
        }
        registrations.clear();
        collapsedMenu.clearItems();
        for (ActionsLabel item : items) {
            item.removeFromParent();
        }
        items.clear();
    }

    public void setCollapsed(boolean collapsed) {
        if (isCollapsed != collapsed) {
            isCollapsed = collapsed;
            collapsedMenu.setVisible(isCollapsed);
            for (ActionsLabel item : items) {
                item.setVisible(!isCollapsed);
            }
        }
    }

    public boolean isCollapsed() {
        return isCollapsed;
    }

}