com.vaadin.flow.component.menubar.MenuBarRootItem Maven / Gradle / Ivy

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/*
 * Copyright 2000-2019 Vaadin Ltd.
 *
 * 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 com.vaadin.flow.component.menubar;

import com.vaadin.flow.component.contextmenu.MenuItem;
import com.vaadin.flow.function.SerializableRunnable;

class MenuBarRootItem extends MenuItem {

    private MenuBar menuBar;

    MenuBarRootItem(MenuBar menuBar, SerializableRunnable contentReset) {
        super(null, contentReset);
        this.menuBar = menuBar;
    }

    @Override
    public void setCheckable(boolean checkable) {
        if (checkable) {
            throw new UnsupportedOperationException(
                    "A root level item in a MenuBar can not be checkable");
        }
    }

    @Override
    public void setEnabled(boolean enabled) {
        if (enabled == isEnabled()) {
            return;
        }
        super.setEnabled(enabled);
        menuBar.updateButtons();
    }

    @Override
    public void setVisible(boolean visible) {
        if (visible == isVisible()) {
            return;
        }
        super.setVisible(visible);
        menuBar.resetContent();
    }
}