com.kk_electronic.kkportal.core.ui.GlassPanel.java Source code

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Here is the source code for com.kk_electronic.kkportal.core.ui.GlassPanel.java

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/*
 * Copyright 2010 kk-electronic a/s. 
 * 
 * This file is part of KKPortal.
 *
 * KKPortal is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * KKPortal 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with KKPortal.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package com.kk_electronic.kkportal.core.ui;

import com.google.gwt.core.client.Scheduler;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.ui.IsWidget;
import com.google.gwt.user.client.ui.RootLayoutPanel;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;
import com.google.inject.Inject;

public class GlassPanel implements IsWidget {

    public static interface UIBinder extends UiBinder<Widget, GlassPanel> {
    };

    private Widget widget;
    @UiField
    VerticalPanel panel;
    private boolean showing = false;

    @Inject
    public GlassPanel(UIBinder binder) {
        widget = binder.createAndBindUi(this);
    }

    @Override
    public Widget asWidget() {
        return widget;
    }

    public void hide() {
        if (!showing)
            return;
        RootLayoutPanel.get().remove(widget);
        showing = false;
    }

    public void show() {
        if (showing)
            return;
        showing = true;
        final RootLayoutPanel r = RootLayoutPanel.get();
        Scheduler.get().scheduleDeferred(new Command() {

            @Override
            public void execute() {
                if (r.getWidgetIndex(widget) == -1) {
                    r.add(widget);
                }
            }
        });
    }

    public void addWidget(Widget x) {
        panel.add(x);
        show();
    }

    public void addWidget(IsWidget x) {
        addWidget(x.asWidget());
    }

    public void remove(Widget x) {
        if (panel.getWidgetCount() == 1) {
            hide();
        }
        panel.remove(x);
    }

    public void remove(IsWidget x) {
        remove(x.asWidget());
    }

    /**
     * @param x
     * @param i
     */
    public void addWidget(IsWidget x, int i) {
        addWidget(x.asWidget(), i);
    }

    /**
     * @param x
     * @param i
     */
    public void addWidget(Widget x, int i) {
        panel.insert(x, i);
        show();
    }
}