org.utgenome.gwt.utgb.client.track.operation.MenuOperation.java Source code

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Here is the source code for org.utgenome.gwt.utgb.client.track.operation.MenuOperation.java

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/*--------------------------------------------------------------------------
 *  Copyright 2007 utgenome.org
 *
 *  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.
 *--------------------------------------------------------------------------*/
//--------------------------------------
// GenomeBrowser Project
//
// MenuOperation.java
// Since: 2007/06/14
//
// $URL$ 
// $Author$ ssksn
//--------------------------------------
package org.utgenome.gwt.utgb.client.track.operation;

import java.util.ArrayList;

import org.utgenome.gwt.utgb.client.track.lib.old.Utilities;

import com.google.gwt.user.client.ui.DockPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.ScrollPanel;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.xml.client.Node;

/**
 * @author ssksn
 * 
 */
public class MenuOperation implements Operation {
    final String title;
    final ArrayList<MenuOperationItem> menuItems = new ArrayList<MenuOperationItem>();

    public MenuOperation(final Node menuOperationNode) {
        this(Utilities.getAttributeValue(menuOperationNode, "title"));
    }

    public MenuOperation(final String title) {
        this.title = title;
    }

    class MenuPopupWindow extends PopupPanel {
        public MenuPopupWindow(final String title, final boolean autoHide,
                final ArrayList<MenuOperationItem> _menuItems) {
            super(autoHide);

            setTitle(title);

            final DockPanel _panel = new DockPanel();
            _panel.setHorizontalAlignment(DockPanel.ALIGN_CENTER);
            _panel.setVerticalAlignment(DockPanel.ALIGN_MIDDLE);
            _panel.setStyleName("menu-popup");
            // _panel.setSize("150px", "150px");

            final Label titleLabel = new Label(title);
            titleLabel.setStyleName("menu-popup-title");
            _panel.add(titleLabel, DockPanel.NORTH);

            final VerticalPanel verticalPanel = new VerticalPanel();
            verticalPanel.setHorizontalAlignment(VerticalPanel.ALIGN_CENTER);
            verticalPanel.setVerticalAlignment(VerticalPanel.ALIGN_TOP);
            verticalPanel.setWidth("100%");

            { // add menu items
                final int itemNum = menuItems.size();
                for (int i = 0; i < itemNum; i++) {
                    final MenuOperationItem menuItem = (MenuOperationItem) (menuItems.get(i));

                    final Widget menuWidget = menuItem.getWidget(this);
                    menuWidget.setWidth("100%");
                    verticalPanel.add(menuWidget);
                }
            }

            final ScrollPanel scrollPanel = new ScrollPanel(verticalPanel);
            scrollPanel.setAlwaysShowScrollBars(false);
            _panel.add(scrollPanel, DockPanel.CENTER);
            scrollPanel.setWidth("100%");
            scrollPanel.setHeight("150px");
            setWidget(_panel);

            // setSize("150px", "150px");
        }
    }

    public void execute(Widget sender, int x, int y) {
        final MenuPopupWindow menuWindow = new MenuPopupWindow(title, true, menuItems);

        { // set location
            final int offsetX = sender.getAbsoluteLeft();
            final int offsetY = sender.getAbsoluteTop();

            menuWindow.setPopupPosition(offsetX + x, offsetY + y);
        }

        menuWindow.show();
    }

    public void addMenuItem(final MenuOperationItem menuItem) {
        menuItems.add(menuItem);
    }

}