org.onebusaway.webapp.gwt.common.widgets.MapWidgetMaxSizeResizeHandler.java Source code

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Here is the source code for org.onebusaway.webapp.gwt.common.widgets.MapWidgetMaxSizeResizeHandler.java

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/**
 * Copyright (C) 2011 Brian Ferris <bdferris@onebusaway.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.
 */
package org.onebusaway.webapp.gwt.common.widgets;

import com.google.gwt.event.logical.shared.ResizeEvent;
import com.google.gwt.event.logical.shared.ResizeHandler;
import com.google.gwt.maps.client.MapWidget;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.DeferredCommand;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Widget;

public class MapWidgetMaxSizeResizeHandler implements ResizeHandler {

    private Widget _parent;

    private Widget _mapPanel;

    private MapWidget _map;

    public static Widget registerHandler(Widget parent, MapWidget map) {

        DivPanel mapPanel = new DivPanel();
        mapPanel.setSize("100%", "100%");
        mapPanel.add(map);

        map.setSize("100%", "100%");

        final MapWidgetMaxSizeResizeHandler handler = new MapWidgetMaxSizeResizeHandler(parent, mapPanel, map);
        DeferredCommand.addCommand(new Command() {

            public void execute() {
                ResizeEvent event = new ResizeEventImpl(Window.getClientWidth(), Window.getClientHeight());
                handler.onResize(event);
                Window.addResizeHandler(handler);
            }
        });

        return mapPanel;
    }

    private MapWidgetMaxSizeResizeHandler(Widget parent, Widget mapPanel, MapWidget map) {
        _parent = parent;
        _mapPanel = mapPanel;
        _map = map;
    }

    public void onResize(ResizeEvent arg0) {

        System.out.println("GO! w=" + _parent.getOffsetWidth() + " h=" + _parent.getOffsetHeight());

        _mapPanel.setWidth(_parent.getOffsetWidth() + "px");
        _mapPanel.setHeight(_parent.getOffsetHeight() + "px");

        _map.checkResizeAndCenter();
    }

    private static class ResizeEventImpl extends ResizeEvent {

        protected ResizeEventImpl(int width, int height) {
            super(width, height);
        }
    }
}