asquare.gwt.tests.coordinates.client.Demo.java Source code

Introduction

Here is the source code for asquare.gwt.tests.coordinates.client.Demo.java

Source

/*
 * Copyright 2006 Mat Gessel <mat.gessel@gmail.com>
 * 
 * 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 asquare.gwt.tests.coordinates.client;

import asquare.gwt.debug.client.*;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.MouseDownEvent;
import com.google.gwt.event.dom.client.MouseDownHandler;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.Image;

public class Demo implements EntryPoint {
    public void onModuleLoad() {
        DialogBox dialog = new DialogBox() {
            {
                addDomHandler(new MouseDownHandler() {
                    public void onMouseDown(MouseDownEvent event) {
                        Debug.println("DialogBox.onMouseDown(" + event.getX() + "," + event.getY() + ")");
                    }
                }, MouseDownEvent.getType());
            }
        };
        dialog.setText("Dialog Caption");
        Image image = new Image("one.gif");
        DOM.setStyleAttribute(image.getElement(), "height", "100px");
        DOM.setStyleAttribute(image.getElement(), "width", "200px");

        dialog.setWidget(image);
        dialog.show();
        dialog.setPopupPosition(200, 200);

        Debug.enable();
        if (!GWT.isScript())
            DebugConsole.getInstance().disable();

        new DebugHierarchyInspector().install();
        new DebugElementDumpInspector().install();
        new DebugEventListener('a', Event.ONMOUSEDOWN, "Absolute position inspector") {
            protected void doEvent(Event event) {
                Element target = DOM.eventGetTarget(event);
                Debug.println(getTagName(target) + "[absLeft=" + DOM.getAbsoluteLeft(target) + ",absTop="
                        + DOM.getAbsoluteTop(target) + "]");
            }
        }.install();

        new DebugEventListener('o', Event.ONMOUSEDOWN, "Offset hierarchy inspector") {
            protected void doEvent(Event event) {
                Element target = DOM.eventGetTarget(event);
                printOffsetHierarchy(target);
            }
        }.install();

        new DebugEventListener().install();
    }

    private native void printOffsetHierarchy(Element element) /*-{
                                                              var prefix = "+";
                                                              while(element)
                                                              {
                                                              Debug.println(prefix + element.tagName + " {offsetTop=" + element.offsetTop + ",scrollTop=" + element.scrollTop + "}");
                                                              element = element.offsetParent;
                                                              prefix = " " + prefix;
                                                              }
                                                              }-*/;

    private native String getTagName(Element element) /*-{
                                                      return element.tagName;
                                                      }-*/;
}