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/*
@VaadinApache2LicenseForJavaFiles@
*/
package com.vaadin.terminal.gwt.client;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.user.client.Event;
/**
* Helper class for constructing a MouseEventDetails object from a
* {@link NativeEvent}.
*
* @author Vaadin Ltd
* @version @VERSION@
* @since 7.0.0
*
*/
public class MouseEventDetailsBuilder {
/**
* Construct a {@link MouseEventDetails} object from the given event
*
* @param evt
* The event to use as a source for the details
* @return a MouseEventDetails containing information from the event
*/
public static MouseEventDetails buildMouseEventDetails(NativeEvent evt) {
return buildMouseEventDetails(evt, null);
}
/**
* Construct a {@link MouseEventDetails} object from the given event
*
* @param evt
* The event to use as a source for the details
* @param relativeToElement
* The element whose position
* {@link MouseEventDetails#getRelativeX()} and
* {@link MouseEventDetails#getRelativeY()} are relative to.
* @return a MouseEventDetails containing information from the event
*/
public static MouseEventDetails buildMouseEventDetails(NativeEvent evt,
Element relativeToElement) {
MouseEventDetails mouseEventDetails = new MouseEventDetails();
mouseEventDetails.setType(Event.getTypeInt(evt.getType()));
mouseEventDetails.setClientX(Util.getTouchOrMouseClientX(evt));
mouseEventDetails.setClientY(Util.getTouchOrMouseClientY(evt));
mouseEventDetails.setButton(evt.getButton());
mouseEventDetails.setAltKey(evt.getAltKey());
mouseEventDetails.setCtrlKey(evt.getCtrlKey());
mouseEventDetails.setMetaKey(evt.getMetaKey());
mouseEventDetails.setShiftKey(evt.getShiftKey());
if (relativeToElement != null) {
mouseEventDetails.setRelativeX(getRelativeX(
mouseEventDetails.getClientX(), relativeToElement));
mouseEventDetails.setRelativeY(getRelativeY(
mouseEventDetails.getClientY(), relativeToElement));
}
return mouseEventDetails;
}
private static int getRelativeX(int clientX, Element target) {
return clientX - target.getAbsoluteLeft() + target.getScrollLeft()
+ target.getOwnerDocument().getScrollLeft();
}
private static int getRelativeY(int clientY, Element target) {
return clientY - target.getAbsoluteTop() + target.getScrollTop()
+ target.getOwnerDocument().getScrollTop();
}
}
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