litesoft
@ 948
litesoft / trunk / GWT_Sandbox / FormEngine / src / com / temp / client / foundation / pavment / PlaceChanger.java
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package com.temp.client.foundation.pavment; import com.google.gwt.place.shared.*; import com.google.gwt.user.client.*; import com.temp.client.foundation.util.*; public interface PlaceChanger extends CurrentPlaceAccessor { enum GoToPlace { AlreadyThere, NoActivity, CurrentActivityRejectedLeaving } /** * Request a change to a new place. It is not a given that we'll actually get * there. First a {@link PlaceChangeRequestEvent} will be posted to the * event bus. If any receivers post a warning message to that event, it will * be presented to the user via {@link WindowClose#confirm(String)} (which is * typically a call to {@link Window#confirm(String)}). If she cancels, the * current location will not change. Otherwise, the location changes and a * {@link PlaceChangeEvent} is posted announcing the new place. * * @param pNewPlace a {@link Place} instance * * @return null if going to pNewPlace, !null means NOT going and why */ public GoToPlace goTo( Place pNewPlace ); } |