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Java Source Code / Java Documentation » Ajax » GWT » com.google.gwt.user.client 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   com.google.gwt.user.client.History

History
public class History (Code)
This class allows you to interact with the browser's history stack. Each "item" on the stack is represented by a single string, referred to as a "token". You can create new history items (which have a token associated with them when they are created), and you can programmatically force the current history to move back or forward.

In order to receive notification of user-directed changes to the current history item, implement the com.google.gwt.user.client.HistoryListener interface and attach it via History.addHistoryListener .

Example





Method Summary
public static  voidaddHistoryListener(HistoryListener listener)
     Adds a listener to be informed of changes to the browser's history stack.
native public static  voidback()
     Programmatic equivalent to the user pressing the browser's 'back' button.
native public static  voidforward()
     Programmatic equivalent to the user pressing the browser's 'forward' button.
public static  StringgetToken()
     Gets the current history token.
public static  voidnewItem(String historyToken)
     Adds a new browser history entry.
public static  voidonHistoryChanged(String historyToken)
    
public static  voidremoveHistoryListener(HistoryListener listener)
     Removes a history listener.



Method Detail
addHistoryListener
public static void addHistoryListener(HistoryListener listener)(Code)
Adds a listener to be informed of changes to the browser's history stack.
Parameters:
  listener - the listener to be added



back
native public static void back()(Code)
Programmatic equivalent to the user pressing the browser's 'back' button.



forward
native public static void forward()(Code)
Programmatic equivalent to the user pressing the browser's 'forward' button.



getToken
public static String getToken()(Code)
Gets the current history token. The listener will not receive an onHistoryChanged() event for the initial token; requiring that an application request the token explicitly on startup gives it an opportunity to run different initialization code in the presence or absence of an initial token. the initial token, or the empty string if none is present.



newItem
public static void newItem(String historyToken)(Code)
Adds a new browser history entry. In hosted mode, the 'back' and 'forward' actions are accessible via the standard Alt-Left and Alt-Right keystrokes. Calling this method will cause History.onHistoryChanged to be called as well.
Parameters:
  historyToken - the token to associate with the new history item



onHistoryChanged
public static void onHistoryChanged(String historyToken)(Code)



removeHistoryListener
public static void removeHistoryListener(HistoryListener listener)(Code)
Removes a history listener.
Parameters:
  listener - the listener to be removed



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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