/*
*
*
* Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package com.sun.midp.lcdui;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Image;
import com.sun.midp.events.EventQueue;
/**
* This class works around the fact that public classes can not
* be added to a javax package by an implementation.
*/
public interface DisplayEventHandler {
/**
* Preempt the current displayable with
* the given displayable until donePreempting is called.
*
* @param d displayable to show the user
* @param waitForDisplay if true this method will wait if the
* screen is being preempted by another thread.
*
* @return an preempt token object to pass to donePreempting done if prempt
* will happen, else null
*
* @exception SecurityException if the caller does not have permission
* the internal MIDP permission.
* @exception InterruptedException if another thread interrupts the
* calling thread while this method is waiting to preempt the
* display.
*/
public Object preemptDisplay(Displayable d, boolean waitForDisplay)
throws InterruptedException;
/**
* Display the displayable that was being displayed before
* preemptDisplay was called.
*
* @param preemptToken the token returned from preemptDisplay
*/
public void donePreempting(Object preemptToken);
/**
* Called by Display to notify DisplayEventHandler that
* Display has been sent to the background to finish
* preempt process if any.
*
* @param displayId id of Display
*/
public void onDisplayBackgroundProcessed(int displayId);
/**
* Initialize Display Event Handler
*
* @param theDisplayEventProducer producer for display events
* @param theForegroundController controls which display has the foreground
* @param theRepaintEventProducer producer for repaint events events
* @param theDisplayContainer container for display objects
*/
public void initDisplayEventHandler(
DisplayEventProducer theDisplayEventProducer,
ForegroundController theForegroundController,
RepaintEventProducer theRepaintEventProducer,
DisplayContainer theDisplayContainer);
/**
* Initialize per suite data of the display event handler.
*
* @param drawTrustedIcon true, to draw the trusted icon in the upper
* status bar for every display of this suite
*/
void initSuiteData(boolean drawTrustedIcon);
}
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