/*
* @(#)DisplayAccess.java 1.26 02/09/11 @(#)
*
* Copyright (c) 2000-2002 Sun Microsystems, Inc. All rights reserved.
* PROPRIETARY/CONFIDENTIAL
* Use is subject to license terms.
*/
package com.sun.midp.lcdui;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.Displayable;
import com.sun.midp.security.*;
/**
* Public interface for an object that is used to provide internal access
* to a Display object, across package boundaries. The object implements
* this interface, and is created inside the same package as Display, so
* that it has access to private instance data of Display as necessary.
*/
public interface DisplayAccess extends DisplayEvents {
/**
* Get the Display object that is associated with this DisplayAccess.
* @return Display The Display object.
*/
Display getDisplay();
/**
* Notifies the display that there is a change in its foreground
* status.
*
* @param hasForeground A flag indicating the foreground status.
*/
void foregroundNotify(boolean hasForeground);
/**
* Get the flag indicating that the most recent call to setCurrent
* was for a non-null Displayable.
* This allows the implementation of the hint provided
* to the display manager to determine which MIDlet to make the foreground.
*
* @return <code>true</code> if the MIDlet has a screen to display;
* otherwise <code>false</code> if MIDlet has indicated that it
* does not need the display.
*/
boolean wantsForeground();
// API's for accessing Display from Games Package
/**
* Called to get key mask of all the keys that were pressed.
* @return keyMask The key mask of all the keys that were pressed.
*/
int getKeyMask();
/**
* Flushes the entire off-screen buffer to the display.
* @param screen The Displayable
* @param offscreen_buffer The image buffer
* @param x The left edge of the region to be flushed
* @param y The top edge of the region to be flushed
* @param width The width of the region to be flushed
* @param height The height of the region to be flushed
*/
void flush(Displayable screen, Image offscreen_buffer,
int x, int y, int width, int height);
/**
* Set the trusted icon for this Display. When ever this display is in
* the foreground the given icon will be displayed in the area reserved for
* the trusted icon. Setting the icon to null will clear the trusted
* icon. Only callers with the internal MIDP permission can use this method.
*
* @param token security token of the call that has internal MIDP
* permission
* @param drawTrusted true to draw the trusted icon
*/
void setTrustedIcon(SecurityToken token, boolean drawTrusted);
}
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