package edu.umd.cs.piccolox.swt;

import java.awt.Component;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Widget;

/**
 * Overridden to wrap an SWT KeyEvent
 * 
 * @author Lance Good
 */
public class PSWTKeyEvent extends KeyEvent {

    static Component fakeSrc = new Component() {
    };

    org.eclipse.swt.events.KeyEvent swtEvent;

    public PSWTKeyEvent(org.eclipse.swt.events.KeyEvent ke, int eventType) {
        super(fakeSrc, eventType, ke.time, 0, ke.keyCode, ke.character, KeyEvent.KEY_LOCATION_STANDARD);

        swtEvent = ke;
    }

    public Object getSource() {
        return swtEvent.getSource();
    }

    public boolean isShiftDown() {
        return (swtEvent.stateMask & SWT.SHIFT) != 0;
    }

    public boolean isControlDown() {
        return (swtEvent.stateMask & SWT.CONTROL) != 0;
    }

    public boolean isAltDown() {
        return (swtEvent.stateMask & SWT.ALT) != 0;
    }

    public int getModifiers() {
        int modifiers = 0;

        if (swtEvent != null) {
            if ((swtEvent.stateMask & SWT.ALT) != 0) {
                modifiers = modifiers | InputEvent.ALT_MASK;
            }
            if ((swtEvent.stateMask & SWT.CONTROL) != 0) {
                modifiers = modifiers | InputEvent.CTRL_MASK;
            }
            if ((swtEvent.stateMask & SWT.SHIFT) != 0) {
                modifiers = modifiers | InputEvent.SHIFT_MASK;
            }
        }

        return modifiers;
    }

    public int getModifiersEx() {
        int modifiers = 0;

        if (swtEvent != null) {
            if ((swtEvent.stateMask & SWT.ALT) != 0) {
                modifiers = modifiers | InputEvent.ALT_DOWN_MASK;
            }
            if ((swtEvent.stateMask & SWT.CONTROL) != 0) {
                modifiers = modifiers | InputEvent.CTRL_DOWN_MASK;
            }
            if ((swtEvent.stateMask & SWT.SHIFT) != 0) {
                modifiers = modifiers | InputEvent.SHIFT_DOWN_MASK;
            }
        }

        return modifiers;
    }

    public boolean isActionKey() {
        return false;
    }

    // /////////////////////////
    // THE SWT SPECIFIC EVENTS
    // /////////////////////////

    public Widget getWidget() {
        return swtEvent.widget;
    }

    public Display getDisplay() {
        return swtEvent.display;
    }

    public Object getData() {
        return swtEvent.data;
    }
}