1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 package javax.microedition.lcdui;

    18 

    19 abstract class FormLayoutPolicy

    20 {

    21 

    22     /**

    23      * Layouts the Form.

    24      *

    25      * @param startItem item from which to start Layout;

    26      */

    27     abstract void layoutForm(int startItem);

    28 

    29     /**

    30      * Set focus to an item.

    31      */

    32     abstract void setCurrentItem(Item item);

    33 

    34     /**

    35      * Called when Form becomes current Displayable.

    36      */

    37     abstract void handleShowCurrentEvent();

    38 

    39     /**

    40      * Called when Form stops being current Displayable.

    41      */

    42     abstract void handleHideCurrentEvent();

    43 

    44     /**

    45      * Called when Form is being resized.

    46      *

    47      * @param width new width

    48      * @param height new height

    49      */

    50     abstract void handleResizeEvent(int width, int height);

    51 

    52     /**

    53      * Handle key event.

    54      *

    55      * @param keyCode key

    56      * @param keyType type

    57      */

    58     abstract void handleKeyEvent(int keyCode, int keyType);

    59 

    60     /**

    61      * Handle pointer event.

    62      *

    63      * @param x coordinate relative to scrolledComposite

    64      * @param y coordinate relative to scrolledComposite

    65      * @param type event type: SWT.MouseDown, SWT.MouseMove, SWT.MouseUp

    66      */

    67     abstract void handlePointerEvent(int x, int y, int type);

    68 

    69     /**

    70      * Set scrolling of form composite.

    71      */

    72     abstract void updateScrolling(int value, boolean keyNavi);

    73 

    74     /**

    75      * Get the layouted conrol of an item.

    76      *

    77      * @param item item

    78      * @return layouted control

    79      */

    80     abstract org.eclipse.swt.widgets.Control getItemControl(Item item);

    81 

    82     /**

    83      * Gets layouter that can layout the specified item.

    84      *

    85      * @param item Item to be layouted.

    86      * @return ItemLayouter or null if no Layouter found.

    87      */

    88     abstract ItemLayouter getLayouter(Item item);

    89 }