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 

    18 

    19 package com.nokia.s60tools.appdep.ui.wizards;

    20 

    21 import org.eclipse.jface.viewers.Viewer;

    22 import org.eclipse.jface.viewers.ViewerFilter;

    23 

    24 /**

    25  * Accepts in Build Target Selection -wizard page only the targets

    26  * that are non-empty or supported.

    27  * 

    28  * The enabling and disabling of filter is managed using <code>setFilterEnabled</code>

    29  * method because using <code>addFilter</code> and <code>removeFilter</code> methods

    30  * did not produce wanted UI behavior (transient state while adding/removing could be

    31  * detected by user by flicker and showing temporarily unwanted data set before filter

    32  * was fully applied).

    33  */

    34 public class BuildTargetSelectionNonEmptyAndNonSuppTargetFilter extends ViewerFilter {

    35 

    36 	

    37 	/**

    38 	 * By default the filter is enabled.

    39 	 */

    40 	boolean isFilterEnabled = true;

    41 	

    42 	/**

    43 	 * Constructor.

    44 	 * @param isFilterEnabled set to <code>true</code> to enable filter

    45 	 *                        and to <code>false</code> to disable filter.

    46 	 */

    47 	public BuildTargetSelectionNonEmptyAndNonSuppTargetFilter(boolean isFilterEnabled){

    48 		this.isFilterEnabled = isFilterEnabled;		

    49 	}

    50 	

    51 	/* (non-Javadoc)

    52 	 * @see org.eclipse.jface.viewers.ViewerFilter#select(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)

    53 	 */

    54 	@Override

    55 	public boolean select(Viewer viewer, Object parentElement, Object element) {

    56 		BuildTargetEntry targetEntry = (BuildTargetEntry) element;

    57 		// If filter is enabled...

    58 		if(isFilterEnabled){

    59 			// The target entry must be both

    60 			// - non-empty target, and

    61 			// - supported one.

    62 			return (!targetEntry.isEmptyTarget()) && (targetEntry.isSupportedTarget());	

    63 		}

    64 		// Otherwise accepting all

    65 		return true;

    66 	}

    67 

    68 	/**

    69 	 * Sets filter into enabled or disabled state.

    70 	 * @param isFilterEnabled set to <code>true</code> to enable filter

    71 	 *                        and to <code>false</code> to disable filter.

    72 	 */

    73 	public void setFilterEnabled(boolean isFilterEnabled) {

    74 		this.isFilterEnabled = isFilterEnabled;

    75 	}

    76 

    77 	

    78 }