Examples of DisplayProject.binding.value.ValueHolder

DisplayProject.binding.value.ValueHolder
A simple {@link DisplayProject.binding.value.ValueModel} implementation that holds a generic value. If the value changes, a PropertyChangeEvent is fired that can be observed using a PropertyChangeListener.
Differences in the old and new value can be checked either using == or #equals. The unbound property identityCheckEnabled determines which mechanism is used to check for changes in #setValue(Object). This check can be overriden for individual changes by the boolean parameter in #setValue(Object, boolean).
Constraints: The value is of type Object. @author Karsten Lentzsch @version $Revision: 1.8 $ @see ValueModel @see java.beans.PropertyChangeEvent @see java.beans.PropertyChangeListener @see DisplayProject.binding.beans.ExtendedPropertyChangeSupport Copyright (c) 2002-2005 JGoodies Karsten Lentzsch. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: o Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. o Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. o Neither the name of JGoodies Karsten Lentzsch nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

     * operations and report the fine grained ListDataEvents.
     *  
     * @param list        the initial list
     */
    public SelectionInList(List<?> list) {     
        this(new ValueHolder(list, true));
    }

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     * 
     * @throws NullPointerException 
     *     if <code>selectionHolder</code> is <code>null</code>
     */
    public SelectionInList(List<?> list, ValueModel selectionHolder) {     
        this(new ValueHolder(list, true), selectionHolder);
    }

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     */
    public SelectionInList(
            List<?> list, 
            ValueModel selectionHolder,
            ValueModel selectionIndexHolder) {     
        this(new ValueHolder(list, true), 
                selectionHolder,
                selectionIndexHolder);
    }

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     * using defaults for the selection holder and selection index holder.
     * 
     * @param listModel        the initial list model
     */
    public SelectionInList(ListModel listModel) {     
        this(new ValueHolder(listModel, true));
    }

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     * 
     * @throws NullPointerException 
     *     if <code>selectionHolder</code> is <code>null</code>
     */
    public SelectionInList(ListModel listModel, ValueModel selectionHolder) {     
        this(new ValueHolder(listModel, true), selectionHolder);
    }

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     */
    public SelectionInList(
            ListModel listModel, 
            ValueModel selectionHolder,
            ValueModel selectionIndexHolder) {     
        this(new ValueHolder(listModel, true), 
                selectionHolder, 
                selectionIndexHolder);
    }

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     * 
     * @throws NullPointerException 
     *     if <code>listHolder</code> is <code>null</code>
     */
    public SelectionInList(ValueModel listHolder) {     
        this(listHolder, new ValueHolder());
    }

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     */
    public SelectionInList(ValueModel listHolder, ValueModel selectionHolder) {
        this(
            listHolder,
            selectionHolder,
            new ValueHolder(new Integer(NO_SELECTION_INDEX)));
    }

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    }


    private ListElementValueModelConverter getElementConverter(String selectedItemProperty, List<ListElement> elements) {
        ValueModel selectedItem = getPropertyValueModel(selectedItemProperty);
        PropertyDescriptor descriptor = model.getPropertyDescriptor(selectedItemProperty);
        ValueHolder aHolder = new ValueHolder(elements, false);
        return new ListElementValueModelConverter(selectedItem, aHolder, descriptor.getPropertyType());
    }

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    private SelectionInList getSelectionInList(String selectedItemProperty, List<ListElement> elements, boolean pForceValidValue)
    {
        ValueModel selectedItem = getPropertyValueModel(selectedItemProperty);
        PropertyDescriptor descriptor = model.getPropertyDescriptor(selectedItemProperty);
        ValueHolder aHolder = new ValueHolder(elements, false);
        ListElementValueModelConverter elementConverter = new ListElementValueModelConverter(selectedItem, aHolder, descriptor.getPropertyType());
        elementConverter.setForceValidValue(pForceValidValue);
        SelectionInList selectionInList = new SelectionInList(aHolder, elementConverter);
        return selectionInList;
    }

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Related Classes of DisplayProject.binding.value.ValueHolder

DisplayProject.binding.beans.BeanAdapter

DisplayProject.binding.beans.IndirectPropertyChangeSupport

DisplayProject.binding.beans.PropertyAdapter

DisplayProject.binding.BindingManager

DisplayProject.binding.list.SelectionInList

DisplayProject.binding.ListElementValueModelConverter

DisplayProject.binding.PresentationModel

DisplayProject.DropListModel

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