Examples of com.vaadin.data.Property$ValueChangeNotifier

com.vaadin.data.Property
The interface for adding and removing ValueChangeEvent listeners. If a Property wishes to allow other objects to receive ValueChangeEvent generated by it, it must implement this interface.
Note : The general Java convention is not to explicitly declare that a class generates events, but to directly define the addListener and removeListener methods. That way the caller of these methods has no real way of finding out if the class really will send the events, or if it just defines the methods to be able to implement an interface.
@author Vaadin Ltd. @since 3.0

            if (null == pd) {
                throw new IllegalStateException("Property " + propertyId
                        + " not found");
            }
            try {
                Property property = pd.createProperty(bean);
                return (IDTYPE) property.getValue();
            } catch (MethodException e) {
                throw new IllegalArgumentException(e);
            }
        }

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        this.propertyId = propertyId;
    }


    public boolean passesFilter(Object itemId, Item item)
            throws UnsupportedOperationException {
        final Property p = item.getItemProperty(getPropertyId());
        if (null == p) {
            return false;
        }
        return null == p.getValue();
    }

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        final int count = metadata.getColumnCount();
        final ArrayList<String> list = new ArrayList<String>(count);
        for (int i = 1; i <= count; i++) {
            final String columnName = metadata.getColumnName(i);
            list.add(columnName);
            final Property p = getContainerProperty(new Integer(1), columnName);
            propertyTypes.put(columnName,
                    p == null ? Object.class : p.getType());
        }
        propertyIds = Collections.unmodifiableCollection(list);
    }

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        this.ignoreCase = ignoreCase;
        this.onlyMatchPrefix = onlyMatchPrefix;
    }


    public boolean passesFilter(Object itemId, Item item) {
        final Property p = item.getItemProperty(propertyId);
        if (p == null || p.toString() == null) {
            return false;
        }
        final String value = ignoreCase ? p.toString().toLowerCase() : p
                .toString();
        if (onlyMatchPrefix) {
            if (!value.startsWith(filterString)) {
                return false;
            }

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        this.value = value;
        this.operation = operation;
    }


    public boolean passesFilter(Object itemId, Item item) {
        final Property p = item.getItemProperty(getPropertyId());
        if (null == p) {
            return false;
        }
        Object value = p.getValue();
        switch (getOperation()) {
        case EQUAL:
            return (null == this.value) ? (null == value) : this.value
                    .equals(value);
        case GREATER:

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        return field;
    }


    public Field createField(Container container, Object itemId,
            Object propertyId, Component uiContext) {
        Property containerProperty = container.getContainerProperty(itemId,
                propertyId);
        Class<?> type = containerProperty.getType();
        Field field = createFieldByPropertyType(type);
        field.setCaption(createCaptionByPropertyId(propertyId));
        return field;
    }

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                if (cols > 0) {
                    for (int j = 0; j < cols; j++) {
                        if (isColumnCollapsed(colids[j])) {
                            continue;
                        }
                        Property p = null;
                        Object value = "";
                        boolean isGenerated = columnGenerators
                                .containsKey(colids[j]);


                        if (!isGenerated) {
                            p = getContainerProperty(id, colids[j]);
                        }


                        // check in current pageBuffer already has row
                        int index = firstIndex + i;
                        if (p != null || isGenerated) {
                            if (index < firstIndexNotInCache
                                    && index >= pageBufferFirstIndex) {
                                // we have data already in our cache,
                                // recycle it instead of fetching it via
                                // getValue/getPropertyValue
                                int indexInOldBuffer = index
                                        - pageBufferFirstIndex;
                                value = pageBuffer[CELL_FIRSTCOL + j][indexInOldBuffer];
                                if (!isGenerated && iscomponent[j]
                                        || !(value instanceof Component)) {
                                    listenProperty(p, oldListenedProperties);
                                }
                            } else {
                                if (isGenerated) {
                                    ColumnGenerator cg = columnGenerators
                                            .get(colids[j]);
                                    value = cg
                                            .generateCell(this, id, colids[j]);


                                } else if (iscomponent[j]) {
                                    value = p.getValue();
                                    listenProperty(p, oldListenedProperties);
                                } else if (p != null) {
                                    value = getPropertyValue(id, colids[j], p);
                                    /*
                                     * If returned value is Component (via

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        final Field field = fields.get(id);
        if (field == null) {
            // field does not exist or it is not (yet) created for this property
            return ownProperties.get(id);
        }
        final Property property = field.getPropertyDataSource();


        if (property != null) {
            return property;
        } else {
            return field;

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        }


        // Adds all the properties to this form
        for (final Iterator<?> i = propertyIds.iterator(); i.hasNext();) {
            final Object id = i.next();
            final Property property = itemDatasource.getItemProperty(id);
            if (id != null && property != null) {
                final Field f = fieldFactory.createField(itemDatasource, id,
                        this);
                if (f != null) {
                    f.setPropertyDataSource(property);

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                        descriptions[i].toString());
            }
        }


        // Sets the property data source
        final Property property = oldField.getPropertyDataSource();
        oldField.setPropertyDataSource(null);
        newField.setPropertyDataSource(property);


        // Replaces the old field with new one
        layout.replaceComponent(oldField, newField);

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