Example usage for com.vaadin.v7.data Container containsId

Introduction

In this page you can find the example usage for com.vaadin.v7.data Container containsId.

Prototype

public boolean containsId(Object itemId);

Source Link

Document

Tests if the Container contains the specified Item.

Usage

From source file:com.haulmont.cuba.web.widgets.CubaComboBox.java

License:Apache License

@Override
public void setContainerDataSource(Container newDataSource) {
    // CAUTION - copied from super method

    Object oldValue = getValue();

    if (newDataSource == null) {
        newDataSource = new IndexedContainer();
    }// w w w  .ja  va  2s. co  m

    getCaptionChangeListener().clear();

    if (items != newDataSource) {

        // Removes listeners from the old datasource
        if (items != null) {
            if (items instanceof Container.ItemSetChangeNotifier) {
                ((Container.ItemSetChangeNotifier) items).removeItemSetChangeListener(this);
            }
            if (items instanceof Container.PropertySetChangeNotifier) {
                ((Container.PropertySetChangeNotifier) items).removePropertySetChangeListener(this);
            }
        }

        // Assigns new data source
        items = newDataSource;

        // Clears itemIdMapper also
        itemIdMapper.removeAll();

        // Adds listeners
        if (items != null) {
            if (items instanceof Container.ItemSetChangeNotifier) {
                ((Container.ItemSetChangeNotifier) items).addItemSetChangeListener(this);
            }
            if (items instanceof Container.PropertySetChangeNotifier) {
                ((Container.PropertySetChangeNotifier) items).addPropertySetChangeListener(this);
            }
        }

        /*
         * We expect changing the data source should also clean value. See
         * #810, #4607, #5281
         */
        // Haulmont API
        // #PL-3098
        if (!newDataSource.containsId(oldValue))
            setValue(null);

        markAsDirty();
    }
}

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