Page Comparison

The XdevListSelect is a drop-down list from which the user can select a value. Multiple selections are possible. The drop-down list usually contains the values contained within a column of a database table.

The XdevNativeSelect XdevListSelect is a form component and can be persisted via the XdevFieldGroup. 

Important properties:

• Include Page
  Property Auto query data Property Auto query data

• Include Page
  Property ConnectedForm Property ConnectedForm

• Include Page
  Property Entity Property Entity

• Include Page
  Property ItemCaptionFromAnnotation Property ItemCaptionFromAnnotation

• Include Page
  Property ItemCaptionValue Property ItemCaptionValue

• Include Page
  Property Master component Property Master component

• Include Page
  Property MultiSelect Property MultiSelect

• ReadOnly 

• Include Page
  Property Required Property Required

• Include Page
  Property RequiredError Property RequiredError

• Include Page
  Property Rows Property Rows

• Include Page
  Property TabIndex Property TabIndex

...

• Include Page
  Event valueChange Event valueChange

Data binding:

• Daten-Container (Model) Data container (model)

  • XdevBeanItemContainer - Standard Daten-Container. Die Zuweisung erfolgt mit der Methode setContainerDataSource Standard data container. The allocation is set using the setContainerDataSource method.

    Code Block
    language java theme Confluence
    // Generates a new XdevBeanItemContainer 'productList' XdevBeanItemContainer<Product> productList = new XdevBeanItemContainer<Product>(Product.class);   // Sets the XdevBeanItemContainer listSelect.setContainerDataSource(productList);

    
    

  • XdevLazyEntityContainer - Wird ausschließlich von RapidClipse verwendet, wenn die Property Entity > Auto query data selektiert istRapidClipse exclusively uses this when the property Entity > Auto query data is selected.

Examples:

• Selektierung zurücksetzen - Setzt die Selektierung auf den Ausgangszustand. Dies löst ein valueChange Event ausReset selection - Sets the selection to the initial state. This triggers a valueChange event.

  Code Block
  language java theme Confluence
  listSelect.clear();

  
  

• Fokus setzen - Weist dem XdevListSelect den Focus zu. Dies kann ggf. ein focus Event auslösenSet focus - Allocates the focus to the XdevListSelect. This can trigger a focus event.

  Code Block
  language java theme Confluence
  listSelect.focus();

  
  

• Einträge hinzufügen - Weist dem XdevListSelect manuell Einträge hinzuAdd entries - Manually adds entries to the XdevListSelect.

  Code Block
  language java theme Confluence
  listSelect.addItem("Eintrag 1"); listSelect.addItem("Eintrag 2");

  Direkte Zuweisung mehrerer EinträgeDirect allocation of multiple entries.

  Code Block
  language java theme Confluence
  listSelect.addItems("Eintrag 1", "Eintrag 2", "Eintrag 3", "Eintrag 4");

  
  

• Selektiertes Objekt - Liefert das selektierte Objekt zurück (Entity) - Beispiel mit Category EntitySelected object - Returns the selected object (entity) - Example: category entity.

  Code Block
  language java theme Confluence
  BeanItem<Category> selectedItem = listSelect.getSelectedItem(); Category category = selectedItem.getBean();

  oderor

  Code Block
  language java theme Confluence
  Category Category = (Category)listSelect.getValue();

  oder - Liefert eine Liste aller selektierten Elemente or - Delivers a list of all selected elements

  Code Block
  language java theme Confluence
  List<BeanItem<Category>> selectedItems = listSelect.getSelectedItems();

  
  

• Elemente entfernen - Entfernt alle Elemente aus der XdevListSelectRemove elements - Removes all the elements from the XdevListSelect.

  Code Block
  language java theme Confluence
  listSelect.removeAllItems();

  
  

• Element selektieren - Automatisches Selektieren eines Eintrages - Beispiel: erster EintragSelect element - Automatic selection of an entry - Example: first entry.

  Code Block
  language java theme Eclipse
  Collection<?> itemIds = listSelect.getItemIds(); listSelect.setValue(((List<Category>)itemIds).get(0));

  
  

Alle All XdevListSelect MethodenMethods