Vaadin 8 example code changes: Server-Side Components - Common Component Features

Change-Id: Ibdf8fa97cdc4cb9f65c83ea01bb8d6c26dcb2ade

documentation/components/components-features.asciidoc

@@ -377,45 +377,37 @@ final Locale[] locales = Locale.getAvailableLocales();
 // language of the application can not be done before
 // this (and the selection) component are attached to
 // the application.
-final ComboBox select = new ComboBox("Select a language") {
+ComboBox<Locale> select = new ComboBox<>("Select a language") {
     @Override
     public void attach() {
         super.attach();
         setValue(getLocale());
     }
 };
-for (int i=0; i<locales.length; i++) {
-    select.addItem(locales[i]);
-    select.setItemCaption(locales[i],
-                          locales[i].getDisplayName(displayLocale));
-
-    // Automatically select the current locale
-    if (locales[i].equals(getLocale()))
-        select.setValue(locales[i]);
-}
+
+select.setItems(Arrays.asList(locales));
+select.setCaptionGenerator(locale -> locale.getDisplayName(displayLocale));
+select.setValue(getLocale());
+
 layout.addComponent(select);
 
 // Locale code of the selected locale
-final Label localeCode = new Label("");
+Label localeCode = new Label("");
 layout.addComponent(localeCode);
 
 // A date field which language the selection will change
-final InlineDateField date =
+InlineDateField date =
     new InlineDateField("Calendar in the selected language");
 date.setResolution(Resolution.DAY);
 layout.addComponent(date);
 
 // Handle language selection
-select.addValueChangeListener(new Property.ValueChangeListener() {
-    public void valueChange(ValueChangeEvent event) {
-        Locale locale = (Locale) select.getValue();
-        date.setLocale(locale);
-        localeCode.setValue("Locale code: " +
-                            locale.getLanguage() + "_" +
-                            locale.getCountry());
-    }
+select.onValueChange(locale -> {
+    date.setLocale(locale);
+    localeCode.setValue("Locale code: " +
+                        locale.getLanguage() + "_" +
+                        locale.getCountry());  
 });
-select.setImmediate(true);
 ----
 See the http://demo.vaadin.com/book-examples-vaadin7/book#component.features.locale.selection[on-line example, window="_blank"].
 
@@ -472,18 +464,14 @@ Client-side state modifications will not be communicated to the server-side and,
 more importantly, server-side field components will not accept changes to the
 value of a read-only [classname]#Field# component. The latter is an important
 security feature, because a malicious user can not fabricate state changes in a
-read-only field. This is handled at the level of [classname]#AbstractField# in
-[methodname]#setValue()#, so you can not change the value programmatically
-either. Calling [methodname]#setValue()# on a read-only field results in
-[classname]#Property.ReadOnlyException#.
-
-Also notice that while the read-only status applies automatically to the
-property value of a field, it does not apply to other component variables. A
-read-only component can accept some other variable changes from the client-side
+read-only field.
+
+Also notice that while the read-only status applies automatically to the value
+of a field, it does not apply to other component variables. A
+read-only component can accept some other state changes from the client-side
 and some of such changes could be acceptable, such as change in the scroll bar
-position of a [classname]#Table#. Custom widgets should check the read-only
-state for variables bound to business
-data.
+position of a [classname]#Table#. Custom components should check the read-only
+state for variables bound to business data.
 
 ////
 TODO: Note this also in the Advanced: Security section.
@@ -691,7 +679,8 @@ component allows inputting text, the focus and insertion point are indicated by
 a cursor. Pressing the Tab key moves the focus to the component next in the
 __focus order__.
 
-Focusing is supported by all [classname]#Field# components and also by the [classname]#Upload# component.
+Focusing is supported by all [classname]#Field# and [classname]#Select# components and also by
+components such as [classname]#Button#, [classname]#Upload#, and [classname]#TabSheet#.
 
 The focus order or __tab index__ of a component is defined as a positive integer
 value, which you can set with [methodname]#setTabIndex()# and get with