Introduce Binder.setReadOnly() (#8241)

Closes #8232

2 files changed, 80 insertions, 0 deletions

diff --git a/server/src/main/java/com/vaadin/data/Binder.java b/server/src/main/java/com/vaadin/data/Binder.java
index 4695e372c1..7451c004ed 100644
--- a/server/src/main/java/com/vaadin/data/Binder.java
+++ b/server/src/main/java/com/vaadin/data/Binder.java
@@ -1909,6 +1909,23 @@ public class Binder<BEAN> implements Serializable {
     }
 
     /**
+     * Sets the read only state to the given value for all currently bound
+     * fields.
+     * <p>
+     * This is just a shorthand for calling setReadOnly for all currently bound
+     * fields. It means that fields bound after this method call won't be set
+     * read-only.
+     *
+     * @param fieldsReadOnly
+     *            true to set the fields to read only, false to set them to read
+     *            write
+     */
+    public void setReadOnly(boolean fieldsReadOnly) {
+        getBindings().stream().map(BindingImpl::getField)
+                .forEach(field -> field.setReadOnly(fieldsReadOnly));
+    }
+
+    /**
      * Returns the event router for this binder.
      *
      * @return the event router, not null
diff --git a/server/src/test/java/com/vaadin/data/BinderTest.java b/server/src/test/java/com/vaadin/data/BinderTest.java
index 1994821db0..e07aee9632 100644
--- a/server/src/test/java/com/vaadin/data/BinderTest.java
+++ b/server/src/test/java/com/vaadin/data/BinderTest.java
@@ -431,4 +431,67 @@ public class BinderTest extends BinderTestBase<Binder<Person>, Person> {
     public void noArgsConstructor_stringBind_throws() {
         binder.bind(new TextField(), "firstName");
     }
+
+    @Test
+    public void setReadOnly_unboundBinder() {
+        binder.forField(nameField).bind(Person::getFirstName,
+                Person::setFirstName);
+
+        binder.forField(ageField);
+
+        binder.setReadOnly(true);
+
+        Assert.assertTrue(nameField.isReadOnly());
+        Assert.assertFalse(ageField.isReadOnly());
+
+        binder.setReadOnly(false);
+
+        Assert.assertFalse(nameField.isReadOnly());
+        Assert.assertFalse(ageField.isReadOnly());
+    }
+
+    @Test
+    public void setReadOnly_boundBinder() {
+        binder.forField(nameField).bind(Person::getFirstName,
+                Person::setFirstName);
+
+        binder.forField(ageField)
+                .withConverter(new StringToIntegerConverter(""))
+                .bind(Person::getAge, Person::setAge);
+
+        binder.setBean(new Person());
+
+        binder.setReadOnly(true);
+
+        Assert.assertTrue(nameField.isReadOnly());
+        Assert.assertTrue(ageField.isReadOnly());
+
+        binder.setReadOnly(false);
+
+        Assert.assertFalse(nameField.isReadOnly());
+        Assert.assertFalse(ageField.isReadOnly());
+    }
+
+    @Test
+    public void setReadOnly_binderLoadedByReadBean() {
+        binder.forField(nameField).bind(Person::getFirstName,
+                Person::setFirstName);
+
+        binder.forField(ageField)
+                .withConverter(new StringToIntegerConverter(""))
+                .bind(Person::getAge, Person::setAge);
+
+        binder.readBean(new Person());
+
+        binder.setReadOnly(true);
+
+        Assert.assertTrue(nameField.isReadOnly());
+        Assert.assertTrue(ageField.isReadOnly());
+
+        binder.setReadOnly(false);
+
+        Assert.assertFalse(nameField.isReadOnly());
+        Assert.assertFalse(ageField.isReadOnly());
+    }
+
 }
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