X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Fbinding%2Fmutable%2FContainerOptionalBinding.java;fp=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Fbinding%2Fmutable%2FContainerOptionalBinding.java;h=df4fd5493b2fcf4368910546995ba926bce090ae;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/mutable/ContainerOptionalBinding.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/mutable/ContainerOptionalBinding.java new file mode 100644 index 000000000..df4fd5493 --- /dev/null +++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/mutable/ContainerOptionalBinding.java @@ -0,0 +1,72 @@ +/******************************************************************************* + * Copyright (c) 2010 Association for Decentralized Information Management in + * Industry THTH ry. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * VTT Technical Research Centre of Finland - initial API and implementation + *******************************************************************************/ +package org.simantics.databoard.binding.mutable; + +import org.simantics.databoard.binding.Binding; +import org.simantics.databoard.binding.OptionalBinding; +import org.simantics.databoard.binding.error.BindingException; +import org.simantics.databoard.type.OptionalType; + +/** + * Binds OptionalType to ValueContainer + * + * @author Toni Kalajainen + */ +public class ContainerOptionalBinding extends OptionalBinding { + + public ContainerOptionalBinding(Binding componentBinding) { + super(componentBinding); + } + + public ContainerOptionalBinding(OptionalType type, Binding componentBinding) { + super(type, componentBinding); + } + + @Override + public boolean hasValue(Object arg) { + return ((ValueContainer)arg).value != null; + } + + @Override + public Object getValue(Object arg) { + return ((ValueContainer)arg).value; + } + + @Override + public Object createNoValue() { + return new ValueContainer(); + } + + @Override + public Object createValue(Object value) throws BindingException { + ValueContainer result = new ValueContainer(); + result.value = value; + return result; + } + + @Override + public boolean isInstance(Object obj) { + return obj instanceof ValueContainer; + } + + @Override + public void setValue(Object optional, Object componentValue) + throws BindingException { + ((ValueContainer) optional).value = componentValue; + } + + @Override + public void setNoValue(Object optional) throws BindingException { + ((ValueContainer) optional).value = null; + } +} +