diff options
Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/swing/RadioButtonModelAdapter.java')
| -rw-r--r-- | common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/swing/RadioButtonModelAdapter.java | 86 |
1 files changed, 50 insertions, 36 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/swing/RadioButtonModelAdapter.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/swing/RadioButtonModelAdapter.java index 83d3113454..25d50cd1a9 100644 --- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/swing/RadioButtonModelAdapter.java +++ b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/model/value/swing/RadioButtonModelAdapter.java @@ -1,5 +1,5 @@ /******************************************************************************* - * Copyright (c) 2007, 2009 Oracle. All rights reserved. + * Copyright (c) 2007, 2012 Oracle. 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. @@ -9,27 +9,28 @@ ******************************************************************************/ package org.eclipse.jpt.common.utility.internal.model.value.swing; -import org.eclipse.jpt.common.utility.internal.BidiFilter; -import org.eclipse.jpt.common.utility.internal.BidiTransformer; +import org.eclipse.jpt.common.utility.Filter; +import org.eclipse.jpt.common.utility.internal.Transformer; import org.eclipse.jpt.common.utility.internal.model.value.FilteringWritablePropertyValueModel; import org.eclipse.jpt.common.utility.internal.model.value.TransformationWritablePropertyValueModel; import org.eclipse.jpt.common.utility.model.value.WritablePropertyValueModel; /** - * This javax.swing.ButtonModel can be used to keep a listener - * (e.g. a JRadioButton) in synch with a (typically shared) - * PropertyValueModel that holds one value out of a set of values. - * - * NOTE: Do *not* use this model with a ButtonGroup, since the + * This {@link javax.swing.ButtonModel} can be used to keep a listener + * (e.g. a {@link javax.swing.JRadioButton}) in synch with a (typically shared) + * {@link org.eclipse.jpt.common.utility.model.value.PropertyValueModel} + * that holds one value out of a set of values. + * <p> + * <strong>NB:</strong> Do <em>not</em> use this model with a + * {@link javax.swing.ButtonGroup}, since the * shared value holder and the wrappers built by this adapter will * keep the appropriate radio button checked. Also, this allows * us to uncheck all the radio buttons in a group when the shared - * value is null. + * value is <code>null</code>. */ public class RadioButtonModelAdapter extends ToggleButtonModelAdapter { - // ********** constructors ********** /** @@ -60,8 +61,8 @@ public class RadioButtonModelAdapter * value to the button value. */ public static WritablePropertyValueModel<Boolean> buildBooleanHolder(WritablePropertyValueModel<Object> valueHolder, Object buttonValue) { - WritablePropertyValueModel<Object> filteringPVM = new FilteringWritablePropertyValueModel<Object>(valueHolder, new RadioButtonFilter(buttonValue)); - return new TransformationWritablePropertyValueModel<Object, Boolean>(filteringPVM, new RadioButtonTransformer(buttonValue)); + WritablePropertyValueModel<Object> filteringPVM = new FilteringWritablePropertyValueModel<Object>(valueHolder, Filter.Transparent.instance(), new SetRadioButtonFilter(buttonValue)); + return new TransformationWritablePropertyValueModel<Object, Boolean>(filteringPVM, new RadioButtonTransformer(buttonValue), new ReverseRadioButtonTransformer(buttonValue)); } @@ -85,42 +86,41 @@ public class RadioButtonModelAdapter } - // ********** inner classes ********** + // ********** filters ********** /** * This filter will only pass through a new value to the wrapped - * value holder when it matches the configured button value. + * value model when it matches the configured button value. */ - public static class RadioButtonFilter implements BidiFilter<Object> { + public static class SetRadioButtonFilter + implements Filter<Object> + { private Object buttonValue; - public RadioButtonFilter(Object buttonValue) { + public SetRadioButtonFilter(Object buttonValue) { super(); this.buttonValue = buttonValue; } /** - * always return the wrapped value - */ - public boolean accept(Object value) { - return true; - } - - /** * pass through the value to the wrapped property value model * *only* when it matches our button value */ - public boolean reverseAccept(Object value) { + public boolean accept(Object value) { return (value != null) && value.equals(this.buttonValue); } - } + + // ********** transformers ********** + /** - * This transformer will convert the wrapped value to Boolean.TRUE + * This transformer will convert a value to {@link Boolean#TRUE} * when it matches the configured button value. */ - public static class RadioButtonTransformer implements BidiTransformer<Object, Boolean> { + public static class RadioButtonTransformer + implements Transformer<Object, Boolean> + { private Object buttonValue; public RadioButtonTransformer(Object buttonValue) { @@ -129,23 +129,37 @@ public class RadioButtonModelAdapter } /** - * if the wrapped value matches our button value return true, - * if it is some other value return false; - * but if it is null simply pass it through because it will cause the - * button model's default value to be used + * If the specified value matches the button value return {@link Boolean#TRUE}, + * if it is some other value return {@link Boolean#FALSE}; + * but if it is <code>null</code> simply pass it through because it will + * cause the button model's default value to be used */ public Boolean transform(Object value) { return (value == null) ? null : Boolean.valueOf(value.equals(this.buttonValue)); } + } + + /** + * This transformer will convert {@link Boolean#TRUE} to the configured + * button value and {@link Boolean#FALSE} to <code>null</code>. + */ + public static class ReverseRadioButtonTransformer + implements Transformer<Boolean, Object> + { + private Object buttonValue; + + public ReverseRadioButtonTransformer(Object buttonValue) { + super(); + this.buttonValue = buttonValue; + } /** - * if the new value is true, pass through the our button value; - * otherwise pass through null + * If the specified value is {@link Boolean#TRUE}, + * pass through the our button value; + * otherwise pass through <code>null</code>. */ - public Object reverseTransform(Boolean value) { + public Object transform (Boolean value) { return (value.booleanValue()) ? this.buttonValue : null; } - } - } |