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/*******************************************************************************
* 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.
*
* Contributors:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.jpa.ui.internal.details;
import org.eclipse.jpt.common.ui.internal.widgets.IntegerCombo;
import org.eclipse.jpt.common.ui.internal.widgets.Pane;
import org.eclipse.jpt.common.utility.internal.model.value.PropertyAspectAdapter;
import org.eclipse.jpt.common.utility.model.value.PropertyValueModel;
import org.eclipse.jpt.common.utility.model.value.ModifiablePropertyValueModel;
import org.eclipse.jpt.jpa.core.JpaProject;
import org.eclipse.jpt.jpa.core.context.Generator;
import org.eclipse.jpt.jpa.core.context.IdMapping;
import org.eclipse.swt.widgets.Composite;
/**
* This is the generic pane for a generator.
*
* @see IdMapping
* @see Generator
* @see SequenceGeneratorComposite - A sub-pane
* @see TalbeGeneratorComposite - A sub-pane
*
* @version 2.2
* @since 1.0
*/
public abstract class GeneratorComposite<T extends Generator> extends Pane<T>
{
protected GeneratorBuilder<T> generatorBuilder;
protected GeneratorComposite(Pane<?> parentPane,
PropertyValueModel<T> subjectHolder,
Composite parent,
GeneratorBuilder<T> generatorBuilder) {
super(parentPane, subjectHolder, parent);
this.generatorBuilder = generatorBuilder;
}
/**
* Creates a new Generator. This makes it possible for the user
* to set values on a Generator before the model object has been created.
* Allows them not to first have to check the check box to enable the panel.
*/
protected final T buildGenerator() {
return this.generatorBuilder.addGenerator();
}
/**
* Retrieves the <code>Generator</code> and if it is <code>null</code>, then
* create it.
*
* @param subject The subject used to retrieve the generator
* @return The <code>Generator</code> which should never be <code>null</code>
*/
protected final T retrieveGenerator() {
T generator = getSubject();
if (generator == null) {
generator = this.buildGenerator();
}
return generator;
}
protected final ModifiablePropertyValueModel<String> buildGeneratorNameHolder() {
return new PropertyAspectAdapter<Generator, String>(getSubjectHolder(), Generator.NAME_PROPERTY) {
@Override
protected String buildValue_() {
return this.subject.getName();
}
@Override
public void setValue(String value) {
if (this.subject != null) {
setValue_(value);
return;
}
if (value.length() == 0) {
return;
}
retrieveGenerator().setName(value);
}
@Override
protected void setValue_(String value) {
if (value.length() == 0) {
value = null;
}
this.subject.setName(value);
}
};
}
protected void addAllocationSizeCombo(Composite container) {
new IntegerCombo<Generator>(this, getSubjectHolder(), container) {
@Override
protected String getHelpId() {
return null;//JpaHelpContextIds.MAPPING_COLUMN_LENGTH;
}
@Override
protected PropertyValueModel<Integer> buildDefaultHolder() {
return new PropertyAspectAdapter<Generator, Integer>(getSubjectHolder(), Generator.DEFAULT_ALLOCATION_SIZE_PROPERTY) {
@Override
protected Integer buildValue_() {
return Integer.valueOf(this.subject.getDefaultAllocationSize());
}
};
}
@Override
protected ModifiablePropertyValueModel<Integer> buildSelectedItemHolder() {
return new PropertyAspectAdapter<Generator, Integer>(getSubjectHolder(), Generator.SPECIFIED_ALLOCATION_SIZE_PROPERTY) {
@Override
protected Integer buildValue_() {
return this.subject.getSpecifiedAllocationSize();
}
@Override
public void setValue(Integer value) {
retrieveGenerator().setSpecifiedAllocationSize(value);
}
};
}
};
}
protected void addInitialValueCombo(Composite container) {
new IntegerCombo<Generator>(this, getSubjectHolder(), container) {
@Override
protected String getHelpId() {
return null;//JpaHelpContextIds.MAPPING_COLUMN_LENGTH;
}
@Override
protected PropertyValueModel<Integer> buildDefaultHolder() {
return new PropertyAspectAdapter<Generator, Integer>(getSubjectHolder(), Generator.DEFAULT_INITIAL_VALUE_PROPERTY) {
@Override
protected Integer buildValue_() {
return Integer.valueOf(this.subject.getDefaultInitialValue());
}
};
}
@Override
protected ModifiablePropertyValueModel<Integer> buildSelectedItemHolder() {
return new PropertyAspectAdapter<Generator, Integer>(getSubjectHolder(), Generator.SPECIFIED_INITIAL_VALUE_PROPERTY) {
@Override
protected Integer buildValue_() {
return this.subject.getSpecifiedInitialValue();
}
@Override
public void setValue(Integer value) {
retrieveGenerator().setSpecifiedInitialValue(value);
}
};
}
};
}
/**
* Retrieves the JPA project.
*
* @return The JPA project or <code>null</code> if the subject is <code>null</code>
*/
protected final JpaProject getJpaProject() {
return this.getSubject() == null ? null : this.getSubject().getJpaProject();
}
/**
* Returns the property name used to listen to the ID mapping when the
* generator changes.
*
* @return The property name associated with the generator
*/
protected abstract String getPropertyName();
public interface GeneratorBuilder<T> {
/**
* Add a generator to the model and return it
*/
T addGenerator();
}
}
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