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/*******************************************************************************
* Copyright (c) 2015, 2017 Obeo.
* 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:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.eef.core.internal.controllers;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import java.util.function.Consumer;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.eef.EEFLabelDescription;
import org.eclipse.eef.EEFWidgetAction;
import org.eclipse.eef.EEFWidgetDescription;
import org.eclipse.eef.EefPackage;
import org.eclipse.eef.common.api.utils.Util;
import org.eclipse.eef.core.api.EEFExpressionUtils;
import org.eclipse.eef.core.api.EditingContextAdapter;
import org.eclipse.eef.core.api.controllers.AbstractEEFWidgetController;
import org.eclipse.eef.core.api.controllers.IEEFLabelController;
import org.eclipse.eef.core.api.utils.EvalFactory;
import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.sirius.common.interpreter.api.IInterpreter;
import org.eclipse.sirius.common.interpreter.api.IVariableManager;
/**
* This class will be used in order to manage the behavior of the label.
*
* @author mbats
*/
public class EEFLabelController extends AbstractEEFWidgetController implements IEEFLabelController {
/**
* The description.
*/
private final EEFLabelDescription description;
/**
* The consumer of the new body.
*/
private Consumer<String> newValueConsumer;
/**
* The constructor.
*
* @param description
* The description
* @param variableManager
* The variable manager
* @param interpreter
* The interpreter
* @param editingContextAdapter
* The editing context adapter
*/
public EEFLabelController(EEFLabelDescription description, IVariableManager variableManager, IInterpreter interpreter,
EditingContextAdapter editingContextAdapter) {
super(variableManager, interpreter, editingContextAdapter);
this.description = description;
}
/**
*
* {@inheritDoc}
*
* @see org.eclipse.eef.core.api.controllers.AbstractEEFWidgetController#refresh()
*/
@Override
public void refresh() {
super.refresh();
String valueExpression = this.description.getValueExpression();
Object valueExpressionResult = this.newEval().evaluate(valueExpression);
String displayExpression = this.description.getDisplayExpression();
Optional.ofNullable(this.newValueConsumer).ifPresent(consumer -> {
if (!Util.isBlank(displayExpression)) {
Map<String, Object> variables = new HashMap<String, Object>();
variables.putAll(this.variableManager.getVariables());
variables.put(EEFExpressionUtils.EEFReference.VALUE, valueExpressionResult);
EvalFactory.of(this.interpreter, variables).logIfInvalidType(String.class).call(displayExpression, consumer);
} else if (valueExpressionResult != null) {
newValueConsumer.accept(valueExpressionResult.toString());
}
});
}
/**
* {@inheritDoc}
*
* @see org.eclipse.eef.core.api.controllers.AbstractEEFWidgetController#getDescription()
*/
@Override
protected EEFWidgetDescription getDescription() {
return this.description;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.eef.core.api.controllers.IEEFLabelController#onNewValue(org.eclipse.eef.core.api.controllers.IConsumer)
*/
@Override
public void onNewValue(Consumer<String> consumer) {
this.newValueConsumer = consumer;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.eef.core.api.controllers.IEEFLabelController#removeNewValueConsumer()
*/
@Override
public void removeNewValueConsumer() {
this.newValueConsumer = null;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.eef.core.api.controllers.IEEFLabelController#action(EEFWidgetAction)
*/
@Override
public IStatus action(final EEFWidgetAction action) {
return this.editingContextAdapter.performModelChange(() -> {
String expression = action.getActionExpression();
EAttribute eAttribute = EefPackage.Literals.EEF_WIDGET_ACTION__ACTION_EXPRESSION;
Map<String, Object> variables = new HashMap<String, Object>();
variables.putAll(this.variableManager.getVariables());
EvalFactory.of(this.interpreter, variables).logIfBlank(eAttribute).call(expression);
});
}
}
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