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package org.eclipse.papyrus.infra.gmfdiag.properties.databinding;
import org.eclipse.core.databinding.observable.value.ValueDiff;
import org.eclipse.emf.ecore.EcorePackage;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.jface.preference.IPreferenceStore;
/**
*
* Class used to edit double preferences
*
*/
public class DoubleDiagramViewObservaleValue extends AbstractDiagramPreferencesObservableValue {
/**
*
* Constructor.
*
* @param diagram
* the edited diagram
* @param preferenceName
* the edited preference
* @param store
* the edited preference store
*/
public DoubleDiagramViewObservaleValue(final Diagram diagram, final String preferenceName, final IPreferenceStore store) {
super(diagram, preferenceName, store);
}
/**
*
* @see org.eclipse.core.databinding.observable.value.IObservableValue#getValueType()
*
* @return
*/
public final Object getValueType() {
return EcorePackage.eINSTANCE.getEFloat();
}
/**
*
* @see org.eclipse.core.databinding.observable.value.AbstractObservableValue#doGetValue()
*
* @return
*/
@Override
protected Object doGetValue() {
final IPreferenceStore wsPreferenceStore = getEditedPreferenceStore();
return wsPreferenceStore.getDouble(getEditedPreference());
}
/**
*
* @see org.eclipse.core.databinding.observable.value.AbstractObservableValue#doSetValue(java.lang.Object)
*
* @param value
*/
@Override
protected void doSetValue(final Object value) {
if (value instanceof Float) {
final IPreferenceStore wsPreferenceStore = getEditedPreferenceStore();
final double oldValue = (Double) doGetValue();
wsPreferenceStore.setValue(getEditedPreference(), ((Float) value).doubleValue());
final ValueDiff diff = new ValueDiff() {
@Override
public Object getOldValue() {
return oldValue;
}
@Override
public Object getNewValue() {
return ((Float) value).doubleValue();
}
};
fireValueChange(diff);
}
}
}
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