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/*****************************************************************************
* Copyright (c) 2012 CEA LIST.
*
*
* 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:
* Ansgar Radermacher (CEA LIST) - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.services.tracepoints.preferences;
import org.eclipse.swt.widgets.Composite;
/**
* A class derived from the MultipleChoiceFieldEditor.
* It encodes a multiple choice value in a binary way, i.e. bit I is set in the result, if the i-th choice is active.
* This class can also be used outside a preference page
*
* @author ansgar
*
*/
public class BinaryEncodedMChoiceFieldEditor extends MultipleChoiceFieldEditor {
/**
* @param name
* The preference ID
* @param labeltext
* the label text
* @param numColumns
* the number of columns
* @param labelsAndValues
* a two dimensional array containing the labels and values
* @param parent
* the parent SWT composite (field editor parent)
* @param useGroup
* display contents within a group
*/
public BinaryEncodedMChoiceFieldEditor(String name, String labeltext, int numColumns, String[][] labelsAndValues, Composite parent, boolean useGroup) {
super(name, labeltext, numColumns, labelsAndValues, parent, useGroup);
}
/**
* Convenience constructor, if used outside a preference page
*
* @param labeltext
* the label text
* @param numColumns
* the number of columns
* @param labelsAndValues
* a two dimensional array containing the labels and values
* @param parent
* the parent SWT composite (field editor parent)
* @param useGroup
* display contents within a group
*/
public BinaryEncodedMChoiceFieldEditor(String labeltext, int numColumns, String[][] labelsAndValues, Composite parent, boolean useGroup) {
super("", labeltext, numColumns, labelsAndValues, parent, useGroup); //$NON-NLS-1$
}
/**
* Use this function to initialize the set/non-set flags within the dialog from a binary encoded value,
* if you use the dialog outside a preference page
*
* @param currentValue
*/
public void setupViaString(String currentValue) {
setupControls(currentValue);
}
/**
* Use this function to get the results,
* if you use the dialog outside a preference page
*
* @return the result
*/
public String getResult() {
result = gatherSettings();
return result;
}
/**
* Convenience function returning an integer result instead of a String result
* (requires double conversion that is difficult to avoid, since calculateResults needs to return
* a string);
*
* @return
*/
public int getIntResult() {
if(getResult() == null) {
return 0;
}
return Integer.parseInt(getResult());
}
@Override
protected String calculateResult(String[][] settings) {
int traceActionValue = 0;
int index = 0;
for(String setting[] : settings) {
// [0] = name, [1] = value [2] = checked
if(setting[2].equals("true")) { //$NON-NLS-1$
traceActionValue += 1 << index;
}
index++;
};
return String.valueOf(traceActionValue);
}
@Override
protected boolean isSelected(String fieldName, String valueToSet) {
try {
int value = new Integer(valueToSet);
int index = 0;
for(String setting[] : labelsAndValues) {
// [0] = name, [1] = value [2] = checked
if(setting[0].equals(fieldName)) {
return (value & (1 << index)) > 0;
}
index++;
};
} catch (NumberFormatException e) {
}
return false;
}
}
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