/*
* ARX: Powerful Data Anonymization
* Copyright 2012 - 2017 Fabian Prasser, Florian Kohlmayer and contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.deidentifier.arx.gui.view.impl.risk;
import java.util.HashSet;
import java.util.Set;
import org.deidentifier.arx.DataHandle;
import org.deidentifier.arx.gui.Controller;
import org.deidentifier.arx.gui.model.Model;
import org.deidentifier.arx.gui.model.ModelEvent;
import org.deidentifier.arx.gui.model.ModelEvent.ModelPart;
import org.deidentifier.arx.gui.resources.Resources;
import org.deidentifier.arx.gui.view.SWTUtil;
import org.deidentifier.arx.gui.view.def.IView;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.nebula.widgets.nattable.util.GUIHelper;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableItem;
/**
* This view allows to select a subset of the quasi-identifiers
*
* @author Fabian Prasser
*/
public class ViewRisksQuasiIdentifiers implements IView {
/** Controller */
private final Controller controller;
/** View */
private final Composite root;
/** View */
private final Table table;
/** View */
private final Label label;
/** Model */
private Model model;
/**
* Creates a new instance.
*
* @param parent
* @param controller
*/
public ViewRisksQuasiIdentifiers(final Composite parent,
final Controller controller) {
controller.addListener(ModelPart.INPUT, this);
controller.addListener(ModelPart.MODEL, this);
controller.addListener(ModelPart.SELECTED_QUASI_IDENTIFIERS, this);
this.controller = controller;
// Create group
root = parent;
root.setLayout(GridLayoutFactory.swtDefaults().numColumns(2).create());
// Create table
table = SWTUtil.createTable(parent, SWT.CHECK | SWT.V_SCROLL | SWT.H_SCROLL | SWT.BORDER);
table.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).span(2, 1).create());
table.addSelectionListener(new SelectionAdapter(){
public void widgetSelected(SelectionEvent arg0) {
fireEvent();
}
});
// Create button
Button button = new Button(parent, SWT.PUSH);
button.setLayoutData(SWTUtil.createGridData());
button.setText(Resources.getMessage("ViewRisksQuasiIdentifiers.0")); //$NON-NLS-1$
button.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent arg0) {
for (TableItem item : table.getItems()) {
item.setChecked(false);
}
fireEvent();
}
});
// Create label
label = new Label(parent, SWT.RIGHT);
label.setText(""); //$NON-NLS-1$
label.setLayoutData(SWTUtil.createFillHorizontallyGridData());
// Reset view
reset();
}
@Override
public void dispose() {
controller.removeListener(this);
}
@Override
public void reset() {
label.setText(""); //$NON-NLS-1$
for (TableItem item : table.getItems()) {
item.dispose();
}
SWTUtil.disable(root);
}
@Override
public void update(final ModelEvent event) {
if (event.part == ModelPart.MODEL) {
this.model = (Model) event.data;
update();
} else if (event.part == ModelPart.INPUT || event.part == ModelPart.SELECTED_QUASI_IDENTIFIERS) {
update();
}
}
/**
* Checks the selected items and fires an event on changes
*/
private void fireEvent() {
Set<String> selection = new HashSet<String>();
for (TableItem item : table.getItems()) {
if (item.getChecked()) {
selection.add(item.getText());
}
}
if (model != null) {
if (selection.equals(model.getSelectedQuasiIdentifiers())) {
return;
}
if (selection.size() <= model.getRiskModel().getMaxQiSize()) {
model.setSelectedQuasiIdentifiers(selection);
controller.update(new ModelEvent(ViewRisksQuasiIdentifiers.this, ModelPart.SELECTED_QUASI_IDENTIFIERS, selection));
label.setText(Resources.getMessage("ViewRisksQuasiIdentifiers.3") + (int)(Math.pow(2, selection.size())-1)); //$NON-NLS-1$
label.setForeground(GUIHelper.COLOR_BLACK);
} else {
label.setText(Resources.getMessage("ViewRisksQuasiIdentifiers.4") + (int)(Math.pow(2, selection.size())-1)); //$NON-NLS-1$
label.setForeground(GUIHelper.COLOR_RED);
}
}
}
/**
* Updates the view.
*
* @param node
*/
private void update() {
if (model == null || model.getInputConfig() == null ||
model.getInputConfig().getInput() == null || model.getSelectedQuasiIdentifiers() == null) {
return;
}
DataHandle handle = model.getInputConfig().getInput().getHandle();
root.setRedraw(false);
Set<String> selection = model.getSelectedQuasiIdentifiers();
for (TableItem item : table.getItems()) {
item.dispose();
}
for (int i = 0; i < handle.getNumColumns(); i++) {
TableItem item = new TableItem(table, SWT.NONE);
String value = handle.getAttributeName(i);
item.setText(value);
item.setChecked(selection.contains(value));
}
label.setText(Resources.getMessage("ViewRisksQuasiIdentifiers.5") + (int)(Math.pow(2, selection.size())-1)); //$NON-NLS-1$
root.setRedraw(true);
SWTUtil.enable(root);
}
}