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/*******************************************************************************
* Copyright (c) 2013 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.e4.tools.event.spy.ui;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.e4.tools.event.spy.model.CapturedEventFilter;
import org.eclipse.e4.tools.event.spy.model.ItemToFilter;
import org.eclipse.e4.tools.event.spy.model.Operator;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.FocusListener;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Link;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.ToolTip;
public class CapturedEventFilters {
private final static String NOT_SELECTED_VALUE = "-- expected value --";
private final Composite control;
private Text valueText;
private Combo itemToFilterCombo;
private Combo operatorCombo;
private ToolTip validationErrorToolTip;
private List filters;
private Map<Integer, CapturedEventFilter> rawFilters;
/* Layout scheme:
*
* +-- control --------------------------------------------+
* | +-- New filter group -------------------------------+ |
* | | | |
* | | Capture event when|combo|combo|text|add filter | |
* | | | |
* | +---------------------------------------------------+ |
* | +-- Defined filter group ---------------------------+ |
* | | | |
* | | List | +-- composite -----------------+ | |
* | | | | remove selected | remove all | | |
* | | | +------------------------------+ | |
* | | | |
* | +---------------------------------------------------+ |
* +-------------------------------------------------------+
*
* */
//TODO: Fix layout data for groups
public CapturedEventFilters(Composite outer) {
control = new Composite(outer, SWT.NONE);
RowLayout layout = new RowLayout(SWT.VERTICAL);
layout.marginLeft = 0;
layout.fill = true;
control.setLayout(layout);
createNewFilterGroup(control);
createDefinedFiltersGroup(control);
}
private void createNewFilterGroup(Composite parent) {
Group newFilterGroup = new Group(parent, SWT.NONE);
newFilterGroup.setText("New filter:");
newFilterGroup.setLayout(new RowLayout(SWT.HORIZONTAL));
Label label = new Label(newFilterGroup, SWT.CENTER);
label.setText("Capture event when:");
itemToFilterCombo = new Combo(newFilterGroup, SWT.READ_ONLY);
for (ItemToFilter item: ItemToFilter.values()) {
itemToFilterCombo.add(item.toString());
}
itemToFilterCombo.select(0);
operatorCombo = new Combo(newFilterGroup, SWT.READ_ONLY);
for (Operator operator: Operator.values()) {
operatorCombo.add(operator.toString());
}
operatorCombo.select(0);
valueText = new Text(newFilterGroup, SWT.BORDER);
valueText.setLayoutData(new RowData(130, SWT.DEFAULT));
valueText.setText(NOT_SELECTED_VALUE);
valueText.addFocusListener(new FocusListener() {
public void focusLost(FocusEvent e) {
if (valueText.getText().trim().length() == 0) {
valueText.setText(NOT_SELECTED_VALUE);
}
}
public void focusGained(FocusEvent e) {
if (NOT_SELECTED_VALUE.equals(valueText.getText())) {
valueText.setText("");
}
}
});
Link link = new Link(newFilterGroup, SWT.NONE);
link.setText("<a>Add filter</a>");
link.addListener (SWT.Selection, new Listener() {
public void handleEvent(Event event) {
addNewFilter();
}
});
}
private void createDefinedFiltersGroup(Composite parent) {
Group definedFiltersGroup = new Group(parent, SWT.NONE);
definedFiltersGroup.setText("Defined filters (relation between filters is AND):");
definedFiltersGroup.setLayout(new RowLayout(SWT.HORIZONTAL));
filters = new List(definedFiltersGroup, SWT.BORDER);
filters.setLayoutData(new RowData(403, 84));
Composite composite = new Composite(definedFiltersGroup, SWT.NONE);
composite.setLayout(new RowLayout(SWT.VERTICAL));
Link link = new Link(composite, SWT.NONE);
link.setText("<a>Remove selected</a>");
link.addListener (SWT.Selection, new Listener() {
public void handleEvent(Event event) {
removeFilterAt(filters.getSelectionIndex());
}
});
link = new Link(composite, SWT.NONE);
link.setText("<a>Remove all</a>");
link.addListener (SWT.Selection, new Listener() {
public void handleEvent(Event event) {
removeAllFilters();
}
});
}
public Control getControl() {
return control;
}
@SuppressWarnings("unchecked")
public Collection<CapturedEventFilter> getFilters() {
return rawFilters == null || rawFilters.isEmpty()? Collections.EMPTY_LIST: rawFilters.values();
}
public boolean hasFilters() {
return rawFilters != null && !rawFilters.isEmpty();
}
public int getFiltersCount() {
return rawFilters == null? 0: rawFilters.size();
}
private void addNewFilter() {
ItemToFilter selectedItemToFilter =
ItemToFilter.toItem(itemToFilterCombo.getItem(itemToFilterCombo.getSelectionIndex()));
if (ItemToFilter.NotSelected.equals(selectedItemToFilter)) {
getTooltip().setText(String.format("%s is not selected", getFieldName(ItemToFilter.NotSelected)));
getTooltip().setVisible(true);
return;
}
Operator selectedOperator = Operator.toOperator(operatorCombo.getItem(operatorCombo.getSelectionIndex()));
if (Operator.NotSelected.equals(selectedOperator)) {
getTooltip().setText(String.format("%s is not selected", getFieldName(Operator.NotSelected)));
getTooltip().setVisible(true);
return;
}
String value = valueText.getText();
if (value.length() == 0 || value.equals(NOT_SELECTED_VALUE)) {
getTooltip().setText(String.format("%s is empty", getFieldName(NOT_SELECTED_VALUE)));
getTooltip().setVisible(true);
return;
}
CapturedEventFilter eventFilter = null;
try {
eventFilter = new CapturedEventFilter(selectedItemToFilter, selectedOperator, value);
} catch(IllegalArgumentException exc) {
getTooltip().setText(exc.getMessage());
getTooltip().setVisible(true);
return;
}
if (rawFilters == null) {
rawFilters = new HashMap<Integer, CapturedEventFilter>();
}
String filterAsString = eventFilter.toString();
if (rawFilters.containsKey(filterAsString.hashCode())) {
getTooltip().setText(String.format("Filter has been already added: %s", filterAsString));
getTooltip().setVisible(true);
return;
}
filters.add(filterAsString);
rawFilters.put(filterAsString.hashCode(), eventFilter);
itemToFilterCombo.select(0);
operatorCombo.select(0);
valueText.setText(NOT_SELECTED_VALUE);
}
private ToolTip getTooltip() {
if (validationErrorToolTip == null) {
validationErrorToolTip = new ToolTip(Display.getCurrent().getActiveShell(), SWT.BALLOON | SWT.ICON_WARNING);
}
return validationErrorToolTip;
}
private void removeFilterAt(int index) {
if (index < 0) {
getTooltip().setText("Filter to remove is not selected");
getTooltip().setVisible(true);
return;
}
String filterAsString = filters.getItem(index);
filters.remove(index);
rawFilters.remove(filterAsString.hashCode());
}
private void removeAllFilters() {
if (rawFilters == null || rawFilters.isEmpty()) {
getTooltip().setText("Filter list is empty");
getTooltip().setVisible(true);
return;
}
filters.removeAll();
rawFilters.clear();
}
private String getFieldName(Object notSelectedName) {
String fieldName = notSelectedName.toString().replaceAll("-", "").trim();
return Character.toUpperCase(fieldName.charAt(0)) + fieldName.substring(1);
}
}
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