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package com.itmill.toolkit.tests.testbench;
import java.io.File;
import java.net.URL;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import com.itmill.toolkit.Application;
import com.itmill.toolkit.data.Property;
import com.itmill.toolkit.data.util.HierarchicalContainer;
import com.itmill.toolkit.terminal.Sizeable;
import com.itmill.toolkit.ui.Component;
import com.itmill.toolkit.ui.CustomComponent;
import com.itmill.toolkit.ui.ExpandLayout;
import com.itmill.toolkit.ui.Label;
import com.itmill.toolkit.ui.Panel;
import com.itmill.toolkit.ui.SplitPanel;
import com.itmill.toolkit.ui.Tree;
import com.itmill.toolkit.ui.Window;
/**
* TestBench finds out testable classes within given java packages and adds them
* to menu from where they can be executed. Class is considered testable if it
* is of class CustomComponent.
*
* Note: edit TestBench.testablePackages array
*
* @author IT Mill Ltd.
*
*/
public class TestBench extends com.itmill.toolkit.Application implements
Property.ValueChangeListener {
// Add here packages which are used for finding testable classes
String[] testablePackages = { "com.itmill.toolkit.demo.testbench" };
HierarchicalContainer testables = new HierarchicalContainer();
Window mainWindow = new Window("TestBench window");
// Main layout consists of tree menu and body layout
SplitPanel mainLayout = new SplitPanel(SplitPanel.ORIENTATION_HORIZONTAL);
Tree menu;
Panel bodyLayout = new Panel();
HashMap itemCaptions = new HashMap();
public void init() {
// Add testable classes to hierarchical container
for (int p = 0; p < testablePackages.length; p++) {
testables.addItem(testablePackages[p]);
try {
List testableClasses = getTestableClassesForPackage(testablePackages[p]);
for (Iterator it = testableClasses.iterator(); it.hasNext();) {
Class t = (Class) it.next();
// ignore TestBench itself
if (t.equals(TestBench.class)) {
continue;
}
try {
testables.addItem(t);
itemCaptions.put(t, t.getName());
testables.setParent(t, testablePackages[p]);
continue;
} catch (Exception e) {
try {
testables.addItem(t);
itemCaptions.put(t, t.getName());
testables.setParent(t, testablePackages[p]);
continue;
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
menu = new Tree("Testables", testables);
for (Iterator i = itemCaptions.keySet().iterator(); i.hasNext();) {
Class testable = (Class) i.next();
// simplify captions
String name = testable.getName().substring(
testable.getName().lastIndexOf('.') + 1);
menu.setItemCaption(testable, name);
}
// expand all root items
for (Iterator i = menu.rootItemIds().iterator(); i.hasNext();) {
menu.expandItemsRecursively(i.next());
}
menu.addListener(this);
menu.setImmediate(true);
mainLayout.addComponent(menu);
bodyLayout.addStyleName("light");
bodyLayout.setHeight(100);
bodyLayout.setHeightUnits(Sizeable.UNITS_PERCENTAGE);
bodyLayout.setLayout(new ExpandLayout());
mainLayout.addComponent(bodyLayout);
mainLayout.setSplitPosition(30);
mainWindow.setLayout(mainLayout);
setMainWindow(mainWindow);
}
private Component createTestable(Class c) {
try {
Application app = (Application) c.newInstance();
app.init();
return app.getMainWindow().getLayout();
} catch (Exception e) {
try {
CustomComponent cc = (CustomComponent) c.newInstance();
return cc;
} catch (Exception e1) {
e1.printStackTrace();
return new Label("Cannot create custom component: "
+ e1.toString());
}
}
}
// Handle menu selection and update body
public void valueChange(Property.ValueChangeEvent event) {
bodyLayout.removeAllComponents();
bodyLayout.setCaption(null);
Object o = menu.getValue();
if (o != null && o instanceof Class) {
Class c = (Class) o;
String title = c.getName();
bodyLayout.setCaption(title);
bodyLayout.addComponent(createTestable(c));
} else {
// NOP node selected or deselected tree item
}
}
/**
* Return all testable classes within given package. Class is considered
* testable if it's superclass is CustomComponent.
*
* @param packageName
* @return
* @throws ClassNotFoundException
*/
public static List getTestableClassesForPackage(String packageName)
throws Exception {
ArrayList directories = new ArrayList();
try {
ClassLoader cld = Thread.currentThread().getContextClassLoader();
if (cld == null) {
throw new ClassNotFoundException("Can't get class loader.");
}
String path = packageName.replace('.', '/');
// Ask for all resources for the path
Enumeration resources = cld.getResources(path);
while (resources.hasMoreElements()) {
URL url = (URL) resources.nextElement();
directories.add(new File(url.getFile()));
}
} catch (Exception x) {
throw new Exception(packageName
+ " does not appear to be a valid package.");
}
ArrayList classes = new ArrayList();
// For every directory identified capture all the .class files
for (Iterator it = directories.iterator(); it.hasNext();) {
File directory = (File) it.next();
if (directory.exists()) {
// Get the list of the files contained in the package
String[] files = directory.list();
for (int j = 0; j < files.length; j++) {
// we are only interested in .class files
if (files[j].endsWith(".class")) {
// removes the .class extension
String p = packageName + '.'
+ files[j].substring(0, files[j].length() - 6);
Class c = Class.forName(p);
if (c.getSuperclass() != null) {
if ((c.getSuperclass()
.equals(com.itmill.toolkit.ui.CustomComponent.class))) {
classes.add(c);
}
}
}
}
}
}
return classes;
}
}
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