package tool.wizards;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.ui.INewWizard;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWizard;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.ide.IDE;
import tool.ToolPlugin;
/**
* This is a sample new wizard. Its role is to create a new file
* resource in the provided container. If the container resource
* (a folder or a project) is selected in the workspace
* when the wizard is opened, it will accept it as the target
* container. The wizard creates one file with the extension
* "cdf". If a sample multi-page editor (also available
* as a template) is registered for the same extension, it will
* be able to open it.
*/
public class NewClassWizard extends Wizard implements INewWizard {
private NewClassWizardPage page;
private ISelection selection;
/**
* Constructor for NewPlanWizard.
*/
public NewClassWizard() {
super();
setNeedsProgressMonitor(true);
}
/**
* Adding the page to the wizard.
*/
public void addPages() {
page = new NewClassWizardPage(selection);
addPage(page);
}
/**
* This method is called when 'Finish' button is pressed in
* the wizard. We will create an operation and run it
* using wizard as execution context.
*/
public boolean performFinish() {
final String containerName = page.getContainerName();
final String fileName = page.getFileName();
IRunnableWithProgress op = new IRunnableWithProgress() {
public void run(IProgressMonitor monitor) throws InvocationTargetException {
try {
doFinish(containerName, fileName, monitor);
} catch (CoreException e) {
throw new InvocationTargetException(e);
} finally {
monitor.done();
}
}
};
try {
getContainer().run(true, false, op);
} catch (InterruptedException e) {
return false;
} catch (InvocationTargetException e) {
Throwable realException = e.getTargetException();
ToolPlugin.showError("Error creating Class", realException);
return false;
}
return true;
}
/**
* The worker method. It will find the container, create the
* file if missing or just replace its contents, and open
* the editor on the newly created file.
*/
private void doFinish(
String containerName,
String fileName,
IProgressMonitor monitor)
throws CoreException {
// create a cdf file
monitor.beginTask("Creating " + fileName, 2);
IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
IResource resource = root.findMember(new Path(containerName));
if (!resource.exists() || !(resource instanceof IContainer)) {
throwCoreException("Container \"" + containerName + "\" does not exist.");
}
IContainer container = (IContainer) resource;
final IFile fileCDF = container.getFile(new Path(fileName + ".cdf"));
try {
InputStream stream = openCDFStream(fileName);
if (fileCDF.exists()) {
fileCDF.setContents(stream, true, true, monitor);
} else {
fileCDF.create(stream, true, monitor);
}
stream.close();
} catch (IOException e) {
}
final IFile fileCEX = container.getFile(new Path(fileName + ".cex"));
try {
InputStream stream = openCEXStream(fileName);
if (fileCEX.exists()) {
fileCEX.setContents(stream, true, true, monitor);
} else {
fileCEX.create(stream, true, monitor);
}
stream.close();
} catch (IOException e) {
}
monitor.worked(1);
monitor.setTaskName("Opening CDF for editing...");
getShell().getDisplay().asyncExec(new Runnable() {
public void run() {
IWorkbenchPage page =
PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
try {
IDE.openEditor(page, fileCDF, true);
} catch (PartInitException e) {
}
}
});
monitor.worked(1);
monitor.setTaskName("Opening CEX for editing...");
getShell().getDisplay().asyncExec(new Runnable() {
public void run() {
IWorkbenchPage page =
PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
try {
IDE.openEditor(page, fileCDF, true);
} catch (PartInitException e) {
}
}
});
monitor.worked(1);
}
/**
* We will initialize file contents with a sample text.
*/
private InputStream openCDFStream(String fileName) {
String contents =
"begin CLASS;\n" +
"class " + fileName + " inherits from Framework.Object\n" +
"--Attributes start\n" +
"--Attributes end\n" +
"--Methods start\n" +
"has public method Init;\n" +
"--Methods end\n" +
"has property\n" +
" shared=(allow=off, override=on);\n" +
" transactional=(allow=off, override=on);\n" +
" monitored=(allow=off, override=on);\n" +
" distributed=(allow=off, override=on);\n" +
"end class;\n" +
"end CLASS;\n";
return new ByteArrayInputStream(contents.getBytes());
}
private InputStream openCEXStream(String fileName) {
String contents =
"------------------------------------------------------------\n" +
"method " + fileName + ".Init\n" +
"begin\n" +
"super.Init();\n" +
"end method;\n";
return new ByteArrayInputStream(contents.getBytes());
}
private void throwCoreException(String message) throws CoreException {
IStatus status =
new Status(IStatus.ERROR, "ToolEditor", IStatus.OK, message, null);
throw new CoreException(status);
}
/**
* We will accept the selection in the workbench to see if
* we can initialize from it.
* @see IWorkbenchWizard#init(IWorkbench, IStructuredSelection)
*/
public void init(IWorkbench workbench, IStructuredSelection selection) {
this.selection = selection;
}
}