its happening because you are using input type="submit" for the cancel
button, which of course submits the form. you should instead use a
link for cancel buttons. you can attach a link to a input
type="button" if you want cancel to still be a button btw...
-igor
On Thu, Feb 21, 2008 at 5:56 PM, Dan Kaplan <[EMAIL PROTECTED]> wrote:
> Hello,
>
>
>
> I've made an upload form and wanted to add a cancel button to it. The
> cancel button is clicked if the user decides he doesn't want to upload
> (before he uploads) and should redirect back to another page. This works
> pretty well except I noticed that if the user chooses a file then clicks the
> cancel button, the file starts uploading anyway! Here's the code that does
> this. I can't see why it's happening:
>
>
>
>
>
> import org.apache.wicket.authorization.strategies.role.Roles;
>
> import
> org.apache.wicket.authorization.strategies.role.annotations.AuthorizeInstant
> iation;
>
> import
> org.apache.wicket.extensions.ajax.markup.html.form.upload.UploadProgressBar;
>
> import org.apache.wicket.extensions.wizard.CancelButton;
>
> import org.apache.wicket.markup.html.WebPage;
>
> import org.apache.wicket.markup.html.form.Form;
>
> import org.apache.wicket.markup.html.form.TextField;
>
> import org.apache.wicket.markup.html.form.Button;
>
> import org.apache.wicket.markup.html.form.upload.FileUpload;
>
> import org.apache.wicket.markup.html.form.upload.FileUploadField;
>
> import org.apache.wicket.markup.html.panel.FeedbackPanel;
>
> import org.apache.wicket.model.PropertyModel;
>
> import org.apache.wicket.util.file.Files;
>
> import org.apache.wicket.util.file.Folder;
>
>
>
> import java.io.File;
>
>
>
> @AuthorizeInstantiation(Roles.USER)
>
> public class CreateAReport extends WebPage {
>
>
>
> private String reportName;
>
>
>
> public CreateAReport() {
>
> final FileUploadForm form = new FileUploadForm("form");
>
> final UploadProgressBar progressBar = new
> UploadProgressBar("progress", form);
>
>
>
> form.add(progressBar);
>
> form.add(new TextField("name", new PropertyModel(this,
> "reportName")).setRequired(true));
>
>
>
> Button submit = new Button("submitbutton") {
>
> public void onSubmit() {
>
> form.upload();
>
> setResponsePage(CustomReport.class);
>
> }
>
> };
>
> form.add(submit);
>
>
>
> Button cancel = new Button("cancelbutton") {
>
> public void onSubmit() {
>
> setResponsePage(ReportList.class);
>
> }
>
> };
>
> cancel.setDefaultFormProcessing(false);
>
> form.add(cancel);
>
>
>
> add(form);
>
>
>
> add(new FeedbackPanel("feedback"));
>
> }
>
>
>
> public String getReportName() {
>
> return reportName;
>
> }
>
>
>
> public void setReportName(String reportName) {
>
> this.reportName = reportName;
>
> }
>
>
>
> private class FileUploadForm extends Form {
>
> protected FileUploadField fileUploadField;
>
> protected File newFile;
>
>
>
> /**
>
> * Construct.
>
> *
>
> * @param name Component name
>
> */
>
> public FileUploadForm(String name) {
>
> super(name);
>
>
>
> // set this form to multipart mode (allways needed for uploads!)
>
> setMultiPart(true);
>
>
>
> // Add one file input field
>
> add(fileUploadField = new FileUploadField("fileInput"));
>
> fileUploadField.setRequired(true);
>
>
>
> // Set maximum size to 100K for demo purposes
>
> // setMaxSize(Bytes.kilobytes(100));
>
> }
>
>
>
> public void upload() {
>
> final FileUpload upload = fileUploadField.getFileUpload();
>
> if (upload != null) {
>
> // Create a new file
>
> newFile = new File(getUploadFolder(),
> upload.getClientFileName());
>
>
>
> // Check new file, delete if it allready existed
>
> checkFileExists(newFile);
>
> try {
>
> // Save to new file
>
> newFile.createNewFile();
>
> upload.writeTo(newFile);
>
> } catch (Exception e) {
>
> throw new IllegalStateException("Unable to write file: "
> + newFile.getAbsolutePath());
>
> }
>
> }
>
> }
>
>
>
> public File getFile() {
>
> return newFile;
>
> }
>
> }
>
>
>
> private void checkFileExists(File newFile) {
>
> if (newFile.exists()) {
>
> // Try to delete the file
>
> if (!Files.remove(newFile)) {
>
> throw new IllegalStateException("Unable to overwrite " +
> newFile.getAbsolutePath());
>
> }
>
> }
>
> }
>
>
>
> private Folder getUploadFolder() {
>
> Folder uploadFolder = new
> Folder(System.getProperty("java.io.tmpdir"), "wicket-uploads");
>
> // Ensure folder exists
>
> uploadFolder.mkdirs();
>
> return uploadFolder;
>
> }
>
>
>
> }
>
>
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