reiern70 commented on a change in pull request #467:
URL: https://github.com/apache/wicket/pull/467#discussion_r610424557
##########
File path:
wicket-core/src/main/java/org/apache/wicket/markup/html/form/upload/FileUploadField.java
##########
@@ -47,6 +59,146 @@
{
private static final long serialVersionUID = 1L;
+ /**
+ * Description of file properties as in browser client side.
+ */
+ public static class FileDescription implements Serializable {
+
+ private static final long serialVersionUID = 1L;
+
+ private final String fileName;
+ private final long fileSize;
+ private final Date lastModified;
+ private final String mimeType;
+
+ public FileDescription(String fileName, long fileSize, long
lastModified, String mimeType) {
+ this.fileName = fileName;
+ this.fileSize = fileSize;
+ this.lastModified = new Date(lastModified);
+ this.mimeType = mimeType;
+ }
+
+ public String getFileName() {
+ return fileName;
+ }
+
+ public long getFileSize() {
+ return fileSize;
+ }
+
+ public Date getLastModified() {
+ return lastModified;
+ }
+
+ public String getMimeType() {
+ return mimeType;
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) return true;
+ if (o == null || getClass() != o.getClass()) return
false;
+ FileDescription that = (FileDescription) o;
+ return fileName.equals(that.fileName);
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(fileName);
+ }
+ }
+
+ /**
+ * {@link org.apache.wicket.ajax.form.OnChangeAjaxBehavior} that
streams back to server properties
+ * of the selected file (at client side), even when file has not yet
being uploaded.
+s *
+ * @author Ernesto Reinaldo Barreiro (reier...@gmail.com).
+ */
+ public static abstract class OnFileSelectedBehavior extends
OnChangeAjaxBehavior
+ {
+ private static final long serialVersionUID = 1L;
+
+ @Override
+ protected void onBind() {
+ super.onBind();
+ Component component = getComponent();
+ if (!(component instanceof FileUploadField))
+ {
+ throw new WicketRuntimeException("Behavior " +
getClass().getName()
+ + " can only be added to an
instance of a FileUploadField");
+ }
+ }
+
+ @Override
+ protected void onUpdate(AjaxRequestTarget target)
+ {
+ Request request = RequestCycle.get().getRequest();
+ List<FileDescription> fileDescriptions = new
ArrayList<>();
+ IRequestParameters parameters =
request.getRequestParameters();
+ String[] fileNames =
parse(parameters.getParameterValue("fileName"));
Review comment:
To myself: can we use getParameterValues instead?
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