// Helper method to create the internals of the HTML Form (FormPanel)
// Submit form may be for new post, or for editing existing post
private FormPanel makeSubmitPostForm(final PostData post) {
final FormPanel submitFormPanel = new FormPanel();
VerticalPanel postFormPanel = new VerticalPanel();
postFormPanel.addStyleName("submitPostVertPanel");
submitFormPanel.add(postFormPanel);
// Name input
HorizontalPanel nameRow = new HorizontalPanel();
Label nameLabel = new Label("Name (First Last");
final TextBox nameTextbox = new TextBox();
nameRow.add(nameLabel);
nameRow.add(nameTextbox);
postFormPanel.add(nameRow);
// Title input
HorizontalPanel titleRow = new HorizontalPanel();
Label titleLabel = new Label("Title (e.g. car, bike, etc)");
final TextBox titleTextbox = new TextBox();
titleRow.add(titleLabel);
titleRow.add(titleTextbox);
postFormPanel.add(titleRow);
// Description input
HorizontalPanel descrRow = new HorizontalPanel();
Label descrLabel = new Label("Item Short description");
final TextArea descrText = new TextArea();
descrText.setCharacterWidth(40);
descrText.setVisibleLines(10);
descrRow.add(descrLabel);
descrRow.add(descrText);
postFormPanel.add(descrRow);
// Price input
HorizontalPanel priceRow = new HorizontalPanel();
Label priceLabel = new Label("Price ($)");
final TextBox priceTextbox = new TextBox();
priceTextbox.setVisibleLength(6);
priceRow.add(priceLabel);
priceRow.add(priceTextbox);
postFormPanel.add(priceRow);
// Address input
HorizontalPanel addressRow = new HorizontalPanel();
Label addressLabel = new Label("Address");
final TextArea addressText = new TextArea();
addressText.setCharacterWidth(40);
addressText.setVisibleLines(5);
addressRow.add(addressLabel);
addressRow.add(addressText);
postFormPanel.add(addressRow);
if (post != null) {
nameTextbox.setText(post.getSellerName());
titleTextbox.setText(post.getTitle());
descrText.setText(post.getDescription());
priceTextbox.setText("" + post.getPrice());
addressText.setText(post.getAddress());
}
// New widget for file upload
HorizontalPanel fileRow = new HorizontalPanel();
final FileUpload upload = new FileUpload();
if (post != null) {
Anchor link = new Anchor("Stored File", post.getURL());
link.setTarget("_blank");
fileRow.add(link);
upload.setTitle("Change Uploaded File");
} else upload.setTitle("Upload a File for Post");
fileRow.add(upload);
postFormPanel.add(fileRow);
// Submit button
Button submitButton;
if (post != null) {
submitButton = new Button("Submit Changes");
submitButton.setText("Submit Changes");
} else {
submitButton = new Button("Submit Ad");
submitButton.setText("Submit Ad");
}
submitButton.setStyleName("sideBarButton");
postFormPanel.add(submitButton);
// The submitFormPanel, when submitted, will trigger an HTTP call to the
// servlet. The following parameters must be set
submitFormPanel.setEncoding(FormPanel.ENCODING_MULTIPART);
submitFormPanel.setMethod(FormPanel.METHOD_POST);
// Set Names for the text boxes so that they can be retrieved from the
// HTTP call as parameters
nameTextbox.setName("name");
titleTextbox.setName("title");
descrText.setName("description");
priceTextbox.setName("price");
addressText.setName("address");
upload.setName("upload");
// Upon clicking "Submit" control goes to Controller
submitButton.addClickHandler(
new ClickHandler() {
public void onClick(ClickEvent event) {
if (post == null) control.handlePostFromSubmitForm(submitFormPanel);
else control.handlePostEditFromSubmitForm(post, submitFormPanel);
}
});
// This event handler is "fired" just before the Form causes a doPost
// message to server
submitFormPanel.addSubmitHandler(
new FormPanel.SubmitHandler() {
public void onSubmit(SubmitEvent event) {
// This event is fired just before the form is submitted.
// We can take this opportunity to perform validation.
if (nameTextbox.getText().length() == 0) {
Window.alert("The author is required.");
event.cancel();
}
if (titleTextbox.getText().length() == 0) {
Window.alert("The title is required.");
event.cancel();
}
Double price = Double.parseDouble(priceTextbox.getText());
if (priceTextbox.getText().length() == 0 || Double.isNaN(price)) {
Window.alert("The price is required. It must be a valid number");
event.cancel();
}
if (addressText.getText().length() == 0) {
Window.alert("The address is required.");
event.cancel();
}
if (upload.getFilename().length() == 0 && post == null) {
Window.alert("The upload file is required.");
event.cancel();
}
}
});
// The doPost message itself is sent from the Form and not intercepted
// by GWT.
// This event handler is "fired" just after the Form causes a doPost
// message to server
submitFormPanel.addSubmitCompleteHandler(
new FormPanel.SubmitCompleteHandler() {
public void onSubmitComplete(SubmitCompleteEvent event) {
if (post == null) {
submitFormPanel.reset();
nameTextbox.setFocus(true);
} else control.viewAdDataFromServer();
}
});
return submitFormPanel;
}
