/examples/formpanel/FormPanelExample.py

 1from ui import RootPanel, TextArea, Label, Button, HTML, VerticalPanel,\
 2               HorizontalPanel, ListBox, FormPanel, FileUpload, TextBox
 3import Window
 4
 5class FormPanelExample:
 6    def onModuleLoad(self):
 7        # Create a FormPanel and point it at a service.
 8        self.form = FormPanel()
 9        self.form.setAction("/myFormHandler")
10
11        # Because we're going to add a FileUpload widget, we'll need to set the
12        # form to use the POST method, and multipart MIME encoding.
13        self.form.setEncoding(FormPanel.ENCODING_MULTIPART)
14        self.form.setMethod(FormPanel.METHOD_POST)
15
16        # Create a panel to hold all of the form widgets.
17        panel = VerticalPanel()
18        self.form.setWidget(panel)
19
20        # Create a TextBox, giving it a name so that it will be submitted.
21        self.tb = TextBox()
22        self.tb.setName("textBoxFormElement")
23        panel.add(self.tb)
24
25        # Create a ListBox, giving it a name and some values to be associated with
26        # its options.
27        lb = ListBox()
28        lb.setName("listBoxFormElement")
29        lb.addItem("foo", "fooValue")
30        lb.addItem("bar", "barValue")
31        lb.addItem("baz", "bazValue")
32        panel.add(lb)
33
34        # Create a FileUpload widget.
35        upload = FileUpload()
36        upload.setName("uploadFormElement")
37        panel.add(upload)
38
39        # Add a 'submit' button.
40        panel.add(Button("Submit", self))
41
42        # Add an event handler to the form.
43        self.form.addFormHandler(self)
44
45        RootPanel.get().add(self.form)
46
47    def onClick(self, sender):
48        self.form.submit()
49
50    def onSubmitComplete(self, event):
51        # When the form submission is successfully completed, this event is
52        # fired. Assuming the service returned a response of type text/plain,
53        # we can get the result text here (see the FormPanel documentation for
54        # further explanation).
55        Window.alert(event.getResults())
56
57    def onSubmit(self, event):
58        # This event is fired just before the form is submitted. We can take
59        # this opportunity to perform validation.
60        if (self.tb.getText().length == 0):
61            Window.alert("The text box must not be empty")
62            event.setCancelled(true)
63