I have created a GWT module that contains a modified DatePicker
widget.
My current web page features a bunch of search criteria. When the page
is loading, it uses a Velocity Template to detect when a certain
search field needs to be a date range field. A Velocity Macro is then
called from a file containing a bunch of Velocity Macros. This will
generate two text input boxes that, when clicked, will pop up a
calendar widget for the user to select a date. The dates selected will
be turned into a date range, i.e. January 1st - February 1st. My task
is to replace these text input boxes with GWT DateBox widgets.
In my GWT module I create and publish a JSNI method:
public void onModuleLoad() {
publish();
}
private static void createDatePicker(String divId, String inputId,
String name) {
RootPanel.get(divId).add(new DateBox(new DatePicker(), null, new
DateBox.DefaultFormat(DateTimeFormat.getFormat("yyyy/MM/dd")),
inputId, name ));
}
private native void publish() /*-{
$wnd.createDatePicker =
@com.mycompany.datepicker.client.DatePicker::createDatePicker(Ljava/
lang/String;Ljava/lang/String;Ljava/lang/String;);
}-*/;
In the Velocity Template that generates the search page, I include my
compiled GWT module's javascript file. This seems to work fine, as I
tested adding the widget to arbitrary divs in the onModuleLoad() event
and they appeared.
The Velocity template calls the macro file to generate the text inputs
wherever a date range field is located on the page. This is where I am
trying to replace the inputs with my DateBox widgets. The macro
originally just created two text input fields that ran a
showCalendar() javascript function when clicked. I have modified the
macro to look something like this:
<div id = $fieldName>
<script type="text/javascript">
createDatePicker('$fieldName', '${fieldName}_start_date',
'$fieldName');
</script>
<br />to <br />
<script type="text/javascript">
createDatePicker("$fieldName", "${fieldName}_end_date", "$fieldName");
</script>
</div>
$fieldName is a parameter passed to the Velocity Macro when it is
called.
The problem I'm having is that it cannot recognize that
createDatePicker is a method and as such I am getting an "Uncaught
ReferenceError: createDatePicker is not defined" error. When I create
a text input field inside the macro and have the onClick event fire my
method, it works and generates the DateBox widget each time the text
field is clicked.
I am very new to Javascript so it may be something simple I'm missing.
I'm starting to think GWT is just not capable of doing what I want it
to do in this situation...
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