Thanks, Jake. I tried to restructure my code to be more similar to
what you had, but still ended up with doing it not much different than
I had before. This time I populate the list of teachers from a static
list:
HTMLSelectElement teacherDropdown =
form.getElementTeacherDropdown();
HTMLOptionElement teacherName = form.getElementTeacherName();
teacherName.removeAttribute("id");
String[] teachers = new String[] { "Mrs. Wormwood", "Mr. Snyde", "Ms.
Ratchet" };
for(int i = 0;i < teachers.length;i++){
HTMLOptionElement teacherClone = (HTMLOptionElement)
teacherName.cloneNode(true);
teacherClone.setValue(new Integer(i).toString());
teacherClone.setLabel(teachers[i]);
teacherClone.getFirstChild().setNodeValue(teachers[i]);
teacherDropdown.add(teacherClone, null);
}
teacherDropdown.removeChild(teacherName);
I still can't seem to get away from using getFirstChild() to get ahold
of the text inside the <option> tag, like so:
<option id="teacherName">Mrs. Wormwood</option>
How do you access the "Mrs. Wormwood" part? My understanding is that
it is a child node of the <option> tag. Calling
teacherClone.setNodeValue("foo") didn't do anything. What node should
that be setting to "foo" when I call that?
Is there a way to make up a new node to add to the <option> tag? It
seems that if I have
<option id="teacherName"></option>
that getFirstChild() returns null. How can I expect to add text there
if there isn't an existing node for me to clone?
Also I tried to do use the <span> tag, as you mentioned, in my HTML:
<option id="teacherName"><span id="teacher">Mrs.
Wormwood</span></option>
When I run xmlc as
xmlc -keep -class org.poindextrose.school.xmlc.AddStudentForm
-sourceout ../WEB-INF/classes/ -nocompile -delete-class "DELETE_ME"
addStudent.html
I see
addStudent.html:61: Warning: discarding unexpected <span>
addStudent.html:61: Warning: discarding unexpected plain text
addStudent.html:61: Warning: discarding unexpected </span>
addStudent.html:61: Warning: discarding unexpected </option>
and no code gets generated for the 'teacher' span element.
Thanks,
-M@
On Monday, September 15, 2003, at 01:11 PM, Jacob Kjome wrote:
Very close. The standard XMLC way to deal with adding multiple
dynamic elements to the dom goes like this...
HTMLElement parentHook = xmlcObj.getElementParentHook();
HTMLElement templateRow = xmlcObj.getElementTemplateRow();
templateRow.removeAttribute("id");
Node clonedRow = null;
while (businessObject.hasMoreElements()) {
xmlcObj.setTextProductName(businessObject.getProductName());
clonedRow = templateRow.cloneNode(true);
parentHook.appendChild(clonedRow);
}
parentHook.removeChild(templateRow);
The above implies that the templateRow (whatever element it is, be it
a <td>, <li>, <option>, etc...) contains something like <span
id="ProductName">dummy data</span>. You keep on modifying data the
XMLC-generated methods and clone the node. After all that, you get
rid of the original template row, leaving only the nodes you inserted
containing real data. Note that we remove the id attribute of the
template row before doing any cloning since we don't want to have a
bunch of cloned nodes with the same id. This would result in invalid
HTML/XHTML.
Hope that makes sense. Note how the methodology above makes heavy use
of template hooks using id's. This makes the code more robust by have
an absolute reference to particular elements which can be checked at
compile time. Counting on getFirstChild() and such to get to nodes
that you assume to be there can fail if the template designer neglects
to structure things as you expect or leaves certain things out that
you assumed would be there.
Jake
At 11:03 AM 9/15/2003 -0700, you wrote:
In my HTML I have a dropdown list with one teacher option. I'm using
cloneNode() to create another <option> element and calling
cloneNode() on that teacher's <option> to create the text that goes
<option>right here</option>. I'm using cloneNode() because I don't
know how to go about creating a new object that implements
HTMLOptionElement. Is the way I'm doing this how its supposed to be
done, by using the w3c API, or is there a better way to instantiate
new XMLC specific objects and add them to the HTMLSelectElement?
Thanks,
-M@
HTMLSelectElement teacherDropdown =
form.getElementTeacherDropdown();
HTMLOptionElement teacher1 =
form.getElementTeacherOption();
HTMLOptionElement teacher2 = (HTMLOptionElement)
teacher1.cloneNode(false);
teacher2.appendChild(teacher1.getFirstChild().cloneNode(false));
teacher2.getFirstChild().setNodeValue("Mr. Snyde");
teacher2.setValue("2");
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