Hi!
I finally came up with something that I have been looking for. It
might be more suitable for Wicket 1.5 because it's not very compatible
(read: not very lean) with current wicket:
Wicket Without Markup ;)
Well, yes there is markup for each component, but when you lay them
out on the page, the markup is component-contained.
So coding an application feels like a breeze for the Java developer,
and the HTML developer can strictly stick to styling the (contained)
components themselves.
Maybe I omitted something, but here comes the example. Let me know
what you think. Does it inspire any fresh ideas in you? Is this an old
idea? I recall listviews having been mentioned once as a solution for
producing markup-less code ... maybe I have re-invented the weel or
something.
HomePage.html:
<html>
<body>
<strong>Wicket Quickstart Archetype Homepage</strong>
<form wicket:id="form">
<wicket:container wicket:id="root-content-id"></wicket:container>
</form>
</body>
</html>
HomePage.java:
public class HomePage extends WebPage {
/** */
private static final long serialVersionUID = 1L;
private final MarkupNoLongerRequiredContainer rootContainer;
private final MarkupNoLongerRequiredContainer row1;
private final MarkupNoLongerRequiredContainer row2;
private final MarkupNoLongerRequiredContainer row3;
private final Form<Void> form;
/**
*
*/
public HomePage() {
add(form = new Form<Void>("form"));
form.add(rootContainer = new
MarkupNoLongerRequiredContainer("root-content-id"));
{
rootContainer.add(row1 = new
MarkupNoLongerRequiredContainer());
row1.add(new Label(GID, "Hello world"));
row1.add(0, new Label(GID,
"<br/>").setEscapeModelStrings(false));
// Change row before
row1.add(0, new Label(GID,
"<br/>").setEscapeModelStrings(false));
// Change row twice before
row1.add(new Label(GID,
"<br/>").setEscapeModelStrings(false)); //
Change row once after
}
{
rootContainer.add(row2 = new
MarkupNoLongerRequiredContainer());
row2.add(new Label(GID, "Type your name here:"));
row2.add(new InputField(new TextField<String>(GID,
Model.of("..."))));
}
{
rootContainer.add(row3 = new
MarkupNoLongerRequiredContainer());
row2.add(new Label(GID,
"<br/>").setEscapeModelStrings(false)); //
Change row before
row2.add(new InputField(new Button(GID,
Model.of("Clickme")) {
@Override
protected void onComponentTag(ComponentTag tag)
{
tag.put("type", "button");
super.onComponentTag(tag);
}
}));
}
}
}
InputField.html:
<wicket:panel>
<input wicket:id="generic-child-id"/>
</wicket:panel>
InputField.java:
public class InputField extends Panel {
/** */
private static final long serialVersionUID = 1L;
public <InputFieldDataType, InputFieldType extends
FormComponent<InputFieldDataType>> InputField(InputFieldType
inputFieldType) {
super(MarkupNoLongerRequiredContainer.GID);
add(inputFieldType);
}
}
MarkupNoLongerRequiredContainer.html:
<wicket:panel>
<wicket:container wicket:id="listview-id">
<wicket:container wicket:id="generic-child-id">
</wicket:container>
</wicket:container>
</wicket:panel>
MarkupNoLongerRequiredContainer.java:
public class MarkupNoLongerRequiredContainer extends Panel {
/** */
public static final String GID = "generic-child-id";
/** */
private static final long serialVersionUID = 1L;
private final List<Component> children = new ArrayList<Component>();
public MarkupNoLongerRequiredContainer() {
this(GID);
}
@Override
protected void onBeforeRender() {
super.onBeforeRender();
}
/**
* @param id
*/
public MarkupNoLongerRequiredContainer(String id) {
super(id);
super.add(new ListView<Component>("listview-id", children) {
/** */
private static final long serialVersionUID = 1L;
@Override
protected void populateItem(ListItem<Component>
listItem) {
Component component = listItem.getModelObject();
if (!component.getId().equals(GID)) {
throw new
IllegalStateException("Currently handles only children
with id " + GID);
}
listItem.add(component);
}
});
}
public boolean add(Component component) {
return children.add(component);
}
public void add(int index, Component element) {
children.add(index, element);
}
public boolean addAll(Collection<? extends Component> collection) {
return children.addAll(collection);
}
public boolean addAll(int index, Collection<? extends Component>
collection) {
return children.addAll(index, collection);
}
public void clear() {
children.clear();
}
public boolean contains(Object o) {
return children.contains(o);
}
public boolean containsAll(Collection<?> collection) {
return children.containsAll(collection);
}
public int indexOf(Object o) {
return children.indexOf(o);
}
public boolean isEmpty() {
return children.isEmpty();
}
public int lastIndexOf(Object o) {
return children.lastIndexOf(o);
}
public ListIterator<Component> listIterator() {
return children.listIterator();
}
public ListIterator<Component> listIterator(int index) {
return children.listIterator(index);
}
public boolean remove(Object o) {
return children.remove(o);
}
public Component remove(int index) {
return children.remove(index);
}
public boolean removeAll(Collection<?> collection) {
return children.removeAll(collection);
}
public boolean retainAll(Collection<?> collection) {
return children.retainAll(collection);
}
public Component set(int index, Component element) {
return children.set(index, element);
}
public List<Component> subList(int fromIndex, int toIndex) {
return children.subList(fromIndex, toIndex);
}
public Object[] toArray() {
return children.toArray();
}
public <T> T[] toArray(T[] a) {
return children.toArray(a);
}
}
**
Martin
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