> <span jwcid="@Insert" value="</tr><tr>" raw="true"/>
I don't think it's ever a good idea to output partial HTML in your
page like this.
I'll throw one more implementation into the ring.
<!-- Usage Example -->
<t:gallery entriesPerRow="4" entry="var:galleryEntry" source="1..21">
${var:galleryEntry}
</t:gallery>
<!-- Gallery.tml -->
<div xmlns:t="http://tapestry.apache.org/schema/tapestry_5_1_0.xsd";>
<table>
<t:loop source="rows" value="columns">
<tr>
<t:loop source="columns" value="entry">
<td>
<t:body/>
</td>
<t:if test="needsPadding">
<td colspan="${padding}"> </td>
</t:if>
</t:loop>
</tr>
</t:loop>
</table>
</div>
/**
* Gallery.java
*/
import org.apache.tapestry5.annotations.Parameter;
import org.apache.tapestry5.annotations.Property;
import java.util.Iterator;
import java.util.NoSuchElementException;
public class Gallery {
@Parameter(required = true)
private Iterable source;
@Parameter(required = true)
@Property
private Object entry;
@Parameter(required = true)
private int entriesPerRow;
@Parameter
private int maxRows;
@Property
private WrappedIterable rows;
@Property
private LimitedIterable columns;
void setupRender() {
rows = new WrappedIterable(source);
}
public boolean getNeedsPadding() {
return !rows.iterator.hasNext() && columns.count < entriesPerRow;
}
public int getPadding() {
return entriesPerRow - columns.count;
}
public class WrappedIterable implements Iterable<LimitedIterable> {
private Iterator iterator;
int rows = 0;
private WrappedIterable(Iterable iterable) {
iterator = iterable.iterator();
}
public Iterator<LimitedIterable> iterator() {
return new Iterator<LimitedIterable>() {
public boolean hasNext() {
return (maxRows <= 0 || rows < maxRows) &&
iterator.hasNext();
}
public LimitedIterable next() {
if (hasNext()) {
++rows;
return new LimitedIterable(iterator, entriesPerRow);
}
throw new NoSuchElementException();
}
public void remove() {
throw new UnsupportedOperationException();
}
};
}
}
public class LimitedIterable implements Iterable {
int count = 0;
private final Iterator iterator;
private int limit;
private LimitedIterable(Iterator iterator, int limit) {
this.iterator = iterator;
this.limit = limit;
}
public Iterator iterator() {
return new Iterator<Object>() {
public boolean hasNext() {
return count < limit && iterator.hasNext();
}
public Object next() {
if (hasNext()) {
++count;
return iterator.next();
}
throw new NoSuchElementException();
}
public void remove() {
throw new UnsupportedOperationException();
}
};
}
}
}
Josh
On Sat, Sep 17, 2011 at 6:40 PM, Ken in Nashua <kcola...@live.com> wrote:
>
> Rob,
>
> Thanks for the constructive criticism.
>
> I will give this a whirl... like what I see...
>
> I am all for good form... and one of the nice things I am excited about T5 is
> that it promotes a ton of loose options for achieving good form.
>
> Appreciate the help and will let you know how I make out.
>
> - cheers
>
> KEN
>
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org
For additional commands, e-mail: users-h...@tapestry.apache.org
