Hi Shing.
Nice to see you getting into T5. ;-)
Not sure why your resources.renderInformalParameters(writer)
fails, but it's likely a clash with the RenderInformals mixin
in AbstractField. You should read the docs about rendering
multiple tags:
http://tapestry.apache.org/tapestry5/tapestry-core/apidocs/org/apache/tapestry/corelib/mixins/RenderInformals.html
I can confirm that writing a tag in beginRender and closing it
in afterRender (without calling renderInformalParameters) works
fine with informals because of AbstractField's RenderInformals.
Also, you don't need to add @SupportsInformalParameters.
Cheers,
Nick.
Shing Hing Man wrote:
I have subclassed AbstractField to make a colour
picker component,
which is essentially a read only text field with a
clickable icon next to it.
The component is working, but it does not render the
informal parameters.
With
<t:colorPicker size="3" color="color" />
I expect the rendered text field to have an attribute
of size="3".
The following is the code of my component.
Any assistance is appreciated!
Shing
@SupportsInformalParameters
public class ColorPicker extends AbstractField {
//private String clientId;
@Parameter(required = true, principal = true)
private String color;
@Inject
private Request request;
@Inject
private ComponentResources resources;
@Environmental
private PageRenderSupport support;
@Inject
@Path("classpath:/org/man/tapestry5/components/AnchorPosition.js")
private Asset anchorScript;
@Inject
@Path("classpath:/org/man/tapestry5/components/ColorPicker2.js")
private Asset colorPicker2Script;
@Inject
@Path("classpath:/org/man/tapestry5/components/PopupWindow.js")
private Asset popupWindowScript;
@Inject
@Path("classpath:/org/man/tapestry5/components/colorPicker.gif")
private Asset icon;
void beginRender(MarkupWriter writer) {
String name=getElementName();
String pickerName = name + "_pick";
String pickerColor = name + "_color";
// need to find out how to gte the form name
String formName = "form";
String targetField = "document." + formName + "." +
pickerColor;
String color = getColor();
if (color == null) {
color = "#FFFFFF"; // white
}
String style = "background:" + color + ";color:" +
color + ";";
writer.element("input", "type", "text", "name",
pickerColor,
"onFocus", "blur()", "style", style, "value",
color);
resources.renderInformalParameters(writer);
writer.end(); // end of input
writer.element("a", "href", "javascript:void(null)",
"name",
pickerName, "id", pickerName, "onclick",
"select_color("
+ targetField + "," + "'" + pickerName +
"'" +
")");
writer.element("img", "src", icon.toClientURL(),
"border", 0, "align",
"top");
writer.end(); // end of <img>
writer.end(); // end of <a>
support.addScriptLink(anchorScript);
support.addScriptLink(popupWindowScript);
support.addScriptLink(colorPicker2Script);
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
@Override
protected void processSubmission(FormSupport
formSupport, String elementName) {
color = request.getParameter(elementName +
"_color");
}
}
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