Re: Two small questions

[Sebastiaan van Erk]

Hi,

I decided to wrote a behavior to do what I want. Just in case anybody is interested, I will attach it to this email. You can use it like so: ExternalLink externalLink = new ExternalLink("externalLink", "http://www.google.com";);

        externalLink.add(new DisableLinkBehavior());
        externalLink.setEnabled(enabled);
        add(externalLink);



Regards,
Sebastiaan



Sebastiaan van Erk wrote:

The output is exactly the same as with Link. You can also specify "beforeDisabledLink" and "afterDisabledLink" strings in the constructor of DisableLinkBehavior if you don't like the default <i> </i>.

Hi,



Regards,
Sebastiaan

Jonathan Locke wrote:

It indeed looks more like an omission than a bug. I'll make a feature request out of it. :-)

yeah, more like an omission, but this is definitely a problem so far as i
recall.


Kent Tong wrote:

Sebastiaan van Erk wrote:

Ok, to answer my own question, it seems that ExternalLink does not have the ability to be disabled like Link.

Looks like a bug to me. I'd suggest that you submit a JIRA issue at
http://issues.apache.org/jira/browse/WICKET

package com.sebster.util.wicket;

import org.apache.wicket.Component;
import org.apache.wicket.behavior.IBehavior;
import org.apache.wicket.markup.ComponentTag;

@SuppressWarnings("nls")
public class LinkDisableBehavior implements IBehavior {

	private static final long serialVersionUID = 1L;

	private final String beforeDisabledLink;

	private final String afterDisabledLink;

	public LinkDisableBehavior() {
		this("<i>", "</i>");
	}

	public LinkDisableBehavior(final String beforeDisabledLink, final String afterDisabledLink) {
		this.beforeDisabledLink = beforeDisabledLink;
		this.afterDisabledLink = afterDisabledLink;
	}

	public String getBeforeDisabledLink() {
		return beforeDisabledLink;
	}

	public String getAfterDisabledLink() {
		return afterDisabledLink;
	}

	public void afterRender(final Component component) {
		if (!isLinkEnabled(component) && getAfterDisabledLink() != null) {
			component.getResponse().write(getAfterDisabledLink());
		}
	}

	public void beforeRender(final Component component) {
		if (!isLinkEnabled(component) && getBeforeDisabledLink() != null) {
			component.getResponse().write(getBeforeDisabledLink());
		}
	}

	public void bind(final Component component) {
		// Do nothing.
	}

	public void detach(final Component component) {
		// Do nothing.
	}

	public void exception(final Component component, final RuntimeException exception) {
		// Do nothing.
	}

	public boolean getStatelessHint(final Component component) {
		return true;
	}

	public boolean isEnabled(final Component component) {
		return true;
	}

	public boolean isTemporary() {
		return false;
	}

	public void onComponentTag(final Component component, final ComponentTag tag) {
		if (!isLinkEnabled(component)) {
			// if the tag is an anchor proper
			if (tag.getName().equalsIgnoreCase("a") || tag.getName().equalsIgnoreCase("link") || tag.getName().equalsIgnoreCase("area")) {
				// Change anchor link to span tag
				tag.setName("span");

				// Remove any href from the old link
				tag.remove("href");

				tag.remove("onclick");
			}
			// if the tag is a button or input
			else if ("button".equalsIgnoreCase(tag.getName()) || "input".equalsIgnoreCase(tag.getName())) {
				tag.put("disabled", "disabled");
			}
		}
	}

	protected boolean isLinkEnabled(final Component component) {
		return component.isEnabled() && component.isEnableAllowed();
	}

}

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