add a hook to SubmitLink that allows to insert arbitrary JavaScript before code that submit the form ------------------------------------------------------------------------------------------------------
Key: WICKET-4199
URL: https://issues.apache.org/jira/browse/WICKET-4199
Project: Wicket
Issue Type: Improvement
Components: wicket
Affects Versions: 1.5.2
Reporter: Ernesto Reinaldo Barreiro
Priority: Minor
I need to execute some JavaScript before form is submmited and as method
getTriggerJavaScrip is final I have to do it like
SubmitLink link = new SubmitLink("link") {
private static final long serialVersionUID = 1L;
@Override
protected void onComponentTag(ComponentTag tag)
{
super.onComponentTag(tag);
// If we're disabled
if (!isLinkEnabled())
{
disableLink(tag);
}
else
{
if (tag.getName().equalsIgnoreCase("a"))
{
tag.put("href", "#");
}
tag.put("onclick",
getTriggerJavaScript1());
}
}
protected String getTriggerJavaScript1()
{
if (getForm() != null)
{
// find the root form - the one we are
really going to submit
Form<?> root = getForm().getRootForm();
StringBuilder sb = new
StringBuilder(100);
// my code
sb.append("document.getElementById('");
sb.append(description.getMarkupId());
sb.append("').value=CKEDITOR.instances.");
sb.append(description.getMarkupId());
sb.append(".getData();");
// end of my code
sb.append("var
e=document.getElementById('");
sb.append(root.getHiddenFieldId());
sb.append("'); e.name=\'");
sb.append(getInputName());
sb.append("'; e.value='x';");
sb.append("var
f=document.getElementById('");
sb.append(root.getMarkupId());
sb.append("');");
if
(shouldInvokeJavaScriptFormOnsubmit())
{
if (getForm() != root)
{
sb.append("var
ff=document.getElementById('");
sb.append(getForm().getMarkupId());
sb.append("');");
}
else
{
sb.append("var ff=f;");
}
sb.append("if (ff.onsubmit !=
undefined) { if (ff.onsubmit()==false) return false; }");
}
sb.append("f.submit();e.value='';e.name='';return false;");
return sb.toString();
}
else
{
return null;
}
}
};
This ugly and moreover if form submiting logic changes my extended link might
stop to work properly. I propose adding a method decorareTriggerJavaScript
that allows users to decorate the form submiting script. e.g. in my case
SubmitLink link = new SubmitLink("link") {
private static final long serialVersionUID = 1L;
@Override
protected void decorareTriggerJavaScript(StringBuilder
sb) {
StringBuilder sb1 = new StringBuilder(100);
sb1.append("document.getElementById('");
sb1.append(description.getMarkupId());
sb1.append("').value=CKEDITOR.instances.");
sb1.append(description.getMarkupId());
sb1.append(".getData();");
sb.insert(0, sb1.toString());
}
};
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