package er.ajax;
import com.webobjects.appserver.WOAssociation;
import com.webobjects.appserver.WOContext;
import com.webobjects.appserver.WOElement;
import com.webobjects.appserver.WOResponse;
import com.webobjects.appserver._private.WOConstantValueAssociation;
import com.webobjects.appserver._private.WODynamicElementCreationException;
import com.webobjects.appserver._private.WOHTMLDynamicElement;
import com.webobjects.foundation.NSDictionary;
import com.webobjects.foundation.NSMutableDictionary;
/**
* AjaxFunctionButton is a convenience for calling javascript functions in response to an onclick on a button. When the
* link is inside of an AjaxUpdateContainer, you do not need to specify the ID of the container.
*
* So for instance, if you are inside of an AjaxInPlace with the id "blogForm" you can do
*
* <pre>
* &lt:wo:AjaxFunctionButton action = "edit">
* </pre>
*
* to go into edit mode.
*
* @binding disabled if true, the button is disabled
* @binding onclick the javascript to execute when the button is clicked.
* @binding action the type of event to fire ("update", "save", "edit", "cancel")
* @binding updateContainerID the id of the container to fire the event to (optional if inside of the container)
* @binding value the text of the button
*
* @author mschrag
*/
public class AjaxFunctionButton extends WOHTMLDynamicElement {
private WOAssociation _disabled;
private WOAssociation _action;
private WOAssociation _updateContainerID;
public AjaxFunctionButton(String aName, NSDictionary associations, WOElement template) {
super("input", AjaxFunctionButton.processAssociations(associations), template);
_disabled = _associations.removeObjectForKey("disabled");
_action = _associations.removeObjectForKey("action");
_updateContainerID = _associations.removeObjectForKey("updateContainerID");
if (_associations.objectForKey("onclick") != null && _action != null) {
throw new WODynamicElementCreationException("You cannot bind both 'action' and 'onclick' at the same time.");
}
if (_updateContainerID != null && _action == null) {
throw new WODynamicElementCreationException("If you bind 'updateContainerID', you must also bind 'action'.");
}
}
@Override
protected boolean hasContent() {
return false;
}
private boolean isDisabled(WOContext context) {
return _disabled != null && _disabled.booleanValueInComponent(context.component());
}
@Override
public void appendAttributesToResponse(WOResponse response, WOContext context) {
super.appendAttributesToResponse(response, context);
if (!isDisabled(context)) {
AjaxFunctionLink._appendAttributesToResponse(response, context, _action, _updateContainerID);
}
else {
response.appendContentString(" disabled");
}
}
protected static NSDictionary processAssociations(NSDictionary associations) {
NSMutableDictionary mutableAssociations = (NSMutableDictionary) associations;
mutableAssociations.setObjectForKey(new WOConstantValueAssociation("button"), "type");
return mutableAssociations;
}
}