Hi *,
i would like to implement a testing issue for me. I add three panels with a
link on every panel. If i click one panel-link all panels should become green.
But i dont get that to work. The model in the AttributeModifier cant be
refreshed. What am i missing here?
Thank you for helping me understanding this great framework.
Per
<code>
package de.yhd.buma.refreshtests;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.Model;
public abstract class BasePanel extends Panel {
private List<IChangeListener> listeners = new ArrayList<IChangeListener>();
/**
*
* Constructor of BasePanel
* @param pId
*/
public BasePanel(String pId) {
super(pId);
}
/**
*
* Constructor of BasePanel
* @param pId
* @param pModel
*/
public BasePanel(String pId, IModel pModel) {
super(pId, pModel);
}
/**
* adds a changeListener to a panel
* @param pListener the listener of the panel
*/
public void addChangeListener(IChangeListener pListener) {
listeners.add(pListener);
}
/**
* removes a changeListener from a panel
* @param pListener the listener of the panel
*/
public void removeChangeListener(IChangeListener pListener) {
listeners.remove(pListener);
}
/**
* initialize the panel.
* @param pModel the model part of triad
*/
public abstract void initialize(Object pModel);
/**
* Refresh the data model.
* The model assigned to panel can be set thru this method.
* It´s the partner to the model assigned in initialize.
* The components displayed in panel will not initialized again.
* This has been implemented because [EMAIL PROTECTED]
#setModelObject(Object)}
* is final.
* @param pModel the model part of triad
*/
public void refreshModelObject(Serializable pModel) {
modelChanging();
setModel(new Model(pModel));
modelChanged();
}
/**
* Informs listeners of model content change event
*/
protected void fireContentChanged() {
fireContentChanged(null);
}
/**
* Informs listeners of model content change event
* @param pParameter parameter that have changed
*/
protected void fireContentChanged(Object pParameter) {
for (IChangeListener element : listeners) {
element.contentChanged(pParameter);
}
}
}
##########################################
package de.yhd.buma.refreshtests;
import java.io.Serializable;
public interface IChangeListener extends Serializable {
/**
* Method informs a listener if the content changed
* @param pParam
*/
void contentChanged(Object pParam);
}
##############################
package de.yhd.buma.refreshtests;
import java.io.Serializable;
public class RefreshLinkModel implements Serializable {
private static final long serialVersionUID = 1L;
private Boolean _highlite = false;
public void toggleHighlite() {
_highlite = !_highlite;
}
public Boolean getHighlite() {
return _highlite;
}
public void setHighlite(Boolean pHighlite) {
_highlite = pHighlite;
}
}
################################
package de.yhd.buma.refreshtests;
import java.io.Serializable;
import org.apache.wicket.AttributeModifier;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.AjaxLink;
import org.apache.wicket.model.Model;
public class RefreshLinkPanel extends BasePanel {
private static final long serialVersionUID = -4422790485992136492L;
/**
* Constructor of RefreshLinkPanel
*/
public RefreshLinkPanel(String pId) {
super(pId);
}
/**
*
* @see refreshtests.BasePanel#initialize(java.lang.Object)
*/
@Override
public void initialize(Object pModel) {
RefreshLinkModel model = (RefreshLinkModel) pModel;
refreshModelObject(model);
add(new AttributeModifier("style", true, new MyStyleModifierModel(model)));
AjaxLink link = new AjaxLink("link") {
private static final long serialVersionUID = 2337879573169864643L;
public void onClick(AjaxRequestTarget target) {
RefreshLinkModel m = (RefreshLinkModel) getParent().getModelObject();
m.toggleHighlite();
target.addComponent(this);
fireContentChanged();
}
};
add(link);
}
class MyStyleModifierModel extends Model {
private static final long serialVersionUID = 1L;
/**
* Constructor of RefreshLinkPanel.MyStyleModifierModel
*/
public MyStyleModifierModel(Serializable m) {
super(m);
}
/**
* @see org.apache.wicket.model.Model#getObject()
*/
public Object getObject() {
RefreshLinkModel m = (RefreshLinkModel) super.getObject();
if (m.getHighlite()) {
return "background:yellow;";
}
return "background:green;";
}
}
}
############################################
package de.yhd.buma.refreshtests;
public class RefreshPanel extends BasePanel {
private static final long serialVersionUID = 1L;
/**
* Constructor of RefreshPanel
*/
public RefreshPanel(String id) {
super(id);
}
/**
* @see refreshtests.BasePanel#initialize(java.lang.Object)
*/
@Override
public void initialize(Object pModel) {
RefreshLinkPanel one = new RefreshLinkPanel("one");
RefreshLinkPanel two = new RefreshLinkPanel("two");
RefreshLinkPanel three = new RefreshLinkPanel("three");
IChangeListener l = new MyChangeListener();
one.addChangeListener(l);
two.addChangeListener(l);
three.addChangeListener(l);
one.initialize(new RefreshLinkModel());
two.initialize(createHighlited());
three.initialize(new RefreshLinkModel());
add(one);
add(two);
add(three);
}
private RefreshLinkModel createHighlited() {
RefreshLinkModel modelOne = new RefreshLinkModel();
modelOne.toggleHighlite();
return modelOne;
}
class MyChangeListener implements IChangeListener {
private static final long serialVersionUID = 1L;
/**
*
* @see refreshtests.IChangeListener#contentChanged(java.lang.Object)
*/
public void contentChanged(Object pParam) {
RefreshLinkPanel p1 = (RefreshLinkPanel) get("one");
p1.refreshModelObject(createHighlited());
RefreshLinkPanel p2 = (RefreshLinkPanel) get("two");
p2.refreshModelObject(createHighlited());
RefreshLinkPanel p3 = (RefreshLinkPanel) get("three");
p3.refreshModelObject(createHighlited());
}
}
}
</code>
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