Hello all,
I'm having serious client side persistence problems. I have a border
component which has a property selection component. From there I can
select which page I want to goto, by default the home page is shown.
If I select a new page then the property selection does not show the
new page, but the main body of the page shows the selected page.
Obviously there is something I don't understand regarding client side
persistence.
I have included the source for a test web application I wrote. Does
any body have any suggestions?
--
Thanks
Jabbar Azam
//-- start of source code
---------------------------------------------------------------------------------------------------
Border.java
----------------
package com.technolog.page;
import org.apache.tapestry.BaseComponent;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.annotations.Persist;
import org.apache.tapestry.event.PageBeginRenderListener;
import org.apache.tapestry.event.PageEvent;
import com.technolog.model.PageSelectionModel;
/**
* This the parent component of all the other web pages. Every web
page is placed
* within this page. This allows the header, footer and navigation to
be modified
* without changing every page.
*
* @author Jabbar Azam
*
*/
public abstract class Border extends BaseComponent implements
PageBeginRenderListener{
@Persist("client:app")
public abstract String getPerSelectedPage();
public abstract void setPerSelectedPage(String page);
public abstract String getSelectedPage();
public abstract void setSelectedPage(String page);
public void selectedPage(IRequestCycle cycle) {
setPerSelectedPage(getSelectedPage());
cycle.activate(getSelectedPage());
}
public PageSelectionModel getPageSelectionModel() {
return new PageSelectionModel();
}
public void pageBeginRender(PageEvent event) {
if (!event.getRequestCycle().isRewinding()) {
setSelectedPage(getPerSelectedPage());
}
}
}
---------------------------------------------------------------------------------------
PageSelectionModel.java
------------------------------------
package com.technolog.model;
import java.io.Serializable;
import java.util.List;
import java.util.Vector;
import org.apache.tapestry.form.IPropertySelectionModel;
public class PageSelectionModel implements IPropertySelectionModel,
Serializable {
/**
*
*/
private static final long serialVersionUID = 5195300859295677036L;
protected List<String> pageList = new Vector<String>();
/**
*
* @param siteListDAO
* @param user
*/
public PageSelectionModel() {
pageList.add("Home");
pageList.add("Page1");
pageList.add("Page2");
pageList.add("Page3");
}
/**
*
*/
public int getOptionCount() {
return pageList.size();
}
/**
*
*/
public Object getOption(int idx) {
return pageList.get(idx);
}
/**
*
*/
public String getValue(int idx) {
return Integer.toString(idx);
}
/**
*
*/
public Object translateValue(String idx) {
return getOption(Integer.parseInt(idx));
}
public String getLabel(int idx) {
return (String)getOption(idx);
}
}
--------------------------------------------------------------------------------------------------------
Border.html
-----------------
<html>
<head jwcid="@Shell" title="test">
<title>Test</title>
</head>
<body jwcid="@Body">
<table>
<form jwcid="@Form" listener="listener:selectedPage"><tr><td><span
jwcid="pageSelection"/></td></tr></form>
<tr><td><span jwcid="@RenderBody"/></td></tr>
</table>
</body>
</html>
--------------------------------------------------------------------------------------------------------------
Border.jwc
---------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE component-specification
PUBLIC "-//Apache Software Foundation//Tapestry Specification 4.0//EN"
"http://jakarta.apache.org/tapestry/dtd/Tapestry_4_0.dtd";>
<!-- generated by Spindle, http://spindle.sourceforge.net -->
<component-specification class="com.technolog.page.Border"
allow-informal-parameters="no">
<component id="pageSelection" type="PropertySelection">
<binding name="model" value="pageSelectionModel"/>
<binding name="value" value="selectedPage"/>
<binding name="submitOnChange" value="literal:yes"/>
</component>
</component-specification>
-------------------------------------------------------------------------------------------------------------
Home.html
----------------
<span jwcid="$content$">
<span jwcid="@Border">
<h1>Home Page</h1>
</span>
</span>
--------------------------------------------------------------------------------------------------------------
Page1.html
-----------------
<span jwcid="$content$">
<span jwcid="@Border">
<h1>Page 1</h1>
</span>
</span>
-------------------------------------------------------------------------------------------------------------
Page 2.html
------------------
<span jwcid="$content$">
<span jwcid="@Border">
<h1>Page 2</h1>
</span>
</span>
-------------------------------------------------------------------------------------------------------------
Page3.html
-----------------
<span jwcid="$content$">
<span jwcid="@Border">
<h1>Page 3</h1>
</span>
</span>
//end of source code
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