Jabbar,
Since persistent properties follow the page containing each component
(rather than the component itself), I believe you are going to have to
have the "perSelectedPage" property bound to each "selectable" page itself.
There may be more elegant ways to accomplish what you are wanting, but
I've included some code below which might help.
Please try this (or something similar):
Border.java:
public abstract class Border extends BaseComponent implements
PageBeginRenderListener
{
public abstract String getSelectedPage();
public abstract void setSelectedPage(String page);
public void selectedPage(IRequestCycle cycle) {
cycle.activate(getSelectedPage());
if( PropertyUtils.isWritable(cycle.getPage(), "perSelectedPage") )
PropertyUtils.write(cycle.getPage(), "perSelectedPage",
getSelectedPage());
}
public PageSelectionModel getPageSelectionModel() {
return new PageSelectionModel();
}
public void pageBeginRender(PageEvent event) {
if( !event.getRequestCycle().isRewinding() )
{
if( PropertyUtils.isReadable(event.getRequestCycle().getPage(),
"perSelectedPage") )
{
String selpage = ( String )
PropertyUtils.read(event.getRequestCycle().getPage(), "perSelectedPage");
if( selpage != null )
setSelectedPage(( String ) selpage);
}
}
}
}
One each for Page1.page, Page2.page, Page3.page, etc.:
<?xml version="1.0"?>
<!DOCTYPE page-specification PUBLIC
"-//Apache Software Foundation//Tapestry Specification 4.0//EN"
"http://jakarta.apache.org/tapestry/dtd/Tapestry_4_0.dtd";>
<page-specification class="com.technolog.page.Page1">
</page-specification>
One each for Page1.java, Page2.java, Page3.java, etc.:
public abstract class Page1 extends BasePage implements SelectablePage
{
}
SelectablePage.java:
import org.apache.tapestry.IPage;
import org.apache.tapestry.annotations.Persist;
public interface SelectablePage extends IPage
{
@Persist("client:app")
public abstract String getPerSelectedPage();
public abstract void setPerSelectedPage(String page);
}
Shawn
Quoting Jabbar <[EMAIL PROTECTED]>:
> 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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