Hello Shawn,
Thank you for your reply. I've tried your suggestion but it doesn't work.
Inside the method 'public void selectedPage(IRequestCycle cycle) '
'PropertyUtils.isWritable(cycle.getPage(), "perSelectedPage") ' always
returns false
and inside the method 'public void pageBeginRender(PageEvent event) {'
' PropertyUtils.isReadable(event.getRequestCycle().getPage(),"perSelectedPage")
)'
always returns false.
I have used java.util.List
PropertyUtils.getReadableProperties(java.lang.Object target)
and
java.util.List PropertyUtils.getWriteableProperties(java.lang.Object target)
both do not return 'perSelectedPage'
Do you have any more ideas?
On 23/01/06, Shawn Church <[EMAIL PROTECTED]> wrote:
> 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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> > For additional commands, e-mail:
> > [EMAIL PROTECTED]
> >
> >
>
>
>
>
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>
>
--
Thanks
Jabbar Azam
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