org.zkoss.zkplus.liferay
Class JQueryRenderPatch

java.lang.Object
  org.zkoss.zkplus.liferay.JQueryRenderPatch

All Implemented Interfaces:

PageRenderPatch

Direct Known Subclasses:

JQueryRenderCachedPatch, NonRootContextJQueryRenderPatch

public class JQueryRenderPatch
extends java.lang.Object
implements PageRenderPatch

Used to patch the rendering result of a ZK portlet for Liferay. When using ZK portlets with Liferay under Internet Explorer, we have to delay the processing at the client a bit.

To use it, you have to specify a library property called ""org.zkoss.zk.portlet.PageRenderPatch.class" with this class's name ("org.zkoss.zkplus.liferay.JQueryRenderPatch").

You can further control the behavior of this patch by use of a library property called "org.zkoss.zkplus.liferary.jQueryPatch" (refer to JQUERY_PATCH for details).

Since:

5.0.0

Author:

tomyeh, sam

Field Summary

static java.lang.String

JQUERY_PATCH A library property to indicate how to apply the so-called jQuery patch.

Constructor Summary

JQueryRenderPatch()

Method Summary

java.io.Writer	beforeRender(RequestInfo reqInfo) It returns an instance of StringWriter if getDelay() is non-negative, or null if negative (means no patch).
protected java.lang.String	getBrowserDelay()
int	getDelay() Returns the number of milliseconds to wait before replacing with the correct content.
void	patchRender(RequestInfo reqInfo, Page page, java.io.Writer result, java.io.Writer out) Called after rendering to patch the result.
protected java.lang.String[]	processHtml(java.lang.String html)
void	setDelay(int delay) Sets the number of milliseconds to wait before replacing with the correct content.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

JQUERY_PATCH

public static final java.lang.String JQUERY_PATCH

A library property to indicate how to apply the so-called jQuery patch.

Default: "500" (it means 500 milliseconds)

You can specify a number to indicate how many milliseconds to wait before replacing with the correct content. If negative, the patch is ignored.

See Also:

Constant Field Values

Constructor Detail

JQueryRenderPatch

public JQueryRenderPatch()

Method Detail

getDelay

public int getDelay()

Returns the number of milliseconds to wait before replacing with the correct content.

Default: depends on the value defined in the JQUERY_PATCH library property.

setDelay

public void setDelay(int delay)

Sets the number of milliseconds to wait before replacing with the correct content.

See Also:

JQUERY_PATCH

beforeRender

public java.io.Writer beforeRender(RequestInfo reqInfo)

It returns an instance of StringWriter if getDelay() is non-negative, or null if negative (means no patch).

Specified by:

beforeRender in interface PageRenderPatch

Parameters:

reqInfo - the request information

Returns:

null if no need of patch, or a writer if the patch is required. The writer will be used to hold the rendering result of the portlet. Thus, you can process it later in PageRenderPatch.patchRender(org.zkoss.zk.ui.sys.RequestInfo, org.zkoss.zk.ui.Page, java.io.Writer, java.io.Writer) (so the writer is usually an instance of StringWriter).

patchRender

public void patchRender(RequestInfo reqInfo,
                        Page page,
                        java.io.Writer result,
                        java.io.Writer out)
                 throws java.io.IOException

Description copied from interface: PageRenderPatch

Called after rendering to patch the result. If PageRenderPatch.beforeRender(org.zkoss.zk.ui.sys.RequestInfo) returns null, this method won't be called since nothing to patch.

If PageRenderPatch.beforeRender(org.zkoss.zk.ui.sys.RequestInfo) returns a writer, the writer will become the result argument.

Specified by:

patchRender in interface PageRenderPatch

Parameters:

reqInfo - the request information

result - the result returned by PageRenderPatch.beforeRender(org.zkoss.zk.ui.sys.RequestInfo), and the rendering result of a page will be written to it.

out - the real output sent to the client. It is the writer to write the patched result to.

Throws:

java.io.IOException

getBrowserDelay

protected java.lang.String getBrowserDelay()

processHtml

protected java.lang.String[] processHtml(java.lang.String html)