ZK Developer's Guide

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First we need the zkLoader servlet, which loads the ZUML pages when the web container receives a request for a page. This servlet is named org.zkoss.zk.ui.http.DHtmlLayoutServlet. Since this is the first entry for the ZK framework it is really necessary to load this first. Use the parameter: 1 The servlet has two init parameters: • • Update-uri [ 37 ] Chapter 1 This is a mandatory parameter. It specifies the URI the ZK AU engine is mapped to. The browser needs that URI to send the correct pattern of AJAX URL requests to the DHtmlLayoutServlet. For default, we use /zkau. Log_level This is an optional parameter. It specifies the default log level for the org. zkoss package. Possible values are OFF, ERROR, DEBUG, INFO, and WARNING. This servlet supports static XHTML pages natively. The complete settings are as follows: ZK loader for ZUML pages zkLoader org.zkoss.zk.ui.http.DHtmlLayoutServlet update-uri /zkau 1 The second important and mandatory servlet is org.zkoss.zk.au.http. DHtmlUpdateServlet. It handles AJAX requests asynchronously. The mapped URL pattern must be the same as for the update-uri parameter in the DHtmlLayoutServlet. The last mandatory servlet is the ZK Session Cleaner. It is a listener and it cleans up the memory when a session is closed. The class is org.zkoss.zk.ui.http. HttpSessionListener.
Getting Started with ZK The question is now what to do if any other technique like JSP or JSF should be integrated as well. ZK has a filter servlet, which post-process the output from other servlets processors. The servlet class is org.zkoss.zk.ui.http.DHtmlLayoutFilter and has two optional parameters: • • Extension This describes how to process the output. The default is html. Charset This specifies the charset of the output. The default is UTF-8. A sample part of web.xml looks as follows: Used to cleanup when a session is destroyed ZK Session Cleaner org.zkoss.zk.ui.http.HttpSessionListener ZK loader for ZUML pages zkLoader org.zkoss.zk.ui.http.DHtmlLayoutServlet update-uri /zkau 1 zkLoader *.zul zkLoader *.zhtml The asynchronous update engine for ZK [ 38 ]
Page 2 and 3: ZK Developer's Guide Developing res
Page 4 and 5: Authors Markus Stäuble Hans-Jürge
Page 6: About the Reviewers Razvan Remus Po
Page 9 and 10: Table of Contents Deployment 39 Dep
Page 12 and 13: Preface ZK is an open-source web de
Page 14 and 15: There are three styles for code. Co
Page 16 and 17: Getting Started with ZK The world o
Page 18 and 19: [ 7 ] Chapter 1 XHTML XHTML is the
Page 20 and 21: [ 9 ] Chapter 1 First Step: Say Hel
Page 22 and 23: alert('Hello '+username.value); ]]>
Page 24 and 25: [ 13 ] Chapter 1 One part of the pr
Page 26 and 27: 120 index.zul index.zhtml inde
Page 28 and 29: Component Framework representation:
Page 30 and 31: The class org.zkoss.zk.ui.Path offe
Page 32 and 33: Now we will implement doInit() and
Page 34 and 35: It's worth mentioning that requests
Page 36 and 37: [ 25 ] Chapter 1 What is the Priori
Page 38 and 39: } } } [ 27 ] Chapter 1 /** * Implem
Page 40 and 41: [ 29 ] Chapter 1 It depends on the
Page 42 and 43: To use the default mold nothing spe
Page 44 and 45: Another area of application is the
Page 46 and 47: The following scre
Page 50 and 51: auEngine org.zkoss.zk.au.http.DHtm
Page 52: org.zkoss.zkforge fckez 2.3-2 or
Page 55 and 56: Online Media Library In the first i
Page 57 and 58: Online Media Library For that open
Page 59 and 60: Online Media Library 5. Press Next.
Page 61 and 62: Online Media Library The directory
Page 63 and 64: Online Media Library We need four n
Page 65 and 66: Online Media Library How to use the
Page 67 and 68: Online Media Library How to impleme
Page 69 and 70: Online Media Library After the uplo
Page 71 and 72: Online Media Library MediaType[] ty
Page 73 and 74: Online Media Library A Song. A M
Page 75 and 76: Online Media Library Remove the
Page 77 and 78: Online Media Library
Page 80 and 81: Extending the Online Media Library
Page 82 and 83: public class MediaListItemRenderer
Page 84 and 85: } public MyListbox() { } public voi
Page 86 and 87: [ 75 ] Chapter 3 Updating at the Ri
Page 88 and 89: } } button.setParent(parent); retur
Page 90 and 91: [ 79 ] Chapter 3 If some speci
Page 92 and 93: } } } item.setValue(media.getTitle(
Page 94 and 95: searchlistbox.getModel().update();
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The implementation of the modal dia
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Settings settingsStorage = Setting
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[ 91 ] Chapter 3 Summary Our second
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Is it on the Desktop or on the Web?
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Integration with Other Frameworks Z
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IRT-FLIGHTSAMPLE hibernateFilter o
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auEngine org.zkoss.zk.au.http.DHtm
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} [ 131 ] Chapter 5 flightdate = (D
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org.zkoss.zkplus.hibernate. Hiberna
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[ 135 ] Chapter 5 Instead of using
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[ 137 ] Chapter 5 Binding to a Back
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Creating Custom Components After th
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The changed mask is shown as follow
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[ 143 ] Chapter 6 Now we start crea
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onOK="login()"> String labelUser
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default my-window.dsp In the lan
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[ 149 ] Chapter 6 ${z:redraw(ch
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org.zkoss.zk.ui.http.DHtmlLayoutSer
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jpeg image/jpeg jpg image/jpeg
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Development Tools for the ZK Framew
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[ 157 ] Chapter 7 Databinding Zk-be
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[ 159 ] Chapter 7 Snapshot Gallery
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Configuration Files in ZK Tag Defau
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Configuration Files in ZK org.zkoss
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Configuration Files in ZK 3. This
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C Cascading Style Sheets. See CSS c
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tag 165, 166 tag 167 ZK framework.
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