Date: 2004-04-29T09:25:55
Editor: 131.191.40.91 <>
Wiki: Apache Struts Wiki
Page: StrutsCatalogMultipleImageButtonsWithNoJavaScript
URL: http://wiki.apache.org/struts/StrutsCatalogMultipleImageButtonsWithNoJavaScript
no comment
Change Log:
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@@ -1 +1,327 @@
-Describe StrutsCatalogMultipleImageButtonsWithNoJavaScript here.
+StrutsCatalog: '''I don't know about you ..., but ... I like code. I hate HTML.
Here is a way to take care of that recurrent problem of how to get around the browser
limitations and use multiple image buttons that crops up continually on the lists.'''
+
+This code is the composite of the work of lots of people and they also built on those
before them. References to them is at the bottom, but I wanted to acknowledge this at
the start.
+
+Here's the button I use.
+
+{{{
+public class CrackWillowButton implements Serializable {
+ private String name = null;
+ private Integer x = null;
+ private Integer y = null;
+
+ public CrackWillowButton() {
+ }
+
+ public boolean pressed() {
+ return !(name == null || name.trim().length() <= 0) ||
+ (x != null || y != null);
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public Integer getX() {
+ return x;
+ }
+
+ public Integer getY() {
+ return y;
+ }
+
+ public void setName(String name) {
+ name = name;
+ }
+
+ public void setX(Integer x) {
+ x = x;
+ }
+
+ public void setY(Integer y) {
+ y = y;
+ }
+}
+}}}
+
+Here's the class that classifies the buttons into the operation they represent:
+
+{{{
+public class ButtonOperation implements Serializable {
+ protected CrackWillowButton submit = new CrackWillowButton();
+ protected CrackWillowButton clear = new CrackWillowButton();
+ protected CrackWillowButton cancel = new CrackWillowButton();
+ protected CrackWillowButton reset = new CrackWillowButton();
+
+ public ButtonOperation() {
+ }
+
+ public CrackWillowButton getCancel() {
+ return cancel;
+ }
+
+ public CrackWillowButton getClear() {
+ return clear;
+ }
+
+ public CrackWillowButton getSubmit() {
+ return submit;
+ }
+
+
+ public CrackWillowButton getReset() {
+ return reset;
+ }
+
+ public void setCancel(CrackWillowButton cancel) {
+ this.cancel = cancel;
+ }
+
+ public void setClear(CrackWillowButton clear) {
+ this.clear = clear;
+ }
+
+ public void setSubmit(CrackWillowButton submit) {
+ this.submit = submit;
+ }
+
+ public void setReset(CrackWillowButton reset) {
+ this.reset = reset;
+ }
+}
+}}}
+
+Here's an Action using these buttons for a registration form:
+
+{{{
+public class ButtonAction extends Action {
+
+ public ActionForward execute(ActionMapping mapping,
+ ActionForm form,
+ HttpServletRequest request,
+ HttpServletResponse response)
+ throws Exception {
+ ActionForward forward =
ActionForwardLayout.getInputForward(mapping.getInputForward(), request);
+ ButtonForm pageForm = (ButtonForm) form;
+
+ if (pageForm.getButton().getSubmit().pressed()) {
+ this.executeRegistration(mapping, form, request, response);
+ } else if (pageForm.getButton().getClear().pressed()) {
+ pageForm.reset(mapping, request);
+ } else if (pageForm.getButton().getCancel().pressed()) {
+ forward = mapping.findForward("cancel");
+ }
+
+ return forward;
+ }
+
+ public ActionForward executeRegistration(ActionMapping mapping,
+ ActionForm form,
+ HttpServletRequest request,
+ HttpServletResponse response)
+ throws Exception {
+
+ // example only
+ return null;
+ }
+}
+}}}
+
+Here's the code !ActionForm for this action:
+
+{{{
+public class ButtonForm
+ extends ActionForm {
+ private ButtonOperation button = null;
+ private String firstName = null;
+ private String lastName = null;
+ private String email = null;
+
+ public ButtonForm() {
+ }
+
+ public void reset(ActionMapping mapping, HttpServletRequest request) {
+ button = new ButtonOperation();
+ firstName = null;
+ lastName = null;
+ email = null;
+ }
+
+ public ButtonOperation getButton() {
+ return button;
+ }
+
+ public void setButton(ButtonOperation button) {
+ button = button;
+ }
+
+ public String getFirstName() {
+ return firstName;
+ }
+
+ public String getLastName() {
+ return lastName;
+ }
+
+ public String getEmail() {
+ return email;
+ }
+
+ public void setFirstName(String firstName) {
+ this.firstName = firstName;
+ }
+
+ public void setLastName(String lastName) {
+ this.lastName = lastName;
+ }
+
+ public void setEmail(String email) {
+ this.email = email;
+ }
+}
+}}}
+
+Here is the struts action mapping:
+
+{{{
+<action
+ path="/button"
+ type="com.crackwillow.struts.action.ButtonAction"
+ name="ButtonForm"
+ scope="request"
+ input="/button_test.jsp">
+ <forward
+ name="cancel"
+ path="/button_test.jsp"
+ redirect="true"/>
+</action>
+}}}
+
+Here's the struts form definition:
+
+{{{
+<form-beans>
+ <form-bean
+ name="ButtonForm"
+ type="com.crackwillow.struts.form.ButtonForm" />
+</form-beans>
+}}}
+
+Here's an example usage:
+
+{{{
+<%@ page language='java' %>
+<%@ page contentType='text/html; charset=UTF-8' %>
+<%@ taglib uri='struts-bean' prefix='bean' %>
+<%@ taglib uri='struts-html' prefix='html' %>
+<%@ taglib uri='struts-tiles' prefix='tiles' %>
+
+<html:html>
+ <head>
+ <title>HTML Buttons Example</title>
+ <link
+ rel="STYLESHEET"
+ type="text/css"
+ href="resource.do?file_type=css&file_name=index.css">
+ </head>
+ <body
+ background="resource.do?file_type=gif&file_name=green.gif"
+ text="#ffffff">
+ <h1
+ align="center">
+ HTML Buttons Example
+ </h1>
+ <table
+ border="0"
+ align="center"
+ width="80%"
+ cellpadding="3"
+ cellspacing="0">
+ <tr>
+ <td>
+ <h1>
+ Registration Form
+ </h1>
+ </td>
+ </tr>
+ </table>
+ <html:form
+ name="ButtonForm"
+ type="com.crackwillow.struts.form.ButtonForm" method="get"
+ action='/button.do'>
+ <table
+ border="0"
+ align="center"
+ width="80%"
+ cellpadding="3"
+ cellspacing="0">
+ <tr>
+ <td
+ width="1%"
+ nowrap>
+ First name:
+ </td>
+ <td>
+ <input
+ type="text"
+ name="firstName"
+ value="">
+ </td>
+ </tr>
+ <tr>
+ <td
+ width="1%"
+ nowrap>
+ Last name:
+ </td>
+ <td>
+ <input
+ type="text"
+ name="lastName"
+ value="">
+ </td>
+ </tr>
+ <tr>
+ <td
+ width="1%"
+ nowrap>
+ Email:
+ </td>
+ <td>
+ <input
+ type="text"
+ name="ssn"
+ value="">
+ </td>
+ </tr>
+ <tr>
+ <td
+ width="1%"
+ nowrap>
+
+ </td>
+ <td>
+ <br><br>
+ <html:image
+ property="button.submit"
+ src="resource.do?file_type=gif&file_name=cw_logo.gif"/>
+ <html:image
+ property="button.clear"
+ src="resource.do?file_type=gif&file_name=cw_logo.gif"/>
+ <html:image
+ property="button.cancel"
+ src="resource.do?file_type=gif&file_name=cw_logo.gif"/>
+ <html:image
+ property="button.reset"
+ src="resource.do?file_type=gif&file_name=cw_logo.gif"/>
+ </td>
+ </tr>
+ </table>
+ </html:form>
+ </body>
+</html:html>
+}}}
+
+If you want to see the !ResourceAction in this code, see
StrutsCatalogEschewUrlForProtocol.
+
+-- Michael !McGrady
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