/*
Code revised from
Cooking with Java XP
by Eric M. Burke and Brian M. Coyner
ISBN: 0-596-00387-0
Pages: 288
*/
<?xml version="1.0"?>
<project name="Ant Task" default="compile" basedir=".">
<property name="dir.build" value="build"/>
<property name="dir.dist" value="dist"/>
<property name="dir.src" value="src"/>
<path id="classpath.project">
<pathelement path="${dir.build}"/>
</path>
<target name="compile" description="Compile all source code.">
<javac srcdir="${dir.src}" destdir="${dir.build}">
<classpath refid="classpath.project"/>
</javac>
</target>
<target name="demoDialogBox" depends="compile">
<taskdef name="dialogbox"
classname="DialogBoxTask"
classpath="${dir.build}"/>
<dialogbox message="Are you ready?"
title="Important Question"
property="response"
optiontype="yes_no"/>
<dialogbox message="You entered ${response}!"/>
<dialogbox title="First response: ${response}">This is a dialog with a multi-line message.</dialogbox>
</target>
</project>
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import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.ProjectHelper;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.types.EnumeratedAttribute;
import javax.swing.*;
public class DialogBoxTask extends Task {
private String message;
private String title = "Question";
private int optionType = -1;
private String propertyName;
public void setTitle(String title) {
this.title = title;
}
public void setProperty(String propertyName) {
this.propertyName = propertyName;
}
public void setOptiontype(OptionType ot) {
log("Calling setOptionType: " + ot.getValue(),
Project.MSG_DEBUG);
String value = ot.getValue();
if ("ok".equals(value)) {
optionType = -1;
} else if ("ok_cancel".equals(value)) {
optionType = JOptionPane.OK_CANCEL_OPTION;
} else if ("yes_no".equals(value)) {
optionType = JOptionPane.YES_NO_OPTION;
} else {
// only remaining possibility
optionType = JOptionPane.YES_NO_CANCEL_OPTION;
}
}
public void setMessage(String msg) {
// ant always replaces properties for attributes
message = msg;
}
public void addText(String msg) {
if (message == null) {
message = "";
}
// we must manually replace properties for nested text
message += ProjectHelper.replaceProperties(
getProject(), msg, getProject().getProperties());
}
public void execute() throws BuildException {
validateAttributes();
log("optionType = " + optionType, Project.MSG_DEBUG);
if (optionType == -1) {
JOptionPane.showMessageDialog(
null, // parent
message,
title,
JOptionPane.INFORMATION_MESSAGE);
} else {
int response = JOptionPane.showConfirmDialog(
null, // parent
message,
title,
optionType,
JOptionPane.QUESTION_MESSAGE);
if (propertyName != null) {
String responseText = formatResponseCode(response);
log("Setting " + propertyName + " to " + responseText,
Project.MSG_VERBOSE);
getProject().setProperty(propertyName, responseText);
}
}
}
protected void validateAttributes() {
if (message == null) {
throw new BuildException("Message must be specified using the "
+ "message attribute or nested text.");
}
if (optionType == -1 && propertyName != null) {
throw new BuildException(
"Cannot specify property unless optionType is "
+ "'ok_cancel', 'yes_no', or 'yes_no_cancel'");
}
}
public static class OptionType extends EnumeratedAttribute {
public String[] getValues() {
return new String[]{
"ok",
"ok_cancel",
"yes_no",
"yes_no_cancel",
};
}
}
private String formatResponseCode(int optionPaneResponse) {
switch (optionPaneResponse) {
// note: JOptionPane.OK_OPTION is the same as YES_OPTION
case JOptionPane.YES_OPTION:
return "yes";
case JOptionPane.NO_OPTION:
return "no";
case JOptionPane.CANCEL_OPTION:
case JOptionPane.CLOSED_OPTION:
return "cancel";
default:
throw new BuildException("Internal error: Unknown option " +
"pane response: " + optionPaneResponse);
}
}
}
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AntYourOwnTask.zip( 4 k)