Source Viewer : WEB-INF/classes/org/apache/click/examples/page/wizard/WizardPage.java
package org.apache.click.examples.page.wizard;
import java.util.List;
import org.apache.click.element.CssImport;
import org.apache.click.examples.page.BorderPage;
import org.apache.click.util.HtmlStringBuffer;
/**
* This Page manages steps in a wizard process.
*/
public class WizardPage extends BorderPage {
private static final long serialVersionUID = 1L;
/** Current step in the process. */
private Step currentStep;
public static final String STEP1_DESC = "Client";
public static final String STEP2_DESC = "Address";
public static final String STEP3_DESC = "Confirmation";
public static final String STEP1_LABEL = "Step 1";
public static final String STEP2_LABEL = "Step 2";
public static final String STEP3_LABEL = "Step 3";
public String[] stepDescriptions = {STEP1_DESC, STEP2_DESC, STEP3_DESC};
public String[] stepLabels = {STEP1_LABEL, STEP2_LABEL, STEP3_LABEL};
private int numberOfSteps = stepDescriptions.length;
private int currentStepIndex = 0;
// Constructor ------------------------------------------------------------
/**
* Default constructor.
*/
public WizardPage() {
// Lookup step ID; defaults to "0"
int stepId = WizardUils.restoreActiveStepIndex();
setCurrentStepIndex(stepId);
//setCurrentStep(steps.get(stepIndex));
// Initialize all the steps
/*
Iterator it = steps.iterator();
while(it.hasNext()) {
Step step = (Step) it.next();
step.init();
}
*
*/
}
// Public Methods ---------------------------------------------------------
/**
* Return the current step.
*
* @return the current step
*/
public Step getCurrentStep() {
return currentStep;
}
/**
* Sets the current Step to the specified Step.
*
* @param stepIndex the current step index to set
*/
public void setCurrentStepIndex(int stepIndex) {
// Store step index for subsequent requests
WizardUils.saveActiveStepIndex(stepIndex);
currentStepIndex = stepIndex;
if (currentStep != null) {
removeControl(currentStep);
}
getModel().remove("heading");
if (stepIndex == 0) {
currentStep = new Step1("step", STEP1_LABEL, STEP1_DESC, this);
} else if (stepIndex == 1) {
currentStep = new Step2("step", STEP2_LABEL, STEP2_DESC, this);
} else if (stepIndex == 2) {
currentStep = new Step3("step", STEP3_LABEL, STEP3_DESC, this);
}
currentStep.init();
// Add the new step to the page list of controls
addControl(currentStep);
addModel("heading", getHeading());
}
/**
* Return true if there is another step before the specified step.
*
* @return true if there is another step before the specified step
*/
public boolean hasPreviousStep() {
return currentStepIndex > 0;
}
/**
* Return true if there is another step after the specified step.
*
* @return true if there is another step after the specified step
*/
public boolean hasNextStep() {
return !isLastStep();
}
/**
* Return true if the specified step is the last step in the process.
*
* @return true if the specified step is the last step in the process
*/
public boolean isLastStep() {
// currentStepIndex is a zero based index. Add 1 when comparing to
// numberOfSteps
return (numberOfSteps == currentStepIndex + 1);
}
/**
* Goto previous step.
*/
public void previous() {
if (currentStepIndex > 0) {
setCurrentStepIndex(--currentStepIndex);
}
}
/**
* Goto next step.
*/
public void next() {
if (currentStepIndex < numberOfSteps - 1) {
setCurrentStepIndex(++currentStepIndex);
}
}
/**
* Return the page stylesheet: wizard.css.
*
* @return the page stylesheet
*/
@Override
public List getHeadElements() {
if (headElements == null) {
headElements = super.getHeadElements();
headElements.add(new CssImport("/wizard/wizard.css"));
}
return headElements;
}
// Private Methods --------------------------------------------------------
/**
* Return an HTML representation of the wizard steps as an Html List <ul>.
* The current step is assigned a special CSS class so it can be highlighted
* through CSS.
*/
private String getHeading() {
HtmlStringBuffer buffer = new HtmlStringBuffer();
buffer.append("<ul id=\"steps\">");
for (int i = 0; i < stepDescriptions.length; i++) {
String stepDescription = stepDescriptions[i];
String stepLabel = stepLabels[i];
buffer.elementStart("li");
if (stepDescription.equals(currentStep.getDescription())) {
buffer.appendAttribute("class", "current");
}
buffer.closeTag();
buffer.append(stepDescription);
buffer.elementStart("span");
buffer.closeTag();
buffer.append(stepLabel);
buffer.elementEnd("span");
buffer.elementEnd("li");
}
buffer.append("</ul>");
return buffer.toString();
}
}