public CodeGenWizard() 
{
//TODO change this
        super();
        setNeedsProgressMonitor(true);
        this
                .setWindowTitle(org.apache.axis2.tool.codegen.eclipse.plugin.CodegenWizardPlugin
                        .getResourceString("general.name"));
}

Constructor for CodeGenWizard.

 public  void addPages() 
{
        toolSelectionPage = new ToolSelectionPage();
        addPage(toolSelectionPage);
        //add the wsdl2java wizard pages
        wsdlSelectionPage = new WSDLFileSelectionPage();
        addPage(wsdlSelectionPage);
        optionsPage = new OptionsPage();
        addPage(optionsPage);
        outputPage = new OutputPage();
        addPage(outputPage);
        //add java2wsdl wizard pages
        javaSourceSelectionPage = new JavaSourceSelectionPage();
        addPage(javaSourceSelectionPage);
        java2wsdlOptionsPage = new JavaWSDLOptionsPage();
        addPage(java2wsdlOptionsPage);
        java2wsdlOutputLocationPage = new JavaWSDLOutputLocationPage();
        addPage(java2wsdlOutputLocationPage);
}

Adding the page to the wizard.

 public boolean canFinish() 
{
        IWizardPage[] pages = getPages();
        AbstractWizardPage wizardPage = null;
        for (int i = 0; i <  pages.length; i++) {
            wizardPage = (AbstractWizardPage) pages[i];
            if (wizardPage.getPageType() == this.selectedWizardType) {
                if (!(wizardPage.isPageComplete()))
                    return false;
            }
        }
        return true;
}

 public  void copyDirectory(File srcDir,
    File dstDir) throws IOException 
{
        if (srcDir.isDirectory()) {
            if (!dstDir.exists()) {
                dstDir.mkdir();
            }
            String[] children = srcDir.list();
            for (int i=0; i< children.length; i++) {
                copyDirectory(new File(srcDir, children[i]),
                                     new File(dstDir, children[i]));
            }
        } else {
            copyFile(srcDir, dstDir);
        }
}

 public IWizardPage getNextPage(IWizardPage page) 
{
        AbstractWizardPage currentPage = (AbstractWizardPage) page;
        AbstractWizardPage pageout = (AbstractWizardPage) super
                .getNextPage(page);
        while (pageout != null && selectedWizardType != pageout.getPageType()) {
            AbstractWizardPage temp = pageout;
            pageout = (AbstractWizardPage) super.getNextPage(currentPage);
            currentPage = temp;
        }
        return pageout;
}

 public int getSelectedCodegenOptionType() 
{
        return selectedCodegenOptionType;
}

 public int getSelectedWizardType() 
{
        return selectedWizardType;
}

 public String getWSDLname() 
{
        return wsdlSelectionPage.getFileName();
}

Get the selected WSDL from the WSDLselectionpage

 public  void init(IWorkbench workbench,
    IStructuredSelection selection) 
{
        //do nothing
}

We will accept the selection in the workbench to see if we can initialize from it.

 public boolean performFinish() 
{
        try {
            switch (selectedWizardType) {
            case SettingsConstants.WSDL_2_JAVA_TYPE:
                doFinishWSDL2Java();
                break;
            case SettingsConstants.JAVA_2_WSDL_TYPE:
                doFinishJava2WSDL();
                break;
            case SettingsConstants.UNSPECIFIED_TYPE:
                break; //Do nothing
            default:
                throw new RuntimeException(CodegenWizardPlugin.
                		getResourceString("general.invalid.state"));
            }
        } catch (Exception e) {
            MessageDialog.openError(getShell(), 
                    CodegenWizardPlugin.getResourceString("general.Error"), 
                    CodegenWizardPlugin.getResourceString("general.Error.prefix") +
                    e.getMessage());
            return false;
        }
        MessageDialog.openInformation(this.getShell(), 
                 CodegenWizardPlugin
                .getResourceString("general.name"), CodegenWizardPlugin
                .getResourceString("wizard.success"));
        return true;
}

This method is called when 'Finish' button is pressed in the wizard. We will create an operation and run it using wizard as execution context.

 public  void populateOptions() 
{
    	optionsPage.populateParamsFromWSDL();
}

populate the options page. Usually done after reloading the WSDL

 public  void setDefaultNamespaces(String fullyQualifiedClassName) 
{
    	java2wsdlOptionsPage.setNamespaceDefaults(fullyQualifiedClassName);
}

 public  void setSelectedCodegenOptionType(int selectedCodegenOptionType) 
{
        this.selectedCodegenOptionType = selectedCodegenOptionType;
}

 public  void setSelectedWizardType(int selectedWizardType) 
{
        this.selectedWizardType = selectedWizardType;
}