How to create a plugin with new file templates?

I think this might help me: http://intellij.net/forums/thread.jspa?messageID=5212898&#5212898

And this: http://intellij.net/forums/message.jspa?messageID=5201342

When would I need to implement FileTemplateGroupDescriptorFactory?

Right now I have a class like this:

public class FileModuleComponent implements ModuleComponent {

Module module;

public FileModuleComponent(Module module) {
this.module = module;
}

public void createFileFromTemplate() throws Exception {
ModuleRootManager rootModel = ModuleRootManager.getInstance(module);
JOptionPane.showMessageDialog(null,rootModel.getModule().getName());
final Module module = rootModel.getModule();
final Project project = module.getProject();
Properties properties = FileTemplateManager.getInstance().getDefaultProperties();
final PsiDirectory directory = PsiManager.getInstance(project).findDirectory(rootModel.getSourceRoots()[0]);
FileTemplate template = FileTemplateManager.getInstance().getJ2eeTemplate("test.java");
FileTemplateUtil.createFromTemplate(template, "test.java", properties, directory);
}

...
...
...


And I am calling this from an AnAction class:

public void actionPerformed(AnActionEvent e) {
Application application = ApplicationManager.getApplication();
FileModuleComponent appModuleComponent = application.getComponent(FileModuleComponent.class);
try {
appModuleComponent.createFileFromTemplate();
} catch (Exception e1) {
e1.printStackTrace();
}
}


But I am sure all of this is the wrong approach. Also because it doesn't work. Please help.

-- Registering file template code under
Templates tab in File Templates Settings -
private static void addFileTemplate(final @NonNls String name,@NonNls
String ext) {
FileTemplate template = FileTemplateManager.getInstance().getTemplate(name);
if (template == null) {
try {
template =
FileTemplateManager.getInstance().addTemplate(name, ext);
template.setText(FileUtil.loadTextAndClose(
new
InputStreamReader(JSSupportLoader.class.getResourceAsStream("/fileTemplates/"
+ name + "." + ext + ".ft")))
);
} catch (IOException ex) { ... }
}
}

e.g. addFileTemplate("ActionScript Class", "as");
-

creating file (@see
com.intellij.ide.actions.CreateElementActionBase) -

final FileTemplate template =
FileTemplateManager.getInstance().getInternalTemplate(myTemplateName);

PsiElement element;
try {
element = FileTemplateUtil
.createFromTemplate(template, getName(newName),
FileTemplateManager.getInstance().getDefaultProperties(), directory);
final PsiFile psiFile = element.getContainingFile();

final VirtualFile virtualFile = psiFile.getVirtualFile();
if (virtualFile != null) {

FileEditorManager.getInstance(directory.getProject()).openFile(virtualFile,
true);
return new PsiElement[]{psiFile};
}
}
catch (IncorrectOperationException e) {
throw e;
}
catch (Exception e) {
LOG.error(e);
}

Geertjan wrote:

Right now I have a class like this:

public class FileModuleComponent implements ModuleComponent {

Module module;

public FileModuleComponent(Module module) {
this.module = module;
}

public void createFileFromTemplate() throws Exception {
ModuleRootManager rootModel = ModuleRootManager.getInstance(module);
JOptionPane.showMessageDialog(null,rootModel.getModule().getName());
final Module module = rootModel.getModule();
final Project project = module.getProject();
Properties properties = FileTemplateManager.getInstance().getDefaultProperties();
final PsiDirectory directory = PsiManager.getInstance(project).findDirectory(rootModel.getSourceRoots()[0]);
FileTemplate template = FileTemplateManager.getInstance().getJ2eeTemplate("test.java");
FileTemplateUtil.createFromTemplate(template, "test.java", properties, directory);
}

...
...
...


And I am calling this from an AnAction class:

public void actionPerformed(AnActionEvent e) {
Application application = ApplicationManager.getApplication();
FileModuleComponent appModuleComponent = application.getComponent(FileModuleComponent.class);
try {
appModuleComponent.createFileFromTemplate();
} catch (Exception e1) {
e1.printStackTrace();
}
}


But I am sure all of this is the wrong approach. Also because it doesn't work. Please help.

--
Best regards,
Maxim Mossienko
IntelliJ Labs / JetBrains Inc.
http://www.intellij.com
"Develop with pleasure!"

I'm sorry. This is not enough information. Do I need to register something in the plugin.xml file, under group-id="NewGroup"? Or not? I'd like step by step instructions, please.

Hi Geertjan,

The file template system does not allow to create multiple files from a single template, or to modify the code in existing files, in a declarative way. Maxim showed you samples of code for registering individual templates, and any additional functionality needs to be coordinated from your code. You can use the PSI API to modify Java code in existing classes, and the file template API (FileTemplateUtil.createFromTemplate()) to create individual files from file templates.

If you want provide an action to generate some code then you'd need to
insert appropriate declaration in plugin.xml (New Action does that
automatically), 'creating code' snippet should go to action class
implementation, besides you need application component that will
register templates (and it also should be registered in plugin.xml and
can be created by 'New Application component' action), code registereing
snippet will go in that place.

Geertjan wrote:

I'm sorry. This is not enough information. Do I need to register something in the plugin.xml file, under group-id="NewGroup"? Or not? I'd like step by step instructions, please.

--
Best regards,
Maxim Mossienko
IntelliJ Labs / JetBrains Inc.
http://www.intellij.com
"Develop with pleasure!"