Question

I m having Plugin A which extends the Export Wizard via the org.eclipse.ui.exportWizard ExtensionPoint. Plugin B depends on Plugin A, is it possible to add WizardPages defined in Plugin B to Plugin A? I know adding Pages dynamicly is possible withhin the same Plugin with the DynamicWizard and function getNextPage.

Answer 1

One way would be to define an extension point "plugin_a_wizard_page" in Plugin A, with Plugin B extending it. That way, Plugin A can scan for plugins extending the extension point and add all these to the wizard.

You than have to take a look at Buddy-Class-Loading. In short: PluginA has to define a policy of Eclipse-BuddyPolicy: registered and PluginB has to register itself as a buddy to PluginA.

See: Eclipse RCP: ClassNotFoundException or How to make other bundle load my class

Then PluginA can do the following loop:

IExtensionRegistry registry = Platform.getExtensionRegistry();
IConfigurationElement[] wizardContributions = extensionRegistry
            .getConfigurationElementsFor(
                    "my.plugin",
                    "myExtensionPoint");

for (IConfigurationElement wizardContribution  : wizardContributions ) {
    try {
        IMyWizardContributionInterface listenerClass = (IContactsListener) wizardContribution.createExecutableExtension("class");
        // User your class and add it to the wizard
    } catch (final Exception e) {
         e.printStackTrace();
    }
}

Answer 2

Yes, as long as Plugin B is in the required plugins list for Plugin A (in Plugin A s manifest) then you can access classes from it in any extension point you define in Plugin A. The plugin editor will help you with this, as it will give you a warning if you are referring to a class that it can t access in your wizard extension point.

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