pAPropertyTester.java

package com.proalpha.pds.ui;
 
import org.eclipse.core.expressions.PropertyTester;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.text.TextSelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TreeSelection;
 
import com.proalpha.pds.paconnector.Activator;
import com.proalpha.pds.paconnector.PaProject;
 
public class pAPropertyTester extends PropertyTester {
 
    @Override
    public boolean test(Object receiver, String property, Object[] args, Object expectedValue) {
        IFile file = null;
        PaProject paProject = null;
 
        if (receiver instanceof TextSelection || receiver instanceof TreeSelection) {
            paProject = Activator.getDefault().getProjectManager().getPaProjectByTextSelection();
        }
 
        if (paProject == null)
            return false;
 
        if (!paProject.isAvailable())
            return false;
 
        file = Activator.getDefault().getProjectManager().getFileFromActiveSelection();
 
        if (file == null) 
            return false;
 
        if ("canCreateUserExit".equalsIgnoreCase(property)) {
 
 
            if (paProject.getCustomLevel().isEmpty()
                    || !UserExitTools.userexitpossible(file))
                return false;
 
            // If file doesn't exist then allow creation
            return !UserExitTools.userExitFileExists(file, paProject.getCustomLevel());
        }
 
        else if ("canUpdateUserExit".equalsIgnoreCase(property)) {
 
 
            // Check the file extension allow to create a USER EXIT
            if (paProject.getCustomLevel().isEmpty()
                    || !UserExitTools.userexitpossible(file))
                return false;
 
            // Update a user-exit for a class makes no sense because there arent't any
            // user-exit entries which need to get updated
            if (file.getFileExtension().equals("cls"))
                return false;
 
            // If file exists allow update
            return UserExitTools.userExitFileExists(file, paProject.getCustomLevel());
        }
 
        return false;
    }
 
}