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package qq.builder;
 
import org.eclipse.core.resources.ICommand;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectDescription;
import org.eclipse.core.resources.IProjectNature;
import org.eclipse.core.runtime.CoreException;
 
public class SampleNature implements IProjectNature {
 
    /**
     * ID of this project nature
     */
    public static final String NATURE_ID = "qq.sampleNature";
 
    private IProject project;
 
    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.core.resources.IProjectNature#configure()
     */
    public void configure() throws CoreException {
        IProjectDescription desc = project.getDescription();
        ICommand[] commands = desc.getBuildSpec();
 
        for (int i = 0; i < commands.length; ++i) {
            if (commands[i].getBuilderName().equals(SampleBuilder.BUILDER_ID)) {
                return;
            }
        }
 
        ICommand[] newCommands = new ICommand[commands.length + 1];
        System.arraycopy(commands, 0, newCommands, 0, commands.length);
        ICommand command = desc.newCommand();
        command.setBuilderName(SampleBuilder.BUILDER_ID);
        newCommands[newCommands.length - 1] = command;
        desc.setBuildSpec(newCommands);
        project.setDescription(desc, null);
    }
 
    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.core.resources.IProjectNature#deconfigure()
     */
    public void deconfigure() throws CoreException {
        IProjectDescription description = getProject().getDescription();
        ICommand[] commands = description.getBuildSpec();
        for (int i = 0; i < commands.length; ++i) {
            if (commands[i].getBuilderName().equals(SampleBuilder.BUILDER_ID)) {
                ICommand[] newCommands = new ICommand[commands.length - 1];
                System.arraycopy(commands, 0, newCommands, 0, i);
                System.arraycopy(commands, i + 1, newCommands, i,
                        commands.length - i - 1);
                description.setBuildSpec(newCommands);
                project.setDescription(description, null);            
                return;
            }
        }
    }
 
    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.core.resources.IProjectNature#getProject()
     */
    public IProject getProject() {
        return project;
    }
 
    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.core.resources.IProjectNature#setProject(org.eclipse.core.resources.IProject)
     */
    public void setProject(IProject project) {
        this.project = project;
    }
 
}