@Override
  public Control createContents(Composite parent) {
    setShell(parent.getShell());

    Label header = new Label(parent, SWT.NONE);
    header.setText(getHeaderLabel());
    Composite markersComposite = createInnerContent(parent);
    validateSettings(null, null, null);

    return markersComposite;
  }
  protected Composite createInnerContent(Composite folder) {

    Composite result = new Composite(folder, SWT.NONE);

    GridLayout layout = new GridLayout();
    layout.marginWidth = 0;
    result.setLayout(layout);

    GridData gd = new GridData(GridData.FILL_HORIZONTAL);
    gd.widthHint = 440;
    result.setLayoutData(gd);

    // php
    gd = new GridData(GridData.FILL_HORIZONTAL);
    Group sourceFolderGroup = new Group(result, SWT.NONE);
    sourceFolderGroup.setLayout(new GridLayout(3, false));
    sourceFolderGroup.setLayoutData(gd);
    sourceFolderGroup.setText("PHP executable");

    GridData gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
    gridData.horizontalSpan = 3;
    Link prefLink = new Link(sourceFolderGroup, SWT.WRAP);
    prefLink.setText("You can add PHP binaries in the <a>PHP Executables</a> preference page.");
    prefLink.setLayoutData(gridData);

    prefLink.addSelectionListener(
        new SelectionAdapter() {
          public void widgetSelected(SelectionEvent e) {
            IWorkbenchPreferenceContainer container =
                (IWorkbenchPreferenceContainer) getPreferenceContainer();
            container.openPage(PHPsPreferencePage.ID, null);
          };
        });

    Link helpLink = new Link(sourceFolderGroup, SWT.WRAP);
    helpLink.setLayoutData(gridData);
    helpLink.setText("See <a>phptherightway.com</a> if you need help installing the PHP CLI.");
    helpLink.addSelectionListener(
        new SelectionAdapter() {
          public void widgetSelected(SelectionEvent e) {
            try {
              PlatformUI.getWorkbench()
                  .getBrowserSupport()
                  .getExternalBrowser()
                  .openURL(new URL("http://www.phptherightway.com/#getting_started"));
            } catch (Exception e1) {
              Logger.logException(e1);
            }
          };
        });

    exes = new ComboDialogField(SWT.READ_ONLY);
    exes.setLabelText("PHP executable");
    exes.doFillIntoGrid(sourceFolderGroup, 2);
    exes.setDialogFieldListener(this);

    createTestButton(sourceFolderGroup);

    loadExecutables();

    createScriptGroup(result);
    loadPhar();

    if (phpExes.getAllItems().length == 0) {
      testButton.setEnabled(false);
    }

    createExtraContent(result);

    return result;
  }