package info.limpet.rcp.wizards;

import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.dialogs.IDialogPage;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.dialogs.ContainerSelectionDialog;

/**
 * The "New" wizard page allows setting the container for the new file as well as the file name. The
 * page will only accept file name without the extension OR with the extension that matches the
 * expected one (lap).
 */

public class NewWizardPage extends WizardPage
{
  private Text containerText;

  private Text fileText;

  private final ISelection selection;

  /**
   * Constructor for SampleNewWizardPage.
   * 
   * @param pageName
   */
  public NewWizardPage(final ISelection selection)
  {
    super("wizardPage");
    setTitle("Limpet Analysis Project");
    setDescription("This wizard creates a new file with *.lap extension that will be opened with the Limpet editor.");
    this.selection = selection;
  }

  /**
   * @see IDialogPage#createControl(Composite)
   */
  @Override
  public void createControl(final Composite parent)
  {
    final Composite container = new Composite(parent, SWT.NULL);
    final GridLayout layout = new GridLayout();
    container.setLayout(layout);
    layout.numColumns = 3;
    layout.verticalSpacing = 9;
    Label label = new Label(container, SWT.NULL);
    label.setText("&Container:");

    containerText = new Text(container, SWT.BORDER | SWT.SINGLE);
    GridData gd = new GridData(GridData.FILL_HORIZONTAL);
    containerText.setLayoutData(gd);
    containerText.addModifyListener(new ModifyListener()
    {
      @Override
      public void modifyText(final ModifyEvent e)
      {
        dialogChanged();
      }
    });

    final Button button = new Button(container, SWT.PUSH);
    button.setText("Browse...");
    button.addSelectionListener(new SelectionAdapter()
    {
      @Override
      public void widgetSelected(final SelectionEvent e)
      {
        handleBrowse();
      }
    });
    label = new Label(container, SWT.NULL);
    label.setText("&File name:");

    fileText = new Text(container, SWT.BORDER | SWT.SINGLE);
    gd = new GridData(GridData.FILL_HORIZONTAL);
    fileText.setLayoutData(gd);
    fileText.addModifyListener(new ModifyListener()
    {
      @Override
      public void modifyText(final ModifyEvent e)
      {
        dialogChanged();
      }
    });
    initialize();
    dialogChanged();
    setControl(container);
  }

  /**
   * Ensures that both text fields are set.
   */

  private void dialogChanged()
  {
    final IResource container =
        ResourcesPlugin.getWorkspace().getRoot().findMember(
            new Path(getContainerName()));
    final String fileName = getFileName();

    if (getContainerName().length() == 0)
    {
      updateStatus("Please choose a folder to contain the analysis project");
      return;
    }
    if (container == null
        || (container.getType() & (IResource.PROJECT | IResource.FOLDER)) == 0)
    {
      updateStatus("File container must exist");
      return;
    }
    if (!container.isAccessible())
    {
      updateStatus("Project must be writable");
      return;
    }
    if (fileName.length() == 0)
    {
      updateStatus("File name must be specified");
      return;
    }
    if (fileName.replace('\\', '/').indexOf('/', 1) > 0)
    {
      updateStatus("File name must be valid");
      return;
    }
    final int dotLoc = fileName.lastIndexOf('.');
    if (dotLoc != -1)
    {
      final String ext = fileName.substring(dotLoc + 1);
      if (ext.equalsIgnoreCase("lap") == false)
      {
        updateStatus("File extension must be \"lap\"");
        return;
      }
    }
    updateStatus(null);
  }

  public String getContainerName()
  {
    return containerText.getText();
  }

  public String getFileName()
  {
    return fileText.getText();
  }

  /**
   * Uses the standard container selection dialog to choose the new value for the container field.
   */

  private void handleBrowse()
  {
    final ContainerSelectionDialog dialog =
        new ContainerSelectionDialog(getShell(), ResourcesPlugin.getWorkspace()
            .getRoot(), false, "Select new file container");
    if (dialog.open() == Window.OK)
    {
      final Object[] result = dialog.getResult();
      if (result.length == 1)
      {
        containerText.setText(((Path) result[0]).toString());
      }
    }
  }

  /**
   * Tests if the current workbench selection is a suitable container to use.
   */

  private void initialize()
  {
    if (selection != null && selection.isEmpty() == false
        && selection instanceof IStructuredSelection)
    {
      final IStructuredSelection ssel = (IStructuredSelection) selection;
      if (ssel.size() > 1)
        return;
      final Object obj = ssel.getFirstElement();
      if (obj instanceof IResource)
      {
        IContainer container;
        if (obj instanceof IContainer)
          container = (IContainer) obj;
        else
          container = ((IResource) obj).getParent();
        containerText.setText(container.getFullPath().toString());
      }
    }
    fileText.setText("analysis.lap");
  }

  private void updateStatus(final String message)
  {
    setErrorMessage(message);
    setPageComplete(message == null);
  }
}
@@ -4262,16 +4262,17 @@
     if (
+!
 ext.equa
@@ -4290,25 +4290,16 @@
 e(%22lap%22)
- == false
 )%0A      
@@ -5255,24 +5255,25 @@
  != null && 
+!
 selection.is
@@ -5283,17 +5283,8 @@
 ty()
- == false
 %0A   

tidy boolean comparisons