RenameImplementationInputPage.java :  » Workflow-Engines » osbl-1_0 » gui » wizards » Java Open Source

/**
 * 
 */
package gui.wizards;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.jdt.core.JavaConventions;
import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.ltk.ui.refactoring.UserInputWizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

import core.ModelInfo;

/** <p>the input page for the Rename Type refactoring, where users can
 * control the effects of the refactoring; to be shown in the wizard.</p>
 *
 * <p>We let the user enter the new name for the property, and we let her 
 * decide whether other property files in the bundle should be affected, and
 * whether the operation is supposed to span the entire workspace or only 
 * the current project.</p>
 * 
 * @author sh
 */
public class RenameImplementationInputPage extends UserInputWizardPage {
  
  private static final String DS_KEY = RenameImplementationInputPage.class.getName();
  
  private final ModelInfo info;
  
  private Text txtImplementation;
  
  public RenameImplementationInputPage(final ModelInfo info) {
    super(RenameTypeInputPage.class.getName());
      this.info = info;
  }
  
  /**
   * interface methods of UserInputWizardPage
   */
  public void createControl(final Composite parent) {
    Composite composite = createRootComposite(parent);
      setControl(composite);
      
      createLblImplementation(composite);
      createTxtVarName(composite);
      
      validate();
  }
  
  /**
   * UI creation method
   */
  private Composite createRootComposite(final Composite parent) {
      Composite result = new Composite(parent, SWT.NONE);
      GridLayout gridLayout = new GridLayout(2, false);
      gridLayout.marginWidth = 10;
      gridLayout.marginHeight = 10;
      result.setLayout(gridLayout);
      initializeDialogUnits(result);
      Dialog.applyDialogFont(result);
      return result;
  }
  
  /**
   * UI creation method
   */
  private void createLblImplementation(final Composite composite) {
    Label lblNewName = new Label(composite, SWT.NONE);
      lblNewName.setText("Implementation");
  }
  
  /**
   * UI creation method
   */
  private void createTxtVarName(Composite composite) {
      txtImplementation = new Text(composite, SWT.BORDER);
      txtImplementation.setText(info.getOldImplementation());
      txtImplementation.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
      txtImplementation.selectAll();
      txtImplementation.addKeyListener(new KeyAdapter() {
        public void keyReleased(final KeyEvent e) {
          info.setNewImplementation(txtImplementation.getText());
          validate();
        }
      });
  }
  
  /**
   * helper method
   */
  private void validate() {
    String implementationTxt = txtImplementation.getText();
    IStatus status = JavaConventions.validatePackageName(implementationTxt, CompilerOptions.VERSION_1_3,CompilerOptions.VERSION_1_3);
    
    if (status.isOK()) {
      setPageComplete(true);
      setMessage(null);
    }
    else if (status.ERROR == IStatus.ERROR){
      setPageComplete(false);
      setMessage(status.getMessage());
    }
  }
}