/*******************************************************************************
 * Copyright (c) 2000, 2004 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package net.sourceforge.phpeclipse.wiki.preferences;

import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Image;
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.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

/**
 * A dialog for prompting for a category and fPassword
 */
public class UserValidationDialog extends Dialog {
  // widgets
  protected Text usernameField;

  protected Text passwordField;

  protected Button allowCachingButton;

  protected String domain;

  protected String defaultUsername;

  protected String password = null;

  protected boolean allowCaching = false;

  protected Image keyLockImage;

  // whether or not the category can be changed
  protected boolean isUsernameMutable = true;

  protected boolean showAllowCachingButton = true;

  protected String username = null;

  protected String message = null;

  /**
   * Creates a new CategoryDialog.
   * 
   * @param parentShell
   *          the parent shell
   * @param location
   *          the location
   * @param defaultName
   *          the default fUser name
   * @param message
   *          a mesage to display to the fUser
   */
  public UserValidationDialog(Shell parentShell, String location, String defaultName, String message) {
    super(parentShell);
    this.defaultUsername = defaultName;
    this.domain = location;
    this.message = message;
  }

  /**
   * @see Window#configureShell
   */
  protected void configureShell(Shell newShell) {
    super.configureShell(newShell);
    newShell.setText(Messages.getString("CategoryDialog.required")); //$NON-NLS-1$
    // set F1 help
    //		WorkbenchHelp.setHelp(newShell, IHelpContextIds.USER_VALIDATION_DIALOG);
  }

  /**
   * @see Window#create
   */
  public void create() {
    super.create();
    // add some default values
    usernameField.setText(defaultUsername);

    if (isUsernameMutable) {
      // give focus to category field
      usernameField.selectAll();
      usernameField.setFocus();
    } else {
      usernameField.setEditable(false);
      passwordField.setFocus();
    }
  }

  /**
   * @see Dialog#createDialogArea
   */
  protected Control createDialogArea(Composite parent) {
    Composite top = new Composite(parent, SWT.NONE);
    GridLayout layout = new GridLayout();
    layout.numColumns = 2;

    top.setLayout(layout);
    top.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

    Composite imageComposite = new Composite(top, SWT.NONE);
    layout = new GridLayout();
    imageComposite.setLayout(layout);
    imageComposite.setLayoutData(new GridData(GridData.FILL_VERTICAL));

    Composite main = new Composite(top, SWT.NONE);
    layout = new GridLayout();
    layout.numColumns = 3;
    main.setLayout(layout);
    main.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

    Label imageLabel = new Label(imageComposite, SWT.NONE);
    keyLockImage = TeamImages.getImageDescriptor(ITeamUIImages.IMG_KEY_LOCK).createImage();
    imageLabel.setImage(keyLockImage);
    GridData data = new GridData(GridData.FILL_HORIZONTAL | GridData.GRAB_HORIZONTAL);
    imageLabel.setLayoutData(data);

    if (message != null) {
      Label messageLabel = new Label(main, SWT.WRAP);
      messageLabel.setText(message);
      data = new GridData(GridData.FILL_HORIZONTAL | GridData.GRAB_HORIZONTAL);
      data.horizontalSpan = 3;
      data.widthHint = 300;
      messageLabel.setLayoutData(data);
    }
    if (domain != null) {
      Label d = new Label(main, SWT.WRAP);
      d.setText(Messages.getString("CategoryDialog.5")); //$NON-NLS-1$
      data = new GridData();
      d.setLayoutData(data);
      Label label = new Label(main, SWT.WRAP);
      if (isUsernameMutable) {
        label.setText(Messages.bind("CategoryDialog.labelUser", domain)); //$NON-NLS-1$
      } else {
        label.setText(Messages.bind("CategoryDialog.labelPassword", new Object[] { defaultUsername, domain })); //$NON-NLS-1$
      }
      data = new GridData(GridData.FILL_HORIZONTAL | GridData.GRAB_HORIZONTAL);
      data.horizontalSpan = 2;
      data.widthHint = 300;
      label.setLayoutData(data);
    }
    createUsernameFields(main);
    createPasswordFields(main);

    if (domain != null && showAllowCachingButton) {
      allowCachingButton = new Button(main, SWT.CHECK);
      allowCachingButton.setText(Messages.getString("CategoryDialog.6")); //$NON-NLS-1$
      data = new GridData(GridData.FILL_HORIZONTAL | GridData.GRAB_HORIZONTAL);
      data.horizontalSpan = 3;
      allowCachingButton.setLayoutData(data);
      allowCachingButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent e) {
          allowCaching = allowCachingButton.getSelection();
        }
      });
      Composite warningComposite = new Composite(main, SWT.NONE);
      layout = new GridLayout();
      layout.numColumns = 2;
      layout.marginHeight = 0;
      layout.marginHeight = 0;
      warningComposite.setLayout(layout);
      data = new GridData(GridData.FILL_HORIZONTAL);
      data.horizontalSpan = 3;
      warningComposite.setLayoutData(data);
      Label warningLabel = new Label(warningComposite, SWT.NONE);
      warningLabel.setImage(getImage(DLG_IMG_MESSAGE_WARNING));
      warningLabel.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_BEGINNING));
      Label warningText = new Label(warningComposite, SWT.WRAP);
      warningText.setText(Messages.getString("CategoryDialog.7")); //$NON-NLS-1$
      data = new GridData(GridData.FILL_HORIZONTAL);
      data.widthHint = 300;
      warningText.setLayoutData(data);
    }

    Dialog.applyDialogFont(parent);

    return main;
  }

  /**
   * Create a spacer.
   */
  protected void createSpacer(Composite top, int columnSpan, int vertSpan) {
    Label l = new Label(top, SWT.NONE);
    GridData data = new GridData(GridData.FILL_HORIZONTAL | GridData.GRAB_HORIZONTAL);
    data.horizontalSpan = columnSpan;
    data.verticalSpan = vertSpan;
    l.setLayoutData(data);
  }

  /**
   * Creates the three widgets that represent the fPassword entry area.
   * 
   * @param parent
   *          the parent of the widgets
   */
  protected void createPasswordFields(Composite parent) {
    new Label(parent, SWT.NONE).setText(Messages.getString("CategoryDialog.password")); //$NON-NLS-1$

    passwordField = new Text(parent, SWT.BORDER | SWT.PASSWORD);
    GridData data = new GridData(GridData.FILL_HORIZONTAL);
    data.horizontalSpan = 2;
    data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.ENTRY_FIELD_WIDTH);
    passwordField.setLayoutData(data);
  }

  /**
   * Creates the three widgets that represent the fUser name entry area.
   * 
   * @param parent
   *          the parent of the widgets
   */
  protected void createUsernameFields(Composite parent) {
    new Label(parent, SWT.NONE).setText(Messages.getString("CategoryDialog.user")); //$NON-NLS-1$

    usernameField = new Text(parent, SWT.BORDER);
    GridData data = new GridData(GridData.FILL_HORIZONTAL);
    data.horizontalSpan = 2;
    data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.ENTRY_FIELD_WIDTH);
    usernameField.setLayoutData(data);
  }

  /**
   * Returns the fPassword entered by the fUser, or null if the fUser canceled.
   * 
   * @return the entered fPassword
   */
  public String getPassword() {
    return password;
  }

  /**
   * Returns the category entered by the fUser, or null if the fUser canceled.
   * 
   * @return the entered category
   */
  public String getUsername() {
    return username;
  }

  /**
   * Returns <code>true</code> if the save fPassword checkbox was selected.
   * 
   * @return <code>true</code> if the save fPassword checkbox was selected and <code>false</code> otherwise.
   */
  public boolean getAllowCaching() {
    return allowCaching;
  }

  /**
   * Notifies that the ok button of this dialog has been pressed.
   * <p>
   * The default implementation of this framework method sets this dialog's return code to <code>Window.OK</code> and closes the
   * dialog. Subclasses may override.
   * </p>
   */
  protected void okPressed() {
    password = passwordField.getText();
    username = usernameField.getText();

    super.okPressed();
  }

  /**
   * Sets whether or not the category field should be mutable. This method must be called before create(), otherwise it will be
   * ignored.
   * 
   * @param value
   *          whether the category is mutable
   */
  public void setUsernameMutable(boolean value) {
    isUsernameMutable = value;
  }

  public void setShowAllowCachingButton(boolean value) {
    showAllowCachingButton = value;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.eclipse.jface.dialogs.Dialog#close()
   */
  public boolean close() {
    if (keyLockImage != null) {
      keyLockImage.dispose();
    }
    return super.close();
  }
}