/**********************************************************************
 * Copyright (c) 2003 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 - Initial API and implementation
 **********************************************************************/
package net.sourceforge.phpeclipse.wiki.ui.internal;

import java.util.ArrayList;

import net.sourceforge.phpeclipse.wiki.editor.WikiEditorPlugin;
import net.sourceforge.phpeclipse.wiki.internal.IConfigurationWorkingCopy;

import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

/**
 *  
 */
public class ConfigurationDialog extends Dialog {
  protected IConfigurationWorkingCopy fConfiguration;

  protected boolean isEdit;

  private Button okButton;

  private Text fUserName;

  private Text fUrl;

  private Text fPassword;

  interface StringModifyListener {
    public void valueChanged(String s);
  }

  interface BooleanModifyListener {
    public void valueChanged(boolean b);
  }

  interface TypeModifyListener {
    public void valueChanged(String fType);
  }

  /**
   * @param parentShell
   */
  public ConfigurationDialog(Shell parentShell, IConfigurationWorkingCopy configuration) {
    super(parentShell);
    this.fConfiguration = configuration;
    isEdit = true;
  }

  public ConfigurationDialog(Shell parentShell) {
    super(parentShell);
    fConfiguration = WikiEditorPlugin.createConfiguration();
    isEdit = false;
  }

  protected void configureShell(Shell shell) {
    super.configureShell(shell);
    if (isEdit)
      shell.setText(WikiEditorPlugin.getResource("%editConfig"));
    else
      shell.setText(WikiEditorPlugin.getResource("%newConfig"));
  }

  protected Label createLabel(Composite comp, String txt) {
    Label label = new Label(comp, SWT.NONE);
    label.setText(txt);
    label.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING | GridData.VERTICAL_ALIGN_BEGINNING));
    return label;
  }

  protected Text createPassword(Composite comp, String txt, final StringModifyListener listener) {
    final Text text = new Text(comp, SWT.BORDER | SWT.PASSWORD);
    if (txt != null)
      text.setText(txt);
    GridData data = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_BEGINNING);
    data.widthHint = 150;
    text.setLayoutData(data);
    if (listener != null)
      text.addModifyListener(new ModifyListener() {
        public void modifyText(ModifyEvent e) {
          listener.valueChanged(text.getText());
        }
      });
    return text;
  }

  protected Text createText(Composite comp, String txt, final StringModifyListener listener) {
    final Text text = new Text(comp, SWT.BORDER);
    if (txt != null)
      text.setText(txt);
    GridData data = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_BEGINNING);
    data.widthHint = 150;
    text.setLayoutData(data);
    if (listener != null)
      text.addModifyListener(new ModifyListener() {
        public void modifyText(ModifyEvent e) {
          listener.valueChanged(text.getText());
        }
      });
    return text;
  }

  protected Combo createTypeCombo(Composite comp, final ArrayList types, String sel, final TypeModifyListener listener) {
    final Combo combo = new Combo(comp, SWT.DROP_DOWN | SWT.READ_ONLY);
    int size = types.size();
    String[] items = new String[size];
    int index = -1;
    for (int i = 0; i < size; i++) {
      items[i] = (String)types.get(i);
      if (items[i].equals(sel))
        index = i;
    }
    combo.setItems(items);
    if (index >= 0)
      combo.select(index);
    GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_BEGINNING);
    data.widthHint = 150;
    combo.setLayoutData(data);
    if (listener != null)
      combo.addSelectionListener(new SelectionListener() {
        public void widgetSelected(SelectionEvent e) {
          listener.valueChanged((String)types.get(combo.getSelectionIndex()));
        }

        public void widgetDefaultSelected(SelectionEvent e) {
          widgetSelected(e);
        }
      });
    return combo;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
   */
  protected Control createDialogArea(Composite parent) {
    Composite composite = (Composite) super.createDialogArea(parent);
    ((GridLayout) composite.getLayout()).numColumns = 2;

    //		WorkbenchHelp.setHelp(composite, ContextIds.PREF_DIALOG);

    createLabel(composite, WikiEditorPlugin.getResource("%name"));
    fUserName = createText(composite, fConfiguration.getName() + "", new StringModifyListener() {
      public void valueChanged(String name) {
        fConfiguration.setName(name);
        validateFields();
      }
    });

    Group group = new Group(composite, SWT.NONE);
    GridLayout layout = new GridLayout(2, false);
    group.setLayout(layout);
    GridData data = new GridData(GridData.FILL_HORIZONTAL);
    data.horizontalSpan = 2;

    group.setLayoutData(data);
    group.setText(WikiEditorPlugin.getResource("%configGroup"));

    createLabel(group, WikiEditorPlugin.getResource("%user"));
    fUserName = createText(group, fConfiguration.getUser() + "", new StringModifyListener() {
      public void valueChanged(String s) {
        fConfiguration.setUser(s);
        validateFields();
      }
    });

    Composite warningComposite = new Composite(group, 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(WikiEditorPlugin.getResource("%scrambledPassword")); //$NON-NLS-1$
    data = new GridData(GridData.FILL_HORIZONTAL);
    data.widthHint = 300;
    warningText.setLayoutData(data);

    createLabel(group, WikiEditorPlugin.getResource("%password"));
    fPassword = createPassword(group, fConfiguration.getPassword() + "", new StringModifyListener() {
      public void valueChanged(String s) {
        fConfiguration.setPassword(s);
        validateFields();
      }
    });

    createLabel(group, WikiEditorPlugin.getResource("%url"));
    fUrl = createText(group, fConfiguration.getURL(), new StringModifyListener() {
      public void valueChanged(String s) {
        fConfiguration.setURL(s);
        validateFields();
      }
    });

    createLabel(group, WikiEditorPlugin.getResource("%parseType"));
    createTypeCombo(group, WikiEditorPlugin.getTypes(), fConfiguration.getType(), new TypeModifyListener() {
      public void valueChanged(String fType) {
        fConfiguration.setType(fType);
      }
    });

    return composite;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.eclipse.jface.dialogs.Dialog#okPressed()
   */
  protected void okPressed() {
    fConfiguration.save();
    super.okPressed();
  }

  protected Control createButtonBar(Composite parent) {
    Control buttonControl = super.createButtonBar(parent);
    validateFields();
    return buttonControl;
  }

  private void setOKButtonEnabled(boolean curIsEnabled) {
    if (okButton == null)
      okButton = getButton(IDialogConstants.OK_ID);

    if (okButton != null)
      okButton.setEnabled(curIsEnabled);
  }

  protected void validateFields() {
    boolean result = true;

    String currHostname = fUrl.getText();
    //		if (!isValidHostname(currHostname))
    //			result = false;

    String currHostnamePort = fPassword.getText();
    //		try {
    //			Integer.parseInt(currHostnamePort);
    //		} catch (Exception any) {
    //			result = false;
    //		}

    String currMonitorPort = fUserName.getText();
    //		try {
    //			Integer.parseInt(currMonitorPort);
    //		} catch (Exception any) {
    //			result = false;
    //		}

    //		if (result && isLocalhost(currHostname)) {
    //			if (currHostnamePort.equals(currMonitorPort))
    //				result = false;
    //		}
    setOKButtonEnabled(result);
  }

  //	protected static boolean isValidHostname(String host) {
  //		if (host == null || host.trim().length() < 1)
  //			return false;
  //		if (host.indexOf("/") >= 0)
  //			return false;
  //		if (host.indexOf("\\") >= 0)
  //			return false;
  //		if (host.indexOf(" ") >= 0)
  //			return false;
  //		return true;
  //	}

  //	protected static boolean isLocalhost(String host) {
  //		if (host == null)
  //			return false;
  //		try {
  //			if ("localhost".equals(host) || "127.0.0.1".equals(host))
  //				return true;
  //			InetAddress localHostaddr = InetAddress.getLocalHost();
  //			if (localHostaddr.getHostName().equals(host))
  //				return true;
  //		} catch (Exception e) {
  //			Trace.trace(Trace.WARNING, "Error checking for localhost", e);
  //		}
  //		return false;
  //	}
}