/*
 * $Id: SomeItemInputDialog.java,v 1.1 2004-10-05 20:51:57 jsurfer Exp $
 * Copyright Narushima Hironori. All rights reserved.
 */
package net.sourceforge.phpeclipse.wizards.html;

import org.eclipse.jface.dialogs.*;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

/**
 * 
 */
public class SomeItemInputDialog extends Dialog {

	String dialogTitle;
	String[] inputMessages;
	
	IInputValidator[] validators;
	Text[] texts;
	Text error;
	
	String[] errorMsgs;
	String[] resultValues;

	public SomeItemInputDialog(Shell parentShell, String dialogTitle, String[] inputMessages, IInputValidator[] validators) {
		super(parentShell);
		if(inputMessages.length != validators.length){
			throw new IllegalArgumentException("Specify validator counts and input message count is not same.");
		}
		
		this.dialogTitle = dialogTitle;
		this.inputMessages = (String[])inputMessages.clone();
		this.validators = (IInputValidator[])validators.clone();
		this.errorMsgs = new String[validators.length];
		
		setShellStyle(SWT.RESIZE | getShellStyle());
	}

	protected void configureShell(Shell newShell) {
		super.configureShell(newShell);
		newShell.setText(dialogTitle);
	}

	protected Control createDialogArea(Composite parent) {
		Composite base = (Composite)super.createDialogArea(parent);
		GridLayout gl = new GridLayout(2, false);
		gl.marginWidth = 4;
		gl.marginHeight = 6;
		base.setLayout(gl);
		
		texts = new Text[inputMessages.length];
		for(int i=0; i<inputMessages.length; i++){
			new Label(base, SWT.NONE).setText(inputMessages[i] + ":");
			
			final int index = i;
			Text t = new Text(base, SWT.BORDER);
			t.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
			t.addModifyListener(new ModifyListener() {
				public void modifyText(ModifyEvent e) {
					refreshValidator(index);
				}
			});
			texts[i] = t;
		}
		
		error = new Text(base, SWT.READ_ONLY);
		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
		gd.horizontalSpan = 2;
		error.setLayoutData(gd);
		
		return base;
	}
	
	void refreshValidator(int index){
		String data = texts[index].getText();
		IInputValidator validator = validators[index];
		if( validator != null){
			errorMsgs[index] = validator.isValid(data);
		}
		
		Button okButton = getButton(IDialogConstants.OK_ID);
		for(int i=0; i<errorMsgs.length; i++){
			String msg = errorMsgs[i];
			if(msg != null){
				error.setText(msg);
				okButton.setEnabled(false);
				return;
			}
		}
		error.setText("");
		okButton.setEnabled(true);
	}

	public String[] getValues(){
		return (String[]) resultValues.clone();
	}

	protected Point getInitialSize() {
		Point p = super.getInitialSize();
		return new Point( p.x * 2, (int)(p.y * 1.25) );
	}

	protected void okPressed() {
		resultValues = new String[texts.length];
		for (int i = 0; i < texts.length; i++) {
			resultValues[i] = texts[i].getText();
		}
		super.okPressed();
	}

}