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/**
 * Copyright 2018 Mike Hummel
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package de.mhus.lib.vaadin;

import com.vaadin.event.ShortcutAction;
import com.vaadin.event.ShortcutListener;
import com.vaadin.shared.ui.ContentMode;
import com.vaadin.ui.Label;
import com.vaadin.ui.PasswordField;
import com.vaadin.ui.UI;
import com.vaadin.ui.VerticalLayout;

public class PasswordInputDialog extends ModalDialog {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private String message;
	private Listener listener;
	private Action confirm;
	private Action cancel;
	protected Label label;
	private PasswordField textField;
	private String txtInput;
	private Action result;

	public PasswordInputDialog(String title, String message, String txtInput, String txtConfirm, String txtCancel, Listener listener) throws Exception {

		this.message = message;
		this.listener = listener;
		this.txtInput = txtInput;
		confirm = new Action("confirm", txtConfirm);
		cancel = new Action("cancel", txtCancel);
		actions = new Action[] {confirm,cancel};
		initUI();
		setCaption(title);
		
	}
	
	public Label getLabel() {
		return label;
	}
	
	public PasswordField getTextField() {
		return textField;
	}
	
	@Override
	protected void initContent(VerticalLayout layout) throws Exception {
		label = new Label(message);
		label.setContentMode(ContentMode.HTML);
		layout.addComponent(label);
		
		textField = new PasswordField();
		textField.setValue(txtInput);
		textField.setWidth("100%");
		textField.focus();
		
		textField.addShortcutListener(new ShortcutListener("Confirm", ShortcutAction.KeyCode.ENTER, null) {
			private static final long serialVersionUID = 1L;

				@Override
			    public void handleAction(Object sender, Object target) {
			    	confirm.doAction(PasswordInputDialog.this);
			    }
			});

		layout.addComponent(textField);
		txtInput = null;
	}

	@Override
	protected boolean doAction(Action action) {
		result = action;
		if (action.equals(confirm)) txtInput = (String) textField.getValue();
		if (listener != null) {
			if (action.equals(confirm) && !listener.validate(txtInput))
				return false;
			listener.onClose(this);
		}
		return true;
	}

	public static void show(UI parent, String title, String txtInput, String message, String txtConfirm, String txtCancel, Listener listener) {
		try {
//			if (parent == null) parent = UI.getCurrent();
			new PasswordInputDialog(title,message,txtInput,txtConfirm,txtCancel,listener).show(parent);
		} catch (Exception e) {
		}
	}

	public static interface Listener {

		public boolean validate(String txtInput);
		
		public void onClose(PasswordInputDialog dialog);
		
	}

	public boolean isConfirmed() {
		return result == confirm;
	}
	
	public boolean isCancel() {
		return result == cancel;
	}

	public String getInputText() {
		return txtInput;
	}

}