/*
 * Copyright (c) 2013, grossmann
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * * Neither the name of the jo-widgets.org nor the
 *   names of its contributors may be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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package org.jowidgets.examples.common.tutorial;

import org.jowidgets.api.command.CommandAction;
import org.jowidgets.api.command.EnabledState;
import org.jowidgets.api.command.IAction;
import org.jowidgets.api.command.IActionBuilder;
import org.jowidgets.api.command.ICommandExecutor;
import org.jowidgets.api.command.IEnabledState;
import org.jowidgets.api.command.IExecutionContext;
import org.jowidgets.api.image.IconsSmall;
import org.jowidgets.api.model.item.ICheckedItemModel;
import org.jowidgets.api.toolkit.Toolkit;
import org.jowidgets.common.widgets.controller.IItemStateListener;
import org.jowidgets.tools.command.AbstractEnabledChecker;

public final class SaveActionFactory {

    private SaveActionFactory() {}

    public static IAction create(final ICheckedItemModel checkedItem) {
        final IActionBuilder builder = CommandAction.builder();
        builder.setText("Save");
        builder.setIcon(IconsSmall.DISK);
        builder.setCommand(new SaveCommand(), new SaveEnabledChecker(checkedItem));
        return builder.build();
    }

    private static final class SaveCommand implements ICommandExecutor {
        @Override
        public void execute(final IExecutionContext executionContext) throws Exception {
            Toolkit.getMessagePane().showInfo(executionContext, "Save done!");
        }
    }

    private static final class SaveEnabledChecker extends AbstractEnabledChecker {

        private final ICheckedItemModel checkedItem;

        private SaveEnabledChecker(final ICheckedItemModel checkedItem) {
            this.checkedItem = checkedItem;
            checkedItem.addItemListener(new IItemStateListener() {
                @Override
                public void itemStateChanged() {
                    fireChangedEvent();
                }
            });
        }

        @Override
        public IEnabledState getEnabledState() {
            if (!checkedItem.isSelected()) {
                return EnabledState.disabled("Checked item must be enabled");
            }
            else {
                return EnabledState.ENABLED;
            }
        }
    }

}