/*
 *  Copyright 2012 GWT-Bootstrap
 *
 *  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 com.github.gwtbootstrap.client.ui;

import com.github.gwtbootstrap.client.ui.base.HasAlternateSize;
import com.github.gwtbootstrap.client.ui.base.HasId;
import com.github.gwtbootstrap.client.ui.base.HasSize;
import com.github.gwtbootstrap.client.ui.base.HasStyle;
import com.github.gwtbootstrap.client.ui.base.IsResponsive;
import com.github.gwtbootstrap.client.ui.base.IsSearchQuery;
import com.github.gwtbootstrap.client.ui.base.ResponsiveHelper;
import com.github.gwtbootstrap.client.ui.base.SearchQueryStyleHelper;
import com.github.gwtbootstrap.client.ui.base.SizeHelper;
import com.github.gwtbootstrap.client.ui.base.Style;
import com.github.gwtbootstrap.client.ui.base.StyleHelper;
import com.github.gwtbootstrap.client.ui.constants.AlternateSize;
import com.github.gwtbootstrap.client.ui.constants.Constants;
import com.github.gwtbootstrap.client.ui.constants.Device;
import com.google.gwt.dom.client.Element;

/**
 * A ListBox for Bootstrap form.
 * 
 * @since 2.0.4.0
 * 
 * @author ohashi keisuke
 * 
 */
public class ListBox extends com.google.gwt.user.client.ui.ListBox implements HasSize, HasAlternateSize, IsSearchQuery, HasId , IsResponsive , HasStyle{

        {
                setStyleName("");
        }

        /**
         * Creates an empty list box in single selection mode.
         */
        public ListBox() {
                super();
        }

        /**
         * Creates an empty list box. The preferred way to enable multiple
         * selections is to use this constructor rather than
         * {@link #setMultipleSelect(boolean)}.
         * 
         * @param isMultipleSelect
         *            specifies if multiple selection is enabled
         */
        public ListBox(boolean isMultipleSelect) {
                super(isMultipleSelect);
        }

        /**
         * This constructor may be used by subclasses to explicitly use an existing
         * element. This element must be a <select> element.
         * 
         * @param element
         *            the element to be used
         */
        protected ListBox(Element element) {
                super(element);
        }

        /**
         * {@inheritDoc}
         */
        @Override
        public void setAlternateSize(AlternateSize size) {
                StyleHelper.changeStyle(this, size, AlternateSize.class);
        }

        /**
         * {@inheritDoc}
         */
        @Override
        public void setSize(int size) {
                SizeHelper.setSize(this, size);
        }

        /**
         * Get Selected Value.
         * <p>
         * If set multiple,return first selected value.
         * @return Selected Value.(If there is nothing selected item,return null)
         */
        public String getValue() {

                if(getSelectedIndex() == -1) {
                        return null;
                }

                return getValue(getSelectedIndex());
        }

        /**
         * {@inheritDoc}
         */
        @Override
        public void setSearchQuery(boolean searchQuery) {
                SearchQueryStyleHelper.setSearchQuery(this, searchQuery);
        }

        /**
         * {@inheritDoc}
         */
        @Override
        public boolean isSearchQuery() {
                return SearchQueryStyleHelper.isSearchQuery(this);
        }

        /**
         * {@inheritDoc}
         */
        @Override
        public String getId() {
                return getElement().getId();
        }

        /**
         * {@inheritDoc}
         */
        @Override
        public void setId(String id) {
                getElement().setId(id);
        }

        /**
         * {@inheritDoc}
         */
        @Override
        public void setEnabled(boolean enabled) {
                super.setEnabled(enabled);
                if(enabled) {
                        removeStyleName(Constants.DISABLED);
                } else {
                        addStyleName(Constants.DISABLED);
                }
        }

        /**
         * Selects item which has the given value. If value
         * is not found, nothing is done.
         * @param value to be selected (<code>null</code>-safe)
         */
        public void setSelectedValue(String value) {
                if (value == null) {
                        value = "";
                }
                for(int i = 0; i < getItemCount(); i++) {
                        if (getValue(i).equals(value)) {
                                setSelectedIndex(i);
                                return;
                        }
                }
        }
        

        /**
         * {@inheritDoc}
         */
        @Override
        public void setShowOn(Device device) {
                ResponsiveHelper.setShowOn(this, device);
        }

        /**
         * {@inheritDoc}
         */
        @Override
        public void setHideOn(Device device) {
                ResponsiveHelper.setHideOn(this, device);
                
        }

        /**
         * {@inheritDoc}
         */
        @Override
        public void setStyle(Style style) {
                StyleHelper.setStyle(this, style);
        }

        /**
         * {@inheritDoc}
         */
        @Override
        public void addStyle(Style style) {
                StyleHelper.addStyle(this, style);
        }

        /**
         * {@inheritDoc}
         */
        @Override
        public void removeStyle(Style style) {
                StyleHelper.removeStyle(this, style);
                
        }
}