/*
 Copyright (c) 2014 Ahomé Innovation Technologies. All rights reserved.

 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.ait.toolkit.sencha.ext.client.grid;

import com.ait.toolkit.sencha.ext.client.core.Component;
import com.ait.toolkit.sencha.ext.client.core.config.XType;
import com.ait.toolkit.sencha.ext.client.grid.column.GridColumn;
import com.ait.toolkit.sencha.ext.client.ui.Container;
import com.google.gwt.core.client.JavaScriptObject;

/**
 * Container which holds headers and is docked at the top or bottom of a
 * TablePanel. The HeaderContainer drives resizing/moving/hiding of columns
 * within the TableView. As headers are hidden, moved or resized the
 * headercontainer is responsible for triggering changes within the view.
 */
public class HeaderContainer extends Container {

    private static JavaScriptObject configPrototype;

    protected JavaScriptObject getConfigPrototype() {
        return configPrototype;
    }

    public String getXType() {
        return XType.HEADER_CONTAINER.getValue();
    }

    protected HeaderContainer() {
    }

    protected HeaderContainer(JavaScriptObject obj) {
        super(obj);
    }

    /**
     * True if this HeaderContainer is in fact a group header which contains sub
     * headers.
     */
    public boolean isGroupHeader() {
        return getAttributeAsBoolean("isGroupHeader");
    }

    /**
     * Returns the number of grid columns descended from this HeaderContainer.
     * Group Columns are HeaderContainers. All grid columns are returned,
     * including hidden ones.
     */
    public native int getColumnCount()/*-{
		var component = this.@com.ait.toolkit.sencha.ext.client.core.Component::getOrCreateJsObj()();
		return component.getColumnCount();
    }-*/;

    /**
     * Returns the number of grid columns descended from this HeaderContainer.
     * Group Columns are HeaderContainers. All grid columns are returned,
     * including hidden ones.
     */
    public native void add(GridColumn col)/*-{
		var component = this.@com.ait.toolkit.sencha.ext.client.core.Component::getOrCreateJsObj()();
		component.add(col.@com.ait.toolkit.core.client.JsObject::getJsObj()());
    }-*/;

    public static HeaderContainer cast(Component c) {
        return new HeaderContainer(c.getOrCreateJsObj());
    }

}