/*
 *  Copyright 2014 Anyware Services
 *
 *  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.
 */

/**
 * This zone is a Ext.view.DragZone that is compatible with the Ametys relation system.
 * 
 * That means that any dragged record can be drop on any Ametys relation zone and will use the Ametys.relation.RelationManager to connect the results.
 * Note that a drop zone can also be a normal zone to just graphically connect the objects (drag a resource explorer file on a file widget)
 */
Ext.define('Ametys.relation.dd.AmetysViewDragZone', {
	extend: 'Ext.view.DragZone',

	/**
	 * @cfg {String} dragTextField The identifier of a field in the model that will be used as drag text (instead of the defaut 'X lines selected')
	 */
	dragTextField: null,

	onStartDrag: function(x, y)
	{
		this.callParent(arguments);
		
		if (this.dragTextField != null && this.dragData.records.length > 0)
		{
			var maxElements = 5;
			var s = "<div class='a-dndview-dragtext'>";
			for (var i = 0 ; i < Math.min(this.dragData.records.length, maxElements); i++)
			{
				if (i > 0)
				{
					s += "<br/>";
				}
				
				if (i == maxElements - 1 && i != this.dragData.records.length - 1)
				{
					s += "{{i18n PLUGINS_CORE_UI_RELATIONS_VIEW_DRAGTEXT_HELLIP_1}} " + (this.dragData.records.length - maxElements + 1) + " {{i18n PLUGINS_CORE_UI_RELATIONS_VIEW_DRAGTEXT_HELLIP_2}}";
				}
				else
				{
					s += this.dragData.records[i].get(this.dragTextField) 
				}
			}
			s += "</div>";
			
			Ext.get(this.ddel).update(s);
		}
	},
	
	onInitDrag: function(x, y)
    {
    	var item = this.callParent(arguments);
        if (item) 
        {
        	if (Ext.isFunction(this.setAmetysDragInfos))
        	{
        		this.setAmetysDragInfos(this.dragData)
        		
        		if (!this.dragData.source)
        		{
        			return false;
        		}
        	}
        }
        return item;
    }
});