"use strict";

/*
Copyright [2014] [Diagramo]

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.
*/

/**
 * Object that is used to undo actions when figures are grouped or ungrouped
 * @this {GroupDestroyCommand} 
 * @constructor
 * @param groupId {Numeric} - the id of the group
 */
function GroupDestroyCommand(groupId){
    this.groupId = groupId;
    
    this.figuresIds = STACK.figureGetIdsByGroupId(groupId);
    
    this.firstExecute = true;
    this.oType = "GroupDestroyCommand";            
}

GroupDestroyCommand.prototype = {
    
    /**Split group apart*/
    execute : function(){
        STACK.groupDestroy(this.groupId);
        
        selectedGroupId = -1;
        state = STATE_NONE;
    },
    
    
    /**Group figures back*/
    undo : function(){
        
        //recreate create group
        var g = new Group();
        g.id = this.groupId; //copy old Id
        g.permanent = true;

        //add figures to group
        for(var i=0; i < this.figuresIds.length; i++){
            var f = STACK.figureGetById(this.figuresIds[i]);
            f.groupId = g.id;
        }
            
        var bounds = g.getBounds();
        g.rotationCoords.push(new Point(bounds[0]+(bounds[2]-bounds[0])/2, bounds[1] + (bounds[3] - bounds[1]) / 2));
        g.rotationCoords.push(new Point(bounds[0]+(bounds[2]-bounds[0])/2, bounds[1]));

        //save group to STACK
        STACK.groups.push(g);
        
        state = STATE_GROUP_SELECTED;
        selectedGroupId = this.groupId;       
    }
}