"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.
*/

/* 
 * This is triggered when you delete a connector
 * @this {ConnectorDeleteCommand} 
 * @constructor
 * @author Alex Gheorghiu <alex@scriptoid.com>
 */
function ConnectorDeleteCommand(connectorId){
    this.oType = 'ConnectorDeleteCommand';
    
    /**Any sequence of many mergeable actions can be packed by the history*/
    this.mergeable = false;
    
    this.connectorId = connectorId;
    
        
    this.firstExecute = true;
    
    
    this.connector = null;        
    this.connectionpoints = null;
    this.glues = null;
}


ConnectorDeleteCommand.prototype = {
    
    /**This method got called every time the Command must execute*/
    execute : function(){  
        if(this.firstExecute){
            //---------SAVE DATA FOR UNDO------------
            //store connector
            this.connector = CONNECTOR_MANAGER.connectorGetById(this.connectorId);
            
            //store connector's connectionpoints
            this.connectionpoints = CONNECTOR_MANAGER.connectionPointGetAllByParentIdAndType(this.connectorId, ConnectionPoint.TYPE_CONNECTOR);
            
            //store glues
            this.glues = CONNECTOR_MANAGER.glueGetBySecondConnectionPointId(this.connectorId);
            
            
            
            //do the "real job"
            CONNECTOR_MANAGER.connectorRemoveById(this.connectorId, true);
            
            selectedConnectorId = -1;
            setUpEditPanel(canvasProps);
            state = STATE_NONE;
            redraw = true;       
            
            this.firstExecute = false;
        }
        else{ //a redo
            throw "Not implemented";
        }
    },

    
    /**This method should be called every time the Command should be undone*/
    undo : function(){        
        if(this.connector){
            //add back the connecor
            CONNECTOR_MANAGER.connectors.push(this.connector);
            
            //add back the connection points
            CONNECTOR_MANAGER.connectionPoints = CONNECTOR_MANAGER.connectionPoints.concat(this.connectionpoints);
            
            //add back the glues
            CONNECTOR_MANAGER.glues  = CONNECTOR_MANAGER.glues.concat(this.glues);
            
            
            redraw = true;
        }
    }
}