wisemapping-open-source/mindplot/src/main/javascript/commands/DragTopicCommand.js

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*
* $Id: file 64488 2006-03-10 17:32:09Z paulo $
*/

mindplot.commands.DragTopicCommand = mindplot.Command.extend(
{
    initialize: function(topicId)
    {
        core.assert(topicId, "topicId must be defined");
        this._topicId = topicId;
        this._parentTopic = null;
        this._position = null;
        this._order = null;
        this._id = mindplot.Command._nextUUID();
    },
    execute: function(commandContext)
    {

        var topic = commandContext.findTopics([this._topicId])[0];

        // Save old position ...
        var origParentTopic = topic.getOutgoingConnectedTopic();
        var origOrder = null;
        var origPosition = null;
        if (topic.getType() == mindplot.NodeModel.MAIN_TOPIC_TYPE && origParentTopic != null && origParentTopic.getType() == mindplot.NodeModel.MAIN_TOPIC_TYPE)
        {
            // In this case, topics are positioned using order ...
            origOrder = topic.getOrder();
        } else
        {
            origPosition = topic.getPosition().clone();
        }

        // Disconnect topic ..
        if (origParentTopic)
        {
            commandContext.disconnect(topic);
        }


        // Set topic position ...
        if (this._position != null)
        {
            // Set position ...
            topic.setPosition(this._position);

        } else if (this._order != null)
        {
            topic.setOrder(this._order);
        } else
        {
            core.assert("Illegal commnad state exception.");
        }
        this._order = origOrder;
        this._position = origPosition;

        // Finally, connect topic ...
        if (this._parentId)
        {
            var parentTopic = commandContext.findTopics([this._parentId])[0];
            commandContext.connect(topic, parentTopic);
        }

        // Backup old parent id ...
        this._parentId = null;
        if (origParentTopic)
        {
            this._parentId = origParentTopic.getId();
        }

    },
    undoExecute: function(commandContext)
    {
        this.execute(commandContext);

    },
    setPosition: function(point)
    {
        this._position = point;
    },
    setParetTopic: function(topic) {
        this._parentId = topic.getId();

    },
    setOrder: function(order)
    {
        this._order = order
    }
});