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/**
* $Id: mxTemporaryCellStates.js,v 1.10 2010-04-20 14:43:12 gaudenz Exp $
* Copyright (c) 2006-2010, JGraph Ltd
*/
/**
* Class: mxTemporaryCellStates
*
* Extends <mxPoint> to implement a 2-dimensional rectangle with double
* precision coordinates.
*
* Constructor: mxRectangle
*
* Constructs a new rectangle for the optional parameters. If no parameters
* are given then the respective default values are used.
*/
function mxTemporaryCellStates(view, scale, cells)
{
this.view = view;
scale = (scale != null) ? scale : 1;
// Stores the previous state
this.oldBounds = view.getGraphBounds();
this.oldStates = view.getStates();
this.oldScale = view.getScale();
// Creates space for new states
view.setStates(new mxDictionary());
view.setScale(scale);
if (cells != null)
{
// Creates virtual parent state for validation
var state = view.createState(new mxCell());
// Validates the vertices and edges without adding them to
// the model so that the original cells are not modified
for (var i = 0; i < cells.length; i++)
{
view.validateBounds(state, cells[i]);
}
var bbox = null;
for (var i = 0; i < cells.length; i++)
{
var bounds = view.validatePoints(state, cells[i]);
if (bbox == null)
{
bbox = bounds;
}
else
{
bbox.add(bounds);
}
}
if (bbox == null)
{
bbox = new mxRectangle();
}
view.setGraphBounds(bbox);
}
};
/**
* Variable: view
*
* Holds the width of the rectangle. Default is 0.
*/
mxTemporaryCellStates.prototype.view = null;
/**
* Variable: oldStates
*
* Holds the height of the rectangle. Default is 0.
*/
mxTemporaryCellStates.prototype.oldStates = null;
/**
* Variable: oldBounds
*
* Holds the height of the rectangle. Default is 0.
*/
mxTemporaryCellStates.prototype.oldBounds = null;
/**
* Variable: oldScale
*
* Holds the height of the rectangle. Default is 0.
*/
mxTemporaryCellStates.prototype.oldScale = null;
/**
* Function: destroy
*
* Returns the top, left corner as a new <mxPoint>.
*/
mxTemporaryCellStates.prototype.destroy = function()
{
this.view.setScale(this.oldScale);
this.view.setStates(this.oldStates);
this.view.setGraphBounds(this.oldBounds);
};
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