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/**
* $Id: mxDictionary.js,v 1.12 2012-04-26 08:08:54 gaudenz Exp $
* Copyright (c) 2006-2010, JGraph Ltd
*/
/**
* Class: mxDictionary
*
* A wrapper class for an associative array with object keys. Note: This
* implementation uses <mxObjectIdentitiy> to turn object keys into strings.
*
* Constructor: mxEventSource
*
* Constructs a new dictionary which allows object to be used as keys.
*/
function mxDictionary()
{
this.clear();
};
/**
* Function: map
*
* Stores the (key, value) pairs in this dictionary.
*/
mxDictionary.prototype.map = null;
/**
* Function: clear
*
* Clears the dictionary.
*/
mxDictionary.prototype.clear = function()
{
this.map = {};
};
/**
* Function: get
*
* Returns the value for the given key.
*/
mxDictionary.prototype.get = function(key)
{
var id = mxObjectIdentity.get(key);
return this.map[id];
};
/**
* Function: put
*
* Stores the value under the given key and returns the previous
* value for that key.
*/
mxDictionary.prototype.put = function(key, value)
{
var id = mxObjectIdentity.get(key);
var previous = this.map[id];
this.map[id] = value;
return previous;
};
/**
* Function: remove
*
* Removes the value for the given key and returns the value that
* has been removed.
*/
mxDictionary.prototype.remove = function(key)
{
var id = mxObjectIdentity.get(key);
var previous = this.map[id];
delete this.map[id];
return previous;
};
/**
* Function: getKeys
*
* Returns all keys as an array.
*/
mxDictionary.prototype.getKeys = function()
{
var result = [];
for (var key in this.map)
{
result.push(key);
}
return result;
};
/**
* Function: getValues
*
* Returns all values as an array.
*/
mxDictionary.prototype.getValues = function()
{
var result = [];
for (var key in this.map)
{
result.push(this.map[key]);
}
return result;
};
/**
* Function: visit
*
* Visits all entries in the dictionary using the given function with the
* following signature: function(key, value) where key is a string and
* value is an object.
*
* Parameters:
*
* visitor - A function that takes the key and value as arguments.
*/
mxDictionary.prototype.visit = function(visitor)
{
for (var key in this.map)
{
visitor(key, this.map[key]);
}
};
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