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paper-calculator-math.html
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paper-calculator-math.html
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<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<link rel="import" href="../polymer/polymer.html">
<dom-module id="paper-calculator-math">
<script>
Polymer({
is:"paper-calculator-math",
properties:{
expression: {
type: String,
notify: true
},
result: {
type: String,
notify: true
}
},
dictionary : {
'A' : 71.037114,
'R' : 156.101111,
'N' : 114.042927,
'D' : 115.026943,
'C' : 103.009185,
'E' : 129.042593,
'Q' : 128.058578,
'G' : 57.021464,
'H' : 137.058912,
'I' : 113.084064,
'L' : 113.084064,
'K' : 128.094963,
'M' : 131.040485,
'F' : 147.068414,
'P' : 97.052764,
'S' : 87.032028,
'T' : 101.047679,
'W' : 186.079313,
'Y' : 163.06333,
'V' : 99.068414,
'ALA' : 71.037114,
'ARG' : 156.101111,
'ASN' : 114.042927,
'ASP' : 115.026943,
'CYS' : 103.009185,
'GLU' : 129.042593,
'GLN' : 128.058578,
'GLY' : 57.021464,
'HIS' : 137.058912,
'ILE' : 113.084064,
'LEU' : 113.084064,
'LYS' : 128.094963,
'MET' : 131.040485,
'PHE' : 147.068414,
'PRO' : 97.052764,
'SER' : 87.032028,
'THR' : 101.047679,
'TRP' : 186.079313,
'TYR' : 163.06333,
'VAL' : 99.068414,
'PEN': 132.0422587,
'DHEX': 146.0579088,
'HEX' : 162.0528234,
'HEXA': 176.032088,
'HEXNAC':203.0793725,
'KDN': 250.0688674,
'NEUAC': 291.0954165,
'NEUGC': 307.0903312,
'SULF': 79.9568146,
'PHOS': 79.96633,
'WATER': 18.010565,
'H2O': 18.010565,
'PROTON': 1.00727647,
'ELECTRON': 0.000548579909,
'KPLUS': 38.963707,
'NAPLUS': 22.989768,
'ZERO': 0
},
eval: function() {
var s = this.expression;
s = s.replace(/\u00D7/g, '*')
.replace(/\u00F7/g, '/')
.replace(new RegExp('H\u20820', 'g'),"water")
.replace(new RegExp("H\u207A", 'g'),"proton")
.replace(new RegExp('e\u207b', 'g'),"electron")
.replace(new RegExp('h2o', 'g'),"water")
.replace(new RegExp('K\u207A', 'g'),"kplus")
.replace(new RegExp('Na\u207A', 'g'),"naplus");
var interpExp = "";
var notInterSymbol = "";
for (var pointer = 0, len = s.length; pointer < len; pointer++) {
var char = s[pointer];
if(char === "+" || char === "-" || char === "*" || char === "/" || char === "(" || char === ")"){
if(notInterSymbol && isNaN(notInterSymbol)){
interpExp = interpExp.concat(this._translateToMass(notInterSymbol));
notInterSymbol="";
}
if(notInterSymbol && !isNaN(notInterSymbol)){
interpExp = interpExp.concat(notInterSymbol);
notInterSymbol="";
}
interpExp = interpExp.concat(char);
} else{
notInterSymbol = notInterSymbol.concat(char);
}
}
if(notInterSymbol){
interpExp = interpExp.concat(this._translateToMass(notInterSymbol));
}
try {
var container = eval(interpExp);
if(container % 1 === 0){
this.result = container.toString();
} else {
this.result = container.toFixed(4);
}
} catch (x) {
this.result = '?';
}
},
_translateToMass: function(symbol){
var symbolMass = this.dictionary[symbol.toUpperCase()];
if(symbolMass || symbolMass === 0){
return parseFloat(symbolMass);
}
if(!isNaN(symbol)){
return parseFloat(symbol);
}
return "?"
}
});
</script>
</dom-module>