| /** |
| * 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. |
| */ |
| |
| var priceHandler = |
| { |
| _price: function(message) |
| { |
| if (message != null) { |
| |
| var price = parseFloat(message.getAttribute('bid')) |
| var symbol = message.getAttribute('stock') |
| var movement = message.getAttribute('movement') |
| if (movement == null) { |
| movement = 'up' |
| } |
| |
| var row = document.getElementById(symbol) |
| if (row) { |
| // perform portfolio calculations |
| var value = asFloat(find(row, 'amount')) * price |
| var pl = value - asFloat(find(row, 'cost')) |
| |
| // now lets update the HTML DOM |
| find(row, 'price').innerHTML = fixedDigits(price, 2) |
| find(row, 'value').innerHTML = fixedDigits(value, 2) |
| find(row, 'pl').innerHTML = fixedDigits(pl, 2) |
| find(row, 'price').className = movement |
| find(row, 'pl').className = pl >= 0 ? 'up' : 'down' |
| } |
| } |
| } |
| }; |
| |
| |
| function portfolioPoll(first) |
| { |
| if (first) |
| { |
| amq.addListener('stocks','topic://STOCKS.*',priceHandler._price); |
| } |
| } |
| |
| amq.addPollHandler(portfolioPoll); |
| |
| |
| /// ----------------- |
| // Original code by Joe Walnes |
| // ----------------- |
| |
| /*** Convenience methods, added as mixins to standard classes (object prototypes) ***/ |
| |
| /** |
| * Return number as fixed number of digits. |
| */ |
| function fixedDigits(t, digits) { |
| return (t.toFixed) ? t.toFixed(digits) : this |
| } |
| |
| /** |
| * Find direct child of an element, by id. |
| */ |
| function find(t, id) { |
| for (i = 0; i < t.childNodes.length; i++) { |
| var child = t.childNodes[i] |
| if (child.id == id) { |
| return child |
| } |
| } |
| return null |
| } |
| |
| /** |
| * Return the text contents of an element as a floating point number. |
| */ |
| function asFloat(t) { |
| return parseFloat(t.innerHTML) |
| } |