1 #jjs -fx xmlviewer.js [-- <url-of-xml-doc>]
   2 
   3 /*
   4  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  *   - Redistributions of source code must retain the above copyright
  11  *     notice, this list of conditions and the following disclaimer.
  12  *
  13  *   - Redistributions in binary form must reproduce the above copyright
  14  *     notice, this list of conditions and the following disclaimer in the
  15  *     documentation and/or other materials provided with the distribution.
  16  *
  17  *   - Neither the name of Oracle nor the names of its
  18  *     contributors may be used to endorse or promote products derived
  19  *     from this software without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  22  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  23  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  25  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  26  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  28  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  29  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  30  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  31  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33 
  34 if (! $OPTIONS._fx) {
  35     print("Usage: jjs -fx xmlviewer.js [-- <url-of-xml-doc>]");
  36     exit(1);
  37 }
  38 
  39 // Using JavaFX from Nashorn. See also:
  40 // http://docs.oracle.com/javase/8/docs/technotes/guides/scripting/nashorn/javafx.html
  41 
  42 // Simple sample to view a XML document as a JavaFX tree.
  43 
  44 // JavaFX classes used
  45 var StackPane = Java.type("javafx.scene.layout.StackPane");
  46 var Scene     = Java.type("javafx.scene.Scene");
  47 var TreeItem  = Java.type("javafx.scene.control.TreeItem");
  48 var TreeView  = Java.type("javafx.scene.control.TreeView");
  49 
  50 // XML DocumentBuilderFactory
  51 var DocBuilderFac = Java.type("javax.xml.parsers.DocumentBuilderFactory");
  52 var Attr = Java.type("org.w3c.dom.Attr");
  53 var Element = Java.type("org.w3c.dom.Element");
  54 var Text = Java.type("org.w3c.dom.Text");
  55 
  56 // parse XML from uri and return Document
  57 function parseXML(uri) {
  58     var docBuilder = DocBuilderFac.newInstance().newDocumentBuilder();
  59     docBuilder.validating = false;
  60     return docBuilder["parse(java.lang.String)"](uri);
  61 }
  62 
  63 // Create a javafx TreeItem to view a XML element
  64 function treeItemForObject(element, name) {
  65     var item = new TreeItem(name);
  66     item.expanded = true;
  67     var attrs = element.attributes;
  68     var numAttrs = attrs.length;
  69     for (var a = 0; a < numAttrs; a++) {
  70         var attr = attrs.item(a);
  71         var subitem = new TreeItem(attr.name + " = " + attr.value);
  72         item.children.add(subitem);
  73     }
  74 
  75     var childNodes = element.childNodes;
  76     var numNodes = childNodes.length;
  77     for (var n = 0; n < numNodes; n++) {
  78        var node = childNodes.item(n);
  79        if (node instanceof Element) {
  80            var subitem = treeItemForObject(node, node.tagName);
  81            item.children.add(subitem);
  82        }
  83     }
  84     
  85     return item;
  86 }
  87 
  88 // Ofcourse, the best default URL is cricket score :) 
  89 var DEFAULT_URL = "http://synd.cricbuzz.com/j2me/1.0/livematches.xml";
  90 
  91 var url = arguments.length == 0? DEFAULT_URL : arguments[0];
  92 var element = parseXML(url).getDocumentElement();
  93 
  94 // JavaFX start method
  95 function start(stage) {
  96     stage.title = "XML Viewer: " + url;
  97     var rootItem = treeItemForObject(element, element.tagName);
  98     var tree = new TreeView(rootItem);
  99     var root = new StackPane();
 100     root.children.add(tree);
 101     stage.scene = new Scene(root, 300, 450);
 102     stage.show();
 103 }