xmlviewer.js revision 1206:829e3b95b319 
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
34if (! $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
45var StackPane = Java.type("javafx.scene.layout.StackPane");
46var Scene     = Java.type("javafx.scene.Scene");
47var TreeItem  = Java.type("javafx.scene.control.TreeItem");
48var TreeView  = Java.type("javafx.scene.control.TreeView");
49
50// XML DocumentBuilderFactory
51var DocBuilderFac = Java.type("javax.xml.parsers.DocumentBuilderFactory");
52var Attr = Java.type("org.w3c.dom.Attr");
53var Element = Java.type("org.w3c.dom.Element");
54var Text = Java.type("org.w3c.dom.Text");
55
56// parse XML from uri and return Document
57function 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
64function 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 :)
89var DEFAULT_URL = "http://synd.cricbuzz.com/j2me/1.0/livematches.xml";
90
91var url = arguments.length == 0? DEFAULT_URL : arguments[0];
92var element = parseXML(url).getDocumentElement();
93
94// JavaFX start method
95function 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}
104