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 }