nashorn/samples/jsonviewer.js
author joehw
Wed, 17 Feb 2016 16:32:51 -0800
changeset 36029 a847c5a7e22d
parent 26067 b32ccc3a76c9
child 45898 f66344672e6c
permissions -rw-r--r--
8146237: PREFER from Features API taking precedence over catalog file Reviewed-by: lancea
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
24283
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
     1
#// Usage: jjs -fx jsonviewer.js
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
     2
// or
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
     3
//        jjs -fx jsonviewer.js -- <url-of-json-doc>
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
     4
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
     5
/*
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
     6
 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
26067
b32ccc3a76c9 8055199: Tidy up Nashorn codebase for code standards (August 2014)
attila
parents: 24283
diff changeset
     7
 *
24283
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
     8
 * Redistribution and use in source and binary forms, with or without
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
     9
 * modification, are permitted provided that the following conditions
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    10
 * are met:
26067
b32ccc3a76c9 8055199: Tidy up Nashorn codebase for code standards (August 2014)
attila
parents: 24283
diff changeset
    11
 *
24283
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    12
 *   - Redistributions of source code must retain the above copyright
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    13
 *     notice, this list of conditions and the following disclaimer.
26067
b32ccc3a76c9 8055199: Tidy up Nashorn codebase for code standards (August 2014)
attila
parents: 24283
diff changeset
    14
 *
24283
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    15
 *   - Redistributions in binary form must reproduce the above copyright
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    16
 *     notice, this list of conditions and the following disclaimer in the
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    17
 *     documentation and/or other materials provided with the distribution.
26067
b32ccc3a76c9 8055199: Tidy up Nashorn codebase for code standards (August 2014)
attila
parents: 24283
diff changeset
    18
 *
24283
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    19
 *   - Neither the name of Oracle nor the names of its
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    20
 *     contributors may be used to endorse or promote products derived
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    21
 *     from this software without specific prior written permission.
26067
b32ccc3a76c9 8055199: Tidy up Nashorn codebase for code standards (August 2014)
attila
parents: 24283
diff changeset
    22
 *
24283
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    23
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    24
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    25
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    26
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    27
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    28
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    29
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    30
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    31
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    32
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    33
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    34
 */
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    35
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    36
if (! $OPTIONS._fx) {
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    37
    print("Usage: jjs -fx jsonviewer.js -- <url-of-json-doc>");
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    38
    exit(1);
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    39
}
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    40
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    41
// This example downloads a JSON file from a URL and
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    42
// shows the same as a JavaFX tree view.
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    43
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    44
// Using JavaFX from Nashorn. See also:
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    45
// http://docs.oracle.com/javase/8/docs/technotes/guides/scripting/nashorn/javafx.html
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    46
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    47
// JavaFX classes used
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    48
var StackPane = Java.type("javafx.scene.layout.StackPane");
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    49
var Scene     = Java.type("javafx.scene.Scene");
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    50
var TreeItem  = Java.type("javafx.scene.control.TreeItem");
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    51
var TreeView  = Java.type("javafx.scene.control.TreeView");
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    52
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    53
// read text content of a URL
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    54
function readTextFromURL(url) {
26067
b32ccc3a76c9 8055199: Tidy up Nashorn codebase for code standards (August 2014)
attila
parents: 24283
diff changeset
    55
    // equivalent to
b32ccc3a76c9 8055199: Tidy up Nashorn codebase for code standards (August 2014)
attila
parents: 24283
diff changeset
    56
    //
24283
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    57
    //    import java.io.*;
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    58
    //    import java.net.*;
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    59
    //    import java.lang.StringBuffer;
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    60
    //
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    61
    // only inside the 'with' statement
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    62
    with (new JavaImporter(java.io,
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    63
        java.net,
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    64
        java.lang.StringBuilder)) {
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    65
        var buf = new StringBuilder();
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    66
        var u = new URL(url);
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    67
        var reader = new BufferedReader(
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    68
            new InputStreamReader(u.openStream()));
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    69
        var line = null;
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    70
        try {
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    71
            while ((line = reader.readLine()) != null)
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    72
                buf.append(line).append('\n');
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    73
        } finally {
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    74
            reader.close();
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    75
        }
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    76
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    77
        return buf.toString();
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    78
    }
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    79
}
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    80
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    81
// Create a javafx TreeItem to view a script object
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    82
function treeItemForObject(obj, name) {
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    83
    var item = new TreeItem(name);
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    84
    for (var prop in obj) {
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    85
       var node = obj[prop];
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    86
       if (typeof node == 'object') {
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    87
           if (node == null) {
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    88
               // skip nulls
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    89
               continue;
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    90
           }
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    91
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    92
           if (Array.isArray(node) && node.length == 0) {
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    93
               // skip empty arrays
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    94
               continue;
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    95
           }
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    96
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    97
           var subitem = treeItemForObject(node, prop);
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    98
       } else {
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
    99
           var subitem = new TreeItem(prop + ": " + node);
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   100
       }
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   101
       item.children.add(subitem);
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   102
    }
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   103
    return item;
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   104
}
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   105
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   106
var DEFAULT_URL = "http://api.openweathermap.org/data/2.5/forecast/daily?q=Chennai&amp;mode=json&amp;units=metric&amp;cnt=7`";
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   107
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   108
var url = arguments.length == 0? DEFAULT_URL : arguments[0];
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   109
var obj = JSON.parse(readTextFromURL(url));
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   110
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   111
// JavaFX start method
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   112
function start(stage) {
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   113
    stage.title = "JSON Viewer";
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   114
    var rootItem = treeItemForObject(obj, url);
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   115
    var tree = new TreeView(rootItem);
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   116
    var root = new StackPane();
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   117
    root.children.add(tree);
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   118
    stage.scene = new Scene(root, 300, 450);
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   119
    stage.show();
bda887c0088a 8042600: Add more samples in nashorn/samples directory
sundar
parents:
diff changeset
   120
}