author | duke |
Wed, 05 Jul 2017 21:31:37 +0200 | |
changeset 36782 | 6072af7a98be |
parent 26067 | b32ccc3a76c9 |
child 45898 | f66344672e6c |
permissions | -rw-r--r-- |
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#// Usage: jjs -fx jsonviewer.js |
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// or |
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// jjs -fx jsonviewer.js -- <url-of-json-doc> |
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/* |
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* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* - Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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8055199: Tidy up Nashorn codebase for code standards (August 2014)
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* |
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* - Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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parents:
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* |
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* - Neither the name of Oracle nor the names of its |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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8055199: Tidy up Nashorn codebase for code standards (August 2014)
attila
parents:
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changeset
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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if (! $OPTIONS._fx) { |
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print("Usage: jjs -fx jsonviewer.js -- <url-of-json-doc>"); |
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exit(1); |
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} |
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// This example downloads a JSON file from a URL and |
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// shows the same as a JavaFX tree view. |
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// Using JavaFX from Nashorn. See also: |
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// http://docs.oracle.com/javase/8/docs/technotes/guides/scripting/nashorn/javafx.html |
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// JavaFX classes used |
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var StackPane = Java.type("javafx.scene.layout.StackPane"); |
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var Scene = Java.type("javafx.scene.Scene"); |
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var TreeItem = Java.type("javafx.scene.control.TreeItem"); |
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var TreeView = Java.type("javafx.scene.control.TreeView"); |
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// read text content of a URL |
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function readTextFromURL(url) { |
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8055199: Tidy up Nashorn codebase for code standards (August 2014)
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parents:
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// equivalent to |
b32ccc3a76c9
8055199: Tidy up Nashorn codebase for code standards (August 2014)
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parents:
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// |
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// import java.io.*; |
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// import java.net.*; |
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// import java.lang.StringBuffer; |
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// |
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// only inside the 'with' statement |
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with (new JavaImporter(java.io, |
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java.net, |
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java.lang.StringBuilder)) { |
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var buf = new StringBuilder(); |
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var u = new URL(url); |
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var reader = new BufferedReader( |
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new InputStreamReader(u.openStream())); |
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var line = null; |
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try { |
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while ((line = reader.readLine()) != null) |
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buf.append(line).append('\n'); |
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} finally { |
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reader.close(); |
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} |
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return buf.toString(); |
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} |
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} |
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// Create a javafx TreeItem to view a script object |
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function treeItemForObject(obj, name) { |
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var item = new TreeItem(name); |
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for (var prop in obj) { |
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var node = obj[prop]; |
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if (typeof node == 'object') { |
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if (node == null) { |
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// skip nulls |
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continue; |
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} |
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if (Array.isArray(node) && node.length == 0) { |
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// skip empty arrays |
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continue; |
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} |
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var subitem = treeItemForObject(node, prop); |
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} else { |
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var subitem = new TreeItem(prop + ": " + node); |
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} |
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item.children.add(subitem); |
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} |
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return item; |
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} |
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var DEFAULT_URL = "http://api.openweathermap.org/data/2.5/forecast/daily?q=Chennai&mode=json&units=metric&cnt=7`"; |
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var url = arguments.length == 0? DEFAULT_URL : arguments[0]; |
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var obj = JSON.parse(readTextFromURL(url)); |
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// JavaFX start method |
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function start(stage) { |
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stage.title = "JSON Viewer"; |
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var rootItem = treeItemForObject(obj, url); |
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var tree = new TreeView(rootItem); |
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var root = new StackPane(); |
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root.children.add(tree); |
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stage.scene = new Scene(root, 300, 450); |
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stage.show(); |
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} |