author | joehw |
Wed, 17 Feb 2016 16:32:51 -0800 | |
changeset 36029 | a847c5a7e22d |
parent 26067 | b32ccc3a76c9 |
permissions | -rw-r--r-- |
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#// Usage: jjs -fx filebrowser.js -- <start_dir> |
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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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* |
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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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* |
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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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* |
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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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// Uses -fx and javafx TreeView to visualize directories |
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if (!$OPTIONS._fx) { |
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print("Usage: jjs -fx filebrowser.js -- <start_dir>"); |
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exit(1); |
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} |
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// Java classes used |
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var File = Java.type("java.io.File"); |
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var Files = Java.type("java.nio.file.Files"); |
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// check directory argument, if passed |
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var dir = arguments.length > 0? new File(arguments[0]) : new File("."); |
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if (! dir.isDirectory()) { |
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print(dir + " is not a directory!"); |
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exit(2); |
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} |
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// JavaFX classes used |
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var FXCollections = Java.type("javafx.collections.FXCollections"); |
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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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// create a subclass of JavaFX TreeItem class |
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var LazyTreeItem = Java.extend(TreeItem); |
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// lazily filling children of a directory LazyTreeItem |
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function buildChildren(dir) { |
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var children = FXCollections.observableArrayList(); |
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var stream = Files.list(dir.toPath()); |
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stream.forEach(function(path) { |
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var file = path.toFile(); |
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var item = file.isDirectory()? |
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makeLazyTreeItem(file) : new TreeItem(file.name); |
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children.add(item); |
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}); |
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stream.close(); |
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return children; |
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} |
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// create an instance LazyTreeItem with override methods |
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function makeLazyTreeItem(dir) { |
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var item = new LazyTreeItem(dir.name) { |
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expanded: false, |
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isLeaf: function() false, |
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getChildren: function() { |
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if (! this.expanded) { |
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// call super class (TreeItem) method |
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Java.super(item).getChildren().setAll(buildChildren(dir)); |
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this.expanded = true; |
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} |
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// call super class (TreeItem) method |
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return Java.super(item).getChildren(); |
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} |
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} |
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return item; |
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} |
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// JavaFX start method |
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function start(stage) { |
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stage.title = dir.absolutePath; |
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var rootItem = makeLazyTreeItem(dir); |
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rootItem.expanded = true; |
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var tree = new TreeView(rootItem); |
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stage.scene = new Scene(tree, 300, 450); |
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stage.show(); |
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} |