3 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
4 * Copyright (C) $$Year-Rel$$ The Jalview Authors
6 * This file is part of Jalview.
8 * Jalview is free software: you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
12 * Jalview is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * PURPOSE. See the GNU General Public License for more details.
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18 * The Jalview Authors are detailed in the 'AUTHORS' file.
20 <title>Adding Groovy Support to Jalview
24 Adding Groovy Support to Jalview
27 There is currently no scripting language
28 extension within Jalview, in part because a
29 scripting API has not yet been developed.
31 <p>It is, however, really easy to embed scripting
32 engines like groovy. If groovy is detected on the
33 classpath, a new menu entry on the Desktop's Tools
34 menu will open the GroovyShell.
36 <p>Here are some scripts to get you started:</p>
37 <ul><li>Getting the title, alignment and first sequence from the current alignFrame<br>
39 def alf = Jalview.getAlignframes();
40 print alf[0].getTitle();
41 def alignment = alf[0].viewport.alignment;
42 def seq = alignment.getSequenceAt(0);
46 <h1>Getting Groovy...</h1>
48 You need the core groovy jars which include the GroovyShell. The easiest way of doing
49 this is to add the groovy-all-*.jar to the lib directory whose path is given in the java.ext.dirs property.</p>
50 <p>The is obtained from the <em>embedded</em> directory within the <a
51 href="http://dist.codehaus.org/groovy/distributions"/>groovy distribution</a>).
55 Using Java class methods from Groovy is straightforward, but currently, there isn't a set of easy to use methods for the jalview objects. A Jalview Scripting API needs to be developed to make this easier.</p>
56 <h3>Making it easier</h3>
57 <p>jalview.bin.JalviewScript could be a top level jalview instance of a script execution thread, creating and maintaining the context for scripts operating on the jalview datamodel and interfacing with the Jalview GUI.