/*
* BeanShellAction.java - BeanShell action
* :tabSize=4:indentSize=4:noTabs=false:
* :folding=explicit:collapseFolds=1:
*
* Copyright (C) 2000, 2003 Slava Pestov
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package org.gjt.sp.jedit;
import org.gjt.sp.jedit.bsh.*;
import java.lang.ref.SoftReference;
import java.awt.Component;
import org.gjt.sp.jedit.gui.BeanShellErrorDialog;
import org.gjt.sp.util.Log;
/**
* An action that evaluates BeanShell code when invoked. BeanShell actions are
* usually loaded from <code>actions.xml</code> and
* <code>browser.actions.xml</code> files; see {@link ActionSet} for syntax
* information.
*
* @see jEdit#getAction(String)
* @see jEdit#getActionNames()
* @see ActionSet
*
* @author Slava Pestov
* @version $Id: BeanShellAction.java 22715 2013-01-25 00:05:02Z daleanson $
*/
public class BeanShellAction extends EditAction
{
//{{{ BeanShellAction constructor
public BeanShellAction(String name, String code, String isSelected,
boolean noRepeat, boolean noRecord, boolean noRememberLast)
{
super(name);
/* Some characters that we like to use in action names
* ('.', '-') are not allowed in BeanShell identifiers. */
String sanitizedName = name.replace('.','_').replace('-','_');
this.code = new CachedBshMethod("action_" + sanitizedName, code);
if (isSelected != null)
{
this.isSelected = new CachedBshMethod("selected_" + sanitizedName, isSelected);
}
this.noRepeat = noRepeat;
this.noRecord = noRecord;
this.noRememberLast = noRememberLast;
jEdit.setTemporaryProperty(name + ".toggle",
isSelected != null ? "true" : "false");
} //}}}
//{{{ invoke() method
public void invoke(View view)
{
try
{
BeanShell.runCachedBlock(code.get(),view,
new NameSpace(BeanShell.getNameSpace(),
"BeanShellAction.invoke()"));
}
catch(Throwable e)
{
Log.log(Log.ERROR,this,e);
new BeanShellErrorDialog(view,e);
}
} //}}}
//{{{ isSelected() method
public boolean isSelected(Component comp)
{
if(isSelected == null)
return false;
NameSpace global = BeanShell.getNameSpace();
try
{
View view = GUIUtilities.getView(comp);
if (view == null)
view = jEdit.getActiveView();
// undocumented hack to allow browser actions to work.
// XXX - clean up in 4.3
global.setVariable("_comp",comp);
return Boolean.TRUE.equals(BeanShell.runCachedBlock(
isSelected.get(),view,
new NameSpace(BeanShell.getNameSpace(),
"BeanShellAction.isSelected()")));
}
catch(Throwable e)
{
Log.log(Log.ERROR,this,e);
// dialogs fuck things up if a menu is visible, etc!
//new BeanShellErrorDialog(view,e);
// so that in the future we don't see streams of
// exceptions
isSelected = null;
return false;
}
finally
{
try
{
global.setVariable("_comp",null);
}
catch(UtilEvalError err)
{
Log.log(Log.ERROR,this,err);
}
}
} //}}}
//{{{ noRepeat() method
public boolean noRepeat()
{
return noRepeat;
} //}}}
//{{{ noRecord() method
public boolean noRecord()
{
return noRecord;
} //}}}
//{{{ noRememberLast() method
/**
* Returns if this edit action should not be remembered as the most
* recently invoked action.
* @since jEdit 4.2pre1
*/
public boolean noRememberLast()
{
return noRememberLast;
} //}}}
//{{{ getCode() method
public String getCode()
{
return code.getSource().trim();
} //}}}
//{{{ Private members
private boolean noRepeat;
private boolean noRecord;
private boolean noRememberLast;
private CachedBshMethod code;
private CachedBshMethod isSelected;
//{{{ CachedBshMethod class
private static class CachedBshMethod
{
private final String name;
private final String source;
private SoftReference<BshMethod> cache;
public CachedBshMethod(String name, String source)
{
this.name = name;
this.source = source;
this.cache = null;
}
public BshMethod get() throws java.lang.Exception
{
if (cache != null)
{
BshMethod cached = cache.get();
if (cached != null)
{
return cached;
}
}
BshMethod newOne = BeanShell.cacheBlock(name, source, true);
cache = new SoftReference<BshMethod>(newOne);
return newOne;
}
public String getSource()
{
return source;
}
}//}}}
//}}}
}