/* * Copyright (C) 2007-2008 Helge Hess * * This file is part of JOPE. * * JOPE is free software; you can redistribute it and/or modify it under the * terms of the GNU Lesser General Public License as published by the Free * Software Foundation; either version 2, or (at your option) any later version. * * JOPE 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 Lesser General Public License for more * details. * * You should have received a copy of the GNU Lesser General Public License * along with JOPE; see the file COPYING. If not, write to the Free Software * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ package org.opengroupware.jope.jsapp.adapter; import java.util.Map; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.mozilla.javascript.Context; import org.mozilla.javascript.NativeJavaObject; import org.mozilla.javascript.Scriptable; import org.mozilla.javascript.Undefined; /** * Wrap a java.util.Map object in JavaScript. The basic idea is that *all* * JavaScript slots are stored in extra-vars of the Map. * This includes functions and all 'var's of a script compiled against this * 'scope'. *

* Its inspired by the NativeMapAdapter. */ public class JSMapAdapter extends NativeJavaObject { // Note: 'implements Wrapper' (aka call 'unwrap()' to unwrap) private static final long serialVersionUID = 1L; protected static final Log log = LogFactory.getLog("JSBridge"); public JSMapAdapter() { } public JSMapAdapter(Scriptable _scope, Object _javaObject, Class _type){ super(_scope, _javaObject, _type); } public JSMapAdapter (Scriptable _scope, Object _javaObject, Class _type, boolean _isAdapter) { super(_scope, _javaObject, _type, _isAdapter); } /* slots */ @Override public boolean has(final String _name, final Scriptable _start) { /* Note: Its important to implement that. Rhino issues this when checking * for a property (just having 'get' is insufficient). */ if (log != null && log.isDebugEnabled()) log.debug("ADAPTOR HAS?: " + _name + " from " + this.javaObject); System.err.println("HAS: " + _name + ": " + this.javaObject); if (((Map)this.javaObject).containsKey(_name)) return true; return super.has(_name, _start); } @Override public boolean has(final int _idx, final Scriptable _start) { if (((Map)this.javaObject).containsKey(new Integer(_idx))) return true; return super.has(_idx, _start); } /** * Get the value of a property. First check the superclass for methods of the * Java class (will be returned as Callables), then check for WOComponent * extra variables. *

* The values that may be returned are limited to the following: *

*/ @Override public Object get(final String _name, final Scriptable _start) { final Map map = (Map)this.javaObject; if (map == null || !map.containsKey(_name)) return super.get(_name, _start); final Object value = map.get(_name); if (log != null && log.isDebugEnabled()) { log.debug("ADAPTOR GET '" + _name + "': " + value + "\n from " + this.javaObject); } if (value instanceof Scriptable || value instanceof String || value instanceof Number || value instanceof Boolean) { /* Note: the WrapFactory somehow doesn't convert basetypes properly */ return value; // return JS stuff as-is! } Context cx = Context.getCurrentContext(); return cx.getWrapFactory().wrap(cx, this /* scope? */, value /* Java object to be wrapped for JS */, null /* static type? */); } @Override public Object get(final int _idx, final Scriptable _start) { final Map map = (Map)this.javaObject; final Object key = new Integer(_idx); if (map == null || !map.containsKey(key)) return super.get(_idx, _start); Object value = map.get(key); if (log != null && log.isDebugEnabled()) { log.debug("ADAPTOR GET [" + _idx + "]: " + value + "\n from " + this.javaObject); } if (value instanceof Scriptable || value instanceof String || value instanceof Number || value instanceof Boolean) { /* Note: the WrapFactory somehow doesn't convert basetypes properly */ return value; // return JS stuff as-is! } Context cx = Context.getCurrentContext(); return cx.getWrapFactory().wrap(cx, this /* scope? */, value /* Java object to be wrapped for JS */, null /* static type? */); } @Override public Object[] getIds() { // hm, return all IDs, our JOPE API does not support that. We would need to // merge with super? //return ((Map)this.javaObject).keySet().toArray(); if (log != null && log.isDebugEnabled()) log.error("GETIDS on " + this.javaObject); return super.getIds(); } @SuppressWarnings("unchecked") @Override public void put(final String _name, final Scriptable _start, Object _value) { try { // hm, here we get Undefined! Object v; if (_value instanceof Undefined) { /* We keep 'Undefined' (we could map to NSNull?). Undefined is pushed * when the script does 'var a'. Note that the assignment (var a = 5) * is performed later (after checking has('a')!). */ v = _value; } else { // TBD: should we convert numbers and such? v = Context.jsToJava(_value, Object.class); } if (log != null && log.isDebugEnabled()) { log.debug("ADAPTOR PUT: " + _name + " = " + _value + " (" + v + ") " + " on " + this.javaObject); } ((Map)this.javaObject).put(_name, v); } catch(RuntimeException e) { Context.throwAsScriptRuntimeEx(e); } } @SuppressWarnings("unchecked") @Override public void put(final int _idx, final Scriptable _start, Object _value) { final Object key = new Integer(_idx); try { // hm, here we get Undefined! Object v; if (_value instanceof Undefined) { /* We keep 'Undefined' (we could map to NSNull?). Undefined is pushed * when the script does 'var a'. Note that the assignment (var a = 5) * is performed later (after checking has('a')!). */ v = _value; } else { // TBD: should we convert numbers and such? v = Context.jsToJava(_value, Object.class); } if (log != null && log.isDebugEnabled()) { log.debug("ADAPTOR PUT: [" + _idx + "] = " + _value + " (" + v + ") " + " on " + this.javaObject); } ((Map)this.javaObject).put(key, v); } catch(RuntimeException e) { Context.throwAsScriptRuntimeEx(e); } } @Override public void delete(final String _name) { try { ((Map)this.javaObject).remove(_name); } catch (RuntimeException e) { Context.throwAsScriptRuntimeEx(e); } } @Override public void delete(final int _idx) { try { ((Map)this.javaObject).remove(new Integer(_idx)); } catch (RuntimeException e) { Context.throwAsScriptRuntimeEx(e); } } /* description */ @Override public String toString() { return this.javaObject != null ? this.javaObject.toString() : ""; } }