01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17:
18: /* $Id$ */
19:
20: package org.apache.fop.fo.expr;
21:
22: import org.apache.fop.apps.FOUserAgent;
23: import org.apache.fop.fo.properties.ColorProperty;
24: import org.apache.fop.fo.properties.Property;
25:
26: /**
27: * Implements the system-color() function.
28: */
29: class SystemColorFunction extends FunctionBase {
30:
31: /** @see org.apache.fop.fo.expr.Function#nbArgs() */
32: public int nbArgs() {
33: return 1;
34: }
35:
36: /** @see org.apache.fop.fo.expr.Function */
37: public Property eval(Property[] args, PropertyInfo pInfo)
38: throws PropertyException {
39: FOUserAgent ua = (pInfo == null) ? null
40: : (pInfo.getFO() == null ? null : pInfo.getFO()
41: .getUserAgent());
42: return new ColorProperty(ua, "system-color(" + args[0] + ")");
43:
44: }
45:
46: }
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