| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.datatypes; |
| |
| import org.apache.fop.fo.FObj; |
| |
| /** |
| * Class to implement a simple lookup context for a single percent base value. |
| */ |
| public class SimplePercentBaseContext implements PercentBaseContext { |
| |
| private PercentBaseContext parentContext; |
| private int lengthBase; |
| private int lengthBaseValue; |
| |
| /** |
| * @param parentContext the context to be used for all percentages other than lengthBase |
| * @param lengthBase the particular percentage length base for which this context provides |
| * a value |
| * @param lengthBaseValue the value to be returned for requests to the given lengthBase |
| */ |
| public SimplePercentBaseContext(PercentBaseContext parentContext, |
| int lengthBase, |
| int lengthBaseValue) { |
| this.parentContext = parentContext; |
| this.lengthBase = lengthBase; |
| this.lengthBaseValue = lengthBaseValue; |
| } |
| |
| /** |
| * Returns the value for the given lengthBase. |
| * {@inheritDoc} |
| */ |
| public int getBaseLength(int lengthBase, FObj fobj) { |
| // if its for us return our value otherwise delegate to parent context |
| if (lengthBase == this.lengthBase) { |
| return lengthBaseValue; |
| } else if (parentContext != null) { |
| return parentContext.getBaseLength(lengthBase, fobj); |
| } |
| return -1; |
| } |
| |
| } |