156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson/* 256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Copyright (C) 2010 Google Inc. 356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * 456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Licensed under the Apache License, Version 2.0 (the "License"); 556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * you may not use this file except in compliance with the License. 656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * You may obtain a copy of the License at 756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * 856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * http://www.apache.org/licenses/LICENSE-2.0 956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * 1056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Unless required by applicable law or agreed to in writing, software 1156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * distributed under the License is distributed on an "AS IS" BASIS, 1256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * See the License for the specific language governing permissions and 1456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * limitations under the License. 1556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson */ 1656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 1756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodsonpackage org.clearsilver; 1856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 1956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodsonimport java.io.IOException; 2056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 2156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson/** 2256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Utility class that delegates all methods of an CS object. Made to 2356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * facilitate the transition to CS being an interface and thus not 2456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * extensible in the same way as it was. 2556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * <p> 2656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * This class, and its subclasses must take care to wrap or unwrap HDF and CS 2756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * objects as they are passed through from the callers to the delegate object. 2856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * 2956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson */ 3056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodsonpublic abstract class DelegatedCs implements CS { 3156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson private final CS cs; 3256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 3356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public DelegatedCs(CS cs) { 3456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson // Give it an empty HDF. We aren't going to be using the super object anyways. 3556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson this.cs = cs; 3656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 3756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 3856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public CS getCs() { 3956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson return cs; 4056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 4156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 4256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson /** 4356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Method subclasses are required to override with a method that returns a 4456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * new DelegatedHdf object that wraps the specified HDF object. 4556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * 4656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * @param hdf an HDF object that should be wrapped in a new DelegatedHdf 4756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * object of the same type as this current object. 4856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * @return an object that is a subclass of DelegatedHdf and which wraps the 4956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * given HDF object. 5056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson */ 5156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson protected abstract DelegatedHdf newDelegatedHdf(HDF hdf); 5256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 5356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public void setGlobalHDF(HDF global) { 5456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson if (global != null && global instanceof DelegatedHdf) { 5556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson global = ((DelegatedHdf)global).getHdf(); 5656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 5756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson getCs().setGlobalHDF(global); 5856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 5956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 6056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public HDF getGlobalHDF() { 6156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson HDF hdf = getCs().getGlobalHDF(); 6256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson return hdf != null ? newDelegatedHdf(hdf) : null; 6356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 6456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 6556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public void close() { 6656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson getCs().close(); 6756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 6856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 6956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public void parseFile(String filename) throws IOException { 7056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson getCs().parseFile(filename); 7156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 7256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public void parseStr(String content) { 7356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson getCs().parseStr(content); 7456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 7556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 7656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public String render() { 7756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson return getCs().render(); 7856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 7956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 8056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public CSFileLoader getFileLoader() { 8156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson return getCs().getFileLoader(); 8256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 8356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 8456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public void setFileLoader(CSFileLoader fileLoader) { 8556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson getCs().setFileLoader(fileLoader); 8656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 8756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 8856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson} 89