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- /*
- * 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.render;
-
- import java.util.Collections;
- import java.util.Map;
-
- import org.apache.fop.apps.FOUserAgent;
-
- /**
- * Abstract base class for RenderingContext implementations.
- */
- public abstract class AbstractRenderingContext implements RenderingContext {
-
- private FOUserAgent userAgent;
- private Map hints;
-
- /**
- * Main constructor.
- * @param userAgent the user agent
- */
- public AbstractRenderingContext(FOUserAgent userAgent) {
- this.userAgent = userAgent;
- }
-
- /**
- * Returns the user agent.
- *
- * @return The user agent
- */
- public FOUserAgent getUserAgent() {
- return userAgent;
- }
-
- /** {@inheritDoc} */
- public void putHints(Map additionalHints) {
- if (additionalHints == null) {
- return;
- }
- if (this.hints == null) {
- this.hints = new java.util.HashMap();
- }
- this.hints.putAll(additionalHints);
- }
-
- /** {@inheritDoc} */
- public void putHint(Object key, Object value) {
- this.hints.put(key, value);
- }
-
- /** {@inheritDoc} */
- public Map getHints() {
- if (this.hints == null) {
- return Collections.EMPTY_MAP;
- } else {
- return Collections.unmodifiableMap(this.hints);
- }
- }
-
- /** {@inheritDoc} */
- public Object getHint(Object key) {
- if (this.hints == null) {
- return null;
- } else {
- return this.hints.get(key);
- }
- }
- }
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