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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.layoutmgr;
-
- /** A position. */
- public class Position {
-
- private LayoutManager layoutManager;
- private int index = -1;
-
- /**
- * Construct a position.
- * @param lm the associated layout manager
- */
- public Position(LayoutManager lm) {
- layoutManager = lm;
- }
-
- /**
- * Construct a position.
- * @param lm the associated layout manager
- * @param index the index
- */
- public Position(LayoutManager lm, int index) {
- this(lm);
- setIndex(index);
- }
- /** @return associated layout manager */
- public LayoutManager getLM() {
- return layoutManager;
- }
-
- /**
- * @param depth the depth at which the LM in this position is found
- * @return associated layout manager
- */
- public LayoutManager getLM(int depth) {
- Position subPos = getPosition(depth);
- if (subPos == null) {
- return null;
- } else {
- return subPos.getLM();
- }
- }
-
- /**
- * Overridden by NonLeafPosition to return the Position of its child LM.
- * @return a position or null
- */
- public Position getPosition() {
- return null;
- }
-
- /**
- * Overridden by NonLeafPosition to return the Position of its child LM.
- * @param depth the depth at which the position in this position is found
- * @return a position or null
- */
- public Position getPosition(int depth) {
- Position subPos = this;
- for (int i = 0; i < depth && subPos != null; ++i, subPos = subPos.getPosition()) {
- // no-op
- }
- return subPos;
- }
-
- /** @return true if generates areas */
- public boolean generatesAreas() {
- return false;
- }
-
- /**
- * Sets the index of this position in the sequence of Position elements.
- *
- * @param value this position's index
- */
- public void setIndex(int value) {
- this.index = value;
- }
-
- /**
- * Returns the index of this position in the sequence of Position elements.
- *
- * @return the index of this position in the sequence of Position elements
- */
- public int getIndex() {
- return this.index;
- }
-
- /** @return short name of associated layout manager */
- protected String getShortLMName() {
- if (getLM() != null) {
- String lm = getLM().toString();
- int idx = lm.lastIndexOf('.');
- if (idx >= 0 && lm.indexOf('@') > 0) {
- return lm.substring(idx + 1);
- } else {
- return lm;
- }
- } else {
- return "null";
- }
- }
-
- /** {@inheritDoc} */
- public String toString() {
- StringBuffer sb = new StringBuffer();
- sb.append("Position:").append(getIndex()).append("(");
- sb.append(getShortLMName());
- sb.append(")");
- return sb.toString();
- }
- }
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