Java Swing Text Format checkBoundaryCondition(final int pos, final Position.Bias b0, final Position.Bias[] biasRet, final Element neighboringElement, final boolean isLTR, final boolean toWest, final int start, final int length, final int startParagraph, final int endParagraph, final boolean nextIsLTR)

Description

check Boundary Condition

License

Apache License

Declaration

private static int checkBoundaryCondition(final int pos, final Position.Bias b0, final Position.Bias[] biasRet,
            final Element neighboringElement, final boolean isLTR, final boolean toWest, final int start,
            final int length, final int startParagraph, final int endParagraph, final boolean nextIsLTR) 

Method Source Code

//package com.java2s;
/*/*from   www  . j  a  v  a2s  . c  o m*/
 *  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.
 */

import javax.swing.text.Element;

import javax.swing.text.Position;

public class Main {
    static final Position.Bias backward = Position.Bias.Backward;
    static final Position.Bias forward = Position.Bias.Forward;

    private static int checkBoundaryCondition(final int pos, final Position.Bias b0, final Position.Bias[] biasRet,
            final Element neighboringElement, final boolean isLTR, final boolean toWest, final int start,
            final int length, final int startParagraph, final int endParagraph, final boolean nextIsLTR) {

        if (toWest && isLTR) {
            if (pos == startParagraph) {
                return Math.max(0, pos - 1);
            } else if (neighboringElement.getStartOffset() == startParagraph && pos == start && b0 == backward) {
                return Math.max(0, startParagraph - 1);
            }
        } else if (!toWest) {
            if (b0 == forward && pos == length) {
                biasRet[0] = b0;
                return pos;
            }
            if (b0 == forward && pos == endParagraph) {
                if (nextIsLTR) {
                    return pos + 1;
                }
                biasRet[0] = backward;
                return neighboringElement.getEndOffset();
            }
        }
        return -1;
    }
}

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