Example usage for org.w3c.dom Node compareDocumentPosition

Introduction

In this page you can find the example usage for org.w3c.dom Node compareDocumentPosition.

Prototype

public short compareDocumentPosition(Node other) throws DOMException;

Source Link

Document

Compares the reference node, i.e.

Usage

From source file:com.gargoylesoftware.htmlunit.javascript.host.dom.TextRange.java

/**
 * Indicates if a range is contained in current one.
 * @param other the other range//  w w w . j a v a2 s .com
 * @return {@code true} if <code>other</code> is contained within current range
 * @see <a href="http://msdn.microsoft.com/en-us/library/ms536371.aspx">MSDN doc</a>
 */
@JsxFunction
public boolean inRange(final TextRange other) {
    final Range otherRange = other.range_;

    final org.w3c.dom.Node start = range_.getStartContainer();
    final org.w3c.dom.Node otherStart = otherRange.getStartContainer();
    if (otherStart == null) {
        return false;
    }
    final short startComparison = start.compareDocumentPosition(otherStart);
    final boolean startNodeBefore = startComparison == 0
            || (startComparison & Node.DOCUMENT_POSITION_CONTAINS) != 0
            || (startComparison & Node.DOCUMENT_POSITION_PRECEDING) != 0;
    if (startNodeBefore && (start != otherStart || range_.getStartOffset() <= otherRange.getStartOffset())) {
        final org.w3c.dom.Node end = range_.getEndContainer();
        final org.w3c.dom.Node otherEnd = otherRange.getEndContainer();
        final short endComparison = end.compareDocumentPosition(otherEnd);
        final boolean endNodeAfter = endComparison == 0
                || (endComparison & Node.DOCUMENT_POSITION_CONTAINS) != 0
                || (endComparison & Node.DOCUMENT_POSITION_FOLLOWING) != 0;
        if (endNodeAfter && (end != otherEnd || range_.getEndOffset() >= otherRange.getEndOffset())) {
            return true;
        }
    }

    return false;
}

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From source file:com.gargoylesoftware.htmlunit.javascript.host.dom.TextRange.java

/**
 * Compares an end point of a TextRange object with an end point of another range.
 * @param how how to compare/*from   w w w.  j av  a2s .  c  o m*/
 * @param sourceRange the other range
 * @return the result
 */
@JsxFunction
public int compareEndPoints(final String how, final TextRange sourceRange) {
    final org.w3c.dom.Node start;
    final org.w3c.dom.Node otherStart;
    switch (how) {
    case "StartToEnd":
        start = range_.getStartContainer();
        otherStart = sourceRange.range_.getEndContainer();
        break;

    case "StartToStart":
        start = range_.getStartContainer();
        otherStart = sourceRange.range_.getStartContainer();
        break;

    case "EndToStart":
        start = range_.getEndContainer();
        otherStart = sourceRange.range_.getStartContainer();
        break;

    default:
        start = range_.getEndContainer();
        otherStart = sourceRange.range_.getEndContainer();
        break;
    }
    if (start == null || otherStart == null) {
        return 0;
    }
    return start.compareDocumentPosition(otherStart);
}

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