Examples of java.text.BreakIterator.preceding()

java.text.BreakIterator.preceding()
Returns the last boundary preceding the specified character offset. If the specified offset equals to the first text boundary, it returns BreakIterator.DONE and the iterator's current position is unchanged. Otherwise, the iterator's current position is set to the returned boundary. The value returned is always less than the offset or the value BreakIterator.DONE. @param offset the characater offset to begin scanning. @return The last boundary before the specified offset or BreakIterator.DONE if the first text boundary is passed in as the offset. @exception IllegalArgumentException if the specified offset is less thanthe first text boundary or greater than the last text boundary. @since 1.2

        end = it.preceding(index); 
      // Make sure there was a complete unit.  I.e. if index is in the middle
      // of a word, return null if there is no word before that one.
      if (end == -1)
        return null;
      int start = it.preceding(end);
      if (start == -1)
        return text.substring(0, end);
      else
        return text.substring(start, end);
    }

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        }
        else if (p1 + 1 == parent1) {
            // assert(s.count > 1)
            breakPoint = breaker.following(s.offset + s.count - 2);
            if (breakPoint >= s.count + s.offset) {
                breakPoint = breaker.preceding(s.offset + s.count - 1);
            }
        }
        else {
            breakPoint = breaker.preceding(p1 - parent0 + s.offset + 1);
        }

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            if (breakPoint >= s.count + s.offset) {
                breakPoint = breaker.preceding(s.offset + s.count - 1);
            }
        }
        else {
            breakPoint = breaker.preceding(p1 - parent0 + s.offset + 1);
        }


        int retValue = -1;


        if (breakPoint != BreakIterator.DONE) {

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                        char c = text.charAt(lineBreakIndex);
                        if (Character.isWhitespace(c)) {
                            end = breakIterator.following(lineBreakIndex);
                        } else {
                            // Move back to the previous break
                            end = breakIterator.preceding(lineBreakIndex);


                            if (end <= start) {
                                // The whole word doesn't fit in the given space
                                if (breakOnWhitespaceOnly) {
                                    // Move forward to the next break

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                        char c = text.charAt(lineBreakIndex);
                        if (Character.isWhitespace(c)) {
                            end = breakIterator.following(lineBreakIndex);
                        } else {
                            // Move back to the previous break
                            end = breakIterator.preceding(lineBreakIndex);


                            if (end <= start) {
                                // The whole word doesn't fit in the given space
                                if (breakOnWhitespaceOnly) {
                                    // Move forward to the next break

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            return;
        }


        BreakIterator wordBreakIterator = BreakIterator.getWordInstance();
        wordBreakIterator.setText(getText());
        wordBreakIterator.preceding(getCaretPosition());
        wordBreakIterator.previous();


        moveTo(wordBreakIterator.current(), selectionPolicy);
    }

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