Examples with Paragraph org.apache.pivot.wtk.text.Paragraph used on opensource projects

Example 11 with Paragraph

use of org.apache.pivot.wtk.text.Paragraph in project pivot by apache.

the class TextPane method removeText.

/**
 * Remove the text from the document starting at the given position
 * for the given number of characters.
 * @param offset Starting location to remove text.
 * @param characterCount The number of characters to remove.
 */
public void removeText(int offset, int characterCount) {
    checkDocumentExists();
    if (offset >= 0 && offset < document.getCharacterCount()) {
        Node descendant = document.getDescendantAt(offset);
        // Used to be: if (selectionLength == 0 && ...
        if (characterCount <= 1 && descendant instanceof Paragraph) {
            // We are deleting a paragraph terminator
            Paragraph paragraph = (Paragraph) descendant;
            Element parent = paragraph.getParent();
            int index = parent.indexOf(paragraph);
            // Attempt to merge any successive content into the paragraph
            if (index < parent.getLength() - 1) {
                // TODO This won't always be a paragraph - we'll need to
                // find the next paragraph by walking the tree, then
                // remove any empty nodes
                Sequence<Node> removed = parent.remove(index + 1, 1);
                Paragraph nextParagraph = (Paragraph) removed.get(0);
                paragraph.insertRange(nextParagraph, paragraph.getCharacterCount() - 1);
            }
        } else {
            removeDocumentRange(offset, characterCount);
        }
    }
    // Ensure that the document remains editable
    if (document.getCharacterCount() == 0) {
        document.add(new Paragraph());
    }
    // Move the caret to the removal point
    if (offset >= 0) {
        setSelection(offset, 0);
    }
}