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

Example 1 with Node

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

the class TextPane method paste.

public void paste() {
    if (document == null) {
        setDocument(new Document());
    }
    Manifest clipboardContent = Clipboard.getContent();
    if (clipboardContent != null && clipboardContent.containsText()) {
        // Paste the string representation of the content
        String text = null;
        try {
            // Replace \r\n with just \n and plain \r with \n instead
            // so we can deal with lines uniformly below.
            text = clipboardContent.getText().replace("\r\n", "\n").replace("\r", "\n");
        } catch (IOException exception) {
        // No-op
        }
        if (text != null && text.length() > 0) {
            // Insert the clipboard contents
            int n = 0;
            int start = selectionStart;
            int tabWidth = ((TextPane.Skin) getSkin()).getTabWidth();
            Node currentNode = document.getDescendantAt(start);
            while (!(currentNode instanceof Paragraph)) {
                currentNode = currentNode.getParent();
            }
            int paragraphStartOffset = start - currentNode.getDocumentOffset();
            bulkOperation = true;
            // If there is only a line fragment here, then just insert it
            int eolIndex = text.indexOf('\n');
            if (eolIndex < 0) {
                if (expandTabs) {
                    n = insertWithTabSubstitution(text, start, paragraphStartOffset, tabWidth);
                } else {
                    insertText(text, start);
                    n = text.length();
                }
            } else {
                int textOffset = 0;
                // Insert each line into place, with a new paragraph following
                while (eolIndex >= 0) {
                    String fragment = text.substring(textOffset, eolIndex);
                    int len;
                    if (expandTabs) {
                        len = insertWithTabSubstitution(fragment, start, paragraphStartOffset, tabWidth);
                    } else {
                        insertText(fragment, start);
                        len = fragment.length();
                    }
                    insertParagraph();
                    n += len + 1;
                    start += len + 1;
                    paragraphStartOffset = 0;
                    textOffset = eolIndex + 1;
                    eolIndex = text.indexOf('\n', textOffset);
                }
                // Now deal with any leftover at end of string
                if (textOffset < text.length()) {
                    String lastFragment = text.substring(textOffset);
                    if (expandTabs) {
                        n += insertWithTabSubstitution(lastFragment, start, paragraphStartOffset, tabWidth);
                    } else {
                        insertText(lastFragment, start);
                        n += lastFragment.length();
                    }
                }
            }
            bulkOperation = false;
            textPaneCharacterListeners.charactersInserted(this, start, n);
        }
    }
}

Example 2 with Node

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

the class TextPane method insertParagraph.

public void insertParagraph() {
    checkDocumentExists();
    if (selectionLength > 0) {
        removeDocumentRange(selectionStart, selectionLength);
    }
    // Walk up the tree until we find a paragraph
    Node descendant = document.getDescendantAt(selectionStart);
    while (!(descendant instanceof Paragraph)) {
        descendant = descendant.getParent();
    }
    // Split the paragraph at the insertion point
    Paragraph leadingSegment = (Paragraph) descendant;
    int offset = selectionStart - leadingSegment.getDocumentOffset();
    int characterCount = leadingSegment.getCharacterCount() - offset;
    Paragraph trailingSegment = (Paragraph) leadingSegment.removeRange(offset, characterCount);
    Element parent = leadingSegment.getParent();
    int index = parent.indexOf(leadingSegment);
    parent.insert(trailingSegment, index + 1);
    // Set the selection start to the character following the insertion
    setSelection(selectionStart + 1, selectionLength);
}

Example 3 with Node

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

the class TextPane method addToText.

/**
 * Add the text from the given element (and its children) to the given buffer,
 * respecting the range of characters to be included.
 *
 * @param text The buffer we're building.
 * @param element The current element in the document.
 * @param includeSpan The range of text to be included (in document-relative
 * coordinates).
 */
private void addToText(StringBuilder text, Element element, Span includeSpan) {
    Span elementSpan = element.getDocumentSpan();
    Span elementIntersection = elementSpan.intersect(includeSpan);
    if (elementIntersection != null) {
        for (Node node : element) {
            if (node instanceof Element) {
                addToText(text, (Element) node, includeSpan);
            } else {
                Span nodeSpan = node.getDocumentSpan();
                Span nodeIntersection = nodeSpan.intersect(includeSpan);
                if (nodeIntersection != null) {
                    Span currentSpan = nodeIntersection.offset(-nodeSpan.start);
                    if (node instanceof TextNode) {
                        text.append(((TextNode) node).getCharacters(currentSpan));
                    } else if (node instanceof ComponentNode) {
                        text.append(((ComponentNode) node).getCharacters(currentSpan));
                    }
                // TODO: anything more that could/should be handled?
                // lists for instance???
                }
            }
        }
        if (element instanceof Paragraph && elementIntersection.end == elementSpan.end) {
            // TODO: unclear if this is included in the character count for a paragraph or not
            // or what that means for the intersection range above
            text.append('\n');
        }
    }
}

Example 4 with Node

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

the class TextPaneSkinElementView method attach.

@Override
protected void attach() {
    super.attach();
    Element element = (Element) getNode();
    element.getElementListeners().add(this);
    // Attach child node views
    for (Node node : element) {
        add(createNodeView(getTextPaneSkin(), node));
    }
}

Example 5 with Node

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

the class TextPaneDemo method applyStyle.

private void applyStyle(Document document, Span selectionSpan, StyleApplicator styleApplicator) {
    // I can't apply the styles while iterating over the tree, because I
    // need to update the tree.
    // So first collect a list of all the nodes in the tree.
    List<Node> nodeList = new ArrayList<>();
    collectNodes(document, nodeList);
    final int selectionStart = textPane.getSelectionStart();
    final int selectionLength = textPane.getSelectionLength();
    for (Node node : nodeList) {
        if (node instanceof TextSpan) {
            TextSpan span = (TextSpan) node;
            int documentOffset = node.getDocumentOffset();
            int characterCount = node.getCharacterCount();
            Span textSpan = new Span(documentOffset, documentOffset + characterCount - 1);
            if (selectionSpan.intersects(textSpan)) {
                applyStyleToSpanNode(selectionSpan, styleApplicator, span, characterCount, textSpan);
            }
        }
        if (node instanceof org.apache.pivot.wtk.text.TextNode) {
            org.apache.pivot.wtk.text.TextNode textNode = (org.apache.pivot.wtk.text.TextNode) node;
            int documentOffset = node.getDocumentOffset();
            int characterCount = node.getCharacterCount();
            Span textSpan = new Span(documentOffset, documentOffset + characterCount - 1);
            if (selectionSpan.intersects(textSpan)) {
                applyStyleToTextNode(selectionSpan, styleApplicator, textNode, characterCount, textSpan);
            }
        }
    }
    // maintain the selected range
    textPane.setSelection(selectionStart, selectionLength);
}