Examples with IDOMAttr org.eclipse.wst.xml.core.internal.provisional.document.IDOMAttr used on opensource projects

Example 21 with IDOMAttr

use of org.eclipse.wst.xml.core.internal.provisional.document.IDOMAttr in project webtools.sourceediting by eclipse.

the class DelegatingSourceValidator method computeStartAndEndLocation.

/**
 * Calculates the "better" offsets.
 *
 * @param startOffset -
 *            the offset given by Xerces
 * @param errorMessage -
 *            the Xerces error Message
 * @param selectionStrategy -
 *            the selectionStrategy
 * @param document -
 *            the document
 * @return int[] - position 0 has the start offset of the squiggle range,
 *         position 1 has the endOffset
 */
/*
	 * The way the offsets is calculated is: - find the indexed region
	 * (element) closest to the given offset - if we are between two elements,
	 * choosing left or right element will depend on parameter 'errorSide' -
	 * based on the selectionStrategy choose the underlining strategy (eg
	 * START_TAG means underline the start tag of that element) - use
	 * information from nameOrValue and the DOM to get better offsets
	 * 
	 */
protected int[] computeStartAndEndLocation(int startOffset, String selectionStrategy, String errorSide, String nameOrValue, IDOMDocument document) {
    try {
        int[] startEndPositions = new int[2];
        IndexedRegion region = document.getModel().getIndexedRegion(startOffset);
        IndexedRegion prevRegion = document.getModel().getIndexedRegion(startOffset - 1);
        if (prevRegion != region) {
            // exactly where we need to be.
            if (ERROR_SIDE_LEFT.equals(errorSide)) {
                region = prevRegion;
            }
        }
        // the start of the region where the error was
        if (region != null) {
            startEndPositions[0] = region.getStartOffset();
            startEndPositions[1] = startEndPositions[0];
        } else {
            // this will message will not get added to the IReporter
            // since the length is 0
            startEndPositions[0] = 0;
            startEndPositions[1] = 0;
        }
        if (region instanceof Node) {
            Node node = (Node) region;
            if (START_TAG.equals(selectionStrategy)) {
                // underline the opening tag
                if (node.getNodeType() == Node.ELEMENT_NODE) {
                    IDOMElement element = (IDOMElement) node;
                    startEndPositions[0] = element.getStartOffset() + 1;
                    startEndPositions[1] = startEndPositions[0] + element.getTagName().length();
                }
            } else if (END_TAG.equals(selectionStrategy)) {
                // underline the end tag
                if (node.getNodeType() == Node.ELEMENT_NODE) {
                    IDOMElement element = (IDOMElement) node;
                    startEndPositions[0] = element.getEndStartOffset();
                    startEndPositions[1] = element.getEndOffset();
                }
            } else if (ATTRIBUTE_NAME.equals(selectionStrategy)) {
                // underline the attribute's name
                if (node.getNodeType() == Node.ELEMENT_NODE) {
                    IDOMElement element = (IDOMElement) node;
                    IDOMNode attributeNode = (IDOMNode) (element.getAttributeNode(nameOrValue));
                    if (attributeNode != null) {
                        startEndPositions[0] = attributeNode.getStartOffset();
                        startEndPositions[1] = attributeNode.getStartOffset() + nameOrValue.length();
                    }
                }
            } else if (ATTRIBUTE_VALUE.equals(selectionStrategy)) {
                // underline the attribute's value
                if (node.getNodeType() == Node.ELEMENT_NODE) {
                    IDOMElement element = (IDOMElement) node;
                    IDOMAttr attributeNode = (IDOMAttr) (element.getAttributeNode(nameOrValue));
                    if (attributeNode != null) {
                        startEndPositions[0] = attributeNode.getValueRegionStartOffset();
                        String valueRegionText = attributeNode.getValueRegionText();
                        int valueRegionLength = valueRegionText == null ? 0 : valueRegionText.length();
                        startEndPositions[1] = startEndPositions[0] + valueRegionLength;
                    }
                }
            } else if (ALL_ATTRIBUTES.equals(selectionStrategy)) {
                // underline all attributes
                if (node.getNodeType() == Node.ELEMENT_NODE) {
                    IDOMElement element = (IDOMElement) node;
                    NamedNodeMap attributes = element.getAttributes();
                    if (attributes != null) {
                        IDOMNode first = (IDOMNode) attributes.item(0);
                        IDOMNode last = (IDOMNode) attributes.item(attributes.getLength() - 1);
                        if ((first != null) && (last != null)) {
                            startEndPositions[0] = first.getStartOffset();
                            startEndPositions[1] = last.getEndOffset();
                        }
                    }
                }
            } else if (TEXT.equals(selectionStrategy)) {
                // underline the text between the tags
                if (node.getNodeType() == Node.TEXT_NODE) {
                    IDOMText textNode = (IDOMText) node;
                    int start = textNode.getStartOffset();
                    String value = textNode.getNodeValue();
                    int index = 0;
                    char curChar = value.charAt(index);
                    // whitespace:
                    while ((curChar == '\n') || (curChar == '\t') || (curChar == '\r') || (curChar == ' ')) {
                        curChar = value.charAt(index);
                        index++;
                    }
                    if (index > 0) {
                        index--;
                    }
                    start = start + index;
                    startEndPositions[0] = start;
                    startEndPositions[1] = start + value.trim().length();
                } else if (node.getNodeType() == Node.ELEMENT_NODE) {
                    IDOMElement element = (IDOMElement) node;
                    Node child = element.getFirstChild();
                    if (child instanceof IDOMNode) {
                        IDOMNode xmlChild = ((IDOMNode) child);
                        startEndPositions[0] = xmlChild.getStartOffset();
                        startEndPositions[1] = xmlChild.getEndOffset();
                    }
                }
            } else if (FIRST_NON_WHITESPACE_TEXT.equals(selectionStrategy)) {
                // text node
                if (node.getNodeType() == Node.ELEMENT_NODE) {
                    NodeList nodes = node.getChildNodes();
                    for (int i = 0; i < nodes.getLength(); i++) {
                        Node currentNode = nodes.item(i);
                        if (currentNode.getNodeType() == Node.TEXT_NODE) {
                            // TODO (Trung) I don't think we should call
                            // getNodeValue(), trim(), length()
                            // repeatedly.
                            // This is inefficient, to improve use local
                            // variables to store values.
                            IDOMText textNode = (IDOMText) currentNode;
                            if (textNode.getNodeValue().trim().length() > 0) {
                                String value = textNode.getNodeValue();
                                int index = 0;
                                int start = textNode.getStartOffset();
                                char curChar = value.charAt(index);
                                // skipping over whitespace:
                                while ((curChar == '\n') || (curChar == '\t') || (curChar == '\r') || (curChar == ' ')) {
                                    curChar = value.charAt(index);
                                    index++;
                                }
                                if (index > 0) {
                                    index--;
                                }
                                start = start + index;
                                startEndPositions[0] = start;
                                startEndPositions[1] = start + value.trim().length();
                                break;
                            }
                        }
                    }
                }
            } else if (TEXT_ENTITY_REFERENCE.equals(selectionStrategy)) {
                if (node.getNodeType() == Node.ENTITY_REFERENCE_NODE) {
                    startEndPositions[0] = region.getStartOffset();
                    startEndPositions[1] = region.getEndOffset();
                } else if (node.getNodeType() == Node.ELEMENT_NODE) {
                    /*
						 * In this case the undeclared entity might be in one
						 * of the attribute values. Search through the
						 * attributes to find the range of the undeclared
						 * entity.
						 */
                    // $NON-NLS-1$ //$NON-NLS-2$
                    String entity = "&" + nameOrValue + ";";
                    NamedNodeMap attributes = node.getAttributes();
                    for (int i = 0; i < attributes.getLength(); i++) {
                        IDOMAttr attr = (IDOMAttr) attributes.item(i);
                        String nodeValue = attr.getNodeValue();
                        int index = nodeValue.indexOf(entity);
                        if (index != -1) {
                            startEndPositions[0] = attr.getValueRegionStartOffset() + index + 1;
                            startEndPositions[1] = startEndPositions[0] + entity.length();
                        }
                    }
                }
            } else if (VALUE_OF_ATTRIBUTE_WITH_GIVEN_VALUE.equals(selectionStrategy)) {
                // ATTRIBUTE_VALUE ?
                if (node.getNodeType() == Node.ELEMENT_NODE) {
                    // here we will search through all attributes for the
                    // one with the
                    // with the value we want:
                    // TODO (Trung) I see a potential problem here.
                    // What happens when there is another attribute having
                    // the same value
                    // with this attribute's buggy value ?
                    // Need to solve when time permits.
                    NamedNodeMap attributes = node.getAttributes();
                    for (int i = 0; i < attributes.getLength(); i++) {
                        IDOMAttr attr = (IDOMAttr) attributes.item(i);
                        String nodeValue = attr.getNodeValue().trim();
                        if (nodeValue.equals(nameOrValue)) {
                            startEndPositions[0] = attr.getValueRegionStartOffset() + 1;
                            startEndPositions[1] = startEndPositions[0] + nodeValue.length();
                            break;
                        }
                    }
                }
            } else if (ATTRIBUTE_NAME_LAST.equals(selectionStrategy)) {
                // underline the last attribute's name
                if (node.getNodeType() == Node.ELEMENT_NODE) {
                    NamedNodeMap attributeMap = node.getAttributes();
                    final int length = attributeMap.getLength();
                    Node tempNode = null;
                    Node attrNode = null;
                    for (int i = 0; i < length; i++) {
                        tempNode = attributeMap.item(i);
                        if (tempNode != null && tempNode.getNodeName().equals(nameOrValue)) {
                            attrNode = tempNode;
                        }
                    }
                    IDOMNode attributeNode = (IDOMNode) (attrNode);
                    if (attributeNode != null) {
                        startEndPositions[0] = attributeNode.getStartOffset();
                        startEndPositions[1] = attributeNode.getStartOffset() + nameOrValue.length();
                    }
                }
            }
        }
        return startEndPositions;
    } finally // catch (Exception e) { // e.printStackTrace();
    // }
    {
    }
// return null;
}

Example 22 with IDOMAttr

use of org.eclipse.wst.xml.core.internal.provisional.document.IDOMAttr in project webtools.sourceediting by eclipse.

the class BaseHyperlinkDetector method getHyperlinkRegion.

/**
 * Get the text region corresponding to an IDOMNode.
 *
 * @param node the node for which we want the text region. Must not be null.
 * @return an IRegion for the node, or null if the node is not recognized.
 */
protected IRegion getHyperlinkRegion(IDOMNode node) {
    if (node == null) {
        return null;
    }
    IRegion hyperRegion = null;
    short nodeType = node.getNodeType();
    switch(nodeType) {
        case Node.ELEMENT_NODE:
            {
                hyperRegion = new Region(node.getStartOffset(), node.getEndOffset() - node.getStartOffset());
            }
            break;
        case Node.ATTRIBUTE_NODE:
            {
                IDOMAttr att = (IDOMAttr) node;
                int regOffset = att.getValueRegionStartOffset();
                // ISSUE: We are using a deprecated method here. Is there
                // a better way to get what we need?
                ITextRegion valueRegion = att.getValueRegion();
                if (valueRegion != null) {
                    int regLength = valueRegion.getTextLength();
                    String attValue = att.getValueRegionText();
                    if (StringUtils.isQuoted(attValue)) {
                        regLength = regLength - 2;
                        regOffset++;
                    }
                    hyperRegion = new Region(regOffset, regLength);
                }
            }
            break;
        default:
            // Do nothing.
            break;
    }
    return hyperRegion;
}

Example 23 with IDOMAttr

use of org.eclipse.wst.xml.core.internal.provisional.document.IDOMAttr in project webtools.sourceediting by eclipse.

the class BaseHyperlinkDetector method getAttributeNode.

/**
 * Locates the attribute node under the cursor.
 *
 * @param offset the cursor offset.
 * @param parent the parent node
 * @return an IDOMNode representing the attribute if one is found at the
 *         offset or null otherwise.
 */
protected IDOMNode getAttributeNode(int offset, IDOMNode parent) {
    IDOMAttr attrNode = null;
    NamedNodeMap map = parent.getAttributes();
    for (int index = 0; index < map.getLength(); index++) {
        attrNode = (IDOMAttr) map.item(index);
        boolean located = attrNode.contains(offset);
        if (located) {
            if (attrNode.hasNameOnly()) {
                attrNode = null;
            }
            break;
        }
    }
    if (attrNode == null) {
        return parent;
    }
    return attrNode;
}

Example 24 with IDOMAttr

use of org.eclipse.wst.xml.core.internal.provisional.document.IDOMAttr in project webtools.sourceediting by eclipse.

the class XMLHyperlinkDetector method getHyperlinkRegion.

private IRegion getHyperlinkRegion(Node node) {
    IRegion hyperRegion = null;
    if (node != null) {
        short nodeType = node.getNodeType();
        if (nodeType == Node.DOCUMENT_TYPE_NODE) {
            // handle doc type node
            IDOMNode docNode = (IDOMNode) node;
            hyperRegion = new Region(docNode.getStartOffset(), docNode.getEndOffset() - docNode.getStartOffset());
        } else if (nodeType == Node.ATTRIBUTE_NODE) {
            // handle attribute nodes
            IDOMAttr att = (IDOMAttr) node;
            // do not include quotes in attribute value region
            int regOffset = att.getValueRegionStartOffset();
            ITextRegion valueRegion = att.getValueRegion();
            if (valueRegion != null) {
                int regLength = valueRegion.getTextLength();
                String attValue = att.getValueRegionText();
                if (StringUtils.isQuoted(attValue)) {
                    ++regOffset;
                    regLength = regLength - 2;
                }
                hyperRegion = new Region(regOffset, regLength);
            }
        }
    }
    return hyperRegion;
}

Example 25 with IDOMAttr

use of org.eclipse.wst.xml.core.internal.provisional.document.IDOMAttr in project webtools.sourceediting by eclipse.

the class SelectAttributeContentAssist method adjustXPathStart.

/**
 * This needs to setup the content assistance correctly. Here is what needs
 * to happen: 1. Adjust the matchString (This should have been calculated
 * earlier) 2. Get the current tokens offset position..this will be the
 * starting offset. 3. Get the replacement length...this is the difference
 * between the token offset and the next token or end of the string
 *
 * @param attrName
 *            The name of the attribute to use as the starting node.
 */
protected void adjustXPathStart(String attrName) {
    IDOMElement elem = (IDOMElement) getNode();
    IDOMAttr xpathNode = (IDOMAttr) elem.getAttributeNode(attrName);
    if (xpathNode == null) {
        return;
    }
    String xpathString = xpathNode.getValue();
    if (xpathString.length() == 0) {
        return;
    }
    int startOffset = xpathNode.getValueRegionStartOffset();
    replacementLength = getReplacementBeginPosition() - startOffset;
}