| /******************************************************************************* |
| * Copyright (c) 2001, 2005 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Jens Lukowski/Innoopract - initial renaming/restructuring |
| * |
| *******************************************************************************/ |
| package org.eclipse.wst.xml.core.internal.document; |
| |
| |
| |
| import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode; |
| import org.w3c.dom.DOMException; |
| import org.w3c.dom.DocumentFragment; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| import org.w3c.dom.Text; |
| import org.w3c.dom.ranges.Range; |
| import org.w3c.dom.ranges.RangeException; |
| |
| |
| /** |
| */ |
| public class RangeImpl implements Range { |
| private Node endContainer = null; |
| private int endOffset = 0; |
| |
| private Node startContainer = null; |
| private int startOffset = 0; |
| |
| /** |
| */ |
| protected RangeImpl() { |
| super(); |
| } |
| |
| /** |
| */ |
| protected RangeImpl(RangeImpl that) { |
| super(); |
| |
| if (that != null) { |
| this.startContainer = that.startContainer; |
| this.startOffset = that.startOffset; |
| this.endContainer = that.endContainer; |
| this.endOffset = that.endOffset; |
| } |
| } |
| |
| /** |
| * Duplicates the contents of a Range |
| * |
| * @return A DocumentFragment that contains content equivalent to this |
| * Range. |
| * @exception DOMException |
| * HIERARCHY_REQUEST_ERR: Raised if a DocumentType node |
| * would be extracted into the new DocumentFragment. <br> |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public DocumentFragment cloneContents() throws DOMException { |
| // not supported |
| return null; |
| } |
| |
| /** |
| * Produces a new Range whose boundary-points are equal to the |
| * boundary-points of the Range. |
| * |
| * @return The duplicated Range. |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public Range cloneRange() throws DOMException { |
| return new RangeImpl(this); |
| } |
| |
| /** |
| * Collapse a Range onto one of its boundary-points |
| * |
| * @param toStartIf |
| * TRUE, collapses the Range onto its start; if FALSE, |
| * collapses it onto its end. |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public void collapse(boolean toStart) throws DOMException { |
| if (toStart) { |
| this.endContainer = this.startContainer; |
| this.endOffset = this.startOffset; |
| } else { |
| this.startContainer = this.endContainer; |
| this.startOffset = this.endOffset; |
| } |
| } |
| |
| /** |
| * Compare the boundary-points of two Ranges in a document. |
| * |
| * @param howA |
| * code representing the type of comparison, as defined above. |
| * @param sourceRangeThe |
| * <code>Range</code> on which this current |
| * <code>Range</code> is compared to. |
| * @return -1, 0 or 1 depending on whether the corresponding |
| * boundary-point of the Range is respectively before, equal to, |
| * or after the corresponding boundary-point of |
| * <code>sourceRange</code>. |
| * @exception DOMException |
| * WRONG_DOCUMENT_ERR: Raised if the two Ranges are not in |
| * the same Document or DocumentFragment. <br> |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public short compareBoundaryPoints(short how, Range sourceRange) throws DOMException { |
| if (sourceRange == null) |
| return (short) 0; // error |
| |
| Node container1 = null; |
| int offset1 = 0; |
| Node container2 = null; |
| int offset2 = 0; |
| |
| switch (how) { |
| case START_TO_START : |
| container1 = this.startContainer; |
| offset1 = this.startOffset; |
| container2 = sourceRange.getStartContainer(); |
| offset2 = sourceRange.getStartOffset(); |
| break; |
| case START_TO_END : |
| container1 = this.startContainer; |
| offset1 = this.startOffset; |
| container2 = sourceRange.getEndContainer(); |
| offset2 = sourceRange.getEndOffset(); |
| break; |
| case END_TO_END : |
| container1 = this.endContainer; |
| offset1 = this.endOffset; |
| container2 = sourceRange.getEndContainer(); |
| offset2 = sourceRange.getEndOffset(); |
| break; |
| case END_TO_START : |
| container1 = this.endContainer; |
| offset1 = this.endOffset; |
| container2 = sourceRange.getStartContainer(); |
| offset2 = sourceRange.getStartOffset(); |
| break; |
| default : |
| return (short) 0; // error |
| } |
| |
| return comparePoints(container1, offset1, container2, offset2); |
| } |
| |
| /* |
| */ |
| protected short comparePoints(Node container1, int offset1, Node container2, int offset2) { |
| if (container1 == null || container2 == null) |
| return (short) 0; // error |
| |
| if (container1 == container2) { |
| if (offset1 > offset2) |
| return (short) 1; |
| if (offset1 < offset2) |
| return (short) -1; |
| return 0; |
| } |
| |
| // get node offsets |
| IDOMNode node1 = null; |
| if (container1.hasChildNodes()) { |
| Node child = container1.getFirstChild(); |
| for (int i = 0; i < offset1; i++) { |
| Node next = child.getNextSibling(); |
| if (next == null) |
| break; |
| child = next; |
| } |
| node1 = (IDOMNode) child; |
| offset1 = 0; |
| } else { |
| node1 = (IDOMNode) container1; |
| } |
| int nodeOffset1 = node1.getStartOffset(); |
| IDOMNode node2 = null; |
| if (container2.hasChildNodes()) { |
| Node child = container2.getFirstChild(); |
| for (int i = 0; i < offset2; i++) { |
| Node next = child.getNextSibling(); |
| if (next == null) |
| break; |
| child = next; |
| } |
| node2 = (IDOMNode) child; |
| offset2 = 0; |
| } else { |
| node2 = (IDOMNode) container1; |
| } |
| int nodeOffset2 = node2.getStartOffset(); |
| |
| if (nodeOffset1 > nodeOffset2) |
| return (short) 1; |
| if (nodeOffset1 < nodeOffset2) |
| return (short) -1; |
| if (offset1 > offset2) |
| return (short) 1; |
| if (offset1 < offset2) |
| return (short) -1; |
| return (short) 0; |
| } |
| |
| /** |
| * Removes the contents of a Range from the containing document or |
| * document fragment without returning a reference to the removed content. |
| * |
| * @exception DOMException |
| * NO_MODIFICATION_ALLOWED_ERR: Raised if any portion of |
| * the content of the Range is read-only or any of the |
| * nodes that contain any of the content of the Range are |
| * read-only. <br> |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public void deleteContents() throws DOMException { |
| // not supported |
| } |
| |
| /** |
| * Called to indicate that the Range is no longer in use and that the |
| * implementation may relinquish any resources associated with this Range. |
| * Subsequent calls to any methods or attribute getters on this Range will |
| * result in a <code>DOMException</code> being thrown with an error code |
| * of <code>INVALID_STATE_ERR</code>. |
| * |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public void detach() throws DOMException { |
| this.startContainer = null; |
| this.startOffset = 0; |
| this.endContainer = null; |
| this.endOffset = 0; |
| } |
| |
| /** |
| * Moves the contents of a Range from the containing document or document |
| * fragment to a new DocumentFragment. |
| * |
| * @return A DocumentFragment containing the extracted contents. |
| * @exception DOMException |
| * NO_MODIFICATION_ALLOWED_ERR: Raised if any portion of |
| * the content of the Range is read-only or any of the |
| * nodes which contain any of the content of the Range are |
| * read-only. <br> |
| * HIERARCHY_REQUEST_ERR: Raised if a DocumentType node |
| * would be extracted into the new DocumentFragment. <br> |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public DocumentFragment extractContents() throws DOMException { |
| // not supported |
| return null; |
| } |
| |
| /** |
| * TRUE if the Range is collapsed |
| * |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public boolean getCollapsed() throws DOMException { |
| if (this.startContainer == this.endContainer && this.startOffset == this.endOffset) |
| return true; |
| return false; |
| } |
| |
| /** |
| * The deepest common ancestor container of the Range's two |
| * boundary-points. |
| * |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public Node getCommonAncestorContainer() throws DOMException { |
| if (this.startContainer == null) |
| return null; |
| return ((NodeImpl) this.startContainer).getCommonAncestor(this.endContainer); |
| } |
| |
| /** |
| * Node within which the Range ends |
| * |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public Node getEndContainer() throws DOMException { |
| return this.endContainer; |
| } |
| |
| /** |
| * Offset within the ending node of the Range. |
| * |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public int getEndOffset() throws DOMException { |
| return this.endOffset; |
| } |
| |
| /** |
| * Node within which the Range begins |
| * |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public Node getStartContainer() throws DOMException { |
| return this.startContainer; |
| } |
| |
| /** |
| * Offset within the starting node of the Range. |
| * |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public int getStartOffset() throws DOMException { |
| return this.startOffset; |
| } |
| |
| /** |
| * Inserts a node into the Document or DocumentFragment at the start of |
| * the Range. If the container is a Text node, this will be split at the |
| * start of the Range (as if the Text node's splitText method was |
| * performed at the insertion point) and the insertion will occur between |
| * the two resulting Text nodes. Adjacent Text nodes will not be |
| * automatically merged. If the node to be inserted is a DocumentFragment |
| * node, the children will be inserted rather than the DocumentFragment |
| * node itself. |
| * |
| * @param newNodeThe |
| * node to insert at the start of the Range |
| * @exception DOMException |
| * NO_MODIFICATION_ALLOWED_ERR: Raised if an ancestor |
| * container of the start of the Range is read-only. <br> |
| * WRONG_DOCUMENT_ERR: Raised if <code>newNode</code> and |
| * the container of the start of the Range were not created |
| * from the same document. <br> |
| * HIERARCHY_REQUEST_ERR: Raised if the container of the |
| * start of the Range is of a type that does not allow |
| * children of the type of <code>newNode</code> or if |
| * <code>newNode</code> is an ancestor of the container. |
| * <br> |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| * @exception RangeException |
| * INVALID_NODE_TYPE_ERR: Raised if <code>newNode</code> |
| * is an Attr, Entity, Notation, or Document node. |
| */ |
| public void insertNode(Node newNode) throws RangeException, DOMException { |
| // not supported |
| } |
| |
| /** |
| * Select a node and its contents |
| * |
| * @param refNodeThe |
| * node to select. |
| * @exception RangeException |
| * INVALID_NODE_TYPE_ERR: Raised if an ancestor of |
| * <code>refNode</code> is an Entity, Notation or |
| * DocumentType node or if <code>refNode</code> is a |
| * Document, DocumentFragment, Attr, Entity, or Notation |
| * node. |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public void selectNode(Node refNode) throws RangeException, DOMException { |
| if (refNode == null) |
| return; |
| Node parent = refNode.getParentNode(); |
| if (parent == null) |
| return; |
| int index = ((NodeImpl) refNode).getIndex(); |
| if (index < 0) |
| return; |
| setStart(parent, index); |
| setEnd(parent, index + 1); |
| } |
| |
| /** |
| * Select the contents within a node |
| * |
| * @param refNodeNode |
| * to select from |
| * @exception RangeException |
| * INVALID_NODE_TYPE_ERR: Raised if <code>refNode</code> |
| * or an ancestor of <code>refNode</code> is an Entity, |
| * Notation or DocumentType node. |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public void selectNodeContents(Node refNode) throws RangeException, DOMException { |
| if (refNode == null) |
| return; |
| if (refNode.getNodeType() == Node.TEXT_NODE) { |
| Text text = (Text) refNode; |
| setStart(refNode, 0); |
| setEnd(refNode, text.getLength()); |
| } else { |
| NodeList childNodes = refNode.getChildNodes(); |
| int length = (childNodes != null ? childNodes.getLength() : 0); |
| setStart(refNode, 0); |
| setEnd(refNode, length); |
| } |
| } |
| |
| /** |
| * Sets the attributes describing the end of a Range. |
| * |
| * @param refNodeThe |
| * <code>refNode</code> value. This parameter must be |
| * different from <code>null</code>. |
| * @param offsetThe |
| * <code>endOffset</code> value. |
| * @exception RangeException |
| * INVALID_NODE_TYPE_ERR: Raised if <code>refNode</code> |
| * or an ancestor of <code>refNode</code> is an Entity, |
| * Notation, or DocumentType node. |
| * @exception DOMException |
| * INDEX_SIZE_ERR: Raised if <code>offset</code> is |
| * negative or greater than the number of child units in |
| * <code>refNode</code>. Child units are 16-bit units if |
| * <code>refNode</code> is a type of CharacterData node |
| * (e.g., a Text or Comment node) or a |
| * ProcessingInstruction node. Child units are Nodes in all |
| * other cases. <br> |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public void setEnd(Node refNode, int offset) throws RangeException, DOMException { |
| this.endContainer = refNode; |
| this.endOffset = offset; |
| } |
| |
| /** |
| * Sets the end of a Range to be after a node |
| * |
| * @param refNodeRange |
| * ends after <code>refNode</code>. |
| * @exception RangeException |
| * INVALID_NODE_TYPE_ERR: Raised if the root container of |
| * <code>refNode</code> is not an Attr, Document or |
| * DocumentFragment node or if <code>refNode</code> is a |
| * Document, DocumentFragment, Attr, Entity, or Notation |
| * node. |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public void setEndAfter(Node refNode) throws RangeException, DOMException { |
| if (refNode == null) |
| return; |
| Node parent = refNode.getParentNode(); |
| if (parent == null) |
| return; |
| int index = ((NodeImpl) refNode).getIndex(); |
| if (index < 0) |
| return; |
| setEnd(parent, index + 1); |
| } |
| |
| /** |
| * Sets the end position to be before a node. |
| * |
| * @param refNodeRange |
| * ends before <code>refNode</code> |
| * @exception RangeException |
| * INVALID_NODE_TYPE_ERR: Raised if the root container of |
| * <code>refNode</code> is not an Attr, Document, or |
| * DocumentFragment node or if <code>refNode</code> is a |
| * Document, DocumentFragment, Attr, Entity, or Notation |
| * node. |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public void setEndBefore(Node refNode) throws RangeException, DOMException { |
| if (refNode == null) |
| return; |
| Node parent = refNode.getParentNode(); |
| if (parent == null) |
| return; |
| int index = ((NodeImpl) refNode).getIndex(); |
| if (index < 0) |
| return; |
| setEnd(parent, index); |
| } |
| |
| /** |
| * Sets the attributes describing the start of the Range. |
| * |
| * @param refNodeThe |
| * <code>refNode</code> value. This parameter must be |
| * different from <code>null</code>. |
| * @param offsetThe |
| * <code>startOffset</code> value. |
| * @exception RangeException |
| * INVALID_NODE_TYPE_ERR: Raised if <code>refNode</code> |
| * or an ancestor of <code>refNode</code> is an Entity, |
| * Notation, or DocumentType node. |
| * @exception DOMException |
| * INDEX_SIZE_ERR: Raised if <code>offset</code> is |
| * negative or greater than the number of child units in |
| * <code>refNode</code>. Child units are 16-bit units if |
| * <code>refNode</code> is a type of CharacterData node |
| * (e.g., a Text or Comment node) or a |
| * ProcessingInstruction node. Child units are Nodes in all |
| * other cases. <br> |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public void setStart(Node refNode, int offset) throws RangeException, DOMException { |
| this.startContainer = refNode; |
| this.startOffset = offset; |
| } |
| |
| /** |
| * Sets the start position to be after a node |
| * |
| * @param refNodeRange |
| * starts after <code>refNode</code> |
| * @exception RangeException |
| * INVALID_NODE_TYPE_ERR: Raised if the root container of |
| * <code>refNode</code> is not an Attr, Document, or |
| * DocumentFragment node or if <code>refNode</code> is a |
| * Document, DocumentFragment, Attr, Entity, or Notation |
| * node. |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public void setStartAfter(Node refNode) throws RangeException, DOMException { |
| if (refNode == null) |
| return; |
| Node parent = refNode.getParentNode(); |
| if (parent == null) |
| return; |
| int index = ((NodeImpl) refNode).getIndex(); |
| if (index < 0) |
| return; |
| setStart(parent, index + 1); |
| } |
| |
| /** |
| * Sets the start position to be before a node |
| * |
| * @param refNodeRange |
| * starts before <code>refNode</code> |
| * @exception RangeException |
| * INVALID_NODE_TYPE_ERR: Raised if the root container of |
| * <code>refNode</code> is not an Attr, Document, or |
| * DocumentFragment node or if <code>refNode</code> is a |
| * Document, DocumentFragment, Attr, Entity, or Notation |
| * node. |
| * @exception DOMException |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| */ |
| public void setStartBefore(Node refNode) throws RangeException, DOMException { |
| if (refNode == null) |
| return; |
| Node parent = refNode.getParentNode(); |
| if (parent == null) |
| return; |
| int index = ((NodeImpl) refNode).getIndex(); |
| if (index < 0) |
| return; |
| setStart(parent, index); |
| } |
| |
| /** |
| * Reparents the contents of the Range to the given node and inserts the |
| * node at the position of the start of the Range. |
| * |
| * @param newParentThe |
| * node to surround the contents with. |
| * @exception DOMException |
| * NO_MODIFICATION_ALLOWED_ERR: Raised if an ancestor |
| * container of either boundary-point of the Range is |
| * read-only. <br> |
| * WRONG_DOCUMENT_ERR: Raised if <code> newParent</code> |
| * and the container of the start of the Range were not |
| * created from the same document. <br> |
| * HIERARCHY_REQUEST_ERR: Raised if the container of the |
| * start of the Range is of a type that does not allow |
| * children of the type of <code>newParent</code> or if |
| * <code>newParent</code> is an ancestor of the container |
| * or if <code>node</code> would end up with a child node |
| * of a type not allowed by the type of <code>node</code>. |
| * <br> |
| * INVALID_STATE_ERR: Raised if <code>detach()</code> has |
| * already been invoked on this object. |
| * @exception RangeException |
| * BAD_BOUNDARYPOINTS_ERR: Raised if the Range partially |
| * selects a non-text node. <br> |
| * INVALID_NODE_TYPE_ERR: Raised if <code> node</code> is |
| * an Attr, Entity, DocumentType, Notation, Document, or |
| * DocumentFragment node. |
| */ |
| public void surroundContents(Node newParent) throws RangeException, DOMException { |
| // not supported |
| } |
| } |
