diff options
Diffstat (limited to 'jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/utils/SelectionHelper.java')
| -rw-r--r-- | jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/utils/SelectionHelper.java | 384 |
1 files changed, 0 insertions, 384 deletions
diff --git a/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/utils/SelectionHelper.java b/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/utils/SelectionHelper.java deleted file mode 100644 index ee93b5827..000000000 --- a/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/utils/SelectionHelper.java +++ /dev/null @@ -1,384 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2006 Sybase, Inc. 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: - * Sybase, Inc. - initial API and implementation - *******************************************************************************/ -package org.eclipse.jst.pagedesigner.utils; - -import java.util.ArrayList; -import java.util.List; - -import org.eclipse.gef.EditPart; -import org.eclipse.jface.text.ITextSelection; -import org.eclipse.jface.text.TextSelection; -import org.eclipse.jface.viewers.ISelection; -import org.eclipse.jface.viewers.IStructuredSelection; -import org.eclipse.jface.viewers.StructuredSelection; -import org.eclipse.jst.jsf.core.internal.tld.CMUtil; -import org.eclipse.jst.pagedesigner.dom.DOMPosition; -import org.eclipse.jst.pagedesigner.dom.DOMPositionHelper; -import org.eclipse.jst.pagedesigner.dom.DOMRefPosition; -import org.eclipse.jst.pagedesigner.dom.DOMRefPosition2; -import org.eclipse.jst.pagedesigner.dom.DOMUtil; -import org.eclipse.jst.pagedesigner.dom.EditValidateUtil; -import org.eclipse.jst.pagedesigner.dom.IDOMPosition; -import org.eclipse.jst.pagedesigner.parts.NodeEditPart; -import org.eclipse.jst.pagedesigner.viewer.DesignPosition; -import org.eclipse.jst.pagedesigner.viewer.DesignRange; -import org.eclipse.jst.pagedesigner.viewer.IHTMLGraphicalViewer; -import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel; -import org.eclipse.wst.sse.core.internal.provisional.IndexedRegion; -import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion; -import org.eclipse.wst.xml.core.internal.contentmodel.CMElementDeclaration; -import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel; -import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode; -import org.eclipse.wst.xml.core.internal.regions.DOMRegionContext; -import org.w3c.dom.CharacterData; -import org.w3c.dom.Element; -import org.w3c.dom.Node; -import org.w3c.dom.Text; - -/** - * @author mengbo - * @version 1.5 - */ -public class SelectionHelper { - /** - * convert the text selection to a Node. Will use the start offset of the - * text selection. - * - * @param model - * @param textSel - * @return the node for the text selectin in model or null - */ - public static Node toNode(IStructuredModel model, ITextSelection textSel) { - // FIXME: currently always normalize to a single node. should also - // consider change into DesignRange - // on text selection, find the appropriate Node - Object inode = model.getIndexedRegion(textSel.getOffset()); - if (inode instanceof Node) { - return (Node) inode; - } - return null; - } - - /** - * convert a structured selection of NodeEditPart or Node into the first - * node. - * - * @param selection - * @return the node for the selection or null - */ - public static Node toNode(IStructuredSelection selection) { - if (selection.isEmpty()) { - return null; - } - Object first = selection.getFirstElement(); - if (first instanceof Node) { - return (Node) first; - } else if (first instanceof NodeEditPart) { - return ((NodeEditPart) first).getIDOMNode(); - } else { - return null; - } - } - - /** - * convert a DesignRange into a single node. - * - * @param range - * @return the node for the design range or null - */ - public static Node toNode(DesignRange range) { - if (range.isValid()) { - Node node1 = range.getStartPosition().getContainerNode(); - Node node2 = range.getEndPosition().getContainerNode(); - return DOMUtil.findCommonAncester(node1, node2); - } - return null; - } - - /** - * @param model - * @param region - * if null, then will calculate it using offset. - * @param offset - * offset in source. - * @return a dom position for the region and offset - */ - public static IDOMPosition toDOMPosition(IDOMModel model, - IndexedRegion region, int offset) { - if (region == null) { - region = model.getIndexedRegion(offset); - } - if (region == null && offset > 0) { - // in case this is at end of file. - offset = offset - 1; - region = model.getIndexedRegion(offset); - if (region != null) { - if (region.getEndOffset() >= offset + 1) { - offset += 1; // restore offset. - } - } - } - if (region == null) { - return new DOMPosition(model.getDocument(), 0); - } - IDOMNode node = (IDOMNode) region; - int start = node.getStartOffset(); - if (offset <= start) { - return new DOMRefPosition(node, false); - } - int end = node.getEndOffset(); - if (offset >= end) { - return new DOMRefPosition(node, true); - } - if (node instanceof CharacterData) { - String data = ((CharacterData) node).getData(); - String source = node.getSource(); - if (data.equals(source)) { - return new DOMPosition(node, offset - start); - } - IStructuredDocumentRegion r = node - .getFirstStructuredDocumentRegion(); - int countedData = 0; - // TODO: dead? int offsetInNode = offset - start; - while (r != null) { - if (DOMRegionContext.XML_CHAR_REFERENCE.equals(r.getType()) - || DOMRegionContext.XML_ENTITY_REFERENCE.equals(r - .getType())) { - countedData += 1; // FIXME: what if the entity reference's - // corresponding data is more than 1 - // char? - // where can we get that information? - if (r.getEnd() >= offset) { - return new DOMPosition(node, countedData); - } - } else { - if (r.getEnd() >= offset) { - return new DOMPosition(node, countedData + offset - - r.getStart()); - } - countedData += r.getLength(); - } - r = r.getNext(); - } - return new DOMRefPosition(node, true); - } else if (node instanceof Element) { - CMElementDeclaration cm = CMUtil - .getElementDeclaration((Element) node); - if (cm != null && cm.getContentType() == CMElementDeclaration.EMPTY) { - // this node can't have children. - return new DOMRefPosition(node, true); - } - IStructuredDocumentRegion startRegion = node - .getStartStructuredDocumentRegion(); - if (startRegion == null) { - return new DOMRefPosition(node, true); - } - int startRegionEnd = node.getStartStructuredDocumentRegion() - .getEnd(); - if (offset <= startRegionEnd) { - // it is in the start tag region. So put position at first - // child position. - return new DOMRefPosition2(node, false); - } - return new DOMRefPosition2(node, true); - } else { - return new DOMRefPosition(node, true); - } - // XXX: the implementation in EditModelQuery seemed to be very complex. - // Need revisit that - // and refactor the implementation to this class later. (lium) - } - - /** - * Give a text selection with offset and length, convert it into a Designer - * selection (IStrucuturedSelection of editpart or DesignerRange). If the - * text selection include just a single element node, we'll create a - * IStructuredSelection, otherwise we'll create a DesignerRange. - * - * @param graphicViewer - * @param offset - * @param length - * @return a selection - */ - public static ISelection convertToDesignerSelection( - IHTMLGraphicalViewer graphicViewer, int offset, int length) { - IDOMModel model = graphicViewer.getModel(); - IndexedRegion region1 = model.getIndexedRegion(offset); - IndexedRegion region2 = model.getIndexedRegion(offset + length); - IDOMNode node1 = (IDOMNode) region1; - - if (node1 == null) { - IDOMPosition endOfDoc = new DOMRefPosition2(model.getDocument(), - true); - DesignPosition p = DOMPositionHelper.toDesignPosition(endOfDoc); - return new DesignRange(p, p); - } - - if ((region1 == region2 || node1.getEndOffset() == offset + length) - && !(node1 instanceof Text)) { - // ok, we selected a single node. - EditPart part = (EditPart) node1.getAdapterFor(EditPart.class); - if (part != null) { - return new StructuredSelection(part); - } - } - - // when we reach here, we'll create a DesignerRange - IDOMPosition position1 = toDOMPosition(model, region1, offset); - IDOMPosition position2 = (length == 0 ? position1 : toDOMPosition( - model, region2, offset + length)); - - if (position1 == null || position2 == null) { - return new DesignRange(null, null); - } - DesignPosition p1 = DOMPositionHelper.toDesignPosition(position1); - DesignPosition p2 = (length == 0 ? p1 : DOMPositionHelper - .toDesignPosition(position2)); - if (p1 == null || p2 == null) { - return new DesignRange(null, null); - } - - return new DesignRange(p1, p2); - - } - - /** - * convert a IDOMPosition into index in the source. - * - * @param p - * @return - */ - private static int getIndexedRegionLocation(IDOMPosition p) { - if (!EditValidateUtil.validPosition(p)) { - return 0; - } - - IDOMNode parent = (IDOMNode) p.getContainerNode(); - if (p.isText()) { - String text = ((CharacterData) parent).getData(); - String source = parent.getSource(); - if (text.length() == source.length()) { - // no entity reference. - return parent.getStartOffset() + p.getOffset(); - } - // CR404708. Need to handle entity reference in the text. - int offset = p.getOffset(); - int counted = 0; - IStructuredDocumentRegion r = parent - .getFirstStructuredDocumentRegion(); - while (r != null && counted < offset) { - if (DOMRegionContext.XML_CHAR_REFERENCE.equals(r.getType()) - || DOMRegionContext.XML_ENTITY_REFERENCE.equals(r - .getType())) { - counted++; - if (counted >= offset) { - return r.getEndOffset(); - } - } else { - int length = r.getLength(); - if (counted + length >= offset) { - return r.getStartOffset() + offset - counted; - } - counted += length; - } - r = r.getNext(); - } - return parent.getStartOffset() + p.getOffset(); - } - IDOMNode previous = (IDOMNode) p.getPreviousSiblingNode(); - if (previous != null) { - return previous.getEndOffset(); - } - IDOMNode next = (IDOMNode) p.getNextSiblingNode(); - if (next != null) { - return next.getStartOffset(); - } - IStructuredDocumentRegion r = parent - .getStartStructuredDocumentRegion(); - if (r != null) { - return r.getEnd(); - } - // r == null normally means the parent is the document node. - return parent.getEndOffset(); - } - - /** - * convert design selection of structured selection of NodeEditPart into - * structured selection of Node - * - * @param sel - * @return a structured selectino - */ - public static IStructuredSelection convertFromDesignSelection( - IStructuredSelection sel) { - List list = sel.toList(); - if (list != null) { - List result = new ArrayList(list.size()); - for (int i = 0, size = list.size(); i < size; i++) { - NodeEditPart part = (NodeEditPart) list.get(i); - result.add(part.getIDOMNode()); - } - return new StructuredSelection(result); - } - return new StructuredSelection(); - } - - /** - * - * @param range - * selection from designer, could be IStructuredSelection of - * NodeEditPart, or DesignRange. - * @return a text selection - */ - public static ITextSelection convertFromDesignSelection(DesignRange range) { - if (range.isValid()) { - IDOMPosition start = DOMPositionHelper.toDOMPosition(range - .getStartPosition()); - IDOMPosition end = DOMPositionHelper.toDOMPosition(range - .getEndPosition()); - // We should not encounter invalid position. - if (EditValidateUtil.validPosition(start) - && EditValidateUtil.validPosition(end)) { - int offset = getIndexedRegionLocation(start); - int endoffset = getIndexedRegionLocation(end); - if (offset > endoffset) { - int temp = offset; - offset = endoffset; - endoffset = temp; - } - return new TextSelection(offset, endoffset - offset); - } - } - return new TextSelection(0, 0); - } - - /** - * @param selection - * @return a text selection for the selection or TextSelection(0,0) - * if nothing can be determined - */ - public static ITextSelection convertFromDesignSelectionToTextSelection( - ISelection selection) { - if (selection instanceof IStructuredSelection) { - IStructuredSelection nodes = convertFromDesignSelection((IStructuredSelection) selection); - IDOMNode node = (IDOMNode) nodes.getFirstElement(); - if (node != null && node.getNodeType() != Node.DOCUMENT_NODE) { - return new TextSelection(node.getStartOffset(), node - .getEndOffset() - - node.getStartOffset()); - } - } else if (selection instanceof DesignRange) { - return convertFromDesignSelection((DesignRange) selection); - } - return new TextSelection(0, 0); - } -} |