diff options
Diffstat (limited to 'jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/dom/DOMPositionHelper.java')
| -rw-r--r-- | jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/dom/DOMPositionHelper.java | 395 |
1 files changed, 0 insertions, 395 deletions
diff --git a/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/dom/DOMPositionHelper.java b/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/dom/DOMPositionHelper.java deleted file mode 100644 index d0e77f82b..000000000 --- a/jsf/plugins/org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/dom/DOMPositionHelper.java +++ /dev/null @@ -1,395 +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.dom; - -import java.util.List; - -import org.eclipse.core.runtime.Assert; -import org.eclipse.gef.EditPart; -import org.eclipse.jst.pagedesigner.parts.NodeEditPart; -import org.eclipse.jst.pagedesigner.parts.TextEditPart; -import org.eclipse.jst.pagedesigner.utils.HTMLUtil; -import org.eclipse.jst.pagedesigner.viewer.DesignPosition; -import org.eclipse.jst.pagedesigner.viewer.DesignRefPosition; -import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode; -import org.w3c.dom.Node; -import org.w3c.dom.Text; - -/** - * @author mengbo - */ -public class DOMPositionHelper { - /** - * @param position - * @return the design position - */ - public static DesignPosition toDesignRefPosition(DOMRefPosition position) { - Node node = position.getReferenceNode(); - do { - IDOMNode container = (IDOMNode) node.getParentNode(); - EditPart part = (EditPart) container.getAdapterFor(EditPart.class); - if (part != null) { - // XXX: what if the node has not corresponding part? - EditPart child = DOMPositionHelper.findEditPart(part, node); - if (child != null) { - return new DesignRefPosition(child, position.isForward()); - } - return DesignPosition.INVALID; - } - node = node.getParentNode(); - } while (true); - } - - /** - * - * @param position - * if it is null, then will return null - * @return null if position is null or invalid. - */ - public static DesignPosition toDesignPosition(IDOMPosition position) { - if (position == null) { - return null; - } - if (position instanceof DOMRefPosition) { - return toDesignRefPosition((DOMRefPosition) position); - } - do { - IDOMNode container = (IDOMNode) position.getContainerNode(); - EditPart part = (EditPart) container.getAdapterFor(EditPart.class); - if (part != null) { - if (container instanceof Text) { - String textData = ((Text) container).getData(); - String displayData = ((TextEditPart) part).getTextData(); - return new DesignPosition(part, - textDataOffsetToDisplayOffset(textData, - displayData, position.getOffset())); - } - Node pre = position.getPreviousSiblingNode(); - while (pre != null) { - int index = findChildEditPartIndex(part, pre); - if (index != -1) { - return new DesignPosition(part, index + 1); - } - pre = pre.getPreviousSibling(); - } - return new DesignPosition(part, 0); - } - position = new DOMRefPosition(position.getContainerNode(), - false); - } while (true); - } - - /** - * Here is the position is not currect, currently it will returns invalid - * pos. - * - * @param position - * @return the design position - */ - public static DesignPosition toDesignPosition1(IDOMPosition position) { - if (position instanceof DOMRefPosition) { - return toDesignRefPosition((DOMRefPosition) position); - } - do { - IDOMNode container = (IDOMNode) position.getContainerNode(); - EditPart part = (EditPart) container.getAdapterFor(EditPart.class); - if (part != null) { - if (container instanceof Text) { - String textData = ((Text) container).getData(); - String displayData = ((TextEditPart) part).getTextData(); - return new DesignPosition(part, - textDataOffsetToDisplayOffset(textData, - displayData, position.getOffset())); - } - Node pre = position.getPreviousSiblingNode(); - while (pre != null) { - int index = findChildEditPartIndex(part, pre); - if (index != -1) { - return new DesignPosition(part, index + 1); - } - pre = pre.getPreviousSibling(); - } - return new DesignPosition(part, 0); - } - return DesignPosition.INVALID; - } while (true); - } - - static int findChildEditPartIndex(EditPart parent, Node node) { - List children = parent.getChildren(); - for (int i = 0; i < children.size(); i++) { - if (((EditPart) children.get(i)).getModel() == node) { - return i; - } - } - return -1; - } - - static EditPart findEditPart(EditPart parent, Node node) { - List children = parent.getChildren(); - EditPart part; - for (int i = 0; i < children.size(); i++) { - if ((part = (EditPart) children.get(i)).getModel() == node) { - return part; - } - } - return null; - } - - /** - * convert a DesignPosition into DOMPosition. - * - * @param position - * @return the dom position - */ - public static IDOMPosition toDOMRefPosition(DesignRefPosition position) { - // ok, it is not text. - EditPart sibling = position.getRefPart(); - if (sibling != null) { - return new DOMRefPosition((Node) sibling.getModel(), position - .caretIsAtRight()); - } - // should never happens - Assert.isTrue(false); - return null; - } - - /** - * convert a DesignPosition into DOMPosition. - * - * @param position - * @return the dom position - */ - public static IDOMPosition toDOMPosition(DesignPosition position) { - if (!EditValidateUtil.validPosition(position)) { - return null; - } else if (position instanceof DesignRefPosition) { - return toDOMRefPosition((DesignRefPosition) position); - } - EditPart part = position.getContainerPart(); - if (part instanceof TextEditPart) { - Text text = (Text) ((TextEditPart) part).getIDOMNode(); - int offset = position.getOffset(); - if (offset == 0) { - return new DOMPosition(text, 0); - } - String displayData = ((TextEditPart) part).getTextData(); - String nodeData = text.getData(); - if (offset >= displayData.length()) { - // point to end of the text node. - return new DOMPosition(text, nodeData.length()); - } - // we need to calculate it out. - int index = displayOffsetToTextDataOffset(displayData, - nodeData, offset); - return new DOMPosition(text, index); - } - // ok, it is not text. - EditPart sibling = position.getSiblingEditPart(true); - if (sibling instanceof NodeEditPart) { - return new DOMRefPosition(((NodeEditPart) sibling).getDOMNode(), false); - } - - sibling = position.getSiblingEditPart(false); - if (sibling instanceof NodeEditPart) { - return new DOMRefPosition(((NodeEditPart) sibling).getDOMNode(), true); - } - - // no previous sibling, no next sibling, the parent node must be - // empty - return new DOMPosition(((NodeEditPart) part).getDOMNode(), 0); - } - - /** - * if "position" is inside a text node, then split the text node and return - * a new IDOMPosition semantically equal to the position in the two - * splitted text. If the "position" is not a text position, then no action - * will be taken and will return the original position. - * - * @param position - * @return IDOMPosition - */ - public static IDOMPosition splitText(IDOMPosition position) { - Node container = position.getContainerNode(); - if (container instanceof Text) { - int offset = position.getOffset(); - if (offset <= 0) { - // at beginning of text node. no need to split - return new DOMRefPosition(container, false); - } - String textData = ((Text) container).getData(); - if (offset >= textData.length()) { - // at end of text node. no need to split - return new DOMRefPosition(container, true); - } - // ok, we need split - ((Text) container).splitText(offset); - return new DOMRefPosition(container, true); - } - return position; - } - - /** - * Remove all the content in the range. And return the new position. - * - * @param range - * @return the dom position - */ - public static IDOMPosition removeRange(DOMRange range) { - boolean ordered = range.isOrdered(); -// IDOMPosition start = ordered ? range.getStartPosition() : range -// .getEndPosition(); - IDOMPosition end = ordered ? range.getEndPosition() : range - .getStartPosition(); - - // FIXME: Not DONE: - return end; - } - - /** - * try to merge the position in adjacent text node (if it is not already in) - * - * @param position - * @return the dom position - */ - public static IDOMPosition mergeIntoText(IDOMPosition position) { - if (position.getContainerNode() instanceof Text) - return position; - Node pre = position.getPreviousSiblingNode(); - if (pre instanceof Text) { - return new DOMPosition(pre, ((Text) pre).getData().length()); - } - Node after = position.getNextSiblingNode(); - if (after instanceof Text) { - return new DOMPosition(after, 0); - } - return position; - } - - /** - * @param displayData - * @param nodeData - * @param offset - * @return the offset - */ - // FIXME: this method is still buggy - public static int displayOffsetToTextDataOffset(String displayData, - String nodeData, int offset) { - char[] display = displayData.toCharArray(); - if (offset >= display.length) { - // offset is already at end - return nodeData.length(); - } - char[] node = nodeData.toCharArray(); - int nodeDataLength = node.length; - int displayIndex = 0; - int nodeIndex = 0; - - while (displayIndex < offset && nodeIndex < nodeDataLength) { - if (display[displayIndex] == node[nodeIndex]) { - displayIndex++; - nodeIndex++; - continue; - } - if (HTMLUtil.isHTMLWhitespace(node[nodeIndex])) { - if (HTMLUtil.isHTMLWhitespace(display[displayIndex])) { - displayIndex++; - nodeIndex++; - } else { - nodeIndex++; - } - continue; - } - // should not happen! - displayIndex++; - nodeIndex++; - } - - if (nodeIndex >= nodeDataLength) - return nodeDataLength; - // else means displayIndex == offset - // since we already checked that offset < displayLength, so we can get - // the next char - if (display[offset] != ' ') { - // we may need to skip whitespaces after nodeIndex - while (nodeIndex < nodeDataLength - && HTMLUtil.isHTMLWhitespace(node[nodeIndex])) { - nodeIndex++; - } - } - return nodeIndex; - } - - /** - * @param nodeData - * @param displayData - * @param offset - * @return the offset - */ - // FIXME: this method is still buggy - public static int textDataOffsetToDisplayOffset(String nodeData, - String displayData, int offset) { - if (offset >= nodeData.length()) { - return displayData.length(); - } - char[] node = nodeData.toCharArray(); - char[] display = displayData.toCharArray(); - - int displayIndex = 0; - int nodeIndex = 0; - int displayDataLength = display.length; - - while (nodeIndex < offset && displayIndex < displayDataLength) { - if (display[displayIndex] == node[nodeIndex]) { - displayIndex++; - nodeIndex++; - continue; - } - if (HTMLUtil.isHTMLWhitespace(node[nodeIndex])) { - if (HTMLUtil.isHTMLWhitespace(display[displayIndex])) { - displayIndex++; - nodeIndex++; - } else { - nodeIndex++; - } - continue; - } - // should not happen! - displayIndex++; - nodeIndex++; - } - return displayIndex; - } - - /** - * Convert a IDOMPosition to IDOMRefPosition. If can't convert to - * IDOMRefPosition, will return the original one. - * - * @param position - * @return IDOMPosition - */ - public static IDOMPosition toDOMRefPosition(IDOMPosition position) { - if (position.isText()) { - return position; // can't convert Text node. - } - if (position instanceof IDOMRefPosition) { - return position; - } - if (position.getNextSiblingNode() != null) { - return new DOMRefPosition(position.getNextSiblingNode(), false); - } - if (position.getPreviousSiblingNode() != null) { - return new DOMRefPosition(position.getPreviousSiblingNode(), true); - } - return new DOMRefPosition2(position.getContainerNode(), true); - } -} |