diff options
Diffstat (limited to 'bundles/org.eclipse.wst.xml.ui/src-multipage/org/eclipse/wst/xml/ui/internal/tabletree/TreeContentHelper.java')
| -rw-r--r-- | bundles/org.eclipse.wst.xml.ui/src-multipage/org/eclipse/wst/xml/ui/internal/tabletree/TreeContentHelper.java | 431 |
1 files changed, 0 insertions, 431 deletions
diff --git a/bundles/org.eclipse.wst.xml.ui/src-multipage/org/eclipse/wst/xml/ui/internal/tabletree/TreeContentHelper.java b/bundles/org.eclipse.wst.xml.ui/src-multipage/org/eclipse/wst/xml/ui/internal/tabletree/TreeContentHelper.java deleted file mode 100644 index 8a0d26b5c0..0000000000 --- a/bundles/org.eclipse.wst.xml.ui/src-multipage/org/eclipse/wst/xml/ui/internal/tabletree/TreeContentHelper.java +++ /dev/null @@ -1,431 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2004 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 - *******************************************************************************/ - - -package org.eclipse.wst.xml.ui.internal.tabletree; - -import java.util.ArrayList; -import java.util.Iterator; -import java.util.List; -import java.util.Vector; - -import org.eclipse.swt.widgets.Display; -import org.eclipse.ui.PlatformUI; -import org.eclipse.wst.xml.core.internal.contentmodel.util.DOMWriter; -import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel; -import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode; -import org.w3c.dom.Attr; -import org.w3c.dom.CharacterData; -import org.w3c.dom.DOMException; -import org.w3c.dom.Document; -import org.w3c.dom.DocumentType; -import org.w3c.dom.Element; -import org.w3c.dom.NamedNodeMap; -import org.w3c.dom.Node; -import org.w3c.dom.ProcessingInstruction; -import org.w3c.dom.Text; - - -/** - * This performs the work of taking a DOM tree and converting it to a - * displayable 'UI' tree. - * - * For example : - white space text nodes are ommited from the 'UI' tree - - * adjacent Text and EntityReference nodes are combined into a single 'UI' - * node - Elements with 'text only' children are diplayed without children - * - */ -public class TreeContentHelper { - - public static final int HIDE_WHITE_SPACE_TEXT_NODES = 8; - public static final int COMBINE_ADJACENT_TEXT_AND_ENTITY_REFERENCES = 16; - public static final int HIDE_ELEMENT_CHILD_TEXT_NODES = 32; - - protected int style = HIDE_WHITE_SPACE_TEXT_NODES | COMBINE_ADJACENT_TEXT_AND_ENTITY_REFERENCES | HIDE_ELEMENT_CHILD_TEXT_NODES; - - /** - * - */ - public boolean hasStyleFlag(int flag) { - return (style & flag) != 0; - } - - /** - * - */ - public Object[] getChildren(Object element) { - Object[] result = null; - - if (element instanceof Node) { - Node node = (Node) element; - List list = new ArrayList(); - boolean textContentOnly = true; - - NamedNodeMap map = node.getAttributes(); - if (map != null) { - int length = map.getLength(); - for (int i = 0; i < length; i++) { - list.add(map.item(i)); - textContentOnly = false; - } - } - - Node prevIncludedNode = null; - for (Node childNode = node.getFirstChild(); childNode != null; childNode = childNode.getNextSibling()) { - int childNodeType = childNode.getNodeType(); - boolean includeNode = true; - - if (includeNode && hasStyleFlag(HIDE_WHITE_SPACE_TEXT_NODES)) { - if (isIgnorableText(childNode)) { - // filter out the ignorable text node - includeNode = false; - } - } - - if (includeNode && hasStyleFlag(COMBINE_ADJACENT_TEXT_AND_ENTITY_REFERENCES)) { - if (isTextOrEntityReferenceNode(childNode) && prevIncludedNode != null && isTextOrEntityReferenceNode(prevIncludedNode)) { - // we only show the first of a list of adjacent text - // or entity reference node in the tree - // so we filter out this subsequent one - includeNode = false; - } - } - - if (hasStyleFlag(HIDE_ELEMENT_CHILD_TEXT_NODES)) { - if (childNodeType != Node.TEXT_NODE && childNodeType != Node.ENTITY_REFERENCE_NODE) { - textContentOnly = false; - } - } - - if (includeNode) { - list.add(childNode); - prevIncludedNode = childNode; - } - } - - if (hasStyleFlag(HIDE_ELEMENT_CHILD_TEXT_NODES) && textContentOnly) { - result = new Object[0]; - } else { - result = list.toArray(); - } - } - return result; - } - - /** - * - */ - protected boolean isTextOrEntityReferenceNode(Node node) { - return node.getNodeType() == Node.TEXT_NODE || node.getNodeType() == Node.ENTITY_REFERENCE_NODE; - } - - /** - * - */ - public boolean isIgnorableText(Node node) { - boolean result = false; - if (node.getNodeType() == Node.TEXT_NODE) { - String data = ((Text) node).getData(); - result = (data == null || data.trim().length() == 0); - } - return result; - } - - /** - * - */ - public boolean isCombinedTextNode(Node node) { - boolean result = false; - if (node.getNodeType() == Node.TEXT_NODE) { - Node nextNode = node.getNextSibling(); - if (nextNode != null) { - if (nextNode.getNodeType() == Node.ENTITY_REFERENCE_NODE) { - result = true; - } - } - } else if (node.getNodeType() == Node.ENTITY_REFERENCE_NODE) { - result = true; - } - return result; - } - - /** - * - */ - public List getCombinedTextNodeList(Node theNode) { - List list = new Vector(); - boolean prevIsEntity = false; - for (Node node = theNode; node != null; node = node.getNextSibling()) { - int nodeType = node.getNodeType(); - if (nodeType == Node.ENTITY_REFERENCE_NODE) { - prevIsEntity = true; - list.add(node); - } else if (nodeType == Node.TEXT_NODE && (prevIsEntity || node == theNode)) { - prevIsEntity = false; - list.add(node); - } else { - break; - } - } - return list; - } - - /** - * If the element is has 'text only' content this method will return the - * list of elements that compose the text only content - */ - public List getElementTextContent(Element element) { - List result = null; - if (!element.hasAttributes()) { - for (Node node = element.getFirstChild(); node != null; node = node.getNextSibling()) { - if (node.getNodeType() == Node.TEXT_NODE || node.getNodeType() == Node.ENTITY_REFERENCE_NODE) { - if (result == null) { - result = new Vector(); - } - result.add(node); - } else { - result = null; - break; - } - } - } - return result; - } - - /** - * - */ - public String getNodeValue(Node node) { - String result = null; - int nodeType = node.getNodeType(); - switch (nodeType) { - case Node.ATTRIBUTE_NODE : { - result = ((Attr) node).getValue(); - break; - } - case Node.CDATA_SECTION_NODE : - // drop thru - case Node.COMMENT_NODE : { - result = ((CharacterData) node).getData(); - break; - } - case Node.DOCUMENT_TYPE_NODE : { - result = getDocumentTypeValue((DocumentType) node); - break; - } - case Node.ELEMENT_NODE : { - result = getElementNodeValue((Element) node); - break; - } - case Node.ENTITY_REFERENCE_NODE : - // drop thru - case Node.TEXT_NODE : { - result = getTextNodeValue(node); - break; - } - case Node.PROCESSING_INSTRUCTION_NODE : { - result = ((ProcessingInstruction) node).getData(); - break; - } - } - return result; - } - - /** - * - */ - public void setNodeValue(Node node, String value) { - int nodeType = node.getNodeType(); - try { - switch (nodeType) { - case Node.ATTRIBUTE_NODE : { - ((Attr) node).setValue(value); - break; - } - case Node.CDATA_SECTION_NODE : - // drop thru - case Node.COMMENT_NODE : { - ((CharacterData) node).setData(value); - break; - } - case Node.ELEMENT_NODE : { - setElementNodeValue((Element) node, value); - break; - } - case Node.ENTITY_REFERENCE_NODE : - // drop thru - case Node.TEXT_NODE : { - setTextNodeValue(node, value); - break; - } - case Node.PROCESSING_INSTRUCTION_NODE : { - ((ProcessingInstruction) node).setData(value); - break; - } - } - } catch (DOMException e) { - Display d = getDisplay(); - if (d != null) - d.beep(); - } - } - - private Display getDisplay() { - - return PlatformUI.getWorkbench().getDisplay(); - } - - - /** - * - */ - protected String getDocumentTypeValue(DocumentType documentType) { - return DOMWriter.getDocumentTypeData(documentType); - } - - /** - * - */ - protected String getElementNodeValue(Element element) { - String result = null; - List list = getElementTextContent(element); - if (list != null) { - result = getValueForTextContent(list); - } - return result; - } - - /** - * - */ - protected void setElementNodeValue(Element element, String value) { - List list = getElementTextContent(element); - if (list != null) { - setValueForTextContent(list, value); - } else { - Document document = element.getOwnerDocument(); - Text text = document.createTextNode(value); - element.appendChild(text); - } - } - - /** - * - */ - protected String getTextNodeValue(Node node) { - String result = null; - List list = null; - if (isCombinedTextNode(node)) { - list = getCombinedTextNodeList(node); - } else { - list = new Vector(); - list.add(node); - } - result = getValueForTextContent(list); - return result; - } - - /** - * - */ - protected void setTextNodeValue(Node node, String value) { - List list = null; - if (isCombinedTextNode(node)) { - list = getCombinedTextNodeList(node); - } else { - list = new Vector(); - list.add(node); - } - setValueForTextContent(list, value); - } - - public Text getEffectiveTextNodeForCombinedNodeList(List list) { - Text result = null; - for (Iterator i = list.iterator(); i.hasNext();) { - Node node = (Node) i.next(); - if (node.getNodeType() == Node.TEXT_NODE) { - result = (Text) node; - break; - } - } - return result; - } - - /** - * - */ - protected String getValueForTextContent(List list) { - String result = null; - if (list.size() > 0) { - IDOMNode first = (IDOMNode) list.get(0); - IDOMNode last = (IDOMNode) list.get(list.size() - 1); - IDOMModel model = first.getModel(); - int start = first.getStartOffset(); - int end = last.getEndOffset(); - try { - result = model.getStructuredDocument().get(start, end - start); - } catch (Exception e) { - } - } - - // we trim the content so that it looks nice when viewed - // we need to be carfull to preserve the 'trimmed' text when the value - // is set (see setValueForTextContent) - if (result != null) { - result = result.trim(); - } - return result; - } - - /** - * - */ - protected void setValueForTextContent(List list, String value) { - //String oldValue = getValueForTextContent(); - // we worry about preserving trimmed text - if (list.size() > 0) { - IDOMNode first = (IDOMNode) list.get(0); - IDOMNode last = (IDOMNode) list.get(list.size() - 1); - int start = first.getStartOffset(); - int end = last.getEndOffset(); - first.getModel().getStructuredDocument().replaceText(this, start, end - start, value); - } - } - - /** - * - */ - public boolean isEditable(Node node) { - int nodeType = node.getNodeType(); - boolean result = false; - switch (nodeType) { - case Node.ATTRIBUTE_NODE : - // drop thru - case Node.CDATA_SECTION_NODE : - // drop thru - case Node.COMMENT_NODE : - // drop thru - case Node.ENTITY_REFERENCE_NODE : - // drop thru - case Node.TEXT_NODE : - // drop thru - case Node.PROCESSING_INSTRUCTION_NODE : { - result = true; - break; - } - case Node.ELEMENT_NODE : { - result = getElementTextContent((Element) node) != null || node.getChildNodes().getLength() == 0; - break; - } - } - return result; - } -}
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