| /******************************************************************************* |
| * 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.css.ui.internal.views.contentoutline; |
| |
| |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.wst.css.core.internal.provisional.document.ICSSDocument; |
| import org.eclipse.wst.css.core.internal.provisional.document.ICSSModel; |
| import org.eclipse.wst.css.core.internal.provisional.document.ICSSNode; |
| import org.eclipse.wst.css.core.internal.provisional.document.ICSSPrimitiveValue; |
| import org.eclipse.wst.css.core.internal.provisional.document.ICSSStyleDeclItem; |
| import org.eclipse.wst.css.core.internal.provisional.document.ICSSStyleDeclaration; |
| import org.w3c.dom.css.CSSRule; |
| import org.w3c.dom.stylesheets.MediaList; |
| |
| |
| /** |
| * A Content provider for a JFace viewer used to display DOM nodes. This |
| * content provider does not use adapters. |
| */ |
| class JFaceNodeContentProviderCSS implements ITreeContentProvider { |
| |
| public JFaceNodeContentProviderCSS() { |
| super(); |
| } |
| |
| /** |
| */ |
| protected void addElements(Object element, ArrayList v) { |
| |
| ICSSNode node; |
| |
| if (element instanceof ICSSModel) { |
| ICSSModel model = (ICSSModel) element; |
| ICSSDocument doc = model.getDocument(); |
| node = doc.getFirstChild(); |
| } else if (element instanceof ICSSNode) { |
| node = ((ICSSNode) element).getFirstChild(); |
| } else |
| return; |
| |
| while (node != null) { |
| if (node instanceof CSSRule) { |
| v.add(node); |
| } |
| |
| node = node.getNextSibling(); |
| } |
| |
| } |
| |
| /** |
| * The visual part that is using this content provider is about to be |
| * disposed. Deallocate all allocated SWT resources. |
| */ |
| public void dispose() { |
| } |
| |
| /** |
| * Returns an enumeration containing all child nodes of the given element, |
| * which represents a node in a tree. The difference to |
| * <code>IStructuredContentProvider.getElements(Object)</code> is as |
| * follows: <code>getElements</code> is called to obtain the tree |
| * viewer's root elements. Method <code>getChildren</code> is used to |
| * obtain the children of a given node in the tree, which can can be a |
| * root node, too. |
| */ |
| public Object[] getChildren(Object object) { |
| if (object instanceof ICSSNode) { |
| ICSSNode node = (ICSSNode) object; |
| short nodeType = node.getNodeType(); |
| if (nodeType == ICSSNode.STYLERULE_NODE || nodeType == ICSSNode.PAGERULE_NODE || nodeType == ICSSNode.FONTFACERULE_NODE) { |
| for (node = node.getFirstChild(); node != null && !(node instanceof ICSSStyleDeclaration); node.getNextSibling()) { |
| // nop |
| } |
| } |
| List children = new ArrayList(); |
| ICSSNode child = (node != null) ? node.getFirstChild() : null; |
| while (child != null) { |
| if (!(child instanceof ICSSPrimitiveValue) && !(child instanceof MediaList)) { |
| children.add(child); |
| } |
| child = child.getNextSibling(); |
| } |
| return children.toArray(); |
| } |
| return new Object[0]; |
| } |
| |
| /** |
| * Returns an enumeration with the elements belonging to the passed |
| * element. These elements can be presented as rows in a table, items in a |
| * list etc. |
| */ |
| public Object[] getElements(Object object) { |
| // The root is usually an instance of an XMLStructuredModel in |
| // which case we want to extract the document. |
| |
| if (object instanceof ICSSModel) { |
| ArrayList v = new ArrayList(); |
| // internalGetElements(object, v); |
| addElements(object, v); |
| return v.toArray(); |
| } |
| return new Object[0]; |
| |
| } |
| |
| /** |
| * Returns the parent for the given element. This method can return |
| * <code>null</code> indicating that the parent can't be computed. In |
| * this case the tree viewer can't expand a given node correctly if |
| * requested. |
| */ |
| public Object getParent(Object object) { |
| // IJFaceNodeAdapter adapter = getAdapter(object); |
| /* |
| * ICSSNodeAdapter adapter = (ICSSNodeAdapter)getAdapter(object); if |
| * (adapter != null) return adapter.getParent((ICSSNode) object); else |
| * return null; |
| */ |
| if (object instanceof ICSSNode) { |
| ICSSNode node = ((ICSSNode) object).getParentNode(); |
| if (node != null && node.getNodeType() == ICSSNode.STYLEDECLARATION_NODE) { |
| node = node.getParentNode(); |
| } |
| return node; |
| } |
| return null; |
| } |
| |
| /** |
| * Returns <code>true</code> if the given element has children. |
| * Otherwise <code>false</code> is returned. |
| */ |
| public boolean hasChildren(Object object) { |
| // return getAdapter(object).hasChildren((ICSSNode) object); |
| if (object instanceof ICSSNode) { |
| if (object instanceof ICSSStyleDeclItem) |
| return false; |
| else |
| return ((ICSSNode) object).hasChildNodes(); |
| } |
| return false; |
| } |
| |
| /** |
| * Called when the viewer's input is changing from <code>oldInput</code> |
| * to <code>newInput</code>. Both <code>newInput</code> and |
| * <code>oldInput</code> can be <code>null</code>. If |
| * <code>oldInput</code> is <code>null</code> it is the viewer's first |
| * connection to the content provider. If <code>newInput</code> is |
| * <code>null</code> the visual part is disconnected from any input. A |
| * typical implementation of this methods registers the content provider |
| * as a listener to changes on the new input, and deregisters the viewer |
| * from the old input. The content provider then updates the viewer in |
| * response to change notifications from the input. |
| */ |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
| //// If there was no old input, then we must be providing content for |
| // this part for the first time... |
| //if (oldInput == null) { |
| //// If the part is an IDomainListener then make the part start |
| // listening to us. |
| //if (viewer instanceof IDomainListener) |
| //domainNotifier.addDomainListener((IDomainListener) viewer); |
| //} |
| //// If there is no new input, we must clean ourselves up as if we'd |
| // never seen the viewer. |
| //else |
| //if (newInput == null) { |
| //// If the part is an IDomainListener, then we make it stop |
| // listening to us. |
| //if (viewer instanceof IDomainListener) |
| //domainNotifier.removeDomainListener((IDomainListener) viewer); |
| |
| //} |
| } |
| |
| /** |
| */ |
| /* |
| * protected void internalGetElements(Object element, ArrayList v) { |
| * |
| * ICSSNode node; |
| * |
| * if (element instanceof ICSSModel) { ICSSModel model = |
| * (ICSSModel)element; ICSSDocument doc = model.getDocument(); |
| * adapterFactory.adapt((INodeNotifier)doc); node = doc.getFirstChild(); } |
| * else if (element instanceof ICSSNode) { node = |
| * ((ICSSNode)element).getFirstChild(); } else { return; } |
| * |
| * while (node != null) { switch (node.getNodeType()) { case |
| * ICSSNode.STYLEDECLARATION_NODE: adapterFactory.adapt((INodeNotifier) |
| * node); break; case ICSSNode.STYLERULE_NODE: case |
| * ICSSNode.FONTFACERULE_NODE: case ICSSNode.PAGERULE_NODE: case |
| * ICSSNode.IMPORTRULE_NODE: case ICSSNode.MEDIARULE_NODE: v.add(node); |
| * adapterFactory.adapt((INodeNotifier) node); break; default: |
| * adapterFactory.adapt((INodeNotifier) node); break; } |
| * |
| * node = node.getNextSibling(); } |
| * } |
| */ |
| /** |
| * Checks whether the given element is deleted or not. |
| */ |
| public boolean isDeleted(Object element) { |
| return false; |
| } |
| } |