X-Git-Url: http://git.phpeclipse.com

diff --git a/archive/net.sourceforge.phpeclipse.quantum.sql/src/com/quantum/view/subset/SubsetContentProvider.java b/archive/net.sourceforge.phpeclipse.quantum.sql/src/com/quantum/view/subset/SubsetContentProvider.java
new file mode 100644
index 0000000..dd8133b
--- /dev/null
+++ b/archive/net.sourceforge.phpeclipse.quantum.sql/src/com/quantum/view/subset/SubsetContentProvider.java
@@ -0,0 +1,158 @@
+package com.quantum.view.subset;
+
+import java.util.Vector;
+
+import com.quantum.Messages;
+import com.quantum.sql.metadata.MetaDataXMLInterface;
+import com.quantum.view.bookmark.ColumnNode;
+import com.quantum.view.bookmark.TreeNode;
+
+import org.eclipse.jface.viewers.ITreeContentProvider;
+import org.eclipse.jface.viewers.Viewer;
+import org.w3c.dom.Element;
+import org.w3c.dom.NodeList;
+
+public class SubsetContentProvider implements ITreeContentProvider {
+	private Vector subsets = new Vector();
+	private static SubsetContentProvider instance = null;
+	private boolean hasChanged = false;
+
+   /**
+    * Singleton accessor
+    */
+	public static synchronized SubsetContentProvider getInstance() {
+		if (instance == null) {
+			instance = new SubsetContentProvider();
+		}
+		return instance;
+	}
+
+	private SubsetContentProvider() {
+	}
+
+	public void exportXML(Element root) {
+		System.out.println("Subsets: Saving to Element"); //$NON-NLS-1$
+		Element subsetRoot = MetaDataXMLInterface.createElementText(root,Messages.getString("ExportXMLAction.Subsets"), ""); //$NON-NLS-1$ //$NON-NLS-2$
+		for (int i = 0; i < subsets.size(); i++) {
+			SubsetNode current = (SubsetNode) subsets.get(i);
+			current.exportXML(subsetRoot);
+		}
+	}
+	
+	/**
+	 * Imports the data from an XML file to the tree. Does not set the tree to
+	 * changed because it's usually invoked from the initial import routine.
+	 * @param root
+	 */
+	public void importXML(Element root){
+		System.out.println("Bookmarks: Loading from Element"); //$NON-NLS-1$
+		Vector newSubsets = new Vector();
+		NodeList nodes = root.getElementsByTagName(Messages.getString("ExportXMLAction.Subset")); //$NON-NLS-1$
+		for (int i = 0; i < nodes.getLength(); i++) {
+			SubsetNode subset = new SubsetNode();
+			Element node = (Element) nodes.item(i);
+			subset.importXML(node,true);
+			newSubsets.add(subset);
+		}
+		subsets = newSubsets;
+	}
+	
+
+	public Object[] getChildren(Object parentElement) {
+		if (parentElement.equals(SubsetRoot.ROOT)) {
+			return subsets.toArray();
+		} else if (parentElement instanceof TreeNode) {
+			TreeNode node = (TreeNode) parentElement;
+			return node.getChildren();
+		}
+		return SubsetRoot.EMPTY_ARRAY;
+	}
+
+	public Object[] getElements(Object inputElement) {
+		return getChildren(inputElement);
+	}
+
+	public Object getParent(Object element) {
+		if (element.equals(SubsetRoot.ROOT)) {
+			return null;
+		} else if (element instanceof TreeNode) {
+			TreeNode node = (TreeNode) element;
+			return node.getParent();
+		}
+		return null;
+	}
+
+	public boolean hasChildren(Object element) {
+		if (element.equals(SubsetRoot.ROOT)) {
+			return true;
+		} else if (element instanceof TreeNode) {
+			TreeNode node = (TreeNode) element;
+			return node.hasChildren();
+		}
+		return false;
+	}
+
+    public void setChildren(SubsetNode b, Vector tables) {
+    	b.setChildren(tables);
+    }
+
+	public void addSubset(SubsetNode b) {
+		hasChanged = true;
+		if (!subsets.contains(b)) {
+			subsets.addElement(b);
+		}
+	}
+	public void removeSubset(SubsetNode b) {
+		hasChanged = true;
+		if (subsets.contains(b)) {
+			subsets.removeElement(b);
+		}
+	}
+	
+	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
+	}
+	
+	public void dispose() {
+	}
+	
+	public boolean hasChanged() {
+		return hasChanged;
+	}
+	
+	public int getSize() {
+		return subsets.size();
+	}
+	
+	/**
+	 * @param b
+	 */
+	public void setHasChanged(boolean b) {
+		hasChanged = b;
+	}
+
+	/**
+	 * @param column
+	 */
+	public void deleteColumn(ColumnNode column) {
+        // TODO: reinstate this
+//		TreeNode node = (TreeNode) column.getParent();
+//		if (!(node instanceof HasMetaData)) return;
+//		ObjectMetaData metadata = ((HasMetaData)node).getMetaData();
+//		if (metadata == null) return;
+//		metadata.dropColumn(column.getName());
+//		setHasChanged(true);
+//		
+	}
+
+	/**
+	 * @param object
+	 */
+	public void deleteObject(ObjectNode object) {
+		SubsetNode node = (SubsetNode) object.getParent();
+		if (!(node instanceof SubsetNode)) return;
+		node.remove(object);
+		setHasChanged(true);
+		
+	}
+
+}