protected final void loadChildren(DynamicNode node) throws DbException {
if (node.hasLoaded() || node.isLeaf()) return;
node.setHasLoaded();
Object userObject = node.getUserObject();
if (userObject == ROOT) return;
SrVector children = new SrVector(10);
boolean isSorted = true;
DbObject dbParent = null;
if (userObject == DB_RAM) {
Db[] dbs = Db.getDbs();
for (int i = 0; i < dbs.length; i++) {
if (dbs[i] instanceof DbRAM) insertProjects(children, dbs[i]);
}
} else if (userObject instanceof Db) {
insertProjects(children, (Db) userObject);
} else {
dbParent = (DbObject) userObject;
dbParent.getDb().beginTrans(Db.READ_TRANS);
insertComponents(children, dbParent);
isSorted = childrenAreSorted(dbParent);
dbParent.getDb().commitTrans();
}
if (isSorted) {
children.sort(getComparator(dbParent));
}
ArrayList groupNodeList = new ArrayList();
DynamicNode groupNode = null;
Enumeration enumeration = children.elements();
while (enumeration.hasMoreElements()) {
DynamicNode childNode = (DynamicNode) enumeration.nextElement();
GroupParams group = childNode.getGroupParams();
if (group.name == null) {
node.add(childNode);
} else {
if (groupNode == null) {
groupNode = createGroupNode(group);
node.add(groupNode);
groupNodeList.add(groupNode);
} else if (!groupNode.toString().equals(group.name)) {
boolean groupFound = false;
for (int i = 0; i < groupNodeList.size(); i++) {
groupNode = (DynamicNode) groupNodeList.get(i);
if (groupNode.toString().equals(group.name)) {
groupFound = true;
break;
}
}
if (!groupFound) {
groupNode = createGroupNode(group);
node.add(groupNode);
groupNodeList.add(groupNode);
}
}
groupNode.add(childNode);
}
}
groupNodeList.clear();
}
// This method updates the explorer for changes in a relation N where all
// children are secondary nodes.
// IMPORTANT: a node whose children are secondary nodes cannot have grouping
// nodes.
protected final void updateSecondaryChildren(DbUpdateEvent evt) throws DbException {
if (!ApplicationContext.getSemanticalModel()
.isVisibleOnScreen(evt.dbo, evt.neighbor, Explorer.class)) return;
DynamicNode parentNode = getDynamicNode(evt.dbo, false);
if (parentNode == null || !parentNode.hasLoaded()) return;
DynamicNode childNode = null;
int nb = getChildCount(parentNode);
for (int i = 0; i < nb; i++) {
DynamicNode node = (DynamicNode) getChild(parentNode, i);
if (((DynamicNode) node.getUserObject()).getUserObject() == evt.neighbor) {
childNode = node;
break;
}
}
if (evt.op == Db.REMOVE_FROM_RELN) {
if (childNode != null) removeNodeFromParent(childNode);
} else if (evt.op == Db.ADD_TO_RELN) {
if (childNode == null) {
childNode = createSecondaryNode(evt.dbo, evt.neighbor);
int index = getInsertionIndex(evt.dbo, evt.neighbor, parentNode, childNode);
insertNodeInto(childNode, parentNode, index);
}
} else { // Db.REINSERT_IN_RELN
if (!childrenAreSorted(evt.dbo) && childNode != null) {
removeNodeFromParent(childNode);
int index = getInsertionIndex(evt.dbo, evt.neighbor, parentNode, childNode);
insertNodeInto(childNode, parentNode, index);
}
}
}
protected final void refreshChildren(DynamicNode parentNode) throws DbException {
int count = getChildCount(parentNode);
for (int i = 0; i < count; i++) {
DynamicNode node = (DynamicNode) getChild(parentNode, i);
if (node.getUserObject() instanceof GroupParams) refreshChildren(node);
else refresh(node);
}
}
private DynamicNode getGroupNode(DynamicNode parentNode, GroupParams group, int iStart) {
DynamicNode nodeFound = null;
int count = getChildCount(parentNode);
for (int i = iStart; i < count; i++) {
DynamicNode node = (DynamicNode) getChild(parentNode, i);
if (node.getUserObject() instanceof GroupParams && node.toString().equals(group.name)) {
nodeFound = node;
break;
}
}
return nodeFound;
}
private DynamicNode getDynamicNode(DynamicNode parentNode, Object userObj, int iStart)
throws DbException {
DynamicNode nodeFound = null;
int count = getChildCount(parentNode);
for (int i = iStart; i < count; i++) {
DynamicNode node = (DynamicNode) getChild(parentNode, i);
if (node.getUserObject() == userObj) {
nodeFound = node;
break;
}
}
return nodeFound;
}
private void refreshNode(DynamicNode srcNode, DynamicNode parentNode, int index)
throws DbException {
DynamicNode dstNode = getDynamicNode(parentNode, srcNode.getUserObject(), index);
if (dstNode == null) {
insertNodeInto(srcNode, parentNode, index);
} else {
if (dstNode != getChild(parentNode, index)) {
removeNodeFromParent(dstNode);
insertNodeInto(dstNode, parentNode, index);
}
if (dstNode.getUserObject() instanceof DynamicNode) {
nodeChanged(dstNode); // in case text of primary node has
// changed
} else if (!dstNode.toString().equals(srcNode.toString())
|| dstNode.getIcon() != srcNode.getIcon()
|| (dstNode.getToolTips() != null
&& !dstNode.getToolTips().equals(srcNode.getToolTips()))) {
dstNode.setDisplayText(srcNode.toString(), srcNode.getEditText());
dstNode.setIcon(srcNode.getIcon());
dstNode.setToolTips(srcNode.getToolTips());
nodeChanged(dstNode);
}
}
}
// This method refreshes the display text of a node.
protected final void updateNode(DbObject dbo) throws DbException {
DynamicNode node = getDynamicNode(dbo, false);
if (node == null) return;
// backup selection and restore later
Object focusObject = ApplicationContext.getFocusManager().getFocusObject();
TreePath[] selPaths = null;
if (focusObject instanceof ExplorerView) {
selPaths = ((ExplorerView) focusObject).getSelectionPaths();
}
String displayText = getDisplayText(null, dbo);
String editText = getEditText(null, dbo);
String toolTipText = getToolTipsText(null, dbo);
Icon icon = getIcon(dbo);
node.setDisplayText(displayText, editText);
node.setToolTips(toolTipText);
node.setIcon(icon);
nodeChanged(node);
DynamicNode parentNode = (DynamicNode) node.getParent();
Object parent = parentNode.getUserObject();
if (!(parent instanceof DbObject) || childrenAreSorted((DbObject) parent)) {
removeNodeFromParent(node);
int index = getSortedIndex(parentNode, node);
insertNodeInto(node, parentNode, index);
}
// Restore selection
if (focusObject instanceof ExplorerView && selPaths != null) {
ExplorerView explorerView = (ExplorerView) focusObject;
try { // Should not occurs
explorerView.setSelectionPaths(selPaths);
} catch (Exception e) {
explorerView.setSelectionPaths(new TreePath[] {});
}
}
}
// Remove the group node if this node is the last of its group.
protected final void removeNode(DynamicNode node) {
DynamicNode parentNode = (DynamicNode) node.getParent();
if (parentNode.getUserObject() instanceof GroupParams && getChildCount(parentNode) == 1)
removeNodeFromParent(parentNode);
else removeNodeFromParent(node);
}
protected final void refresh(DynamicNode parentNode) throws DbException {
if (ApplicationContext.getFocusManager().isGuiLocked()) return;
if (parentNode == null) return;
if (!parentNode.hasLoaded() || parentNode.isLeaf()) {
if (parentNode.getUserObject() instanceof DbObject)
updateNode((DbObject) parentNode.getUserObject());
return;
}
Object userObject = parentNode.getUserObject();
if (userObject == ROOT) {
int count = getChildCount(parentNode);
for (int i = 0; i < count; i++) {
DynamicNode node = (DynamicNode) getChild(parentNode, i);
userObject = node.getUserObject();
if (userObject == DB_RAM) refresh(node);
else {
if (((Db) userObject).isValid()) {
((Db) userObject).beginTrans(Db.READ_TRANS);
refresh(node);
((Db) userObject).commitTrans();
} else {
removeNode(node);
}
}
}
return;
}
if (userObject == DB_RAM) {
int count = getChildCount(parentNode);
for (int i = count - 1; i >= 0; i--) {
DynamicNode node = (DynamicNode) getChild(parentNode, i);
Db db = ((DbObject) node.getUserObject()).getDb();
if (!db.isValid()) {
removeNode(node);
continue;
}
db.beginTrans(Db.READ_TRANS);
refresh(node);
// refresh the display text for the projects - we do not want to
// apply a full update
// using update(dbo) because we want to preserve the expanded
// state for projects.
node.setDisplayText(getDisplayText(null, (DbObject) node.getUserObject()));
db.commitTrans();
}
// check for missing Db
Db[] dbs = Db.getDbs();
for (int i = 0; i < dbs.length; i++) {
if (!dbs[i].isValid() || !(dbs[i] instanceof DbRAM)) continue;
DynamicNode dbNode = getDynamicNode(parentNode, dbs[i], 0);
if (dbNode != null) continue;
dbs[i].beginTrans(Db.READ_TRANS);
DbEnumeration dbEnum = dbs[i].getRoot().getComponents().elements(DbProject.metaClass);
if (dbEnum.hasMoreElements()) {
getDynamicNode(dbEnum.nextElement(), false);
}
dbEnum.close();
dbs[i].commitTrans();
}
return;
}
SrVector children = new SrVector(10);
if (userObject instanceof Db) {
insertProjects(children, (Db) userObject);
children.sort();
} else if (((DbObject) userObject).isAlive()) {
insertComponents(children, (DbObject) userObject);
if (childrenAreSorted((DbObject) userObject))
children.sort(getComparator((DbObject) userObject));
}
DynamicNode groupNode = null;
int index = 0;
int iGroup = 0;
for (int i = 0; i < children.size(); i++) {
DynamicNode srcNode = (DynamicNode) children.elementAt(i);
GroupParams group = srcNode.getGroupParams();
if (group.name == null) {
refreshNode(srcNode, parentNode, index);
index++;
} else {
if (groupNode == null || !groupNode.toString().equals(group.name)) {
if (groupNode != null) deleteNodes(groupNode, iGroup);
groupNode = getGroupNode(parentNode, group, index);
if (groupNode == null) {
groupNode = createGroupNode(group);
insertNodeInto(groupNode, parentNode, index);
} else if (groupNode != getChild(parentNode, index)) {
removeNodeFromParent(groupNode);
insertNodeInto(groupNode, parentNode, index);
}
index++;
iGroup = 0;
}
refreshNode(srcNode, groupNode, iGroup);
iGroup++;
}
}
if (groupNode != null) deleteNodes(groupNode, iGroup);
deleteNodes(parentNode, index);
// Refresh subnodes in a separate pass to avoid interference from
// automatic
// adding of a primary node when adding a secondary node.
refreshChildren(parentNode);
}
