/**
* gets the parent folder of the selected item in the tree.
*
* @return Folder
* @throws NoItemSelectedException if no item in the tree is selected, of if the selected item has
* no parent (Subcribed Feeds folder, outbox or trash)
*/
public Folder getParentOfSelected() throws NoItemSelectedException {
if (treeViewer.getSelection() instanceof IStructuredSelection) {
IStructuredSelection selection = (IStructuredSelection) treeViewer.getSelection();
Object o = selection.getFirstElement();
// if the item selected in the tree is a folder, then traverses the tree to find its parent
// folder
// throws an exception if the item is a root item
if (o instanceof Folder) {
Folder f = (Folder) o;
try {
if (f.getId() != control.getSubscribedFeeds().getId())
return (Folder) treeViewer.getTree().getSelection()[0].getParentItem().getData();
else throw new NoItemSelectedException("Top level folder has no parent");
} catch (ControlException e) {
throw new NoItemSelectedException("No Item Selected");
}
}
// if the item selected in the tree is a feed, then traverses the tree to
// find its parent, but throws an exception if its a top-level item(outbox or trash).
if (o instanceof Feed) {
Feed f = (Feed) o;
try {
if (f.getId() != control.getTrash().getId() && f.getId() != control.getOutbox().getId())
return (Folder) treeViewer.getTree().getSelection()[0].getParentItem().getData();
else throw new NoItemSelectedException("Top level feed has no parent");
} catch (ControlException e) {
throw new NoItemSelectedException("No Item Selected");
}
}
}
throw new NoItemSelectedException("No Item Selected");
}
/** Updates the view of the trash in the tree */
public void updateTrash() {
treeViewer.refresh(((TreeItem) treeViewer.getTree().getItem(2)).getData());
try {
Feed trash = control.getTrash();
if (mostRecentFeed != null && mostRecentFeed.getId() == trash.getId()) {
updateArticles(trash);
}
} catch (ControlException e) {
}
}
/**
* Gets the currently selected folder in the view. If no folder is selected, gets the folder that
* is the parent of the first selected item. If nothing is selected, then throws an exception.
*
* @return Folder selected folder.
* @throws NoItemSelectedException If no folder is currently selected.
*/
public Folder getSelectedFolder() throws NoItemSelectedException {
if (treeViewer.getSelection() instanceof IStructuredSelection) {
// System.out.println("selected item is istructuredselection");
IStructuredSelection selection = (IStructuredSelection) treeViewer.getSelection();
Object o = selection.getFirstElement();
if (o instanceof Folder) {
// if selection is a folder, just return it
Folder f = (Folder) o;
return f;
}
if (o instanceof Feed) {
Feed f = (Feed) o;
// if its a feed thats not the trash/outbox, then return its parent
try {
if (f.getId() != control.getTrash().getId()
&& f.getId() != control.getOutbox().getId()) // FOLDER MAGIC
return (Folder) treeViewer.getTree().getSelection()[0].getParentItem().getData();
} catch (ControlException e) {
}
}
}
throw new NoItemSelectedException("No Folder Selected");
}