private void updateItems(final FileInfo parent) {
if (fDisplay == null) return;
assert Thread.currentThread() == fDisplay.getThread();
TreeItem[] items = null;
boolean expanded = true;
if (parent.children == null || parent.children_error != null) {
if (parent == fRootInfo) {
fileTree.setItemCount(1);
items = fileTree.getItems();
} else {
TreeItem item = findItem(parent);
if (item == null) return;
expanded = item.getExpanded();
item.setItemCount(1);
items = item.getItems();
}
assert items.length == 1;
items[0].removeAll();
if (parent.children_pending) {
items[0].setForeground(fDisplay.getSystemColor(SWT.COLOR_LIST_FOREGROUND));
items[0].setText("Pending...");
} else if (parent.children_error != null) {
String msg = parent.children_error.getMessage();
if (msg == null) msg = parent.children_error.getClass().getName();
else msg = msg.replace('\n', ' ');
items[0].setForeground(fDisplay.getSystemColor(SWT.COLOR_RED));
items[0].setText(msg);
items[0].setImage((Image) null);
} else if (expanded) {
loadChildren(parent);
items[0].setForeground(fDisplay.getSystemColor(SWT.COLOR_LIST_FOREGROUND));
items[0].setText("Pending...");
} else {
items[0].setText("");
}
} else {
FileInfo[] arr = parent.children;
if (parent == fRootInfo) {
fileTree.setItemCount(arr.length);
items = fileTree.getItems();
} else {
TreeItem item = findItem(parent);
if (item == null) return;
expanded = item.getExpanded();
item.setItemCount(expanded ? arr.length : 1);
items = item.getItems();
}
if (expanded) {
assert items.length == arr.length;
for (int i = 0; i < items.length; i++) fillItem(items[i], arr[i]);
expandSelect();
} else {
items[0].setText("");
}
}
}
@Override
public void setSources(String... sources) {
TreeItem[] items = tree.getSelection();
if (items.length < 1) return;
TreeItem item = items[0];
if (lastSelectedItem == item) return;
if (lastSelectedItem != null && !lastSelectedItem.isDisposed()) {
lastSelectedItem.setBackground(new Color(getDisplay(), 255, 255, 255));
lastSelectedItem.setExpanded(false);
lastSelectedItem.removeAll();
}
lastSelectedItem = item;
lastSelectedItem.setBackground(new Color(getDisplay(), 190, 190, 255));
if (sources == null || sources.length < 1) return;
for (String source : sources) {
item = new TreeItem(lastSelectedItem, SWT.NONE);
item.setFont(UIDATA.FONT_9);
int idx = source.indexOf('.');
if (idx > -1) source = source.substring(idx + 1);
item.setText(source);
}
if (!lastSelectedItem.getExpanded()) lastSelectedItem.setExpanded(true);
}
static TreeItem NextItem(Tree tree, TreeItem item) {
if (item == null) return null;
if (item.getExpanded()) {
return item.getItem(0);
} else {
TreeItem childItem = item;
TreeItem parentItem = childItem.getParentItem();
int index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem);
int count = parentItem == null ? tree.getItemCount() : parentItem.getItemCount();
while (true) {
if (index + 1 < count) {
return parentItem == null ? tree.getItem(index + 1) : parentItem.getItem(index + 1);
} else {
if (parentItem == null) {
return null;
} else {
childItem = parentItem;
parentItem = childItem.getParentItem();
index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem);
count = parentItem == null ? tree.getItemCount() : parentItem.getItemCount();
}
}
}
}
}
private void addRow(
TreeItem item,
List<String[]> rowData,
IXViewerLabelProvider labelProv,
List<XViewerColumn> showCols,
int level)
throws XViewerException {
List<String> cellData = new ArrayList<String>(showCols.size());
boolean firstCell = true;
for (XViewerColumn xCol : showCols) {
StringBuffer str = new StringBuffer();
if (firstCell) {
for (int y = 1; y < level; y++) {
str.append("__INSERT_TAB_HERE__"); // $NON-NLS-1$
}
firstCell = false;
}
str.append(labelProv.getColumnText(item.getData(), xColToColumnIndex.get(xCol)));
String html = HtmlUtil.textToHtml(str.toString());
html =
html.replaceAll(
"__INSERT_TAB_HERE__", " "); // $NON-NLS-1$ //$NON-NLS-2$
cellData.add(html);
}
rowData.add(cellData.toArray(new String[cellData.size()]));
if (item.getExpanded()) {
for (TreeItem i : item.getItems()) {
addRow(i, rowData, labelProv, showCols, level + 1);
}
}
}
/**
* Expands subtrees of given items. Items of type <code>PluginExtensionNode</code> that have
* multiple children to expand will only be expanded to the that level. Further expanding is
* required to reveal the whole subtree. This is for reasons of convenience.
*
* @param items tree items to be expand with their children
*/
private void traverseChildrenAndSetExpanded(TreeItem[] items) {
for (int i = 0; i < items.length; i++) {
TreeItem treeItem = items[i];
TreeItem[] children = treeItem.getItems();
int extensionsChildCount = getExtensionsChildCount((IPluginParent) treeItem.getData());
boolean furtherExpanding = !(extensionsChildCount > 1 && (!treeItem.getExpanded()));
treeItem.setExpanded(furtherExpanding);
if (furtherExpanding) {
traverseChildrenAndSetExpanded(children);
}
}
}
static TreeItem PreviousItem(Tree tree, TreeItem item) {
if (item == null) return null;
TreeItem childItem = item;
TreeItem parentItem = childItem.getParentItem();
int index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem);
if (index == 0) {
return parentItem;
} else {
TreeItem nextItem =
parentItem == null ? tree.getItem(index - 1) : parentItem.getItem(index - 1);
int count = nextItem.getItemCount();
while (count > 0 && nextItem.getExpanded()) {
nextItem = nextItem.getItem(count - 1);
count = nextItem.getItemCount();
}
return nextItem;
}
}
/**
* @param items items to be traversed
* @return <code>true</code> if at least one of the tree items could be expanded but is not.
* Otherwise <code>false</code> is returned.
*/
protected boolean traverseStateChangeRequired(TreeItem[] items) {
if (items != null) {
for (int i = 0; i < items.length; i++) {
TreeItem treeItem = items[i];
TreeItem[] children = treeItem.getItems();
if (children.length > 0) {
if (treeItem.getExpanded()) {
if (traverseStateChangeRequired(children)) {
return true;
}
} else {
return true;
}
}
}
}
return false;
}
@Override
public void handleTreeCollapse(TreeEvent event) {
super.handleTreeCollapse(event);
for (SynchronizedTreeViewer viewer : synchronizedViewers) {
TreeItem otherItem = getMatchingItem(event.item.getData(), viewer);
if (otherItem != null) {
if (otherItem.getExpanded()) {
Event rawEvent = new Event();
rawEvent.doit = true;
rawEvent.widget = viewer.getTree();
rawEvent.display = event.display;
TreeEvent otherEvent = new TreeEvent(rawEvent);
otherEvent.item = otherItem;
viewer.internalHandleTreeCollapse(otherEvent);
viewer.setExpanded(otherItem, false);
}
viewer.getTree().redraw();
}
}
}
/**
* Returns the host EditPart when appropriate. Targeting is done by checking if the mouse is
* clearly over the host's TreeItem.
*
* @see org.eclipse.gef.EditPolicy#getTargetEditPart(Request)
*/
public EditPart getTargetEditPart(Request req) {
if (req.getType().equals(REQ_ADD)
|| req.getType().equals(REQ_MOVE)
|| req.getType().equals(REQ_CREATE)) {
DropRequest drop = (DropRequest) req;
Point where = new Point(drop.getLocation().x, drop.getLocation().y);
Widget widget = ((TreeEditPart) getHost()).getWidget();
if (widget instanceof Tree) return getHost();
TreeItem treeitem = (TreeItem) widget;
Rectangle bounds = treeitem.getBounds();
int fudge = bounds.height / 5;
Rectangle inner =
new Rectangle(
bounds.x,
bounds.y + fudge,
bounds.width,
bounds.height - (treeitem.getExpanded() ? 0 : fudge * 2));
// Point is either outside the Treeitem, or inside the inner Rect.
if (!bounds.contains(where) || inner.contains(where)) return getHost();
}
return null;
}
/**
* Flips the TreeItem from expanded to not expanded or vice-versa.
*
* @param ti The TreeItem to flip.
*/
public static final void flipExpanded(TreeItem ti) {
ti.setExpanded(!ti.getExpanded());
}
protected void highlightDifferences(GC gc) {
// if the differencer is null then we are currently
// in the middle of a content update, skip this paint
// request
if (mergeViewer.getDifferencer() == null) {
return;
}
gc.setAdvanced(true);
gc.setAntialias(SWT.ON);
Tree tree = getTree();
List<TreeDifference> differences = mergeViewer.getDifferencer().getLeftDifferences();
if (mergeViewer.getLeftViewer() != this && mergeViewer.getAncestorTree() != this) {
differences = mergeViewer.getDifferencer().getRightDifferences();
}
for (TreeDifference difference : differences) {
if (differenceIsGraphical(difference)) {
// we do not include graphical differences
// at this time
continue;
}
gc.setForeground(
getMergeViewer()
.getColor(
PlatformUI.getWorkbench().getDisplay(),
getMergeViewer().getStrokeColor(difference)));
TreeItem item = getItemForDifference(difference);
if (item == null || item.isDisposed()) {
continue;
}
Rectangle highlightBounds =
buildHighlightRectangle(
item, difference.getIncludeChildren() && item.getExpanded(), gc, false, true);
Rectangle itemBounds = buildHighlightRectangle(item, false, gc, false, true);
boolean itemMatchesDifference = difference.getElement().equals(item.getData());
if (!itemMatchesDifference && !(item.getData() instanceof EmptyElement)) {
gc.setLineDash(new int[] {3});
gc.setLineStyle(SWT.LINE_CUSTOM);
} else {
gc.setLineStyle(SWT.LINE_SOLID);
}
gc.drawRoundRectangle(
highlightBounds.x,
highlightBounds.y,
highlightBounds.width,
highlightBounds.height,
5,
5);
if (mergeViewer.getLeftViewer() == this) {
gc.drawLine(
highlightBounds.x + highlightBounds.width,
highlightBounds.y + (itemBounds.height / 2),
tree.getClientArea().x + tree.getClientArea().width,
highlightBounds.y + (itemBounds.height / 2));
} else {
gc.drawLine(
highlightBounds.x,
highlightBounds.y + (itemBounds.height / 2),
tree.getClientArea().x,
highlightBounds.y + (itemBounds.height / 2));
}
gc.setLineStyle(SWT.LINE_SOLID);
}
}