tmf.ui: [bug 494974] Fix left panel click handling in timegraph in Linux

Clicking on the left panel in Linux currently deselects the
entry. This behavior is particularly egregious in the case of
UI unit tests.

Change-Id: I18fbe001c6b7325c6618e46c22f13ad976357abe
Signed-off-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/73998
Reviewed-by: Hudson CI
Reviewed-by: Patrick Tasse <patrick.tasse@gmail.com>
Tested-by: Patrick Tasse <patrick.tasse@gmail.com>

diff --git a/tmf/org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/tmf/ui/widgets/timegraph/TimeGraphCombo.java b/tmf/org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/tmf/ui/widgets/timegraph/TimeGraphCombo.java
index 1191865d4be26db9b2aa28d24064b7aee6b1e9cd..de2c062932a24ed642df070aa87c1f914fffc06a 100644 (file)
--- a/tmf/org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/tmf/ui/widgets/timegraph/TimeGraphCombo.java
+++ b/tmf/org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/tmf/ui/widgets/timegraph/TimeGraphCombo.java
@@ -611,15 +611,16 @@ public class TimeGraphCombo extends Composite {
 
         // prevent mouse button from selecting a filler tree item
         tree.addListener(SWT.MouseDown, event -> {
-            TreeItem treeItem = tree.getItem(new Point(event.x, event.y));
-            if (treeItem == null || treeItem.getData() == FILLER) {
+            List<TreeItem> treeItems = getVisibleExpandedItems(tree, false);
+            if (treeItems.isEmpty()) {
+                event.doit = false;
+                fTreeViewer.setSelection(new StructuredSelection());
+                fTimeGraphViewer.setSelection(null);
+                return;
+            }
+            TreeItem lastTreeItem = treeItems.get(treeItems.size() - 1);
+            if (event.y >= lastTreeItem.getBounds().y + lastTreeItem.getBounds().height) {
                 event.doit = false;
-                List<TreeItem> treeItems = getVisibleExpandedItems(tree, false);
-                if (treeItems.size() == 0) {
-                    fTreeViewer.setSelection(new StructuredSelection());
-                    fTimeGraphViewer.setSelection(null);
-                    return;
-                }
                 // this prevents from scrolling up when selecting
                 // the partially visible tree item at the bottom
                 tree.select(treeItems.get(treeItems.size() - 1));