Ticket #8937: 0001-Stack-Tile-Add-option-left-right-shortcuts-to-switch.patch

src/servers/app/stackandtile/StackAndTile.cpp

@@ -129 +129 @@
         if (!wasPressed && fSATKeyPressed)
             _StartSAT();
     }
+    if ((modifiers & B_OPTION_KEY) == 0 || what != B_KEY_DOWN)
+        return false;
+
+    const int kArrowKeyLeft = 97;
+    const int kArrowKeyRight = 99;
+
+    switch (key) {
+        case kArrowKeyLeft:
+        case kArrowKeyRight:
+        {
+            SATWindow* frontWindow = GetSATWindow(fDesktop->FocusWindow());
+            SATGroup* currentGroup = NULL;
+            if (frontWindow)
+                currentGroup = frontWindow->GetGroup();
+            int groupSize = currentGroup->CountItems();
+            if (!currentGroup || groupSize <= 1)
+                return false;
+
+            for (int i = 0; i < groupSize; ++i) {
+                SATWindow* targetWindow = currentGroup->WindowAt(i);
+                if (targetWindow == frontWindow) {
+                    if (key == kArrowKeyLeft && i > 0) {
+                        targetWindow = currentGroup->WindowAt(i-1);
+                    } else if (key == kArrowKeyRight && i < groupSize-1) {
+                        targetWindow = currentGroup->WindowAt(i+1);
+                    }
+                    _ActivateWindow(targetWindow);
+                    return true;
+                }
+            }
+        }
+    }
+
 // switch off group navigation because it clashes with tracker...
 return false;
     if (!SATKeyPressed() || (modifiers & B_COMMAND_KEY) == 0