MultiSelect: added courtesy ImGuiMultiSelectFlags_NavWrapX flag so we can demo this until a nav api is designed.

imgui.h

@@ -2781,6 +2781,7 @@ enum ImGuiMultiSelectFlags_
     ImGuiMultiSelectFlags_SelectOnClick         = 1 << 13,  // Apply selection on mouse down when clicking on unselected item. (Default)
     ImGuiMultiSelectFlags_SelectOnClickRelease  = 1 << 14,  // Apply selection on mouse release when clicking an unselected item. Allow dragging an unselected item without altering selection.
     //ImGuiMultiSelectFlags_RangeSelect2d       = 1 << 15,  // Shift+Selection uses 2d geometry instead of linear sequence, so possible to use Shift+up/down to select vertically in grid. Analogous to what BoxSelect does.
+    ImGuiMultiSelectFlags_NavWrapX              = 1 << 16,  // [Temporary] Enable navigation wrapping on X axis. Provided as a convenience because we don't have a design for the general Nav API for this yet. When the more general feature be public we may obsolete this flag in favor of new one.
 };
 
 // Main IO structure returned by BeginMultiSelect()/EndMultiSelect().

imgui_demo.cpp

@@ -9836,10 +9836,21 @@ struct ExampleAssetsBrowser
 
             // Multi-select
             ImGuiMultiSelectFlags ms_flags = ImGuiMultiSelectFlags_ClearOnEscape | ImGuiMultiSelectFlags_ClearOnClickVoid;
-            if (AllowDragUnselected)
+
-                ms_flags |= ImGuiMultiSelectFlags_SelectOnClickRelease; // To allow dragging an unselected item without altering selection.
+            // - Enable box-select (in 2D mode, so that changing box-select rectangle X1/X2 boundaries will affect clipped items)
             if (AllowBoxSelect)
-                ms_flags |= ImGuiMultiSelectFlags_BoxSelect2d; // Enable box-select in 2D mode.
+                ms_flags |= ImGuiMultiSelectFlags_BoxSelect2d;
+
+            // - This feature allows dragging an unselected item without selecting it (rarely used)
+            if (AllowDragUnselected)
+                ms_flags |= ImGuiMultiSelectFlags_SelectOnClickRelease;
+
+            // - Enable keyboard wrapping on X axis
+            // (FIXME-MULTISELECT: We haven't designed/exposed a general nav wrapping api yet, so this flag is provided as a courtesy to avoid doing:
+            //    ImGui::NavMoveRequestTryWrapping(ImGui::GetCurrentWindow(), ImGuiNavMoveFlags_WrapX);
+            // When we finish implementing a more general API for this, we will obsolete this flag in favor of the new system)
+            ms_flags |= ImGuiMultiSelectFlags_NavWrapX;
+
             ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(ms_flags, Selection.Size, Items.Size);
 
             // Use custom selection adapter: store ID in selection (recommended)
@@ -9970,10 +9981,6 @@ struct ExampleAssetsBrowser
             if (want_delete)
                 Selection.ApplyDeletionPostLoop(ms_io, Items, item_curr_idx_to_focus);
 
-            // Keyboard/Gamepad Wrapping
-            // FIXME-MULTISELECT: Currently an imgui_internal.h API. Find a design/way to expose this in public API.
-            //ImGui::NavMoveRequestTryWrapping(ImGui::GetCurrentWindow(), ImGuiNavMoveFlags_WrapX);
-
             // Zooming with CTRL+Wheel
             if (ImGui::IsWindowAppearing())
                 ZoomWheelAccum = 0.0f;

imgui_widgets.cpp

@@ -7479,6 +7479,13 @@ ImGuiMultiSelectIO* ImGui::EndMultiSelect()
             }
     }
 
+    // Courtesy nav wrapping helper flag
+    if (ms->Flags & ImGuiMultiSelectFlags_NavWrapX)
+    {
+        IM_ASSERT(ms->Flags & ImGuiMultiSelectFlags_ScopeWindow); // Only supported at window scope
+        ImGui::NavMoveRequestTryWrapping(ImGui::GetCurrentWindow(), ImGuiNavMoveFlags_WrapX);
+    }
+
     // Unwind
     window->DC.CursorMaxPos = ImMax(ms->BackupCursorMaxPos, window->DC.CursorMaxPos);
     PopFocusScope();