Seal editor host content binding boundary

editor/app/Windowing/Host/EditorWindowContentBindings.h

@@ -0,0 +1,77 @@
+#pragma once
+
+#include <XCEditor/Docking/UIEditorDockHostTransfer.h>
+#include <XCEditor/Windowing/Presentation/EditorWorkspaceWindowProjection.h>
+
+#include <cstdint>
+#include <string>
+#include <string_view>
+
+namespace XCEngine::UI {
+
+struct UIPoint;
+
+} // namespace XCEngine::UI
+
+namespace XCEngine::UI::Editor {
+
+namespace Widgets {
+struct UIEditorDockHostDropPreviewState;
+}
+
+} // namespace XCEngine::UI::Editor
+
+namespace XCEngine::UI::Editor::App {
+
+enum class EditorWindowContentCursorKind : std::uint8_t {
+    Arrow = 0,
+    ResizeEW,
+    ResizeNS,
+};
+
+class EditorWindowWorkspaceBinding {
+public:
+    virtual ~EditorWindowWorkspaceBinding() = default;
+
+    virtual const EditorWorkspaceWindowProjection* TryGetWorkspaceProjection() const = 0;
+    virtual void RefreshWorkspaceProjection(EditorWorkspaceWindowProjection projection) = 0;
+};
+
+class EditorWindowDockHostBinding {
+public:
+    virtual ~EditorWindowDockHostBinding() = default;
+
+    virtual void SetExternalDockHostDropPreview(
+        const Widgets::UIEditorDockHostDropPreviewState& preview) = 0;
+    virtual void ClearExternalDockHostDropPreview() = 0;
+    virtual bool TryResolveDockTabDragHotspot(
+        std::string_view nodeId,
+        std::string_view panelId,
+        const ::XCEngine::UI::UIPoint& point,
+        ::XCEngine::UI::UIPoint& outHotspot) const = 0;
+    virtual UIEditorDockHostTabDropTarget ResolveDockTabDropTarget(
+        const ::XCEngine::UI::UIPoint& point) const = 0;
+};
+
+class EditorWindowInputFeedbackBinding {
+public:
+    virtual ~EditorWindowInputFeedbackBinding() = default;
+
+    virtual bool HasHostedContentCapture() const = 0;
+    virtual bool HasShellInteractiveCapture() const = 0;
+    virtual bool HasInteractiveCapture() const = 0;
+    virtual EditorWindowContentCursorKind GetHostedContentCursorKind() const = 0;
+    virtual EditorWindowContentCursorKind GetDockCursorKind() const = 0;
+};
+
+class EditorWindowTitleBarBinding {
+public:
+    virtual ~EditorWindowTitleBarBinding() = default;
+
+    virtual bool ShouldUseDetachedTitleBarTabStrip() const = 0;
+    virtual std::string ResolveTabStripTitleText(std::string_view fallbackTitle) const = 0;
+    virtual std::string ResolveDetachedWindowTitleText(
+        std::string_view fallbackWindowTitle) const = 0;
+};
+
+} // namespace XCEngine::UI::Editor::App