Add editor panel content host contract

new_editor/include/XCEditor/Core/UIEditorPanelContentHost.h

@@ -0,0 +1,88 @@
+#pragma once
+
+#include <XCEditor/Core/UIEditorPanelRegistry.h>
+#include <XCEditor/Widgets/UIEditorDockHost.h>
+
+#include <cstdint>
+#include <string>
+#include <string_view>
+#include <vector>
+
+namespace XCEngine::UI::Editor {
+
+enum class UIEditorPanelContentHostEventKind : std::uint8_t {
+    Mounted = 0,
+    Unmounted,
+    BoundsChanged
+};
+
+std::string_view GetUIEditorPanelContentHostEventKindName(
+    UIEditorPanelContentHostEventKind kind);
+
+bool IsUIEditorPanelPresentationExternallyHosted(UIEditorPanelPresentationKind kind);
+
+struct UIEditorPanelContentHostBinding {
+    std::string panelId = {};
+    UIEditorPanelPresentationKind kind = UIEditorPanelPresentationKind::Placeholder;
+};
+
+struct UIEditorPanelContentHostMountRequest {
+    std::string panelId = {};
+    UIEditorPanelPresentationKind kind = UIEditorPanelPresentationKind::Placeholder;
+    ::XCEngine::UI::UIRect bounds = {};
+};
+
+struct UIEditorPanelContentHostRequest {
+    std::vector<UIEditorPanelContentHostMountRequest> mountRequests = {};
+};
+
+struct UIEditorPanelContentHostPanelState {
+    std::string panelId = {};
+    UIEditorPanelPresentationKind kind = UIEditorPanelPresentationKind::Placeholder;
+    bool mounted = false;
+    ::XCEngine::UI::UIRect bounds = {};
+};
+
+struct UIEditorPanelContentHostState {
+    std::vector<UIEditorPanelContentHostPanelState> panelStates = {};
+};
+
+struct UIEditorPanelContentHostEvent {
+    UIEditorPanelContentHostEventKind kind = UIEditorPanelContentHostEventKind::Mounted;
+    std::string panelId = {};
+    UIEditorPanelPresentationKind presentationKind = UIEditorPanelPresentationKind::Placeholder;
+    ::XCEngine::UI::UIRect bounds = {};
+};
+
+struct UIEditorPanelContentHostFrame {
+    std::vector<UIEditorPanelContentHostPanelState> panelStates = {};
+    std::vector<UIEditorPanelContentHostEvent> events = {};
+};
+
+const UIEditorPanelContentHostMountRequest* FindUIEditorPanelContentHostMountRequest(
+    const UIEditorPanelContentHostRequest& request,
+    std::string_view panelId);
+
+const UIEditorPanelContentHostPanelState* FindUIEditorPanelContentHostPanelState(
+    const UIEditorPanelContentHostState& state,
+    std::string_view panelId);
+
+const UIEditorPanelContentHostPanelState* FindUIEditorPanelContentHostPanelState(
+    const UIEditorPanelContentHostFrame& frame,
+    std::string_view panelId);
+
+UIEditorPanelContentHostRequest ResolveUIEditorPanelContentHostRequest(
+    const Widgets::UIEditorDockHostLayout& dockHostLayout,
+    const UIEditorPanelRegistry& panelRegistry,
+    const std::vector<UIEditorPanelContentHostBinding>& bindings);
+
+UIEditorPanelContentHostFrame UpdateUIEditorPanelContentHost(
+    UIEditorPanelContentHostState& state,
+    const UIEditorPanelContentHostRequest& request,
+    const UIEditorPanelRegistry& panelRegistry,
+    const std::vector<UIEditorPanelContentHostBinding>& bindings);
+
+std::vector<std::string> CollectMountedUIEditorPanelContentHostPanelIds(
+    const UIEditorPanelContentHostFrame& frame);
+
+} // namespace XCEngine::UI::Editor

new_editor/include/XCEditor/Core/UIEditorPanelRegistry.h

@@ -9,7 +9,8 @@ namespace XCEngine::UI::Editor {
 
 enum class UIEditorPanelPresentationKind : std::uint8_t {
     Placeholder = 0,
-    ViewportShell
+    ViewportShell,
+    HostedContent
 };
 
 struct UIEditorPanelDescriptor {

new_editor/include/XCEditor/Core/UIEditorWorkspaceCompose.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <XCEditor/Core/UIEditorPanelContentHost.h>
 #include <XCEditor/Core/UIEditorPanelRegistry.h>
 #include <XCEditor/Core/UIEditorViewportShell.h>
 #include <XCEditor/Core/UIEditorWorkspaceSession.h>
@@ -25,6 +26,7 @@ struct UIEditorWorkspacePanelPresentationState {
 };
 
 struct UIEditorWorkspaceComposeState {
+    UIEditorPanelContentHostState contentHostState = {};
     std::vector<UIEditorWorkspacePanelPresentationState> panelStates = {};
 };
 
@@ -36,6 +38,7 @@ struct UIEditorWorkspaceViewportComposeRequest {
 
 struct UIEditorWorkspaceComposeRequest {
     Widgets::UIEditorDockHostLayout dockHostLayout = {};
+    UIEditorPanelContentHostRequest contentHostRequest = {};
     std::vector<UIEditorWorkspaceViewportComposeRequest> viewportRequests = {};
 };
 
@@ -48,6 +51,7 @@ struct UIEditorWorkspaceViewportComposeFrame {
 
 struct UIEditorWorkspaceComposeFrame {
     Widgets::UIEditorDockHostLayout dockHostLayout = {};
+    UIEditorPanelContentHostFrame contentHostFrame = {};
     std::vector<UIEditorWorkspaceViewportComposeFrame> viewportFrames = {};
 };