Extract editor interaction states

editor/src/UI/PopupState.h

@@ -27,6 +27,10 @@ public:
         return m_openRequested;
     }
 
+    void Clear() {
+        m_openRequested = false;
+    }
+
 private:
     bool m_openRequested = false;
 };
@@ -77,6 +81,76 @@ private:
     char m_buffer[BufferCapacity] = {};
 };
 
+template <typename ItemId, size_t BufferCapacity>
+class InlineTextEditState {
+public:
+    void Begin(ItemId itemId, const char* initialValue = "") {
+        m_active = true;
+        m_itemId = itemId;
+        SetValue(initialValue);
+        m_focusRequested = true;
+    }
+
+    bool IsActive() const {
+        return m_active;
+    }
+
+    bool IsEditing(ItemId itemId) const {
+        return m_active && m_itemId == itemId;
+    }
+
+    ItemId Item() const {
+        return m_itemId;
+    }
+
+    bool ConsumeFocusRequest() {
+        if (!m_focusRequested) {
+            return false;
+        }
+
+        m_focusRequested = false;
+        return true;
+    }
+
+    void SetValue(const char* value) {
+        if (value && value[0] != '\0') {
+            strcpy_s(m_buffer, value);
+            return;
+        }
+
+        m_buffer[0] = '\0';
+    }
+
+    bool Empty() const {
+        return m_buffer[0] == '\0';
+    }
+
+    char* Buffer() {
+        return m_buffer;
+    }
+
+    const char* Buffer() const {
+        return m_buffer;
+    }
+
+    constexpr size_t BufferSize() const {
+        return BufferCapacity;
+    }
+
+    void Cancel() {
+        m_active = false;
+        m_itemId = ItemId{};
+        m_buffer[0] = '\0';
+        m_focusRequested = false;
+    }
+
+private:
+    bool m_active = false;
+    ItemId m_itemId = ItemId{};
+    char m_buffer[BufferCapacity] = {};
+    bool m_focusRequested = false;
+};
+
 } // namespace UI
 } // namespace Editor
 } // namespace XCEngine