imgui_tabs.h

#include "imgui.h"

typedef int ImGuiTabBarFlags;
typedef int ImGuiTabItemFlags;

namespace ImGui
{

IMGUI_API void          ShutdownTabs();
IMGUI_API void          BeginTabBar(const char* str_id, ImGuiTabBarFlags flags = 0);
IMGUI_API void          EndTabBar();
IMGUI_API bool          TabItem(const char* label, bool* p_open = NULL, ImGuiTabItemFlags = 0);

// FIXME-WIP: Obsolete API
IMGUI_API void          SetTabItemClosed(const char* label);
IMGUI_API void          SetTabItemSelected(const char* label);

IMGUI_API void          ShowTabsDemo(const char* title, bool* p_open = NULL);
IMGUI_API void          ShowTabsDebug();

};

enum ImGuiTabBarFlags_
{
    ImGuiTabBarFlags_None                           = 0,
    ImGuiTabBarFlags_NoAnim                         = 1 << 0,   // Disable horizontal and vertical sliding animations
    ImGuiTabBarFlags_NoReorder                      = 1 << 1,
    ImGuiTabBarFlags_NoCloseWithMiddleMouseButton   = 1 << 2,   // Disable behavior of closing tabs (that are submitted with p_open != NULL) with middle mouse button. You can still repro this behavior on user's side with if (IsItemHovered() && IsMouseClicked(2)) *p_open = false.
    ImGuiTabBarFlags_NoResetOrderOnAppearing        = 1 << 3,
    ImGuiTabBarFlags_NoSelectionOnAppearing         = 1 << 4,   // Do not become automatically selected when appearing
    ImGuiTabBarFlags_SizingPolicyFit                = 1 << 5,
    ImGuiTabBarFlags_SizingPolicyEqual              = 1 << 6,

    ImGuiTabBarFlags_SizingPolicyMask_              = ImGuiTabBarFlags_SizingPolicyFit | ImGuiTabBarFlags_SizingPolicyEqual,
    ImGuiTabBarFlags_SizingPolicyDefault_           = ImGuiTabBarFlags_SizingPolicyFit
};

enum ImGuiTabItemFlags_
{
    ImGuiTabItemFlags_None                          = 0,
    ImGuiTabItemFlags_UnsavedDocument               = 1 << 0,   // Automatically append an '*' to the label without affecting the ID, as a convenience to avoid using ### operator everywhere.
    ImGuiTabItemFlags_SetSelected                   = 1 << 1    // Trigger flag to programatically make the tab selected when calling TabItem()
};