[API] Add internal ImGuiItemFlags api

imgui-binding/src/main/java/imgui/internal/ImGui.java

@@ -11,6 +11,16 @@ public final class ImGui extends imgui.ImGui {
         #include <imgui_internal.h>
      */
 
+    // Basic Helpers for widget code
+
+    public static native void pushItemFlag(int imGuiItemFlags, boolean enabled); /*
+        ImGui::PushItemFlag(imGuiItemFlags, enabled);
+    */
+
+    public static native void popItemFlag(); /*
+        ImGui::PopItemFlag();
+    */
+
     // Docking - Builder function needs to be generally called before the node is used/submitted.
     // - The DockBuilderXXX functions are designed to _eventually_ become a public API, but it is too early to expose it and guarantee stability.
     // - Do not hold on ImGuiDockNode* pointers! They may be invalidated by any split/merge/remove operation and every frame.

imgui-binding/src/main/java/imgui/internal/flag/ImGuiItemFlags.java

@@ -0,0 +1,36 @@
+package imgui.internal.flag;
+
+/**
+ * Transient per-window flags, reset at the beginning of the frame. For child window, inherited from parent on first Begin().
+ * This is going to be exposed in imgui.h when stabilized enough.
+ */
+public final class ImGuiItemFlags {
+    private ImGuiItemFlags() {
+    }
+
+    public static final int None = 0;
+    public static final int NoTabStop = 1;
+    /**
+     * Button() will return true multiple times based on io.KeyRepeatDelay and io.KeyRepeatRate settings.
+     */
+    public static final int ButtonRepeat = 1 << 1;
+    /**
+     * [BETA] Disable interactions but doesn't affect visuals yet. See github.com/ocornut/imgui/issues/211
+     */
+    public static final int Disabled = 1 << 2;
+    public static final int NoNav = 1 << 3;
+    public static final int NoNavDefaultFocus = 1 << 4;
+    /**
+     * MenuItem/Selectable() automatically closes current Popup window
+     */
+    public static final int SelectableDontClosePopup = 1 << 5;
+    /**
+     * [BETA] Represent a mixed/indeterminate value, generally multi-selection where values differ.
+     * Currently only supported by Checkbox() (later should support all sorts of widgets)
+     */
+    public static final int MixedValue = 1 << 6;
+    /**
+     * [ALPHA] Allow hovering interactions but underlying value is not changed.
+     */
+    public static final int ReadOnly = 1 << 7;
+}