Test ime blocker

Author: kappa-maintainer

src/main/java/com/cleanroommc/client/IMEHandler.java

@@ -1,7 +1,20 @@
 package com.cleanroommc.client;
 
+import com.cleanroommc.client.ime.WindowsIMEHandler;
+import net.minecraftforge.fml.common.FMLLog;
+import org.lwjgl.glfw.GLFW;
+
+import java.util.function.Consumer;
+
 public class IMEHandler {
+    private static Consumer<Boolean> instance;
+    static {
+        switch (GLFW.glfwGetPlatform()) {
+            case GLFW.GLFW_PLATFORM_WIN32 -> instance = new WindowsIMEHandler();
+            default -> FMLLog.log.warn("Unsupported platform: " + GLFW.glfwGetPlatform());
+        }
+    }
     public static void setIME(boolean active) {
-
+        instance.accept(active);
     }
 }

src/main/java/com/cleanroommc/client/ime/CocoaIMEHandler.java

@@ -0,0 +1,13 @@
+package com.cleanroommc.client.ime;
+
+import com.sun.jna.Pointer;
+
+import java.util.function.Consumer;
+
+public class CocoaIMEHandler implements Consumer<Boolean> {
+
+    @Override
+    public void accept(Boolean aBoolean) {
+
+    }
+}

src/main/java/com/cleanroommc/client/ime/DummyIMEHandler.java

@@ -0,0 +1,10 @@
+package com.cleanroommc.client.ime;
+
+import java.util.function.Consumer;
+
+public class DummyIMEHandler implements Consumer<Boolean> {
+    @Override
+    public void accept(Boolean aBoolean) {
+
+    }
+}

src/main/java/com/cleanroommc/client/ime/WindowsIMEHandler.java

@@ -0,0 +1,44 @@
+package com.cleanroommc.client.ime;
+
+import com.sun.jna.Native;
+import com.sun.jna.platform.win32.User32;
+import com.sun.jna.platform.win32.WinDef;
+import com.sun.jna.platform.win32.WinNT;
+
+import java.util.function.Consumer;
+import java.util.function.Supplier;
+
+public class WindowsIMEHandler implements Consumer<Boolean> {
+
+    private static native WinNT.HANDLE ImmGetContext(WinDef.HWND hwnd);
+    private static native WinNT.HANDLE ImmAssociateContext(WinDef.HWND hwnd, WinNT.HANDLE himc);
+    private static native boolean ImmReleaseContext(WinDef.HWND hwnd, WinNT.HANDLE himc);
+    private static native WinNT.HANDLE ImmCreateContext();
+    private static native boolean ImmDestroyContext(WinNT.HANDLE himc);
+
+    static {
+        Native.register("imm32");
+    }
+
+    User32 user32 = User32.INSTANCE;
+
+    @Override
+    public void accept(Boolean active) {
+        WinDef.HWND hwnd = user32.GetForegroundWindow();
+        WinNT.HANDLE himc;
+        if (active) {
+            himc = ImmGetContext(hwnd);
+            if (himc == null) {
+                himc = ImmCreateContext();
+                ImmAssociateContext(hwnd, himc);
+            }
+        } else {
+            himc = ImmAssociateContext(hwnd, null);
+            if (himc != null) {
+                ImmDestroyContext(himc);
+            }
+        }
+        ImmReleaseContext(hwnd, himc);
+    }
+
+}