2 files changed, 94 insertions, 0 deletions
diff --git a/src/main/java/gregtech/api/gui/GUIHost.java b/src/main/java/gregtech/api/gui/GUIHost.java
new file mode 100644
index 0000000000..bbb94317c4
--- /dev/null
+++ b/src/main/java/gregtech/api/gui/GUIHost.java
@@ -0,0 +1,56 @@
+package gregtech.api.gui;
+
+import java.util.Objects;
+
+import javax.annotation.Nonnull;
+
+import net.minecraft.item.ItemStack;
+
+import com.gtnewhorizons.modularui.api.screen.ITileWithModularUI;
+import com.gtnewhorizons.modularui.api.screen.ModularWindow;
+import com.gtnewhorizons.modularui.api.screen.UIBuildContext;
+
+public interface GUIHost extends ITileWithModularUI {
+
+    @Nonnull
+    @Override
+    default ModularWindow createWindow(UIBuildContext uiContext) {
+        Objects.requireNonNull(uiContext);
+        GUIProvider<?> gui = getGUI(uiContext);
+        return gui.openGUI(uiContext);
+    }
+
+    /**
+     * Width of the GUI when its being displayed
+     */
+    default int getWidth() {
+        return 170;
+    }
+
+    default int getHeight() {
+        return 192;
+    }
+
+    @Nonnull
+    GUIProvider<?> getGUI(@Nonnull UIBuildContext uiContext);
+
+    ItemStack getAsItem();
+
+    String getMachineName();
+
+    default boolean hasItemInput() {
+        return true;
+    }
+
+    default boolean hasItemOutput() {
+        return true;
+    }
+
+    default boolean hasFluidInput() {
+        return true;
+    }
+
+    default boolean hasFluidOutput() {
+        return true;
+    }
+}
diff --git a/src/main/java/gregtech/api/gui/GUIProvider.java b/src/main/java/gregtech/api/gui/GUIProvider.java
new file mode 100644
index 0000000000..6fec4aa52a
--- /dev/null
+++ b/src/main/java/gregtech/api/gui/GUIProvider.java
@@ -0,0 +1,38 @@
+package gregtech.api.gui;
+
+import java.util.Objects;
+
+import javax.annotation.Nonnull;
+
+import com.gtnewhorizons.modularui.api.screen.ModularWindow;
+import com.gtnewhorizons.modularui.api.screen.ModularWindow.Builder;
+import com.gtnewhorizons.modularui.api.screen.UIBuildContext;
+
+public abstract class GUIProvider<T extends GUIHost> {
+
+    @Nonnull
+    protected final T host;
+
+    public GUIProvider(@Nonnull T host) {
+        this.host = host;
+    }
+
+    @Nonnull
+    public ModularWindow openGUI(@Nonnull UIBuildContext uiContext) {
+        Builder builder = Objects.requireNonNull(ModularWindow.builder(host.getWidth(), host.getHeight()));
+        if (shouldBindPlayerInventory()) {
+            builder.bindPlayerInventory(uiContext.getPlayer());
+        }
+        attachSynchHandlers(builder, uiContext);
+        addWidgets(builder, uiContext);
+        return Objects.requireNonNull(builder.build());
+    }
+
+    protected abstract void attachSynchHandlers(@Nonnull Builder builder, @Nonnull UIBuildContext uiContext);
+
+    protected abstract void addWidgets(@Nonnull Builder builder, @Nonnull UIBuildContext uiContext);
+
+    protected boolean shouldBindPlayerInventory() {
+        return true;
+    }
+}