first commit

src/main/java/de/lucas/litematica/gui/TextInputScreen.java

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+package de.lucas.litematica.gui;
+
+import net.minecraft.client.gui.GuiGraphics;
+import net.minecraft.client.gui.components.Button;
+import net.minecraft.client.gui.components.EditBox;
+import net.minecraft.client.gui.screens.Screen;
+import net.minecraft.network.chat.Component;
+import org.lwjgl.glfw.GLFW;
+
+import java.util.function.Consumer;
+
+/** Small dialog asking for one line of text (used for renaming). */
+public class TextInputScreen extends Screen {
+    private final Screen parent;
+    private final String initial;
+    private final Consumer<String> onConfirm;
+    private EditBox input;
+
+    public TextInputScreen(Screen parent, Component title, String initial, Consumer<String> onConfirm) {
+        super(title);
+        this.parent = parent;
+        this.initial = initial;
+        this.onConfirm = onConfirm;
+    }
+
+    @Override
+    protected void init() {
+        int cx = this.width / 2;
+        int y = this.height / 2 - 20;
+        this.input = new EditBox(this.font, cx - 100, y, 200, 20, this.title);
+        this.input.setMaxLength(128);
+        this.input.setValue(this.initial);
+        this.addRenderableWidget(this.input);
+        this.setInitialFocus(this.input);
+        this.addRenderableWidget(Button.builder(Component.translatable("gui.done"), b -> this.confirm())
+                .bounds(cx - 100, y + 28, 98, 20).build());
+        this.addRenderableWidget(Button.builder(Component.translatable("gui.cancel"), b -> this.onClose())
+                .bounds(cx + 2, y + 28, 98, 20).build());
+    }
+
+    private void confirm() {
+        String value = this.input.getValue().trim();
+        if (!value.isEmpty()) {
+            this.onConfirm.accept(value);
+        }
+        this.onClose();
+    }
+
+    @Override
+    public boolean keyPressed(int keyCode, int scanCode, int modifiers) {
+        if (keyCode == GLFW.GLFW_KEY_ENTER || keyCode == GLFW.GLFW_KEY_KP_ENTER) {
+            this.confirm();
+            return true;
+        }
+        return super.keyPressed(keyCode, scanCode, modifiers);
+    }
+
+    @Override
+    public void render(GuiGraphics graphics, int mouseX, int mouseY, float partialTick) {
+        super.render(graphics, mouseX, mouseY, partialTick);
+        graphics.drawCenteredString(this.font, this.title, this.width / 2, this.height / 2 - 40, 0xFFFFFF);
+    }
+
+    @Override
+    public void onClose() {
+        this.minecraft.setScreen(this.parent);
+    }
+}