Improvements to the usability of the number entry widgets (Priority, Level Emitter, Craft Amount): (#4737)

- Fixed tab order
- Introduced focus state for corner buttons
- Allowed the player to enter any text, but add validation that only persist it if it is a valid number
- Enter will now confirm these dialogs and return to the previous dialog
- The text field is automatically focused and its contents are selected

src/main/java/appeng/fluids/client/gui/FluidLevelEmitterScreen.java

@@ -13,8 +13,6 @@ import appeng.client.gui.implementations.NumberEntryWidget;
 import appeng.client.gui.implementations.UpgradeableScreen;
 import appeng.client.gui.widgets.ServerSettingToggleButton;
 import appeng.core.localization.GuiText;
-import appeng.core.sync.network.NetworkHandler;
-import appeng.core.sync.packets.ConfigValuePacket;
 import appeng.fluids.client.gui.widgets.FluidSlotWidget;
 import appeng.fluids.container.FluidLevelEmitterContainer;
 
@@ -31,17 +29,24 @@ public class FluidLevelEmitterScreen extends UpgradeableScreen<FluidLevelEmitter
     public void init() {
         super.init();
 
-        this.level = new NumberEntryWidget(this, 20, 17, 138, 62, NumberEntryType.LEVEL_FLUID_VOLUME,
-                this::onLevelChange);
+        this.level = new NumberEntryWidget(this, 20, 17, 138, 62, NumberEntryType.LEVEL_FLUID_VOLUME);
         this.level.setTextFieldBounds(25, 44, 75);
-        container.setTextField(this.level);
         this.level.addButtons(children::add, this::addButton);
+        this.level.setValue(container.getReportingValue());
+        this.level.setOnChange(this::saveReportingValue);
+        this.level.setOnConfirm(this::closeScreen);
+
+        this.changeFocus(true);
 
         final int y = 40;
         final int x = 80 + 57;
         this.guiSlots.add(new FluidSlotWidget(this.container.getFluidConfigInventory(), 0, 0, x, y));
     }
 
+    private void saveReportingValue() {
+        this.level.getLongValue().ifPresent(container::setReportingValue);
+    }
+
     @Override
     protected void addButtons() {
         this.redstoneMode = new ServerSettingToggleButton<>(this.guiLeft - 18, this.guiTop + 28,
@@ -82,8 +87,4 @@ public class FluidLevelEmitterScreen extends UpgradeableScreen<FluidLevelEmitter
     protected void handleButtonVisibility() {
     }
 
-    private void onLevelChange(long level) {
-        NetworkHandler.instance().sendToServer(new ConfigValuePacket("FluidLevelEmitter.Value", String.valueOf(level)));
-    }
-
 }