content: package net.minecraft.client.gui;
  
  import net.minecraft.client.resources.I18n;
  import net.minecraft.client.settings.GameSettings;
  
  import java.io.IOException;
  
  public class ScreenChatOptions extends GuiScreen {
      private static final GameSettings.Options[] field_146399_a = new GameSettings.Options[]{GameSettings.Options.CHAT_VISIBILITY, GameSettings.Options.CHAT_COLOR, GameSettings.Options.CHAT_LINKS, GameSettings.Options.CHAT_OPACITY, GameSettings.Options.CHAT_LINKS_PROMPT, GameSettings.Options.CHAT_SCALE, GameSettings.Options.CHAT_HEIGHT_FOCUSED, GameSettings.Options.CHAT_HEIGHT_UNFOCUSED, GameSettings.Options.CHAT_WIDTH, GameSettings.Options.REDUCED_DEBUG_INFO};
      private final GuiScreen parentScreen;
      private final GameSettings game_settings;
      private String field_146401_i;
  
      public ScreenChatOptions(GuiScreen parentScreenIn, GameSettings gameSettingsIn) {
          this.parentScreen = parentScreenIn;
          this.game_settings = gameSettingsIn;
      }
  
      public void initGui() {
          int i = 0;
          this.field_146401_i = I18n.format("options.chat.title");
  
          for (GameSettings.Options gamesettings$options : field_146399_a) {
              if (gamesettings$options.getEnumFloat()) {
                  this.buttonList.add(new GuiOptionSlider(gamesettings$options.returnEnumOrdinal(), this.width / 2 - 155 + i % 2 * 160, this.height / 6 + 24 * (i >> 1), gamesettings$options));
              } else {
                  this.buttonList.add(new GuiOptionButton(gamesettings$options.returnEnumOrdinal(), this.width / 2 - 155 + i % 2 * 160, this.height / 6 + 24 * (i >> 1), gamesettings$options, this.game_settings.getKeyBinding(gamesettings$options)));
              }
  
              ++i;
          }
  
          this.buttonList.add(new GuiButton(200, this.width / 2 - 100, this.height / 6 + 120, I18n.format("gui.done")));
      }
  
      protected void actionPerformed(GuiButton button) throws IOException {
          if (button.enabled) {
              if (button.id < 100 && button instanceof GuiOptionButton) {
                  this.game_settings.setOptionValue(((GuiOptionButton) button).returnEnumOptions(), 1);
                  button.displayString = this.game_settings.getKeyBinding(GameSettings.Options.getEnumOptions(button.id));
              }
  
              if (button.id == 200) {
                  this.mc.gameSettings.saveOptions();
                  this.mc.displayGuiScreen(this.parentScreen);
              }
          }
      }
  
      public void drawScreen(int mouseX, int mouseY, float partialTicks) {
          this.drawDefaultBackground();
          this.drawCenteredString(this.fontRendererObj, this.field_146401_i, this.width / 2, 20, 16777215);
          super.drawScreen(mouseX, mouseY, partialTicks);
      }
  }
  