IceCreamSandwichThemeHelper.java

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// -*- mode: java; c-basic-offset: 2; -*-
// Copyright 2018-2020 MIT, All rights reserved
// Released under the Apache License, Version 2.0
// http://www.apache.org/licenses/LICENSE-2.0
 
package com.google.appinventor.components.runtime.util.theme;
 
import android.graphics.Color;
import android.text.Html;
import android.view.Window;
import androidx.appcompat.app.ActionBar;
import com.google.appinventor.components.runtime.AppInventorCompatActivity;
import com.google.appinventor.components.runtime.Form;
import com.google.appinventor.components.runtime.util.ErrorMessages;
import com.google.appinventor.components.runtime.util.ImageViewUtil;
 
public class IceCreamSandwichThemeHelper implements ThemeHelper {
 
  private final AppInventorCompatActivity activity;
 
  public IceCreamSandwichThemeHelper(AppInventorCompatActivity activity) {
    this.activity = activity;
  }
 
  @Override
  public void requestActionBar() {
    activity.getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
  }
 
  @Override
  public boolean setActionBarVisible(boolean visible) {
    ActionBar actionBar = activity.getSupportActionBar();
    if (actionBar == null) {
      if (activity instanceof Form) {
        ((Form) activity).dispatchErrorOccurredEvent((Form) activity, "ActionBar", ErrorMessages.ERROR_ACTIONBAR_NOT_SUPPORTED);
      }
      return false;
    } else if (visible) {
      actionBar.show();
    } else {
      actionBar.hide();
    }
    return true;
  }
 
  @Override
  public boolean hasActionBar() {
    return activity.getSupportActionBar() != null;
  }
 
  @Override
  public void setTitle(String title) {
    ActionBar actionBar = activity.getSupportActionBar();
    if (actionBar != null) {
      actionBar.setTitle(title);
    }
  }
 
  @Override
  public void setActionBarAnimation(boolean enabled) {
    ActionBar actionBar = activity.getSupportActionBar();
    if (actionBar != null) {
      actionBar.setShowHideAnimationEnabled(enabled);
    }
  }
 
  @Override
  public void setTitle(String title, boolean black) {
    ActionBar actionBar = activity.getSupportActionBar();
    if (actionBar != null) {
      if (black) {
        actionBar.setTitle(Html.fromHtml("<font color=\"black\">" + title + "</font>"));
        ImageViewUtil.setMenuButtonColor(activity, Color.BLACK);
      } else {
        actionBar.setTitle(title);
        ImageViewUtil.setMenuButtonColor(activity, Color.WHITE);
      }
    }
  }
}