TextSettingsOverflow.java

package com.airlocksoftware.hackernews.view;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.RelativeLayout;

import com.airlocksoftware.hackernews.R;
import com.airlocksoftware.hackernews.data.UserPrefs;
import com.airlocksoftware.hackernews.data.UserPrefs.Theme;
import com.airlocksoftware.hackernews.interfaces.RestartableActivity;
import com.airlocksoftware.holo.image.IconView;
import com.airlocksoftware.holo.type.FontFactory;

/**
 * Light/Dark theme & text size chooser that's added to the overflow menu. If a setting is changed, the activity needs
 * to restart.
 **/
public class TextSettingsOverflow extends RelativeLayout {

	Context mContext;
	RestartableActivity mRestart;

	UserPrefs mUserData;

	IconView mDay;
	IconView mNight;
	IconView mBigger;
	IconView mSmaller;

	// CONSTANTS
	private static final float MAX_SCALE_FACTOR = 1.375f;
	private static final float MIN_SCALE_FACTOR = 0.75f;
	private static final float SCALE_INCREMENT = 0.125f;
	private static final int LAYOUT = R.layout.vw_overflow_textsettings;

	private OnClickListener themeListener = new OnClickListener() {
		@Override
		public void onClick(View v) {
			UserPrefs data = new UserPrefs(mContext);
			if (v.getId() == R.id.icv_day_mode) data.setTheme(Theme.LIGHT);
			else if (v.getId() == R.id.icv_night_mode) data.setTheme(Theme.DARK);

			mRestart.restartActivity();
		}
	};

	private OnClickListener textSizeListener = new OnClickListener() {
		@Override
		public void onClick(View v) {

			float sf = FontFactory.getTextScaleFactor(mContext);

			if (v.getId() == R.id.icv_text_bigger && sf < MAX_SCALE_FACTOR) {
				FontFactory.saveTextScaleFactor(mContext, sf += SCALE_INCREMENT);
				((RestartableActivity) mContext).restartActivity();
			} else if (v.getId() == R.id.icv_text_smaller && sf > MIN_SCALE_FACTOR) {
				FontFactory.saveTextScaleFactor(mContext, sf -= SCALE_INCREMENT);
				mRestart.restartActivity();
			}

		}
	};

	public TextSettingsOverflow(Context context, RestartableActivity restart) {
		super(context, null);
		mContext = context;
		mRestart = restart;

		// inflate layout
		LayoutInflater.from(mContext)
									.inflate(LAYOUT, this);

		// set layout params
		LayoutParams params = new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
		setLayoutParams(params);

		// setup text settings
		mUserData = new UserPrefs(mContext);
		mDay = (IconView) findViewById(R.id.icv_day_mode);
		mNight = (IconView) findViewById(R.id.icv_night_mode);
		mBigger = (IconView) findViewById(R.id.icv_text_bigger);
		mSmaller = (IconView) findViewById(R.id.icv_text_smaller);

		mDay.setOnClickListener(themeListener);
		mNight.setOnClickListener(themeListener);
		mBigger.setOnClickListener(textSizeListener);
		mSmaller.setOnClickListener(textSizeListener);
	}

	public void refreshVisibility() {
		float sf = FontFactory.getTextScaleFactor(mContext);
		if (sf <= MIN_SCALE_FACTOR) {
			mSmaller.setVisibility(View.GONE);
			mBigger.setVisibility(View.VISIBLE);
		} else if (sf >= MAX_SCALE_FACTOR) {
			mSmaller.setVisibility(View.VISIBLE);
			mBigger.setVisibility(View.GONE);
		} else {
			mSmaller.setVisibility(View.VISIBLE);
			mBigger.setVisibility(View.VISIBLE);
		}

		if (mUserData.getTheme() == Theme.DARK) {
			mNight.setVisibility(View.GONE);
			mDay.setVisibility(View.VISIBLE);
		} else if (mUserData.getTheme() == Theme.LIGHT) {
			mNight.setVisibility(View.VISIBLE);
			mDay.setVisibility(View.GONE);
		}

	}

}