package com.example.tutorial;

import android.annotation.TargetApi;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Typeface;
import android.os.Build;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.TextView;

import java.util.HashMap;

/**
 * Created by Shiburagi on 28-Jan-15.
 */
public class CustomTextView extends TextView {
    private static final String TAG = "TextView";
    private final static HashMap<String, Typeface> fonts;

    static {
        fonts = new HashMap<String, Typeface>();
    }

    /**
     * Default Constructor
     * @param context
     */
    public CustomTextView(Context context) {
        super(context);
    }

    /**
     * Overload Constructor
     * @param context
     * @param attrs
     */
    public CustomTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
        setFont(context, attrs);
    }

    /**
     * Overload Constructor
     * @param context
     * @param attrs
     * @param defStyleAttr
     */
    public CustomTextView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        setFont(context, attrs);
    }

    /**
     * Overload Constructor
     * @param context
     * @param attrs
     * @param defStyleAttr
     * @param defStyleRes
     */
    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public CustomTextView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
        setFont(context, attrs);
    }

    /**
     * set font according font attribute been defined in XML layout
     * @param context
     * @param attrs
     */
    private void setFont(Context context, AttributeSet attrs) {

        // get All attribute of CustomTextView in xml file
        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CustomTextView);

        // get font name from <something>:font attribute
        String font = a.getString(R.styleable.CustomTextView_font);
        setFont(context, font);

        a.recycle();
    }

    /**
     * set font for this TextView.
     * @param context
     * @param asset
     * @return
     */
    public boolean setFont(Context context, String asset) {
        Typeface typeface = null;
        String directory="fonts/";
        try {

            // if the font not exist yet, then create it and store in HashMap fonts
            // otherwise, just call it back.
            if(!fonts.containsKey(asset)){
                typeface = Typeface.createFromAsset(context.getAssets(),directory.concat(asset));
                fonts.put(asset,typeface);
            }else{
                typeface = fonts.get(asset);
            }

        } catch (Exception e) {
            Log.e(TAG, "Could not get typeface: " + e.getMessage());
            return false;
        }

        // set custom font
        setTypeface(typeface);
        return true;
    }
}