Samples.java

package tk.zielony.carbonsamples;

import android.app.Activity;
import android.content.Context;
import android.graphics.Typeface;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.style.ForegroundColorSpan;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.annimon.stream.Stream;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import carbon.Carbon;
import carbon.dialog.Dialog;
import carbon.internal.DebugOverlay;
import carbon.widget.CheckBox;
import carbon.widget.ImageView;
import carbon.widget.TextView;
import carbon.widget.Toolbar;

public class Samples {
    private Samples() {
    }

    public static void initToolbar(final Activity activity, String title) {
        final DebugOverlay overlay = new DebugOverlay(activity);

        Toolbar toolbar = (Toolbar) activity.findViewById(R.id.toolbar);
        toolbar.setTitle(title);

        final ImageView debug = (ImageView) activity.findViewById(R.id.debug);
        if (debug != null) {
            debug.setTint(Carbon.getThemeColor(activity, R.attr.carbon_colorDisabled));
            debug.setOnClickListener(new View.OnClickListener() {
                boolean debugEnabled = false;

                @Override
                public void onClick(View view) {
                    if (!debugEnabled) {
                        debug.setTint(Carbon.getThemeColor(activity, R.attr.carbon_iconColor));
                        overlay.show();
                        debugEnabled = true;
                    } else {
                        debug.setTint(Carbon.getThemeColor(activity, R.attr.carbon_colorDisabled));
                        overlay.dismiss();
                        debugEnabled = false;
                    }
                }
            });
        }

        CheckBox checkBox = (CheckBox) activity.findViewById(R.id.enabled);
        if (checkBox != null) {
            checkBox.setOnCheckedChangeListener((compoundButton, checked) -> {
                List<View> views = findViewsWithTag((ViewGroup) activity.getWindow().getDecorView().getRootView(), "enable");
                for (View v : views)
                    v.setEnabled(checked);
            });
        }
    }

    private static List<View> findViewsWithTag(ViewGroup start, Object tag) {
        List<View> result = new ArrayList<>();
        List<ViewGroup> groups = new ArrayList<>();
        groups.add(start);
        while (!groups.isEmpty()) {
            ViewGroup group = groups.remove(0);
            for (int i = 0; i < group.getChildCount(); i++) {
                View child = group.getChildAt(i);
                if (tag.equals(child.getTag()))
                    result.add(child);
                if (child instanceof ViewGroup)
                    groups.add((ViewGroup) child);
            }
        }
        return result;
    }

    public static void showCodeDialog(Context context, String code) {
        Dialog dialog = new Dialog(context);
        ViewGroup content = (ViewGroup) LayoutInflater.from(context).inflate(R.layout.dialog_code, null);
        dialog.setContentView(content);
        TextView codeTV = (TextView) content.findViewById(R.id.code);
        codeTV.setText(Samples.colorSyntax(code));
        codeTV.setTypeface(Typeface.MONOSPACE);
        dialog.setTitle("Code");
        dialog.setPositiveButton("ok", null);
        dialog.show();
    }

    public static Spannable colorSyntax(String text) {
        SpannableStringBuilder builder = new SpannableStringBuilder(text);

        int quotedTextColor = 0xff388e3c;
        int keywordColor = 0xff0d47a1;

        Pattern pattern = Pattern.compile("\"([^\"]*)\"");
        Matcher matcher = pattern.matcher(text);
        while (matcher.find()) {
            builder.setSpan(new ForegroundColorSpan(quotedTextColor), matcher.start(), matcher.end(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
        }

        String[] keyword = new String[]{"carbon_cornerRadius", "carbon_elevation", "carbon_stroke", "carbon_strokeWidth"};
        Stream.of(keyword).forEach(k -> {
            int index = 0;
            while (index < text.length()) {
                index = text.indexOf(k, index);
                if (index == -1)
                    break;
                builder.setSpan(new ForegroundColorSpan(keywordColor), index, index + k.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
                index += k.length();
            }
        });
        return builder;
    }
}