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package it.niedermann.owncloud.notes.model;
import android.content.Context;
import android.graphics.Color;
import android.graphics.drawable.GradientDrawable;
import android.os.Build;
import android.os.Handler;
import android.os.Looper;
import android.text.SpannableString;
import android.text.TextUtils;
import android.text.style.BackgroundColorSpan;
import android.text.style.ForegroundColorSpan;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.ColorInt;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.core.graphics.drawable.DrawableCompat;
import androidx.recyclerview.widget.RecyclerView;
import com.yydcdut.markdown.MarkdownProcessor;
import com.yydcdut.markdown.syntax.text.TextFactory;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import it.niedermann.owncloud.notes.R;
import it.niedermann.owncloud.notes.branding.BrandingUtil;
import it.niedermann.owncloud.notes.util.MarkDownUtil;
import it.niedermann.owncloud.notes.util.Notes;
import static androidx.recyclerview.widget.RecyclerView.NO_POSITION;
import static it.niedermann.owncloud.notes.util.ColorUtil.contrastRatioIsSufficient;
import static it.niedermann.owncloud.notes.util.ColorUtil.isColorDark;
import static it.niedermann.owncloud.notes.util.MarkDownUtil.parseCompat;
public abstract class NoteViewHolder extends RecyclerView.ViewHolder implements View.OnLongClickListener, View.OnClickListener {
private final NoteClickListener noteClickListener;
private final boolean renderMarkdown;
private MarkdownProcessor markdownProcessor;
public NoteViewHolder(@NonNull View v, @NonNull NoteClickListener noteClickListener, boolean renderMarkdown) {
super(v);
this.noteClickListener = noteClickListener;
this.renderMarkdown = renderMarkdown;
if (renderMarkdown) {
markdownProcessor = new MarkdownProcessor(itemView.getContext());
markdownProcessor.factory(TextFactory.create());
markdownProcessor.config(MarkDownUtil.getMarkDownConfiguration(itemView.getContext()).build());
}
v.setOnClickListener(this);
v.setOnLongClickListener(this);
}
@Override
public void onClick(View v) {
final int adapterPosition = getAdapterPosition();
if (adapterPosition != NO_POSITION) {
noteClickListener.onNoteClick(adapterPosition, v);
}
}
@Override
public boolean onLongClick(View v) {
return noteClickListener.onNoteLongClick(getAdapterPosition(), v);
}
public abstract void bind(@NonNull DBNote note, boolean showCategory, int mainColor, int textColor, @Nullable CharSequence searchQuery);
protected void bindCategory(@NonNull Context context, @NonNull TextView noteCategory, boolean showCategory, @NonNull String category, int mainColor) {
final boolean isDarkThemeActive = Notes.isDarkThemeActive(context);
noteCategory.setVisibility(showCategory && !category.isEmpty() ? View.VISIBLE : View.GONE);
noteCategory.setText(category);
@ColorInt int categoryForeground;
@ColorInt int categoryBackground;
if (isDarkThemeActive) {
if (isColorDark(mainColor)) {
if (contrastRatioIsSufficient(mainColor, Color.BLACK)) {
categoryBackground = mainColor;
categoryForeground = Color.WHITE;
} else {
categoryBackground = Color.WHITE;
categoryForeground = mainColor;
}
} else {
categoryBackground = mainColor;
categoryForeground = Color.BLACK;
}
} else {
categoryForeground = Color.BLACK;
if (isColorDark(mainColor) || contrastRatioIsSufficient(mainColor, Color.WHITE)) {
categoryBackground = mainColor;
} else {
categoryBackground = Color.BLACK;
}
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
DrawableCompat.setTint(noteCategory.getBackground(), categoryBackground);
} else {
final GradientDrawable drawable = (GradientDrawable) noteCategory.getBackground();
drawable.setStroke(1, categoryBackground);
drawable.setColor(isDarkThemeActive ? categoryBackground : Color.TRANSPARENT);
}
noteCategory.setTextColor(categoryForeground);
}
protected void bindFavorite(@NonNull ImageView noteFavorite, boolean isFavorite) {
noteFavorite.setImageResource(isFavorite ? R.drawable.ic_star_yellow_24dp : R.drawable.ic_star_grey_ccc_24dp);
noteFavorite.setOnClickListener(view -> noteClickListener.onNoteFavoriteClick(getAdapterPosition(), view));
}
protected void bindSearchableContent(@NonNull Context context, @NonNull TextView textView, @Nullable CharSequence searchQuery, @NonNull String content, int mainColor) {
CharSequence processedContent = content;
if (!TextUtils.isEmpty(searchQuery)) {
@ColorInt final int searchBackground = context.getResources().getColor(R.color.bg_highlighted);
@ColorInt final int searchForeground = BrandingUtil.getSecondaryForegroundColorDependingOnTheme(context, mainColor);
// The Pattern.quote method will add \Q to the very beginning of the string and \E to the end of the string
// It implies that the string between \Q and \E is a literal string and thus the reserved keyword in such string will be ignored.
// See https://stackoverflow.com/questions/15409296/what-is-the-use-of-pattern-quote-method
final Pattern pattern = Pattern.compile("(" + Pattern.quote(searchQuery.toString()) + ")", Pattern.CASE_INSENSITIVE);
SpannableString spannableString = new SpannableString(content);
Matcher matcher = pattern.matcher(spannableString);
while (matcher.find()) {
spannableString.setSpan(new ForegroundColorSpan(searchForeground), matcher.start(), matcher.end(), 0);
spannableString.setSpan(new BackgroundColorSpan(searchBackground), matcher.start(), matcher.end(), 0);
}
processedContent = spannableString;
}
bindContent(textView, processedContent);
}
private void bindContent(@NonNull TextView textView, @NonNull CharSequence charSequence) {
if (renderMarkdown) {
new Thread(() -> {
try {
final CharSequence parsedCharSequence = parseCompat(markdownProcessor, charSequence);
new Handler(Looper.getMainLooper()).post(() -> textView.setText(parsedCharSequence));
} catch (StringIndexOutOfBoundsException e) {
// Workaround for RxMarkdown: https://github.com/stefan-niedermann/nextcloud-notes/issues/668
}
}).start();
} else {
textView.setText(charSequence);
}
}
public abstract void showSwipe(boolean left);
public abstract View getNoteSwipeable();
}
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