package it.niedermann.owncloud.notes.util; import android.content.Context; import android.graphics.Color; import android.text.Spanned; import android.text.TextUtils; import android.util.Log; import androidx.annotation.NonNull; import androidx.core.content.res.ResourcesCompat; import com.yydcdut.markdown.MarkdownConfiguration; import com.yydcdut.markdown.MarkdownConfiguration.Builder; import com.yydcdut.markdown.MarkdownProcessor; import com.yydcdut.markdown.span.MDImageSpan; import com.yydcdut.markdown.theme.ThemeDefault; import com.yydcdut.markdown.theme.ThemeSonsOfObsidian; import it.niedermann.owncloud.notes.R; /** * Created by stefan on 07.12.16. */ @SuppressWarnings("WeakerAccess") public class MarkDownUtil { private static final String TAG = MarkDownUtil.class.getSimpleName(); public static final String CHECKBOX_UNCHECKED_MINUS = "- [ ]"; public static final String CHECKBOX_UNCHECKED_MINUS_TRAILING_SPACE = CHECKBOX_UNCHECKED_MINUS + " "; public static final String CHECKBOX_UNCHECKED_STAR = "* [ ]"; public static final String CHECKBOX_UNCHECKED_STAR_TRAILING_SPACE = CHECKBOX_UNCHECKED_STAR + " "; public static final String CHECKBOX_CHECKED_MINUS = "- [x]"; public static final String CHECKBOX_CHECKED_STAR = "* [x]"; private static final String MD_IMAGE_WITH_EMPTY_DESCRIPTION = "![]("; private static final String MD_IMAGE_WITH_SPACE_DESCRIPTION = "![ ]("; private static final String[] MD_IMAGE_WITH_EMPTY_DESCRIPTION_ARRAY = new String[]{MD_IMAGE_WITH_EMPTY_DESCRIPTION}; private static final String[] MD_IMAGE_WITH_SPACE_DESCRIPTION_ARRAY = new String[]{MD_IMAGE_WITH_SPACE_DESCRIPTION}; /** * Ensures every instance of RxMD uses the same configuration * * @param context Context * @return RxMDConfiguration */ public static Builder getMarkDownConfiguration(Context context) { return getMarkDownConfiguration(context, Notes.isDarkThemeActive(context)); } public static Builder getMarkDownConfiguration(Context context, Boolean darkTheme) { return new MarkdownConfiguration.Builder(context) .setUnOrderListColor(ResourcesCompat.getColor(context.getResources(), darkTheme ? R.color.widget_fg_dark_theme : R.color.widget_fg_default, null)) .setHeader2RelativeSize(1.35f) .setHeader3RelativeSize(1.25f) .setHeader4RelativeSize(1.15f) .setHeader5RelativeSize(1.1f) .setHeader6RelativeSize(1.05f) .setHorizontalRulesHeight(2) .setCodeBgColor(darkTheme ? ResourcesCompat.getColor(context.getResources(), R.color.fg_default_high, null) : Color.LTGRAY) .setTheme(darkTheme ? new ThemeSonsOfObsidian() : new ThemeDefault()) .setTodoColor(ResourcesCompat.getColor(context.getResources(), darkTheme ? R.color.widget_fg_dark_theme : R.color.widget_fg_default, null)) .setTodoDoneColor(ResourcesCompat.getColor(context.getResources(), darkTheme ? R.color.widget_fg_dark_theme : R.color.widget_fg_default, null)) .setLinkFontColor(ResourcesCompat.getColor(context.getResources(), R.color.defaultBrand, null)) .setRxMDImageLoader(new NotesImageLoader(context)) .setDefaultImageSize(400, 300); } /** * This is a compatibility-method that provides workarounds for several bugs in RxMarkdown *
* https://github.com/stefan-niedermann/nextcloud-notes/issues/772 * * @param markdownProcessor RxMarkdown MarkdownProcessor instance * @param text CharSequence that should be parsed * @return the processed text but with several workarounds for Bugs in RxMarkdown */ @NonNull public static CharSequence parseCompat(@NonNull final MarkdownProcessor markdownProcessor, CharSequence text) { if (TextUtils.isEmpty(text)) { return ""; } Log.v(TAG, "parseCompat - Original: \"" + text + "\""); while (TextUtils.indexOf(text, MD_IMAGE_WITH_EMPTY_DESCRIPTION) >= 0) { text = TextUtils.replace(text, MD_IMAGE_WITH_EMPTY_DESCRIPTION_ARRAY, MD_IMAGE_WITH_SPACE_DESCRIPTION_ARRAY); } Log.v(TAG, "parseCompat - Replaced empty image descriptions: \"" + text + "\""); return markdownProcessor.parse(text); } public static boolean containsImageSpan(@NonNull CharSequence text) { return ((Spanned) text).getSpans(0, text.length(), MDImageSpan.class).length > 0; } public static boolean lineStartsWithCheckbox(@NonNull String line) { return lineStartsWithCheckbox(line, true) || lineStartsWithCheckbox(line, false); } public static boolean lineStartsWithCheckbox(@NonNull String line, boolean starAsLeadingCharacter) { return starAsLeadingCharacter ? line.startsWith(CHECKBOX_UNCHECKED_STAR) || line.startsWith(CHECKBOX_CHECKED_STAR) : line.startsWith(CHECKBOX_UNCHECKED_MINUS) || line.startsWith(CHECKBOX_CHECKED_MINUS); } public static int getStartOfLine(@NonNull CharSequence s, int cursorPosition) { int startOfLine = cursorPosition; while (startOfLine > 0 && s.charAt(startOfLine - 1) != '\n') { startOfLine--; } return startOfLine; } public static int getEndOfLine(@NonNull CharSequence s, int cursorPosition) { int nextLinebreak = s.toString().indexOf('\n', cursorPosition); if (nextLinebreak > -1) { return nextLinebreak; } return cursorPosition; } }