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package org.wordpress.android.ui.comments;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.drawable.Drawable;
import android.support.v4.content.ContextCompat;
import android.text.Layout;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.style.LeadingMarginSpan;
import android.text.util.Linkify;
import android.widget.TextView;
import org.wordpress.android.R;
import org.wordpress.android.WordPress;
import org.wordpress.android.util.EmoticonsUtils;
import org.wordpress.android.util.HtmlUtils;
import org.wordpress.android.util.helpers.WPImageGetter;
public class CommentUtils {
/*
* displays comment text as html, including retrieving images
*/
public static void displayHtmlComment(TextView textView, String content, int maxImageSize) {
if (textView == null) {
return;
}
if (content == null) {
textView.setText(null);
return;
}
// skip performance hit of html conversion if content doesn't contain html
if (!content.contains("<") && !content.contains("&")) {
content = content.trim();
textView.setText(content);
// make sure unnamed links are clickable
if (content.contains("://")) {
Linkify.addLinks(textView, Linkify.WEB_URLS);
}
return;
}
// convert emoticons first (otherwise they'll be downloaded)
content = EmoticonsUtils.replaceEmoticonsWithEmoji(content);
// now convert to HTML with an image getter that enforces a max image size
final Spanned html;
if (maxImageSize > 0 && content.contains("<img")) {
Drawable loading = ContextCompat.getDrawable(textView.getContext(),
R.drawable.legacy_dashicon_format_image_big_grey);
Drawable failed = ContextCompat.getDrawable(textView.getContext(),
R.drawable.noticon_warning_big_grey);
html = HtmlUtils.fromHtml(content, new WPImageGetter(textView, maxImageSize, WordPress.imageLoader, loading,
failed));
} else {
html = HtmlUtils.fromHtml(content);
}
// remove extra \n\n added by Html.convert()
int start = 0;
int end = html.length();
while (start < end && Character.isWhitespace(html.charAt(start))) {
start++;
}
while (end > start && Character.isWhitespace(html.charAt(end - 1))) {
end--;
}
textView.setText(html.subSequence(start, end));
}
// Assumes all lines after first line will not be indented
public static void indentTextViewFirstLine(TextView textView, int textOffsetX) {
if (textView == null || textOffsetX < 0) return;
SpannableString text = new SpannableString(textView.getText());
text.setSpan(new TextWrappingLeadingMarginSpan(textOffsetX), 0, text.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(text);
}
private static class TextWrappingLeadingMarginSpan implements LeadingMarginSpan.LeadingMarginSpan2 {
private final int margin;
private final int lines;
public TextWrappingLeadingMarginSpan(int margin) {
this.margin = margin;
this.lines = 1;
}
@Override
public int getLeadingMargin(boolean first) {
return first ? margin : 0;
}
@Override
public void drawLeadingMargin(Canvas c, Paint p, int x, int dir, int top, int baseline, int bottom, CharSequence text, int start, int end, boolean first, Layout layout) {
}
@Override
public int getLeadingMarginLineCount() {
return lines;
}
}
}
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