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Code Issues Releases Wiki Activity

Less white space

This commit is contained in:
M66B 2019-09-12 10:45:54 +02:00
parent f1c535f86c
commit ec1ad6085f
1 changed files with 35 additions and 40 deletions
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77
app/src/main/java/eu/faircode/email/HtmlHelper.java
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@ -130,7 +130,7 @@ public class HtmlHelper {
}
Whitelist whitelist = Whitelist.relaxed()
.addTags("hr", "abbr")
.addTags("hr", "abbr", "big")
.removeTags("col", "colgroup", "thead", "tbody")
.removeAttributes("table", "width")
.removeAttributes("td", "colspan", "rowspan", "width")
@ -139,6 +139,15 @@ public class HtmlHelper {
.addProtocols("img", "src", "data");
final Document document = new Cleaner(whitelist).clean(parsed);
// Remove new lines without surrounding content
for (Element br : document.select("br"))
if (br.parent() != null && !hasContent(br.parent().childNodes()))
br.tagName("span");
// Paragraphs
for (Element p : document.select("p"))
p.tagName("div");
// Short quotes
for (Element q : document.select("q")) {
q.prependText("\"");
@ -208,24 +217,9 @@ public class HtmlHelper {
// Tables
for (Element col : document.select("th,td")) {
boolean content = false;
for (Node node : col.childNodes())
if (node instanceof TextNode && !((TextNode) node).isBlank()) {
content = true;
break;
} else if (node instanceof Element) {
Element element = (Element) node;
if (!element.isBlock() && hasContent(element)) {
content = true;
break;
}
}
// separate columns
if (content)
if (col.nextElementSibling() == null)
col.appendElement("br");
else
if (hasContent(col.childNodes()))
if (col.nextElementSibling() != null)
col.appendText(" ");
if ("th".equals(col.tagName()))
@ -234,8 +228,12 @@ public class HtmlHelper {
col.tagName("span");
}
for (Element row : document.select("tr"))
for (Element row : document.select("tr")) {
row.tagName("span");
Element next = row.nextElementSibling();
if (next != null && "tr".equals(next.tagName()))
row.appendElement("br");
}
document.select("caption").tagName("div");
@ -358,35 +356,32 @@ public class HtmlHelper {
}
}, document);
// Remove block elements displaying nothing
for (Element e : document.select("*"))
if (e.isBlock() && !hasContent(e))
e.remove();
// Selective new lines
for (Element div : document.select("div"))
if (div.children().select("div").size() == 0 &&
hasContent(div.childNodes())) {
div.appendElement("br");
div.appendElement("br");
}
// Selective line breaking
for (Element div : document.select("div,p")) {
for (Element div : document.select("div"))
div.tagName("span");
boolean content = false;
for (Node child : div.childNodes())
if ((child instanceof TextNode && !((TextNode) child).isBlank()) ||
(child instanceof Element && "img".equals(child.nodeName()))) {
content = true;
break;
}
if (content) {
div.appendElement("br");
div.appendElement("br");
}
}
Element body = document.body();
return (body == null ? "" : body.html());
}
private static boolean hasContent(Element element) {
return (element.hasText() || element.selectFirst("img") != null);
private static boolean hasContent(List<Node> nodes) {
for (Node node : nodes)
if (node instanceof TextNode && !((TextNode) node).isBlank())
return true;
else if (node instanceof Element) {
Element element = (Element) node;
if (!element.isBlock() &&
(element.hasText() || element.selectFirst("img") != null))
return true;
}
return false;
}
static Drawable decodeImage(final Context context, final long id, String source, boolean show, final TextView view) {