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https://github.com/M66B/FairEmail.git
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Process tables (draft)
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M66B
parent
42f40403fb
commit
60391752f0
1 changed files with 149 additions and 95 deletions
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@ -464,8 +464,9 @@ public class HtmlHelper {
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.addAttributes("div", "x-plain")
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.removeTags("col", "colgroup", "thead", "tbody")
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.removeAttributes("table", "width")
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.removeAttributes("td", "colspan", "rowspan", "width")
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.removeAttributes("th", "colspan", "rowspan", "width")
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.addAttributes("tr", "height")
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.removeAttributes("td", "rowspan", "width")
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.removeAttributes("th", "rowspan", "width")
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.addProtocols("img", "src", "cid")
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.addProtocols("img", "src", "data")
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.removeProtocols("a", "href", "ftp")
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@ -627,8 +628,11 @@ public class HtmlHelper {
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Integer fweight = getFontWeight(value);
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if (fweight != null && fweight >= 600) {
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Element strong = new Element("strong");
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element.replaceWith(strong);
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strong.appendChild(element);
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for (Node child : new ArrayList<>(element.childNodes())) {
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child.remove();
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strong.appendChild(child);
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}
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element.appendChild(strong);
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}
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}
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break;
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@ -818,43 +822,124 @@ public class HtmlHelper {
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// Tables
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// https://developer.mozilla.org/en-US/docs/Web/HTML/Element/table
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for (Element col : document.select("th,td")) {
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col.attr("x-col", "true");
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boolean tdebug = BuildConfig.DEBUG && false;
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Elements tables = document.select("table");
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if (tables.size() > 0)
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for (int t = tables.size() - 1; t >= 0; t--) {
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Element table = tables.get(t);
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String before = col.attr("x-line-before");
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if (!TextUtils.isEmpty(before)) {
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if ("true".equals(before) && col.parent() != null)
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col.parent().attr("x-line-before", "true");
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col.removeAttr("x-line-before");
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}
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// Get rows and caption
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Elements rows = new Elements();
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Elements extras = new Elements();
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for (Element child : table.children()) {
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switch (child.tagName()) {
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case "thead":
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case "tbody":
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case "tfoot":
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for (Element sub : child.children())
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if ("tr".equals(sub.tagName()))
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rows.add(sub);
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else
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extras.add(sub);
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break;
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case "tr":
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rows.add(child);
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break;
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default: // caption
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extras.add(child);
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break;
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}
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}
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String after = col.attr("x-line-after");
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if (!TextUtils.isEmpty(after)) {
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if ("true".equals(after) && col.parent() != null)
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col.parent().attr("x-line-after", "true");
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col.removeAttr("x-line-after");
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}
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// Process column spans
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int maxcols = 0;
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for (Element row : rows) {
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int cols = 0;
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for (Element col : row.children()) {
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cols++;
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if ("th".equals(col.tagName()))
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col.tagName("strong");
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else
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col.tagName("span");
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}
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if (!"td".equals(col.tagName()) && !"th".equals(col.tagName())) {
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Log.w("Column expected tag=" + col.tagName());
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if (tdebug) {
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col.prependText("COLUMN=" + col.tagName() + "[");
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col.appendText("]");
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}
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col.attr("x-block", "true");
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}
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for (Element row : document.select("tr"))
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row.tagName("span").attr("x-row", Integer.toString(row.siblingElements().size()));
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String span = col.attr("colspan");
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if (!TextUtils.isEmpty(span))
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try {
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int colspan = Integer.parseInt(span);
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if (colspan > 1) {
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if (tdebug)
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col.prependText("SPAN=" + colspan);
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for (int s = 1; s < colspan; s++) {
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cols++;
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Element clone = col.clone();
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clone.children().remove();
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if (tdebug)
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clone.prependText("(" + s + ")");
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clone.append(" ");
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col.after(clone);
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}
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}
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} catch (NumberFormatException ex) {
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Log.w(ex);
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}
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}
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if (cols > maxcols)
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maxcols = cols;
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}
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document.select("caption").tagName("div");
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for (Element table : document.select("table")) {
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table.attr("x-table", "true");
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if (table.parent() != null && "a".equals(table.parent().tagName()))
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table.tagName("span"); // Links cannot contain tables
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else
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// Rebuild table
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table.tagName("div");
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}
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for (Element hf : document.select("thead,tfoot"))
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hf.tagName("span");
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table.children().remove(); // leaves nodes
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for (int c = 0; c < maxcols; c++) {
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Element col = document.createElement("div")
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.attr("x-block", "true");
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int r = 0;
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for (Element row : rows) {
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r++;
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Elements rowcol = row.children();
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if (c < rowcol.size()) {
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Element cell = rowcol.get(c).clone().tagName("div");
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if (tdebug) {
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StringBuilder sb = new StringBuilder();
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sb.append(rowcol.get(c).tagName() + "=" + rowcol.get(c).className());
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for (Node node : rowcol.get(c).childNodes()) {
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sb.append(':');
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if (node instanceof Element)
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sb.append(node.nodeName());
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else if (node instanceof TextNode)
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sb.append("~");
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else
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sb.append(node.getClass().getSimpleName());
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}
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cell.prependText("CELL=" + (t + 1) +
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":" + r + "/" + rows.size() +
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":" + (c + 1) + "/" + maxcols + "/" +
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sb.toString() + "[");
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cell.appendText("]");
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}
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col.appendChild(cell);
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}
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}
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if (text_separators && view)
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col.appendElement("hr").attr("x-dashed", "true");
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table.appendChild(col);
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}
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for (Element extra : extras) {
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if (tdebug) {
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extra.prependText("EXTRA=" + extra.tagName() + "[");
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extra.appendText("]");
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}
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table.appendChild(extra.tagName("div").attr("x-block", "true"));
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}
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}
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// Images
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// https://developer.mozilla.org/en-US/docs/Web/HTML/Element/img
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@ -1997,34 +2082,21 @@ public class HtmlHelper {
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NodeTraversor.traverse(new NodeVisitor() {
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private Element element;
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private TextNode tnode;
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private int rows = 0;
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private int cols = 0;
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@Override
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public void head(Node node, int depth) {
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if (node instanceof Element) {
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element = (Element) node;
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if (rows == 0) {
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if ("true".equals(element.attr("x-block")))
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if (ssb.length() > 1 && ssb.charAt(ssb.length() - 1) != '\n')
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ssb.append('\n');
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if ("true".equals(element.attr("x-paragraph")))
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if (ssb.length() > 2 &&
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(ssb.charAt(ssb.length() - 2) != '\n' ||
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ssb.charAt(ssb.length() - 1) != '\n'))
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ssb.append('\n');
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}
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String xrow = element.attr("x-row");
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if (!TextUtils.isEmpty(xrow)) {
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if (Integer.parseInt(xrow) > 1)
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rows++;
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if ("true".equals(element.attr("x-block")))
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if (ssb.length() > 1 && ssb.charAt(ssb.length() - 1) != '\n')
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ssb.append('\n');
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}
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if ("true".equals(element.attr("x-col")))
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cols++;
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if ("true".equals(element.attr("x-paragraph")))
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if (ssb.length() > 2 &&
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(ssb.charAt(ssb.length() - 2) != '\n' ||
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ssb.charAt(ssb.length() - 1) != '\n'))
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ssb.append('\n');
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if ("true".equals(element.attr("x-line-before")) &&
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ssb.length() > 0 && ssb.charAt(ssb.length() - 1) == '\n')
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@ -2095,24 +2167,22 @@ public class HtmlHelper {
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break;
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case "text-align":
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// https://developer.mozilla.org/en-US/docs/Web/CSS/text-align
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if (rows == 0) {
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Layout.Alignment alignment = null;
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switch (value) {
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case "left":
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case "start":
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alignment = (ltr ? Layout.Alignment.ALIGN_NORMAL : Layout.Alignment.ALIGN_OPPOSITE);
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break;
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case "center":
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alignment = Layout.Alignment.ALIGN_CENTER;
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break;
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case "right":
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case "end":
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alignment = (ltr ? Layout.Alignment.ALIGN_OPPOSITE : Layout.Alignment.ALIGN_NORMAL);
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break;
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}
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if (alignment != null)
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setSpan(ssb, new AlignmentSpan.Standard(alignment), start, ssb.length());
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Layout.Alignment alignment = null;
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switch (value) {
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case "left":
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case "start":
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alignment = (ltr ? Layout.Alignment.ALIGN_NORMAL : Layout.Alignment.ALIGN_OPPOSITE);
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break;
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case "center":
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alignment = Layout.Alignment.ALIGN_CENTER;
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break;
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case "right":
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case "end":
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alignment = (ltr ? Layout.Alignment.ALIGN_OPPOSITE : Layout.Alignment.ALIGN_NORMAL);
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break;
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}
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if (alignment != null)
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setSpan(ssb, new AlignmentSpan.Standard(alignment), start, ssb.length());
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break;
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}
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}
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@ -2314,31 +2384,15 @@ public class HtmlHelper {
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Log.e(ex);
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}
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if (rows == 0) {
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if ("true".equals(element.attr("x-block")))
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if (ssb.length() > 1 && ssb.charAt(ssb.length() - 1) != '\n')
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ssb.append('\n');
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if ("true".equals(element.attr("x-paragraph")))
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if (ssb.length() > 2 &&
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(ssb.charAt(ssb.length() - 2) != '\n' ||
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ssb.charAt(ssb.length() - 1) != '\n'))
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ssb.append('\n');
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}
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if ("true".equals(element.attr("x-col"))) {
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cols--;
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if (ssb.length() > 0 &&
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ssb.charAt(ssb.length() - 1) != '\n' &&
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ssb.charAt(ssb.length() - 1) != '\u2003')
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ssb.append('\u2003'); // emsp
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}
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String xrow = element.attr("x-row");
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if (!TextUtils.isEmpty(xrow)) {
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if (Integer.parseInt(xrow) > 1)
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rows--;
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if ("true".equals(element.attr("x-block")))
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if (ssb.length() > 1 && ssb.charAt(ssb.length() - 1) != '\n')
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ssb.append('\n');
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}
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if ("true".equals(element.attr("x-paragraph")))
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if (ssb.length() > 2 &&
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(ssb.charAt(ssb.length() - 2) != '\n' ||
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ssb.charAt(ssb.length() - 1) != '\n'))
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ssb.append('\n');
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if ("true".equals(element.attr("x-line-after")) &&
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ssb.length() > 0 && ssb.charAt(ssb.length() - 1) == '\n')
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