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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.clustercontroller.core.status.statuspage;
import java.util.ArrayList;
/**
* Helper class in order to write HTML tables
*/
public class HtmlTable {
int border = 1;
int cellSpacing = 0;
enum Orientation { LEFT, CENTER, RIGHT }
public static class CellProperties {
Integer backgroundColor;
Integer colSpan; // Colspan 0 indicate rest of table
Integer rowSpan;
Orientation contentAlignment;
Boolean allowLineBreaks;
CellProperties setColSpan(Integer span) { this.colSpan = span; return this; }
CellProperties setRowSpan(Integer span) { this.rowSpan = span; return this; }
CellProperties setBackgroundColor(Integer bgcol) { this.backgroundColor = bgcol; return this; }
CellProperties align(Orientation alignment) { this.contentAlignment = alignment; return this; }
CellProperties allowLineBreaks(Boolean allow) { this.allowLineBreaks = allow; return this; }
void add(CellProperties cp) {
if (cp.backgroundColor != null) backgroundColor = cp.backgroundColor;
if (cp.colSpan != null) colSpan = cp.colSpan;
if (cp.rowSpan != null) rowSpan = cp.rowSpan;
if (cp.contentAlignment != null) contentAlignment = cp.contentAlignment;
if (cp.allowLineBreaks != null) allowLineBreaks = cp.allowLineBreaks;
}
}
ArrayList<CellProperties> colProperties = new ArrayList<CellProperties>();
CellProperties tableProperties = new CellProperties();
public static class Cell {
CellProperties properties = new CellProperties();
String content;
Cell(String content) { this.content = content; }
Cell addProperties(CellProperties c) { properties.add(c); return this; }
}
public static class Row {
boolean isHeaderRow;
ArrayList<Cell> cells = new ArrayList<Cell>();
CellProperties rowProperties = new CellProperties();
public Row addCell(Cell c) {
cells.add(c);
return this;
}
public Cell getLastCell() {
return cells.get(cells.size() - 1);
}
Row setHeaderRow() { isHeaderRow = true; return this; }
Row addProperties(CellProperties p) { rowProperties.add(p); return this; }
}
private final ArrayList<Row> cells = new ArrayList<Row>();
public HtmlTable() {
}
public HtmlTable addRow(Row r) {
cells.add(r);
return this;
}
public CellProperties getTableProperties() { return tableProperties; }
public CellProperties getColProperties(int col) {
while (colProperties.size() <= col) {
colProperties.add(new CellProperties());
}
return colProperties.get(col);
}
private String getColor(int color) {
String col = Integer.toHexString(color);
while (col.length() < 6) col = "0" + col;
return col;
}
public static String escape(String s) {
s = s.replaceAll("&", "&");
s = s.replaceAll("<", "<");
s = s.replaceAll(">", ">");
return s;
}
public int getColumnCount() {
int cols = 0;
ArrayList<Integer> next = new ArrayList<Integer>();
for (Row row : cells) {
int rowCount = 0;
if (!next.isEmpty()) {
rowCount += next.get(0);
next.remove(0);
}
for (Cell c : row.cells) {
int width = 1;
if (c.properties.colSpan != null && c.properties.colSpan > 1) {
width = c.properties.colSpan;
}
rowCount += width;
if (c.properties.rowSpan != null && c.properties.rowSpan > 1) {
while (next.size() < c.properties.rowSpan - 1) {
next.add(0);
}
for (int i=1; i<c.properties.rowSpan; ++i) {
next.set(i - 1, next.get(i - 1) + width);
}
}
}
cols = Math.max(cols, rowCount);
}
return cols;
}
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("<table border=\"").append(border).append("\" cellSpacing=\"").append(cellSpacing).append("\">\n");
int columnCount = getColumnCount();
for (Row row : cells) {
sb.append("<tr>\n");
for (int i=0; i<row.cells.size(); ++i) {
Cell cell = row.cells.get(i);
CellProperties properties = new CellProperties();
properties.add(tableProperties);
if (colProperties.size() > i) {
properties.add(colProperties.get(i));
}
properties.add(row.rowProperties);
properties.add(cell.properties);
sb.append(row.isHeaderRow ? "<th" : "<td");
if (properties.backgroundColor != null) {
sb.append(" bgcolor=\"#").append(getColor(properties.backgroundColor)).append('"');
}
if (properties.contentAlignment != null) {
sb.append(" align=\"").append(properties.contentAlignment.name().toLowerCase()).append('"');
}
if (properties.colSpan != null) {
int colSpan = properties.colSpan;
if (colSpan == 0) colSpan = (columnCount - i);
sb.append(" colspan=\"").append(colSpan).append('"');
}
if (properties.rowSpan != null) {
sb.append(" rowspan=\"").append(properties.rowSpan).append('"');
}
sb.append(">");
if (properties.allowLineBreaks != null && !properties.allowLineBreaks) sb.append("<nobr>");
sb.append(cell.content);
if (properties.allowLineBreaks != null && !properties.allowLineBreaks) sb.append("</nobr>");
sb.append(row.isHeaderRow ? "</th>" : "</td>").append("\n");
}
sb.append("</tr>\n");
}
sb.append("</table>\n");
return sb.toString();
}
}
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