src/com/googlecode/lanterna/gui2/table/DefaultTableCellRenderer.java

   1 package com.googlecode.lanterna.gui2.table;
   2
   3 import com.googlecode.lanterna.TerminalTextUtils;
   4 import com.googlecode.lanterna.TerminalSize;
   5 import com.googlecode.lanterna.graphics.ThemeDefinition;
   6 import com.googlecode.lanterna.gui2.TextGUIGraphics;
   7
   8 /**
   9  * Default implementation of {@code TableCellRenderer}
  10  * @param <V> Type of data stored in each table cell
  11  * @author Martin
  12  */
  13 public class DefaultTableCellRenderer<V> implements TableCellRenderer<V> {
  14     @Override
  15     public TerminalSize getPreferredSize(Table<V> table, V cell, int columnIndex, int rowIndex) {
  16         String[] lines = getContent(cell);
  17         int maxWidth = 0;
  18         for(String line: lines) {
  19             int length = TerminalTextUtils.getColumnWidth(line);
  20             if(maxWidth < length) {
  21                 maxWidth = length;
  22             }
  23         }
  24         return new TerminalSize(maxWidth, lines.length);
  25     }
  26
  27     @Override
  28     public void drawCell(Table<V> table, V cell, int columnIndex, int rowIndex, TextGUIGraphics textGUIGraphics) {
  29         ThemeDefinition themeDefinition = textGUIGraphics.getThemeDefinition(Table.class);
  30         if((table.getSelectedColumn() == columnIndex && table.getSelectedRow() == rowIndex) ||
  31                 (table.getSelectedRow() == rowIndex && !table.isCellSelection())) {
  32             if(table.isFocused()) {
  33                 textGUIGraphics.applyThemeStyle(themeDefinition.getActive());
  34             }
  35             else {
  36                 textGUIGraphics.applyThemeStyle(themeDefinition.getSelected());
  37             }
  38             textGUIGraphics.fill(' ');  //Make sure to fill the whole cell first
  39         }
  40         else {
  41             textGUIGraphics.applyThemeStyle(themeDefinition.getNormal());
  42         }
  43         String[] lines = getContent(cell);
  44         int rowCount = 0;
  45         for(String line: lines) {
  46             textGUIGraphics.putString(0, rowCount++, line);
  47         }
  48     }
  49
  50     private String[] getContent(V cell) {
  51         String[] lines;
  52         if(cell == null) {
  53             lines = new String[] { "" };
  54         }
  55         else {
  56             lines = cell.toString().split("\r?\n");
  57         }
  58         return lines;
  59     }
  60 }