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package com.google.refine.model.changes;
import java.io.IOException;
import java.io.LineNumberReader;
import java.io.Writer;
import java.util.Properties;
import com.google.refine.history.Change;
import com.google.refine.model.Project;
import com.google.refine.model.Row;
import com.google.refine.util.Pool;
public class RowFlagChange implements Change {
final int rowIndex;
final boolean newFlagged;
Boolean oldFlagged = null;
public RowFlagChange(int rowIndex, boolean newFlagged) {
this.rowIndex = rowIndex;
this.newFlagged = newFlagged;
}
@Override
public void apply(Project project) {
Row row = project.rows.get(rowIndex);
if (oldFlagged == null) {
oldFlagged = row.flagged;
}
row.flagged = newFlagged;
}
@Override
public void revert(Project project) {
Row row = project.rows.get(rowIndex);
row.flagged = oldFlagged;
}
@Override
public void save(Writer writer, Properties options) throws IOException {
writer.write("row="); writer.write(Integer.toString(rowIndex)); writer.write('\n');
writer.write("newFlagged="); writer.write(Boolean.toString(newFlagged)); writer.write('\n');
writer.write("oldFlagged="); writer.write(Boolean.toString(oldFlagged)); writer.write('\n');
writer.write("/ec/\n"); // end of change marker
}
static public RowFlagChange load(LineNumberReader reader, Pool pool) throws Exception {
int row = -1;
boolean oldFlagged = false;
boolean newFlagged = false;
String line;
while ((line = reader.readLine()) != null && !"/ec/".equals(line)) {
int equal = line.indexOf('=');
CharSequence field = line.subSequence(0, equal);
String value = line.substring(equal + 1);
if ("row".equals(field)) {
row = Integer.parseInt(value);
} else if ("oldFlagged".equals(field)) {
oldFlagged = Boolean.parseBoolean(value);
} else if ("newFlagged".equals(field)) {
oldFlagged = Boolean.parseBoolean(value);
}
}
RowFlagChange change = new RowFlagChange(row, newFlagged);
change.oldFlagged = oldFlagged;
return change;
}
}