/**
* Creates the tool context denoting the range of samples that should be analysed by a tool.
*
* @return a tool context, never <code>null</code>.
*/
private ToolContext createToolContext() {
int startOfDecode = -1;
int endOfDecode = -1;
final int dataLength = this.dataContainer.getValues().length;
if (this.dataContainer.isCursorsEnabled()) {
if (this.dataContainer.isCursorPositionSet(0)) {
final Long cursor1 = this.dataContainer.getCursorPosition(0);
startOfDecode = this.dataContainer.getSampleIndex(cursor1.longValue()) - 1;
}
if (this.dataContainer.isCursorPositionSet(1)) {
final Long cursor2 = this.dataContainer.getCursorPosition(1);
endOfDecode = this.dataContainer.getSampleIndex(cursor2.longValue()) + 1;
}
} else {
startOfDecode = 0;
endOfDecode = dataLength;
}
startOfDecode = Math.max(0, startOfDecode);
if ((endOfDecode < 0) || (endOfDecode >= dataLength)) {
endOfDecode = dataLength - 1;
}
return new DefaultToolContext(startOfDecode, endOfDecode);
}
/** @see nl.lxtreme.ols.api.tools.ToolContext#getLength() */
@Override
public int getLength() {
return Math.max(0, this.endSampleIdx - this.startSampleIdx);
}