/**
* Check if a resource request/response overlaps with the display window. If no end time for the
* resource exists, it is treated as Double.MAX_VALUE
*
* @param resource the resource to check
* @param left the left boundary of the window
* @param right the right boundary of the window
* @return true if some portion of the request falls in the window
*/
protected boolean isResourceInWindow(NetworkResource resource, double left, double right) {
double startTime = resource.getStartTime();
double endTime = resource.getEndTime();
// A version we can use to compare to our left bound
double comparableEndTime = endTime;
if (Double.isNaN(endTime)) {
// We assume the request simply has not terminated, so we set the
// comparable version to something big.
comparableEndTime = Double.MAX_VALUE;
}
return (startTime < right && comparableEndTime > left);
}
/**
* Display all resources that fall in the given window.
*
* @param left the left boundary
* @param right the right boundary
*/
protected void displayResourcesInWindow(double left, double right) {
NetworkVisualizationModel model = getModel();
// We dont need to update if we
// have not shifted bounds.
if ((displayed.size() > 0) && (left == oldLeft) && (right == oldRight)) {
return;
} else {
oldLeft = left;
oldRight = right;
}
// clean up Event Hookups
for (int i = 0; i < displayed.size(); i++) {
ResourceRow row = displayed.get(i);
row.cleanUp();
}
// blank the resource Panel
displayed.clear();
getContentElement().setInnerHTML("");
// We do a naive linear search until the kinks can be ironed
// out of more sophisticated search.
List<NetworkResource> networkResources = model.getSortedResources();
for (int i = 0; i < networkResources.size(); i++) {
NetworkResource resource = networkResources.get(i);
if (isResourceInWindow(resource, left, right)) {
displayResource(left, right, resource);
}
// Bail once we've hit the right edge
if (resource.getStartTime() >= right) {
break;
}
}
if (shouldFlash) {
CssTransitionFloat.get().transition(getElement(), "opacity", 0, 1, 200);
shouldFlash = false;
}
}