//copied from org.eclipse.egit.core;
package org.yakindu.sct.examples.wizard.service.git;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.SubMonitor;
import org.eclipse.jgit.lib.ProgressMonitor;
/** Create a new Git to Eclipse progress monitor. */
public class EclipseGitProgressTransformer implements ProgressMonitor {
private final IProgressMonitor root;
private SubMonitor mainTask;
private SubMonitor subTask;
private String msg;
private int lastWorked;
private int totalWork;
/**
* Create a new progress monitor.
*
* @param eclipseMonitor
* the Eclipse monitor we update.
*/
public EclipseGitProgressTransformer(final IProgressMonitor eclipseMonitor) {
root = eclipseMonitor;
}
@Override
public void start(final int totalTasks) {
// the number of sub tasks is 5 in case of a download operation, but we are always called with totalTasks=2
mainTask = SubMonitor.convert(root, 5);
}
@Override
public void beginTask(final String name, final int total) {
msg = name;
lastWorked = 0;
totalWork = total;
SubMonitor sub;
if (mainTask != null) {
// fork a new child from main task to have accumulated progress bar update
sub = mainTask.newChild(1);
} else {
sub = SubMonitor.convert(root);
}
if (totalWork == UNKNOWN) {
subTask = SubMonitor.convert(sub, IProgressMonitor.UNKNOWN);
} else {
subTask = SubMonitor.convert(sub, totalWork);
}
subTask.subTask(msg);
}
@Override
public void update(final int work) {
if (subTask == null)
return;
final int cmp = lastWorked + work;
if (totalWork == UNKNOWN && cmp > 0) {
if (lastWorked != cmp)
subTask.subTask(msg + ", " + cmp); //$NON-NLS-1$
} else if (totalWork <= 0) {
// Do nothing to update the task.
} else if (cmp * 100 / totalWork != lastWorked * 100 / totalWork) {
final StringBuilder m = new StringBuilder();
m.append(msg);
m.append(": "); //$NON-NLS-1$
while (m.length() < 25)
m.append(' ');
final String twstr = String.valueOf(totalWork);
String cmpstr = String.valueOf(cmp);
while (cmpstr.length() < twstr.length())
cmpstr = " " + cmpstr; //$NON-NLS-1$
final int pcnt = (cmp * 100 / totalWork);
if (pcnt < 100)
m.append(' ');
if (pcnt < 10)
m.append(' ');
m.append(pcnt);
m.append("% ("); //$NON-NLS-1$
m.append(cmpstr);
m.append("/"); //$NON-NLS-1$
m.append(twstr);
m.append(")"); //$NON-NLS-1$
subTask.subTask(m.toString());
}
lastWorked = cmp;
subTask.worked(work);
}
@Override
public void endTask() {
if (subTask != null) {
try {
subTask.done();
} finally {
subTask = null;
}
}
}
@Override
public boolean isCancelled() {
if (subTask != null)
return subTask.isCanceled();
return root.isCanceled();
}
}