/*
* Copyright 2013 TecO - Karlsruhe Institute of Technology
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package squirrel.controller;
import java.util.ArrayList;
import java.util.List;
import squirrel.model.TimeListener;
import squirrel.util.Range;
public class TrackSynchroniser implements TrackEventBus, TimeListener {
private List<Entry> trackControllers = new ArrayList<>();
private long startTime;
/**
* A little helper class, that associates a track with a group.
*/
private class Entry {
TrackController trackController;
int group;
Entry(int group, TrackController trackController) {
this.trackController = trackController;
this.group = group;
}
}
/**
* Constructs a new instance of this class using {@code startTime} to
* convert the current time to a time that is applicable to the
* {@code TrackController}s.
*
* @param startTime the time used to convert between current and track time
*/
public TrackSynchroniser(long startTime) {
this.startTime = startTime;
}
@Override
public void subscribe(TrackController instance, int group) {
trackControllers.add(new Entry(group, instance));
}
@Override
public void publishVisibleExcerptMoved(TrackController publisher, int group, int delta) {
for (Entry e : trackControllers) {
if (e.group == group && publisher != e.trackController) {
e.trackController.visibleExcerptMoved(delta);
}
}
}
@Override
public void publishExcerptSelected(TrackController publisher, int group, Range selection) {
for (Entry e : trackControllers) {
if (e.group == group && publisher != e.trackController) {
e.trackController.excerptSelected(selection);
}
}
}
@Override
public void publishSelectionCanceled(TrackController publisher, int group) {
for (Entry e : trackControllers) {
if (e.group == group && publisher != e.trackController) {
e.trackController.excerptSelectionCanceled();
}
}
}
@Override
public void publishZoomStepChanged(TrackController publisher, int group,
double newPixelTimeRatio) {
for (Entry e : trackControllers) {
if (e.group == group && publisher != e.trackController) {
e.trackController.zoomStepChanged(newPixelTimeRatio);
}
}
}
@Override
public void timeChanged(long timeStamp) {
for (Entry e : trackControllers) {
e.trackController.timeChanged(timeStamp + startTime);
}
}
@Override
public void setPlay() {
// TODO Auto-generated method stub
}
@Override
public void setPause() {
// TODO Auto-generated method stub
}
}