/*
* Copyright 2000-2007 JetBrains s.r.o.
*
* 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 com.intellij.util.xml.ui;
import com.intellij.ui.UserActivityListener;
import com.intellij.util.Alarm;
import com.intellij.openapi.Disposable;
import com.intellij.openapi.components.ServiceManager;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.progress.ProgressManager;
import com.intellij.openapi.progress.ProgressIndicator;
/**
* User: Sergey.Vasiliev
*/
public class CommitablePanelUserActivityListener implements UserActivityListener, Disposable {
private final Committable myPanel;
private final Project myProject;
private final Alarm myAlarm = new Alarm();
private boolean myApplying;
public CommitablePanelUserActivityListener(Project project) {
this(null, project);
}
public CommitablePanelUserActivityListener(final Committable panel, Project project) {
myPanel = panel;
myProject = project;
}
final public void stateChanged() {
if (myApplying) return;
cancel();
cancelAllRequests();
myAlarm.addRequest(new Runnable() {
public void run() {
myApplying = true;
cancel();
try {
applyChanges();
}
finally {
myApplying = false;
}
}
}, 717);
}
private static void cancel() {
final ProgressIndicator indicator = ProgressManager.getInstance().getProgressIndicator();
if (indicator != null) {
indicator.cancel();
}
}
protected void applyChanges() {
if (myPanel != null) {
commit(myPanel);
}
}
protected final void commit(final Committable panel) {
ServiceManager.getService(getProject(), CommittableUtil.class).commit(panel);
}
protected final Project getProject() {
return myProject;
}
public final boolean isWaiting() {
return myAlarm.getActiveRequestCount() > 0;
}
public final void cancelAllRequests() {
myAlarm.cancelAllRequests();
}
public void dispose() {
cancelAllRequests();
}
}