blob: 8a479dd8967a7c6ebc1d276d09d35d713ab6cb72 [file] [log] [blame]
// Copyright (C) 2013 The Android Open Source Project
//
// 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.google.gerrit.client.api;
import com.google.gerrit.client.ErrorDialog;
import com.google.gerrit.client.Gerrit;
import com.google.gerrit.client.VoidResult;
import com.google.gerrit.client.rpc.NativeMap;
import com.google.gerrit.client.rpc.Natives;
import com.google.gwt.core.client.Callback;
import com.google.gwt.core.client.CodeDownloadException;
import com.google.gwt.core.client.ScriptInjector;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwtexpui.progress.client.ProgressBar;
import java.util.List;
import java.util.stream.Collectors;
/** Loads JavaScript plugins with a progress meter visible. */
public class PluginLoader extends DialogBox {
private static PluginLoader self;
public static void load(
List<String> plugins, int loadTimeout, AsyncCallback<VoidResult> callback) {
if (plugins == null || plugins.isEmpty()) {
callback.onSuccess(VoidResult.create());
} else {
plugins = plugins.stream().filter(p -> p.endsWith(".js")).collect(Collectors.toList());
if (plugins.isEmpty()) {
callback.onSuccess(VoidResult.create());
} else {
self = new PluginLoader(loadTimeout, callback);
self.load(plugins);
self.startTimers();
self.center();
}
}
}
static void loaded() {
self.loadedOne();
}
private final int loadTimeout;
private final AsyncCallback<VoidResult> callback;
private ProgressBar progress;
private Timer show;
private Timer update;
private Timer timeout;
private boolean visible;
private PluginLoader(int loadTimeout, AsyncCallback<VoidResult> cb) {
super(/* auto hide */ false, /* modal */ true);
callback = cb;
this.loadTimeout = loadTimeout;
progress = new ProgressBar(Gerrit.C.loadingPlugins());
setStyleName(Gerrit.RESOURCES.css().errorDialog());
addStyleName(Gerrit.RESOURCES.css().loadingPluginsDialog());
}
private void load(List<String> pluginUrls) {
for (String url : pluginUrls) {
Plugin plugin = Plugin.create(url);
plugins().put(url, plugin);
ScriptInjector.fromUrl(url)
.setWindow(ScriptInjector.TOP_WINDOW)
.setCallback(new LoadCallback(plugin))
.inject();
}
}
private void startTimers() {
show =
new Timer() {
@Override
public void run() {
setText(Window.getTitle());
setWidget(progress);
setGlassEnabled(true);
getGlassElement().addClassName(Gerrit.RESOURCES.css().errorDialogGlass());
hide(true);
center();
visible = true;
}
};
show.schedule(500);
update =
new Timer() {
private int cycle;
@Override
public void run() {
progress.setValue(100 * ++cycle * 250 / loadTimeout);
}
};
update.scheduleRepeating(250);
timeout =
new Timer() {
@Override
public void run() {
finish();
}
};
timeout.schedule(loadTimeout);
}
private void loadedOne() {
boolean done = true;
for (Plugin plugin : Natives.asList(plugins().values())) {
done &= plugin.loaded();
}
if (done) {
finish();
}
}
private void finish() {
show.cancel();
update.cancel();
timeout.cancel();
self = null;
if (!hadFailures()) {
if (visible) {
progress.setValue(100);
new Timer() {
@Override
public void run() {
hide(true);
}
}.schedule(250);
} else {
hide(true);
}
}
callback.onSuccess(VoidResult.create());
}
private boolean hadFailures() {
boolean failed = false;
for (Plugin plugin : Natives.asList(plugins().values())) {
if (!plugin.success()) {
failed = true;
Exception e = plugin.failure();
String msg;
if (e != null && e instanceof CodeDownloadException) {
msg = Gerrit.M.cannotDownloadPlugin(plugin.url());
} else {
msg = Gerrit.M.pluginFailed(plugin.name());
}
hide(true);
new ErrorDialog(msg).center();
}
}
return failed;
}
private static native NativeMap<Plugin> plugins() /*-{ return $wnd.Gerrit.plugins }-*/;
private class LoadCallback implements Callback<Void, Exception> {
private final Plugin plugin;
LoadCallback(Plugin plugin) {
this.plugin = plugin;
}
@Override
public void onSuccess(Void result) {}
@Override
public void onFailure(Exception reason) {
plugin.failure(reason);
loadedOne();
}
}
}