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// Copyright (C) 2008 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;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.InlineLabel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwtjsonrpc.client.RpcCompleteEvent;
import com.google.gwtjsonrpc.client.RpcCompleteHandler;
import com.google.gwtjsonrpc.client.RpcStartEvent;
import com.google.gwtjsonrpc.client.RpcStartHandler;
public class RpcStatus implements RpcStartHandler, RpcCompleteHandler {
private static int hideDepth;
/** Execute code, hiding the RPCs they execute from being shown visually. */
public static void hide(final Runnable run) {
try {
hideDepth++;
run.run();
} finally {
hideDepth--;
}
}
private final Label loading;
private int activeCalls;
RpcStatus(final Panel p) {
final FlowPanel r = new FlowPanel();
r.setStyleName("gerrit-RpcStatusPanel");
p.add(r);
loading = new InlineLabel();
loading.setText(Gerrit.C.rpcStatusLoading());
loading.setStyleName("gerrit-RpcStatus");
loading.addStyleDependentName("Loading");
loading.setVisible(false);
r.add(loading);
}
@Override
public void onRpcStart(final RpcStartEvent event) {
if (++activeCalls == 1) {
if (hideDepth == 0) {
loading.setVisible(true);
}
}
}
@Override
public void onRpcComplete(final RpcCompleteEvent event) {
if (--activeCalls == 0) {
loading.setVisible(false);
}
}
}
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