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/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko;
import org.mozilla.gecko.util.GeckoEventResponder;
import org.mozilla.gecko.util.ThreadUtils;
import org.json.JSONObject;
import android.content.Context;
import java.util.concurrent.ConcurrentLinkedQueue;
public class PromptService implements GeckoEventResponder {
private static final String LOGTAG = "GeckoPromptService";
private final ConcurrentLinkedQueue<String> mPromptQueue;
private final Context mContext;
public PromptService(Context context) {
GeckoAppShell.getEventDispatcher().registerEventListener("Prompt:Show", this);
mPromptQueue = new ConcurrentLinkedQueue<String>();
mContext = context;
}
void destroy() {
GeckoAppShell.getEventDispatcher().unregisterEventListener("Prompt:Show", this);
}
public void show(final String aTitle, final String aText, final Prompt.PromptListItem[] aMenuList,
final boolean aMultipleSelection, final Prompt.PromptCallback callback) {
// The dialog must be created on the UI thread.
ThreadUtils.postToUiThread(new Runnable() {
@Override
public void run() {
Prompt p;
if (callback != null) {
p = new Prompt(mContext, callback);
} else {
p = new Prompt(mContext, mPromptQueue);
}
p.show(aTitle, aText, aMenuList, aMultipleSelection);
}
});
}
// GeckoEventListener implementation
@Override
public void handleMessage(String event, final JSONObject message) {
// The dialog must be created on the UI thread.
ThreadUtils.postToUiThread(new Runnable() {
@Override
public void run() {
boolean isAsync = message.optBoolean("async");
Prompt p;
if (isAsync) {
p = new Prompt(mContext, new Prompt.PromptCallback() {
public void onPromptFinished(String jsonResult) {
GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("Prompt:Reply", jsonResult));
}
});
} else {
p = new Prompt(mContext, mPromptQueue);
}
p.show(message);
}
});
}
// GeckoEventResponder implementation
@Override
public String getResponse(final JSONObject origMessage) {
if (origMessage.optBoolean("async")) {
return "";
}
// we only handle one kind of message in handleMessage, and this is the
// response we provide for that message
String result;
while (null == (result = mPromptQueue.poll())) {
GeckoAppShell.processNextNativeEvent(true);
}
return result;
}
}
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