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mobile/android/base/OrderedBroadcastHelper.java@6474c204b198 (annotated)

mobile/android/base/OrderedBroadcastHelper.java

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
michael@0	2	* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	3	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	4	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	5
michael@0	6	package org.mozilla.gecko;
michael@0	7
michael@0	8	import org.mozilla.gecko.background.common.GlobalConstants;
michael@0	9	import org.mozilla.gecko.EventDispatcher;
michael@0	10	import org.mozilla.gecko.util.GeckoEventListener;
michael@0	11
michael@0	12	import org.json.JSONException;
michael@0	13	import org.json.JSONObject;
michael@0	14
michael@0	15	import android.app.Activity;
michael@0	16
michael@0	17	import android.content.BroadcastReceiver;
michael@0	18	import android.content.Context;
michael@0	19	import android.content.Intent;
michael@0	20
michael@0	21	import android.util.Log;
michael@0	22
michael@0	23	/**
michael@0	24	* Helper class to send Android Ordered Broadcasts.
michael@0	25	*/
michael@0	26	public final class OrderedBroadcastHelper
michael@0	27	implements GeckoEventListener
michael@0	28	{
michael@0	29	public static final String LOGTAG = "GeckoOrdBroadcast";
michael@0	30
michael@0	31	public static final String SEND_EVENT = "OrderedBroadcast:Send";
michael@0	32
michael@0	33	protected final Context mContext;
michael@0	34
michael@0	35	public OrderedBroadcastHelper(Context context) {
michael@0	36	mContext = context;
michael@0	37
michael@0	38	EventDispatcher dispatcher = GeckoAppShell.getEventDispatcher();
michael@0	39	if (dispatcher == null) {
michael@0	40	Log.e(LOGTAG, "Gecko event dispatcher must not be null", new RuntimeException());
michael@0	41	return;
michael@0	42	}
michael@0	43	dispatcher.registerEventListener(SEND_EVENT, this);
michael@0	44	}
michael@0	45
michael@0	46	public synchronized void uninit() {
michael@0	47	EventDispatcher dispatcher = GeckoAppShell.getEventDispatcher();
michael@0	48	if (dispatcher == null) {
michael@0	49	Log.e(LOGTAG, "Gecko event dispatcher must not be null", new RuntimeException());
michael@0	50	return;
michael@0	51	}
michael@0	52	dispatcher.unregisterEventListener(SEND_EVENT, this);
michael@0	53	}
michael@0	54
michael@0	55	@Override
michael@0	56	public void handleMessage(String event, JSONObject message) {
michael@0	57	if (!SEND_EVENT.equals(event)) {
michael@0	58	Log.e(LOGTAG, "OrderedBroadcastHelper got unexpected message " + event);
michael@0	59	return;
michael@0	60	}
michael@0	61
michael@0	62	try {
michael@0	63	final String action = message.getString("action");
michael@0	64	if (action == null) {
michael@0	65	Log.e(LOGTAG, "action must not be null");
michael@0	66	return;
michael@0	67	}
michael@0	68
michael@0	69	final String responseEvent = message.getString("responseEvent");
michael@0	70	if (responseEvent == null) {
michael@0	71	Log.e(LOGTAG, "responseEvent must not be null");
michael@0	72	return;
michael@0	73	}
michael@0	74
michael@0	75	// It's fine if the caller-provided token is missing or null.
michael@0	76	final JSONObject token = (message.has("token") && !message.isNull("token")) ?
michael@0	77	message.getJSONObject("token") : null;
michael@0	78
michael@0	79	// A missing (undefined) permission means the intent will be limited
michael@0	80	// to the current package. A null means no permission, so any
michael@0	81	// package can receive the intent.
michael@0	82	final String permission = message.has("permission") ?
michael@0	83	(message.isNull("permission") ? null : message.getString("permission")) :
michael@0	84	GlobalConstants.PER_ANDROID_PACKAGE_PERMISSION;
michael@0	85
michael@0	86	final BroadcastReceiver resultReceiver = new BroadcastReceiver() {
michael@0	87	@Override
michael@0	88	public void onReceive(Context context, Intent intent) {
michael@0	89	int code = getResultCode();
michael@0	90
michael@0	91	if (code == Activity.RESULT_OK) {
michael@0	92	String data = getResultData();
michael@0	93
michael@0	94	JSONObject res = new JSONObject();
michael@0	95	try {
michael@0	96	res.put("action", action);
michael@0	97	res.put("token", token);
michael@0	98	res.put("data", data);
michael@0	99	} catch (JSONException e) {
michael@0	100	Log.e(LOGTAG, "Got exception in onReceive handling action " + action, e);
michael@0	101	return;
michael@0	102	}
michael@0	103
michael@0	104	GeckoEvent event = GeckoEvent.createBroadcastEvent(responseEvent, res.toString());
michael@0	105	GeckoAppShell.sendEventToGecko(event);
michael@0	106	}
michael@0	107	}
michael@0	108	};
michael@0	109
michael@0	110	Intent intent = new Intent(action);
michael@0	111	// OrderedBroadcast.jsm adds its callback ID to the caller's token;
michael@0	112	// this unwraps that wrapping.
michael@0	113	if (token != null && token.has("data")) {
michael@0	114	intent.putExtra("token", token.getString("data"));
michael@0	115	}
michael@0	116
michael@0	117	mContext.sendOrderedBroadcast(intent,
michael@0	118	permission,
michael@0	119	resultReceiver,
michael@0	120	null,
michael@0	121	Activity.RESULT_OK,
michael@0	122	null,
michael@0	123	null);
michael@0	124	} catch (JSONException e) {
michael@0	125	Log.e(LOGTAG, "Got exception in handleMessage handling event " + event, e);
michael@0	126	return;
michael@0	127	}
michael@0	128	}
michael@0	129	}