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45 lines
1.4 KiB
JavaScript
45 lines
1.4 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict"
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const { classes: Cc, interfaces: Ci, utils: Cu } = Components;
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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this.EXPORTED_SYMBOLS = ["sendMessageToJava"];
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XPCOMUtils.defineLazyServiceGetter(this, "uuidgen",
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"@mozilla.org/uuid-generator;1",
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"nsIUUIDGenerator");
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function sendMessageToJava(aMessage, aCallback) {
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if (aCallback) {
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let id = uuidgen.generateUUID().toString();
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let obs = {
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observe: function(aSubject, aTopic, aData) {
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let data = JSON.parse(aData);
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if (data.__guid__ != id) {
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return;
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}
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Services.obs.removeObserver(obs, aMessage.type + ":Response", false);
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if (data.status === "cancel") {
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// No Java-side listeners handled our callback.
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return;
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}
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aCallback(data.status === "success" ? data.response : null,
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data.status === "error" ? data.response : null);
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}
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}
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aMessage.__guid__ = id;
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Services.obs.addObserver(obs, aMessage.type + ":Response", false);
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}
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return Services.androidBridge.handleGeckoMessage(aMessage);
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}
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