зеркало из https://github.com/mozilla/pluotsorbet.git
113 строки
2.6 KiB
JavaScript
113 строки
2.6 KiB
JavaScript
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
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var DumbPipe = {
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recipients: {},
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nextPipeID: 0,
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open: function(type, message, recipient) {
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var pipeID = this.nextPipeID++;
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this.send({
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command: "open",
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type: type,
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pipeID: pipeID,
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message: message,
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});
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this.recipients[pipeID] = recipient;
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// Return a function that can be used to send a message to the other side.
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var sender = function(message) {
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var envelope = {
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command: "message",
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pipeID: pipeID,
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message: message,
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};
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//console.log("inner send: " + JSON.stringify(envelope));
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this.send(envelope);
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}.bind(this);
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sender.pipeID = pipeID;
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return sender;
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},
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close: function(sender) {
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delete this.recipients[sender.pipeID];
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this.send({
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command: "close",
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pipeID: sender.pipeID,
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});
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},
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sendQueue: [],
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isRunningSendQueue: false,
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send: function(envelope) {
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this.sendQueue.push(envelope);
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if (!this.isRunningSendQueue) {
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this.isRunningSendQueue = true;
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window.setZeroTimeout(this.runSendQueue.bind(this));
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}
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},
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runSendQueue: function() {
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alert(JSON.stringify(this.sendQueue.shift()));
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if (this.sendQueue.length > 0) {
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window.setZeroTimeout(this.runSendQueue.bind(this));
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} else {
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this.isRunningSendQueue = false;
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}
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},
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receiveMessage: function(event) {
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var envelope = event.data;
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if (typeof envelope !== "object" || !("pipeID" in envelope)) {
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return;
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}
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if (this.recipients[envelope.pipeID]) {
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try {
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this.recipients[envelope.pipeID](envelope.message);
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} catch(ex) {
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console.error(ex + "\n" + ex.stack);
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}
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} else {
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console.warn("nonexistent pipe " + envelope.pipeID + " received message " +
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JSON.stringify(envelope.message));
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}
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},
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};
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window.addEventListener("message", DumbPipe.receiveMessage.bind(DumbPipe), false);
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// If "mozbrowser" isn't enabled on the frame we're loaded in, then override
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// the alert/prompt functions to funnel messages to the endpoint in the parent.
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if (window.parent !== window) {
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alert = function(message) {
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window.parent.DumbPipe.handleEvent({
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detail: {
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promptType: "alert",
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message: message,
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}
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});
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};
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prompt = function(message) {
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var event = {
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detail: {
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promptType: "prompt",
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message: message,
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unblock: function() {},
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}
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};
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window.parent.DumbPipe.handleEvent(event);
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return event.detail.returnValue;
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};
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}
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