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yay, they talk and they don't fight

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This commit is contained in:
Caleb James DeLisle
2017-08-10 18:31:44 +02:00
parent e786a66ff3
commit 1e56fa31c0
7 changed files with 99 additions and 43 deletions
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36
www/common/sframe-channel.js
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@@ -18,6 +18,7 @@ define([
var chan = {};
// Send a query. channel.query('Q_SOMETHING', { args: "whatever" }, function (reply) { ... });
chan.query = function (q, content, cb) {
if (!otherWindow) { throw new Error('not yet initialized'); }
if (!SFrameProtocol[q]) {
@@ -40,6 +41,7 @@ define([
}), '*');
};
// Fire an event. channel.event('EV_SOMETHING', { args: "whatever" });
var event = chan.event = function (e, content) {
if (!otherWindow) { throw new Error('not yet initialized'); }
if (!SFrameProtocol[e]) {
@@ -51,13 +53,17 @@ define([
otherWindow.postMessage(JSON.stringify({ content: content, q: e }), '*');
};
// Be notified on query or event. channel.on('EV_SOMETHING', function (args, reply) { ... });
// If the type is a query, your handler will be invoked with a reply function that takes
// one argument (the content to reply with).
chan.on = function (queryType, handler, quiet) {
if (!otherWindow) { throw new Error('not yet initialized'); }
if (!otherWindow && !quiet) { throw new Error('not yet initialized'); }
if (!SFrameProtocol[queryType]) {
throw new Error('please only register handlers which are defined in sframe-protocol.js');
}
(handlers[queryType] = handlers[queryType] || []).push(function (data, msg) {
handler(data.content, function (replyContent) {
if (queryType.indexOf('Q_') !== 0) { throw new Error("replies to events are invalid"); }
msg.source.postMessage(JSON.stringify({
txid: data.txid,
content: replyContent
@@ -69,25 +75,35 @@ define([
}
};
chan.whenReg = function (queryType, handler) {
// If a particular handler is registered, call the callback immediately, otherwise it will be called
// when that handler is first registered.
// channel.whenReg('Q_SOMETHING', function () { ...query Q_SOMETHING?... });
chan.whenReg = function (queryType, cb, always) {
if (!otherWindow) { throw new Error('not yet initialized'); }
if (!SFrameProtocol[queryType]) {
throw new Error('please only register handlers which are defined in sframe-protocol.js');
}
var reg = always;
if (insideHandlers.indexOf(queryType) > -1) {
handler();
cb();
} else {
(callWhenRegistered[queryType] = callWhenRegistered[queryType] || []).push(handler);
reg = true;
}
if (reg) {
(callWhenRegistered[queryType] = callWhenRegistered[queryType] || []).push(cb);
}
};
(handlers['EV_REGISTER_HANDLER'] = handlers['EV_REGISTER_HANDLER'] || []).push(function (data) {
if (callWhenRegistered[data.content]) {
callWhenRegistered[data.content].forEach(function (f) { f(); });
delete callWhenRegistered[data.content];
// Same as whenReg except it will invoke every time there is another registration, not just once.
chan.onReg = function (queryType, cb) { chan.whenReg(queryType, cb, true); };
chan.on('EV_REGISTER_HANDLER', function (content) {
if (callWhenRegistered[content]) {
callWhenRegistered[content].forEach(function (f) { f(); });
delete callWhenRegistered[content];
}
insideHandlers.push(data.content);
});
insideHandlers.push(content);
}, true);
var intr;
var txid;