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Adds peer communication between MessageHandlers.

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This commit is contained in:
Yury Delendik 2015-10-27 10:07:20 -05:00
parent 4b243cdd89
commit acdd49f480
3 changed files with 129 additions and 57 deletions
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37
src/shared/util.js
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@ -1518,26 +1518,20 @@ PDFJS.createObjectURL = (function createObjectURLClosure() {
};
})();
function MessageHandler(name, comObj) {
this.name = name;
function MessageHandler(sourceName, targetName, comObj) {
this.sourceName = sourceName;
this.targetName = targetName;
this.comObj = comObj;
this.callbackIndex = 1;
this.postMessageTransfers = true;
var callbacksCapabilities = this.callbacksCapabilities = {};
var ah = this.actionHandler = {};
ah['console_log'] = [function ahConsoleLog(data) {
console.log.apply(console, data);
}];
ah['console_error'] = [function ahConsoleError(data) {
console.error.apply(console, data);
}];
ah['_unsupported_feature'] = [function ah_unsupportedFeature(data) {
UnsupportedManager.notify(data);
}];
comObj.onmessage = function messageHandlerComObjOnMessage(event) {
this._onComObjOnMessage = function messageHandlerComObjOnMessage(event) {
var data = event.data;
if (data.targetName !== this.sourceName) {
return;
}
if (data.isReply) {
var callbackId = data.callbackId;
if (data.callbackId in callbacksCapabilities) {
@ -1554,10 +1548,14 @@ function MessageHandler(name, comObj) {
} else if (data.action in ah) {
var action = ah[data.action];
if (data.callbackId) {
var sourceName = this.sourceName;
var targetName = data.sourceName;
Promise.resolve().then(function () {
return action[0].call(action[1], data.data);
}).then(function (result) {
comObj.postMessage({
sourceName: sourceName,
targetName: targetName,
isReply: true,
callbackId: data.callbackId,
data: result
@ -1568,6 +1566,8 @@ function MessageHandler(name, comObj) {
reason = reason + '';
}
comObj.postMessage({
sourceName: sourceName,
targetName: targetName,
isReply: true,
callbackId: data.callbackId,
error: reason
@ -1579,7 +1579,8 @@ function MessageHandler(name, comObj) {
} else {
error('Unknown action from worker: ' + data.action);
}
};
}.bind(this);
comObj.addEventListener('message', this._onComObjOnMessage);
}
MessageHandler.prototype = {
@ -1598,6 +1599,8 @@ MessageHandler.prototype = {
*/
send: function messageHandlerSend(actionName, data, transfers) {
var message = {
sourceName: this.sourceName,
targetName: this.targetName,
action: actionName,
data: data
};
@ -1615,6 +1618,8 @@ MessageHandler.prototype = {
function messageHandlerSendWithPromise(actionName, data, transfers) {
var callbackId = this.callbackIndex++;
var message = {
sourceName: this.sourceName,
targetName: this.targetName,
action: actionName,
data: data,
callbackId: callbackId
@ -1640,6 +1645,10 @@ MessageHandler.prototype = {
} else {
this.comObj.postMessage(message);
}
},
destroy: function () {
this.comObj.removeEventListener('message', this._onComObjOnMessage);
}
};