ace-code-editor
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Ajax.org Code Editor is a full featured source code highlighting editor that powers the Cloud9 IDE
259 lines (223 loc) • 8.6 kB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
* Distributed under the BSD license:
*
* Copyright (c) 2010, Ajax.org B.V.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Ajax.org B.V. nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ***** END LICENSE BLOCK ***** */
define(function(require, exports, module) {
"use strict";
var oop = require("../lib/oop");
var net = require("../lib/net");
var EventEmitter = require("../lib/event_emitter").EventEmitter;
var config = require("../config");
var WorkerClient = function(topLevelNamespaces, mod, classname, workerUrl) {
this.$sendDeltaQueue = this.$sendDeltaQueue.bind(this);
this.changeListener = this.changeListener.bind(this);
this.onMessage = this.onMessage.bind(this);
// nameToUrl is renamed to toUrl in requirejs 2
if (require.nameToUrl && !require.toUrl)
require.toUrl = require.nameToUrl;
if (config.get("packaged") || !require.toUrl) {
workerUrl = workerUrl || config.moduleUrl(mod, "worker");
} else {
var normalizePath = this.$normalizePath;
workerUrl = workerUrl || normalizePath(require.toUrl("ace/worker/worker.js", null, "_"));
var tlns = {};
topLevelNamespaces.forEach(function(ns) {
tlns[ns] = normalizePath(require.toUrl(ns, null, "_").replace(/(\.js)?(\?.*)?$/, ""));
});
}
try {
this.$worker = new Worker(workerUrl);
} catch(e) {
if (e instanceof window.DOMException) {
// Likely same origin problem. Use importScripts from a shim Worker
var blob = this.$workerBlob(workerUrl);
var URL = window.URL || window.webkitURL;
var blobURL = URL.createObjectURL(blob);
this.$worker = new Worker(blobURL);
URL.revokeObjectURL(blobURL);
} else {
throw e;
}
}
this.$worker.postMessage({
init : true,
tlns : tlns,
module : mod,
classname : classname
});
this.callbackId = 1;
this.callbacks = {};
this.$worker.onmessage = this.onMessage;
};
(function(){
oop.implement(this, EventEmitter);
this.onMessage = function(e) {
var msg = e.data;
switch(msg.type) {
case "event":
this._signal(msg.name, {data: msg.data});
break;
case "call":
var callback = this.callbacks[msg.id];
if (callback) {
callback(msg.data);
delete this.callbacks[msg.id];
}
break;
case "error":
this.reportError(msg.data);
break;
case "log":
window.console && console.log && console.log.apply(console, msg.data);
break;
}
};
this.reportError = function(err) {
window.console && console.error && console.error(err);
};
this.$normalizePath = function(path) {
return net.qualifyURL(path);
};
this.terminate = function() {
this._signal("terminate", {});
this.deltaQueue = null;
this.$worker.terminate();
this.$worker = null;
if (this.$doc)
this.$doc.off("change", this.changeListener);
this.$doc = null;
};
this.send = function(cmd, args) {
this.$worker.postMessage({command: cmd, args: args});
};
this.call = function(cmd, args, callback) {
if (callback) {
var id = this.callbackId++;
this.callbacks[id] = callback;
args.push(id);
}
this.send(cmd, args);
};
this.emit = function(event, data) {
try {
// firefox refuses to clone objects which have function properties
// TODO: cleanup event
this.$worker.postMessage({event: event, data: {data: data.data}});
}
catch(ex) {
console.error(ex.stack);
}
};
this.attachToDocument = function(doc) {
if(this.$doc)
this.terminate();
this.$doc = doc;
this.call("setValue", [doc.getValue()]);
doc.on("change", this.changeListener);
};
this.changeListener = function(delta) {
if (!this.deltaQueue) {
this.deltaQueue = [];
setTimeout(this.$sendDeltaQueue, 0);
}
if (delta.action == "insert")
this.deltaQueue.push(delta.start, delta.lines);
else
this.deltaQueue.push(delta.start, delta.end);
};
this.$sendDeltaQueue = function() {
var q = this.deltaQueue;
if (!q) return;
this.deltaQueue = null;
if (q.length > 50 && q.length > this.$doc.getLength() >> 1) {
this.call("setValue", [this.$doc.getValue()]);
} else
this.emit("change", {data: q});
};
this.$workerBlob = function(workerUrl) {
// workerUrl can be protocol relative
// importScripts only takes fully qualified urls
var script = "importScripts('" + net.qualifyURL(workerUrl) + "');";
try {
return new Blob([script], {"type": "application/javascript"});
} catch (e) { // Backwards-compatibility
var BlobBuilder = window.BlobBuilder || window.WebKitBlobBuilder || window.MozBlobBuilder;
var blobBuilder = new BlobBuilder();
blobBuilder.append(script);
return blobBuilder.getBlob("application/javascript");
}
};
}).call(WorkerClient.prototype);
var UIWorkerClient = function(topLevelNamespaces, mod, classname) {
this.$sendDeltaQueue = this.$sendDeltaQueue.bind(this);
this.changeListener = this.changeListener.bind(this);
this.callbackId = 1;
this.callbacks = {};
this.messageBuffer = [];
var main = null;
var emitSync = false;
var sender = Object.create(EventEmitter);
var _self = this;
this.$worker = {};
this.$worker.terminate = function() {};
this.$worker.postMessage = function(e) {
_self.messageBuffer.push(e);
if (main) {
if (emitSync)
setTimeout(processNext);
else
processNext();
}
};
this.setEmitSync = function(val) { emitSync = val };
var processNext = function() {
var msg = _self.messageBuffer.shift();
if (msg.command)
main[msg.command].apply(main, msg.args);
else if (msg.event)
sender._signal(msg.event, msg.data);
};
sender.postMessage = function(msg) {
_self.onMessage({data: msg});
};
sender.callback = function(data, callbackId) {
this.postMessage({type: "call", id: callbackId, data: data});
};
sender.emit = function(name, data) {
this.postMessage({type: "event", name: name, data: data});
};
config.loadModule(["worker", mod], function(Main) {
main = new Main[classname](sender);
while (_self.messageBuffer.length)
processNext();
});
};
UIWorkerClient.prototype = WorkerClient.prototype;
exports.UIWorkerClient = UIWorkerClient;
exports.WorkerClient = WorkerClient;
});