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Use ES6 style class

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This commit is contained in:
Kevin Sawicki 2016-01-15 14:15:42 -08:00
parent 02f055b784
commit aab1568682
1 changed files with 100 additions and 102 deletions
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202
atom/browser/lib/objects-registry.js
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@ -1,110 +1,108 @@
'use strict';
const EventEmitter = require('events').EventEmitter; const EventEmitter = require('events').EventEmitter;
const util = require('util');
const v8Util = process.atomBinding('v8_util');
function ObjectsRegistry() { class ObjectsRegistry extends EventEmitter {
ObjectsRegistry.super_.call(this); constructor() {
super();
this.setMaxListeners(Number.MAX_VALUE); this.setMaxListeners(Number.MAX_VALUE);
this.nextId = 0; this.nextId = 0;
// Stores all objects by ref-counting. // Stores all objects by ref-counting.
// (id) => {object, count} // (id) => {object, count}
this.storage = {}; this.storage = {};
// Stores the IDs of objects referenced by WebContents. // Stores the IDs of objects referenced by WebContents.
// (webContentsId) => {(id) => (count)} // (webContentsId) => {(id) => (count)}
this.owners = {}; this.owners = {};
}
// Register a new object, the object would be kept referenced until you release
// it explicitly.
add(webContentsId, obj) {
var base, base1, id;
id = this.saveToStorage(obj);
// Remember the owner.
if ((base = this.owners)[webContentsId] == null) {
base[webContentsId] = {};
}
if ((base1 = this.owners[webContentsId])[id] == null) {
base1[id] = 0;
}
this.owners[webContentsId][id]++;
// Returns object's id
return id;
}
// Get an object according to its ID.
get(id) {
var ref;
return (ref = this.storage[id]) != null ? ref.object : void 0;
}
// Dereference an object according to its ID.
remove(webContentsId, id) {
var pointer;
this.dereference(id, 1);
// Also reduce the count in owner.
pointer = this.owners[webContentsId];
if (pointer == null) {
return;
}
--pointer[id];
if (pointer[id] === 0) {
return delete pointer[id];
}
}
// Clear all references to objects refrenced by the WebContents.
clear(webContentsId) {
var count, id, ref;
this.emit("clear-" + webContentsId);
if (this.owners[webContentsId] == null) {
return;
}
ref = this.owners[webContentsId];
for (id in ref) {
count = ref[id];
this.dereference(id, count);
}
return delete this.owners[webContentsId];
}
// Private: Saves the object into storage and assigns an ID for it.
saveToStorage(object) {
var id;
id = v8Util.getHiddenValue(object, 'atomId');
if (!id) {
id = ++this.nextId;
this.storage[id] = {
count: 0,
object: object
};
v8Util.setHiddenValue(object, 'atomId', id);
}
++this.storage[id].count;
return id;
}
// Private: Dereference the object from store.
dereference(id, count) {
var pointer;
pointer = this.storage[id];
if (pointer == null) {
return;
}
pointer.count -= count;
if (pointer.count === 0) {
v8Util.deleteHiddenValue(pointer.object, 'atomId');
return delete this.storage[id];
}
}
} }
util.inherits(ObjectsRegistry, EventEmitter);
// Register a new object, the object would be kept referenced until you release
// it explicitly.
ObjectsRegistry.prototype.add = function(webContentsId, obj) {
var base, base1, id;
id = this.saveToStorage(obj);
// Remember the owner.
if ((base = this.owners)[webContentsId] == null) {
base[webContentsId] = {};
}
if ((base1 = this.owners[webContentsId])[id] == null) {
base1[id] = 0;
}
this.owners[webContentsId][id]++;
// Returns object's id
return id;
};
// Get an object according to its ID.
ObjectsRegistry.prototype.get = function(id) {
var ref;
return (ref = this.storage[id]) != null ? ref.object : void 0;
};
// Dereference an object according to its ID.
ObjectsRegistry.prototype.remove = function(webContentsId, id) {
var pointer;
this.dereference(id, 1);
// Also reduce the count in owner.
pointer = this.owners[webContentsId];
if (pointer == null) {
return;
}
--pointer[id];
if (pointer[id] === 0) {
return delete pointer[id];
}
};
// Clear all references to objects refrenced by the WebContents.
ObjectsRegistry.prototype.clear = function(webContentsId) {
var count, id, ref;
this.emit("clear-" + webContentsId);
if (this.owners[webContentsId] == null) {
return;
}
ref = this.owners[webContentsId];
for (id in ref) {
count = ref[id];
this.dereference(id, count);
}
return delete this.owners[webContentsId];
};
// Private: Saves the object into storage and assigns an ID for it.
ObjectsRegistry.prototype.saveToStorage = function(object) {
var id;
id = v8Util.getHiddenValue(object, 'atomId');
if (!id) {
id = ++this.nextId;
this.storage[id] = {
count: 0,
object: object
};
v8Util.setHiddenValue(object, 'atomId', id);
}
++this.storage[id].count;
return id;
};
// Private: Dereference the object from store.
ObjectsRegistry.prototype.dereference = function(id, count) {
var pointer;
pointer = this.storage[id];
if (pointer == null) {
return;
}
pointer.count -= count;
if (pointer.count === 0) {
v8Util.deleteHiddenValue(pointer.object, 'atomId');
return delete this.storage[id];
}
};
module.exports = new ObjectsRegistry; module.exports = new ObjectsRegistry;