angular2
Version:
Angular 2 - a web framework for modern web apps
368 lines • 14.6 kB
JavaScript
'use strict';var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") return Reflect.decorate(decorators, target, key, desc);
switch (arguments.length) {
case 2: return decorators.reduceRight(function(o, d) { return (d && d(o)) || o; }, target);
case 3: return decorators.reduceRight(function(o, d) { return (d && d(target, key)), void 0; }, void 0);
case 4: return decorators.reduceRight(function(o, d) { return (d && d(target, key, o)) || o; }, desc);
}
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var collection_1 = require('angular2/src/facade/collection');
var lang_1 = require('angular2/src/facade/lang');
var exceptions_1 = require('angular2/src/facade/exceptions');
var DefaultKeyValueDifferFactory = (function () {
function DefaultKeyValueDifferFactory() {
}
DefaultKeyValueDifferFactory.prototype.supports = function (obj) { return obj instanceof Map || lang_1.isJsObject(obj); };
DefaultKeyValueDifferFactory.prototype.create = function (cdRef) { return new DefaultKeyValueDiffer(); };
DefaultKeyValueDifferFactory = __decorate([
lang_1.CONST(),
__metadata('design:paramtypes', [])
], DefaultKeyValueDifferFactory);
return DefaultKeyValueDifferFactory;
})();
exports.DefaultKeyValueDifferFactory = DefaultKeyValueDifferFactory;
var DefaultKeyValueDiffer = (function () {
function DefaultKeyValueDiffer() {
this._records = new Map();
this._mapHead = null;
this._previousMapHead = null;
this._changesHead = null;
this._changesTail = null;
this._additionsHead = null;
this._additionsTail = null;
this._removalsHead = null;
this._removalsTail = null;
}
Object.defineProperty(DefaultKeyValueDiffer.prototype, "isDirty", {
get: function () {
return this._additionsHead !== null || this._changesHead !== null ||
this._removalsHead !== null;
},
enumerable: true,
configurable: true
});
DefaultKeyValueDiffer.prototype.forEachItem = function (fn) {
var record;
for (record = this._mapHead; record !== null; record = record._next) {
fn(record);
}
};
DefaultKeyValueDiffer.prototype.forEachPreviousItem = function (fn) {
var record;
for (record = this._previousMapHead; record !== null; record = record._nextPrevious) {
fn(record);
}
};
DefaultKeyValueDiffer.prototype.forEachChangedItem = function (fn) {
var record;
for (record = this._changesHead; record !== null; record = record._nextChanged) {
fn(record);
}
};
DefaultKeyValueDiffer.prototype.forEachAddedItem = function (fn) {
var record;
for (record = this._additionsHead; record !== null; record = record._nextAdded) {
fn(record);
}
};
DefaultKeyValueDiffer.prototype.forEachRemovedItem = function (fn) {
var record;
for (record = this._removalsHead; record !== null; record = record._nextRemoved) {
fn(record);
}
};
DefaultKeyValueDiffer.prototype.diff = function (map) {
if (lang_1.isBlank(map))
map = collection_1.MapWrapper.createFromPairs([]);
if (!(map instanceof Map || lang_1.isJsObject(map))) {
throw new exceptions_1.BaseException("Error trying to diff '" + map + "'");
}
if (this.check(map)) {
return this;
}
else {
return null;
}
};
DefaultKeyValueDiffer.prototype.onDestroy = function () { };
DefaultKeyValueDiffer.prototype.check = function (map) {
var _this = this;
this._reset();
var records = this._records;
var oldSeqRecord = this._mapHead;
var lastOldSeqRecord = null;
var lastNewSeqRecord = null;
var seqChanged = false;
this._forEach(map, function (value, key) {
var newSeqRecord;
if (oldSeqRecord !== null && key === oldSeqRecord.key) {
newSeqRecord = oldSeqRecord;
if (!lang_1.looseIdentical(value, oldSeqRecord.currentValue)) {
oldSeqRecord.previousValue = oldSeqRecord.currentValue;
oldSeqRecord.currentValue = value;
_this._addToChanges(oldSeqRecord);
}
}
else {
seqChanged = true;
if (oldSeqRecord !== null) {
oldSeqRecord._next = null;
_this._removeFromSeq(lastOldSeqRecord, oldSeqRecord);
_this._addToRemovals(oldSeqRecord);
}
if (records.has(key)) {
newSeqRecord = records.get(key);
}
else {
newSeqRecord = new KVChangeRecord(key);
records.set(key, newSeqRecord);
newSeqRecord.currentValue = value;
_this._addToAdditions(newSeqRecord);
}
}
if (seqChanged) {
if (_this._isInRemovals(newSeqRecord)) {
_this._removeFromRemovals(newSeqRecord);
}
if (lastNewSeqRecord == null) {
_this._mapHead = newSeqRecord;
}
else {
lastNewSeqRecord._next = newSeqRecord;
}
}
lastOldSeqRecord = oldSeqRecord;
lastNewSeqRecord = newSeqRecord;
oldSeqRecord = oldSeqRecord === null ? null : oldSeqRecord._next;
});
this._truncate(lastOldSeqRecord, oldSeqRecord);
return this.isDirty;
};
/** @internal */
DefaultKeyValueDiffer.prototype._reset = function () {
if (this.isDirty) {
var record;
// Record the state of the mapping
for (record = this._previousMapHead = this._mapHead; record !== null; record = record._next) {
record._nextPrevious = record._next;
}
for (record = this._changesHead; record !== null; record = record._nextChanged) {
record.previousValue = record.currentValue;
}
for (record = this._additionsHead; record != null; record = record._nextAdded) {
record.previousValue = record.currentValue;
}
// todo(vicb) once assert is supported
// assert(() {
// var r = _changesHead;
// while (r != null) {
// var nextRecord = r._nextChanged;
// r._nextChanged = null;
// r = nextRecord;
// }
//
// r = _additionsHead;
// while (r != null) {
// var nextRecord = r._nextAdded;
// r._nextAdded = null;
// r = nextRecord;
// }
//
// r = _removalsHead;
// while (r != null) {
// var nextRecord = r._nextRemoved;
// r._nextRemoved = null;
// r = nextRecord;
// }
//
// return true;
//});
this._changesHead = this._changesTail = null;
this._additionsHead = this._additionsTail = null;
this._removalsHead = this._removalsTail = null;
}
};
/** @internal */
DefaultKeyValueDiffer.prototype._truncate = function (lastRecord, record) {
while (record !== null) {
if (lastRecord === null) {
this._mapHead = null;
}
else {
lastRecord._next = null;
}
var nextRecord = record._next;
// todo(vicb) assert
// assert((() {
// record._next = null;
// return true;
//}));
this._addToRemovals(record);
lastRecord = record;
record = nextRecord;
}
for (var rec = this._removalsHead; rec !== null; rec = rec._nextRemoved) {
rec.previousValue = rec.currentValue;
rec.currentValue = null;
this._records.delete(rec.key);
}
};
/** @internal */
DefaultKeyValueDiffer.prototype._isInRemovals = function (record) {
return record === this._removalsHead || record._nextRemoved !== null ||
record._prevRemoved !== null;
};
/** @internal */
DefaultKeyValueDiffer.prototype._addToRemovals = function (record) {
// todo(vicb) assert
// assert(record._next == null);
// assert(record._nextAdded == null);
// assert(record._nextChanged == null);
// assert(record._nextRemoved == null);
// assert(record._prevRemoved == null);
if (this._removalsHead === null) {
this._removalsHead = this._removalsTail = record;
}
else {
this._removalsTail._nextRemoved = record;
record._prevRemoved = this._removalsTail;
this._removalsTail = record;
}
};
/** @internal */
DefaultKeyValueDiffer.prototype._removeFromSeq = function (prev, record) {
var next = record._next;
if (prev === null) {
this._mapHead = next;
}
else {
prev._next = next;
}
// todo(vicb) assert
// assert((() {
// record._next = null;
// return true;
//})());
};
/** @internal */
DefaultKeyValueDiffer.prototype._removeFromRemovals = function (record) {
// todo(vicb) assert
// assert(record._next == null);
// assert(record._nextAdded == null);
// assert(record._nextChanged == null);
var prev = record._prevRemoved;
var next = record._nextRemoved;
if (prev === null) {
this._removalsHead = next;
}
else {
prev._nextRemoved = next;
}
if (next === null) {
this._removalsTail = prev;
}
else {
next._prevRemoved = prev;
}
record._prevRemoved = record._nextRemoved = null;
};
/** @internal */
DefaultKeyValueDiffer.prototype._addToAdditions = function (record) {
// todo(vicb): assert
// assert(record._next == null);
// assert(record._nextAdded == null);
// assert(record._nextChanged == null);
// assert(record._nextRemoved == null);
// assert(record._prevRemoved == null);
if (this._additionsHead === null) {
this._additionsHead = this._additionsTail = record;
}
else {
this._additionsTail._nextAdded = record;
this._additionsTail = record;
}
};
/** @internal */
DefaultKeyValueDiffer.prototype._addToChanges = function (record) {
// todo(vicb) assert
// assert(record._nextAdded == null);
// assert(record._nextChanged == null);
// assert(record._nextRemoved == null);
// assert(record._prevRemoved == null);
if (this._changesHead === null) {
this._changesHead = this._changesTail = record;
}
else {
this._changesTail._nextChanged = record;
this._changesTail = record;
}
};
DefaultKeyValueDiffer.prototype.toString = function () {
var items = [];
var previous = [];
var changes = [];
var additions = [];
var removals = [];
var record;
for (record = this._mapHead; record !== null; record = record._next) {
items.push(lang_1.stringify(record));
}
for (record = this._previousMapHead; record !== null; record = record._nextPrevious) {
previous.push(lang_1.stringify(record));
}
for (record = this._changesHead; record !== null; record = record._nextChanged) {
changes.push(lang_1.stringify(record));
}
for (record = this._additionsHead; record !== null; record = record._nextAdded) {
additions.push(lang_1.stringify(record));
}
for (record = this._removalsHead; record !== null; record = record._nextRemoved) {
removals.push(lang_1.stringify(record));
}
return "map: " + items.join(', ') + "\n" + "previous: " + previous.join(', ') + "\n" +
"additions: " + additions.join(', ') + "\n" + "changes: " + changes.join(', ') + "\n" +
"removals: " + removals.join(', ') + "\n";
};
/** @internal */
DefaultKeyValueDiffer.prototype._forEach = function (obj, fn) {
if (obj instanceof Map) {
obj.forEach(fn);
}
else {
collection_1.StringMapWrapper.forEach(obj, fn);
}
};
return DefaultKeyValueDiffer;
})();
exports.DefaultKeyValueDiffer = DefaultKeyValueDiffer;
var KVChangeRecord = (function () {
function KVChangeRecord(key) {
this.key = key;
this.previousValue = null;
this.currentValue = null;
/** @internal */
this._nextPrevious = null;
/** @internal */
this._next = null;
/** @internal */
this._nextAdded = null;
/** @internal */
this._nextRemoved = null;
/** @internal */
this._prevRemoved = null;
/** @internal */
this._nextChanged = null;
}
KVChangeRecord.prototype.toString = function () {
return lang_1.looseIdentical(this.previousValue, this.currentValue) ?
lang_1.stringify(this.key) :
(lang_1.stringify(this.key) + '[' + lang_1.stringify(this.previousValue) + '->' +
lang_1.stringify(this.currentValue) + ']');
};
return KVChangeRecord;
})();
exports.KVChangeRecord = KVChangeRecord;
//# sourceMappingURL=default_keyvalue_differ.js.map