angular2
Version:
Angular 2 - a web framework for modern web apps
367 lines • 44.4 kB
JavaScript
'use strict';"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
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 KeyValueChangeRecord(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 KeyValueChangeRecord = (function () {
function KeyValueChangeRecord(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;
}
KeyValueChangeRecord.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 KeyValueChangeRecord;
}());
exports.KeyValueChangeRecord = KeyValueChangeRecord;
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{MapWrapper, StringMapWrapper} from 'angular2/src/facade/collection';\nimport {stringify, looseIdentical, isJsObject, CONST, isBlank} from 'angular2/src/facade/lang';\nimport {BaseException} from 'angular2/src/facade/exceptions';\nimport {ChangeDetectorRef} from '../change_detector_ref';\nimport {KeyValueDiffer, KeyValueDifferFactory} from '../differs/keyvalue_differs';\n\n@CONST()\nexport class DefaultKeyValueDifferFactory implements KeyValueDifferFactory {\n  supports(obj: any): boolean { return obj instanceof Map || isJsObject(obj); }\n\n  create(cdRef: ChangeDetectorRef): KeyValueDiffer { return new DefaultKeyValueDiffer(); }\n}\n\nexport class DefaultKeyValueDiffer implements KeyValueDiffer {\n  private _records: Map<any, any> = new Map();\n  private _mapHead: KeyValueChangeRecord = null;\n  private _previousMapHead: KeyValueChangeRecord = null;\n  private _changesHead: KeyValueChangeRecord = null;\n  private _changesTail: KeyValueChangeRecord = null;\n  private _additionsHead: KeyValueChangeRecord = null;\n  private _additionsTail: KeyValueChangeRecord = null;\n  private _removalsHead: KeyValueChangeRecord = null;\n  private _removalsTail: KeyValueChangeRecord = null;\n\n  get isDirty(): boolean {\n    return this._additionsHead !== null || this._changesHead !== null ||\n           this._removalsHead !== null;\n  }\n\n  forEachItem(fn: Function) {\n    var record: KeyValueChangeRecord;\n    for (record = this._mapHead; record !== null; record = record._next) {\n      fn(record);\n    }\n  }\n\n  forEachPreviousItem(fn: Function) {\n    var record: KeyValueChangeRecord;\n    for (record = this._previousMapHead; record !== null; record = record._nextPrevious) {\n      fn(record);\n    }\n  }\n\n  forEachChangedItem(fn: Function) {\n    var record: KeyValueChangeRecord;\n    for (record = this._changesHead; record !== null; record = record._nextChanged) {\n      fn(record);\n    }\n  }\n\n  forEachAddedItem(fn: Function) {\n    var record: KeyValueChangeRecord;\n    for (record = this._additionsHead; record !== null; record = record._nextAdded) {\n      fn(record);\n    }\n  }\n\n  forEachRemovedItem(fn: Function) {\n    var record: KeyValueChangeRecord;\n    for (record = this._removalsHead; record !== null; record = record._nextRemoved) {\n      fn(record);\n    }\n  }\n\n  diff(map: Map<any, any>): any {\n    if (isBlank(map)) map = MapWrapper.createFromPairs([]);\n    if (!(map instanceof Map || isJsObject(map))) {\n      throw new BaseException(`Error trying to diff '${map}'`);\n    }\n\n    if (this.check(map)) {\n      return this;\n    } else {\n      return null;\n    }\n  }\n\n  onDestroy() {}\n\n  check(map: Map<any, any>): boolean {\n    this._reset();\n    var records = this._records;\n    var oldSeqRecord: KeyValueChangeRecord = this._mapHead;\n    var lastOldSeqRecord: KeyValueChangeRecord = null;\n    var lastNewSeqRecord: KeyValueChangeRecord = null;\n    var seqChanged: boolean = false;\n\n    this._forEach(map, (value, key) => {\n      var newSeqRecord;\n      if (oldSeqRecord !== null && key === oldSeqRecord.key) {\n        newSeqRecord = oldSeqRecord;\n        if (!looseIdentical(value, oldSeqRecord.currentValue)) {\n          oldSeqRecord.previousValue = oldSeqRecord.currentValue;\n          oldSeqRecord.currentValue = value;\n          this._addToChanges(oldSeqRecord);\n        }\n      } else {\n        seqChanged = true;\n        if (oldSeqRecord !== null) {\n          oldSeqRecord._next = null;\n          this._removeFromSeq(lastOldSeqRecord, oldSeqRecord);\n          this._addToRemovals(oldSeqRecord);\n        }\n        if (records.has(key)) {\n          newSeqRecord = records.get(key);\n        } else {\n          newSeqRecord = new KeyValueChangeRecord(key);\n          records.set(key, newSeqRecord);\n          newSeqRecord.currentValue = value;\n          this._addToAdditions(newSeqRecord);\n        }\n      }\n\n      if (seqChanged) {\n        if (this._isInRemovals(newSeqRecord)) {\n          this._removeFromRemovals(newSeqRecord);\n        }\n        if (lastNewSeqRecord == null) {\n          this._mapHead = newSeqRecord;\n        } else {\n          lastNewSeqRecord._next = newSeqRecord;\n        }\n      }\n      lastOldSeqRecord = oldSeqRecord;\n      lastNewSeqRecord = newSeqRecord;\n      oldSeqRecord = oldSeqRecord === null ? null : oldSeqRecord._next;\n    });\n    this._truncate(lastOldSeqRecord, oldSeqRecord);\n    return this.isDirty;\n  }\n\n  /** @internal */\n  _reset() {\n    if (this.isDirty) {\n      var record: KeyValueChangeRecord;\n      // Record the state of the mapping\n      for (record = this._previousMapHead = this._mapHead; record !== null; record = record._next) {\n        record._nextPrevious = record._next;\n      }\n\n      for (record = this._changesHead; record !== null; record = record._nextChanged) {\n        record.previousValue = record.currentValue;\n      }\n\n      for (record = this._additionsHead; record != null; record = record._nextAdded) {\n        record.previousValue = record.currentValue;\n      }\n\n      // todo(vicb) once assert is supported\n      // assert(() {\n      //  var r = _changesHead;\n      //  while (r != null) {\n      //    var nextRecord = r._nextChanged;\n      //    r._nextChanged = null;\n      //    r = nextRecord;\n      //  }\n      //\n      //  r = _additionsHead;\n      //  while (r != null) {\n      //    var nextRecord = r._nextAdded;\n      //    r._nextAdded = null;\n      //    r = nextRecord;\n      //  }\n      //\n      //  r = _removalsHead;\n      //  while (r != null) {\n      //    var nextRecord = r._nextRemoved;\n      //    r._nextRemoved = null;\n      //    r = nextRecord;\n      //  }\n      //\n      //  return true;\n      //});\n      this._changesHead = this._changesTail = null;\n      this._additionsHead = this._additionsTail = null;\n      this._removalsHead = this._removalsTail = null;\n    }\n  }\n\n  /** @internal */\n  _truncate(lastRecord: KeyValueChangeRecord, record: KeyValueChangeRecord) {\n    while (record !== null) {\n      if (lastRecord === null) {\n        this._mapHead = null;\n      } else {\n        lastRecord._next = null;\n      }\n      var nextRecord = record._next;\n      // todo(vicb) assert\n      // assert((() {\n      //  record._next = null;\n      //  return true;\n      //}));\n      this._addToRemovals(record);\n      lastRecord = record;\n      record = nextRecord;\n    }\n\n    for (var rec: KeyValueChangeRecord = this._removalsHead; rec !== null; rec = rec._nextRemoved) {\n      rec.previousValue = rec.currentValue;\n      rec.currentValue = null;\n      this._records.delete(rec.key);\n    }\n  }\n\n  /** @internal */\n  _isInRemovals(record: KeyValueChangeRecord) {\n    return record === this._removalsHead || record._nextRemoved !== null ||\n           record._prevRemoved !== null;\n  }\n\n  /** @internal */\n  _addToRemovals(record: KeyValueChangeRecord) {\n    // todo(vicb) assert\n    // assert(record._next == null);\n    // assert(record._nextAdded == null);\n    // assert(record._nextChanged == null);\n    // assert(record._nextRemoved == null);\n    // assert(record._prevRemoved == null);\n    if (this._removalsHead === null) {\n      this._removalsHead = this._removalsTail = record;\n    } else {\n      this._removalsTail._nextRemoved = record;\n      record._prevRemoved = this._removalsTail;\n      this._removalsTail = record;\n    }\n  }\n\n  /** @internal */\n  _removeFromSeq(prev: KeyValueChangeRecord, record: KeyValueChangeRecord) {\n    var next = record._next;\n    if (prev === null) {\n      this._mapHead = next;\n    } else {\n      prev._next = next;\n    }\n    // todo(vicb) assert\n    // assert((() {\n    //  record._next = null;\n    //  return true;\n    //})());\n  }\n\n  /** @internal */\n  _removeFromRemovals(record: KeyValueChangeRecord) {\n    // todo(vicb) assert\n    // assert(record._next == null);\n    // assert(record._nextAdded == null);\n    // assert(record._nextChanged == null);\n\n    var prev = record._prevRemoved;\n    var next = record._nextRemoved;\n    if (prev === null) {\n      this._removalsHead = next;\n    } else {\n      prev._nextRemoved = next;\n    }\n    if (next === null) {\n      this._removalsTail = prev;\n    } else {\n      next._prevRemoved = prev;\n    }\n    record._prevRemoved = record._nextRemoved = null;\n  }\n\n  /** @internal */\n  _addToAdditions(record: KeyValueChangeRecord) {\n    // todo(vicb): assert\n    // assert(record._next == null);\n    // assert(record._nextAdded == null);\n    // assert(record._nextChanged == null);\n    // assert(record._nextRemoved == null);\n    // assert(record._prevRemoved == null);\n    if (this._additionsHead === null) {\n      this._additionsHead = this._additionsTail = record;\n    } else {\n      this._additionsTail._nextAdded = record;\n      this._additionsTail = record;\n    }\n  }\n\n  /** @internal */\n  _addToChanges(record: KeyValueChangeRecord) {\n    // todo(vicb) assert\n    // assert(record._nextAdded == null);\n    // assert(record._nextChanged == null);\n    // assert(record._nextRemoved == null);\n    // assert(record._prevRemoved == null);\n    if (this._changesHead === null) {\n      this._changesHead = this._changesTail = record;\n    } else {\n      this._changesTail._nextChanged = record;\n      this._changesTail = record;\n    }\n  }\n\n  toString(): string {\n    var items = [];\n    var previous = [];\n    var changes = [];\n    var additions = [];\n    var removals = [];\n    var record: KeyValueChangeRecord;\n\n    for (record = this._mapHead; record !== null; record = record._next) {\n      items.push(stringify(record));\n    }\n    for (record = this._previousMapHead; record !== null; record = record._nextPrevious) {\n      previous.push(stringify(record));\n    }\n    for (record = this._changesHead; record !== null; record = record._nextChanged) {\n      changes.push(stringify(record));\n    }\n    for (record = this._additionsHead; record !== null; record = record._nextAdded) {\n      additions.push(stringify(record));\n    }\n    for (record = this._removalsHead; record !== null; record = record._nextRemoved) {\n      removals.push(stringify(record));\n    }\n\n    return \"map: \" + items.join(', ') + \"\\n\" + \"previous: \" + previous.join(', ') + \"\\n\" +\n           \"additions: \" + additions.join(', ') + \"\\n\" + \"changes: \" + changes.join(', ') + \"\\n\" +\n           \"removals: \" + removals.join(', ') + \"\\n\";\n  }\n\n  /** @internal */\n  _forEach(obj, fn: Function) {\n    if (obj instanceof Map) {\n      (<Map<any, any>>obj).forEach(<any>fn);\n    } else {\n      StringMapWrapper.forEach(obj, fn);\n    }\n  }\n}\n\n\nexport class KeyValueChangeRecord {\n  previousValue: any = null;\n  currentValue: any = null;\n\n  /** @internal */\n  _nextPrevious: KeyValueChangeRecord = null;\n  /** @internal */\n  _next: KeyValueChangeRecord = null;\n  /** @internal */\n  _nextAdded: KeyValueChangeRecord = null;\n  /** @internal */\n  _nextRemoved: KeyValueChangeRecord = null;\n  /** @internal */\n  _prevRemoved: KeyValueChangeRecord = null;\n  /** @internal */\n  _nextChanged: KeyValueChangeRecord = null;\n\n  constructor(public key: any) {}\n\n  toString(): string {\n    return looseIdentical(this.previousValue, this.currentValue) ?\n               stringify(this.key) :\n               (stringify(this.key) + '[' + stringify(this.previousValue) + '->' +\n                stringify(this.currentValue) + ']');\n  }\n}\n"]}