breeze-client
Version:
Breeze data management for JavaScript clients
183 lines • 22.9 kB
JavaScript
import { core } from './core';
let mixin = {
push: function (...args) {
if (this._inProgress) {
return -1;
}
let goodAdds = this._getGoodAdds(args);
if (!goodAdds.length) {
return this.length;
}
this._beforeChange();
let result;
let objPrototype = Object.getPrototypeOf(this);
if (objPrototype.push) {
result = objPrototype.push.apply(this, goodAdds);
}
else {
result = Array.prototype.push.apply(this, goodAdds);
}
processAdds(this, goodAdds);
return result;
},
_push: function (...args) {
if (this._inProgress) {
return -1;
}
let goodAdds = args;
this._beforeChange();
let result;
let objPrototype = Object.getPrototypeOf(this);
if (objPrototype.push) {
result = objPrototype.push.apply(this, goodAdds);
}
else {
result = Array.prototype.push.apply(this, goodAdds);
}
processAdds(this, goodAdds);
return result;
},
unshift: function (...args) {
let goodAdds = this._getGoodAdds(args);
if (!goodAdds.length) {
return this.length;
}
this._beforeChange();
let result;
let objPrototype = Object.getPrototypeOf(this);
if (objPrototype.unshift) {
result = objPrototype.unshift.apply(this, goodAdds);
}
else {
result = Array.prototype.unshift.apply(this, goodAdds);
}
processAdds(this, goodAdds);
return result;
},
pop: function () {
this._beforeChange();
let result;
let objPrototype = Object.getPrototypeOf(this);
if (objPrototype.pop) {
result = objPrototype.pop.apply(this);
}
else {
result = Array.prototype.pop.apply(this);
}
processRemoves(this, [result]);
return result;
},
shift: function () {
this._beforeChange();
let result;
let objPrototype = Object.getPrototypeOf(this);
if (objPrototype.shift) {
result = objPrototype.shift.apply(this);
}
else {
result = Array.prototype.shift.apply(this);
}
processRemoves(this, [result]);
return result;
},
splice: function (...args) {
let goodAdds = this._getGoodAdds(core.arraySlice(args, 2));
let newArgs = core.arraySlice(args, 0, 2).concat(goodAdds);
this._beforeChange();
let result;
let objPrototype = Object.getPrototypeOf(this);
if (objPrototype.splice) {
result = objPrototype.splice.apply(this, newArgs);
}
else {
result = Array.prototype.splice.apply(this, newArgs);
}
processRemoves(this, result);
if (goodAdds.length) {
processAdds(this, goodAdds);
}
return result;
},
getEntityAspect: function () {
return this.parent.entityAspect || this.parent.complexAspect.getEntityAspect();
},
_getEventParent: function () {
return this.getEntityAspect();
},
_getPendingPubs: function () {
let em = this.getEntityAspect().entityManager;
return em && em._pendingPubs;
},
_beforeChange: function () {
// default is to do nothing
}
};
function updateEntityState(obsArray) {
let entityAspect = obsArray.getEntityAspect();
if (entityAspect.entityState.isUnchanged()) {
entityAspect.setModified();
}
if (entityAspect.entityState.isModified() && !obsArray._origValues) {
obsArray._origValues = obsArray.slice(0);
}
}
function publish(publisher, eventName, eventArgs) {
let pendingPubs = publisher._getPendingPubs();
if (pendingPubs) {
if (!publisher._pendingArgs) {
publisher._pendingArgs = eventArgs;
pendingPubs.push(function () {
publisher[eventName].publish(publisher._pendingArgs);
publisher._pendingArgs = null;
});
}
else {
combineArgs(publisher._pendingArgs, eventArgs);
}
}
else {
publisher[eventName].publish(eventArgs);
}
}
function initializeParent(obsArray, parent, parentProperty) {
obsArray.parent = parent;
obsArray.parentProperty = parentProperty;
}
function processAdds(obsArray, adds) {
obsArray._processAdds(adds);
// this is referencing the name of the method on the complexArray not the name of the event
//var args = { added: adds };
//args[obsArray._typeName] = obsArray;
publish(obsArray, "arrayChanged", { array: obsArray, added: adds });
}
function processRemoves(obsArray, removes) {
obsArray._processRemoves(removes);
// this is referencing the name of the method on the array not the name of the event
publish(obsArray, "arrayChanged", { array: obsArray, removed: removes });
}
// TODO: see if this function already exists in core and can be imported.
function combineArgs(target, source) {
for (let key in source) {
if (key !== "array" && target.hasOwnProperty(key)) {
let sourceValue = source[key];
let targetValue = target[key];
if (targetValue) {
if (!Array.isArray(targetValue)) {
throw new Error("Cannot combine non array args");
}
Array.prototype.push.apply(targetValue, sourceValue);
}
else {
target[key] = sourceValue;
}
}
}
}
/** @hidden @internal */
export const observableArray = {
mixin: mixin,
updateEntityState: updateEntityState,
publish: publish,
initializeParent: initializeParent
};
//# 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{ core } from './core';\r\nimport { BreezeEvent } from './event';\r\nimport { EntityAspect } from './entity-aspect';\r\nimport { DataProperty } from './entity-metadata';\r\n\r\n/** @hidden */\r\nexport interface ObservableArray {\r\n  push: (...args: any[]) => number;\r\n  _push: (...args: any[]) => number;\r\n  unshift: (...args: any[]) =>  number;\r\n  pop: () => any;\r\n  shift: () => any;\r\n  splice: (...args: any[]) => any[];\r\n  slice: (a: number, b?: number) => any[]; // implemented on the native array\r\n  length: number;\r\n  \r\n  getEntityAspect: () => EntityAspect;\r\n  arrayChanged: BreezeEvent<ArrayChangedArgs>;\r\n  parent?: Object;\r\n  parentProperty?: DataProperty;\r\n  _getEventParent: () => Object;\r\n  _getPendingPubs: () => any[]; // TODO: Pub[]\r\n  _beforeChange: () => void;\r\n  _processAdds(items: any[]): void;\r\n  _processRemoves(items: any[]): void;\r\n  _origValues: any[];\r\n  _pendingArgs: any;\r\n}\r\n\r\nexport interface ArrayChangedArgs {\r\n  array: any[];\r\n  added?: any[]; \r\n  removed?: any[];\r\n}\r\n\r\nlet mixin = {\r\n  push: function(...args: any[]) {\r\n    if (this._inProgress) {\r\n      return -1;\r\n    }\r\n\r\n    let goodAdds = this._getGoodAdds(args);\r\n    if (!goodAdds.length) {\r\n      return this.length;\r\n    }\r\n    this._beforeChange();\r\n    let result;\r\n    let objPrototype = Object.getPrototypeOf(this);\r\n    if (objPrototype.push) {\r\n        result = objPrototype.push.apply(this, goodAdds);\r\n    } else {\r\n        result = Array.prototype.push.apply(this, goodAdds);\r\n    }\r\n    processAdds(this, goodAdds);\r\n    return result;\r\n  },\r\n\r\n  _push: function(...args: any[]) {\r\n    if (this._inProgress) {\r\n      return -1;\r\n    }\r\n    let goodAdds = args;\r\n    this._beforeChange();\r\n    let result;\r\n    let objPrototype = Object.getPrototypeOf(this);\r\n    if (objPrototype.push) {\r\n        result = objPrototype.push.apply(this, goodAdds);\r\n    } else {\r\n        result = Array.prototype.push.apply(this, goodAdds);\r\n    }\r\n    processAdds(this, goodAdds);\r\n    return result;\r\n  },\r\n\r\n  unshift: function(...args: any[]) {\r\n    let goodAdds = this._getGoodAdds(args);\r\n    if (!goodAdds.length) {\r\n      return this.length;\r\n    }\r\n    this._beforeChange();\r\n    let result;\r\n    let objPrototype = Object.getPrototypeOf(this);\r\n    if (objPrototype.unshift) {\r\n        result = objPrototype.unshift.apply(this, goodAdds);\r\n    } else {\r\n        result = Array.prototype.unshift.apply(this, goodAdds);\r\n    }\r\n    processAdds(this, goodAdds);\r\n    return result;\r\n  },\r\n\r\n  pop: function() {\r\n    this._beforeChange();\r\n    let result;\r\n    let objPrototype = Object.getPrototypeOf(this);\r\n    if (objPrototype.pop) {\r\n        result = objPrototype.pop.apply(this);\r\n    } else {\r\n        result = Array.prototype.pop.apply(this);\r\n    }\r\n    processRemoves(this, [result]);\r\n    return result;\r\n  },\r\n\r\n  shift: function() {\r\n    this._beforeChange();\r\n    let result;\r\n    let objPrototype = Object.getPrototypeOf(this);\r\n    if (objPrototype.shift) {\r\n        result = objPrototype.shift.apply(this);\r\n    } else {\r\n        result = Array.prototype.shift.apply(this);\r\n    }    \r\n    processRemoves(this, [result]);\r\n    return result;\r\n  },\r\n\r\n  splice: function(...args: any[]) {\r\n    let goodAdds = this._getGoodAdds(core.arraySlice(args, 2));\r\n    let newArgs = core.arraySlice(args, 0, 2).concat(goodAdds);\r\n    this._beforeChange();\r\n    let result;\r\n    let objPrototype = Object.getPrototypeOf(this);\r\n    if (objPrototype.splice) {\r\n        result = objPrototype.splice.apply(this, newArgs);\r\n    } else {\r\n        result = Array.prototype.splice.apply(this, newArgs);\r\n    }\r\n    processRemoves(this, result);\r\n\r\n    if (goodAdds.length) {\r\n      processAdds(this, goodAdds);\r\n    }\r\n    return result;\r\n  },\r\n\r\n  getEntityAspect: function() {\r\n    return this.parent.entityAspect || this.parent.complexAspect.getEntityAspect();\r\n  },\r\n\r\n  _getEventParent: function() {\r\n    return this.getEntityAspect();\r\n  },\r\n\r\n  _getPendingPubs: function () {\r\n    let em = this.getEntityAspect().entityManager;\r\n    return em && em._pendingPubs;\r\n  },\r\n\r\n  _beforeChange:  function () {\r\n    // default is to do nothing\r\n  }\r\n};\r\n\r\nfunction updateEntityState(obsArray: ObservableArray) {\r\n  let entityAspect = obsArray.getEntityAspect();\r\n  if (entityAspect.entityState.isUnchanged()) {\r\n    entityAspect.setModified();\r\n  }\r\n  if (entityAspect.entityState.isModified() && !obsArray._origValues) {\r\n    obsArray._origValues = obsArray.slice(0);\r\n  }\r\n}\r\n\r\nfunction publish(publisher: ObservableArray, eventName: string, eventArgs: any) {\r\n  let pendingPubs = publisher._getPendingPubs();\r\n  if (pendingPubs) {\r\n    if (!publisher._pendingArgs) {\r\n      publisher._pendingArgs = eventArgs;\r\n      pendingPubs.push(function () {\r\n        publisher[eventName].publish(publisher._pendingArgs);\r\n        publisher._pendingArgs = null;\r\n      });\r\n    } else {\r\n      combineArgs(publisher._pendingArgs, eventArgs);\r\n    }\r\n  } else {\r\n    publisher[eventName].publish(eventArgs);\r\n  }\r\n}\r\n\r\nfunction initializeParent(obsArray: any, parent: Object, parentProperty: DataProperty) {\r\n  obsArray.parent = parent;\r\n  obsArray.parentProperty = parentProperty;\r\n}\r\n\r\nfunction processAdds(obsArray: ObservableArray, adds: any[]) {\r\n  obsArray._processAdds(adds);\r\n  // this is referencing the name of the method on the complexArray not the name of the event\r\n  //var args = { added: adds };\r\n  //args[obsArray._typeName] = obsArray;\r\n  publish(obsArray, \"arrayChanged\", { array: obsArray, added: adds });\r\n}\r\n\r\nfunction processRemoves(obsArray: ObservableArray, removes: any[]) {\r\n  obsArray._processRemoves(removes);\r\n  // this is referencing the name of the method on the array not the name of the event\r\n  publish(obsArray, \"arrayChanged\", { array: obsArray, removed: removes });\r\n}\r\n\r\n// TODO: see if this function already exists in core and can be imported.\r\nfunction combineArgs(target: Object, source: Object) {\r\n  for (let key in source) {\r\n    if (key !== \"array\" && target.hasOwnProperty(key)) {\r\n      let sourceValue = source[key];\r\n      let targetValue = target[key];\r\n      if (targetValue) {\r\n        if (!Array.isArray(targetValue)) {\r\n          throw new Error(\"Cannot combine non array args\");\r\n        }\r\n        Array.prototype.push.apply(targetValue, sourceValue);\r\n      } else {\r\n        target[key] = sourceValue;\r\n      }\r\n    }\r\n  }\r\n}\r\n/** @hidden @internal */\r\nexport const observableArray = {\r\n  mixin: mixin,\r\n  updateEntityState: updateEntityState,\r\n  publish: publish,\r\n  initializeParent: initializeParent\r\n};\r\n"]}