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yjs/y-object.js
DadaMonad 3eb933400a fixed doSync bug, fixed connection problems, improved p2p sync method - still 
there are some cases that may lead to inconsistencies. Currently, only the master-slave method is a reliable sync method
2015-02-05 10:46:40 +00:00

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!function t(e,n,r){function i(s,u){if(!n[s]){if(!e[s]){var l="function"==typeof require&&require;if(!u&&l)return l(s,!0);if(o)return o(s,!0);throw new Error("Cannot find module '"+s+"'")}var a=n[s]={exports:{}};e[s][0].call(a.exports,function(t){var n=e[s][1][t];return i(n?n:t)},a,a.exports,t,e,n,r)}return n[s].exports}for(var o="function"==typeof require&&require,s=0;s<r.length;s++)i(r[s]);return i}({1:[function(t,e){var n,r;n=t("./ConnectorClass"),r=function(t,e,r,i){var o,s,u,l,a,c,p,h;for(c in n)u=n[c],t[c]=u;return t.setIsBoundToY(),h=function(e){return e.uid.creator!==r.getUserId()||"string"==typeof e.uid.op_number||"true"!==e.uid.doSync&&e.uid.doSync!==!0||"_temp"===r.getUserId()?void 0:t.broadcast(e)},null!=t.invokeSync&&r.setInvokeSyncHandler(t.invokeSync),i.push(h),s=function(t){var e,n;n=[];for(c in t)e=t[c],n.push({user:c,state:e});return n},p=function(t){var e,n,r,i;for(n={},r=0,i=t.length;i>r;r++)e=t[r],n[e.user]=e.state;return n},a=function(){return s(r.getOperationCounter())},l=function(t){var e,n,i;return i=p(t),e=r._encode(i),n={hb:e,state_vector:s(r.getOperationCounter())}},o=function(t,n){return e.applyOp(t,n)},t.getStateVector=a,t.getHB=l,t.applyHB=o,t.receive_handlers=[],t.receive_handlers.push(function(t,n){return n.uid.creator!==r.getUserId()?e.applyOp(n):void 0})},e.exports=r},{"./ConnectorClass":2}],2:[function(t,e){e.exports={init:function(t){var e;return e=function(e){return function(n,r){if(null!=t[n]){if(null==r||r.some(function(e){return e===t[n]}))return e[n]=t[n];throw new Error("You can set the '"+n+"' option to one of the following choices: "+JSON.encode(r))}throw new Error("You must specify "+n+", when initializing the Connector!")}}(this),e("syncMode",["syncAll","master-slave"]),e("role",["master","slave"]),e("user_id"),this.on_user_id_set(this.user_id),"master"===this.role&&(this.syncMode="syncAll"),this.is_synced=!1,this.connections={},this.is_bound_to_y=!1,this.connections={},this.current_sync_target=null,this.sent_hb_to_all_users=!1},isRoleMaster:function(){return"master"===this.role},isRoleSlave:function(){return"slave"===this.role},findNewSyncTarget:function(){var t,e,n;if(this.current_sync_target=null,"syncAll"===this.syncMode){n=this.connections;for(e in n)if(t=n[e],!t.is_synced){this.performSync(e);break}}return null==this.current_sync_target&&this.setStateSynced(),null},userLeft:function(t){return delete this.connections[t],this.findNewSyncTarget()},userJoined:function(t,e){if(null==e)throw new Error("Internal: You must specify the role of the joined user! E.g. userJoined('uid:3939','slave')");if(this.connections[t]={is_synced:!1},!this.is_synced||"syncAll"===this.syncMode){if("syncAll"===this.syncMode)return this.performSync(t);if("master"===e)return this.performSyncWithMaster(t)}},whenSynced:function(t){return t.constructore===Function&&(t=[t]),this.is_synced?t[0].apply(this,t.slice(1)):(null==this.compute_when_synced&&(this.compute_when_synced=[]),this.compute_when_synced.push(t))},onReceive:function(t){return this.receive_handlers.push(t)},performSync:function(t){var e,n,r,i,o;if(null==this.current_sync_target&&(this.current_sync_target=t,this.send(t,{sync_step:"getHB",send_again:"true",data:[]}),!this.sent_hb_to_all_users)){for(this.sent_hb_to_all_users=!0,e=this.getHB([]).hb,r=[],i=0,o=e.length;o>i;i++)n=e[i],r.push(n),r.length>30&&(this.broadcast({sync_step:"applyHB_",data:r}),r=[]);return this.broadcast({sync_step:"applyHB",data:r})}},performSyncWithMaster:function(t){var e,n,r,i,o;for(this.current_sync_target=t,this.send(t,{sync_step:"getHB",send_again:"true",data:[]}),e=this.getHB([]).hb,r=[],i=0,o=e.length;o>i;i++)n=e[i],r.push(n),r.length>30&&(this.broadcast({sync_step:"applyHB_",data:r}),r=[]);return this.broadcast({sync_step:"applyHB",data:r})},setStateSynced:function(){var t,e,n,r;if(!this.is_synced){for(this.is_synced=!0,r=this.compute_when_synced,e=0,n=r.length;n>e;e++)t=r[e],t();return delete this.compute_when_synced,null}},receiveMessage:function(t,e){var n,r,i,o,s,u,l,a,c,p,h,d,f;if(null==e.sync_step){for(d=this.receive_handlers,f=[],a=0,p=d.length;p>a;a++)r=d[a],f.push(r(t,e));return f}if(t!==this.user_id)if("getHB"===e.sync_step){for(n=this.getHB(e.data),i=n.hb,l=[],s=this.is_synced?function(e){return function(n){return e.send(t,n)}}(this):function(t){return function(e){return t.broadcast(e)}}(this),c=0,h=i.length;h>c;c++)o=i[c],l.push(o),l.length>30&&(s({sync_step:"applyHB_",data:l}),l=[]);if(s({sync_step:"applyHB",data:l}),null!=e.send_again)return u=function(e){return function(n){return function(){return i=e.getHB(n).hb,e.send(t,{sync_step:"applyHB",data:i,sent_again:"true"})}}}(this)(n.state_vector),setTimeout(u,3e3)}else if("applyHB"===e.sync_step){if(this.applyHB(e.data,t===this.current_sync_target),("syncAll"===this.syncMode||null!=e.sent_again)&&!this.is_synced&&this.current_sync_target===t)return this.connections[t].is_synced=!0,this.findNewSyncTarget()}else if("applyHB_"===e.sync_step)return this.applyHB(e.data,t===this.current_sync_target)},parseMessageFromXml:function(t){var e,n;return e=function(t){var r,i,o,s,u;for(s=t.children,u=[],i=0,o=s.length;o>i;i++)r=s[i],"true"===r.getAttribute("isArray")?u.push(e(r)):u.push(n(r));return u},n=function(t){var r,i,o,s,u,l,a,c,p;i={},c=t.attrs;for(s in c)u=c[s],r=parseInt(u),i[s]=isNaN(r)||""+r!==u?u:r;for(p=t.children,l=0,a=p.length;a>l;l++)o=p[l],s=o.name,i[s]="true"===o.getAttribute("isArray")?e(o):n(o);return i},n(t)},encodeMessageToXml:function(t,e){var n,r;if(r=function(t,e){var i,o;for(i in e)o=e[i],null==o||(o.constructor===Object?r(t.c(i),o):o.constructor===Array?n(t.c(i),o):t.setAttribute(i,o));return t},n=function(t,e){var i,o,s;for(t.setAttribute("isArray","true"),o=0,s=e.length;s>o;o++)i=e[o],i.constructor===Object?r(t.c("array-element"),i):n(t.c("array-element"),i);return t},e.constructor===Object)return r(t.c("y",{xmlns:"http://y.ninja/connector-stanza"}),e);if(e.constructor===Array)return n(t.c("y",{xmlns:"http://y.ninja/connector-stanza"}),e);throw new Error("I can't encode this json!")},setIsBoundToY:function(){return"function"==typeof this.on_bound_to_y&&this.on_bound_to_y(),delete this.when_bound_to_y,this.is_bound_to_y=!0}}},{}],3:[function(t,e){var n;"undefined"!=typeof window&&null!==window&&(window.unprocessed_counter=0),"undefined"!=typeof window&&null!==window&&(window.unprocessed_exec_counter=0),"undefined"!=typeof window&&null!==window&&(window.unprocessed_types=[]),n=function(){function t(t,e){this.HB=t,this.types=e,this.unprocessed_ops=[]}return t.prototype.parseOperation=function(t){var e;if(e=this.types[t.type],null!=(null!=e?e.parse:void 0))return e.parse(t);throw new Error("You forgot to specify a parser for type "+t.type+". The message is "+JSON.stringify(t)+".")},t.prototype.applyOpsCheckDouble=function(t){var e,n,r,i;for(i=[],n=0,r=t.length;r>n;n++)e=t[n],null==this.HB.getOperation(e.uid)?i.push(this.applyOp(e)):i.push(void 0);return i},t.prototype.applyOps=function(t){return this.applyOp(t)},t.prototype.applyOp=function(t,e){var n,r,i,o;for(null==e&&(e=!1),t.constructor!==Array&&(t=[t]),i=0,o=t.length;o>i;i++)r=t[i],e&&(r.fromHB="true"),n=this.parseOperation(r),null!=r.fromHB&&(n.fromHB=r.fromHB),null!=this.HB.getOperation(n)||(!this.HB.isExpectedOperation(n)&&null==n.fromHB||!n.execute())&&(this.unprocessed_ops.push(n),"undefined"!=typeof window&&null!==window&&window.unprocessed_types.push(n.type));return this.tryUnprocessed()},t.prototype.tryUnprocessed=function(){for(var t,e,n,r,i,o;;){for(t=this.unprocessed_ops.length,n=[],o=this.unprocessed_ops,r=0,i=o.length;i>r;r++)e=o[r],null!=this.HB.getOperation(e)||(!this.HB.isExpectedOperation(e)&&null==e.fromHB||!e.execute())&&n.push(e);if(this.unprocessed_ops=n,this.unprocessed_ops.length===t)break}return 0!==this.unprocessed_ops.length?this.HB.invokeSync():void 0},t}(),e.exports=n},{}],4:[function(t,e){var n,r=function(t,e){return function(){return t.apply(e,arguments)}};n=function(){function t(t){this.user_id=t,this.emptyGarbage=r(this.emptyGarbage,this),this.operation_counter={},this.buffer={},this.change_listeners=[],this.garbage=[],this.trash=[],this.performGarbageCollection=!0,this.garbageCollectTimeout=3e4,this.reserved_identifier_counter=0,setTimeout(this.emptyGarbage,this.garbageCollectTimeout)}return t.prototype.resetUserId=function(t){var e,n,r;if(r=this.buffer[this.user_id],null!=r){for(n in r)e=r[n],null!=e.uid.creator&&(e.uid.creator=t),null!=e.uid.alt&&(e.uid.alt.creator=t);if(null!=this.buffer[t])throw new Error("You are re-assigning an old user id - this is not (yet) possible!");this.buffer[t]=r,delete this.buffer[this.user_id]}return null!=this.operation_counter[this.user_id]&&(this.operation_counter[t]=this.operation_counter[this.user_id],delete this.operation_counter[this.user_id]),this.user_id=t},t.prototype.emptyGarbage=function(){var t,e,n,r;for(r=this.garbage,e=0,n=r.length;n>e;e++)t=r[e],"function"==typeof t.cleanup&&t.cleanup();return this.garbage=this.trash,this.trash=[],-1!==this.garbageCollectTimeout&&(this.garbageCollectTimeoutId=setTimeout(this.emptyGarbage,this.garbageCollectTimeout)),void 0},t.prototype.getUserId=function(){return this.user_id},t.prototype.addToGarbageCollector=function(){var t,e,n,r;if(this.performGarbageCollection){for(r=[],e=0,n=arguments.length;n>e;e++)t=arguments[e],null!=t?r.push(this.garbage.push(t)):r.push(void 0);return r}},t.prototype.stopGarbageCollection=function(){return this.performGarbageCollection=!1,this.setManualGarbageCollect(),this.garbage=[],this.trash=[]},t.prototype.setManualGarbageCollect=function(){return this.garbageCollectTimeout=-1,clearTimeout(this.garbageCollectTimeoutId),this.garbageCollectTimeoutId=void 0},t.prototype.setGarbageCollectTimeout=function(t){this.garbageCollectTimeout=t},t.prototype.getReservedUniqueIdentifier=function(){return{creator:"_",op_number:"_"+this.reserved_identifier_counter++,doSync:!1}},t.prototype.getOperationCounter=function(t){var e,n,r,i;if(null==t){n={},i=this.operation_counter;for(r in i)e=i[r],n[r]=e;return n}return this.operation_counter[t]},t.prototype.isExpectedOperation=function(t){var e,n;return null==(e=this.operation_counter)[n=t.uid.creator]&&(e[n]=0),t.uid.op_number<=this.operation_counter[t.uid.creator],!0},t.prototype._encode=function(t){var e,n,r,i,o,s,u,l,a,c;null==t&&(t={}),e=[],l=function(e,n){if(null==e||null==n)throw new Error("dah!");return null==t[e]||t[e]<=n},c=this.buffer;for(u in c){a=c[u];for(o in a)if(n=a[o],null==n.uid.noOperation&&n.uid.doSync&&l(u,o)){if(r=n._encode(),null!=n.next_cl){for(i=n.next_cl;null!=i.next_cl&&l(i.uid.creator,i.uid.op_number);)i=i.next_cl;r.next=i.getUid()}else if(null!=n.prev_cl){for(s=n.prev_cl;null!=s.prev_cl&&l(s.uid.creator,s.uid.op_number);)s=s.prev_cl;r.prev=s.getUid()}e.push(r)}}return e},t.prototype.getNextOperationIdentifier=function(t){var e;return null==t&&(t=this.user_id),null==this.operation_counter[t]&&(this.operation_counter[t]=0),e={creator:t,op_number:this.operation_counter[t],doSync:!0},this.operation_counter[t]++,e},t.prototype.getOperation=function(t){var e,n;return null!=t.uid&&(t=t.uid),e=null!=(n=this.buffer[t.creator])?n[t.op_number]:void 0,null!=t.sub&&null!=e?e.retrieveSub(t.sub):e},t.prototype.addOperation=function(t){if(null==this.buffer[t.uid.creator]&&(this.buffer[t.uid.creator]={}),null!=this.buffer[t.uid.creator][t.uid.op_number])throw new Error("You must not overwrite operations!");if(t.uid.op_number.constructor!==String&&!this.isExpectedOperation(t)&&null==t.fromHB)throw new Error("this operation was not expected!");return this.addToCounter(t),this.buffer[t.uid.creator][t.uid.op_number]=t,t},t.prototype.removeOperation=function(t){var e;return null!=(e=this.buffer[t.uid.creator])?delete e[t.uid.op_number]:void 0},t.prototype.setInvokeSyncHandler=function(t){return this.invokeSync=t},t.prototype.invokeSync=function(){},t.prototype.renewStateVector=function(t){var e,n,r;r=[];for(n in t)e=t[n],(null==this.operation_counter[n]||this.operation_counter[n]<t[n])&&null!=t[n]?r.push(this.operation_counter[n]=t[n]):r.push(void 0);return r},t.prototype.addToCounter=function(t){return null==this.operation_counter[t.uid.creator]&&(this.operation_counter[t.uid.creator]=0),"number"==typeof t.uid.op_number&&t.uid.creator!==this.getUserId()?t.uid.op_number===this.operation_counter[t.uid.creator]?this.operation_counter[t.uid.creator]++:this.invokeSync(t.uid.creator):void 0},t}(),e.exports=n},{}],5:[function(t,e){var n=[].slice,r={}.hasOwnProperty,i=function(t,e){function n(){this.constructor=t}for(var i in e)r.call(e,i)&&(t[i]=e[i]);return n.prototype=e.prototype,t.prototype=new n,t.__super__=e.prototype,t};e.exports=function(t){var e,r;return r={},e=[],r.Operation=function(){function i(t){this.is_deleted=!1,this.garbage_collected=!1,this.event_listeners=[],null!=t&&(this.uid=t)}return i.prototype.type="Operation",i.prototype.retrieveSub=function(){throw new Error("sub properties are not enable on this operation type!")},i.prototype.observe=function(t){return this.event_listeners.push(t)},i.prototype.unobserve=function(t){return this.event_listeners=this.event_listeners.filter(function(e){return t!==e})},i.prototype.deleteAllObservers=function(){return this.event_listeners=[]},i.prototype["delete"]=function(){return new r.Delete(void 0,this).execute(),null},i.prototype.callEvent=function(){return this.forwardEvent.apply(this,[this].concat(n.call(arguments)))},i.prototype.forwardEvent=function(){var t,e,r,i,o,s,u;for(r=arguments[0],t=2<=arguments.length?n.call(arguments,1):[],s=this.event_listeners,u=[],i=0,o=s.length;o>i;i++)e=s[i],u.push(e.call.apply(e,[r].concat(n.call(t))));return u},i.prototype.isDeleted=function(){return this.is_deleted},i.prototype.applyDelete=function(e){return null==e&&(e=!0),!this.garbage_collected&&(this.is_deleted=!0,e)?(this.garbage_collected=!0,t.addToGarbageCollector(this)):void 0},i.prototype.cleanup=function(){return t.removeOperation(this),this.deleteAllObservers()},i.prototype.setParent=function(t){this.parent=t},i.prototype.getParent=function(){return this.parent},i.prototype.getUid=function(){var t;return null==this.uid.noOperation?this.uid:null!=this.uid.alt?(t=this.uid.alt.cloneUid(),t.sub=this.uid.sub,t.doSync=!1,t):void 0},i.prototype.cloneUid=function(){var t,e,n,r;e={},r=this.getUid();for(t in r)n=r[t],e[t]=n;return e},i.prototype.dontSync=function(){return this.uid.doSync=!1},i.prototype.execute=function(){var n,r,i;if(this.is_executed=!0,null==this.uid&&(this.uid=t.getNextOperationIdentifier()),null==this.uid.noOperation)for(t.addOperation(this),r=0,i=e.length;i>r;r++)n=e[r],n(this._encode());return this},i.prototype.saveOperation=function(t,e){return null!=(null!=e?e.execute:void 0)?this[t]=e:null!=e?(null==this.unchecked&&(this.unchecked={}),this.unchecked[t]=e):void 0},i.prototype.validateSavedOperations=function(){var e,n,r,i,o,s;o={},i=this,s=this.unchecked;for(e in s)r=s[e],n=t.getOperation(r),n?this[e]=n:(o[e]=r,i=!1);return delete this.unchecked,i||(this.unchecked=o),i},i}(),r.Delete=function(t){function e(t,n){this.saveOperation("deletes",n),e.__super__.constructor.call(this,t)}return i(e,t),e.prototype.type="Delete",e.prototype._encode=function(){return{type:"Delete",uid:this.getUid(),deletes:this.deletes.getUid()}},e.prototype.execute=function(){var t;return this.validateSavedOperations()?(t=e.__super__.execute.apply(this,arguments),t&&this.deletes.applyDelete(this),t):!1},e}(r.Operation),r.Delete.parse=function(t){var e,n;return n=t.uid,e=t.deletes,new this(n,e)},r.Insert=function(t){function e(t,n,r,i,o){this.saveOperation("parent",o),this.saveOperation("prev_cl",n),this.saveOperation("next_cl",r),null!=i?this.saveOperation("origin",i):this.saveOperation("origin",n),e.__super__.constructor.call(this,t)}return i(e,t),e.prototype.type="Insert",e.prototype.applyDelete=function(t){var n,r,i;return null==this.deleted_by&&(this.deleted_by=[]),n=!1,null==this.parent||this.isDeleted()||null==t||(n=!0),null!=t&&this.deleted_by.push(t),r=!1,this.next_cl.isDeleted()&&(r=!0),e.__super__.applyDelete.call(this,r),n&&this.callOperationSpecificDeleteEvents(t),(null!=(i=this.prev_cl)?i.isDeleted():void 0)?this.prev_cl.applyDelete():void 0},e.prototype.cleanup=function(){var t,n,r,i,o;if(this.next_cl.isDeleted()){for(o=this.deleted_by,r=0,i=o.length;i>r;r++)t=o[r],t.cleanup();for(n=this.next_cl;"Delimiter"!==n.type;)n.origin===this&&(n.origin=this.prev_cl),n=n.next_cl;return this.prev_cl.next_cl=this.next_cl,this.next_cl.prev_cl=this.prev_cl,e.__super__.cleanup.apply(this,arguments)}},e.prototype.getDistanceToOrigin=function(){var t,e;for(t=0,e=this.prev_cl;;){if(this.origin===e)break;t++,e=e.prev_cl}return t},e.prototype.execute=function(){var t,n,r;if(this.validateSavedOperations()){if(null!=this.parent&&(null==this.prev_cl&&(this.prev_cl=this.parent.beginning),null==this.origin&&(this.origin=this.parent.beginning),null==this.next_cl&&(this.next_cl=this.parent.end)),null!=this.prev_cl){for(t=this.getDistanceToOrigin(),r=this.prev_cl.next_cl,n=t;;){if(r===this.next_cl)break;if(r.getDistanceToOrigin()===n)r.uid.creator<this.uid.creator&&(this.prev_cl=r,t=n+1);else{if(!(r.getDistanceToOrigin()<n))break;n-t<=r.getDistanceToOrigin()&&(this.prev_cl=r,t=n+1)}n++,r=r.next_cl}this.next_cl=this.prev_cl.next_cl,this.prev_cl.next_cl=this,this.next_cl.prev_cl=this}return this.setParent(this.prev_cl.getParent()),e.__super__.execute.apply(this,arguments),this.callOperationSpecificInsertEvents(),this}return!1},e.prototype.callOperationSpecificInsertEvents=function(){var t;return null!=(t=this.parent)?t.callEvent([{type:"insert",position:this.getPosition(),object:this.parent,changedBy:this.uid.creator,value:this.content}]):void 0},e.prototype.callOperationSpecificDeleteEvents=function(t){return this.parent.callEvent([{type:"delete",position:this.getPosition(),object:this.parent,length:1,changedBy:t.uid.creator}])},e.prototype.getPosition=function(){var t,e;for(t=0,e=this.prev_cl;;){if(e instanceof r.Delimiter)break;e.isDeleted()||t++,e=e.prev_cl}return t},e}(r.Operation),r.ImmutableObject=function(t){function e(t,n){this.content=n,e.__super__.constructor.call(this,t)}return i(e,t),e.prototype.type="ImmutableObject",e.prototype.val=function(){return this.content},e.prototype._encode=function(){var t;return t={type:this.type,uid:this.getUid(),content:this.content}},e}(r.Operation),r.ImmutableObject.parse=function(t){var e,n;return n=t.uid,e=t.content,new this(n,e)},r.Delimiter=function(t){function e(t,n){this.saveOperation("prev_cl",t),this.saveOperation("next_cl",n),this.saveOperation("origin",t),e.__super__.constructor.call(this,{noOperation:!0})}return i(e,t),e.prototype.type="Delimiter",e.prototype.applyDelete=function(){var t;for(e.__super__.applyDelete.call(this),t=this.prev_cl;null!=t;)t.applyDelete(),t=t.prev_cl;return void 0},e.prototype.cleanup=function(){return e.__super__.cleanup.call(this)},e.prototype.execute=function(){var t,n;if(null!=(null!=(t=this.unchecked)?t.next_cl:void 0))return e.__super__.execute.apply(this,arguments);if(null!=(n=this.unchecked)?n.prev_cl:void 0){if(this.validateSavedOperations()){if(null!=this.prev_cl.next_cl)throw new Error("Probably duplicated operations");return this.prev_cl.next_cl=this,e.__super__.execute.apply(this,arguments)}return!1}return null!=this.prev_cl&&null==this.prev_cl.next_cl?(delete this.prev_cl.unchecked.next_cl,this.prev_cl.next_cl=this,e.__super__.execute.apply(this,arguments)):e.__super__.execute.apply(this,arguments)},e.prototype._encode=function(){var t,e;return{type:this.type,uid:this.getUid(),prev:null!=(t=this.prev_cl)?t.getUid():void 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