META-INF.resources.bower_components.jszip.lib.stream.DataWorker.min.js Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jwebmp-data-tables Show documentation

The JWebSwing implementation for Data Tables

There is a newer version: 0.66.0.1

"use strict";var utils=require("../utils");var GenericWorker=require("./GenericWorker");var DEFAULT_BLOCK_SIZE=16*1024;function DataWorker(dataP){GenericWorker.call(this,"DataWorker");var self=this;this.dataIsReady=false;this.index=0;this.max=0;this.data=null;this.type="";this._tickScheduled=false;dataP.then(function(data){self.dataIsReady=true;self.data=data;self.max=data&&data.length||0;self.type=utils.getTypeOf(data);if(!self.isPaused){self._tickAndRepeat()}},function(e){self.error(e)})}utils.inherits(DataWorker,GenericWorker);DataWorker.prototype.cleanUp=function(){GenericWorker.prototype.cleanUp.call(this);this.data=null};DataWorker.prototype.resume=function(){if(!GenericWorker.prototype.resume.call(this)){return false}if(!this._tickScheduled&&this.dataIsReady){this._tickScheduled=true;utils.delay(this._tickAndRepeat,[],this)}return true};DataWorker.prototype._tickAndRepeat=function(){this._tickScheduled=false;if(this.isPaused||this.isFinished){return}this._tick();if(!this.isFinished){utils.delay(this._tickAndRepeat,[],this);this._tickScheduled=true}};DataWorker.prototype._tick=function(){if(this.isPaused||this.isFinished){return false}var size=DEFAULT_BLOCK_SIZE;var data=null,nextIndex=Math.min(this.max,this.index+size);if(this.index>=this.max){return this.end()}else{switch(this.type){case"string":data=this.data.substring(this.index,nextIndex);break;case"uint8array":data=this.data.subarray(this.index,nextIndex);break;case"array":case"nodebuffer":data=this.data.slice(this.index,nextIndex);break}this.index=nextIndex;return this.push({data:data,meta:{percent:this.max?this.index/this.max*100:0}})}};module.exports=DataWorker;