// SpryHTMLDataSet.js - version 0.18 - Spry Pre-Release 1.6
//
// Copyright (c) 2007. Adobe Systems Incorporated.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//   * Neither the name of Adobe Systems Incorporated nor the names of its
//     contributors may be used to endorse or promote products derived from this
//     software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

Spry.Data.HTMLDataSet=function(dataSetURL,sourceElementID,dataSetOptions)
{this.sourceElementID=sourceElementID;this.sourceElement=null;this.sourceWasInitialized=false;this.usesExternalFile=(dataSetURL!=null)?true:false;this.firstRowAsHeaders=true;this.useColumnsAsRows=false;this.columnNames=null;this.hideDataSourceElement=true;this.rowSelector=null;this.dataSelector=null;Spry.Data.HTTPSourceDataSet.call(this,dataSetURL,dataSetOptions);};Spry.Data.HTMLDataSet.prototype=new Spry.Data.HTTPSourceDataSet();Spry.Data.HTMLDataSet.prototype.constructor=Spry.Data.HTMLDataSet;Spry.Data.HTMLDataSet.prototype.getDataRefStrings=function()
{var dep=[];if(this.url)
dep.push(this.url);if(typeof this.sourceElementID=="string")
dep.push(this.sourceElementID);return dep;};Spry.Data.HTMLDataSet.prototype.setDisplay=function(ele,display)
{if(ele)
ele.style.display=display;};Spry.Data.HTMLDataSet.prototype.initDataSource=function(callLoadData)
{if(!this.loadDependentDataSets())
return;if(!this.usesExternalFile)
{this.setSourceElement();if(this.hideDataSourceElement)
this.setDisplay(this.sourceElement,"none");}};Spry.Data.HTMLDataSet.prototype.setSourceElement=function(externalDataElement)
{this.sourceElement=null;if(!this.sourceElementID)
{if(externalDataElement)
this.sourceElement=externalDataElement;else
{this.hideDataSourceElement=false;this.sourceElement=document.body;}
return;}
var sourceElementID=Spry.Data.Region.processDataRefString(null,this.sourceElementID,this.dataSetsForDataRefStrings);if(!this.usesExternalFile)
this.sourceElement=Spry.$(sourceElementID);else
if(externalDataElement)
{var foundElement=false;var sources=Spry.Utils.getNodesByFunc(externalDataElement,function(node)
{if(foundElement)
return false;if(node.nodeType!=1)
return false;if(node.id&&node.id.toLowerCase()==sourceElementID.toLowerCase())
{foundElement=true;return true;}});this.sourceElement=sources[0];}
if(!this.sourceElement)
Spry.Debug.reportError("Spry.Data.HTMLDataSet: '"+sourceElementID+"' is not a valid element ID");};Spry.Data.HTMLDataSet.prototype.getSourceElement=function(){return this.sourceElement;};Spry.Data.HTMLDataSet.prototype.getSourceElementID=function(){return this.sourceElementID;};Spry.Data.HTMLDataSet.prototype.setSourceElementID=function(sourceElementID)
{if(this.sourceElementID!=sourceElementID)
{this.sourceElementID=sourceElementID;this.recalculateDataSetDependencies();this.dataWasLoaded=false;}};Spry.Data.HTMLDataSet.prototype.getDataSelector=function(){return this.dataSelector;};Spry.Data.HTMLDataSet.prototype.setDataSelector=function(dataSelector)
{if(this.dataSelector!=dataSelector)
{this.dataSelector=dataSelector;this.dataWasLoaded=false;}};Spry.Data.HTMLDataSet.prototype.getRowSelector=function(){return this.rowSelector;};Spry.Data.HTMLDataSet.prototype.setRowSelector=function(rowSelector)
{if(this.rowSelector!=rowSelector)
{this.rowSelector=rowSelector;this.dataWasLoaded=false;}};Spry.Data.HTMLDataSet.prototype.loadDataIntoDataSet=function(rawDataDoc)
{var responseText=rawDataDoc;responseText=Spry.Data.HTMLDataSet.cleanupSource(responseText);var div=document.createElement("div");div.id="htmlsource"+this.internalID;div.innerHTML=responseText;this.setSourceElement(div);if(this.sourceElement)
{var parsedStructure=this.getDataFromSourceElement();if(parsedStructure)
{this.dataHash=parsedStructure.dataHash;this.data=parsedStructure.data;}}
this.dataWasLoaded=true;div=null;};Spry.Data.HTMLDataSet.prototype.loadDependentDataSets=function()
{if(this.hasDataRefStrings)
{var allDataSetsReady=true;for(var i=0;i<this.dataSetsForDataRefStrings.length;i++)
{var ds=this.dataSetsForDataRefStrings[i];if(ds.getLoadDataRequestIsPending())
allDataSetsReady=false;else if(!ds.getDataWasLoaded())
{ds.loadData();allDataSetsReady=false;}}
if(!allDataSetsReady)
return false;}
return true;};Spry.Data.HTMLDataSet.prototype.loadData=function()
{this.cancelLoadData();this.initDataSource();var self=this;if(!this.usesExternalFile)
{this.notifyObservers("onPreLoad");this.dataHash=new Object;this.data=new Array;this.dataWasLoaded=false;this.unfilteredData=null;this.curRowID=0;this.pendingRequest=new Object;this.pendingRequest.timer=setTimeout(function()
{self.pendingRequest=null;var parsedStructure=self.getDataFromSourceElement();if(parsedStructure)
{self.dataHash=parsedStructure.dataHash;self.data=parsedStructure.data;}
self.dataWasLoaded=true;self.disableNotifications();self.filterAndSortData();self.enableNotifications();self.notifyObservers("onPostLoad");self.notifyObservers("onDataChanged");},0);}
else
{var url=Spry.Data.Region.processDataRefString(null,this.url,this.dataSetsForDataRefStrings);var postData=this.requestInfo.postData;if(postData&&(typeof postData)=="string")
postData=Spry.Data.Region.processDataRefString(null,postData,this.dataSetsForDataRefStrings);this.notifyObservers("onPreLoad");this.dataHash=new Object;this.data=new Array;this.dataWasLoaded=false;this.unfilteredData=null;this.curRowID=0;var req=this.requestInfo.clone();req.url=url;req.postData=postData;this.pendingRequest=new Object;this.pendingRequest.data=Spry.Data.HTTPSourceDataSet.LoadManager.loadData(req,this,this.useCache);}};Spry.Data.HTMLDataSet.cleanupSource=function(source)
{source=source.replace(/<(img|script|link|frame|iframe|input)([^>]+)>/gi,function(a,b,c){return'<'+b+c.replace(/\b(src|href)\s*=/gi,function(a,b){return'spry_'+b+'=';})+'>';});return source;};Spry.Data.HTMLDataSet.undoCleanupSource=function(source)
{source=source.replace(/<(img|script|link|frame|iframe|input)([^>]+)>/gi,function(a,b,c){return'<'+b+c.replace(/\bspry_(src|href)\s*=/gi,function(a,b){return b+'=';})+'>';});return source;};Spry.Data.HTMLDataSet.normalizeColumnName=function(colName)
{colName=colName.replace(/(?:^[\s\t]+|[\s\t]+$)/gi,"");colName=colName.replace(/<\/?([a-z]+)([^>]+)>/gi,"");colName=colName.replace(/[\s\t]+/gi,"_");return colName;};Spry.Data.HTMLDataSet.prototype.getDataFromSourceElement=function()
{if(!this.sourceElement)
return null;var extractedData;var usesTable=false;switch(this.sourceElement.nodeName.toLowerCase())
{case"table":usesTable=true;extractedData=this.getDataFromHTMLTable();break;default:extractedData=this.getDataFromNestedStructure();}
if(!extractedData)
return null;if(this.useColumnsAsRows)
{var flipedData=new Array;for(var rowIdx=0;rowIdx<extractedData.length;rowIdx++)
{var row=extractedData[rowIdx];for(var cellIdx=0;cellIdx<row.length;cellIdx++)
{if(!flipedData[cellIdx])flipedData[cellIdx]=new Array;flipedData[cellIdx][rowIdx]=row[cellIdx];}}
extractedData=flipedData;}
var parsedStructure=new Object();parsedStructure.dataHash=new Object;parsedStructure.data=new Array;if(extractedData.length==0)
return parsedStructure;var columnNames=new Array;var firstRowOfData=extractedData[0];for(var cellIdx=0;cellIdx<firstRowOfData.length;cellIdx++)
{if(usesTable&&this.firstRowAsHeaders)columnNames[cellIdx]=Spry.Data.HTMLDataSet.normalizeColumnName(firstRowOfData[cellIdx]);else columnNames[cellIdx]="column"+cellIdx;}
if(this.columnNames&&this.columnNames.length)
{if(this.columnNames.length<columnNames.length)
Spry.Debug.reportError("Too few elements in the columnNames array. The columNames length must match the actual number of columns.");else
for(var i=0;i<columnNames.length;i++){if(this.columnNames[i])columnNames[i]=this.columnNames[i];}}
var nextID=0;var firstDataRowIndex=(usesTable&&this.firstRowAsHeaders)?1:0;for(var rowIdx=firstDataRowIndex;rowIdx<extractedData.length;rowIdx++)
{var row=extractedData[rowIdx];if(columnNames.length!=row.length)
{Spry.Debug.reportError("Unbalanced column names for row #"+(rowIdx+1)+". Skipping row.");continue;}
var rowObj={};for(var cellIdx=0;cellIdx<row.length;cellIdx++)
rowObj[columnNames[cellIdx]]=row[cellIdx];rowObj['ds_RowID']=nextID++;parsedStructure.dataHash[rowObj['ds_RowID']]=rowObj;parsedStructure.data.push(rowObj);}
return parsedStructure;};Spry.Data.HTMLDataSet.getElementChildren=function(element)
{var children=[];var child=element.firstChild;while(child)
{if(child.nodeType==1)
children.push(child);child=child.nextSibling;}
return children;};Spry.Data.HTMLDataSet.prototype.getDataFromHTMLTable=function()
{var tHead=this.sourceElement.tHead;var tBody=this.sourceElement.tBodies[0];var rowsHead=[];var rowsBody=[];if(tHead)rowsHead=Spry.Data.HTMLDataSet.getElementChildren(tHead);if(tBody)rowsBody=Spry.Data.HTMLDataSet.getElementChildren(tBody);var extractedData=new Array;var rows=rowsHead.concat(rowsBody);if(this.rowSelector)rows=Spry.Data.HTMLDataSet.applySelector(rows,this.rowSelector);for(var rowIdx=0;rowIdx<rows.length;rowIdx++)
{var row=rows[rowIdx];var dataRow;if(extractedData[rowIdx])dataRow=extractedData[rowIdx];else dataRow=new Array;var offset=0;var cells=row.cells;if(this.dataSelector)cells=Spry.Data.HTMLDataSet.applySelector(cells,this.dataSelector);for(var cellIdx=0;cellIdx<cells.length;cellIdx++)
{var cell=cells[cellIdx];var nextCellIndex=cellIdx+offset;while(dataRow[nextCellIndex])
{offset++;nextCellIndex++;}
var cellValue=Spry.Data.HTMLDataSet.undoCleanupSource(cell.innerHTML);dataRow[nextCellIndex]=cellValue;var colspan=cell.colSpan;if(colspan==0)colspan=1;var startOffset=offset;for(var offIdx=1;offIdx<colspan;offIdx++)
{offset++;nextCellIndex=cellIdx+offset;dataRow[nextCellIndex]=cellValue;}
var rowspan=cell.rowSpan;if(rowspan==0)rowspan=1;for(var rowOffIdx=1;rowOffIdx<rowspan;rowOffIdx++)
{nextRowIndex=rowIdx+rowOffIdx;var nextDataRow;if(extractedData[nextRowIndex])nextDataRow=extractedData[nextRowIndex];else nextDataRow=new Array;for(var offIdx=0;offIdx<colspan;offIdx++)
{nextCellIndex=cellIdx+startOffset;nextDataRow[nextCellIndex]=cellValue;startOffset++;}
extractedData[nextRowIndex]=nextDataRow;}}
extractedData[rowIdx]=dataRow;}
return extractedData;};Spry.Data.HTMLDataSet.prototype.getDataFromNestedStructure=function()
{var extractedData=new Array;if(this.sourceElementID&&!this.rowSelector&&!this.dataSelector)
{extractedData[0]=[Spry.Data.HTMLDataSet.undoCleanupSource(this.sourceElement.innerHTML)];return extractedData;}
var self=this;var rows=[];if(!this.rowSelector)
rows=[this.sourceElement];else
rows=Spry.Utils.getNodesByFunc(this.sourceElement,function(node){return Spry.Data.HTMLDataSet.evalSelector(node,self.sourceElement,self.rowSelector);});for(var rowIdx=0;rowIdx<rows.length;rowIdx++)
{var row=rows[rowIdx];var cells=[];if(!this.dataSelector)
cells=[row];else
cells=Spry.Utils.getNodesByFunc(row,function(node){return Spry.Data.HTMLDataSet.evalSelector(node,row,self.dataSelector);});extractedData[rowIdx]=new Array;for(var cellIdx=0;cellIdx<cells.length;cellIdx++)
extractedData[rowIdx][cellIdx]=Spry.Data.HTMLDataSet.undoCleanupSource(cells[cellIdx].innerHTML);}
return extractedData;};Spry.Data.HTMLDataSet.applySelector=function(collection,selector,root)
{var newCollection=[];for(var idx=0;idx<collection.length;idx++)
{var node=collection[idx];if(Spry.Data.HTMLDataSet.evalSelector(node,root?root:node.parentNode,selector))
newCollection.push(node);}
return newCollection;};Spry.Data.HTMLDataSet.evalSelector=function(node,root,selector)
{if(node.nodeType!=1)
return false;if(node==root)
return false;var selectors=selector.split(",");for(var idx=0;idx<selectors.length;idx++)
{var currentSelector=selectors[idx].replace(/^\s+/,"").replace(/\s+$/,"");var tagName=null;var className=null;var id=null;var selected=true;if(currentSelector.substring(0,1)==">")
{if(node.parentNode!=root)
selected=false;else
currentSelector=currentSelector.substring(1).replace(/^\s+/,"");}
if(selected)
{tagName=currentSelector.toLowerCase();if(currentSelector.indexOf(".")!=-1)
{var parts=currentSelector.split(".");tagName=parts[0];className=parts[1];}
else if(currentSelector.indexOf("#")!=-1)
{var parts=currentSelector.split("#");tagName=parts[0];id=parts[1];}}
if(selected&&tagName!=''&&tagName!='*')
if(node.nodeName.toLowerCase()!=tagName)
selected=false;if(selected&&id&&node.id!=id)
selected=false;if(selected&&className&&node.className.search(new RegExp('\\b'+className+'\\b','i'))==-1)
selected=false;if(selected)
return true;}
return false;};