TimelineModel.js #1

function TimelineModel(timelineView, streamUtilities)
{
	var mStreamUtilities = streamUtilities;
	var mNodesPerPage = timelineView.maxVisibleChangeNodes();
	
	function timelinePageLeftListener() 
	{ 
		this.pageLeft = function(streamNodes, mostRecentChange) 
		{ 
			loadTimelineChanges(streamNodes, mostRecentChange)
		} 
	} 
	
	function sortChangelistByNumber(changeA, changeB)
	{
		return changeA.Change - changeB.Change;
	}

	function loadTimelineChanges(streamNodes, mostRecentChange)
	{
		var changelists = new Array();
		
		var mostRecent = '';
		
		if( mostRecentChange )
			mostRecent = '@' + mostRecentChange + ' ';

		for(var i = 0; i < streamNodes.length; i++ )
		{
			var streamNode = streamNodes[i];
			var changes = mStreamUtilities.getChanges(mNodesPerPage, streamNode.stream.mStream, mostRecent);
			
			for(var j = 0; j < changes.size; j++)
			{
				var change = changes.data[j];
				change.streamNode = streamNode;
				change.history = new Array();
                mStreamUtilities.groomChangelist(change);
                
				changelists.push(change);
			}
		}
		
		changelists.sort(sortChangelistByNumber);
		
		for( var i = 0; i < changelists.length; i++ )
			timelineView.addChange(changelists[i]);
		
		//console.log( 'number of changes: ' + changelists.length);

		timelineView.layoutNodes(mNodesPerPage);

		if( changelists.length > 0 )
			loadTimelineChangeHistory(changelists);
	}

	function loadTimelineChangeHistory(changes)
	{
		for(var i = 0; i < changes.length; i++)
		{
			var doneLoadingHistory = changes.length - 1 == i;
			
			var changeList = changes[i];
			var f = function(cl, cls, done) 
					{ 
						return function(obj) 
						{ 
							timelineChangeHistoryCallback(cl,cls,done,obj); 
						} 
					};
					
			changeList.history = new Array();
			mStreamUtilities.getChangeHistory(changeList.Change, f(changeList, changes, doneLoadingHistory));
		}
	}
	
	function timelineChangeHistoryCallback(changeList, changes, doneLoading, history)
	{
		var changeHistory= history;
		var buf = ' ';
			for (var j = 0; j < changeHistory.size; j++) 
			{
				var change = changeHistory.data[j];
				if( change )
				{
                    mStreamUtilities.groomChangelist(change);
					change.stream = mStreamUtilities.streamFromDepotPath(change.path);
					changeList.history.push(change);
					
					buf += ' ' + change.Change;
				}
			}
		
		if( doneLoading )
		{
			timelineView.assembleHistory();
			timelineView.drawLinks();
			timelineView.expandNames();
		}
	}
    
	this.Load = function()
	{
		timelineView.addPageLeftListener(new timelinePageLeftListener());
		loadTimelineChanges(timelineView.streamNodes);
	}
}