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Fix timer leak after multiple Viewer.open() calls

Browse Source 
Keep a counter of Viewer.close() calls in private state and a copy in
the timer's closure, and stop the timer when they no longer match.

Fixes #76.
This commit is contained in:
Benjamin Gilbert 2013-04-25 00:37:36 -04:00
parent 9eb19d6c9c
commit 47aba60940
1 changed files with 17 additions and 10 deletions
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27
src/viewer.js
View File

@ -115,6 +115,7 @@ $.Viewer = function( options ) {
THIS[ this.hash ] = {
"fsBoundsDelta": new $.Point( 1, 1 ),
"prevContainerSize": null,
"closeCount": 0,
"animating": false,
"forceRedraw": false,
"mouseInside": false,
@ -368,6 +369,8 @@ $.extend( $.Viewer.prototype, $.EventHandler.prototype, $.ControlDock.prototype,
VIEWERS[ this.hash ] = null;
delete VIEWERS[ this.hash ];
THIS[ this.hash ].closeCount++;
this.raiseEvent( 'close', { viewer: this } );
return this;
@ -948,6 +951,7 @@ $.extend( $.Viewer.prototype, $.EventHandler.prototype, $.ControlDock.prototype,
function openTileSource( viewer, source ) {
var _this = viewer,
overlay,
closeCount,
i;
if ( _this.source ) {
@ -1064,7 +1068,12 @@ function openTileSource( viewer, source ) {
THIS[ _this.hash ].animating = false;
THIS[ _this.hash ].forceRedraw = true;
scheduleUpdate( _this, updateMulti );
// Use local copy in closure
closeCount = THIS[ _this.hash ].closeCount;
scheduleUpdate( _this, function(){
updateMulti( _this, closeCount );
} );
//Assuming you had programatically created a bunch of overlays
//and added them via configuration
@ -1121,9 +1130,7 @@ function scheduleUpdate( viewer, updateFunc, prevUpdateTime ){
deltaTime;
if ( THIS[ viewer.hash ].animating ) {
return $.requestAnimationFrame( function(){
updateFunc( viewer );
} );
return $.requestAnimationFrame( updateFunc );
}
currentTime = +new Date();
@ -1132,9 +1139,7 @@ function scheduleUpdate( viewer, updateFunc, prevUpdateTime ){
targetTime = prevUpdateTime + 1000 / 60;
deltaTime = Math.max( 1, targetTime - currentTime );
return $.requestAnimationFrame( function(){
updateFunc( viewer );
} );
return $.requestAnimationFrame( updateFunc );
}
@ -1334,17 +1339,19 @@ function onContainerEnter( tracker, position, buttonDownElement, buttonDownAny )
// Page update routines ( aka Views - for future reference )
///////////////////////////////////////////////////////////////////////////////
function updateMulti( viewer ) {
function updateMulti( viewer, closeCount ) {
var beginTime;
if ( !viewer.source ) {
if ( closeCount !== THIS[ viewer.hash ].closeCount ) {
return;
}
beginTime = +new Date();
updateOnce( viewer );
scheduleUpdate( viewer, arguments.callee, beginTime );
scheduleUpdate( viewer, function(){
updateMulti( viewer, closeCount );
}, beginTime );
}
function updateOnce( viewer ) {