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Fix timer leak after multiple Viewer.open() calls, take 2

Browse Source 
Track the request ID of the outstanding animation frame and cancel it
on Viewer.close().

Fixes #76.
This commit is contained in:
Benjamin Gilbert 2013-04-26 22:32:51 -04:00
parent 23c20e3d5a
commit 8cb2714dae
1 changed files with 10 additions and 7 deletions
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17
src/viewer.js
View File

@ -115,6 +115,7 @@ $.Viewer = function( options ) {
THIS[ this.hash ] = {
"fsBoundsDelta": new $.Point( 1, 1 ),
"prevContainerSize": null,
"updateRequestId": null,
"animating": false,
"forceRedraw": false,
"mouseInside": false,
@ -353,7 +354,11 @@ $.extend( $.Viewer.prototype, $.EventHandler.prototype, $.ControlDock.prototype,
* @return {OpenSeadragon.Viewer} Chainable.
*/
close: function ( ) {
if ( THIS[ this.hash ].updateRequestId !== null ){
$.cancelAnimationFrame( THIS[ this.hash ].updateRequestId );
THIS[ this.hash ].updateRequestId = null;
}
if( this.drawer ){
this.drawer.clearOverlays();
}
@ -1064,7 +1069,7 @@ function openTileSource( viewer, source ) {
THIS[ _this.hash ].animating = false;
THIS[ _this.hash ].forceRedraw = true;
scheduleUpdate( _this, updateMulti );
THIS[ _this.hash ].updateRequestId = scheduleUpdate( _this, updateMulti );
//Assuming you had programatically created a bunch of overlays
//and added them via configuration
@ -1338,13 +1343,11 @@ function updateMulti( viewer ) {
var beginTime;
if ( !viewer.source ) {
return;
}
beginTime = +new Date();
updateOnce( viewer );
scheduleUpdate( viewer, arguments.callee, beginTime );
THIS[ viewer.hash ].updateRequestId = scheduleUpdate( viewer,
arguments.callee, beginTime );
}
function updateOnce( viewer ) {