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Fixing concurent draw page requests for de-allocation

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This commit is contained in:
Yury Delendik 2012-04-16 14:13:41 -05:00
parent 08830731c0
commit 1e96c73207
2 changed files with 10 additions and 2 deletions
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11
src/api.js
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@ -203,8 +203,9 @@ var PDFPageProxy = (function PDFPageProxyClosure() {
stats.time('Overall');
// If there is no displayReadyPromise yet, then the operatorList was never
// requested before. Make the request and create the promise.
if (!this.displayReadyPromise) {
if (!this.displayReadyPromise || this.destroyed) {
this.displayReadyPromise = new Promise();
this.destroyed = false;
this.stats.time('Page Request');
this.transport.messageHandler.send('RenderPageRequest', {
@ -250,6 +251,7 @@ var PDFPageProxy = (function PDFPageProxyClosure() {
// Always defer call to display() to work around bug in
// Firefox error reporting from XHR callbacks.
setTimeout(function pageSetTimeout() {
delete self.operatorList;
self.displayReadyPromise.resolve();
});
};
@ -305,7 +307,6 @@ var PDFPageProxy = (function PDFPageProxyClosure() {
gfx.executeOperatorList(operatorList, startIdx, next, stepper);
if (startIdx == length) {
gfx.endDrawing();
delete self.operatorList;
stats.timeEnd('Rendering');
stats.timeEnd('Overall');
if (callback) callback();
@ -333,6 +334,12 @@ var PDFPageProxy = (function PDFPageProxyClosure() {
};
promise.resolve(operationList);
return promise;
},
/**
* Destroys allocated by page resources.
*/
destroy: function() {
this.destroyed = true;
}
};
return PDFPageProxy;