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Ensure that any pending rendering operations in PDFViewer/PDFThumbnailViewer are cancelled when the viewer is closed

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This commit is contained in:
Jonas Jenwald 2016-07-29 20:39:22 +02:00
parent fb5aa58008
commit a824c6c4f6
5 changed files with 66 additions and 27 deletions
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18
web/pdf_viewer.js
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@ -299,6 +299,7 @@ var PDFViewer = (function pdfViewer() {
*/
setDocument: function (pdfDocument) {
if (this.pdfDocument) {
this._cancelRendering();
this._resetView();
}
@ -424,10 +425,8 @@ var PDFViewer = (function pdfViewer() {
this._pagesRequests = [];
this._pageViewsReady = false;
var container = this.viewer;
while (container.hasChildNodes()) {
container.removeChild(container.lastChild);
}
// Remove the pages from the DOM.
this.viewer.textContent = '';
},
_scrollUpdate: function PDFViewer_scrollUpdate() {
@ -802,6 +801,17 @@ var PDFViewer = (function pdfViewer() {
}
},
/**
* @private
*/
_cancelRendering: function PDFViewer_cancelRendering() {
for (var i = 0, ii = this._pages.length; i < ii; i++) {
if (this._pages[i]) {
this._pages[i].cancelRendering();
}
}
},
/**
* @param {PDFPageView} pageView
* @returns {PDFPage}