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Merge pull request #6063 from Snuffleupagus/pdfLinkService-optional-history

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Tweak the PDFLinkService a bit
This commit is contained in:
Yury Delendik 2015-05-29 13:16:30 -05:00
commit d3fa65e019
1 changed files with 24 additions and 12 deletions
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36
web/pdf_link_service.js
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@ -65,12 +65,14 @@ var PDFLinkService = (function () {
get page() {
return this.pdfViewer.currentPageNumber;
},
/**
* @param {number} value
*/
set page(value) {
this.pdfViewer.currentPageNumber = value;
},
/**
* @param dest - The PDF destination object.
*/
@ -89,12 +91,14 @@ var PDFLinkService = (function () {
}
self.pdfViewer.scrollPageIntoView(pageNumber, dest);
// Update the browsing history.
self.pdfHistory.push({
dest: dest,
hash: destString,
page: pageNumber
});
if (self.pdfHistory) {
// Update the browsing history.
self.pdfHistory.push({
dest: dest,
hash: destString,
page: pageNumber
});
}
} else {
self.pdfDocument.getPageIndex(destRef).then(function (pageIndex) {
var pageNum = pageIndex + 1;
@ -173,7 +177,9 @@ var PDFLinkService = (function () {
var params = parseQueryString(hash);
// borrowing syntax from "Parameters for Opening PDF Files"
if ('nameddest' in params) {
this.pdfHistory.updateNextHashParam(params.nameddest);
if (this.pdfHistory) {
this.pdfHistory.updateNextHashParam(params.nameddest);
}
this.navigateTo(params.nameddest);
return;
}
@ -203,7 +209,7 @@ var PDFLinkService = (function () {
zoomArgs.length > 1 ? (zoomArgs[1] | 0) : null];
} else if (zoomArg === 'FitR') {
if (zoomArgs.length !== 5) {
console.error('pdfViewSetHash: ' +
console.error('PDFLinkService_setHash: ' +
'Not enough parameters for \'FitR\'.');
} else {
dest = [null, { name: zoomArg },
@ -211,7 +217,7 @@ var PDFLinkService = (function () {
(zoomArgs[3] | 0), (zoomArgs[4] | 0)];
}
} else {
console.error('pdfViewSetHash: \'' + zoomArg +
console.error('PDFLinkService_setHash: \'' + zoomArg +
'\' is not a valid zoom value.');
}
}
@ -233,7 +239,9 @@ var PDFLinkService = (function () {
} else if (/^\d+$/.test(hash)) { // page number
this.page = hash;
} else { // named destination
this.pdfHistory.updateNextHashParam(unescape(hash));
if (this.pdfHistory) {
this.pdfHistory.updateNextHashParam(unescape(hash));
}
this.navigateTo(unescape(hash));
}
},
@ -245,11 +253,15 @@ var PDFLinkService = (function () {
// See PDF reference, table 8.45 - Named action
switch (action) {
case 'GoBack':
this.pdfHistory.back();
if (this.pdfHistory) {
this.pdfHistory.back();
}
break;
case 'GoForward':
this.pdfHistory.forward();
if (this.pdfHistory) {
this.pdfHistory.forward();
}
break;
case 'NextPage':