@ -14,423 +14,413 @@
@@ -14,423 +14,413 @@
* /
/* globals chrome */
'use strict' ;
( function ( root , factory ) {
if ( typeof define === 'function' && define . amd ) {
define ( 'pdfjs-web/pdf_history' , [ 'exports' , 'pdfjs-web/dom_events' ] ,
factory ) ;
} else if ( typeof exports !== 'undefined' ) {
factory ( exports , require ( './dom_events.js' ) ) ;
} else {
factory ( ( root . pdfjsWebPDFHistory = { } ) , root . pdfjsWebDOMEvents ) ;
}
} ( this , function ( exports , domEvents ) {
function PDFHistory ( options ) {
this . linkService = options . linkService ;
this . eventBus = options . eventBus || domEvents . getGlobalEventBus ( ) ;
this . initialized = false ;
this . initialDestination = null ;
this . initialBookmark = null ;
}
PDFHistory . prototype = {
/ * *
* @ param { string } fingerprint
* /
initialize : function pdfHistoryInitialize ( fingerprint ) {
this . initialized = true ;
this . reInitialized = false ;
this . allowHashChange = true ;
this . historyUnlocked = true ;
this . isViewerInPresentationMode = false ;
this . previousHash = window . location . hash . substring ( 1 ) ;
this . currentBookmark = '' ;
this . currentPage = 0 ;
this . updatePreviousBookmark = false ;
this . previousBookmark = '' ;
this . previousPage = 0 ;
this . nextHashParam = '' ;
this . fingerprint = fingerprint ;
this . currentUid = this . uid = 0 ;
this . current = { } ;
var state = window . history . state ;
if ( this . _isStateObjectDefined ( state ) ) {
// This corresponds to navigating back to the document
// from another page in the browser history.
if ( state . target . dest ) {
this . initialDestination = state . target . dest ;
} else {
this . initialBookmark = state . target . hash ;
}
this . currentUid = state . uid ;
this . uid = state . uid + 1 ;
this . current = state . target ;
import { domEvents } from 'pdfjs-web/dom_events' ;
function PDFHistory ( options ) {
this . linkService = options . linkService ;
this . eventBus = options . eventBus || domEvents . getGlobalEventBus ( ) ;
this . initialized = false ;
this . initialDestination = null ;
this . initialBookmark = null ;
}
PDFHistory . prototype = {
/ * *
* @ param { string } fingerprint
* /
initialize : function pdfHistoryInitialize ( fingerprint ) {
this . initialized = true ;
this . reInitialized = false ;
this . allowHashChange = true ;
this . historyUnlocked = true ;
this . isViewerInPresentationMode = false ;
this . previousHash = window . location . hash . substring ( 1 ) ;
this . currentBookmark = '' ;
this . currentPage = 0 ;
this . updatePreviousBookmark = false ;
this . previousBookmark = '' ;
this . previousPage = 0 ;
this . nextHashParam = '' ;
this . fingerprint = fingerprint ;
this . currentUid = this . uid = 0 ;
this . current = { } ;
var state = window . history . state ;
if ( this . _isStateObjectDefined ( state ) ) {
// This corresponds to navigating back to the document
// from another page in the browser history.
if ( state . target . dest ) {
this . initialDestination = state . target . dest ;
} else {
// This corresponds to the loading of a new document.
if ( state && state . fingerprint &&
this . fingerprint !== state . fingerprint ) {
// Reinitialize the browsing history when a new document
// is opened in the web viewer.
this . reInitialized = true ;
}
this . _pushOrReplaceState ( { fingerprint : this . fingerprint } , true ) ;
this . initialBookmark = state . target . hash ;
}
this . currentUid = state . uid ;
this . uid = state . uid + 1 ;
this . current = state . target ;
} else {
// This corresponds to the loading of a new document.
if ( state && state . fingerprint &&
this . fingerprint !== state . fingerprint ) {
// Reinitialize the browsing history when a new document
// is opened in the web viewer.
this . reInitialized = true ;
}
this . _pushOrReplaceState ( { fingerprint : this . fingerprint } , true ) ;
}
var self = this ;
window . addEventListener ( 'popstate' , function pdfHistoryPopstate ( evt ) {
if ( ! self . historyUnlocked ) {
return ;
}
if ( evt . state ) {
// Move back/forward in the history.
self . _goTo ( evt . state ) ;
return ;
}
var self = this ;
window . addEventListener ( 'popstate' , function pdfHistoryPopstate ( evt ) {
if ( ! self . historyUnlocked ) {
return ;
}
if ( evt . state ) {
// Move back/forward in the history.
self . _goTo ( evt . state ) ;
return ;
}
// If the state is not set, then the user tried to navigate to a
// different hash by manually editing the URL and pressing Enter, or by
// clicking on an in-page link (e.g. the "current view" link).
// Save the current view state to the browser history.
// Note: In Firefox, history.null could also be null after an in-page
// navigation to the same URL, and without dispatching the popstate
// event: https://bugzilla.mozilla.org/show_bug.cgi?id=1183881
if ( self . uid === 0 ) {
// Replace the previous state if it was not explicitly set.
var previousParams = ( self . previousHash && self . currentBookmark &&
self . previousHash !== self . currentBookmark ) ?
{ hash : self . currentBookmark , page : self . currentPage } :
{ page : 1 } ;
replacePreviousHistoryState ( previousParams , function ( ) {
updateHistoryWithCurrentHash ( ) ;
} ) ;
} else {
// If the state is not set, then the user tried to navigate to a
// different hash by manually editing the URL and pressing Enter, or by
// clicking on an in-page link (e.g. the "current view" link).
// Save the current view state to the browser history.
// Note: In Firefox, history.null could also be null after an in-page
// navigation to the same URL, and without dispatching the popstate
// event: https://bugzilla.mozilla.org/show_bug.cgi?id=1183881
if ( self . uid === 0 ) {
// Replace the previous state if it was not explicitly set.
var previousParams = ( self . previousHash && self . currentBookmark &&
self . previousHash !== self . currentBookmark ) ?
{ hash : self . currentBookmark , page : self . currentPage } :
{ page : 1 } ;
replacePreviousHistoryState ( previousParams , function ( ) {
updateHistoryWithCurrentHash ( ) ;
}
} ) ;
} ) ;
} else {
updateHistoryWithCurrentHash ( ) ;
}
} ) ;
function updateHistoryWithCurrentHash ( ) {
self . previousHash = window . location . hash . slice ( 1 ) ;
self . _pushToHistory ( { hash : self . previousHash } , false , true ) ;
self . _updatePreviousBookmark ( ) ;
}
function updateHistoryWithCurrentHash ( ) {
self . previousHash = window . location . hash . slice ( 1 ) ;
self . _pushToHistory ( { hash : self . previousHash } , false , true ) ;
self . _updatePreviousBookmark ( ) ;
}
function replacePreviousHistoryState ( params , callback ) {
// To modify the previous history entry, the following happens:
// 1. history.back()
// 2. _pushToHistory, which calls history.replaceState( ... )
// 3. history.forward()
// Because a navigation via the history API does not immediately update
// the history state, the popstate event is used for synchronization.
self . historyUnlocked = false ;
// Suppress the hashchange event to avoid side effects caused by
// navigating back and forward.
self . allowHashChange = false ;
window . addEventListener ( 'popstate' , rewriteHistoryAfterBack ) ;
history . back ( ) ;
function rewriteHistoryAfterBack ( ) {
window . removeEventListener ( 'popstate' , rewriteHistoryAfterBack ) ;
window . addEventListener ( 'popstate' , rewriteHistoryAfterForward ) ;
self . _pushToHistory ( params , false , true ) ;
history . forward ( ) ;
}
function rewriteHistoryAfterForward ( ) {
window . removeEventListener ( 'popstate' , rewriteHistoryAfterForward ) ;
self . allowHashChange = true ;
self . historyUnlocked = true ;
callback ( ) ;
}
function replacePreviousHistoryState ( params , callback ) {
// To modify the previous history entry, the following happens:
// 1. history.back()
// 2. _pushToHistory, which calls history.replaceState( ... )
// 3. history.forward()
// Because a navigation via the history API does not immediately update
// the history state, the popstate event is used for synchronization.
self . historyUnlocked = false ;
// Suppress the hashchange event to avoid side effects caused by
// navigating back and forward.
self . allowHashChange = false ;
window . addEventListener ( 'popstate' , rewriteHistoryAfterBack ) ;
history . back ( ) ;
function rewriteHistoryAfterBack ( ) {
window . removeEventListener ( 'popstate' , rewriteHistoryAfterBack ) ;
window . addEventListener ( 'popstate' , rewriteHistoryAfterForward ) ;
self . _pushToHistory ( params , false , true ) ;
history . forward ( ) ;
}
function rewriteHistoryAfterForward ( ) {
window . removeEventListener ( 'popstate' , rewriteHistoryAfterForward ) ;
self . allowHashChange = true ;
self . historyUnlocked = true ;
callback ( ) ;
}
}
function pdfHistoryBeforeUnload ( ) {
var previousParams = self . _getPreviousParams ( null , true ) ;
if ( previousParams ) {
var replacePrevious = ( ! self . current . dest &&
self . current . hash !== self . previousHash ) ;
self . _pushToHistory ( previousParams , false , replacePrevious ) ;
self . _updatePreviousBookmark ( ) ;
}
// Remove the event listener when navigating away from the document,
// since 'beforeunload' prevents Firefox from caching the document.
window . removeEventListener ( 'beforeunload' , pdfHistoryBeforeUnload ) ;
function pdfHistoryBeforeUnload ( ) {
var previousParams = self . _getPreviousParams ( null , true ) ;
if ( previousParams ) {
var replacePrevious = ( ! self . current . dest &&
self . current . hash !== self . previousHash ) ;
self . _pushToHistory ( previousParams , false , replacePrevious ) ;
self . _updatePreviousBookmark ( ) ;
}
// Remove the event listener when navigating away from the document,
// since 'beforeunload' prevents Firefox from caching the document.
window . removeEventListener ( 'beforeunload' , pdfHistoryBeforeUnload ) ;
}
window . addEventListener ( 'beforeunload' , pdfHistoryBeforeUnload ) ;
window . addEventListener ( 'beforeunload' , pdfHistoryBeforeUnload ) ;
window . addEventListener ( 'pageshow' , function pdfHistoryPageShow ( evt ) {
// If the entire viewer (including the PDF file) is cached in
// the browser, we need to reattach the 'beforeunload' event listener
// since the 'DOMContentLoaded' event is not fired on 'pageshow'.
window . addEventListener ( 'beforeunload' , pdfHistoryBeforeUnload ) ;
} ) ;
self . eventBus . on ( 'presentationmodechanged' , function ( e ) {
self . isViewerInPresentationMode = e . active ;
} ) ;
} ,
clearHistoryState : function pdfHistory _clearHistoryState ( ) {
this . _pushOrReplaceState ( null , true ) ;
} ,
_isStateObjectDefined : function pdfHistory _isStateObjectDefined ( state ) {
return ( state && state . uid >= 0 &&
state . fingerprint && this . fingerprint === state . fingerprint &&
state . target && state . target . hash ) ? true : false ;
} ,
_pushOrReplaceState : function pdfHistory _pushOrReplaceState ( stateObj ,
replace ) {
// history.state.chromecomState is managed by chromecom.js.
if ( typeof PDFJSDev !== 'undefined' && PDFJSDev . test ( 'CHROME' ) &&
window . history . state && 'chromecomState' in window . history . state ) {
stateObj = stateObj || { } ;
stateObj . chromecomState = window . history . state . chromecomState ;
}
if ( replace ) {
if ( typeof PDFJSDev === 'undefined' ||
PDFJSDev . test ( 'GENERIC || CHROME' ) ) {
window . history . replaceState ( stateObj , '' , document . URL ) ;
} else {
window . history . replaceState ( stateObj , '' ) ;
}
window . addEventListener ( 'pageshow' , function pdfHistoryPageShow ( evt ) {
// If the entire viewer (including the PDF file) is cached in
// the browser, we need to reattach the 'beforeunload' event listener
// since the 'DOMContentLoaded' event is not fired on 'pageshow'.
window . addEventListener ( 'beforeunload' , pdfHistoryBeforeUnload ) ;
} ) ;
self . eventBus . on ( 'presentationmodechanged' , function ( e ) {
self . isViewerInPresentationMode = e . active ;
} ) ;
} ,
clearHistoryState : function pdfHistory _clearHistoryState ( ) {
this . _pushOrReplaceState ( null , true ) ;
} ,
_isStateObjectDefined : function pdfHistory _isStateObjectDefined ( state ) {
return ( state && state . uid >= 0 &&
state . fingerprint && this . fingerprint === state . fingerprint &&
state . target && state . target . hash ) ? true : false ;
} ,
_pushOrReplaceState : function pdfHistory _pushOrReplaceState ( stateObj ,
replace ) {
// history.state.chromecomState is managed by chromecom.js.
if ( typeof PDFJSDev !== 'undefined' && PDFJSDev . test ( 'CHROME' ) &&
window . history . state && 'chromecomState' in window . history . state ) {
stateObj = stateObj || { } ;
stateObj . chromecomState = window . history . state . chromecomState ;
}
if ( replace ) {
if ( typeof PDFJSDev === 'undefined' ||
PDFJSDev . test ( 'GENERIC || CHROME' ) ) {
window . history . replaceState ( stateObj , '' , document . URL ) ;
} else {
if ( typeof PDFJSDev === 'undefined' ||
PDFJSDev . test ( 'GENERIC || CHROME' ) ) {
window . history . pushState ( stateObj , '' , document . URL ) ;
} else {
window . history . pushState ( stateObj , '' ) ;
}
if ( typeof PDFJSDev !== 'undefined' && PDFJSDev . test ( 'CHROME' ) &&
top === window ) {
chrome . runtime . sendMessage ( 'showPageAction' ) ;
}
window . history . replaceState ( stateObj , '' ) ;
}
} ,
get isHashChangeUnlocked ( ) {
if ( ! this . initialized ) {
return true ;
} else {
if ( typeof PDFJSDev === 'undefined' ||
PDFJSDev . test ( 'GENERIC || CHROME' ) ) {
window . history . pushState ( stateObj , '' , document . URL ) ;
} else {
window . history . pushState ( stateObj , '' ) ;
}
return this . allowHashChange ;
} ,
_updatePreviousBookmark : function pdfHistory _updatePreviousBookmark ( ) {
if ( this . updatePreviousBookmark &&
this . currentBookmark && this . currentPage ) {
this . previousBookmark = this . currentBookmark ;
this . previousPage = this . currentPage ;
this . updatePreviousBookmark = false ;
if ( typeof PDFJSDev !== 'undefined' && PDFJSDev . test ( 'CHROME' ) &&
top === window ) {
chrome . runtime . sendMessage ( 'showPageAction' ) ;
}
} ,
}
} ,
updateCurrentBookmark : function pdfHistoryUpdateCurrentBookmark ( bookmark ,
pageNum ) {
if ( this . initialized ) {
this . currentBookmark = bookmark . substring ( 1 ) ;
this . currentPage = pageNum | 0 ;
this . _updatePreviousBookmark ( ) ;
}
} ,
get isHashChangeUnlocked ( ) {
if ( ! this . initialized ) {
return true ;
}
return this . allowHashChange ;
} ,
_updatePreviousBookmark : function pdfHistory _updatePreviousBookmark ( ) {
if ( this . updatePreviousBookmark &&
this . currentBookmark && this . currentPage ) {
this . previousBookmark = this . currentBookmark ;
this . previousPage = this . currentPage ;
this . updatePreviousBookmark = false ;
}
} ,
updateCurrentBookmark : function pdfHistoryUpdateCurrentBookmark ( bookmark ,
pageNum ) {
if ( this . initialized ) {
this . currentBookmark = bookmark . substring ( 1 ) ;
this . currentPage = pageNum | 0 ;
this . _updatePreviousBookmark ( ) ;
}
} ,
updateNextHashParam : function pdfHistoryUpdateNextHashParam ( param ) {
if ( this . initialized ) {
this . nextHashParam = param ;
}
} ,
updateNextHashParam : function pdfHistoryUpdateNextHashParam ( param ) {
if ( this . initialized ) {
this . nextHashParam = param ;
}
} ,
push : function pdfHistoryPush ( params , isInitialBookmark ) {
if ( ! ( this . initialized && this . historyUnlocked ) ) {
return ;
}
if ( params . dest && ! params . hash ) {
params . hash = ( this . current . hash && this . current . dest &&
this . current . dest === params . dest ) ?
this . current . hash :
this . linkService . getDestinationHash ( params . dest ) . split ( '#' ) [ 1 ] ;
}
if ( params . page ) {
params . page |= 0 ;
push : function pdfHistoryPush ( params , isInitialBookmark ) {
if ( ! ( this . initialized && this . historyUnlocked ) ) {
return ;
}
if ( params . dest && ! params . hash ) {
params . hash = ( this . current . hash && this . current . dest &&
this . current . dest === params . dest ) ?
this . current . hash :
this . linkService . getDestinationHash ( params . dest ) . split ( '#' ) [ 1 ] ;
}
if ( params . page ) {
params . page |= 0 ;
}
if ( isInitialBookmark ) {
var target = window . history . state . target ;
if ( ! target ) {
// Invoked when the user specifies an initial bookmark,
// thus setting initialBookmark, when the document is loaded.
this . _pushToHistory ( params , false ) ;
this . previousHash = window . location . hash . substring ( 1 ) ;
}
if ( isInitialBookmark ) {
var target = window . history . state . target ;
if ( ! target ) {
// Invoked when the user specifies an initial bookmark,
// thus setting initialBookmark, when the document is loaded.
this . _pushToHistory ( params , false ) ;
this . previousHash = window . location . hash . substring ( 1 ) ;
}
this . updatePreviousBookmark = this . nextHashParam ? false : true ;
if ( target ) {
// If the current document is reloaded,
// avoid creating duplicate entries in the history.
this . _updatePreviousBookmark ( ) ;
}
return ;
this . updatePreviousBookmark = this . nextHashParam ? false : true ;
if ( target ) {
// If the current document is reloaded,
// avoid creating duplicate entries in the history.
this . _updatePreviousBookmark ( ) ;
}
if ( this . nextHashParam ) {
if ( this . nextHashParam === params . hash ) {
this . nextHashParam = null ;
this . updatePreviousBookmark = true ;
return ;
}
return ;
}
if ( this . nextHashParam ) {
if ( this . nextHashParam === params . hash ) {
this . nextHashParam = null ;
this . updatePreviousBookmark = true ;
return ;
}
this . nextHashParam = null ;
}
if ( params . hash ) {
if ( this . current . hash ) {
if ( this . current . hash !== params . hash ) {
this . _pushToHistory ( params , true ) ;
} else {
if ( ! this . current . page && params . page ) {
this . _pushToHistory ( params , false , true ) ;
}
this . updatePreviousBookmark = true ;
}
} else {
if ( params . hash ) {
if ( this . current . hash ) {
if ( this . current . hash !== params . hash ) {
this . _pushToHistory ( params , true ) ;
} else {
if ( ! this . current . page && params . page ) {
this . _pushToHistory ( params , false , true ) ;
}
this . updatePreviousBookmark = true ;
}
} else if ( this . current . page && params . page &&
this . current . page !== params . page ) {
} else {
this . _pushToHistory ( params , true ) ;
}
} ,
} else if ( this . current . page && params . page &&
this . current . page !== params . page ) {
this . _pushToHistory ( params , true ) ;
}
} ,
_getPreviousParams : function pdfHistory _getPreviousParams ( onlyCheckPage ,
beforeUnload ) {
if ( ! ( this . currentBookmark && this . currentPage ) ) {
return null ;
} else if ( this . updatePreviousBookmark ) {
this . updatePreviousBookmark = false ;
}
if ( this . uid > 0 && ! ( this . previousBookmark && this . previousPage ) ) {
// Prevent the history from getting stuck in the current state,
// effectively preventing the user from going back/forward in
// the history.
//
// This happens if the current position in the document didn't change
// when the history was previously updated. The reasons for this are
// either:
// 1. The current zoom value is such that the document does not need to,
// or cannot, be scrolled to display the destination.
// 2. The previous destination is broken, and doesn't actally point to a
// position within the document.
// (This is either due to a bad PDF generator, or the user making a
// mistake when entering a destination in the hash parameters.)
_getPreviousParams : function pdfHistory _getPreviousParams ( onlyCheckPage ,
beforeUnload ) {
if ( ! ( this . currentBookmark && this . currentPage ) ) {
return null ;
} else if ( this . updatePreviousBookmark ) {
this . updatePreviousBookmark = false ;
}
if ( this . uid > 0 && ! ( this . previousBookmark && this . previousPage ) ) {
// Prevent the history from getting stuck in the current state,
// effectively preventing the user from going back/forward in
// the history.
//
// This happens if the current position in the document didn't change
// when the history was previously updated. The reasons for this are
// either:
// 1. The current zoom value is such that the document does not need to,
// or cannot, be scrolled to display the destination.
// 2. The previous destination is broken, and doesn't actally point to a
// position within the document.
// (This is either due to a bad PDF generator, or the user making a
// mistake when entering a destination in the hash parameters.)
return null ;
}
if ( ( ! this . current . dest && ! onlyCheckPage ) || beforeUnload ) {
if ( this . previousBookmark === this . currentBookmark ) {
return null ;
}
if ( ( ! this . current . dest && ! onlyCheckPage ) || beforeUnload ) {
if ( this . previousBookmark === this . currentBookmark ) {
return null ;
}
} else if ( this . current . page || onlyCheckPage ) {
if ( this . previousPage === this . currentPage ) {
return null ;
}
} else {
} else if ( this . current . page || onlyCheckPage ) {
if ( this . previousPage === this . currentPage ) {
return null ;
}
var params = { hash : this . currentBookmark , page : this . currentPage } ;
if ( this . isViewerInPresentationMode ) {
params . hash = null ;
}
return params ;
} ,
} else {
return null ;
}
var params = { hash : this . currentBookmark , page : this . currentPage } ;
if ( this . isViewerInPresentationMode ) {
params . hash = null ;
}
return params ;
} ,
_stateObj : function pdfHistory _stateObj ( params ) {
return { fingerprint : this . fingerprint , uid : this . uid , target : params } ;
} ,
_stateObj : function pdfHistory _stateObj ( params ) {
return { fingerprint : this . fingerprint , uid : this . uid , target : params } ;
} ,
_pushToHistory : function pdfHistory _pushToHistory ( params ,
addPrevious , overwrite ) {
if ( ! this . initialized ) {
return ;
}
if ( ! params . hash && params . page ) {
params . hash = ( 'page=' + params . page ) ;
}
if ( addPrevious && ! overwrite ) {
var previousParams = this . _getPreviousParams ( ) ;
if ( previousParams ) {
var replacePrevious = ( ! this . current . dest &&
this . current . hash !== this . previousHash ) ;
this . _pushToHistory ( previousParams , false , replacePrevious ) ;
}
_pushToHistory : function pdfHistory _pushToHistory ( params ,
addPrevious , overwrite ) {
if ( ! this . initialized ) {
return ;
}
if ( ! params . hash && params . page ) {
params . hash = ( 'page=' + params . page ) ;
}
if ( addPrevious && ! overwrite ) {
var previousParams = this . _getPreviousParams ( ) ;
if ( previousParams ) {
var replacePrevious = ( ! this . current . dest &&
this . current . hash !== this . previousHash ) ;
this . _pushToHistory ( previousParams , false , replacePrevious ) ;
}
this . _pushOrReplaceState ( this . _stateObj ( params ) ,
( overwrite || this . uid === 0 ) ) ;
this . currentUid = this . uid ++ ;
this . current = params ;
this . updatePreviousBookmark = true ;
} ,
_goTo : function pdfHistory _goTo ( state ) {
if ( ! ( this . initialized && this . historyUnlocked &&
this . _isStateObjectDefined ( state ) ) ) {
}
this . _pushOrReplaceState ( this . _stateObj ( params ) ,
( overwrite || this . uid === 0 ) ) ;
this . currentUid = this . uid ++ ;
this . current = params ;
this . updatePreviousBookmark = true ;
} ,
_goTo : function pdfHistory _goTo ( state ) {
if ( ! ( this . initialized && this . historyUnlocked &&
this . _isStateObjectDefined ( state ) ) ) {
return ;
}
if ( ! this . reInitialized && state . uid < this . currentUid ) {
var previousParams = this . _getPreviousParams ( true ) ;
if ( previousParams ) {
this . _pushToHistory ( this . current , false ) ;
this . _pushToHistory ( previousParams , false ) ;
this . currentUid = state . uid ;
window . history . back ( ) ;
return ;
}
if ( ! this . reInitialized && state . uid < this . currentUid ) {
var previousParams = this . _getPreviousParams ( true ) ;
if ( previousParams ) {
this . _pushToHistory ( this . current , false ) ;
this . _pushToHistory ( previousParams , false ) ;
this . currentUid = state . uid ;
window . history . back ( ) ;
return ;
}
}
this . historyUnlocked = false ;
}
this . historyUnlocked = false ;
if ( state . target . dest ) {
this . linkService . navigateTo ( state . target . dest ) ;
} else {
this . linkService . setHash ( state . target . hash ) ;
}
this . currentUid = state . uid ;
if ( state . uid > this . uid ) {
this . uid = state . uid ;
}
this . current = state . target ;
this . updatePreviousBookmark = true ;
if ( state . target . dest ) {
this . linkService . navigateTo ( state . target . dest ) ;
} else {
this . linkService . setHash ( state . target . hash ) ;
}
this . currentUid = state . uid ;
if ( state . uid > this . uid ) {
this . uid = state . uid ;
}
this . current = state . target ;
this . updatePreviousBookmark = true ;
var currentHash = window . location . hash . substring ( 1 ) ;
if ( this . previousHash !== currentHash ) {
this . allowHashChange = false ;
}
this . previousHash = currentHash ;
this . historyUnlocked = true ;
} ,
back : function pdfHistoryBack ( ) {
this . go ( - 1 ) ;
} ,
forward : function pdfHistoryForward ( ) {
this . go ( 1 ) ;
} ,
go : function pdfHistoryGo ( direction ) {
if ( this . initialized && this . historyUnlocked ) {
var state = window . history . state ;
if ( direction === - 1 && state && state . uid > 0 ) {
window . history . back ( ) ;
} else if ( direction === 1 && state && state . uid < ( this . uid - 1 ) ) {
window . history . forward ( ) ;
}
var currentHash = window . location . hash . substring ( 1 ) ;
if ( this . previousHash !== currentHash ) {
this . allowHashChange = false ;
}
this . previousHash = currentHash ;
this . historyUnlocked = true ;
} ,
back : function pdfHistoryBack ( ) {
this . go ( - 1 ) ;
} ,
forward : function pdfHistoryForward ( ) {
this . go ( 1 ) ;
} ,
go : function pdfHistoryGo ( direction ) {
if ( this . initialized && this . historyUnlocked ) {
var state = window . history . state ;
if ( direction === - 1 && state && state . uid > 0 ) {
window . history . back ( ) ;
} else if ( direction === 1 && state && state . uid < ( this . uid - 1 ) ) {
window . history . forward ( ) ;
}
}
} ;
}
} ;
exports . PDFHistory = PDFHistory ;
} ) ) ;
export {
PDFHistory ,
} ;
Jonas Jenwald
8 years ago