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121 lines
3.0 KiB
JavaScript
Executable File
121 lines
3.0 KiB
JavaScript
Executable File
/**********************************************************************
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*
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*
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*
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**********************************************************************/
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//var DEBUG = DEBUG != null ? DEBUG : true
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/*********************************************************************/
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var BASE_URL_HISTORY = []
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var BASE_URL_LIMIT = 10
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/**********************************************************************
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* URL history...
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*/
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// Setup history event handlers...
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//
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// NOTE: this will save history state to localStorage...
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function setupBaseURLHistory(){
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$('.viewer')
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.on('baseURLChanged', function(evt, old_url, new_url){
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var updated = false
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// store the old and new urls in history unless they already
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// exist...
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if(BASE_URL_HISTORY.indexOf(old_url) < 0){
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BASE_URL_HISTORY.splice(0, 0, old_url)
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updated = true
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}
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if(BASE_URL_HISTORY.indexOf(new_url) < 0){
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BASE_URL_HISTORY.splice(0, 0, new_url)
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updated = true
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}
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// truncate the history if needed...
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if(BASE_URL_HISTORY.length > BASE_URL_LIMIT){
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BASE_URL_HISTORY.splice(BASE_URL_LIMIT, BASE_URL_HISTORY.length)
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updated = true
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}
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// XXX is this the right place for this???
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if(updated){
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saveLocalStorageBaseURLHistory()
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}
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})
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}
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// Push a url to top of history...
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//
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// NOTE: this does not care if a url exists or not, all other instances
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// will get removed...
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// NOTE: this will not do any loading...
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// NOTE: this will save history state to localStorage...
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function pushURLHistory(url){
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url = url == null ? BASE_URL : url
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while(BASE_URL_HISTORY.indexOf(url) >= 0){
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BASE_URL_HISTORY.splice(BASE_URL_HISTORY.indexOf(url), 1)
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}
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BASE_URL_HISTORY.splice(0, 0, url)
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// XXX is this the right place for this???
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saveLocalStorageBaseURLHistory()
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return url
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}
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// Get current position in history...
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//
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function getURLHistoryPosition(){
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return BASE_URL_HISTORY.indexOf(BASE_URL)
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}
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// Get next/prev relative position in history...
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//
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function getURLHistoryNext(){
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var res = BASE_URL_HISTORY[ getURLHistoryPosition() - 1]
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return res == null ? BASE_URL : res
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}
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function getURLHistoryPrev(){
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var res = BASE_URL_HISTORY[ getURLHistoryPosition() + 1 ]
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return res == null ? BASE_URL : res
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}
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/**********************************************************************
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* Actions...
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*/
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// Make a history load action...
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//
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// NOTE: this will not affect history url order...
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function makeURLHistoryLoader(get, end_msg){
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return function(){
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var url = get()
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if(url != BASE_URL){
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statusNotify(loadDir(url))
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} else {
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showStatusQ('History: '+ end_msg +'...')
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}
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return url
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}
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}
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var loadURLHistoryNext = makeURLHistoryLoader(getURLHistoryNext, 'at last URL')
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var loadURLHistoryPrev = makeURLHistoryLoader(getURLHistoryPrev, 'at first URL')
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/**********************************************************************
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* vim:set ts=4 sw=4 : */
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