html - R - RSelenium, press Next button & change dropdown options to 25 -


op warning: not @ html.

i trying use rselenium remote-drive (browsername='phantomjs') scrape links on login required page. able handle login part when try extract links in table, cannot scrape of them because;

1- table has limited view of 10-row displays. can altered using dropdown option 25.

 things have tried:    option <- remdr$findelement(using = 'xpath', "//*/option[@value = '25']")  option$clickelement()   result error: element hidden

2- cannot press next button @ bottom of table see links in next page. 

 similarly, think able find 4 buttons using findelement(). when run;   buttons <- remdr$client$findelement("class name", "ag-paging-button")  nextbutton <- buttons[[3]]  nextbutton$click()  nextbutton$clickelement()

then run link extraction "href" same 10 links if nothing had happened.

my issue can fixed getting part 2 done, appreciate if answer first 1 too.

here how selected chunks of html source code looks like.

<div class="pxl-aggrid-pagesize">     "displaying: "          <select id="pxl-ag-grid-pageselect">        <option value="10">10</option>         <option value="15">15</option>          <option value="20">20</option>           <option value="25">25</option>     </select>  </div>                          <div class="ag-paging-panel ag-font-style">     <span class="ag-paging-page-summary-panel">        <button class="ag-paging-button" ref="btfirst" disabled type="button">first</button>         <button class="ag-paging-button" ref="btprevious" disabled type="button">previous</button>          "                   page "          <span ref="lbcurrent">1</span>          " of "          <span ref="lbtotal">0</span>          <button class="ag-paging-button" ref="btnext" disabled type="button">next</button>           <button class="ag-paging-button" ref="btlast" disabled type="button">last</button>

i able mousemovetolocation() function. surely, need modification based on layout used website itself. however, might to; code attached below. 

  allbuttons <- remdr$client$findelements("xpath", "//button[@class='ag-paging-button']")     allbuttonstext <- sapply(allbuttons, function(x)x$getelementtext())     nextbuttonnumber <- grep('next', unlist(allbuttonstext))        remdr$client$mousemovetolocation(webelement=allbuttons[[nextbuttonnumber]])     remdr$client$click(1)

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