video9a.html

<!-- THIS FILE BEGAN AS A COPY OF video/video8a.html.
It has been transformed into the true html file for the implements part 1 video.
-->

<!DOCTYPE html>
<html>
<head>

<!--************************************************************************
* The following imported JavaScript code is involved in copying text into  *
* the copy buffer and was obtained from                                    *
*                                                                          *
*    https://clipboardjs.com/                                              *
*                                                                          *
* Note that the directory /dist that contains the clipboard.min.js file    *
* must be moved to the right place and the src address corrected.          *
*************************************************************************-->
<script  src="dist/clipboard.min.js">
</script>


<script>
/***************************************************************************
*                     DATA FOR THE LECTURE                                 *
*                                                                          *
* The following data customizes the page for a particular video.           *
***************************************************************************/

/***************************************************************************
* The name of the lecture.                                                 *
***************************************************************************/
var HEADING = "The Alternating Bit Protocol - Part 1" ;

/***************************************************************************
* Table of Contents                                                        *
*                                                                          *
* Specified by an array, each element of which is a two-element array A    *
* with A[0] the name of a section and A[1] the time in seconds at which    *
* the section of the video begins.                                         *
***************************************************************************/
var tocData = 
   [["Prologue", 4],
    ["Finite Sequences", 44.5],
    ["What the Protocol Should Accomplish", 338.5],
    ["The High Level Spec", 472.3], 
    ["Safety and Liveness", 680.3], 
    ["Weak Fairness",  910.75],
    ["Adding Liveness to a Specification",  1060.5],
    ["Epilogue", 1215]
   ] ;

/***************************************************************************
* Items Displayed at Specified Times                                       *
*                                                                          *
* An array that specifies when items are to be displayed in the Bottom     *
* Section of the page.  Each element of the array is 3-element array A     *
* where A[0] is the id of the item, which is to be displayed from time     *
* A[1] through A[2] (in seconds) of the video.                             *
*                                                                          *
* The the same id should not appear twice in the ids the elements of       *
* timingData, and each of those ids should be the same as the id of one    *
* of the <div> elements in in the Bottom Section of the page, which are    *
* children the <div> element with id "afterVideo".                         *
*                                                                          *
* Note: Putting something at the very end isn't a great idea because on    *
* IE, if the user seeks to the end of the video, IE acts as if it's at     *
* the beginning and doesn't display something that comes at the end.       *
***************************************************************************/
var timingData = 
  [["begin-title",   0,    4],
   ["copy-spec", 243,  251],
   ["download-spec", 622,  626],
   ["copy-formula", 1136,  1139.2],
   ["end-title",  1243, 2000]
  ] ;

</script>
<script src=tlavideo.js> </script>


<title id="titleId"></title>  <!-- title set by createHeading() -->

<!-- The following loads the style sheet for the html files of the videos -->
<link rel="stylesheet" type="text/css" href="tlastyles.css">
</head>

<body onresize="getVideoMag()"> 


<!--************************************************************************
* The body consists of the following sections:                             *
*   - The heading section.                                                 *
*   - The video section.                                                   *
*   - The bottom section.                                                  *
*************************************************************************-->

<!--************************************************************************
* The Heading Section                                                      *
*                                                                          *
* It consists of a single <div> element with id "headingId".  It contains  *
* the name of the lecture.   This section is made invisible when the       *
* video is in normal playing mode - that is, with videoState = "playing"   *
* and timedItemDue = "false".                                              *
*************************************************************************-->
<div id="headingId" style="display:block">
   <!-- The lecture name. -->
   <div style="float:left;width:450px"> 
   <H1 id="h1Id" style="margin-top:0em;margin-bottom:.5em">
   </H1>
   </div>

   <script> createHeading() </script>
</div>

<!--************************************************************************
* The Video Section                                                        *
*                                                                          *
* This is a <div> item containing two subitems: a <video> item that        *
* displays the video and a <div> item that contains the following items:   *
*                                                                          *
*    - The controls for the video's playing size.                          *
*    - Controls for skipping backwards and forwards in the video.          *
*************************************************************************-->
<div style="display:block;clear:left">

   <!--*********************************************************************
   * The <video> element.                                                  *
   **********************************************************************-->
   <video  onpause="pauseEvent()" 
           onplay="playEvent()"
           onfocus="videoGetsFocus()"
           width=450
           height=256
           controls 
           preload = "auto"
           id="videoId">

      <!--********************************************************************
      * The src field of the following <source> tag is the URL of the video. *
      *********************************************************************-->
<!-- Here is the local copy of the video.  
      <source src=  "video9a.mp4">
--> 

<!-- Here is the copy of the video on Channel 9 
   <source 
src="video9a.mp4">
-->

<!--  here is the copy provided by Golnaz Alibeigi  -->

   <source 
src="video9a.mp4">



       Your browser cannot display this tutorial because it does not 
       support the video HTML tag.
   </video> 

   <!--*********************************************************************
   * A <div> containing items displayed on a line below the video.         *
   *                                                                       *
   * One possibility is to remove the controls from the video itself and   *
   * replace them with the items displayed here plus some other controls.  *
   * The controls could also be moved to be on top of the video, and to    *
   * be made visible for a few seconds when the mouse is moved over (and   *
   * perhaps out of) the video.  This would make it possible to prevent    *
   * the user from putting the video into full-screen mode.                *
   **********************************************************************-->
   <div id="below-video">
     <!--*******************************************************************
     * A span for showing the controls for skipping forward and back in    *
     * the video and the "Speed", "Contents" and "How to View" buttons.    *
     * It is created by a tlavideo.jss function.                           *
     ********************************************************************-->
   </div>
</div>

<!--************************************************************************
* The Bottom Section                                                       *
*                                                                          *
* A <div> HTML element with id "afterVideo".  It normally contains the     *
* table of contents when the video is not in normal playing mode.          *
* However, at certain parts of the video, it will be replaced by material  *
* relevant to that part.  That material will consist of a sequence of      *
* <div> elements, identified by their ids.                                 *
*                                                                          *
* The sequence of <div> elements consists of one with id "tocId" followed  *
* by a sequence of elements whose ids are in 1-1 correspondence with the   *
* ids in timingData.                                                       *
*************************************************************************-->
<div id="afterVideo" style="display:block">

   <!--*********************************************************************
   * A <div> element containing the table of contents, which is created    *
   * dynamically by the createContents JavaScript function                 *
   **********************************************************************-->
   <div id="tocId" style="float:left"></div>  
     <script> createContents("tocId", tocData) ; </script>
   </div>

   <div id="rightBottom" style="display:block" >

    <!--********************************************************************
    * Next comes the sequence of items that are to appear, with the video  *
    * minimized, at certain points in the video.  The timingData variable  *
    * specifies at what point in the video they appear.                    *
    *********************************************************************--> 

   <!--*********************************************************************
   * This is the call-out to appear at the beginning of the video.         *
   **********************************************************************-->
    <div id = "begin-title" style="float:left">
      <div style = 
           "float:left;margin-left:-20px;font-size:20px;font-family:Calibri">
      <h3 class="contents">Lecture 9 - Part 1</h3>
       <p style="margin-left:2em;margin-top:-1em;width:15em">   

        This web page was written on:<br> 
         &nbsp;&nbsp;30 August 2021<BR><BR>
        The video was produced on:<br> 
         &nbsp;&nbsp;7 December 2017 
     </p>
      </div>
     <div id = "item0a" style = "float:left;margin-left:-4em">
           <script> createContents("item0a", tocData) ; 
          </script>
      </div>
         </div>

    <!--********************************************************************
    * The "What's wrong with first FillSmall definition" call-out.         *
    *********************************************************************-->
<!--
     <div id = "whats-wrong" style="float:left">
      <div style = 
           "float:left;margin-left:30px;font-size:30px;font-family:Calibri">
        <p>
        Type a space to stop the video.
        </p>
      </div>
    </div>
-->
    <!--********************************************************************
    * The "Copy Spec" call-out.                                            *
    *********************************************************************-->
     <div id = "copy-spec" style="float:left; margin-top:20px"> 
      <font style="font-size:17px;font-family:sans-serif"> 
        <div style="width:420px;float:left;margin-left:25px">
           Copy the following tiny text, either by
        clicking on the <code>Copy</code>
   button below it, or by your usual method of copying
        text.&nbsp;  

           <div style="padding-left:5em;padding-top:.5em">
<pre class="copyBigText" id="bar">
EXTENDS Integers, Sequences

Remove(i, seq) == 
  [j \in 1..(Len(seq)-1) |-> IF j < i THEN seq[j] 
                                      ELSE seq[j+1]]
</pre>
<button class="btn" data-clipboard-target="#bar">
    Copy Text
</button>
        </div>
      </div>
       </font> 
  </div>

    <!--********************************************************************
    * The "Download Spec" call-out.                                        *
    *********************************************************************-->
     <div id = "download-spec" style="float:left">
      <div style = 
           "float:left;margin-top:-5px;margin-left:20px;font-size:25px;font-family:Calibri">
        <p>
        Stop the video and right-click on the<br> following link
        to download the file:<br>
         &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
          <A href="ABSpec.tla">ABSpec.tla</a>
        </p>
      </div>
    </div>


    <!--********************************************************************
    * The "Copy Formula" call-out.                                            *
    *********************************************************************-->
     <div id = "copy-formula" style="float:left; margin-top:20px"> 
      <font style="font-size:17px;font-family:sans-serif"> 
        <div style="width:420px;float:left;margin-left:25px">
           Copy the following tiny text, either by
        clicking on the <code>Copy</code>
   button below it, or by your usual method of copying
        text.&nbsp;  

           <div style="padding-left:5em;padding-top:.5em">
<pre class="copyBigText" id="bar2">
\A v \in Data \X {0,1} : (AVar = v) ~> (BVar = v)
</pre>
<button class="btn" data-clipboard-target="#bar2">
    Copy Text
</button>
        </div> 
      </div>
       </font> 
  </div>


<!--
        <div style="float:left;width:20em;padding-left:3em">
        Stop the video and copy this specification, either by
        clicking on the button or by the usual way of copying
        text.&nbsp;  If you
          paste it into a model editor in the Toolbox, it will appear
          in a normal size.&nbsp;  If you paste it into another text editor, 
          you may have to 
          increase the text's font size to make it readable.
        </div>
       </font> 
-->
    </div>



<!--  HERE IS AN EXAMPLE OF OPENING A VIDEO IN A NEW WINDOW 
    <div id="item2" style="position:relative;  top:1em;left:4em">
         
           <div style="text-align:left;width:30em">
             <font style="font-size:19px;font-family:sans-serif">
             <A href="summary-standalone.pdf" target=_blank>
                <b>The TLA+ "Cheat Sheet"</b></font>
             </A>
           <p style="font-size:18px;font-family:sans-serif"> 
            Left-click to open it in a new window, 
               or right-click <br> and select 
              &nbsp;<i>Save as ...</i>&nbsp;
               to download it.
           </p>
           </div>

  </div>
-->
  <!--**********************************************************************
  * This is the end of the sequence of <div> items that are to be          *
  * displayed at specified points in the video.                            *
  ***********************************************************************-->


   <!--*********************************************************************
   * The display at the end of the video.                                  *
   **********************************************************************-->
    <div id = "end-title" style="float:left">
      <div id = "item0b" style = "float:left">
           <script> createContents("item0b", tocData) ; </script>
      </div>
      <div style = 
           "float:left;margin-left:10px;font-size:20px;font-family:Calibri">
      <h3 class="contents"> The Next Video</h3>
       <p style="margin-left:2em;margin-top:1em;width:15em">   
        <A href="video9b.html">The Alternating Bit Protocol - Part 2</a>
     </p>
      </div>
    </div>


</div>


</body> 

</html>
