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video4.html
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<!-- THIS FILE BEGAN AS A COPY OF video/video3.html.
It has been transformed into the true html file for the diehard 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 = "Die Hard" ;
/***************************************************************************
* 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", 2.8],
["The Die Hard Problem", 25],
["Getting Started ", 67.5],
["The Spec", 244.5],
["The Next-State Formula", 319.5],
["Pouring Between Jugs", 502],
["Saving Our Heroes", 573.5],
["SmallToBig and BigToSmall", 864],
["Checking Your Definitions",994.5],
["Epilogue", 1152]
] ;
/***************************************************************************
* 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, 2],
["whats-wrong", 408, 412],
["write-defs", 564, 568],
["copy-spec", 620, 623],
["end-title", 1175, 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:335px">
<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= "video4.mp4">
-->
<!-- Here is the copy of the video on Channel 9
<source
src="video4.mp4">
-->
<!-- Here is new Channel 9 copy provided by Golnaz Alibeigi -->
<source
src="video4.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 4</h3>
<p style="margin-left:2em;margin-top:-1em;width:15em">
This web page was written on:<br>
30 August 2021<BR><BR>
The video was produced on:<br>
14 May 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 "Write Your Definitions " call-out. *
*********************************************************************-->
<div id = "write-defs" style="float:left">
<div style =
"float:left;margin-top:-15px;margin-left:60px;font-size:30px;font-family:Calibri">
<p>
Stop the video and write<br>
down your definitions.
</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.
<div style="padding-left:5em;padding-top:.5em">
<pre class="copyText" id="bar">
EXTENDS Integers
VARIABLES small, big
TypeOK == /\ small \in 0..3
/\ big \in 0..5
Init == /\ big = 0
/\ small = 0
FillSmall == /\ small' = 3
/\ big' = big
FillBig == /\ big' = 5
/\ small' = small
EmptySmall == /\ small' = 0
/\ big' = big
EmptyBig == /\ big' = 0
/\ small' = small
SmallToBig == IF big + small =< 5
THEN /\ big' = big + small
/\ small' = 0
ELSE /\ big' = 5
/\ small' = small - (5 - big)
BigToSmall == IF big + small =< 3
THEN /\ big' = 0
/\ small' = big + small
ELSE /\ big' = small - (3 - big)
/\ small' = 3
Next == \/ FillSmall
\/ FillBig
\/ EmptySmall
\/ EmptyBig
\/ SmallToBig
\/ BigToSmall
</pre>
<button class="btn" data-clipboard-target="#bar"
style="margin-top:5px;margin-bottom:10px">
Copy
</button>
</div>
<div style="float:left;width:420px;margin-top:5px">
Then paste the text into the module editor as
the body of specification <code>DieHard</code> .
</div>
</div>
</font>
</div>
<!--*********************************************************************
* 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="video5.html">Transaction Commit</a>
</p>
</div>
</div>
<!-- HERE IS AN EXAMPLE OF DISPLAYING TEXXT TO BE COPIED
<div id="item3" style="position:relative;top:2em;left:6em;width:60em">
<font style="font-size:17px;font-family:sans-serif">
<div style="width:15em;float:left;">
A tutorial might ask you to copy and paste a specification
like this one:
<div style="padding-left:3em;padding-top:.5em">
<pre class="copyText" id="bar">
MODULE DieHard
(***************************************************************************)
(* In the movie Die Hard J1, the heros must obtain exactly 4 gallons of *)
(* water using a J2 gallon jug, a J1 gallon jug, and a water faucet. Our *)
(* goal: to get TLC to solve the problem for us. *)
(* *)
(* First, we write a spec that describes all allowable behaviors of our *)
(* heros. *)
(***************************************************************************)
EXTENDS Integers
(*************************************************************************)
(* This statement imports the definitions of the ordinary operators on *)
(* integers, such as +. *)
(*************************************************************************)
CONSTANTS J1, J2, G
=============================================================================
</pre>
<button class="btn" data-clipboard-target="#bar">
Copy Text
</button>
</div>
</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. If you
paste it into a model editor in the Toolbox, it will appear
in a normal size. 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
<i>Save as ...</i>
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. *
***********************************************************************-->
</div>
</body>
</html>