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<pre id='vimCodeElement'>
<span class="SalientComment">## clicking on the code typed into a sandbox toggles its trace</span>

<span class="muScenario">scenario</span> sandbox-click-on-code-toggles-app-trace [
  <span class="Constant">local-scope</span>
  trace-until <span class="Constant">100/app</span>  <span class="Comment"># trace too long</span>
  assume-screen <span class="Constant">100/width</span>, <span class="Constant">10/height</span>
  <span class="Comment"># basic recipe</span>
  recipes:text<span class="Special"> &lt;- </span>new <span class="Constant">[ </span>
<span class="Constant">recipe foo [</span>
<span class="Constant">  stash [abc]</span>
]]
  env:&amp;:environment<span class="Special"> &lt;- </span>new-programming-environment screen, recipes, <span class="Constant">[foo]</span>
  <span class="Comment"># run it</span>
  assume-console [
    press F4
  ]
  event-loop screen, console, env
  screen-should-contain [
   <span class="Constant"> .                                                                                 run (F4)           .</span>
   <span class="Constant"> .                                                  ╎                                                 .</span>
   <span class="Constant"> .recipe foo [                                      ╎─────────────────────────────────────────────────.</span>
   <span class="Constant"> .  stash [abc]                                     ╎0   edit          copy            delete         .</span>
   <span class="Constant"> .]                                                 ╎foo                                              .</span>
<span class="Constant">    .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
   <span class="Constant"> .                                                  ╎                                                 .</span>
  ]
  <span class="Comment"># click on the code in the sandbox</span>
  assume-console [
    left-click <span class="Constant">4</span>, <span class="Constant">51</span>
  ]
  run [
    event-loop screen, console, env
    cursor:char<span class="Special"> &lt;- </span>copy <span class="Constant">9251/␣</span>
    print screen, cursor
  ]
  <span class="Comment"># trace now printed and cursor shouldn't have budged</span>
  screen-should-contain [
   <span class="Constant"> .                                                                                 run (F4)           .</span>
   <span class="Constant"> .␣                                                 ╎                                                 .</span>
   <span class="Constant"> .recipe foo [                                      ╎─────────────────────────────────────────────────.</span>
   <span class="Constant"> .  stash [abc]                                     ╎0   edit          copy            delete         .</span>
   <span class="Constant"> .]                                                 ╎foo                                              .</span>
   <span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎abc                                              .</span>
  ]
  screen-should-contain-in-color <span class="Constant">245/grey</span>, [
   <span class="Constant"> .                                                                                                    .</span>
   <span class="Constant"> .                                                  ╎                                                 .</span>
   <span class="Constant"> .                                                  ╎─────────────────────────────────────────────────.</span>
   <span class="Constant"> .                                                  ╎                                                 .</span>
   <span class="Constant"> .                                                  ╎                                                 .</span>
   <span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎abc                                              .</span>
  ]
  <span class="Comment"># click again on the same region</span>
  assume-console [
    left-click <span class="Constant">4</span>, <span class="Constant">55</span>
  ]
  run [
    event-loop screen, console, env
    print screen, cursor
  ]
  <span class="Comment"># trace hidden again</span>
  screen-should-contain [
   <span class="Constant"> .                                                                                 run (F4)           .</span>
   <span class="Constant"> .␣                                                 ╎                                                 .</span>
   <span class="Constant"> .recipe foo [                                      ╎─────────────────────────────────────────────────.</span>
   <span class="Constant"> .  stash [abc]                                     ╎0   edit          copy            delete         .</span>
   <span class="Constant"> .]                                                 ╎foo                                              .</span>
<span class="Constant">    .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
   <span class="Constant"> .                                                  ╎                                                 .</span>
  ]
]

<span class="muScenario">scenario</span> sandbox-shows-app-trace-and-result [
  <span class="Constant">local-scope</span>
  trace-until <span class="Constant">100/app</span>  <span class="Comment"># trace too long</span>
  assume-screen <span class="Constant">100/width</span>, <span class="Constant">10/height</span>
  <span class="Comment"># basic recipe</span>
  recipes:text<span class="Special"> &lt;- </span>new <span class="Constant">[ </span>
<span class="Constant">recipe foo [</span>
<span class="Constant">  stash [abc]</span>
  <span class="muControl">reply</span> <span class="Constant">4</span>
]]
  env:&amp;:environment<span class="Special"> &lt;- </span>new-programming-environment screen, recipes, <span class="Constant">[foo]</span>
  <span class="Comment"># run it</span>
  assume-console [
    press F4
  ]
  event-loop screen, console, env
  screen-should-contain [
   <span class="Constant"> .                                                                                 run (F4)           .</span>
   <span class="Constant"> .                                                  ╎                                                 .</span>
   <span class="Constant"> .recipe foo [                                      ╎─────────────────────────────────────────────────.</span>
   <span class="Constant"> .  stash [abc]                                     ╎0   edit          copy            delete         .</span>
   <span class="Constant"> .  reply 4                                         ╎foo                                              .</span>
   <span class="Constant"> .]                                                 ╎4                                                .</span>
<span class="Constant">    .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
   <span class="Constant"> .                                                  ╎                                                 .</span>
  ]
  <span class="Comment"># click on the code in the sandbox</span>
  assume-console [
    left-click <span class="Constant">4</span>, <span class="Constant">51</span>
  ]
  run [
    event-loop screen, console, env
  ]
  <span class="Comment"># trace now printed above result</span>
  screen-should-contain [
   <span class="Constant"> .                                                                                 run (F4)           .</span>
   <span class="Constant"> .                                                  ╎                                                 .</span>
   <span class="Constant"> .recipe foo [                                      ╎─────────────────────────────────────────────────.</span>
   <span class="Constant"> .  stash [abc]                                     ╎0   edit          copy            delete         .</span>
   <span class="Constant"> .  reply 4                                         ╎foo                                              .</span>
   <span class="Constant"> .]                                                 ╎abc                                              .</span>
   <span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎8 instructions run                               .</span>
   <span class="Constant"> .                                                  ╎4                                                .</span>
   <span class="Constant"> .                                                  ╎─────────────────────────────────────────────────.</span>
   <span class="Constant"> .                                                  ╎                                                 .</span>
  ]
]

<span class="muScenario">scenario</span> clicking-on-app-trace-does-nothing [
  <span class="Constant">local-scope</span>
  trace-until <span class="Constant">100/app</span>  <span class="Comment"># trace too long</span>
  assume-screen <span class="Constant">100/width</span>, <span class="Constant">10/height</span>
  env:&amp;:environment<span class="Special"> &lt;- </span>new-programming-environment screen, <span class="Constant">[]</span>, <span class="Constant">[stash 123456789]</span>
  <span class="Comment"># create and expand the trace</span>
  assume-console [
    press F4
    left-click <span class="Constant">4</span>, <span class="Constant">51</span>
  ]
  event-loop screen, console, env
  screen-should-contain [
   <span class="Constant"> .                                                                                 run (F4)           .</span>
   <span class="Constant"> .                                                  ╎                                                 .</span>
<span class="Constant">    .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
   <span class="Constant"> .                                                  ╎0   edit          copy            delete         .</span>
   <span class="Constant"> .                                                  ╎stash 123456789                                  .</span>
   <span class="Constant"> .                                                  ╎123456789                                        .</span>
  ]
  <span class="Comment"># click on the stash under the edit-button region (or any of the other buttons, really)</span>
  assume-console [
    left-click <span class="Constant">5</span>, <span class="Constant">57</span>
  ]
  run [
    event-loop screen, console, env
  ]
  <span class="Comment"># no change; doesn't die</span>
  screen-should-contain [
   <span class="Constant"> .                                                                                 run (F4)           .</span>
   <span class="Constant"> .                                                  ╎                                                 .</span>
<span class="Constant">    .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
   <span class="Constant"> .                                                  ╎0   edit          copy            delete         .</span>
   <span class="Constant"> .                                                  ╎stash 123456789                                  .</span>
   <span class="Constant"> .                                                  ╎123456789                                        .</span>
  ]
]

<span class="muData">container</span> sandbox [
  trace:text
  display-trace?:bool
]

<span class="Comment"># replaced in a later layer</span>
<span class="muRecipe">def!</span> update-sandbox sandbox:&amp;:sandbox, env:&amp;:environment, idx:num<span class="muRecipe"> -&gt; </span>sandbox:&amp;:sandbox, env:&amp;:environment [
  <span class="Constant">local-scope</span>
  <span class="Constant">load-ingredients</span>
  data:text<span class="Special"> &lt;- </span>get *sandbox, <span class="Constant">data:offset</span>
  response:text, _, fake-screen:&amp;:screen, trace:text<span class="Special"> &lt;- </span>run-sandboxed data
  *sandbox<span class="Special"> &lt;- </span>put *sandbox, <span class="Constant">response:offset</span>, response
  *sandbox<span class="Special"> &lt;- </span>put *sandbox, <span class="Constant">screen:offset</span>, fake-screen
  *sandbox<span class="Special"> &lt;- </span>put *sandbox, <span class="Constant">trace:offset</span>, trace
]

<span class="Comment"># clicks on sandbox code toggle its display-trace? flag</span>
<span class="muRecipe">after</span> <span class="Constant">&lt;global-touch&gt;</span> [
  <span class="Comment"># check if it's inside the code of any sandbox</span>
  <span class="Delimiter">{</span>
    sandbox-left-margin:num<span class="Special"> &lt;- </span>get *current-sandbox, <span class="Constant">left:offset</span>
    click-column:num<span class="Special"> &lt;- </span>get t, <span class="Constant">column:offset</span>
    on-sandbox-side?:bool<span class="Special"> &lt;- </span>greater-or-equal click-column, sandbox-left-margin
    <span class="muControl">break-unless</span> on-sandbox-side?
    first-sandbox:&amp;:sandbox<span class="Special"> &lt;- </span>get *env, <span class="Constant">sandbox:offset</span>
    <span class="muControl">break-unless</span> first-sandbox
    first-sandbox-begins:num<span class="Special"> &lt;- </span>get *first-sandbox, <span class="Constant">starting-row-on-screen:offset</span>
    click-row:num<span class="Special"> &lt;- </span>get t, <span class="Constant">row:offset</span>
    below-sandbox-editor?:bool<span class="Special"> &lt;- </span>greater-or-equal click-row, first-sandbox-begins
    <span class="muControl">break-unless</span> below-sandbox-editor?
    <span class="Comment"># identify the sandbox whose code is being clicked on</span>
    sandbox:&amp;:sandbox<span class="Special"> &lt;- </span>find-click-in-sandbox-code env, click-row
    <span class="muControl">break-unless</span> sandbox
    <span class="Comment"># toggle its display-trace? property</span>
    x:bool<span class="Special"> &lt;- </span>get *sandbox, <span class="Constant">display-trace?:offset</span>
    x<span class="Special"> &lt;- </span>not x
    *sandbox<span class="Special"> &lt;- </span>put *sandbox, <span class="Constant">display-trace?:offset</span>, x
    hide-screen screen
    screen<span class="Special"> &lt;- </span>render-sandbox-side screen, env, render
    screen<span class="Special"> &lt;- </span>update-cursor screen, recipes, current-sandbox, sandbox-in-focus?, env
    <span class="Comment"># no change in cursor</span>
    show-screen screen
    <span class="muControl">loop</span> +next-event
  <span class="Delimiter">}</span>
]

<span class="muRecipe">def</span> find-click-in-sandbox-code env:&amp;:environment, click-row:num<span class="muRecipe"> -&gt; </span>sandbox:&amp;:sandbox [
  <span class="Constant">local-scope</span>
  <span class="Constant">load-ingredients</span>
  <span class="Comment"># assert click-row &gt;= sandbox.starting-row-on-screen</span>
  sandbox<span class="Special"> &lt;- </span>get *env, <span class="Constant">sandbox:offset</span>
  start:num<span class="Special"> &lt;- </span>get *sandbox, <span class="Constant">starting-row-on-screen:offset</span>
  clicked-on-sandboxes?:bool<span class="Special"> &lt;- </span>greater-or-equal click-row, start
  assert clicked-on-sandboxes?, <span class="Constant">[extract-sandbox called on click to sandbox editor]</span>
  <span class="Comment"># while click-row &lt; sandbox.next-sandbox.starting-row-on-screen</span>
  <span class="Delimiter">{</span>
    next-sandbox:&amp;:sandbox<span class="Special"> &lt;- </span>get *sandbox, <span class="Constant">next-sandbox:offset</span>
    <span class="muControl">break-unless</span> next-sandbox
    next-start:num<span class="Special"> &lt;- </span>get *next-sandbox, <span class="Constant">starting-row-on-screen:offset</span>
    found?:bool<span class="Special"> &lt;- </span>lesser-than click-row, next-start
    <span class="muControl">break-if</span> found?
    sandbox<span class="Special"> &lt;- </span>copy next-sandbox
    <span class="muControl">loop</span>
  <span class="Delimiter">}</span>
  <span class="Comment"># return sandbox if click is in its code region</span>
  code-ending-row:num<span class="Special"> &lt;- </span>get *sandbox, <span class="Constant">code-ending-row-on-screen:offset</span>
  click-above-response?:bool<span class="Special"> &lt;- </span>lesser-than click-row, code-ending-row
  start:num<span class="Special"> &lt;- </span>get *sandbox, <span class="Constant">starting-row-on-screen:offset</span>
  click-below-menu?:bool<span class="Special"> &lt;- </span>greater-than click-row, start
  click-on-sandbox-code?:bool<span class="Special"> &lt;- </span>and click-above-response?, click-below-menu?
  <span class="Delimiter">{</span>
    <span class="muControl">break-if</span> click-on-sandbox-code?
    <span class="muControl">return</span> <span class="Constant">0/no-click-in-sandbox-output</span>
  <span class="Delimiter">}</span>
  <span class="muControl">return</span> sandbox
]

<span class="Comment"># when rendering a sandbox, dump its trace before response/warning if display-trace? property is set</span>
<span class="muRecipe">after</span> <span class="Constant">&lt;render-sandbox-results&gt;</span> [
  <span class="Delimiter">{</span>
    display-trace?:bool<span class="Special"> &lt;- </span>get *sandbox, <span class="Constant">display-trace?:offset</span>
    <span class="muControl">break-unless</span> display-trace?
    sandbox-trace:text<span class="Special"> &lt;- </span>get *sandbox, <span class="Constant">trace:offset</span>
    <span class="muControl">break-unless</span> sandbox-trace  <span class="Comment"># nothing to print; move on</span>
    row, screen<span class="Special"> &lt;- </span>render-text screen, sandbox-trace, left, right, <span class="Constant">245/grey</span>, row
  <span class="Delimiter">}</span>
<span class="Constant">  &lt;render-sandbox-trace-done&gt;</span>
]
</pre>
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