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<pre id='vimCodeElement'>
<span class="SalientComment">## editing sandboxes after they've been created</span>

<span class="muScenario">scenario</span> clicking-on-a-sandbox-moves-it-to-editor [
  $close-trace  <span class="Comment"># trace too long</span>
  assume-screen <span class="Constant">40/width</span>, <span class="Constant">10/height</span>
  <span class="Comment"># basic recipe</span>
  <span class="Constant">1</span>:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[ </span>
<span class="Constant">recipe foo [</span>
<span class="Constant">  add 2, 2</span>
<span class="Constant">]</span>]
  <span class="Comment"># run it</span>
  <span class="Constant">2</span>:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[foo]</span>
  assume-console [
    press F4
  ]
  <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> &lt;- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character
  event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data
  screen-should-contain [
   <span class="Constant"> .                     run (F4)           .</span>
   <span class="Constant"> .                    ┊                   .</span>
   <span class="Constant"> .recipe foo [        ┊━━━━━━━━━━━━━━━━━━━.</span>
   <span class="Constant"> .  add 2, 2          ┊                  x.</span>
   <span class="Constant"> .]                   ┊foo                .</span>
   <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊4                  .</span>
   <span class="Constant"> .                    ┊━━━━━━━━━━━━━━━━━━━.</span>
   <span class="Constant"> .                    ┊                   .</span>
  ]
  <span class="Comment"># click somewhere on the sandbox</span>
  assume-console [
    left-click <span class="Constant">3</span>, <span class="Constant">30</span>
  ]
  run [
    event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data
  ]
  <span class="Comment"># it pops back into editor</span>
  screen-should-contain [
   <span class="Constant"> .                     run (F4)           .</span>
   <span class="Constant"> .                    ┊foo                .</span>
   <span class="Constant"> .recipe foo [        ┊━━━━━━━━━━━━━━━━━━━.</span>
   <span class="Constant"> .  add 2, 2          ┊                   .</span>
   <span class="Constant"> .]                   ┊                   .</span>
   <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊                   .</span>
   <span class="Constant"> .                    ┊                   .</span>
   <span class="Constant"> .                    ┊                   .</span>
  ]
  <span class="Comment"># cursor should be in the right place</span>
  assume-console [
    type <span class="Constant">[0]</span>
  ]
  run [
    event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data
  ]
  screen-should-contain [
   <span class="Constant"> .                     run (F4)           .</span>
   <span class="Constant"> .                    ┊0foo               .</span>
   <span class="Constant"> .recipe foo [        ┊━━━━━━━━━━━━━━━━━━━.</span>
   <span class="Constant"> .  add 2, 2          ┊                   .</span>
   <span class="Constant"> .]                   ┊                   .</span>
   <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊                   .</span>
   <span class="Constant"> .                    ┊                   .</span>
   <span class="Constant"> .                    ┊                   .</span>
  ]
]

<span class="muRecipe">after</span> <span class="Constant">&lt;global-touch&gt;</span> [
  <span class="Comment"># right side of screen and below sandbox editor? pop appropriate sandbox</span>
  <span class="Comment"># contents back into sandbox editor provided it's empty</span>
  <span class="Delimiter">{</span>
    sandbox-left-margin:number<span class="Special"> &lt;- </span>get *current-sandbox, <span class="Constant">left:offset</span>
    click-column:number<span class="Special"> &lt;- </span>get *t, <span class="Constant">column:offset</span>
    on-sandbox-side?:boolean<span class="Special"> &lt;- </span>greater-or-equal click-column, sandbox-left-margin
    <span class="muControl">break-unless</span> on-sandbox-side?
    first-sandbox:address:sandbox-data<span class="Special"> &lt;- </span>get *env, <span class="Constant">sandbox:offset</span>
    <span class="muControl">break-unless</span> first-sandbox
    first-sandbox-begins:number<span class="Special"> &lt;- </span>get *first-sandbox, <span class="Constant">starting-row-on-screen:offset</span>
    click-row:number<span class="Special"> &lt;- </span>get *t, <span class="Constant">row:offset</span>
    below-sandbox-editor?:boolean<span class="Special"> &lt;- </span>greater-or-equal click-row, first-sandbox-begins
    <span class="muControl">break-unless</span> below-sandbox-editor?
    empty-sandbox-editor?:boolean<span class="Special"> &lt;- </span>empty-editor? current-sandbox
    <span class="muControl">break-unless</span> empty-sandbox-editor?  <span class="Comment"># make the user hit F4 before editing a new sandbox</span>
    <span class="Comment"># identify the sandbox to edit and remove it from the sandbox list</span>
    sandbox:address:sandbox-data<span class="Special"> &lt;- </span>extract-sandbox env, click-row
    text:address:array:character<span class="Special"> &lt;- </span>get *sandbox, <span class="Constant">data:offset</span>
    current-sandbox<span class="Special"> &lt;- </span>insert-text current-sandbox, text
    hide-screen screen
    screen<span class="Special"> &lt;- </span>render-sandbox-side screen, env
    screen<span class="Special"> &lt;- </span>update-cursor screen, recipes, current-sandbox, *sandbox-in-focus?
    show-screen screen
    <span class="muControl">loop</span> <span class="Constant">+next-event:label</span>
  <span class="Delimiter">}</span>
]

<span class="muRecipe">recipe</span> empty-editor? [
  <span class="Constant">local-scope</span>
  editor:address:editor-data<span class="Special"> &lt;- </span><span class="Constant">next-ingredient</span>
  head:address:duplex-list<span class="Special"> &lt;- </span>get *editor, <span class="Constant">data:offset</span>
  first:address:duplex-list<span class="Special"> &lt;- </span>next-duplex head
  result:boolean<span class="Special"> &lt;- </span>not first
  <span class="muControl">reply</span> result
]

<span class="muRecipe">recipe</span> extract-sandbox [
  <span class="Constant">local-scope</span>
  env:address:programming-environment-data<span class="Special"> &lt;- </span><span class="Constant">next-ingredient</span>
  click-row:number<span class="Special"> &lt;- </span><span class="Constant">next-ingredient</span>
  <span class="Comment"># assert click-row &gt;= sandbox.starting-row-on-screen</span>
  sandbox:address:address:sandbox-data<span class="Special"> &lt;- </span>get-address *env, <span class="Constant">sandbox:offset</span>
  start:number<span class="Special"> &lt;- </span>get **sandbox, <span class="Constant">starting-row-on-screen:offset</span>
  clicked-on-sandboxes?:boolean<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="Delimiter">{</span>
    next-sandbox:address:sandbox-data<span class="Special"> &lt;- </span>get **sandbox, <span class="Constant">next-sandbox:offset</span>
    <span class="muControl">break-unless</span> next-sandbox
    <span class="Comment"># if click-row &lt; sandbox.next-sandbox.starting-row-on-screen, break</span>
    next-start:number<span class="Special"> &lt;- </span>get *next-sandbox, <span class="Constant">starting-row-on-screen:offset</span>
    found?:boolean<span class="Special"> &lt;- </span>lesser-than click-row, next-start
    <span class="muControl">break-if</span> found?
    sandbox<span class="Special"> &lt;- </span>get-address **sandbox, <span class="Constant">next-sandbox:offset</span>
    <span class="muControl">loop</span>
  <span class="Delimiter">}</span>
  <span class="Comment"># snip sandbox out of its list</span>
  result:address:sandbox-data<span class="Special"> &lt;- </span>copy *sandbox
  *sandbox<span class="Special"> &lt;- </span>copy next-sandbox
  <span class="Comment"># position cursor in sandbox editor</span>
  sandbox-in-focus?:address:boolean<span class="Special"> &lt;- </span>get-address *env, <span class="Constant">sandbox-in-focus?:offset</span>
  *sandbox-in-focus?<span class="Special"> &lt;- </span>copy <span class="Constant">1/true</span>
  <span class="muControl">reply</span> result
]

<span class="muScenario">scenario</span> sandbox-with-print-can-be-edited [
  $close-trace  <span class="Comment"># trace too long</span>
  assume-screen <span class="Constant">100/width</span>, <span class="Constant">20/height</span>
  <span class="Comment"># left editor is empty</span>
  <span class="Constant">1</span>:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[]</span>
  <span class="Comment"># right editor contains an instruction</span>
  <span class="Constant">2</span>:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[print-integer screen:address, 4]</span>
  <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> &lt;- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character
  <span class="Comment"># run the sandbox</span>
  assume-console [
    press F4
  ]
  run [
    event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data
  ]
  screen-should-contain [
   <span class="Constant"> .                                                                                 run (F4)           .</span>
   <span class="Constant"> .                                                  ┊                                                 .</span>
<span class="Constant">    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span>
   <span class="Constant"> .                                                  ┊                                                x.</span>
   <span class="Constant"> .                                                  ┊print-integer screen:address, 4                  .</span>
   <span class="Constant"> .                                                  ┊screen:                                          .</span>
   <span class="Constant"> .                                                  ┊  .4                             .               .</span>
   <span class="Constant"> .                                                  ┊  .                              .               .</span>
   <span class="Constant"> .                                                  ┊  .                              .               .</span>
   <span class="Constant"> .                                                  ┊  .                              .               .</span>
   <span class="Constant"> .                                                  ┊  .                              .               .</span>
   <span class="Constant"> .                                                  ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span>
   <span class="Constant"> .                                                  ┊                                                 .</span>
  ]
  <span class="Comment"># edit the sandbox</span>
  assume-console [
    left-click <span class="Constant">3</span>, <span class="Constant">70</span>
  ]
  run [
    event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data
  ]
  screen-should-contain [
   <span class="Constant"> .                                                                                 run (F4)           .</span>
   <span class="Constant"> .                                                  ┊print-integer screen:address, 4                  .</span>
<span class="Constant">    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span>
   <span class="Constant"> .                                                  ┊                                                 .</span>
   <span class="Constant"> .                                                  ┊                                                 .</span>
  ]
]
</pre>
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