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## editing sandboxes after they've been created

scenario clicking-on-a-sandbox-moves-it-to-editor [
  local-scope
  trace-until 100/app  # trace too long
  assume-screen 100/width, 10/height
  # basic recipe
  recipes:text <- new [ 
recipe foo [
  reply 4
]]
  env:&:environment <- new-programming-environment screen, recipes, [foo]
  # run it
  assume-console [
    press F4
  ]
  event-loop screen, console, env
  screen-should-contain [
    .                                                                                 run (F4)           .
    .                                                                                                   .
    .recipe foo [                                      ┊─────────────────────────────────────────────────.
    .  reply 4                                         0   edit          copy            delete         .
    .]                                                 foo                                              .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊4                                                .
    .                                                  ┊─────────────────────────────────────────────────.
    .                                                                                                   .
  ]
  # click at left edge of 'edit' button
  assume-console [
    left-click 3, 55
  ]
  run [
    event-loop screen, console, env
  ]
  # it pops back into editor
  screen-should-contain [
    .                                                                                 run (F4)           .
    .                                                  foo                                              .
    .recipe foo [                                      ┊─────────────────────────────────────────────────.
    .  reply 4                                                                                          .
    .]                                                                                                  .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊                                                 .
    .                                                                                                   .
  ]
  # cursor should be in the right place
  assume-console [
    type [0]
  ]
  run [
    event-loop screen, console, env
  ]
  screen-should-contain [
    .                                                                                 run (F4)           .
    .                                                  0foo                                             .
    .recipe foo [                                      ┊─────────────────────────────────────────────────.
    .  reply 4                                                                                          .
    .]                                                                                                  .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊                                                 .
    .                                                                                                   .
  ]
]

scenario clicking-on-a-sandbox-moves-it-to-editor-2 [
  local-scope
  trace-until 100/app  # trace too long
  assume-screen 100/width, 10/height
  # basic recipe
  recipes:text <- new [ 
recipe foo [
  reply 4
]]
  env:&:environment <- new-programming-environment screen, recipes, [foo]
  # run it
  assume-console [
    press F4
  ]
  event-loop screen, console, env
  screen-should-contain [
    .                                                                                 run (F4)           .
    .                                                                                                   .
    .recipe foo [                                      ┊─────────────────────────────────────────────────.
    .  reply 4                                         0   edit          copy            delete         .
    .]                                                 foo                                              .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊4                                                .
    .                                                  ┊─────────────────────────────────────────────────.
    .                                                                                                   .
  ]
  # click at right edge of 'edit' button (just before 'copy')
  assume-console [
    left-click 3, 68
  ]
  run [
    event-loop screen, console, env
  ]
  # it pops back into editor
  screen-should-contain [
    .                                                                                 run (F4)           .
    .                                                  foo                                              .
    .recipe foo [                                      ┊─────────────────────────────────────────────────.
    .  reply 4                                                                                          .
    .]                                                                                                  .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊                                                 .
    .                                                                                                   .
  ]
  # cursor should be in the right place
  assume-console [
    type [0]
  ]
  run [
    event-loop screen, console, env
  ]
  screen-should-contain [
    .                                                                                 run (F4)           .
    .                                                  0foo                                             .
    .recipe foo [                                      ┊─────────────────────────────────────────────────.
    .  reply 4                                                                                          .
    .]                                                                                                  .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊                                                 .
    .                                                                                                   .
  ]
]

after <global-touch> [
  # support 'edit' button
  {
    edit?:bool <- should-attempt-edit? click-row, click-column, env
    break-unless edit?
    edit?, env <- try-edit-sandbox click-row, env
    break-unless edit?
    hide-screen screen
    screen <- render-sandbox-side screen, env, render
    screen <- update-cursor screen, recipes, current-sandbox, sandbox-in-focus?, env
    show-screen screen
    loop +next-event
  }
]

# some preconditions for attempting to edit a sandbox
def should-attempt-edit? click-row:num, click-column:num, env:&:environment -> result:bool [
  local-scope
  load-ingredients
  # are we below the sandbox editor?
  click-sandbox-area?:bool <- click-on-sandbox-area? click-row, click-column, env
  return-unless click-sandbox-area?, 0/false
  # narrower, is the click in the columns spanning the 'edit' button?
  first-sandbox:&:editor <- get *env, current-sandbox:offset
  assert first-sandbox, [!!]
  sandbox-left-margin:num <- get *first-sandbox, left:offset
  sandbox-right-margin:num <- get *first-sandbox, right:offset
  edit-button-left:num, edit-button-right:num, _ <- sandbox-menu-columns sandbox-left-margin, sandbox-right-margin
  edit-button-vertical-area?:bool <- within-range? click-column, edit-button-left, edit-button-right
  return-unless edit-button-vertical-area?, 0/false
  # finally, is sandbox editor empty?
  current-sandbox:&:editor <- get *env, current-sandbox:offset
  result <- empty-editor? current-sandbox
]

def try-edit-sandbox click-row:num, env:&:environment -> clicked-on-edit-button?:bool, env:&:environment [
  local-scope
  load-ingredients
  # identify the sandbox to edit, if the click was actually on the 'edit' button
  sandbox:&:sandbox <- find-sandbox env, click-row
  return-unless sandbox, 0/false
  clicked-on-edit-button? <- copy 1/true
  # 'edit' button = 'copy' button + 'delete' button
  text:text <- get *sandbox, data:offset
  current-sandbox:&:editor <- get *env, current-sandbox:offset
  current-sandbox <- insert-text current-sandbox, text
  env <- delete-sandbox env, sandbox
  # reset scroll
  *env <- put *env, render-from:offset, -1
  # position cursor in sandbox editor
  *env <- put *env, sandbox-in-focus?:offset, 1/true
]

scenario sandbox-with-print-can-be-edited [
  local-scope
  trace-until 100/app  # trace too long
  assume-screen 100/width, 20/height
  # left editor is empty
  # right editor contains an instruction
  env:&:environment <- new-programming-environment screen, [], [print-integer screen, 4]
  # run the sandbox
  assume-console [
    press F4
  ]
  event-loop screen, console, env
  screen-should-contain [
    .                                                                                 run (F4)           .
    .                                                                                                   .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊─────────────────────────────────────────────────.
    .                                                  0   edit          copy            delete         .
    .                                                  print-integer screen, 4                          .
    .                                                  screen:                                          .
    .                                                    .4                             .               .
    .                                                    .                              .               .
    .                                                    .                              .               .
    .                                                    .                              .               .
    .                                                    .                              .               .
    .                                                  ┊─────────────────────────────────────────────────.
    .                                                                                                   .
  ]
  # edit the sandbox
  assume-console [
    left-click 3, 65
  ]
  run [
    event-loop screen, console, env
  ]
  screen-should-contain [
    .                                                                                 run (F4)           .
    .                                                  print-integer screen, 4                          .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊─────────────────────────────────────────────────.
    .                                                                                                   .
    .                                                                                                   .
  ]
]

scenario editing-sandbox-after-scrolling-resets-scroll [
  local-scope
  trace-until 100/app  # trace too long
  assume-screen 100/width, 10/height
  # initialize environment
  env:&:environment <- new-programming-environment screen, [], []
  render-all screen, env, render
  # create 2 sandboxes and scroll to second
  assume-console [
    press ctrl-n
    type [add 2, 2]
    press F4
    type [add 1, 1]
    press F4
    press page-down
    press page-down
  ]
  event-loop screen, console, env
  screen-should-contain [
    .                                                                                 run (F4)           .
    .                                                  ┊─────────────────────────────────────────────────.
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊1   edit          copy            delete         .
    .                                                  add 2, 2                                         .
    .                                                  4                                                .
    .                                                  ┊─────────────────────────────────────────────────.
    .                                                                                                   .
  ]
  # edit the second sandbox
  assume-console [
    left-click 2, 55
  ]
  run [
    event-loop screen, console, env
  ]
  # second sandbox shows in editor; scroll resets to display first sandbox
  screen-should-contain [
    .                                                                                 run (F4)           .
    .                                                  add 2, 2                                         .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊─────────────────────────────────────────────────.
    .                                                  0   edit          copy            delete         .
    .                                                  add 1, 1                                         .
    .                                                  2                                                .
    .                                                  ┊─────────────────────────────────────────────────.
    .                                                                                                   .
  ]
]

scenario editing-sandbox-updates-sandbox-count [
  local-scope
  trace-until 100/app  # trace too long
  assume-screen 100/width, 10/height
  # initialize environment
  env:&:environment <- new-programming-environment screen, [], []
  render-all screen, env, render
  # create 2 sandboxes
  assume-console [
    press ctrl-n
    type [add 2, 2]
    press F4
    type [add 1, 1]
    press F4
  ]
  event-loop screen, console, env
  screen-should-contain [
    .                                                                                 run (F4)           .
    .                                                                                                   .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊─────────────────────────────────────────────────.
    .                                                  0   edit          copy            delete         .
    .                                                  add 1, 1                                         .
    .                                                  2                                                .
    .                                                  ┊─────────────────────────────────────────────────.
    .                                                  1   edit          copy            delete         .
    .                                                  add 2, 2                                         .
    .                                                  4                                                .
  ]
  # edit the second sandbox, then resave
  assume-console [
    left-click 3, 60
    press F4
  ]
  run [
    event-loop screen, console, env
  ]
  # no change in contents
  screen-should-contain [
    .                                                                                 run (F4)           .
    .                                                                                                   .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊─────────────────────────────────────────────────.
    .                                                  0   edit          copy            delete         .
    .                                                  add 1, 1                                         .
    .                                                  2                                                .
    .                                                  ┊─────────────────────────────────────────────────.
    .                                                  1   edit          copy            delete         .
    .                                                  add 2, 2                                         .
    .                                                  4                                                .
  ]
  # now try to scroll past end
  assume-console [
    press page-down
    press page-down
    press page-down
  ]
  run [
    event-loop screen, console, env
  ]
  # screen should show just final sandbox with the right index (1)
  screen-should-contain [
    .                                                                                 run (F4)           .
    .                                                  ┊─────────────────────────────────────────────────.
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊1   edit          copy            delete         .
    .                                                  add 2, 2                                         .
    .                                                  4                                                .
    .                                                  ┊─────────────────────────────────────────────────.
    .                                                                                                   .
  ]
]