diff options
| -rw-r--r-- | browse-slack/environment.mu | 74 |
1 files changed, 59 insertions, 15 deletions
diff --git a/browse-slack/environment.mu b/browse-slack/environment.mu index 6a05afaf..a0d9f88e 100644 --- a/browse-slack/environment.mu +++ b/browse-slack/environment.mu @@ -1,5 +1,11 @@ type environment { - item-index: int + tabs: (handle array tab) + current-tab-index: int # index into tabs +} + +type tab { + item-index: int # what item in the corresponding list we start rendering + # the current page at } # static buffer sizes in this file: @@ -20,9 +26,14 @@ fn initialize-environment _self: (addr environment), _items: (addr item-list) { var self/esi: (addr environment) <- copy _self var items/eax: (addr item-list) <- copy _items var items-data-first-free-a/eax: (addr int) <- get items, data-first-free - var final-item/eax: int <- copy *items-data-first-free-a + var final-item/edx: int <- copy *items-data-first-free-a final-item <- decrement - var dest/edi: (addr int) <- get self, item-index + var tabs-ah/ecx: (addr handle array tab) <- get self, tabs + populate tabs-ah, 0x10 + # current-tab-index implicitly set to 0 + var tabs/eax: (addr array tab) <- lookup *tabs-ah + var first-tab/eax: (addr tab) <- index tabs, 0/current-tab-index + var dest/edi: (addr int) <- get first-tab, item-index copy-to *dest, final-item } @@ -72,7 +83,14 @@ fn render-item-list screen: (addr screen), _env: (addr environment), _items: (ad # var y/ecx: int <- copy 2/search-space-ver y <- add 1/item-padding-ver - var newest-item/eax: (addr int) <- get env, item-index + var tabs-ah/eax: (addr handle array tab) <- get env, tabs + var _tabs/eax: (addr array tab) <- lookup *tabs-ah + var tabs/edx: (addr array tab) <- copy _tabs + var current-tab-index-a/eax: (addr int) <- get env, current-tab-index + var current-tab-index/eax: int <- copy *current-tab-index-a + var current-tab-offset/eax: (offset tab) <- compute-offset tabs, current-tab-index + var current-tab/edx: (addr tab) <- index tabs, current-tab-offset + var newest-item/eax: (addr int) <- get current-tab, item-index var i/ebx: int <- copy *newest-item var items/esi: (addr item-list) <- copy _items var items-data-ah/eax: (addr handle array item) <- get items, data @@ -427,7 +445,14 @@ fn update-environment env: (addr environment), key: byte, items: (addr item-list fn next-item _env: (addr environment), _items: (addr item-list) { var env/edi: (addr environment) <- copy _env - var dest/eax: (addr int) <- get env, item-index + var tabs-ah/eax: (addr handle array tab) <- get env, tabs + var _tabs/eax: (addr array tab) <- lookup *tabs-ah + var tabs/edx: (addr array tab) <- copy _tabs + var current-tab-index-a/eax: (addr int) <- get env, current-tab-index + var current-tab-index/eax: int <- copy *current-tab-index-a + var current-tab-offset/eax: (offset tab) <- compute-offset tabs, current-tab-index + var current-tab/edx: (addr tab) <- index tabs, current-tab-offset + var dest/eax: (addr int) <- get current-tab, item-index compare *dest, 0 break-if-<= decrement *dest @@ -439,7 +464,14 @@ fn previous-item _env: (addr environment), _items: (addr item-list) { var items-data-first-free-a/ecx: (addr int) <- get items, data-first-free var final-item-index/ecx: int <- copy *items-data-first-free-a final-item-index <- decrement - var dest/eax: (addr int) <- get env, item-index + var tabs-ah/eax: (addr handle array tab) <- get env, tabs + var _tabs/eax: (addr array tab) <- lookup *tabs-ah + var tabs/edx: (addr array tab) <- copy _tabs + var current-tab-index-a/eax: (addr int) <- get env, current-tab-index + var current-tab-index/eax: int <- copy *current-tab-index-a + var current-tab-offset/eax: (offset tab) <- compute-offset tabs, current-tab-index + var current-tab/edx: (addr tab) <- index tabs, current-tab-offset + var dest/eax: (addr int) <- get current-tab, item-index compare *dest, final-item-index break-if->= increment *dest @@ -451,8 +483,15 @@ fn page-down _env: (addr environment), _items: (addr item-list) { var items-data-ah/eax: (addr handle array item) <- get items, data var _items-data/eax: (addr array item) <- lookup *items-data-ah var items-data/ebx: (addr array item) <- copy _items-data - var src/eax: (addr int) <- get env, item-index - var new-item-index/ecx: int <- copy *src + var tabs-ah/eax: (addr handle array tab) <- get env, tabs + var _tabs/eax: (addr array tab) <- lookup *tabs-ah + var tabs/ecx: (addr array tab) <- copy _tabs + var current-tab-index-a/eax: (addr int) <- get env, current-tab-index + var current-tab-index/eax: int <- copy *current-tab-index-a + var current-tab-offset/eax: (offset tab) <- compute-offset tabs, current-tab-index + var current-tab/eax: (addr tab) <- index tabs, current-tab-offset + var current-tab-item-index-addr/edi: (addr int) <- get current-tab, item-index + var new-item-index/ecx: int <- copy *current-tab-item-index-addr var y/edx: int <- copy 2 { compare new-item-index, 0 @@ -471,20 +510,19 @@ fn page-down _env: (addr environment), _items: (addr item-list) { loop } new-item-index <- increment - var dest/eax: (addr int) <- get env, item-index { # HACK: make sure we make forward progress even if a single post takes up # the whole screen. # We can't see the rest of that single post at the moment. But at least we # can go past it. - compare new-item-index, *dest + compare new-item-index, *current-tab-item-index-addr break-if-!= # Don't make "forward progress" past post 0. compare new-item-index, 0 break-if-= new-item-index <- decrement } - copy-to *dest, new-item-index + copy-to *current-tab-item-index-addr, new-item-index } fn page-up _env: (addr environment), _items: (addr item-list) { @@ -496,8 +534,15 @@ fn page-up _env: (addr environment), _items: (addr item-list) { var items-data-first-free-a/eax: (addr int) <- get items, data-first-free var final-item-index/esi: int <- copy *items-data-first-free-a final-item-index <- decrement - var src/eax: (addr int) <- get env, item-index - var new-item-index/ecx: int <- copy *src + var tabs-ah/eax: (addr handle array tab) <- get env, tabs + var _tabs/eax: (addr array tab) <- lookup *tabs-ah + var tabs/ecx: (addr array tab) <- copy _tabs + var current-tab-index-a/eax: (addr int) <- get env, current-tab-index + var current-tab-index/eax: int <- copy *current-tab-index-a + var current-tab-offset/eax: (offset tab) <- compute-offset tabs, current-tab-index + var current-tab/eax: (addr tab) <- index tabs, current-tab-offset + var current-tab-item-index-addr/edi: (addr int) <- get current-tab, item-index + var new-item-index/ecx: int <- copy *current-tab-item-index-addr var y/edx: int <- copy 2 { compare new-item-index, final-item-index @@ -516,8 +561,7 @@ fn page-up _env: (addr environment), _items: (addr item-list) { loop } new-item-index <- decrement - var dest/eax: (addr int) <- get env, item-index - copy-to *dest, new-item-index + copy-to *current-tab-item-index-addr, new-item-index } # keep sync'd with render-item |