63 lines
2.4 KiB
Text
63 lines
2.4 KiB
Text
# life.ludic - on-mount and on-unmount: an element or component that appears in a frame it was not
|
|
# in last frame is mounted, and one that is gone is unmounted, each once, after the frame is drawn
|
|
# a build starts its own records: a screen built twice keeps only the last build's
|
|
function lc_begin(ui_st: mut UiState) -> void {
|
|
List.clear(ui_st.lc_keys)
|
|
List.clear(ui_st.lc_mounts)
|
|
List.clear(ui_st.lc_unmounts)
|
|
List.clear(ui_st.lc_envs)
|
|
}
|
|
function lc_note(ui_st: mut UiState, key: string, names: []string, acts: []UiAct, e: UiEnv) -> void {
|
|
var m: UiAct = null
|
|
var u: UiAct = null
|
|
for i in 0 .. len(names) {
|
|
if names[i] == "mount" { m = acts[i] }
|
|
if names[i] == "unmount" { u = acts[i] }
|
|
}
|
|
if m == null and u == null { return }
|
|
ui_kept(ui_st.lc_keys, key)
|
|
ui_kept(ui_st.lc_mounts, m)
|
|
ui_kept(ui_st.lc_unmounts, u)
|
|
ui_kept(ui_st.lc_envs, e)
|
|
}
|
|
function lc_mine(key: string, screen: string) -> bool {
|
|
let n = len(screen)
|
|
return key == screen or (len(key) > n and sat(key, 0, screen) and key[n] == 47)
|
|
}
|
|
# the screen's mounts and unmounts since its last frame; other screens' records are kept
|
|
function lc_run(ui_st: mut UiState, screen: string) -> void {
|
|
for i in 0 .. len(ui_st.lc_keys) {
|
|
if ui_st.lc_mounts[i] != null and not sel_has(ui_st.lc_prev_keys, ui_st.lc_keys[i]) { act_run(ui_st, ui_st.lc_mounts[i], ui_st.lc_envs[i]) }
|
|
}
|
|
let keys = ui_st.lc_sp_keys # the spare set, emptied: the records carried over
|
|
let unmounts = ui_st.lc_sp_unmounts
|
|
let envs = ui_st.lc_sp_envs
|
|
List.clear(keys)
|
|
List.clear(unmounts)
|
|
List.clear(envs)
|
|
for i in 0 .. len(ui_st.lc_prev_keys) {
|
|
let k = ui_st.lc_prev_keys[i]
|
|
if lc_mine(k, screen) {
|
|
if ui_st.lc_prev_unmounts[i] != null and not sel_has(ui_st.lc_keys, k) { act_run(ui_st, ui_st.lc_prev_unmounts[i], ui_st.lc_prev_envs[i]) }
|
|
} else {
|
|
ui_kept(keys, k)
|
|
ui_kept(unmounts, ui_st.lc_prev_unmounts[i])
|
|
ui_kept(envs, ui_st.lc_prev_envs[i])
|
|
}
|
|
}
|
|
for i in 0 .. len(ui_st.lc_keys) {
|
|
ui_kept(keys, ui_st.lc_keys[i])
|
|
ui_kept(unmounts, ui_st.lc_unmounts[i])
|
|
ui_kept(envs, ui_st.lc_envs[i])
|
|
}
|
|
ui_st.lc_sp_keys = ui_st.lc_prev_keys
|
|
ui_st.lc_sp_unmounts = ui_st.lc_prev_unmounts
|
|
ui_st.lc_sp_envs = ui_st.lc_prev_envs
|
|
ui_st.lc_prev_keys = keys
|
|
ui_st.lc_prev_unmounts = unmounts
|
|
ui_st.lc_prev_envs = envs
|
|
List.clear(ui_st.lc_keys)
|
|
List.clear(ui_st.lc_mounts)
|
|
List.clear(ui_st.lc_unmounts)
|
|
List.clear(ui_st.lc_envs)
|
|
}
|