Throttle requests using a static "typing paused period"
Tyler Goodlet
parent
ef1b0911f3
commit
25d7122cb6
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@ -19,7 +19,6 @@ qompleterz: embeddable search and complete using trio, Qt and fuzzywuzzy.
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"""
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import sys
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import time
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from typing import (
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List, Optional, Callable,
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Awaitable, Sequence, Dict,
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@ -298,50 +297,86 @@ class FontSizedQLineEdit(QtWidgets.QLineEdit):
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self.view.hide()
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_ongoing_search: trio.CancelScope = None
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_search_active: trio.Event = trio.Event()
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_search_enabled: bool = False
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async def fill_results(
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search: FontSizedQLineEdit,
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symsearch: Callable[..., Awaitable],
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recv_chan: trio.abc.ReceiveChannel,
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# pattern: str,
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pause_time: float = 0.25,
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) -> None:
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"""Task to search through providers and fill in possible
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completion results.
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"""
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global _ongoing_search, _search_enabled
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global _search_active, _search_enabled
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view = search.view
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sel = search.view.selectionModel()
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model = search.view.model()
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async for pattern in recv_chan:
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last_search_text = ''
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last_text = search.text()
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repeats = 0
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if not _search_enabled:
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log.debug(f'Ignoring search for {pattern}')
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while True:
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last_text = search.text()
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await _search_active.wait()
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with trio.move_on_after(pause_time) as cs:
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# cs.shield = True
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pattern = await recv_chan.receive()
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print(pattern)
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# during fast multiple key inputs, wait until a pause
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# (in typing) to initiate search
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if not cs.cancelled_caught:
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log.debug(f'Ignoring fast input for {pattern}')
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continue
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with trio.CancelScope() as cs:
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_ongoing_search = cs
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results = await symsearch(pattern)
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_ongoing_search = None
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text = search.text()
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print(f'search: {text}')
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if results and not cs.cancelled_caught:
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if not text:
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print('idling')
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_search_active = trio.Event()
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continue
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if text == last_text:
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repeats += 1
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if repeats > 1:
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_search_active = trio.Event()
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repeats = 0
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if not _search_enabled:
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print('search not ENABLED?')
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continue
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if last_search_text and last_search_text == text:
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continue
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log.debug(f'Search req for {text}')
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last_search_text = text
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results = await symsearch(text)
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log.debug(f'Received search result {results}')
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if results and _search_enabled:
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# TODO: indented branch results for each provider
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view.set_results(results)
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# [item['altname'] for item in
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# results['kraken'].values()]
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# )
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# XXX: these 2 lines MUST be in sequence in order
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# to get the view to show right after typing input.
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sel.setCurrentIndex(
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model.index(0, 0, QModelIndex()),
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QItemSelectionModel.ClearAndSelect | # type: ignore[arg-type]
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QItemSelectionModel.ClearAndSelect |
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QItemSelectionModel.Rows
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)
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search.show()
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@ -354,7 +389,7 @@ async def handle_keyboard_input(
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) -> None:
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global _ongoing_search, _search_enabled
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global _search_active, _search_enabled
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# startup
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view = search.view
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@ -375,13 +410,7 @@ async def handle_keyboard_input(
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recv,
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)
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last_time = time.time()
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async for key, mods, txt in recv_chan:
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# TODO: move this logic into completer task
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now = time.time()
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period = now - last_time
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last_time = now
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log.debug(f'key: {key}, mods: {mods}, txt: {txt}')
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nidx = cidx = view.currentIndex()
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@ -392,10 +421,6 @@ async def handle_keyboard_input(
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if key in (Qt.Key_Enter, Qt.Key_Return):
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if _ongoing_search is not None:
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_ongoing_search.cancel()
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_search_enabled = False
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node = model.item(nidx.row(), 2)
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if node:
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value = node.text()
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@ -411,6 +436,7 @@ async def handle_keyboard_input(
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'info',
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)
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_search_enabled = False
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# release kb control of search bar
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search.unfocus()
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continue
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@ -422,7 +448,6 @@ async def handle_keyboard_input(
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# we're in select mode or cancelling
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if ctrl:
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# cancel and close
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if key == Qt.Key_C:
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search.unfocus()
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@ -435,6 +460,7 @@ async def handle_keyboard_input(
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# result selection nav
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if key in (Qt.Key_K, Qt.Key_J):
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_search_enabled = False
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if key == Qt.Key_K:
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nidx = view.indexAbove(cidx)
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@ -456,10 +482,10 @@ async def handle_keyboard_input(
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# to figure out the desired field(s)
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value = model.item(nidx.row(), 2).text()
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else:
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if period >= 0.1:
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_search_enabled = True
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# relay to completer task
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send.send_nowait(search.text())
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# relay to completer task
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_search_enabled = True
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send.send_nowait(search.text())
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_search_active.set()
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if __name__ == '__main__':
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