83 lines
2.9 KiB
Python
83 lines
2.9 KiB
Python
"""
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降级拖拽检测器
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当平台特定检测器不可用时的降级方案。
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"""
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import os
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import time
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import threading
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from typing import List
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from .base_detector import BaseDragDetector
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class FallbackDragDetector(BaseDragDetector):
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"""降级拖拽检测器"""
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def __init__(self, supported_formats: List[str] = None):
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"""
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初始化降级检测器
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Args:
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supported_formats: 支持的文件格式列表
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"""
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super().__init__(supported_formats)
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self._watch_directory = os.path.expanduser("~/Desktop") # 监控桌面
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self._known_files = set()
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self._scan_interval = 0.5 # 扫描间隔（秒）
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# 初始化已知文件列表
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self._scan_known_files()
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def _scan_known_files(self):
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"""扫描已知文件"""
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self._known_files.clear()
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if os.path.exists(self._watch_directory):
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for filename in os.listdir(self._watch_directory):
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if self._is_supported_format(filename):
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filepath = os.path.join(self._watch_directory, filename)
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self._known_files.add(filepath)
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def _monitor_loop(self):
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"""监控循环 - 通过文件系统变化检测"""
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while self.is_running:
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try:
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if os.path.exists(self._watch_directory):
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current_files = set()
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for filename in os.listdir(self._watch_directory):
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if self._is_supported_format(filename):
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filepath = os.path.join(self._watch_directory, filename)
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current_files.add(filepath)
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# 检测新文件
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new_files = current_files - self._known_files
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for filepath in new_files:
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# 检查文件是否最近创建（1秒内）
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try:
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file_time = os.path.getmtime(filepath)
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if time.time() - file_time < 1.0:
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self.add_dropped_file(filepath)
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except OSError:
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pass
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self._known_files = current_files
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except Exception as e:
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print(f"降级检测器错误: {e}")
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time.sleep(self._scan_interval)
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def is_supported(self) -> bool:
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"""降级检测器总是支持"""
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return True
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def set_watch_directory(self, directory: str):
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"""
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设置监控目录
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Args:
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directory: 要监控的目录路径
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"""
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if os.path.exists(directory):
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self._watch_directory = directory
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self._scan_known_files() |