Mercurial Repositories > eric / file comparison
comparison: eric7/WebBrowser/Tools/DelayedFileWatcher.py
eric7/WebBrowser/Tools/DelayedFileWatcher.py
- branch
- eric7
- changeset 8312
- 800c432b34c8
- parent 8218
- 7c09585bd960
- child 8318
- 962bce857696
equal
deleted
inserted
replaced
| 8311:4e8b98454baa | 8312:800c432b34c8 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2016 - 2021 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing a file system watcher with a delay. | |
| 8 """ | |
| 9 | |
| 10 from PyQt5.QtCore import pyqtSignal, pyqtSlot, QFileSystemWatcher, QTimer | |
| 11 | |
| 12 | |
| 13 class DelayedFileWatcher(QFileSystemWatcher): | |
| 14 """ | |
| 15 Class implementing a file system watcher with a delay. | |
| 16 | |
| 17 @signal delayedDirectoryChanged(path) emitted to indicate a changed | |
| 18 directory | |
| 19 @signal delayedFileChanged(path) emitted to indicate a changed file | |
| 20 """ | |
| 21 delayedDirectoryChanged = pyqtSignal(str) | |
| 22 delayedFileChanged = pyqtSignal(str) | |
| 23 | |
| 24 def __init__(self, paths=None, parent=None): | |
| 25 """ | |
| 26 Constructor | |
| 27 | |
| 28 @param paths list of paths to be watched | |
| 29 @type list of str | |
| 30 @param parent reference to the parent object | |
| 31 @type QObject | |
| 32 """ | |
| 33 if paths: | |
| 34 super().__init__(paths, parent) | |
| 35 else: | |
| 36 super().__init__(parent) | |
| 37 | |
| 38 self.__dirQueue = [] | |
| 39 self.__fileQueue = [] | |
| 40 | |
| 41 self.directoryChanged.connect(self.__directoryChanged) | |
| 42 self.fileChanged.connect(self.__fileChanged) | |
| 43 | |
| 44 @pyqtSlot(str) | |
| 45 def __directoryChanged(self, path): | |
| 46 """ | |
| 47 Private slot handling a changed directory. | |
| 48 | |
| 49 @param path name of the changed directory | |
| 50 @type str | |
| 51 """ | |
| 52 self.__dirQueue.append(path) | |
| 53 QTimer.singleShot(500, self.__dequeueDirectory) | |
| 54 | |
| 55 @pyqtSlot(str) | |
| 56 def __fileChanged(self, path): | |
| 57 """ | |
| 58 Private slot handling a changed file. | |
| 59 | |
| 60 @param path name of the changed file | |
| 61 @type str | |
| 62 """ | |
| 63 self.__fileQueue.append(path) | |
| 64 QTimer.singleShot(500, self.__dequeueFile) | |
| 65 | |
| 66 @pyqtSlot() | |
| 67 def __dequeueDirectory(self): | |
| 68 """ | |
| 69 Private slot to signal a directory change. | |
| 70 """ | |
| 71 self.delayedDirectoryChanged.emit(self.__dirQueue.pop(0)) | |
| 72 | |
| 73 @pyqtSlot() | |
| 74 def __dequeueFile(self): | |
| 75 """ | |
| 76 Private slot to signal a file change. | |
| 77 """ | |
| 78 self.delayedFileChanged.emit(self.__fileQueue.pop(0)) |
