Mercurial Repositories > eric / file comparison
comparison: WebBrowser/Tools/DelayedFileWatcher.py
WebBrowser/Tools/DelayedFileWatcher.py
- branch
- QtWebEngine
- changeset 4766
- 5f8d08aa2217
- parent 4763
- 8ad353f31184
- child 5389
- 9b1c800daff3
equal
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| 4763:8ad353f31184 | 4766:5f8d08aa2217 |
|---|---|
| 1 # -*- coding: utf-8 -*- | 1 # -*- coding: utf-8 -*- |
| 2 | 2 |
| 3 # Copyright (c) 2016 Detlev Offenbach <detlev@die-offenbachs.de> | 3 # Copyright (c) 2016 Detlev Offenbach <detlev@die-offenbachs.de> |
| 4 # | 4 # |
| 5 | 5 |
| 6 """ | |
| 7 Module implementing a file system watcher with a delay. | |
| 8 """ | |
| 9 | |
| 6 from __future__ import unicode_literals | 10 from __future__ import unicode_literals |
| 7 | 11 |
| 8 ##class DelayedFileWatcher : public QFileSystemWatcher | 12 from PyQt5.QtCore import pyqtSignal, pyqtSlot, QFileSystemWatcher, QTimer |
| 9 ##{ | 13 |
| 10 ## Q_OBJECT | 14 |
| 11 ## | 15 class DelayedFileWatcher(QFileSystemWatcher): |
| 12 ##public: | 16 """ |
| 13 ## explicit DelayedFileWatcher(QObject* parent = 0); | 17 Class implementing a file system watcher with a delay. |
| 14 ## explicit DelayedFileWatcher(const QStringList &paths, QObject* parent = 0); | 18 |
| 15 ## | 19 @signal delayedDirectoryChanged(path) emitted to indicate a changed |
| 16 ##signals: | 20 directory |
| 17 ## void delayedDirectoryChanged(const QString &path); | 21 @signal delayedFileChanged(path) emitted to indicate a changed file |
| 18 ## void delayedFileChanged(const QString &path); | 22 """ |
| 19 ## | 23 delayedDirectoryChanged = pyqtSignal(str) |
| 20 ##private slots: | 24 delayedFileChanged = pyqtSignal(str) |
| 21 ## void slotDirectoryChanged(const QString &path); | 25 |
| 22 ## void slotFileChanged(const QString &path); | 26 def __init__(self, paths=None, parent=None): |
| 23 ## | 27 """ |
| 24 ## void dequeueDirectory(); | 28 Constructor |
| 25 ## void dequeueFile(); | 29 |
| 26 ## | 30 @param paths list of paths to be watched |
| 27 ##private: | 31 @type list of str |
| 28 ## void init(); | 32 @param parent reference to the parent object |
| 29 ## | 33 @type QObject |
| 30 ## QQueue<QString> m_dirQueue; | 34 """ |
| 31 ## QQueue<QString> m_fileQueue; | 35 if paths: |
| 32 ##}; | 36 super(DelayedFileWatcher, self).__init__(paths, parent) |
| 33 ## | 37 else: |
| 34 ## | 38 super(DelayedFileWatcher, self).__init__(parent) |
| 35 ##DelayedFileWatcher::DelayedFileWatcher(QObject* parent) | 39 |
| 36 ## : QFileSystemWatcher(parent) | 40 self.__dirQueue = [] |
| 37 ##{ | 41 self.__fileQueue = [] |
| 38 ## init(); | 42 |
| 39 ##} | 43 self.directoryChanged.connect(self.__directoryChanged) |
| 40 ## | 44 self.fileChanged.connect(self.__fileChanged) |
| 41 ##DelayedFileWatcher::DelayedFileWatcher(const QStringList &paths, QObject* parent) | 45 |
| 42 ## : QFileSystemWatcher(paths, parent) | 46 @pyqtSlot(str) |
| 43 ##{ | 47 def __directoryChanged(self, path): |
| 44 ## init(); | 48 """ |
| 45 ##} | 49 Private slot handling a changed directory. |
| 46 ## | 50 |
| 47 ##void DelayedFileWatcher::init() | 51 @param path name of the changed directory |
| 48 ##{ | 52 @type str |
| 49 ## connect(this, SIGNAL(directoryChanged(QString)), this, SLOT(slotDirectoryChanged(QString))); | 53 """ |
| 50 ## connect(this, SIGNAL(fileChanged(QString)), this, SLOT(slotFileChanged(QString))); | 54 self.__dirQueue.append(path) |
| 51 ##} | 55 QTimer.singleShot(500, self.__dequeueDirectory) |
| 52 ## | 56 |
| 53 ##void DelayedFileWatcher::slotDirectoryChanged(const QString &path) | 57 @pyqtSlot(str) |
| 54 ##{ | 58 def __fileChanged(self, path): |
| 55 ## m_dirQueue.enqueue(path); | 59 """ |
| 56 ## QTimer::singleShot(500, this, SLOT(dequeueDirectory())); | 60 Private slot handling a changed file. |
| 57 ##} | 61 |
| 58 ## | 62 @param path name of the changed file |
| 59 ##void DelayedFileWatcher::slotFileChanged(const QString &path) | 63 @type str |
| 60 ##{ | 64 """ |
| 61 ## m_fileQueue.enqueue(path); | 65 self.__fileQueue.append(path) |
| 62 ## QTimer::singleShot(500, this, SLOT(dequeueFile())); | 66 QTimer.singleShot(500, self.__dequeueFile) |
| 63 ##} | 67 |
| 64 ## | 68 @pyqtSlot() |
| 65 ##void DelayedFileWatcher::dequeueDirectory() | 69 def __dequeueDirectory(self): |
| 66 ##{ | 70 """ |
| 67 ## emit delayedDirectoryChanged(m_dirQueue.dequeue()); | 71 Private slot to signal a directory change. |
| 68 ##} | 72 """ |
| 69 ## | 73 self.delayedDirectoryChanged.emit(self.__dirQueue.pop(0)) |
| 70 ##void DelayedFileWatcher::dequeueFile() | 74 |
| 71 ##{ | 75 @pyqtSlot() |
| 72 ## emit delayedFileChanged(m_fileQueue.dequeue()); | 76 def __dequeueFile(self): |
| 73 ##} | 77 """ |
| 78 Private slot to signal a file change. | |
| 79 """ | |
| 80 self.delayedFileChanged.emit(self.__fileQueue.pop(0)) |
