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qt4reactor.py
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qt4reactor.py
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<div class="highlight"><pre><div class='line' id='LC1'><span class="c"># Copyright (c) 2001-2008 Twisted Matrix Laboratories.</span></div><div class='line' id='LC2'><span class="c"># See LICENSE for details.</span></div><div class='line' id='LC3'><br/></div><div class='line' id='LC4'><br/></div><div class='line' id='LC5'><span class="sd">"""</span></div><div class='line' id='LC6'><span class="sd">This module provides support for Twisted to be driven by the Qt mainloop.</span></div><div class='line' id='LC7'><br/></div><div class='line' id='LC8'><span class="sd">In order to use this support, simply do the following::</span></div><div class='line' id='LC9'><span class="sd"> | app = QApplication(sys.argv) # your code to init Qt</span></div><div class='line' id='LC10'><span class="sd"> | import qt4reactor</span></div><div class='line' id='LC11'><span class="sd"> | qt4reactor.install()</span></div><div class='line' id='LC12'><span class="sd"> </span></div><div class='line' id='LC13'><span class="sd">alternatively:</span></div><div class='line' id='LC14'><br/></div><div class='line' id='LC15'><span class="sd"> | from twisted.application import reactors</span></div><div class='line' id='LC16'><span class="sd"> | reactors.installReactor('qt4')</span></div><div class='line' id='LC17'><br/></div><div class='line' id='LC18'><span class="sd">Then use twisted.internet APIs as usual. The other methods here are not</span></div><div class='line' id='LC19'><span class="sd">intended to be called directly.</span></div><div class='line' id='LC20'><br/></div><div class='line' id='LC21'><span class="sd">If you don't instantiate a QApplication or QCoreApplication prior to</span></div><div class='line' id='LC22'><span class="sd">installing the reactor, a QCoreApplication will be constructed</span></div><div class='line' id='LC23'><span class="sd">by the reactor. QCoreApplication does not require a GUI so trial testing</span></div><div class='line' id='LC24'><span class="sd">can occur normally.</span></div><div class='line' id='LC25'><br/></div><div class='line' id='LC26'><span class="sd">Twisted can be initialized after QApplication.exec_() with a call to</span></div><div class='line' id='LC27'><span class="sd">reactor.runReturn(). calling reactor.stop() will unhook twisted but</span></div><div class='line' id='LC28'><span class="sd">leave your Qt application running</span></div><div class='line' id='LC29'><br/></div><div class='line' id='LC30'><span class="sd">API Stability: stable</span></div><div class='line' id='LC31'><br/></div><div class='line' id='LC32'><span class="sd">Maintainer: U{Glenn H Tarbox, PhD<mailto:glenn@tarbox.org>}</span></div><div class='line' id='LC33'><br/></div><div class='line' id='LC34'><span class="sd">Previous maintainer: U{Itamar Shtull-Trauring<mailto:twisted@itamarst.org>}</span></div><div class='line' id='LC35'><span class="sd">Original port to QT4: U{Gabe Rudy<mailto:rudy@goldenhelix.com>}</span></div><div class='line' id='LC36'><span class="sd">Subsequent port by therve</span></div><div class='line' id='LC37'><span class="sd">"""</span></div><div class='line' id='LC38'><br/></div><div class='line' id='LC39'><span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span><span class="s">'install'</span><span class="p">]</span></div><div class='line' id='LC40'><br/></div><div class='line' id='LC41'><br/></div><div class='line' id='LC42'><span class="kn">import</span> <span class="nn">sys</span><span class="o">,</span> <span class="nn">time</span></div><div class='line' id='LC43'><br/></div><div class='line' id='LC44'><span class="kn">from</span> <span class="nn">zope.interface</span> <span class="kn">import</span> <span class="n">implements</span></div><div class='line' id='LC45'><br/></div><div class='line' id='LC46'><span class="kn">from</span> <span class="nn">PyQt4.QtCore</span> <span class="kn">import</span> <span class="n">QSocketNotifier</span><span class="p">,</span> <span class="n">QObject</span><span class="p">,</span> <span class="n">SIGNAL</span><span class="p">,</span> <span class="n">QTimer</span><span class="p">,</span> <span class="n">QCoreApplication</span></div><div class='line' id='LC47'><span class="kn">from</span> <span class="nn">PyQt4.QtCore</span> <span class="kn">import</span> <span class="n">QEventLoop</span></div><div class='line' id='LC48'><br/></div><div class='line' id='LC49'><span class="kn">from</span> <span class="nn">twisted.internet.interfaces</span> <span class="kn">import</span> <span class="n">IReactorFDSet</span></div><div class='line' id='LC50'><span class="kn">from</span> <span class="nn">twisted.python</span> <span class="kn">import</span> <span class="n">log</span></div><div class='line' id='LC51'><span class="kn">from</span> <span class="nn">twisted.internet.posixbase</span> <span class="kn">import</span> <span class="n">PosixReactorBase</span></div><div class='line' id='LC52'><br/></div><div class='line' id='LC53'><span class="k">class</span> <span class="nc">TwistedSocketNotifier</span><span class="p">(</span><span class="n">QSocketNotifier</span><span class="p">):</span></div><div class='line' id='LC54'> <span class="sd">"""</span></div><div class='line' id='LC55'><span class="sd"> Connection between an fd event and reader/writer callbacks.</span></div><div class='line' id='LC56'><span class="sd"> """</span></div><div class='line' id='LC57'><br/></div><div class='line' id='LC58'> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">reactor</span><span class="p">,</span> <span class="n">watcher</span><span class="p">,</span> <span class="nb">type</span><span class="p">):</span></div><div class='line' id='LC59'> <span class="n">QSocketNotifier</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">watcher</span><span class="o">.</span><span class="n">fileno</span><span class="p">(),</span> <span class="nb">type</span><span class="p">)</span></div><div class='line' id='LC60'> <span class="bp">self</span><span class="o">.</span><span class="n">reactor</span> <span class="o">=</span> <span class="n">reactor</span></div><div class='line' id='LC61'> <span class="bp">self</span><span class="o">.</span><span class="n">watcher</span> <span class="o">=</span> <span class="n">watcher</span></div><div class='line' id='LC62'> <span class="bp">self</span><span class="o">.</span><span class="n">fn</span> <span class="o">=</span> <span class="bp">None</span></div><div class='line' id='LC63'> <span class="k">if</span> <span class="nb">type</span> <span class="o">==</span> <span class="n">QSocketNotifier</span><span class="o">.</span><span class="n">Read</span><span class="p">:</span></div><div class='line' id='LC64'> <span class="bp">self</span><span class="o">.</span><span class="n">fn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">read</span></div><div class='line' id='LC65'> <span class="k">elif</span> <span class="nb">type</span> <span class="o">==</span> <span class="n">QSocketNotifier</span><span class="o">.</span><span class="n">Write</span><span class="p">:</span></div><div class='line' id='LC66'> <span class="bp">self</span><span class="o">.</span><span class="n">fn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">write</span></div><div class='line' id='LC67'> <span class="n">QObject</span><span class="o">.</span><span class="n">connect</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">SIGNAL</span><span class="p">(</span><span class="s">"activated(int)"</span><span class="p">),</span> <span class="bp">self</span><span class="o">.</span><span class="n">fn</span><span class="p">)</span></div><div class='line' id='LC68'><br/></div><div class='line' id='LC69'><br/></div><div class='line' id='LC70'> <span class="k">def</span> <span class="nf">shutdown</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></div><div class='line' id='LC71'> <span class="n">QObject</span><span class="o">.</span><span class="n">disconnect</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">SIGNAL</span><span class="p">(</span><span class="s">"activated(int)"</span><span class="p">),</span> <span class="bp">self</span><span class="o">.</span><span class="n">fn</span><span class="p">)</span></div><div class='line' id='LC72'> <span class="bp">self</span><span class="o">.</span><span class="n">setEnabled</span><span class="p">(</span><span class="bp">False</span><span class="p">)</span></div><div class='line' id='LC73'> <span class="bp">self</span><span class="o">.</span><span class="n">fn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">watcher</span> <span class="o">=</span> <span class="bp">None</span></div><div class='line' id='LC74'> <span class="bp">self</span><span class="o">.</span><span class="n">deleteLater</span><span class="p">()</span></div><div class='line' id='LC75'><br/></div><div class='line' id='LC76'><br/></div><div class='line' id='LC77'> <span class="k">def</span> <span class="nf">read</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sock</span><span class="p">):</span></div><div class='line' id='LC78'> <span class="n">w</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">watcher</span></div><div class='line' id='LC79'> <span class="c">#self.setEnabled(False) # ??? do I need this? </span></div><div class='line' id='LC80'> <span class="k">def</span> <span class="nf">_read</span><span class="p">():</span></div><div class='line' id='LC81'> <span class="n">why</span> <span class="o">=</span> <span class="bp">None</span></div><div class='line' id='LC82'> <span class="k">try</span><span class="p">:</span></div><div class='line' id='LC83'> <span class="n">why</span> <span class="o">=</span> <span class="n">w</span><span class="o">.</span><span class="n">doRead</span><span class="p">()</span></div><div class='line' id='LC84'> <span class="k">except</span><span class="p">:</span></div><div class='line' id='LC85'> <span class="n">log</span><span class="o">.</span><span class="n">err</span><span class="p">()</span></div><div class='line' id='LC86'> <span class="n">why</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">exc_info</span><span class="p">()[</span><span class="mi">1</span><span class="p">]</span></div><div class='line' id='LC87'> <span class="k">if</span> <span class="n">why</span><span class="p">:</span></div><div class='line' id='LC88'> <span class="bp">self</span><span class="o">.</span><span class="n">reactor</span><span class="o">.</span><span class="n">_disconnectSelectable</span><span class="p">(</span><span class="n">w</span><span class="p">,</span> <span class="n">why</span><span class="p">,</span> <span class="bp">True</span><span class="p">)</span></div><div class='line' id='LC89'> <span class="k">elif</span> <span class="bp">self</span><span class="o">.</span><span class="n">watcher</span><span class="p">:</span></div><div class='line' id='LC90'> <span class="k">pass</span></div><div class='line' id='LC91'> <span class="c">#self.setEnabled(True)</span></div><div class='line' id='LC92'> <span class="n">log</span><span class="o">.</span><span class="n">callWithLogger</span><span class="p">(</span><span class="n">w</span><span class="p">,</span> <span class="n">_read</span><span class="p">)</span></div><div class='line' id='LC93'> <span class="bp">self</span><span class="o">.</span><span class="n">reactor</span><span class="o">.</span><span class="n">reactorInvocation</span><span class="p">()</span></div><div class='line' id='LC94'><br/></div><div class='line' id='LC95'> <span class="k">def</span> <span class="nf">write</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sock</span><span class="p">):</span></div><div class='line' id='LC96'> <span class="n">w</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">watcher</span></div><div class='line' id='LC97'> <span class="bp">self</span><span class="o">.</span><span class="n">setEnabled</span><span class="p">(</span><span class="bp">False</span><span class="p">)</span></div><div class='line' id='LC98'> <span class="k">def</span> <span class="nf">_write</span><span class="p">():</span></div><div class='line' id='LC99'> <span class="n">why</span> <span class="o">=</span> <span class="bp">None</span></div><div class='line' id='LC100'> <span class="k">try</span><span class="p">:</span></div><div class='line' id='LC101'> <span class="n">why</span> <span class="o">=</span> <span class="n">w</span><span class="o">.</span><span class="n">doWrite</span><span class="p">()</span></div><div class='line' id='LC102'> <span class="k">except</span><span class="p">:</span></div><div class='line' id='LC103'> <span class="n">log</span><span class="o">.</span><span class="n">err</span><span class="p">()</span></div><div class='line' id='LC104'> <span class="n">why</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">exc_info</span><span class="p">()[</span><span class="mi">1</span><span class="p">]</span></div><div class='line' id='LC105'> <span class="k">if</span> <span class="n">why</span><span class="p">:</span></div><div class='line' id='LC106'> <span class="bp">self</span><span class="o">.</span><span class="n">reactor</span><span class="o">.</span><span class="n">_disconnectSelectable</span><span class="p">(</span><span class="n">w</span><span class="p">,</span> <span class="n">why</span><span class="p">,</span> <span class="bp">False</span><span class="p">)</span></div><div class='line' id='LC107'> <span class="k">elif</span> <span class="bp">self</span><span class="o">.</span><span class="n">watcher</span><span class="p">:</span></div><div class='line' id='LC108'> <span class="bp">self</span><span class="o">.</span><span class="n">setEnabled</span><span class="p">(</span><span class="bp">True</span><span class="p">)</span></div><div class='line' id='LC109'> <span class="n">log</span><span class="o">.</span><span class="n">callWithLogger</span><span class="p">(</span><span class="n">w</span><span class="p">,</span> <span class="n">_write</span><span class="p">)</span></div><div class='line' id='LC110'> <span class="bp">self</span><span class="o">.</span><span class="n">reactor</span><span class="o">.</span><span class="n">reactorInvocation</span><span class="p">()</span></div><div class='line' id='LC111'><br/></div><div class='line' id='LC112'><span class="k">class</span> <span class="nc">fakeApplication</span><span class="p">(</span><span class="n">QEventLoop</span><span class="p">):</span></div><div class='line' id='LC113'> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></div><div class='line' id='LC114'> <span class="n">QEventLoop</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span></div><div class='line' id='LC115'> </div><div class='line' id='LC116'> <span class="k">def</span> <span class="nf">exec_</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></div><div class='line' id='LC117'> <span class="n">QEventLoop</span><span class="o">.</span><span class="n">exec_</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span></div><div class='line' id='LC118'> </div><div class='line' id='LC119'><span class="k">class</span> <span class="nc">QTReactor</span><span class="p">(</span><span class="n">PosixReactorBase</span><span class="p">):</span></div><div class='line' id='LC120'> <span class="sd">"""</span></div><div class='line' id='LC121'><span class="sd"> Qt based reactor.</span></div><div class='line' id='LC122'><span class="sd"> """</span></div><div class='line' id='LC123'> <span class="n">implements</span><span class="p">(</span><span class="n">IReactorFDSet</span><span class="p">)</span></div><div class='line' id='LC124'><br/></div><div class='line' id='LC125'> <span class="n">_timer</span> <span class="o">=</span> <span class="bp">None</span></div><div class='line' id='LC126'><br/></div><div class='line' id='LC127'> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></div><div class='line' id='LC128'> <span class="bp">self</span><span class="o">.</span><span class="n">_reads</span> <span class="o">=</span> <span class="p">{}</span></div><div class='line' id='LC129'> <span class="bp">self</span><span class="o">.</span><span class="n">_writes</span> <span class="o">=</span> <span class="p">{}</span></div><div class='line' id='LC130'> <span class="bp">self</span><span class="o">.</span><span class="n">_timer</span><span class="o">=</span><span class="n">QTimer</span><span class="p">()</span></div><div class='line' id='LC131'> <span class="bp">self</span><span class="o">.</span><span class="n">_timer</span><span class="o">.</span><span class="n">setSingleShot</span><span class="p">(</span><span class="bp">True</span><span class="p">)</span></div><div class='line' id='LC132'> <span class="k">if</span> <span class="n">QCoreApplication</span><span class="o">.</span><span class="n">startingUp</span><span class="p">():</span></div><div class='line' id='LC133'> <span class="bp">self</span><span class="o">.</span><span class="n">qApp</span><span class="o">=</span><span class="n">QCoreApplication</span><span class="p">([])</span></div><div class='line' id='LC134'> <span class="bp">self</span><span class="o">.</span><span class="n">_ownApp</span><span class="o">=</span><span class="bp">True</span></div><div class='line' id='LC135'> <span class="k">else</span><span class="p">:</span></div><div class='line' id='LC136'> <span class="bp">self</span><span class="o">.</span><span class="n">qApp</span> <span class="o">=</span> <span class="n">QCoreApplication</span><span class="o">.</span><span class="n">instance</span><span class="p">()</span></div><div class='line' id='LC137'> <span class="bp">self</span><span class="o">.</span><span class="n">_ownApp</span><span class="o">=</span><span class="bp">False</span></div><div class='line' id='LC138'> <span class="bp">self</span><span class="o">.</span><span class="n">_blockApp</span> <span class="o">=</span> <span class="bp">None</span></div><div class='line' id='LC139'> <span class="bp">self</span><span class="o">.</span><span class="n">_readWriteQ</span><span class="o">=</span><span class="p">[]</span></div><div class='line' id='LC140'> </div><div class='line' id='LC141'> <span class="sd">""" some debugging instrumentation """</span></div><div class='line' id='LC142'> <span class="bp">self</span><span class="o">.</span><span class="n">_doSomethingCount</span><span class="o">=</span><span class="mi">0</span></div><div class='line' id='LC143'> </div><div class='line' id='LC144'> <span class="n">PosixReactorBase</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span></div><div class='line' id='LC145'><br/></div><div class='line' id='LC146'> <span class="k">def</span> <span class="nf">addReader</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">reader</span><span class="p">):</span></div><div class='line' id='LC147'> <span class="k">if</span> <span class="ow">not</span> <span class="n">reader</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_reads</span><span class="p">:</span></div><div class='line' id='LC148'> <span class="bp">self</span><span class="o">.</span><span class="n">_reads</span><span class="p">[</span><span class="n">reader</span><span class="p">]</span> <span class="o">=</span> <span class="n">TwistedSocketNotifier</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">reader</span><span class="p">,</span></div><div class='line' id='LC149'> <span class="n">QSocketNotifier</span><span class="o">.</span><span class="n">Read</span><span class="p">)</span></div><div class='line' id='LC150'><br/></div><div class='line' id='LC151'><br/></div><div class='line' id='LC152'> <span class="k">def</span> <span class="nf">addWriter</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">writer</span><span class="p">):</span></div><div class='line' id='LC153'> <span class="k">if</span> <span class="ow">not</span> <span class="n">writer</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_writes</span><span class="p">:</span></div><div class='line' id='LC154'> <span class="bp">self</span><span class="o">.</span><span class="n">_writes</span><span class="p">[</span><span class="n">writer</span><span class="p">]</span> <span class="o">=</span> <span class="n">TwistedSocketNotifier</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">writer</span><span class="p">,</span></div><div class='line' id='LC155'> <span class="n">QSocketNotifier</span><span class="o">.</span><span class="n">Write</span><span class="p">)</span></div><div class='line' id='LC156'><br/></div><div class='line' id='LC157'><br/></div><div class='line' id='LC158'> <span class="k">def</span> <span class="nf">removeReader</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">reader</span><span class="p">):</span></div><div class='line' id='LC159'> <span class="k">if</span> <span class="n">reader</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_reads</span><span class="p">:</span></div><div class='line' id='LC160'> <span class="c">#self._reads[reader].shutdown()</span></div><div class='line' id='LC161'> <span class="c">#del self._reads[reader]</span></div><div class='line' id='LC162'> <span class="bp">self</span><span class="o">.</span><span class="n">_reads</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span><span class="o">.</span><span class="n">shutdown</span><span class="p">()</span></div><div class='line' id='LC163'><br/></div><div class='line' id='LC164'> <span class="k">def</span> <span class="nf">removeWriter</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">writer</span><span class="p">):</span></div><div class='line' id='LC165'> <span class="k">if</span> <span class="n">writer</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_writes</span><span class="p">:</span></div><div class='line' id='LC166'> <span class="bp">self</span><span class="o">.</span><span class="n">_writes</span><span class="p">[</span><span class="n">writer</span><span class="p">]</span><span class="o">.</span><span class="n">shutdown</span><span class="p">()</span></div><div class='line' id='LC167'> <span class="c">#del self._writes[writer]</span></div><div class='line' id='LC168'> <span class="bp">self</span><span class="o">.</span><span class="n">_writes</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">writer</span><span class="p">)</span></div><div class='line' id='LC169'><br/></div><div class='line' id='LC170'><br/></div><div class='line' id='LC171'> <span class="k">def</span> <span class="nf">removeAll</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></div><div class='line' id='LC172'> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_removeAll</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_reads</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_writes</span><span class="p">)</span></div><div class='line' id='LC173'><br/></div><div class='line' id='LC174'><br/></div><div class='line' id='LC175'> <span class="k">def</span> <span class="nf">getReaders</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></div><div class='line' id='LC176'> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_reads</span><span class="o">.</span><span class="n">keys</span><span class="p">()</span></div><div class='line' id='LC177'><br/></div><div class='line' id='LC178'><br/></div><div class='line' id='LC179'> <span class="k">def</span> <span class="nf">getWriters</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></div><div class='line' id='LC180'> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_writes</span><span class="o">.</span><span class="n">keys</span><span class="p">()</span></div><div class='line' id='LC181'> </div><div class='line' id='LC182'> <span class="k">def</span> <span class="nf">callLater</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span><span class="n">howlong</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kargs</span><span class="p">):</span></div><div class='line' id='LC183'> <span class="n">rval</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">QTReactor</span><span class="p">,</span><span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">callLater</span><span class="p">(</span><span class="n">howlong</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kargs</span><span class="p">)</span></div><div class='line' id='LC184'> <span class="bp">self</span><span class="o">.</span><span class="n">reactorInvocation</span><span class="p">()</span></div><div class='line' id='LC185'> <span class="k">return</span> <span class="n">rval</span></div><div class='line' id='LC186'> </div><div class='line' id='LC187'> <span class="k">def</span> <span class="nf">crash</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></div><div class='line' id='LC188'> <span class="nb">super</span><span class="p">(</span><span class="n">QTReactor</span><span class="p">,</span><span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">crash</span><span class="p">()</span></div><div class='line' id='LC189'> </div><div class='line' id='LC190'> <span class="k">def</span> <span class="nf">iterate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span><span class="n">delay</span><span class="o">=</span><span class="mf">0.0</span><span class="p">):</span></div><div class='line' id='LC191'> <span class="n">t</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">running</span> <span class="c"># not sure I entirely get the state of running</span></div><div class='line' id='LC192'> <span class="bp">self</span><span class="o">.</span><span class="n">running</span><span class="o">=</span><span class="bp">True</span></div><div class='line' id='LC193'> <span class="bp">self</span><span class="o">.</span><span class="n">_timer</span><span class="o">.</span><span class="n">stop</span><span class="p">()</span> <span class="c"># in case its not (rare?)</span></div><div class='line' id='LC194'> <span class="k">try</span><span class="p">:</span></div><div class='line' id='LC195'> <span class="k">if</span> <span class="n">delay</span> <span class="o">==</span> <span class="mf">0.0</span><span class="p">:</span></div><div class='line' id='LC196'> <span class="bp">self</span><span class="o">.</span><span class="n">reactorInvokePrivate</span><span class="p">()</span></div><div class='line' id='LC197'> <span class="bp">self</span><span class="o">.</span><span class="n">_timer</span><span class="o">.</span><span class="n">stop</span><span class="p">()</span> <span class="c"># supports multiple invocations</span></div><div class='line' id='LC198'> <span class="k">else</span><span class="p">:</span></div><div class='line' id='LC199'> <span class="n">endTime</span> <span class="o">=</span> <span class="n">delay</span> <span class="o">+</span> <span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">()</span></div><div class='line' id='LC200'> <span class="bp">self</span><span class="o">.</span><span class="n">reactorInvokePrivate</span><span class="p">()</span></div><div class='line' id='LC201'> <span class="k">while</span> <span class="bp">True</span><span class="p">:</span></div><div class='line' id='LC202'> <span class="n">t</span> <span class="o">=</span> <span class="n">endTime</span> <span class="o">-</span> <span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">()</span></div><div class='line' id='LC203'> <span class="k">if</span> <span class="n">t</span> <span class="o"><=</span> <span class="mf">0.0</span><span class="p">:</span> <span class="k">return</span></div><div class='line' id='LC204'> <span class="bp">self</span><span class="o">.</span><span class="n">qApp</span><span class="o">.</span><span class="n">processEvents</span><span class="p">(</span><span class="n">QEventLoop</span><span class="o">.</span><span class="n">AllEvents</span> <span class="o">|</span> </div><div class='line' id='LC205'> <span class="n">QEventLoop</span><span class="o">.</span><span class="n">WaitForMoreEvents</span><span class="p">,</span><span class="n">t</span><span class="o">*</span><span class="mi">1010</span><span class="p">)</span></div><div class='line' id='LC206'> <span class="k">finally</span><span class="p">:</span></div><div class='line' id='LC207'> <span class="bp">self</span><span class="o">.</span><span class="n">running</span><span class="o">=</span><span class="n">t</span></div><div class='line' id='LC208'> </div><div class='line' id='LC209'> <span class="k">def</span> <span class="nf">addReadWrite</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span><span class="n">t</span><span class="p">):</span></div><div class='line' id='LC210'> <span class="bp">self</span><span class="o">.</span><span class="n">_readWriteQ</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">t</span><span class="p">)</span></div><div class='line' id='LC211'> </div><div class='line' id='LC212'> <span class="k">def</span> <span class="nf">runReturn</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">installSignalHandlers</span><span class="o">=</span><span class="bp">True</span><span class="p">):</span></div><div class='line' id='LC213'> <span class="n">QObject</span><span class="o">.</span><span class="n">connect</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_timer</span><span class="p">,</span> <span class="n">SIGNAL</span><span class="p">(</span><span class="s">"timeout()"</span><span class="p">),</span> </div><div class='line' id='LC214'> <span class="bp">self</span><span class="o">.</span><span class="n">reactorInvokePrivate</span><span class="p">)</span></div><div class='line' id='LC215'> <span class="bp">self</span><span class="o">.</span><span class="n">startRunning</span><span class="p">(</span><span class="n">installSignalHandlers</span><span class="o">=</span><span class="n">installSignalHandlers</span><span class="p">)</span></div><div class='line' id='LC216'> <span class="bp">self</span><span class="o">.</span><span class="n">_timer</span><span class="o">.</span><span class="n">start</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span></div><div class='line' id='LC217'> </div><div class='line' id='LC218'> <span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">installSignalHandlers</span><span class="o">=</span><span class="bp">True</span><span class="p">):</span></div><div class='line' id='LC219'> <span class="k">try</span><span class="p">:</span></div><div class='line' id='LC220'> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_ownApp</span><span class="p">:</span></div><div class='line' id='LC221'> <span class="bp">self</span><span class="o">.</span><span class="n">_blockApp</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">qApp</span></div><div class='line' id='LC222'> <span class="k">else</span><span class="p">:</span></div><div class='line' id='LC223'> <span class="bp">self</span><span class="o">.</span><span class="n">_blockApp</span> <span class="o">=</span> <span class="n">fakeApplication</span><span class="p">()</span></div><div class='line' id='LC224'> <span class="bp">self</span><span class="o">.</span><span class="n">runReturn</span><span class="p">(</span><span class="n">installSignalHandlers</span><span class="p">)</span></div><div class='line' id='LC225'> <span class="bp">self</span><span class="o">.</span><span class="n">_blockApp</span><span class="o">.</span><span class="n">exec_</span><span class="p">()</span></div><div class='line' id='LC226'> <span class="k">finally</span><span class="p">:</span></div><div class='line' id='LC227'> <span class="bp">self</span><span class="o">.</span><span class="n">_timer</span><span class="o">.</span><span class="n">stop</span><span class="p">()</span> <span class="c"># should already be stopped</span></div><div class='line' id='LC228'><br/></div><div class='line' id='LC229'> <span class="k">def</span> <span class="nf">reactorInvocation</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></div><div class='line' id='LC230'> <span class="bp">self</span><span class="o">.</span><span class="n">_timer</span><span class="o">.</span><span class="n">setInterval</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span></div><div class='line' id='LC231'> </div><div class='line' id='LC232'> <span class="k">def</span> <span class="nf">reactorInvokePrivate</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></div><div class='line' id='LC233'> <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">running</span><span class="p">:</span></div><div class='line' id='LC234'> <span class="bp">self</span><span class="o">.</span><span class="n">_blockApp</span><span class="o">.</span><span class="n">quit</span><span class="p">()</span></div><div class='line' id='LC235'> <span class="bp">self</span><span class="o">.</span><span class="n">_doSomethingCount</span> <span class="o">+=</span> <span class="mi">1</span></div><div class='line' id='LC236'> <span class="bp">self</span><span class="o">.</span><span class="n">runUntilCurrent</span><span class="p">()</span></div><div class='line' id='LC237'> <span class="n">t</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">timeout</span><span class="p">()</span></div><div class='line' id='LC238'> <span class="k">if</span> <span class="n">t</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span> <span class="n">t</span><span class="o">=</span><span class="mf">0.1</span></div><div class='line' id='LC239'> <span class="k">else</span><span class="p">:</span> <span class="n">t</span> <span class="o">=</span> <span class="nb">min</span><span class="p">(</span><span class="n">t</span><span class="p">,</span><span class="mf">0.1</span><span class="p">)</span></div><div class='line' id='LC240'> <span class="bp">self</span><span class="o">.</span><span class="n">_timer</span><span class="o">.</span><span class="n">setInterval</span><span class="p">(</span><span class="n">t</span><span class="o">*</span><span class="mi">1010</span><span class="p">)</span></div><div class='line' id='LC241'> <span class="bp">self</span><span class="o">.</span><span class="n">qApp</span><span class="o">.</span><span class="n">processEvents</span><span class="p">()</span> <span class="c"># could change interval</span></div><div class='line' id='LC242'> <span class="bp">self</span><span class="o">.</span><span class="n">_timer</span><span class="o">.</span><span class="n">start</span><span class="p">()</span></div><div class='line' id='LC243'> </div><div class='line' id='LC244'> <span class="k">def</span> <span class="nf">doIteration</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></div><div class='line' id='LC245'> <span class="k">assert</span> <span class="bp">False</span><span class="p">,</span> <span class="s">"doiteration is invalid call"</span></div><div class='line' id='LC246'> </div><div class='line' id='LC247'><span class="k">def</span> <span class="nf">install</span><span class="p">():</span></div><div class='line' id='LC248'> <span class="sd">"""</span></div><div class='line' id='LC249'><span class="sd"> Configure the twisted mainloop to be run inside the qt mainloop.</span></div><div class='line' id='LC250'><span class="sd"> """</span></div><div class='line' id='LC251'> <span class="kn">from</span> <span class="nn">twisted.internet</span> <span class="kn">import</span> <span class="n">main</span></div><div class='line' id='LC252'> <span class="n">reactor</span> <span class="o">=</span> <span class="n">QTReactor</span><span class="p">()</span></div><div class='line' id='LC253'> <span class="n">main</span><span class="o">.</span><span class="n">installReactor</span><span class="p">(</span><span class="n">reactor</span><span class="p">)</span></div></pre></div>
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<dl class="keyboard-mappings">
<dt><span class="badmono">↑</span> <em>or</em> k</dt>
<dd>Scroll up</dd>
</dl>
<dl class="keyboard-mappings">
<dt><span class="badmono">↓</span> <em>or</em> j</dt>
<dd>Scroll down</dd>
</dl>
<dl class="keyboard-mappings">
<dt>t</dt>
<dd>Toggle visibility of head labels</dd>
</dl>
</div><!-- /.column.first -->
<div class="column last">
<dl class="keyboard-mappings">
<dt>shift <span class="badmono">←</span> <em>or</em> shift h</dt>
<dd>Scroll all the way left</dd>
</dl>
<dl class="keyboard-mappings">
<dt>shift <span class="badmono">→</span> <em>or</em> shift l</dt>
<dd>Scroll all the way right</dd>
</dl>
<dl class="keyboard-mappings">
<dt>shift <span class="badmono">↑</span> <em>or</em> shift k</dt>
<dd>Scroll all the way up</dd>
</dl>
<dl class="keyboard-mappings">
<dt>shift <span class="badmono">↓</span> <em>or</em> shift j</dt>
<dd>Scroll all the way down</dd>
</dl>
</div><!-- /.column.last -->
</div>
</div>
<div class="js-hidden-pane" >
<div class="rule"></div>
<div class="columns threecols">
<div class="column first js-hidden-pane" >
<h3>Source Code Browsing</h3>
<dl class="keyboard-mappings">
<dt>t</dt>
<dd>Activates the file finder</dd>
</dl>
<dl class="keyboard-mappings">
<dt>l</dt>
<dd>Jump to line</dd>
</dl>
<dl class="keyboard-mappings">
<dt>w</dt>
<dd>Switch branch/tag</dd>
</dl>
<dl class="keyboard-mappings">
<dt>y</dt>
<dd>Expand URL to its canonical form</dd>
</dl>
</div>
</div>
</div>
<div class="js-hidden-pane" style='display:none'>
<div class="rule"></div>
<div class="columns threecols">
<div class="column first">
<h3>Browsing Commits</h3>
<dl class="keyboard-mappings">
<dt><span class="platform-mac">⌘</span><span class="platform-other">ctrl</span> <em>+</em> enter</dt>
<dd>Submit comment</dd>
</dl>
<dl class="keyboard-mappings">
<dt>escape</dt>
<dd>Close form</dd>
</dl>
<dl class="keyboard-mappings">
<dt>p</dt>
<dd>Parent commit</dd>
</dl>
<dl class="keyboard-mappings">
<dt>o</dt>
<dd>Other parent commit</dd>
</dl>
</div>
</div>
</div>
<div class="js-hidden-pane" style='display:none'>
<div class="rule"></div>
<h3>Notifications</h3>
<div class="columns threecols">
<div class="column first">
<dl class="keyboard-mappings">
<dt>j</dt>
<dd>Move selection down</dd>
</dl>