def __init__(self, parent=None):
"""Creates a new instance of MainWindow.
@param parent Qt parent.
"""
super(MainWindow, self).__init__(parent)
self.setupUi(self)
self._backend = Backend()
self._setupforumstable()
self._setupthreadstable()
self._setuppoststabwidget()
self._setuparchivetab()
self._openthreads = {}
self._masterobserver = BackendObserver(self._backend, self)
self._resumeobservedthreads()
self.buttonManualArchive.clicked.connect(self._archivethreadmanually)
class MainWindow(QMainWindow, Ui_ui_4ca):
"""Main Window implementation."""
def __init__(self, parent=None):
"""Creates a new instance of MainWindow.
@param parent Qt parent.
"""
super(MainWindow, self).__init__(parent)
self.setupUi(self)
self._backend = Backend()
self._setupforumstable()
self._setupthreadstable()
self._setuppoststabwidget()
self._setuparchivetab()
self._openthreads = {}
self._masterobserver = BackendObserver(self._backend, self)
self._resumeobservedthreads()
self.buttonManualArchive.clicked.connect(self._archivethreadmanually)
def _setuparchivetab(self):
self._setupfilterwidgets()
self._setuparchivedthreadstable()
self._setuparchivedpoststable()
self.buttonShowThreads.clicked.connect(self._showarchivedthreads)
def _setupfilterwidgets(self):
self.widgetDateTo.hide()
self.frameCategoryFilter.hide()
self.frameForumFilter.hide()
self.frameDateFilter.hide()
self.frameTagFilter.hide()
self.checkCategoryFilter.stateChanged.connect(
self._categoryfilterstatechanged)
self.checkForumFilter.stateChanged.connect(
self._forumfilterstatechanged)
self.checkDateFilter.stateChanged.connect(
self._datefiltervisibilitystatechanged)
self.checkTagFilter.stateChanged.connect(
self._tagfilterstatechanged)
self.radioDateOlder.clicked.connect(self._datefilterstatechanged)
self.radioDateNewer.clicked.connect(self._datefilterstatechanged)
self.radioDateBetween.clicked.connect(self._datefilterstatechanged)
self._populatecategorytreewidget()
self._populatetagswidget()
def _populatetagswidget(self):
"""Populates the QListWidget, that contains all available tags for tag
filtering.
"""
for tag in self._backend.tags():
item = QListWidgetItem(tag[1], self.listTags)
item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsSelectable)
item.setData(Qt.UserRole, tag[0])
def _datefilterstatechanged(self):
"""The check state of one of the three date selection radio buttons
has changed.
"""
if self.radioDateBetween.isChecked():
self.labelFrom.setText("From")
self.widgetDateTo.show()
else:
self.widgetDateTo.hide()
if self.radioDateOlder.isChecked():
self.labelFrom.setText("Older Than")
else:
self.labelFrom.setText("Newer Than")
def _populatecategorytreewidget(self):
"""Populates the QTreeWidget that shows the available categories for
thread filtering.
"""
self._backend.populatecategorytreewidget(self.treeCategory)
self.treeCategory.expandAll()
def _categoryfilterstatechanged(self, state):
if state == Qt.Checked:
self.frameCategoryFilter.show()
else:
self.frameCategoryFilter.hide()
def _forumfilterstatechanged(self, state):
if state == Qt.Checked:
self.frameForumFilter.show()
else:
self.frameForumFilter.hide()
def _datefiltervisibilitystatechanged(self, state):
if state == Qt.Checked:
self.frameDateFilter.show()
else:
self.frameDateFilter.hide()
def _tagfilterstatechanged(self, state):
if state == Qt.Checked:
self.frameTagFilter.show()
else:
self.frameTagFilter.hide()
def _setuparchivedpoststable(self):
self.tableArchivedPosts.doubleClicked.connect(self._showarchivedpost)
def _setuparchivedthreadstable(self):
self.tableArchivedThreads.clicked.connect(self._archivedthreadselected)
def _buildfilters(self):
"""Builds a list of lambda functions which serve as thread retrieval
filters based on what filters are set in the filter widgets.
"""
filters = []
filters.append((self._buildcategoryfilters()))
filters.append((self._buildforumfilters()))
filters.append((self._builddatefilter()))
filters.append((self._buildtagfilters()))
return filters
def _buildforumfilters(self):
"""Builds a list of lambda functions which will be used to filter
archived threads by forums.
"""
if self.checkForumFilter.checkState() == Qt.Checked:
rowid = -1
for row in self.tableForumFilter.selectedItems():
if not rowid == row.row():
yield (lambda x:
x.forum() == row.data(Qt.UserRole)[1])
rowid = row.row()
def _buildcategoryfilters(self):
"""Builds a list of lambda functions which will be used to filter
archived threads by categories.
"""
if self.checkCategoryFilter.checkState() == Qt.Checked:
for row in self.treeCategory.selectionModel().selectedRows():
cid, name, parent = row.data(Qt.UserRole)
yield (lambda x:
self._backend.categoryischildof(x.categoryid(), cid)
or x.categoryid() == cid)
def _buildtagfilters(self):
"""Builds a list of lambda functions which will be used to filter
archived threads by tags.
"""
if self.checkTagFilter.checkState() == Qt.Checked:
for row in self.listTags.selectedItems():
tid = row.data(Qt.UserRole)
yield (lambda x: tid in (y[0] for y in x.tags()))
def _builddatefilter(self):
"""Builds a lambda function which will be used to filter archived
threads by date.
"""
if self.checkDateFilter.checkState() == Qt.Checked:
fromdate = self.dateFrom.date().toPython()
if self.radioDateOlder.isChecked():
yield (lambda x: datefromstring(x.timestamp()) < fromdate)
elif self.radioDateNewer.isChecked():
yield (lambda x: datefromstring(x.timestamp()) > fromdate)
else:
todate = self.dateTo.date().toPython()
yield (lambda x: datefromstring(x.timestamp()) >= fromdate
and datefromstring(x.timestamp()) <= todate)
def _showarchivedthreads(self):
"""Shows all threads that match the current filters."""
self.tableArchivedThreads.setModel(
ThreadsArchiveTableModel(
self._backend, self._buildfilters(), self))
def _setupforumstable(self):
self.tableForums.cellClicked.connect(self._forumselected)
self._populateforums()
def _populateforums(self):
"""Populates the forums tables (live and archived filters)."""
self.tableForums.clear()
forums = FourChanForum.forums()
sortedforums = sorted(forums, key = lambda x: x)
tables = (self.tableForums, self.tableForumFilter)
for table in tables:
table.setRowCount(len(forums))
table.setColumnCount(2)
i = 0
for short in sortedforums:
data = forums[short]
i1 = QTableWidgetItem(short)
i2 = QTableWidgetItem(data[1])
i1.setData(Qt.UserRole, data)
i2.setData(Qt.UserRole, data)
table.setItem(i, 0, i1)
table.setItem(i, 1, i2)
i += 1
def _forumselected(self, row, column):
"""A cell has been clicked on."""
name = self.tableForums.item(row, 0).text()
self.setforum(name)
def _setupthreadstable(self):
self.tableThreads.setModel(ThreadsTableModel(self.tableThreads))
self.tableThreads.clicked.connect(self._threadselected)
self.buttonRefreshThreads.clicked.connect(self.refreshThreads)
def refreshThreads(self):
"""Refreshes the threads of the currently bound forum."""
m = self.tableThreads.model()
m.setforum(m.forum())
self.tableThreads.scrollToTop()
def setforum(self, name):
"""Sets the currently selected forum and updates the corresponding
table.
@param name Short forum name.
"""
self.tableThreads.model().setforum(name)
self.tableThreads.scrollToTop()
def _archivedthreadselected(self, index):
"""A cell in the archived threads table has been clicked on."""
thread = self.tableArchivedThreads.model().data(index, Qt.UserRole)
self.tableArchivedPosts.setModel(PostsTableModel(thread, self))
def _archivethreadmanually(self):
"""Shows a DialogObserveThread to manually archive a thread by pasting
its url.
"""
d = DialogObserveThread(self._backend)
doit = d.exec_() == QDialog.Accepted
if doit:
thread = FourChanThread(FourChanThreadUrl(d.url()))
observer = FourChanThreadObserver(thread, 30,
self._masterobserver)
self._masterobserver.addobserver(observer)
thread.refresh()
def _threadselected(self, index):
"""A cell in the threads table has been clicked on."""
thread = self.tableThreads.model().data(index, Qt.UserRole)
self._addtabondemand(thread)
def _setuppoststabwidget(self):
self.tabPosts.tabCloseRequested.connect(self._removethread)
def _removethread(self, idx):
"""Removes the given idx from the internal observed threads list."""
for k, v in self._openthreads.iteritems():
if v[0] == idx:
self._openthreads.pop(k)
self.tabPosts.removeTab(idx)
break
for k, v in self._openthreads.iteritems():
if v[0] > idx:
self._openthreads[k] = (v[0] - 1, v[1], v[2])
def _addtabondemand(self, thread):
"""Adds a new tab for the given thread, if it doesn't exist yet.
If it does, it will be made the current tab.
@param thread Instance of FourChanThreahHeader
"""
i = thread.id_()
if not i in self._openthreads.keys():
table = QTableView(self)
table.setModel(LiveFeedModel(self))
table.setAlternatingRowColors(True)
table.setEditTriggers(QAbstractItemView.NoEditTriggers)
table.setIconSize(QSize(192, 192))
table.horizontalHeader().setVisible(False)
table.horizontalHeader().setDefaultSectionSize(192)
table.horizontalHeader().setStretchLastSection(True)
table.verticalHeader().setVisible(False)
table.verticalHeader().setDefaultSectionSize(192)
table.doubleClicked.connect(self._showlivepost)
idx = self.tabPosts.addTab(table, "/%s/%s" % (thread.forum(), i))
self._openthreads[i] = (idx, thread, table)
fct = FourChanThread(
FourChanThreadUrl(thread.url()), self._masterobserver)
fct.postadded.connect(self._updatethread)
self._masterobserver.addobserver(
FourChanThreadObserver(fct, parent=self))
fct.refresh(True)
else:
idx = self._openthreads[i][0]
self.tabPosts.setCurrentIndex(idx)
def _showarchivedpost(self, index):
"""A post has been double-clicked on in the archived threads table.
Show it.
"""
table = self.tableArchivedPosts
post = table.model().data(index, Qt.UserRole)
self._showpostviewerdialog(post)
def _showlivepost(self, index):
"""A post has been double-clicked on in a thread table.
Show it.
"""
table = self.tabPosts.widget(self.tabPosts.currentIndex())
post = table.model().data(index, Qt.UserRole)
self._showpostviewerdialog(post)
def _showpostviewerdialog(self, post):
d = QDialog(self)
d.resize(1024, 768)
l = QVBoxLayout()
w = PostViewerWidget(post, self._backend, self._masterobserver, self)
w.nextpostrequested.connect(self._putnextpost)
w.previouspostrequested.connect(self._putpreviouspost)
w.closing.connect(d.close)
l.addWidget(w)
d.setLayout(l)
d.setModal(False)
d.show()
def _nextpostinsequence(self, widget, thread, reverse):
"""Gets the next or previous post of a post in a thread."""
if not isinstance(widget, PostViewerWidget):
raise TypeError("widget not of type PostViewerWidget but %s" %
str(type(widget)))
found = False
for post in sorted(thread.getposts(), key=lambda x: x.id(),
reverse=reverse):
if found: # found matching post in previous iteration
return post
if post.id() == widget.post().id():
found = True
return None
def _putnextpost(self, widget, post):
"""Set the current post in the given PostViewerWidget to the next post
in the thread.
@param widget Instance of PostViewerWidget.
@param post Instance of FourChanPost, whose next post should be shown
"""
nxt = self._nextpostinsequence(widget, post.thread(), False)
if not nxt is None:
widget.setpost(nxt)
def _putpreviouspost(self, widget, post):
"""Set the current post in the given PostViewerWidget to the previous
post in the thread.
@param widget Instance of PostViewerWidget.
@param post Instance of FourChanPost, whose next post should be shown
"""
prev = self._nextpostinsequence(widget, post.thread(), True)
if not prev is None:
widget.setpost(prev)
def _updatethread(self, url, post):
"""A post was retrieved through an observer, so update the corresponding
LiveFeedModel.
"""
for k, v in self._openthreads.iteritems():
if v[1].id_() == url.threadid():
v[2].model().addpost(post)
break
def _resumeobservedthreads(self):
"""Tells the backend to resume thread observation in case any
observations were cancelled."""
for pk, thread in self._backend.observedthreads():
print "Resumed observing thread %s" % thread.threadid()
observer = FourChanThreadObserver(thread, 30,
self._masterobserver)
self._masterobserver.addobserver(observer)
