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applets: dataset name completion
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commit
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@ -194,6 +194,80 @@ _templates = [
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]
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# Based on:
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# http://blog.elentok.com/2011/08/autocomplete-textbox-for-multiple.html
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class _AutoCompleteEdit(QtWidgets.QLineEdit):
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def __init__(self, parent, completer):
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QtWidgets.QLineEdit.__init__(self, parent)
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self._completer = completer
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self._completer.setWidget(self)
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self._completer.activated.connect(self._insert_completion)
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def _insert_completion(self, completion):
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parents = self._completer.completionPrefix()
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try:
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idx = parents.rindex(".")
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except ValueError:
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pass
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else:
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parents = parents[:idx+1]
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completion = parents + completion
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text = self.text()
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cursor = self.cursorPosition()
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word_start = cursor - 1
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while word_start >= 0 and text[word_start] != " ":
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word_start -= 1
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word_start += 1
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word_end = cursor
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while word_end < len(text) and text[word_end] != " ":
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word_end += 1
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self.setText(text[:word_start] + completion + text[word_end:])
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self.setCursorPosition(word_start + len(completion))
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def _update_completer_popup_items(self, completion_prefix):
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self._completer.setCompletionPrefix(completion_prefix)
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self._completer.popup().setCurrentIndex(
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self._completer.completionModel().index(0, 0))
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def _text_before_cursor(self):
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text = self.text()
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text_before_cursor = ""
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i = self.cursorPosition() - 1
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while i >= 0 and text[i] != " ":
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text_before_cursor = text[i] + text_before_cursor
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i -= 1
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return text_before_cursor
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def keyPressEvent(self, event):
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QtWidgets.QLineEdit.keyPressEvent(self, event)
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completion_prefix = self._text_before_cursor()
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if completion_prefix != self._completer.completionPrefix():
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self._update_completer_popup_items(completion_prefix)
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if completion_prefix:
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self._completer.complete()
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else:
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self._completer.popup().hide()
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class _CompleterDelegate(QtWidgets.QStyledItemDelegate):
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def createEditor(self, parent, option, index):
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completer = QtWidgets.QCompleter()
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completer.splitPath = lambda path: path.split(".")
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completer.setModelSorting(
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QtWidgets.QCompleter.CaseSensitivelySortedModel)
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completer.setCompletionRole(QtCore.Qt.DisplayRole)
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if hasattr(self, "model"):
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completer.setModel(self.model)
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return _AutoCompleteEdit(parent, completer)
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def set_model(self, model):
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self.model = model
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class AppletsDock(QtWidgets.QDockWidget):
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def __init__(self, main_window, datasets_sub):
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QtWidgets.QDockWidget.__init__(self, "Applets")
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@ -219,6 +293,10 @@ class AppletsDock(QtWidgets.QDockWidget):
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self.table.setTextElideMode(QtCore.Qt.ElideNone)
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self.setWidget(self.table)
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completer_delegate = _CompleterDelegate()
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self.table.setItemDelegateForColumn(2, completer_delegate)
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datasets_sub.add_setmodel_callback(completer_delegate.set_model)
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self.table.setContextMenuPolicy(QtCore.Qt.ActionsContextMenu)
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new_action = QtWidgets.QAction("New applet", self.table)
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new_action.triggered.connect(self.new)
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