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# Standard library imports
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# Standard library imports
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import sys
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import sys
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from textwrap import dedent
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from textwrap import dedent
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# System library imports
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# System library imports
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from PyQt4 import QtCore, QtGui
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from PyQt4 import QtCore, QtGui
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# Local imports
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# Local imports
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from ansi_code_processor import QtAnsiCodeProcessor
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from ansi_code_processor import QtAnsiCodeProcessor
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from completion_widget import CompletionWidget
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from completion_widget import CompletionWidget
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class ConsoleWidget(QtGui.QWidget):
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class ConsoleWidget(QtGui.QWidget):
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""" Base class for console-type widgets. This class is mainly concerned with
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""" Base class for console-type widgets. This class is mainly concerned with
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dealing with the prompt, keeping the cursor inside the editing line, and
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dealing with the prompt, keeping the cursor inside the editing line, and
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handling ANSI escape sequences.
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handling ANSI escape sequences.
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"""
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"""
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# Whether to process ANSI escape codes.
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# Whether to process ANSI escape codes.
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ansi_codes = True
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ansi_codes = True
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# The maximum number of lines of text before truncation.
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# The maximum number of lines of text before truncation.
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buffer_size = 500
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buffer_size = 500
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# Whether to use a CompletionWidget or plain text output for tab completion.
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# Whether to use a CompletionWidget or plain text output for tab completion.
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gui_completion = True
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gui_completion = True
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# Whether to override ShortcutEvents for the keybindings defined by this
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# Whether to override ShortcutEvents for the keybindings defined by this
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# widget (Ctrl+n, Ctrl+a, etc). Enable this if you want this widget to take
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# widget (Ctrl+n, Ctrl+a, etc). Enable this if you want this widget to take
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# priority (when it has focus) over, e.g., window-level menu shortcuts.
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# priority (when it has focus) over, e.g., window-level menu shortcuts.
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override_shortcuts = False
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override_shortcuts = False
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# Signals that indicate ConsoleWidget state.
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# Signals that indicate ConsoleWidget state.
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copy_available = QtCore.pyqtSignal(bool)
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copy_available = QtCore.pyqtSignal(bool)
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redo_available = QtCore.pyqtSignal(bool)
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redo_available = QtCore.pyqtSignal(bool)
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undo_available = QtCore.pyqtSignal(bool)
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undo_available = QtCore.pyqtSignal(bool)
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# Protected class variables.
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# Protected class variables.
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_ctrl_down_remap = { QtCore.Qt.Key_B : QtCore.Qt.Key_Left,
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_ctrl_down_remap = { QtCore.Qt.Key_B : QtCore.Qt.Key_Left,
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QtCore.Qt.Key_F : QtCore.Qt.Key_Right,
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QtCore.Qt.Key_F : QtCore.Qt.Key_Right,
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QtCore.Qt.Key_A : QtCore.Qt.Key_Home,
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QtCore.Qt.Key_A : QtCore.Qt.Key_Home,
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QtCore.Qt.Key_E : QtCore.Qt.Key_End,
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QtCore.Qt.Key_E : QtCore.Qt.Key_End,
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QtCore.Qt.Key_P : QtCore.Qt.Key_Up,
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QtCore.Qt.Key_P : QtCore.Qt.Key_Up,
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QtCore.Qt.Key_N : QtCore.Qt.Key_Down,
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QtCore.Qt.Key_N : QtCore.Qt.Key_Down,
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QtCore.Qt.Key_D : QtCore.Qt.Key_Delete, }
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QtCore.Qt.Key_D : QtCore.Qt.Key_Delete, }
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_shortcuts = set(_ctrl_down_remap.keys() +
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_shortcuts = set(_ctrl_down_remap.keys() +
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[ QtCore.Qt.Key_C, QtCore.Qt.Key_V ])
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[ QtCore.Qt.Key_C, QtCore.Qt.Key_V ])
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#---------------------------------------------------------------------------
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#---------------------------------------------------------------------------
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# 'QObject' interface
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# 'QObject' interface
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#---------------------------------------------------------------------------
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#---------------------------------------------------------------------------
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def __init__(self, kind='plain', parent=None):
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def __init__(self, kind='plain', parent=None):
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""" Create a ConsoleWidget.
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""" Create a ConsoleWidget.
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Parameters
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Parameters
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----------
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----------
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kind : str, optional [default 'plain']
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kind : str, optional [default 'plain']
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The type of text widget to use. Valid values are 'plain', which
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The type of text widget to use. Valid values are 'plain', which
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specifies a QPlainTextEdit, and 'rich', which specifies a QTextEdit.
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specifies a QPlainTextEdit, and 'rich', which specifies a QTextEdit.
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parent : QWidget, optional [default None]
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parent : QWidget, optional [default None]
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The parent for this widget.
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The parent for this widget.
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"""
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"""
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super(ConsoleWidget, self).__init__(parent)
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super(ConsoleWidget, self).__init__(parent)
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# Create the underlying text widget.
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# Create the underlying text widget.
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self._control = self._create_control(kind)
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self._control = self._create_control(kind)
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# Initialize protected variables. Some variables contain useful state
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# Initialize protected variables. Some variables contain useful state
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# information for subclasses; they should be considered read-only.
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# information for subclasses; they should be considered read-only.
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self._ansi_processor = QtAnsiCodeProcessor()
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self._ansi_processor = QtAnsiCodeProcessor()
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self._completion_widget = CompletionWidget(self._control)
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self._completion_widget = CompletionWidget(self._control)
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self._continuation_prompt = '> '
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self._continuation_prompt = '> '
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self._continuation_prompt_html = None
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self._continuation_prompt_html = None
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self._executing = False
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self._executing = False
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self._prompt = ''
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self._prompt = ''
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self._prompt_html = None
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self._prompt_html = None
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self._prompt_pos = 0
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self._prompt_pos = 0
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self._reading = False
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self._reading = False
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self._reading_callback = None
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self._reading_callback = None
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self._tab_width = 8
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self._tab_width = 8
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# Set a monospaced font.
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# Set a monospaced font.
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self.reset_font()
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self.reset_font()
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def eventFilter(self, obj, event):
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def eventFilter(self, obj, event):
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""" Reimplemented to ensure a console-like behavior in the underlying
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""" Reimplemented to ensure a console-like behavior in the underlying
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text widget.
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text widget.
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"""
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"""
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if obj == self._control:
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if obj == self._control:
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etype = event.type()
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etype = event.type()
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# Disable moving text by drag and drop.
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# Disable moving text by drag and drop.
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if etype == QtCore.QEvent.DragMove:
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if etype == QtCore.QEvent.DragMove:
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return True
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return True
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elif etype == QtCore.QEvent.KeyPress:
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elif etype == QtCore.QEvent.KeyPress:
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return self._event_filter_keypress(event)
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return self._event_filter_keypress(event)
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# On Mac OS, it is always unnecessary to override shortcuts, hence
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# On Mac OS, it is always unnecessary to override shortcuts, hence
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# the check below. Users should just use the Control key instead of
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# the check below. Users should just use the Control key instead of
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# the Command key.
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# the Command key.
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elif etype == QtCore.QEvent.ShortcutOverride:
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elif etype == QtCore.QEvent.ShortcutOverride:
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if sys.platform != 'darwin' and \
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if sys.platform != 'darwin' and \
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self._control_key_down(event.modifiers()) and \
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self._control_key_down(event.modifiers()) and \
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event.key() in self._shortcuts:
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event.key() in self._shortcuts:
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event.accept()
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event.accept()
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return False
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return False
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return super(ConsoleWidget, self).eventFilter(obj, event)
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return super(ConsoleWidget, self).eventFilter(obj, event)
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#---------------------------------------------------------------------------
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#---------------------------------------------------------------------------
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# 'ConsoleWidget' public interface
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# 'ConsoleWidget' public interface
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#---------------------------------------------------------------------------
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#---------------------------------------------------------------------------
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def can_paste(self):
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def can_paste(self):
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""" Returns whether text can be pasted from the clipboard.
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""" Returns whether text can be pasted from the clipboard.
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"""
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"""
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# Accept only text that can be ASCII encoded.
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# Accept only text that can be ASCII encoded.
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if self._control.textInteractionFlags() & QtCore.Qt.TextEditable:
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if self._control.textInteractionFlags() & QtCore.Qt.TextEditable:
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text = QtGui.QApplication.clipboard().text()
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text = QtGui.QApplication.clipboard().text()
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if not text.isEmpty():
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if not text.isEmpty():
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try:
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try:
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str(text)
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str(text)
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return True
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return True
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except UnicodeEncodeError:
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except UnicodeEncodeError:
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pass
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pass
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return False
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return False
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def clear(self, keep_input=False):
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def clear(self, keep_input=False):
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""" Clear the console, then write a new prompt. If 'keep_input' is set,
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""" Clear the console, then write a new prompt. If 'keep_input' is set,
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restores the old input buffer when the new prompt is written.
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restores the old input buffer when the new prompt is written.
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"""
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"""
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self._control.clear()
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self._control.clear()
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if keep_input:
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if keep_input:
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input_buffer = self.input_buffer
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input_buffer = self.input_buffer
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self._show_prompt()
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self._show_prompt()
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if keep_input:
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if keep_input:
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self.input_buffer = input_buffer
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self.input_buffer = input_buffer
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def copy(self):
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def copy(self):
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""" Copy the current selected text to the clipboard.
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""" Copy the current selected text to the clipboard.
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"""
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"""
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self._control.copy()
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self._control.copy()
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def execute(self, source=None, hidden=False, interactive=False):
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def execute(self, source=None, hidden=False, interactive=False):
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""" Executes source or the input buffer, possibly prompting for more
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""" Executes source or the input buffer, possibly prompting for more
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input.
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input.
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Parameters:
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Parameters:
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-----------
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-----------
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source : str, optional
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source : str, optional
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The source to execute. If not specified, the input buffer will be
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The source to execute. If not specified, the input buffer will be
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used. If specified and 'hidden' is False, the input buffer will be
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used. If specified and 'hidden' is False, the input buffer will be
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replaced with the source before execution.
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replaced with the source before execution.
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hidden : bool, optional (default False)
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hidden : bool, optional (default False)
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If set, no output will be shown and the prompt will not be modified.
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If set, no output will be shown and the prompt will not be modified.
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In other words, it will be completely invisible to the user that
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In other words, it will be completely invisible to the user that
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an execution has occurred.
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an execution has occurred.
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interactive : bool, optional (default False)
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interactive : bool, optional (default False)
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Whether the console is to treat the source as having been manually
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Whether the console is to treat the source as having been manually
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entered by the user. The effect of this parameter depends on the
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entered by the user. The effect of this parameter depends on the
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subclass implementation.
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subclass implementation.
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Raises:
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Raises:
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-------
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-------
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RuntimeError
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RuntimeError
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If incomplete input is given and 'hidden' is True. In this case,
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If incomplete input is given and 'hidden' is True. In this case,
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it not possible to prompt for more input.
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it not possible to prompt for more input.
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Returns:
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Returns:
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--------
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--------
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A boolean indicating whether the source was executed.
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A boolean indicating whether the source was executed.
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"""
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"""
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if not hidden:
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if not hidden:
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if source is not None:
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if source is not None:
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self.input_buffer = source
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self.input_buffer = source
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self._append_plain_text('\n')
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self._append_plain_text('\n')
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self._executing_input_buffer = self.input_buffer
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self._executing_input_buffer = self.input_buffer
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self._executing = True
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self._executing = True
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self._prompt_finished()
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self._prompt_finished()
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real_source = self.input_buffer if source is None else source
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real_source = self.input_buffer if source is None else source
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complete = self._is_complete(real_source, interactive)
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complete = self._is_complete(real_source, interactive)
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if complete:
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if complete:
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if not hidden:
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if not hidden:
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# The maximum block count is only in effect during execution.
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# The maximum block count is only in effect during execution.
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# This ensures that _prompt_pos does not become invalid due to
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# This ensures that _prompt_pos does not become invalid due to
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# text truncation.
|
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|
# text truncation.
|
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|
self._control.document().setMaximumBlockCount(self.buffer_size)
|
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|
self._control.document().setMaximumBlockCount(self.buffer_size)
|
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|
self._execute(real_source, hidden)
|
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|
self._execute(real_source, hidden)
|
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|
elif hidden:
|
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|
elif hidden:
|
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|
raise RuntimeError('Incomplete noninteractive input: "%s"' % source)
|
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|
raise RuntimeError('Incomplete noninteractive input: "%s"' % source)
|
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|
else:
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|
else:
|
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202
|
self._show_continuation_prompt()
|
|
202
|
self._show_continuation_prompt()
|
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|
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|
203
|
|
|
204
|
return complete
|
|
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|
return complete
|
|
205
|
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205
|
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|
206
|
def _get_input_buffer(self):
|
|
206
|
def _get_input_buffer(self):
|
|
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|
""" The text that the user has entered entered at the current prompt.
|
|
207
|
""" The text that the user has entered entered at the current prompt.
|
|
208
|
"""
|
|
208
|
"""
|
|
209
|
# If we're executing, the input buffer may not even exist anymore due to
|
|
209
|
# If we're executing, the input buffer may not even exist anymore due to
|
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210
|
# the limit imposed by 'buffer_size'. Therefore, we store it.
|
|
210
|
# the limit imposed by 'buffer_size'. Therefore, we store it.
|
|
211
|
if self._executing:
|
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|
if self._executing:
|
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212
|
return self._executing_input_buffer
|
|
212
|
return self._executing_input_buffer
|
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213
|
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213
|
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214
|
cursor = self._get_end_cursor()
|
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|
cursor = self._get_end_cursor()
|
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215
|
cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor)
|
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215
|
cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor)
|
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216
|
input_buffer = str(cursor.selection().toPlainText())
|
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216
|
input_buffer = str(cursor.selection().toPlainText())
|
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217
|
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|
217
|
|
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218
|
# Strip out continuation prompts.
|
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218
|
# Strip out continuation prompts.
|
|
219
|
return input_buffer.replace('\n' + self._continuation_prompt, '\n')
|
|
219
|
return input_buffer.replace('\n' + self._continuation_prompt, '\n')
|
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220
|
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|
220
|
|
|
221
|
def _set_input_buffer(self, string):
|
|
221
|
def _set_input_buffer(self, string):
|
|
222
|
""" Replaces the text in the input buffer with 'string'.
|
|
222
|
""" Replaces the text in the input buffer with 'string'.
|
|
223
|
"""
|
|
223
|
"""
|
|
224
|
# For now, it is an error to modify the input buffer during execution.
|
|
224
|
# For now, it is an error to modify the input buffer during execution.
|
|
225
|
if self._executing:
|
|
225
|
if self._executing:
|
|
226
|
raise RuntimeError("Cannot change input buffer during execution.")
|
|
226
|
raise RuntimeError("Cannot change input buffer during execution.")
|
|
227
|
|
|
227
|
|
|
228
|
# Remove old text.
|
|
228
|
# Remove old text.
|
|
229
|
cursor = self._get_end_cursor()
|
|
229
|
cursor = self._get_end_cursor()
|
|
230
|
cursor.beginEditBlock()
|
|
230
|
cursor.beginEditBlock()
|
|
231
|
cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor)
|
|
231
|
cursor.setPosition(self._prompt_pos, QtGui.QTextCursor.KeepAnchor)
|
|
232
|
cursor.removeSelectedText()
|
|
232
|
cursor.removeSelectedText()
|
|
233
|
|
|
233
|
|
|
234
|
# Insert new text with continuation prompts.
|
|
234
|
# Insert new text with continuation prompts.
|
|
235
|
lines = string.splitlines(True)
|
|
235
|
lines = string.splitlines(True)
|
|
236
|
if lines:
|
|
236
|
if lines:
|
|
237
|
self._append_plain_text(lines[0])
|
|
237
|
self._append_plain_text(lines[0])
|
|
238
|
for i in xrange(1, len(lines)):
|
|
238
|
for i in xrange(1, len(lines)):
|
|
239
|
if self._continuation_prompt_html is None:
|
|
239
|
if self._continuation_prompt_html is None:
|
|
240
|
self._append_plain_text(self._continuation_prompt)
|
|
240
|
self._append_plain_text(self._continuation_prompt)
|
|
241
|
else:
|
|
241
|
else:
|
|
242
|
self._append_html(self._continuation_prompt_html)
|
|
242
|
self._append_html(self._continuation_prompt_html)
|
|
243
|
self._append_plain_text(lines[i])
|
|
243
|
self._append_plain_text(lines[i])
|
|
244
|
cursor.endEditBlock()
|
|
244
|
cursor.endEditBlock()
|
|
245
|
self._control.moveCursor(QtGui.QTextCursor.End)
|
|
245
|
self._control.moveCursor(QtGui.QTextCursor.End)
|
|
246
|
|
|
246
|
|
|
247
|
input_buffer = property(_get_input_buffer, _set_input_buffer)
|
|
247
|
input_buffer = property(_get_input_buffer, _set_input_buffer)
|
|
248
|
|
|
248
|
|
|
249
|
def _get_font(self):
|
|
249
|
def _get_font(self):
|
|
250
|
""" The base font being used by the ConsoleWidget.
|
|
250
|
""" The base font being used by the ConsoleWidget.
|
|
251
|
"""
|
|
251
|
"""
|
|
252
|
return self._control.document().defaultFont()
|
|
252
|
return self._control.document().defaultFont()
|
|
253
|
|
|
253
|
|
|
254
|
def _set_font(self, font):
|
|
254
|
def _set_font(self, font):
|
|
255
|
""" Sets the base font for the ConsoleWidget to the specified QFont.
|
|
255
|
""" Sets the base font for the ConsoleWidget to the specified QFont.
|
|
256
|
"""
|
|
256
|
"""
|
|
257
|
font_metrics = QtGui.QFontMetrics(font)
|
|
257
|
font_metrics = QtGui.QFontMetrics(font)
|
|
258
|
self._control.setTabStopWidth(self.tab_width * font_metrics.width(' '))
|
|
258
|
self._control.setTabStopWidth(self.tab_width * font_metrics.width(' '))
|
|
259
|
|
|
259
|
|
|
260
|
self._completion_widget.setFont(font)
|
|
260
|
self._completion_widget.setFont(font)
|
|
261
|
self._control.document().setDefaultFont(font)
|
|
261
|
self._control.document().setDefaultFont(font)
|
|
262
|
|
|
262
|
|
|
263
|
font = property(_get_font, _set_font)
|
|
263
|
font = property(_get_font, _set_font)
|
|
264
|
|
|
264
|
|
|
265
|
def paste(self):
|
|
265
|
def paste(self):
|
|
266
|
""" Paste the contents of the clipboard into the input region.
|
|
266
|
""" Paste the contents of the clipboard into the input region.
|
|
267
|
"""
|
|
267
|
"""
|
|
268
|
if self._control.textInteractionFlags() & QtCore.Qt.TextEditable:
|
|
268
|
if self._control.textInteractionFlags() & QtCore.Qt.TextEditable:
|
|
269
|
try:
|
|
269
|
try:
|
|
270
|
text = str(QtGui.QApplication.clipboard().text())
|
|
270
|
text = str(QtGui.QApplication.clipboard().text())
|
|
271
|
except UnicodeEncodeError:
|
|
271
|
except UnicodeEncodeError:
|
|
272
|
pass
|
|
272
|
pass
|
|
273
|
else:
|
|
273
|
else:
|
|
274
|
self._insert_into_buffer(dedent(text))
|
|
274
|
self._insert_into_buffer(dedent(text))
|
|
275
|
|
|
275
|
|
|
276
|
def print_(self, printer):
|
|
276
|
def print_(self, printer):
|
|
277
|
""" Print the contents of the ConsoleWidget to the specified QPrinter.
|
|
277
|
""" Print the contents of the ConsoleWidget to the specified QPrinter.
|
|
278
|
"""
|
|
278
|
"""
|
|
279
|
self._control.print_(printer)
|
|
279
|
self._control.print_(printer)
|
|
280
|
|
|
280
|
|
|
281
|
def redo(self):
|
|
281
|
def redo(self):
|
|
282
|
""" Redo the last operation. If there is no operation to redo, nothing
|
|
282
|
""" Redo the last operation. If there is no operation to redo, nothing
|
|
283
|
happens.
|
|
283
|
happens.
|
|
284
|
"""
|
|
284
|
"""
|
|
285
|
self._control.redo()
|
|
285
|
self._control.redo()
|
|
286
|
|
|
286
|
|
|
287
|
def reset_font(self):
|
|
287
|
def reset_font(self):
|
|
288
|
""" Sets the font to the default fixed-width font for this platform.
|
|
288
|
""" Sets the font to the default fixed-width font for this platform.
|
|
289
|
"""
|
|
289
|
"""
|
|
290
|
if sys.platform == 'win32':
|
|
290
|
if sys.platform == 'win32':
|
|
291
|
name = 'Courier'
|
|
291
|
name = 'Courier'
|
|
292
|
elif sys.platform == 'darwin':
|
|
292
|
elif sys.platform == 'darwin':
|
|
293
|
name = 'Monaco'
|
|
293
|
name = 'Monaco'
|
|
294
|
else:
|
|
294
|
else:
|
|
295
|
name = 'Monospace'
|
|
295
|
name = 'Monospace'
|
|
296
|
font = QtGui.QFont(name, QtGui.qApp.font().pointSize())
|
|
296
|
font = QtGui.QFont(name, QtGui.qApp.font().pointSize())
|
|
297
|
font.setStyleHint(QtGui.QFont.TypeWriter)
|
|
297
|
font.setStyleHint(QtGui.QFont.TypeWriter)
|
|
298
|
self._set_font(font)
|
|
298
|
self._set_font(font)
|
|
299
|
|
|
299
|
|
|
300
|
def select_all(self):
|
|
300
|
def select_all(self):
|
|
301
|
""" Selects all the text in the buffer.
|
|
301
|
""" Selects all the text in the buffer.
|
|
302
|
"""
|
|
302
|
"""
|
|
303
|
self._control.selectAll()
|
|
303
|
self._control.selectAll()
|
|
304
|
|
|
304
|
|
|
305
|
def _get_tab_width(self):
|
|
305
|
def _get_tab_width(self):
|
|
306
|
""" The width (in terms of space characters) for tab characters.
|
|
306
|
""" The width (in terms of space characters) for tab characters.
|
|
307
|
"""
|
|
307
|
"""
|
|
308
|
return self._tab_width
|
|
308
|
return self._tab_width
|
|
309
|
|
|
309
|
|
|
310
|
def _set_tab_width(self, tab_width):
|
|
310
|
def _set_tab_width(self, tab_width):
|
|
311
|
""" Sets the width (in terms of space characters) for tab characters.
|
|
311
|
""" Sets the width (in terms of space characters) for tab characters.
|
|
312
|
"""
|
|
312
|
"""
|
|
313
|
font_metrics = QtGui.QFontMetrics(self.font)
|
|
313
|
font_metrics = QtGui.QFontMetrics(self.font)
|
|
314
|
self._control.setTabStopWidth(tab_width * font_metrics.width(' '))
|
|
314
|
self._control.setTabStopWidth(tab_width * font_metrics.width(' '))
|
|
315
|
|
|
315
|
|
|
316
|
self._tab_width = tab_width
|
|
316
|
self._tab_width = tab_width
|
|
317
|
|
|
317
|
|
|
318
|
tab_width = property(_get_tab_width, _set_tab_width)
|
|
318
|
tab_width = property(_get_tab_width, _set_tab_width)
|
|
319
|
|
|
319
|
|
|
320
|
def undo(self):
|
|
320
|
def undo(self):
|
|
321
|
""" Undo the last operation. If there is no operation to undo, nothing
|
|
321
|
""" Undo the last operation. If there is no operation to undo, nothing
|
|
322
|
happens.
|
|
322
|
happens.
|
|
323
|
"""
|
|
323
|
"""
|
|
324
|
self._control.undo()
|
|
324
|
self._control.undo()
|
|
325
|
|
|
325
|
|
|
326
|
#---------------------------------------------------------------------------
|
|
326
|
#---------------------------------------------------------------------------
|
|
327
|
# 'ConsoleWidget' abstract interface
|
|
327
|
# 'ConsoleWidget' abstract interface
|
|
328
|
#---------------------------------------------------------------------------
|
|
328
|
#---------------------------------------------------------------------------
|
|
329
|
|
|
329
|
|
|
330
|
def _is_complete(self, source, interactive):
|
|
330
|
def _is_complete(self, source, interactive):
|
|
331
|
""" Returns whether 'source' can be executed. When triggered by an
|
|
331
|
""" Returns whether 'source' can be executed. When triggered by an
|
|
332
|
Enter/Return key press, 'interactive' is True; otherwise, it is
|
|
332
|
Enter/Return key press, 'interactive' is True; otherwise, it is
|
|
333
|
False.
|
|
333
|
False.
|
|
334
|
"""
|
|
334
|
"""
|
|
335
|
raise NotImplementedError
|
|
335
|
raise NotImplementedError
|
|
336
|
|
|
336
|
|
|
337
|
def _execute(self, source, hidden):
|
|
337
|
def _execute(self, source, hidden):
|
|
338
|
""" Execute 'source'. If 'hidden', do not show any output.
|
|
338
|
""" Execute 'source'. If 'hidden', do not show any output.
|
|
339
|
"""
|
|
339
|
"""
|
|
340
|
raise NotImplementedError
|
|
340
|
raise NotImplementedError
|
|
341
|
|
|
341
|
|
|
342
|
def _execute_interrupt(self):
|
|
342
|
def _execute_interrupt(self):
|
|
343
|
""" Attempts to stop execution. Returns whether this method has an
|
|
343
|
""" Attempts to stop execution. Returns whether this method has an
|
|
344
|
implementation.
|
|
344
|
implementation.
|
|
345
|
"""
|
|
345
|
"""
|
|
346
|
return False
|
|
346
|
return False
|
|
347
|
|
|
347
|
|
|
348
|
def _prompt_started_hook(self):
|
|
348
|
def _prompt_started_hook(self):
|
|
349
|
""" Called immediately after a new prompt is displayed.
|
|
349
|
""" Called immediately after a new prompt is displayed.
|
|
350
|
"""
|
|
350
|
"""
|
|
351
|
pass
|
|
351
|
pass
|
|
352
|
|
|
352
|
|
|
353
|
def _prompt_finished_hook(self):
|
|
353
|
def _prompt_finished_hook(self):
|
|
354
|
""" Called immediately after a prompt is finished, i.e. when some input
|
|
354
|
""" Called immediately after a prompt is finished, i.e. when some input
|
|
355
|
will be processed and a new prompt displayed.
|
|
355
|
will be processed and a new prompt displayed.
|
|
356
|
"""
|
|
356
|
"""
|
|
357
|
pass
|
|
357
|
pass
|
|
358
|
|
|
358
|
|
|
359
|
def _up_pressed(self):
|
|
359
|
def _up_pressed(self):
|
|
360
|
""" Called when the up key is pressed. Returns whether to continue
|
|
360
|
""" Called when the up key is pressed. Returns whether to continue
|
|
361
|
processing the event.
|
|
361
|
processing the event.
|
|
362
|
"""
|
|
362
|
"""
|
|
363
|
return True
|
|
363
|
return True
|
|
364
|
|
|
364
|
|
|
365
|
def _down_pressed(self):
|
|
365
|
def _down_pressed(self):
|
|
366
|
""" Called when the down key is pressed. Returns whether to continue
|
|
366
|
""" Called when the down key is pressed. Returns whether to continue
|
|
367
|
processing the event.
|
|
367
|
processing the event.
|
|
368
|
"""
|
|
368
|
"""
|
|
369
|
return True
|
|
369
|
return True
|
|
370
|
|
|
370
|
|
|
371
|
def _tab_pressed(self):
|
|
371
|
def _tab_pressed(self):
|
|
372
|
""" Called when the tab key is pressed. Returns whether to continue
|
|
372
|
""" Called when the tab key is pressed. Returns whether to continue
|
|
373
|
processing the event.
|
|
373
|
processing the event.
|
|
374
|
"""
|
|
374
|
"""
|
|
375
|
return False
|
|
375
|
return False
|
|
376
|
|
|
376
|
|
|
377
|
#--------------------------------------------------------------------------
|
|
377
|
#--------------------------------------------------------------------------
|
|
378
|
# 'ConsoleWidget' protected interface
|
|
378
|
# 'ConsoleWidget' protected interface
|
|
379
|
#--------------------------------------------------------------------------
|
|
379
|
#--------------------------------------------------------------------------
|
|
380
|
|
|
380
|
|
|
381
|
def _append_html(self, html):
|
|
381
|
def _append_html(self, html):
|
|
382
|
""" Appends html at the end of the console buffer.
|
|
382
|
""" Appends html at the end of the console buffer.
|
|
383
|
"""
|
|
383
|
"""
|
|
384
|
cursor = self._get_end_cursor()
|
|
384
|
cursor = self._get_end_cursor()
|
|
385
|
self._insert_html(cursor, html)
|
|
385
|
self._insert_html(cursor, html)
|
|
386
|
|
|
386
|
|
|
387
|
def _append_html_fetching_plain_text(self, html):
|
|
387
|
def _append_html_fetching_plain_text(self, html):
|
|
388
|
""" Appends 'html', then returns the plain text version of it.
|
|
388
|
""" Appends 'html', then returns the plain text version of it.
|
|
389
|
"""
|
|
389
|
"""
|
|
390
|
anchor = self._get_end_cursor().position()
|
|
390
|
anchor = self._get_end_cursor().position()
|
|
391
|
self._append_html(html)
|
|
391
|
self._append_html(html)
|
|
392
|
cursor = self._get_end_cursor()
|
|
392
|
cursor = self._get_end_cursor()
|
|
393
|
cursor.setPosition(anchor, QtGui.QTextCursor.KeepAnchor)
|
|
393
|
cursor.setPosition(anchor, QtGui.QTextCursor.KeepAnchor)
|
|
394
|
return str(cursor.selection().toPlainText())
|
|
394
|
return str(cursor.selection().toPlainText())
|
|
395
|
|
|
395
|
|
|
396
|
def _append_plain_text(self, text):
|
|
396
|
def _append_plain_text(self, text):
|
|
397
|
""" Appends plain text at the end of the console buffer, processing
|
|
397
|
""" Appends plain text at the end of the console buffer, processing
|
|
398
|
ANSI codes if enabled.
|
|
398
|
ANSI codes if enabled.
|
|
399
|
"""
|
|
399
|
"""
|
|
400
|
cursor = self._get_end_cursor()
|
|
400
|
cursor = self._get_end_cursor()
|
|
401
|
cursor.beginEditBlock()
|
|
401
|
cursor.beginEditBlock()
|
|
402
|
if self.ansi_codes:
|
|
402
|
if self.ansi_codes:
|
|
403
|
for substring in self._ansi_processor.split_string(text):
|
|
403
|
for substring in self._ansi_processor.split_string(text):
|
|
404
|
format = self._ansi_processor.get_format()
|
|
404
|
format = self._ansi_processor.get_format()
|
|
405
|
cursor.insertText(substring, format)
|
|
405
|
cursor.insertText(substring, format)
|
|
406
|
else:
|
|
406
|
else:
|
|
407
|
cursor.insertText(text)
|
|
407
|
cursor.insertText(text)
|
|
408
|
cursor.endEditBlock()
|
|
408
|
cursor.endEditBlock()
|
|
409
|
|
|
409
|
|
|
410
|
def _append_plain_text_keeping_prompt(self, text):
|
|
410
|
def _append_plain_text_keeping_prompt(self, text):
|
|
411
|
""" Writes 'text' after the current prompt, then restores the old prompt
|
|
411
|
""" Writes 'text' after the current prompt, then restores the old prompt
|
|
412
|
with its old input buffer.
|
|
412
|
with its old input buffer.
|
|
413
|
"""
|
|
413
|
"""
|
|
414
|
input_buffer = self.input_buffer
|
|
414
|
input_buffer = self.input_buffer
|
|
415
|
self._append_plain_text('\n')
|
|
415
|
self._append_plain_text('\n')
|
|
416
|
self._prompt_finished()
|
|
416
|
self._prompt_finished()
|
|
417
|
|
|
417
|
|
|
418
|
self._append_plain_text(text)
|
|
418
|
self._append_plain_text(text)
|
|
419
|
self._show_prompt()
|
|
419
|
self._show_prompt()
|
|
420
|
self.input_buffer = input_buffer
|
|
420
|
self.input_buffer = input_buffer
|
|
421
|
|
|
421
|
|
|
422
|
def _complete_with_items(self, cursor, items):
|
|
422
|
def _complete_with_items(self, cursor, items):
|
|
423
|
""" Performs completion with 'items' at the specified cursor location.
|
|
423
|
""" Performs completion with 'items' at the specified cursor location.
|
|
424
|
"""
|
|
424
|
"""
|
|
425
|
if len(items) == 1:
|
|
425
|
if len(items) == 1:
|
|
426
|
cursor.setPosition(self._control.textCursor().position(),
|
|
426
|
cursor.setPosition(self._control.textCursor().position(),
|
|
427
|
QtGui.QTextCursor.KeepAnchor)
|
|
427
|
QtGui.QTextCursor.KeepAnchor)
|
|
428
|
cursor.insertText(items[0])
|
|
428
|
cursor.insertText(items[0])
|
|
429
|
elif len(items) > 1:
|
|
429
|
elif len(items) > 1:
|
|
430
|
if self.gui_completion:
|
|
430
|
if self.gui_completion:
|
|
431
|
self._completion_widget.show_items(cursor, items)
|
|
431
|
self._completion_widget.show_items(cursor, items)
|
|
432
|
else:
|
|
432
|
else:
|
|
433
|
text = self._format_as_columns(items)
|
|
433
|
text = self._format_as_columns(items)
|
|
434
|
self._append_plain_text_keeping_prompt(text)
|
|
434
|
self._append_plain_text_keeping_prompt(text)
|
|
435
|
|
|
435
|
|
|
436
|
def _control_key_down(self, modifiers):
|
|
436
|
def _control_key_down(self, modifiers):
|
|
437
|
""" Given a KeyboardModifiers flags object, return whether the Control
|
|
437
|
""" Given a KeyboardModifiers flags object, return whether the Control
|
|
438
|
key is down (on Mac OS, treat the Command key as a synonym for
|
|
438
|
key is down (on Mac OS, treat the Command key as a synonym for
|
|
439
|
Control).
|
|
439
|
Control).
|
|
440
|
"""
|
|
440
|
"""
|
|
441
|
down = bool(modifiers & QtCore.Qt.ControlModifier)
|
|
441
|
down = bool(modifiers & QtCore.Qt.ControlModifier)
|
|
442
|
|
|
442
|
|
|
443
|
# Note: on Mac OS, ControlModifier corresponds to the Command key while
|
|
443
|
# Note: on Mac OS, ControlModifier corresponds to the Command key while
|
|
444
|
# MetaModifier corresponds to the Control key.
|
|
444
|
# MetaModifier corresponds to the Control key.
|
|
445
|
if sys.platform == 'darwin':
|
|
445
|
if sys.platform == 'darwin':
|
|
446
|
down = down ^ bool(modifiers & QtCore.Qt.MetaModifier)
|
|
446
|
down = down ^ bool(modifiers & QtCore.Qt.MetaModifier)
|
|
447
|
|
|
447
|
|
|
448
|
return down
|
|
448
|
return down
|
|
449
|
|
|
449
|
|
|
450
|
def _create_control(self, kind):
|
|
450
|
def _create_control(self, kind):
|
|
451
|
""" Creates and sets the underlying text widget.
|
|
451
|
""" Creates and sets the underlying text widget.
|
|
452
|
"""
|
|
452
|
"""
|
|
453
|
layout = QtGui.QVBoxLayout(self)
|
|
453
|
layout = QtGui.QVBoxLayout(self)
|
|
454
|
layout.setMargin(0)
|
|
454
|
layout.setMargin(0)
|
|
455
|
if kind == 'plain':
|
|
455
|
if kind == 'plain':
|
|
456
|
control = QtGui.QPlainTextEdit()
|
|
456
|
control = QtGui.QPlainTextEdit()
|
|
457
|
elif kind == 'rich':
|
|
457
|
elif kind == 'rich':
|
|
458
|
control = QtGui.QTextEdit()
|
|
458
|
control = QtGui.QTextEdit()
|
|
459
|
control.setAcceptRichText(False)
|
|
459
|
control.setAcceptRichText(False)
|
|
460
|
else:
|
|
460
|
else:
|
|
461
|
raise ValueError("Kind %s unknown." % repr(kind))
|
|
461
|
raise ValueError("Kind %s unknown." % repr(kind))
|
|
462
|
layout.addWidget(control)
|
|
462
|
layout.addWidget(control)
|
|
463
|
|
|
463
|
|
|
464
|
control.installEventFilter(self)
|
|
464
|
control.installEventFilter(self)
|
|
465
|
control.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
|
|
465
|
control.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
|
|
466
|
control.customContextMenuRequested.connect(self._show_context_menu)
|
|
466
|
control.customContextMenuRequested.connect(self._show_context_menu)
|
|
467
|
control.copyAvailable.connect(self.copy_available)
|
|
467
|
control.copyAvailable.connect(self.copy_available)
|
|
468
|
control.redoAvailable.connect(self.redo_available)
|
|
468
|
control.redoAvailable.connect(self.redo_available)
|
|
469
|
control.undoAvailable.connect(self.undo_available)
|
|
469
|
control.undoAvailable.connect(self.undo_available)
|
|
470
|
|
|
470
|
|
|
471
|
return control
|
|
471
|
return control
|
|
472
|
|
|
472
|
|
|
473
|
def _event_filter_keypress(self, event):
|
|
473
|
def _event_filter_keypress(self, event):
|
|
474
|
""" Filter key events for the underlying text widget to create a
|
|
474
|
""" Filter key events for the underlying text widget to create a
|
|
475
|
console-like interface.
|
|
475
|
console-like interface.
|
|
476
|
"""
|
|
476
|
"""
|
|
477
|
key = event.key()
|
|
477
|
key = event.key()
|
|
478
|
ctrl_down = self._control_key_down(event.modifiers())
|
|
478
|
ctrl_down = self._control_key_down(event.modifiers())
|
|
479
|
|
|
479
|
|
|
480
|
# If the key is remapped, return immediately.
|
|
480
|
# If the key is remapped, return immediately.
|
|
481
|
if ctrl_down and key in self._ctrl_down_remap:
|
|
481
|
if ctrl_down and key in self._ctrl_down_remap:
|
|
482
|
new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress,
|
|
482
|
new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress,
|
|
483
|
self._ctrl_down_remap[key],
|
|
483
|
self._ctrl_down_remap[key],
|
|
484
|
QtCore.Qt.NoModifier)
|
|
484
|
QtCore.Qt.NoModifier)
|
|
485
|
QtGui.qApp.sendEvent(self._control, new_event)
|
|
485
|
QtGui.qApp.sendEvent(self._control, new_event)
|
|
486
|
return True
|
|
486
|
return True
|
|
487
|
|
|
487
|
|
|
488
|
# Otherwise, proceed normally and do not return early.
|
|
488
|
# Otherwise, proceed normally and do not return early.
|
|
489
|
intercepted = False
|
|
489
|
intercepted = False
|
|
490
|
cursor = self._control.textCursor()
|
|
490
|
cursor = self._control.textCursor()
|
|
491
|
position = cursor.position()
|
|
491
|
position = cursor.position()
|
|
492
|
alt_down = event.modifiers() & QtCore.Qt.AltModifier
|
|
492
|
alt_down = event.modifiers() & QtCore.Qt.AltModifier
|
|
493
|
shift_down = event.modifiers() & QtCore.Qt.ShiftModifier
|
|
493
|
shift_down = event.modifiers() & QtCore.Qt.ShiftModifier
|
|
494
|
|
|
494
|
|
|
495
|
if event.matches(QtGui.QKeySequence.Paste):
|
|
495
|
if event.matches(QtGui.QKeySequence.Paste):
|
|
496
|
# Call our paste instead of the underlying text widget's.
|
|
496
|
# Call our paste instead of the underlying text widget's.
|
|
497
|
self.paste()
|
|
497
|
self.paste()
|
|
498
|
intercepted = True
|
|
498
|
intercepted = True
|
|
499
|
|
|
499
|
|
|
500
|
elif ctrl_down:
|
|
500
|
elif ctrl_down:
|
|
501
|
if key == QtCore.Qt.Key_C:
|
|
501
|
if key == QtCore.Qt.Key_C:
|
|
502
|
intercepted = self._executing and self._execute_interrupt()
|
|
502
|
intercepted = self._executing and self._execute_interrupt()
|
|
503
|
|
|
503
|
|
|
504
|
elif key == QtCore.Qt.Key_K:
|
|
504
|
elif key == QtCore.Qt.Key_K:
|
|
505
|
if self._in_buffer(position):
|
|
505
|
if self._in_buffer(position):
|
|
506
|
cursor.movePosition(QtGui.QTextCursor.EndOfLine,
|
|
506
|
cursor.movePosition(QtGui.QTextCursor.EndOfLine,
|
|
507
|
QtGui.QTextCursor.KeepAnchor)
|
|
507
|
QtGui.QTextCursor.KeepAnchor)
|
|
508
|
cursor.removeSelectedText()
|
|
508
|
cursor.removeSelectedText()
|
|
509
|
intercepted = True
|
|
509
|
intercepted = True
|
|
510
|
|
|
510
|
|
|
511
|
elif key == QtCore.Qt.Key_X:
|
|
511
|
elif key == QtCore.Qt.Key_X:
|
|
512
|
intercepted = True
|
|
512
|
intercepted = True
|
|
513
|
|
|
513
|
|
|
514
|
elif key == QtCore.Qt.Key_Y:
|
|
514
|
elif key == QtCore.Qt.Key_Y:
|
|
515
|
self.paste()
|
|
515
|
self.paste()
|
|
516
|
intercepted = True
|
|
516
|
intercepted = True
|
|
517
|
|
|
517
|
|
|
518
|
elif alt_down:
|
|
518
|
elif alt_down:
|
|
519
|
if key == QtCore.Qt.Key_B:
|
|
519
|
if key == QtCore.Qt.Key_B:
|
|
520
|
self._set_cursor(self._get_word_start_cursor(position))
|
|
520
|
self._set_cursor(self._get_word_start_cursor(position))
|
|
521
|
intercepted = True
|
|
521
|
intercepted = True
|
|
522
|
|
|
522
|
|
|
523
|
elif key == QtCore.Qt.Key_F:
|
|
523
|
elif key == QtCore.Qt.Key_F:
|
|
524
|
self._set_cursor(self._get_word_end_cursor(position))
|
|
524
|
self._set_cursor(self._get_word_end_cursor(position))
|
|
525
|
intercepted = True
|
|
525
|
intercepted = True
|
|
526
|
|
|
526
|
|
|
527
|
elif key == QtCore.Qt.Key_Backspace:
|
|
527
|
elif key == QtCore.Qt.Key_Backspace:
|
|
528
|
cursor = self._get_word_start_cursor(position)
|
|
528
|
cursor = self._get_word_start_cursor(position)
|
|
529
|
cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor)
|
|
529
|
cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor)
|
|
530
|
cursor.removeSelectedText()
|
|
530
|
cursor.removeSelectedText()
|
|
531
|
intercepted = True
|
|
531
|
intercepted = True
|
|
532
|
|
|
532
|
|
|
533
|
elif key == QtCore.Qt.Key_D:
|
|
533
|
elif key == QtCore.Qt.Key_D:
|
|
534
|
cursor = self._get_word_end_cursor(position)
|
|
534
|
cursor = self._get_word_end_cursor(position)
|
|
535
|
cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor)
|
|
535
|
cursor.setPosition(position, QtGui.QTextCursor.KeepAnchor)
|
|
536
|
cursor.removeSelectedText()
|
|
536
|
cursor.removeSelectedText()
|
|
537
|
intercepted = True
|
|
537
|
intercepted = True
|
|
538
|
|
|
538
|
|
|
539
|
else:
|
|
539
|
else:
|
|
540
|
if key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter):
|
|
540
|
if key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter):
|
|
541
|
if self._reading:
|
|
541
|
if self._reading:
|
|
542
|
self._append_plain_text('\n')
|
|
542
|
self._append_plain_text('\n')
|
|
543
|
self._reading = False
|
|
543
|
self._reading = False
|
|
544
|
if self._reading_callback:
|
|
544
|
if self._reading_callback:
|
|
545
|
self._reading_callback()
|
|
545
|
self._reading_callback()
|
|
546
|
elif not self._executing:
|
|
546
|
elif not self._executing:
|
|
547
|
self.execute(interactive=True)
|
|
547
|
self.execute(interactive=True)
|
|
548
|
intercepted = True
|
|
548
|
intercepted = True
|
|
549
|
|
|
549
|
|
|
550
|
elif key == QtCore.Qt.Key_Up:
|
|
550
|
elif key == QtCore.Qt.Key_Up:
|
|
551
|
if self._reading or not self._up_pressed():
|
|
551
|
if self._reading or not self._up_pressed():
|
|
552
|
intercepted = True
|
|
552
|
intercepted = True
|
|
553
|
else:
|
|
553
|
else:
|
|
554
|
prompt_line = self._get_prompt_cursor().blockNumber()
|
|
554
|
prompt_line = self._get_prompt_cursor().blockNumber()
|
|
555
|
intercepted = cursor.blockNumber() <= prompt_line
|
|
555
|
intercepted = cursor.blockNumber() <= prompt_line
|
|
556
|
|
|
556
|
|
|
557
|
elif key == QtCore.Qt.Key_Down:
|
|
557
|
elif key == QtCore.Qt.Key_Down:
|
|
558
|
if self._reading or not self._down_pressed():
|
|
558
|
if self._reading or not self._down_pressed():
|
|
559
|
intercepted = True
|
|
559
|
intercepted = True
|
|
560
|
else:
|
|
560
|
else:
|
|
561
|
end_line = self._get_end_cursor().blockNumber()
|
|
561
|
end_line = self._get_end_cursor().blockNumber()
|
|
562
|
intercepted = cursor.blockNumber() == end_line
|
|
562
|
intercepted = cursor.blockNumber() == end_line
|
|
563
|
|
|
563
|
|
|
564
|
elif key == QtCore.Qt.Key_Tab:
|
|
564
|
elif key == QtCore.Qt.Key_Tab:
|
|
565
|
if self._reading:
|
|
565
|
if self._reading:
|
|
566
|
intercepted = False
|
|
566
|
intercepted = False
|
|
567
|
else:
|
|
567
|
else:
|
|
568
|
intercepted = not self._tab_pressed()
|
|
568
|
intercepted = not self._tab_pressed()
|
|
569
|
|
|
569
|
|
|
570
|
elif key == QtCore.Qt.Key_Left:
|
|
570
|
elif key == QtCore.Qt.Key_Left:
|
|
571
|
intercepted = not self._in_buffer(position - 1)
|
|
571
|
intercepted = not self._in_buffer(position - 1)
|
|
572
|
|
|
572
|
|
|
573
|
elif key == QtCore.Qt.Key_Home:
|
|
573
|
elif key == QtCore.Qt.Key_Home:
|
|
574
|
cursor.movePosition(QtGui.QTextCursor.StartOfBlock)
|
|
574
|
cursor.movePosition(QtGui.QTextCursor.StartOfBlock)
|
|
575
|
start_line = cursor.blockNumber()
|
|
575
|
start_line = cursor.blockNumber()
|
|
576
|
if start_line == self._get_prompt_cursor().blockNumber():
|
|
576
|
if start_line == self._get_prompt_cursor().blockNumber():
|
|
577
|
start_pos = self._prompt_pos
|
|
577
|
start_pos = self._prompt_pos
|
|
578
|
else:
|
|
578
|
else:
|
|
579
|
start_pos = cursor.position()
|
|
579
|
start_pos = cursor.position()
|
|
580
|
start_pos += len(self._continuation_prompt)
|
|
580
|
start_pos += len(self._continuation_prompt)
|
|
581
|
if shift_down and self._in_buffer(position):
|
|
581
|
if shift_down and self._in_buffer(position):
|
|
582
|
self._set_selection(position, start_pos)
|
|
582
|
self._set_selection(position, start_pos)
|
|
583
|
else:
|
|
583
|
else:
|
|
584
|
self._set_position(start_pos)
|
|
584
|
self._set_position(start_pos)
|
|
585
|
intercepted = True
|
|
585
|
intercepted = True
|
|
586
|
|
|
586
|
|
|
587
|
elif key == QtCore.Qt.Key_Backspace:
|
|
587
|
elif key == QtCore.Qt.Key_Backspace:
|
|
588
|
|
|
588
|
|
|
589
|
# Line deletion (remove continuation prompt)
|
|
589
|
# Line deletion (remove continuation prompt)
|
|
590
|
len_prompt = len(self._continuation_prompt)
|
|
590
|
len_prompt = len(self._continuation_prompt)
|
|
591
|
if not self._reading and \
|
|
591
|
if not self._reading and \
|
|
592
|
cursor.columnNumber() == len_prompt and \
|
|
592
|
cursor.columnNumber() == len_prompt and \
|
|
593
|
position != self._prompt_pos:
|
|
593
|
position != self._prompt_pos:
|
|
594
|
cursor.movePosition(QtGui.QTextCursor.StartOfBlock,
|
|
594
|
cursor.movePosition(QtGui.QTextCursor.StartOfBlock,
|
|
595
|
QtGui.QTextCursor.KeepAnchor)
|
|
595
|
QtGui.QTextCursor.KeepAnchor)
|
|
596
|
cursor.removeSelectedText()
|
|
596
|
cursor.removeSelectedText()
|
|
597
|
|
|
597
|
|
|
598
|
# Regular backwards deletion
|
|
598
|
# Regular backwards deletion
|
|
599
|
else:
|
|
599
|
else:
|
|
600
|
anchor = cursor.anchor()
|
|
600
|
anchor = cursor.anchor()
|
|
601
|
if anchor == position:
|
|
601
|
if anchor == position:
|
|
602
|
intercepted = not self._in_buffer(position - 1)
|
|
602
|
intercepted = not self._in_buffer(position - 1)
|
|
603
|
else:
|
|
603
|
else:
|
|
604
|
intercepted = not self._in_buffer(min(anchor, position))
|
|
604
|
intercepted = not self._in_buffer(min(anchor, position))
|
|
605
|
|
|
605
|
|
|
606
|
elif key == QtCore.Qt.Key_Delete:
|
|
606
|
elif key == QtCore.Qt.Key_Delete:
|
|
607
|
anchor = cursor.anchor()
|
|
607
|
anchor = cursor.anchor()
|
|
608
|
intercepted = not self._in_buffer(min(anchor, position))
|
|
608
|
intercepted = not self._in_buffer(min(anchor, position))
|
|
609
|
|
|
609
|
|
|
610
|
# Don't move the cursor if control is down to allow copy-paste using
|
|
610
|
# Don't move the cursor if control is down to allow copy-paste using
|
|
611
|
# the keyboard in any part of the buffer.
|
|
611
|
# the keyboard in any part of the buffer.
|
|
612
|
if not ctrl_down:
|
|
612
|
if not ctrl_down:
|
|
613
|
self._keep_cursor_in_buffer()
|
|
613
|
self._keep_cursor_in_buffer()
|
|
614
|
|
|
614
|
|
|
615
|
return intercepted
|
|
615
|
return intercepted
|
|
616
|
|
|
616
|
|
|
617
|
def _format_as_columns(self, items, separator=' '):
|
|
617
|
def _format_as_columns(self, items, separator=' '):
|
|
618
|
""" Transform a list of strings into a single string with columns.
|
|
618
|
""" Transform a list of strings into a single string with columns.
|
|
619
|
|
|
619
|
|
|
620
|
Parameters
|
|
620
|
Parameters
|
|
621
|
----------
|
|
621
|
----------
|
|
622
|
items : sequence of strings
|
|
622
|
items : sequence of strings
|
|
623
|
The strings to process.
|
|
623
|
The strings to process.
|
|
624
|
|
|
624
|
|
|
625
|
separator : str, optional [default is two spaces]
|
|
625
|
separator : str, optional [default is two spaces]
|
|
626
|
The string that separates columns.
|
|
626
|
The string that separates columns.
|
|
627
|
|
|
627
|
|
|
628
|
Returns
|
|
628
|
Returns
|
|
629
|
-------
|
|
629
|
-------
|
|
630
|
The formatted string.
|
|
630
|
The formatted string.
|
|
631
|
"""
|
|
631
|
"""
|
|
632
|
# Note: this code is adapted from columnize 0.3.2.
|
|
632
|
# Note: this code is adapted from columnize 0.3.2.
|
|
633
|
# See http://code.google.com/p/pycolumnize/
|
|
633
|
# See http://code.google.com/p/pycolumnize/
|
|
634
|
|
|
634
|
|
|
635
|
font_metrics = QtGui.QFontMetrics(self.font)
|
|
635
|
font_metrics = QtGui.QFontMetrics(self.font)
|
|
636
|
displaywidth = max(5, (self.width() / font_metrics.width(' ')) - 1)
|
|
636
|
displaywidth = max(5, (self.width() / font_metrics.width(' ')) - 1)
|
|
637
|
|
|
637
|
|
|
638
|
# Some degenerate cases.
|
|
638
|
# Some degenerate cases.
|
|
639
|
size = len(items)
|
|
639
|
size = len(items)
|
|
640
|
if size == 0:
|
|
640
|
if size == 0:
|
|
641
|
return '\n'
|
|
641
|
return '\n'
|
|
642
|
elif size == 1:
|
|
642
|
elif size == 1:
|
|
643
|
return '%s\n' % str(items[0])
|
|
643
|
return '%s\n' % str(items[0])
|
|
644
|
|
|
644
|
|
|
645
|
# Try every row count from 1 upwards
|
|
645
|
# Try every row count from 1 upwards
|
|
646
|
array_index = lambda nrows, row, col: nrows*col + row
|
|
646
|
array_index = lambda nrows, row, col: nrows*col + row
|
|
647
|
for nrows in range(1, size):
|
|
647
|
for nrows in range(1, size):
|
|
648
|
ncols = (size + nrows - 1) // nrows
|
|
648
|
ncols = (size + nrows - 1) // nrows
|
|
649
|
colwidths = []
|
|
649
|
colwidths = []
|
|
650
|
totwidth = -len(separator)
|
|
650
|
totwidth = -len(separator)
|
|
651
|
for col in range(ncols):
|
|
651
|
for col in range(ncols):
|
|
652
|
# Get max column width for this column
|
|
652
|
# Get max column width for this column
|
|
653
|
colwidth = 0
|
|
653
|
colwidth = 0
|
|
654
|
for row in range(nrows):
|
|
654
|
for row in range(nrows):
|
|
655
|
i = array_index(nrows, row, col)
|
|
655
|
i = array_index(nrows, row, col)
|
|
656
|
if i >= size: break
|
|
656
|
if i >= size: break
|
|
657
|
x = items[i]
|
|
657
|
x = items[i]
|
|
658
|
colwidth = max(colwidth, len(x))
|
|
658
|
colwidth = max(colwidth, len(x))
|
|
659
|
colwidths.append(colwidth)
|
|
659
|
colwidths.append(colwidth)
|
|
660
|
totwidth += colwidth + len(separator)
|
|
660
|
totwidth += colwidth + len(separator)
|
|
661
|
if totwidth > displaywidth:
|
|
661
|
if totwidth > displaywidth:
|
|
662
|
break
|
|
662
|
break
|
|
663
|
if totwidth <= displaywidth:
|
|
663
|
if totwidth <= displaywidth:
|
|
664
|
break
|
|
664
|
break
|
|
665
|
|
|
665
|
|
|
666
|
# The smallest number of rows computed and the max widths for each
|
|
666
|
# The smallest number of rows computed and the max widths for each
|
|
667
|
# column has been obtained. Now we just have to format each of the rows.
|
|
667
|
# column has been obtained. Now we just have to format each of the rows.
|
|
668
|
string = ''
|
|
668
|
string = ''
|
|
669
|
for row in range(nrows):
|
|
669
|
for row in range(nrows):
|
|
670
|
texts = []
|
|
670
|
texts = []
|
|
671
|
for col in range(ncols):
|
|
671
|
for col in range(ncols):
|
|
672
|
i = row + nrows*col
|
|
672
|
i = row + nrows*col
|
|
673
|
if i >= size:
|
|
673
|
if i >= size:
|
|
674
|
texts.append('')
|
|
674
|
texts.append('')
|
|
675
|
else:
|
|
675
|
else:
|
|
676
|
texts.append(items[i])
|
|
676
|
texts.append(items[i])
|
|
677
|
while texts and not texts[-1]:
|
|
677
|
while texts and not texts[-1]:
|
|
678
|
del texts[-1]
|
|
678
|
del texts[-1]
|
|
679
|
for col in range(len(texts)):
|
|
679
|
for col in range(len(texts)):
|
|
680
|
texts[col] = texts[col].ljust(colwidths[col])
|
|
680
|
texts[col] = texts[col].ljust(colwidths[col])
|
|
681
|
string += '%s\n' % str(separator.join(texts))
|
|
681
|
string += '%s\n' % str(separator.join(texts))
|
|
682
|
return string
|
|
682
|
return string
|
|
683
|
|
|
683
|
|
|
684
|
def _get_block_plain_text(self, block):
|
|
684
|
def _get_block_plain_text(self, block):
|
|
685
|
""" Given a QTextBlock, return its unformatted text.
|
|
685
|
""" Given a QTextBlock, return its unformatted text.
|
|
686
|
"""
|
|
686
|
"""
|
|
687
|
cursor = QtGui.QTextCursor(block)
|
|
687
|
cursor = QtGui.QTextCursor(block)
|
|
688
|
cursor.movePosition(QtGui.QTextCursor.StartOfBlock)
|
|
688
|
cursor.movePosition(QtGui.QTextCursor.StartOfBlock)
|
|
689
|
cursor.movePosition(QtGui.QTextCursor.EndOfBlock,
|
|
689
|
cursor.movePosition(QtGui.QTextCursor.EndOfBlock,
|
|
690
|
QtGui.QTextCursor.KeepAnchor)
|
|
690
|
QtGui.QTextCursor.KeepAnchor)
|
|
691
|
return str(cursor.selection().toPlainText())
|
|
691
|
return str(cursor.selection().toPlainText())
|
|
692
|
|
|
692
|
|
|
693
|
def _get_cursor(self):
|
|
693
|
def _get_cursor(self):
|
|
694
|
""" Convenience method that returns a cursor for the current position.
|
|
694
|
""" Convenience method that returns a cursor for the current position.
|
|
695
|
"""
|
|
695
|
"""
|
|
696
|
return self._control.textCursor()
|
|
696
|
return self._control.textCursor()
|
|
697
|
|
|
697
|
|
|
698
|
def _get_end_cursor(self):
|
|
698
|
def _get_end_cursor(self):
|
|
699
|
""" Convenience method that returns a cursor for the last character.
|
|
699
|
""" Convenience method that returns a cursor for the last character.
|
|
700
|
"""
|
|
700
|
"""
|
|
701
|
cursor = self._control.textCursor()
|
|
701
|
cursor = self._control.textCursor()
|
|
702
|
cursor.movePosition(QtGui.QTextCursor.End)
|
|
702
|
cursor.movePosition(QtGui.QTextCursor.End)
|
|
703
|
return cursor
|
|
703
|
return cursor
|
|
704
|
|
|
704
|
|
|
705
|
def _get_input_buffer_cursor_line(self):
|
|
705
|
def _get_input_buffer_cursor_line(self):
|
|
706
|
""" The text in the line of the input buffer in which the user's cursor
|
|
706
|
""" The text in the line of the input buffer in which the user's cursor
|
|
707
|
rests. Returns a string if there is such a line; otherwise, None.
|
|
707
|
rests. Returns a string if there is such a line; otherwise, None.
|
|
708
|
"""
|
|
708
|
"""
|
|
709
|
if self._executing:
|
|
709
|
if self._executing:
|
|
710
|
return None
|
|
710
|
return None
|
|
711
|
cursor = self._control.textCursor()
|
|
711
|
cursor = self._control.textCursor()
|
|
712
|
if cursor.position() >= self._prompt_pos:
|
|
712
|
if cursor.position() >= self._prompt_pos:
|
|
713
|
text = self._get_block_plain_text(cursor.block())
|
|
713
|
text = self._get_block_plain_text(cursor.block())
|
|
714
|
if cursor.blockNumber() == self._get_prompt_cursor().blockNumber():
|
|
714
|
if cursor.blockNumber() == self._get_prompt_cursor().blockNumber():
|
|
715
|
return text[len(self._prompt):]
|
|
715
|
return text[len(self._prompt):]
|
|
716
|
else:
|
|
716
|
else:
|
|
717
|
return text[len(self._continuation_prompt):]
|
|
717
|
return text[len(self._continuation_prompt):]
|
|
718
|
else:
|
|
718
|
else:
|
|
719
|
return None
|
|
719
|
return None
|
|
720
|
|
|
720
|
|
|
721
|
def _get_prompt_cursor(self):
|
|
721
|
def _get_prompt_cursor(self):
|
|
722
|
""" Convenience method that returns a cursor for the prompt position.
|
|
722
|
""" Convenience method that returns a cursor for the prompt position.
|
|
723
|
"""
|
|
723
|
"""
|
|
724
|
cursor = self._control.textCursor()
|
|
724
|
cursor = self._control.textCursor()
|
|
725
|
cursor.setPosition(self._prompt_pos)
|
|
725
|
cursor.setPosition(self._prompt_pos)
|
|
726
|
return cursor
|
|
726
|
return cursor
|
|
727
|
|
|
727
|
|
|
728
|
def _get_selection_cursor(self, start, end):
|
|
728
|
def _get_selection_cursor(self, start, end):
|
|
729
|
""" Convenience method that returns a cursor with text selected between
|
|
729
|
""" Convenience method that returns a cursor with text selected between
|
|
730
|
the positions 'start' and 'end'.
|
|
730
|
the positions 'start' and 'end'.
|
|
731
|
"""
|
|
731
|
"""
|
|
732
|
cursor = self._control.textCursor()
|
|
732
|
cursor = self._control.textCursor()
|
|
733
|
cursor.setPosition(start)
|
|
733
|
cursor.setPosition(start)
|
|
734
|
cursor.setPosition(end, QtGui.QTextCursor.KeepAnchor)
|
|
734
|
cursor.setPosition(end, QtGui.QTextCursor.KeepAnchor)
|
|
735
|
return cursor
|
|
735
|
return cursor
|
|
736
|
|
|
736
|
|
|
737
|
def _get_word_start_cursor(self, position):
|
|
737
|
def _get_word_start_cursor(self, position):
|
|
738
|
""" Find the start of the word to the left the given position. If a
|
|
738
|
""" Find the start of the word to the left the given position. If a
|
|
739
|
sequence of non-word characters precedes the first word, skip over
|
|
739
|
sequence of non-word characters precedes the first word, skip over
|
|
740
|
them. (This emulates the behavior of bash, emacs, etc.)
|
|
740
|
them. (This emulates the behavior of bash, emacs, etc.)
|
|
741
|
"""
|
|
741
|
"""
|
|
742
|
document = self._control.document()
|
|
742
|
document = self._control.document()
|
|
743
|
position -= 1
|
|
743
|
position -= 1
|
|
744
|
while position >= self._prompt_pos and \
|
|
744
|
while position >= self._prompt_pos and \
|
|
745
|
not document.characterAt(position).isLetterOrNumber():
|
|
745
|
not document.characterAt(position).isLetterOrNumber():
|
|
746
|
position -= 1
|
|
746
|
position -= 1
|
|
747
|
while position >= self._prompt_pos and \
|
|
747
|
while position >= self._prompt_pos and \
|
|
748
|
document.characterAt(position).isLetterOrNumber():
|
|
748
|
document.characterAt(position).isLetterOrNumber():
|
|
749
|
position -= 1
|
|
749
|
position -= 1
|
|
750
|
cursor = self._control.textCursor()
|
|
750
|
cursor = self._control.textCursor()
|
|
751
|
cursor.setPosition(position + 1)
|
|
751
|
cursor.setPosition(position + 1)
|
|
752
|
return cursor
|
|
752
|
return cursor
|
|
753
|
|
|
753
|
|
|
754
|
def _get_word_end_cursor(self, position):
|
|
754
|
def _get_word_end_cursor(self, position):
|
|
755
|
""" Find the end of the word to the right the given position. If a
|
|
755
|
""" Find the end of the word to the right the given position. If a
|
|
756
|
sequence of non-word characters precedes the first word, skip over
|
|
756
|
sequence of non-word characters precedes the first word, skip over
|
|
757
|
them. (This emulates the behavior of bash, emacs, etc.)
|
|
757
|
them. (This emulates the behavior of bash, emacs, etc.)
|
|
758
|
"""
|
|
758
|
"""
|
|
759
|
document = self._control.document()
|
|
759
|
document = self._control.document()
|
|
760
|
end = self._get_end_cursor().position()
|
|
760
|
end = self._get_end_cursor().position()
|
|
761
|
while position < end and \
|
|
761
|
while position < end and \
|
|
762
|
not document.characterAt(position).isLetterOrNumber():
|
|
762
|
not document.characterAt(position).isLetterOrNumber():
|
|
763
|
position += 1
|
|
763
|
position += 1
|
|
764
|
while position < end and \
|
|
764
|
while position < end and \
|
|
765
|
document.characterAt(position).isLetterOrNumber():
|
|
765
|
document.characterAt(position).isLetterOrNumber():
|
|
766
|
position += 1
|
|
766
|
position += 1
|
|
767
|
cursor = self._control.textCursor()
|
|
767
|
cursor = self._control.textCursor()
|
|
768
|
cursor.setPosition(position)
|
|
768
|
cursor.setPosition(position)
|
|
769
|
return cursor
|
|
769
|
return cursor
|
|
770
|
|
|
770
|
|
|
771
|
def _insert_html(self, cursor, html):
|
|
771
|
def _insert_html(self, cursor, html):
|
|
772
|
""" Insert HTML using the specified cursor in such a way that future
|
|
772
|
""" Insert HTML using the specified cursor in such a way that future
|
|
773
|
formatting is unaffected.
|
|
773
|
formatting is unaffected.
|
|
774
|
"""
|
|
774
|
"""
|
|
775
|
cursor.beginEditBlock()
|
|
775
|
cursor.beginEditBlock()
|
|
776
|
cursor.insertHtml(html)
|
|
776
|
cursor.insertHtml(html)
|
|
777
|
|
|
777
|
|
|
778
|
# After inserting HTML, the text document "remembers" it's in "html
|
|
778
|
# After inserting HTML, the text document "remembers" it's in "html
|
|
779
|
# mode", which means that subsequent calls adding plain text will result
|
|
779
|
# mode", which means that subsequent calls adding plain text will result
|
|
780
|
# in unwanted formatting, lost tab characters, etc. The following code
|
|
780
|
# in unwanted formatting, lost tab characters, etc. The following code
|
|
781
|
# hacks around this behavior, which I consider to be a bug in Qt.
|
|
781
|
# hacks around this behavior, which I consider to be a bug in Qt.
|
|
782
|
cursor.movePosition(QtGui.QTextCursor.Left,
|
|
782
|
cursor.movePosition(QtGui.QTextCursor.Left,
|
|
783
|
QtGui.QTextCursor.KeepAnchor)
|
|
783
|
QtGui.QTextCursor.KeepAnchor)
|
|
784
|
if cursor.selection().toPlainText() == ' ':
|
|
784
|
if cursor.selection().toPlainText() == ' ':
|
|
785
|
cursor.removeSelectedText()
|
|
785
|
cursor.removeSelectedText()
|
|
786
|
cursor.movePosition(QtGui.QTextCursor.Right)
|
|
786
|
cursor.movePosition(QtGui.QTextCursor.Right)
|
|
787
|
cursor.insertText(' ', QtGui.QTextCharFormat())
|
|
787
|
cursor.insertText(' ', QtGui.QTextCharFormat())
|
|
788
|
cursor.endEditBlock()
|
|
788
|
cursor.endEditBlock()
|
|
789
|
|
|
789
|
|
|
790
|
def _insert_into_buffer(self, text):
|
|
790
|
def _insert_into_buffer(self, text):
|
|
791
|
""" Inserts text into the input buffer at the current cursor position,
|
|
791
|
""" Inserts text into the input buffer at the current cursor position,
|
|
792
|
ensuring that continuation prompts are inserted as necessary.
|
|
792
|
ensuring that continuation prompts are inserted as necessary.
|
|
793
|
"""
|
|
793
|
"""
|
|
794
|
lines = str(text).splitlines(True)
|
|
794
|
lines = str(text).splitlines(True)
|
|
795
|
if lines:
|
|
795
|
if lines:
|
|
796
|
self._keep_cursor_in_buffer()
|
|
796
|
self._keep_cursor_in_buffer()
|
|
797
|
cursor = self._control.textCursor()
|
|
797
|
cursor = self._control.textCursor()
|
|
798
|
cursor.beginEditBlock()
|
|
798
|
cursor.beginEditBlock()
|
|
799
|
cursor.insertText(lines[0])
|
|
799
|
cursor.insertText(lines[0])
|
|
800
|
for line in lines[1:]:
|
|
800
|
for line in lines[1:]:
|
|
801
|
if self._continuation_prompt_html is None:
|
|
801
|
if self._continuation_prompt_html is None:
|
|
802
|
cursor.insertText(self._continuation_prompt)
|
|
802
|
cursor.insertText(self._continuation_prompt)
|
|
803
|
else:
|
|
803
|
else:
|
|
804
|
self._insert_html(cursor, self._continuation_prompt_html)
|
|
804
|
self._insert_html(cursor, self._continuation_prompt_html)
|
|
805
|
cursor.insertText(line)
|
|
805
|
cursor.insertText(line)
|
|
806
|
cursor.endEditBlock()
|
|
806
|
cursor.endEditBlock()
|
|
807
|
self._control.setTextCursor(cursor)
|
|
807
|
self._control.setTextCursor(cursor)
|
|
808
|
|
|
808
|
|
|
809
|
def _in_buffer(self, position):
|
|
809
|
def _in_buffer(self, position):
|
|
810
|
""" Returns whether the given position is inside the editing region.
|
|
810
|
""" Returns whether the given position is inside the editing region.
|
|
811
|
"""
|
|
811
|
"""
|
|
812
|
cursor = self._control.textCursor()
|
|
812
|
cursor = self._control.textCursor()
|
|
813
|
cursor.setPosition(position)
|
|
813
|
cursor.setPosition(position)
|
|
814
|
line = cursor.blockNumber()
|
|
814
|
line = cursor.blockNumber()
|
|
815
|
prompt_line = self._get_prompt_cursor().blockNumber()
|
|
815
|
prompt_line = self._get_prompt_cursor().blockNumber()
|
|
816
|
if line == prompt_line:
|
|
816
|
if line == prompt_line:
|
|
817
|
return position >= self._prompt_pos
|
|
817
|
return position >= self._prompt_pos
|
|
818
|
elif line > prompt_line:
|
|
818
|
elif line > prompt_line:
|
|
819
|
cursor.movePosition(QtGui.QTextCursor.StartOfBlock)
|
|
819
|
cursor.movePosition(QtGui.QTextCursor.StartOfBlock)
|
|
820
|
prompt_pos = cursor.position() + len(self._continuation_prompt)
|
|
820
|
prompt_pos = cursor.position() + len(self._continuation_prompt)
|
|
821
|
return position >= prompt_pos
|
|
821
|
return position >= prompt_pos
|
|
822
|
return False
|
|
822
|
return False
|
|
823
|
|
|
823
|
|
|
824
|
def _keep_cursor_in_buffer(self):
|
|
824
|
def _keep_cursor_in_buffer(self):
|
|
825
|
""" Ensures that the cursor is inside the editing region. Returns
|
|
825
|
""" Ensures that the cursor is inside the editing region. Returns
|
|
826
|
whether the cursor was moved.
|
|
826
|
whether the cursor was moved.
|
|
827
|
"""
|
|
827
|
"""
|
|
828
|
cursor = self._control.textCursor()
|
|
828
|
cursor = self._control.textCursor()
|
|
829
|
if self._in_buffer(cursor.position()):
|
|
829
|
if self._in_buffer(cursor.position()):
|
|
830
|
return False
|
|
830
|
return False
|
|
831
|
else:
|
|
831
|
else:
|
|
832
|
cursor.movePosition(QtGui.QTextCursor.End)
|
|
832
|
cursor.movePosition(QtGui.QTextCursor.End)
|
|
833
|
self._control.setTextCursor(cursor)
|
|
833
|
self._control.setTextCursor(cursor)
|
|
834
|
return True
|
|
834
|
return True
|
|
835
|
|
|
835
|
|
|
836
|
def _prompt_started(self):
|
|
836
|
def _prompt_started(self):
|
|
837
|
""" Called immediately after a new prompt is displayed.
|
|
837
|
""" Called immediately after a new prompt is displayed.
|
|
838
|
"""
|
|
838
|
"""
|
|
839
|
# Temporarily disable the maximum block count to permit undo/redo and
|
|
839
|
# Temporarily disable the maximum block count to permit undo/redo and
|
|
840
|
# to ensure that the prompt position does not change due to truncation.
|
|
840
|
# to ensure that the prompt position does not change due to truncation.
|
|
841
|
self._control.document().setMaximumBlockCount(0)
|
|
841
|
self._control.document().setMaximumBlockCount(0)
|
|
842
|
self._control.setUndoRedoEnabled(True)
|
|
842
|
self._control.setUndoRedoEnabled(True)
|
|
843
|
|
|
843
|
|
|
844
|
self._control.setReadOnly(False)
|
|
844
|
self._control.setReadOnly(False)
|
|
845
|
self._control.moveCursor(QtGui.QTextCursor.End)
|
|
845
|
self._control.moveCursor(QtGui.QTextCursor.End)
|
|
846
|
|
|
846
|
|
|
847
|
self._executing = False
|
|
847
|
self._executing = False
|
|
848
|
self._prompt_started_hook()
|
|
848
|
self._prompt_started_hook()
|
|
849
|
|
|
849
|
|
|
850
|
def _prompt_finished(self):
|
|
850
|
def _prompt_finished(self):
|
|
851
|
""" Called immediately after a prompt is finished, i.e. when some input
|
|
851
|
""" Called immediately after a prompt is finished, i.e. when some input
|
|
852
|
will be processed and a new prompt displayed.
|
|
852
|
will be processed and a new prompt displayed.
|
|
853
|
"""
|
|
853
|
"""
|
|
854
|
self._control.setUndoRedoEnabled(False)
|
|
854
|
self._control.setUndoRedoEnabled(False)
|
|
855
|
self._control.setReadOnly(True)
|
|
855
|
self._control.setReadOnly(True)
|
|
856
|
self._prompt_finished_hook()
|
|
856
|
self._prompt_finished_hook()
|
|
857
|
|
|
857
|
|
|
858
|
def _readline(self, prompt='', callback=None):
|
|
858
|
def _readline(self, prompt='', callback=None):
|
|
859
|
""" Reads one line of input from the user.
|
|
859
|
""" Reads one line of input from the user.
|
|
860
|
|
|
860
|
|
|
861
|
Parameters
|
|
861
|
Parameters
|
|
862
|
----------
|
|
862
|
----------
|
|
863
|
prompt : str, optional
|
|
863
|
prompt : str, optional
|
|
864
|
The prompt to print before reading the line.
|
|
864
|
The prompt to print before reading the line.
|
|
865
|
|
|
865
|
|
|
866
|
callback : callable, optional
|
|
866
|
callback : callable, optional
|
|
867
|
A callback to execute with the read line. If not specified, input is
|
|
867
|
A callback to execute with the read line. If not specified, input is
|
|
868
|
read *synchronously* and this method does not return until it has
|
|
868
|
read *synchronously* and this method does not return until it has
|
|
869
|
been read.
|
|
869
|
been read.
|
|
870
|
|
|
870
|
|
|
871
|
Returns
|
|
871
|
Returns
|
|
872
|
-------
|
|
872
|
-------
|
|
873
|
If a callback is specified, returns nothing. Otherwise, returns the
|
|
873
|
If a callback is specified, returns nothing. Otherwise, returns the
|
|
874
|
input string with the trailing newline stripped.
|
|
874
|
input string with the trailing newline stripped.
|
|
875
|
"""
|
|
875
|
"""
|
|
876
|
if self._reading:
|
|
876
|
if self._reading:
|
|
877
|
raise RuntimeError('Cannot read a line. Widget is already reading.')
|
|
877
|
raise RuntimeError('Cannot read a line. Widget is already reading.')
|
|
878
|
|
|
878
|
|
|
879
|
if not callback and not self.isVisible():
|
|
879
|
if not callback and not self.isVisible():
|
|
880
|
# If the user cannot see the widget, this function cannot return.
|
|
880
|
# If the user cannot see the widget, this function cannot return.
|
|
881
|
raise RuntimeError('Cannot synchronously read a line if the widget'
|
|
881
|
raise RuntimeError('Cannot synchronously read a line if the widget'
|
|
882
|
'is not visible!')
|
|
882
|
'is not visible!')
|
|
883
|
|
|
883
|
|
|
884
|
self._reading = True
|
|
884
|
self._reading = True
|
|
885
|
self._show_prompt(prompt, newline=False)
|
|
885
|
self._show_prompt(prompt, newline=False)
|
|
886
|
|
|
886
|
|
|
887
|
if callback is None:
|
|
887
|
if callback is None:
|
|
888
|
self._reading_callback = None
|
|
888
|
self._reading_callback = None
|
|
889
|
while self._reading:
|
|
889
|
while self._reading:
|
|
890
|
QtCore.QCoreApplication.processEvents()
|
|
890
|
QtCore.QCoreApplication.processEvents()
|
|
891
|
return self.input_buffer.rstrip('\n')
|
|
891
|
return self.input_buffer.rstrip('\n')
|
|
892
|
|
|
892
|
|
|
893
|
else:
|
|
893
|
else:
|
|
894
|
self._reading_callback = lambda: \
|
|
894
|
self._reading_callback = lambda: \
|
|
895
|
callback(self.input_buffer.rstrip('\n'))
|
|
895
|
callback(self.input_buffer.rstrip('\n'))
|
|
896
|
|
|
896
|
|
|
897
|
def _reset(self):
|
|
897
|
def _reset(self):
|
|
898
|
""" Clears the console and resets internal state variables.
|
|
898
|
""" Clears the console and resets internal state variables.
|
|
899
|
"""
|
|
899
|
"""
|
|
900
|
self._control.clear()
|
|
900
|
self._control.clear()
|
|
901
|
self._executing = self._reading = False
|
|
901
|
self._executing = self._reading = False
|
|
902
|
|
|
902
|
|
|
903
|
def _set_continuation_prompt(self, prompt, html=False):
|
|
903
|
def _set_continuation_prompt(self, prompt, html=False):
|
|
904
|
""" Sets the continuation prompt.
|
|
904
|
""" Sets the continuation prompt.
|
|
905
|
|
|
905
|
|
|
906
|
Parameters
|
|
906
|
Parameters
|
|
907
|
----------
|
|
907
|
----------
|
|
908
|
prompt : str
|
|
908
|
prompt : str
|
|
909
|
The prompt to show when more input is needed.
|
|
909
|
The prompt to show when more input is needed.
|
|
910
|
|
|
910
|
|
|
911
|
html : bool, optional (default False)
|
|
911
|
html : bool, optional (default False)
|
|
912
|
If set, the prompt will be inserted as formatted HTML. Otherwise,
|
|
912
|
If set, the prompt will be inserted as formatted HTML. Otherwise,
|
|
913
|
the prompt will be treated as plain text, though ANSI color codes
|
|
913
|
the prompt will be treated as plain text, though ANSI color codes
|
|
914
|
will be handled.
|
|
914
|
will be handled.
|
|
915
|
"""
|
|
915
|
"""
|
|
916
|
if html:
|
|
916
|
if html:
|
|
917
|
self._continuation_prompt_html = prompt
|
|
917
|
self._continuation_prompt_html = prompt
|
|
918
|
else:
|
|
918
|
else:
|
|
919
|
self._continuation_prompt = prompt
|
|
919
|
self._continuation_prompt = prompt
|
|
920
|
self._continuation_prompt_html = None
|
|
920
|
self._continuation_prompt_html = None
|
|
921
|
|
|
921
|
|
|
922
|
def _set_cursor(self, cursor):
|
|
922
|
def _set_cursor(self, cursor):
|
|
923
|
""" Convenience method to set the current cursor.
|
|
923
|
""" Convenience method to set the current cursor.
|
|
924
|
"""
|
|
924
|
"""
|
|
925
|
self._control.setTextCursor(cursor)
|
|
925
|
self._control.setTextCursor(cursor)
|
|
926
|
|
|
926
|
|
|
927
|
def _set_position(self, position):
|
|
927
|
def _set_position(self, position):
|
|
928
|
""" Convenience method to set the position of the cursor.
|
|
928
|
""" Convenience method to set the position of the cursor.
|
|
929
|
"""
|
|
929
|
"""
|
|
930
|
cursor = self._control.textCursor()
|
|
930
|
cursor = self._control.textCursor()
|
|
931
|
cursor.setPosition(position)
|
|
931
|
cursor.setPosition(position)
|
|
932
|
self._control.setTextCursor(cursor)
|
|
932
|
self._control.setTextCursor(cursor)
|
|
933
|
|
|
933
|
|
|
934
|
def _set_selection(self, start, end):
|
|
934
|
def _set_selection(self, start, end):
|
|
935
|
""" Convenience method to set the current selected text.
|
|
935
|
""" Convenience method to set the current selected text.
|
|
936
|
"""
|
|
936
|
"""
|
|
937
|
self._control.setTextCursor(self._get_selection_cursor(start, end))
|
|
937
|
self._control.setTextCursor(self._get_selection_cursor(start, end))
|
|
938
|
|
|
938
|
|
|
939
|
def _show_context_menu(self, pos):
|
|
939
|
def _show_context_menu(self, pos):
|
|
940
|
""" Shows a context menu at the given QPoint (in widget coordinates).
|
|
940
|
""" Shows a context menu at the given QPoint (in widget coordinates).
|
|
941
|
"""
|
|
941
|
"""
|
|
942
|
menu = QtGui.QMenu()
|
|
942
|
menu = QtGui.QMenu()
|
|
943
|
|
|
943
|
|
|
944
|
copy_action = QtGui.QAction('Copy', menu)
|
|
944
|
copy_action = menu.addAction('Copy', self.copy)
|
|
945
|
copy_action.triggered.connect(self.copy)
|
|
|
|
|
946
|
copy_action.setEnabled(self._get_cursor().hasSelection())
|
|
945
|
copy_action.setEnabled(self._get_cursor().hasSelection())
|
|
947
|
copy_action.setShortcut(QtGui.QKeySequence.Copy)
|
|
946
|
copy_action.setShortcut(QtGui.QKeySequence.Copy)
|
|
948
|
menu.addAction(copy_action)
|
|
|
|
|
949
|
|
|
947
|
|
|
950
|
paste_action = QtGui.QAction('Paste', menu)
|
|
948
|
paste_action = menu.addAction('Paste', self.paste)
|
|
951
|
paste_action.triggered.connect(self.paste)
|
|
|
|
|
952
|
paste_action.setEnabled(self.can_paste())
|
|
949
|
paste_action.setEnabled(self.can_paste())
|
|
953
|
paste_action.setShortcut(QtGui.QKeySequence.Paste)
|
|
950
|
paste_action.setShortcut(QtGui.QKeySequence.Paste)
|
|
954
|
menu.addAction(paste_action)
|
|
|
|
|
955
|
menu.addSeparator()
|
|
|
|
|
956
|
|
|
951
|
|
|
957
|
select_all_action = QtGui.QAction('Select All', menu)
|
|
952
|
menu.addSeparator()
|
|
958
|
select_all_action.triggered.connect(self.select_all)
|
|
953
|
menu.addAction('Select All', self.select_all)
|
|
959
|
menu.addAction(select_all_action)
|
|
|
|
|
960
|
|
|
954
|
|
|
961
|
menu.exec_(self._control.mapToGlobal(pos))
|
|
955
|
menu.exec_(self._control.mapToGlobal(pos))
|
|
962
|
|
|
956
|
|
|
963
|
def _show_prompt(self, prompt=None, html=False, newline=True):
|
|
957
|
def _show_prompt(self, prompt=None, html=False, newline=True):
|
|
964
|
""" Writes a new prompt at the end of the buffer.
|
|
958
|
""" Writes a new prompt at the end of the buffer.
|
|
965
|
|
|
959
|
|
|
966
|
Parameters
|
|
960
|
Parameters
|
|
967
|
----------
|
|
961
|
----------
|
|
968
|
prompt : str, optional
|
|
962
|
prompt : str, optional
|
|
969
|
The prompt to show. If not specified, the previous prompt is used.
|
|
963
|
The prompt to show. If not specified, the previous prompt is used.
|
|
970
|
|
|
964
|
|
|
971
|
html : bool, optional (default False)
|
|
965
|
html : bool, optional (default False)
|
|
972
|
Only relevant when a prompt is specified. If set, the prompt will
|
|
966
|
Only relevant when a prompt is specified. If set, the prompt will
|
|
973
|
be inserted as formatted HTML. Otherwise, the prompt will be treated
|
|
967
|
be inserted as formatted HTML. Otherwise, the prompt will be treated
|
|
974
|
as plain text, though ANSI color codes will be handled.
|
|
968
|
as plain text, though ANSI color codes will be handled.
|
|
975
|
|
|
969
|
|
|
976
|
newline : bool, optional (default True)
|
|
970
|
newline : bool, optional (default True)
|
|
977
|
If set, a new line will be written before showing the prompt if
|
|
971
|
If set, a new line will be written before showing the prompt if
|
|
978
|
there is not already a newline at the end of the buffer.
|
|
972
|
there is not already a newline at the end of the buffer.
|
|
979
|
"""
|
|
973
|
"""
|
|
980
|
# Insert a preliminary newline, if necessary.
|
|
974
|
# Insert a preliminary newline, if necessary.
|
|
981
|
if newline:
|
|
975
|
if newline:
|
|
982
|
cursor = self._get_end_cursor()
|
|
976
|
cursor = self._get_end_cursor()
|
|
983
|
if cursor.position() > 0:
|
|
977
|
if cursor.position() > 0:
|
|
984
|
cursor.movePosition(QtGui.QTextCursor.Left,
|
|
978
|
cursor.movePosition(QtGui.QTextCursor.Left,
|
|
985
|
QtGui.QTextCursor.KeepAnchor)
|
|
979
|
QtGui.QTextCursor.KeepAnchor)
|
|
986
|
if str(cursor.selection().toPlainText()) != '\n':
|
|
980
|
if str(cursor.selection().toPlainText()) != '\n':
|
|
987
|
self._append_plain_text('\n')
|
|
981
|
self._append_plain_text('\n')
|
|
988
|
|
|
982
|
|
|
989
|
# Write the prompt.
|
|
983
|
# Write the prompt.
|
|
990
|
if prompt is None:
|
|
984
|
if prompt is None:
|
|
991
|
if self._prompt_html is None:
|
|
985
|
if self._prompt_html is None:
|
|
992
|
self._append_plain_text(self._prompt)
|
|
986
|
self._append_plain_text(self._prompt)
|
|
993
|
else:
|
|
987
|
else:
|
|
994
|
self._append_html(self._prompt_html)
|
|
988
|
self._append_html(self._prompt_html)
|
|
995
|
else:
|
|
989
|
else:
|
|
996
|
if html:
|
|
990
|
if html:
|
|
997
|
self._prompt = self._append_html_fetching_plain_text(prompt)
|
|
991
|
self._prompt = self._append_html_fetching_plain_text(prompt)
|
|
998
|
self._prompt_html = prompt
|
|
992
|
self._prompt_html = prompt
|
|
999
|
else:
|
|
993
|
else:
|
|
1000
|
self._append_plain_text(prompt)
|
|
994
|
self._append_plain_text(prompt)
|
|
1001
|
self._prompt = prompt
|
|
995
|
self._prompt = prompt
|
|
1002
|
self._prompt_html = None
|
|
996
|
self._prompt_html = None
|
|
1003
|
|
|
997
|
|
|
1004
|
self._prompt_pos = self._get_end_cursor().position()
|
|
998
|
self._prompt_pos = self._get_end_cursor().position()
|
|
1005
|
self._prompt_started()
|
|
999
|
self._prompt_started()
|
|
1006
|
|
|
1000
|
|
|
1007
|
def _show_continuation_prompt(self):
|
|
1001
|
def _show_continuation_prompt(self):
|
|
1008
|
""" Writes a new continuation prompt at the end of the buffer.
|
|
1002
|
""" Writes a new continuation prompt at the end of the buffer.
|
|
1009
|
"""
|
|
1003
|
"""
|
|
1010
|
if self._continuation_prompt_html is None:
|
|
1004
|
if self._continuation_prompt_html is None:
|
|
1011
|
self._append_plain_text(self._continuation_prompt)
|
|
1005
|
self._append_plain_text(self._continuation_prompt)
|
|
1012
|
else:
|
|
1006
|
else:
|
|
1013
|
self._continuation_prompt = self._append_html_fetching_plain_text(
|
|
1007
|
self._continuation_prompt = self._append_html_fetching_plain_text(
|
|
1014
|
self._continuation_prompt_html)
|
|
1008
|
self._continuation_prompt_html)
|
|
1015
|
|
|
1009
|
|
|
1016
|
self._prompt_started()
|
|
1010
|
self._prompt_started()
|
|
1017
|
|
|
1011
|
|
|
1018
|
|
|
1012
|
|
|
1019
|
class HistoryConsoleWidget(ConsoleWidget):
|
|
1013
|
class HistoryConsoleWidget(ConsoleWidget):
|
|
1020
|
""" A ConsoleWidget that keeps a history of the commands that have been
|
|
1014
|
""" A ConsoleWidget that keeps a history of the commands that have been
|
|
1021
|
executed.
|
|
1015
|
executed.
|
|
1022
|
"""
|
|
1016
|
"""
|
|
1023
|
|
|
1017
|
|
|
1024
|
#---------------------------------------------------------------------------
|
|
1018
|
#---------------------------------------------------------------------------
|
|
1025
|
# 'object' interface
|
|
1019
|
# 'object' interface
|
|
1026
|
#---------------------------------------------------------------------------
|
|
1020
|
#---------------------------------------------------------------------------
|
|
1027
|
|
|
1021
|
|
|
1028
|
def __init__(self, *args, **kw):
|
|
1022
|
def __init__(self, *args, **kw):
|
|
1029
|
super(HistoryConsoleWidget, self).__init__(*args, **kw)
|
|
1023
|
super(HistoryConsoleWidget, self).__init__(*args, **kw)
|
|
1030
|
self._history = []
|
|
1024
|
self._history = []
|
|
1031
|
self._history_index = 0
|
|
1025
|
self._history_index = 0
|
|
1032
|
|
|
1026
|
|
|
1033
|
#---------------------------------------------------------------------------
|
|
1027
|
#---------------------------------------------------------------------------
|
|
1034
|
# 'ConsoleWidget' public interface
|
|
1028
|
# 'ConsoleWidget' public interface
|
|
1035
|
#---------------------------------------------------------------------------
|
|
1029
|
#---------------------------------------------------------------------------
|
|
1036
|
|
|
1030
|
|
|
1037
|
def execute(self, source=None, hidden=False, interactive=False):
|
|
1031
|
def execute(self, source=None, hidden=False, interactive=False):
|
|
1038
|
""" Reimplemented to the store history.
|
|
1032
|
""" Reimplemented to the store history.
|
|
1039
|
"""
|
|
1033
|
"""
|
|
1040
|
if not hidden:
|
|
1034
|
if not hidden:
|
|
1041
|
history = self.input_buffer if source is None else source
|
|
1035
|
history = self.input_buffer if source is None else source
|
|
1042
|
|
|
1036
|
|
|
1043
|
executed = super(HistoryConsoleWidget, self).execute(
|
|
1037
|
executed = super(HistoryConsoleWidget, self).execute(
|
|
1044
|
source, hidden, interactive)
|
|
1038
|
source, hidden, interactive)
|
|
1045
|
|
|
1039
|
|
|
1046
|
if executed and not hidden:
|
|
1040
|
if executed and not hidden:
|
|
1047
|
self._history.append(history.rstrip())
|
|
1041
|
self._history.append(history.rstrip())
|
|
1048
|
self._history_index = len(self._history)
|
|
1042
|
self._history_index = len(self._history)
|
|
1049
|
|
|
1043
|
|
|
1050
|
return executed
|
|
1044
|
return executed
|
|
1051
|
|
|
1045
|
|
|
1052
|
#---------------------------------------------------------------------------
|
|
1046
|
#---------------------------------------------------------------------------
|
|
1053
|
# 'ConsoleWidget' abstract interface
|
|
1047
|
# 'ConsoleWidget' abstract interface
|
|
1054
|
#---------------------------------------------------------------------------
|
|
1048
|
#---------------------------------------------------------------------------
|
|
1055
|
|
|
1049
|
|
|
1056
|
def _up_pressed(self):
|
|
1050
|
def _up_pressed(self):
|
|
1057
|
""" Called when the up key is pressed. Returns whether to continue
|
|
1051
|
""" Called when the up key is pressed. Returns whether to continue
|
|
1058
|
processing the event.
|
|
1052
|
processing the event.
|
|
1059
|
"""
|
|
1053
|
"""
|
|
1060
|
prompt_cursor = self._get_prompt_cursor()
|
|
1054
|
prompt_cursor = self._get_prompt_cursor()
|
|
1061
|
if self._get_cursor().blockNumber() == prompt_cursor.blockNumber():
|
|
1055
|
if self._get_cursor().blockNumber() == prompt_cursor.blockNumber():
|
|
1062
|
self.history_previous()
|
|
1056
|
self.history_previous()
|
|
1063
|
|
|
1057
|
|
|
1064
|
# Go to the first line of prompt for seemless history scrolling.
|
|
1058
|
# Go to the first line of prompt for seemless history scrolling.
|
|
1065
|
cursor = self._get_prompt_cursor()
|
|
1059
|
cursor = self._get_prompt_cursor()
|
|
1066
|
cursor.movePosition(QtGui.QTextCursor.EndOfLine)
|
|
1060
|
cursor.movePosition(QtGui.QTextCursor.EndOfLine)
|
|
1067
|
self._set_cursor(cursor)
|
|
1061
|
self._set_cursor(cursor)
|
|
1068
|
|
|
1062
|
|
|
1069
|
return False
|
|
1063
|
return False
|
|
1070
|
return True
|
|
1064
|
return True
|
|
1071
|
|
|
1065
|
|
|
1072
|
def _down_pressed(self):
|
|
1066
|
def _down_pressed(self):
|
|
1073
|
""" Called when the down key is pressed. Returns whether to continue
|
|
1067
|
""" Called when the down key is pressed. Returns whether to continue
|
|
1074
|
processing the event.
|
|
1068
|
processing the event.
|
|
1075
|
"""
|
|
1069
|
"""
|
|
1076
|
end_cursor = self._get_end_cursor()
|
|
1070
|
end_cursor = self._get_end_cursor()
|
|
1077
|
if self._get_cursor().blockNumber() == end_cursor.blockNumber():
|
|
1071
|
if self._get_cursor().blockNumber() == end_cursor.blockNumber():
|
|
1078
|
self.history_next()
|
|
1072
|
self.history_next()
|
|
1079
|
return False
|
|
1073
|
return False
|
|
1080
|
return True
|
|
1074
|
return True
|
|
1081
|
|
|
1075
|
|
|
1082
|
#---------------------------------------------------------------------------
|
|
1076
|
#---------------------------------------------------------------------------
|
|
1083
|
# 'HistoryConsoleWidget' interface
|
|
1077
|
# 'HistoryConsoleWidget' interface
|
|
1084
|
#---------------------------------------------------------------------------
|
|
1078
|
#---------------------------------------------------------------------------
|
|
1085
|
|
|
1079
|
|
|
1086
|
def history_previous(self):
|
|
1080
|
def history_previous(self):
|
|
1087
|
""" If possible, set the input buffer to the previous item in the
|
|
1081
|
""" If possible, set the input buffer to the previous item in the
|
|
1088
|
history.
|
|
1082
|
history.
|
|
1089
|
"""
|
|
1083
|
"""
|
|
1090
|
if self._history_index > 0:
|
|
1084
|
if self._history_index > 0:
|
|
1091
|
self._history_index -= 1
|
|
1085
|
self._history_index -= 1
|
|
1092
|
self.input_buffer = self._history[self._history_index]
|
|
1086
|
self.input_buffer = self._history[self._history_index]
|
|
1093
|
|
|
1087
|
|
|
1094
|
def history_next(self):
|
|
1088
|
def history_next(self):
|
|
1095
|
""" Set the input buffer to the next item in the history, or a blank
|
|
1089
|
""" Set the input buffer to the next item in the history, or a blank
|
|
1096
|
line if there is no subsequent item.
|
|
1090
|
line if there is no subsequent item.
|
|
1097
|
"""
|
|
1091
|
"""
|
|
1098
|
if self._history_index < len(self._history):
|
|
1092
|
if self._history_index < len(self._history):
|
|
1099
|
self._history_index += 1
|
|
1093
|
self._history_index += 1
|
|
1100
|
if self._history_index < len(self._history):
|
|
1094
|
if self._history_index < len(self._history):
|
|
1101
|
self.input_buffer = self._history[self._history_index]
|
|
1095
|
self.input_buffer = self._history[self._history_index]
|
|
1102
|
else:
|
|
1096
|
else:
|
|
1103
|
self.input_buffer = ''
|
|
1097
|
self.input_buffer = ''
|