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PI_MiniPython.py
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PI_MiniPython.py
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import traceback
import re
import sys
import io
import os
import webbrowser
import contextlib
import codeop
from XPPython3.utils import paste
from XPPython3 import xp
from XPPython3.XPListBox import XPCreateListBox, Prop
# Change log
# v2.1 * Fixed scroll position of textWidget: on long input, we didn't reset left-most scroll position
# * Automatically store and restore 'history'... To maintain sanity, maximum lines restored is Max_History
# * Also, on input, we _always_ scroll to the bottom (you can scroll up, but as input is added, we'll
# scroll back to the bottom.
Max_History = 20 # read in this number of (unique) previous command history on startup.
History_Filename = 'minipython_history.txt'
class IncompleteError(Exception):
pass
class PythonInterface:
def __init__(self):
self.historyIdx = -1
self.partialCommand = []
self.prevCommands = None
self.widget1 = None
self.textWidget = None
self.doButton = None
self.helpButton = None
self.popOutButton = None
self.listboxWidget = None
self.toggleCommandRef = None
self.menuIdx = None
self.popout = False
def XPluginStart(self):
self.toggleCommandRef = xp.createCommand('xppython3/mini-python/toggle', 'Toggle Mini-Python window')
xp.registerCommandHandler(self.toggleCommandRef, self.toggleCommand, 1, None)
self.menuIdx = xp.appendMenuItemWithCommand(xp.findPluginsMenu(), 'Mini Python', self.toggleCommandRef)
self.prevCommands = []
try:
filename = os.path.join(os.path.dirname(xp.getPrefsPath()), History_Filename)
with open(filename, 'r', encoding='utf-8') as fp:
for line in fp.readlines():
if line.startswith('>>> exit()') or line == '>>> \n':
continue
# comment out.... Actually, it's best to store all commands, not just "unique", at least until
# we can Search back previous commands...
# if line[0:-1] not in self.prevCommands:
# self.prevCommands.append(line[0:-1])
self.prevCommands = self.prevCommands[-Max_History:]
except OSError:
pass
self.prevCommands.append('>>> ')
return ('Mini Python Interpreter v2.1',
'xppython3.minipython',
'For debugging / testing: provides a mini python interpreter')
def resizePopup(self):
# resizes to fit
win = xp.getWidgetUnderlyingWindow(self.widget1)
if xp.windowIsPoppedOut(win):
(leftWin, topWin, rightWin, bottomWin) = xp.getWindowGeometryOS(win)
elif xp.windowIsInVR(win):
(widthWin, heightWin) = xp.getWindowGeometryVR(win)
(leftWin, topWin, rightWin, bottomWin) = (0, heightWin, widthWin, 0)
else:
(leftWin, topWin, rightWin, bottomWin) = xp.getWindowGeometry(win)
(listLeft, _listTop, _listRight, listBottom) = xp.getWidgetGeometry(self.listboxWidget.widgetID)
newLeft = listLeft
newTop = listBottom + topWin - bottomWin - 100
newRight = listLeft + rightWin - leftWin - 10
newBottom = listBottom
xp.setWidgetGeometry(self.listboxWidget.widgetID, newLeft, newTop, newRight, newBottom)
_fontWidth, fontHeight, _other = xp.getFontDimensions(xp.Font_Basic)
listbox_item_height = int(fontHeight * 1.2)
numVisible = int((newTop - newBottom) / listbox_item_height)
xp.setWidgetProperty(self.listboxWidget.widgetID, Prop.ListBoxMaxListBoxItems, numVisible)
(left, top, _right, bottom) = xp.getWidgetGeometry(self.textWidget)
xp.setWidgetGeometry(self.textWidget, left, top, newRight - 20, bottom)
def createPopup(self, windowLeft=100, windowTop=500, windowWidth=600, windowHeight=390, popout=False):
_width, height, _ignored = xp.getFontDimensions(xp.Font_Basic)
self.widget1 = xp.createWidget(windowLeft, windowTop, windowLeft + windowWidth, windowTop - windowHeight, 0,
"Mini Python Interpreter", 1, 0, xp.WidgetClass_MainWindow)
self.popout = popout
row = windowTop - 25
self.listboxWidget = XPCreateListBox(windowLeft + 10,
row,
windowLeft + windowWidth,
row - 295,
1, self.widget1)
row = row - 295
self.textWidget = xp.createWidget(windowLeft + 10,
row,
windowLeft + windowWidth - 20,
row - 20, 1,
self.prevCommands[-1], 0, self.widget1, xp.WidgetClass_TextField)
row = row - 20
self.doButton = xp.createWidget(110, row - 20, 150, row - 40, 1, "Do", 0, self.widget1, xp.WidgetClass_Button)
self.helpButton = xp.createWidget(590, row - 20, 630, row - 40, 1, "Help", 0, self.widget1, xp.WidgetClass_Button)
self.popOutButton = xp.createWidget(640, row - 20, 685, row - 40, 1, "Pop ➚", 0, self.widget1, xp.WidgetClass_Button)
xp.setWidgetProperty(self.popOutButton, xp.Property_ButtonType, xp.PushButton)
xp.setWidgetProperty(self.popOutButton, xp.Property_ButtonBehavior, xp.ButtonBehaviorPushButton)
col1 = 160
col2 = 350
col3 = 470
xp.createWidget(col1, row, 480, row - height, 1,
'^A ^E: Beginning / End of line', 0, self.widget1, xp.WidgetClass_Caption)
xp.createWidget(col2, row, 480, row - height, 1,
'^D: Delete char', 0, self.widget1, xp.WidgetClass_Caption)
xp.createWidget(col3, row, col3 + 100, row - height, 1,
'<Return>: Execute line', 0, self.widget1, xp.WidgetClass_Caption)
row -= height + 4
xp.createWidget(col1, row, 480, row - height, 1,
'^N ^P: Next / Previous line', 0, self.widget1, xp.WidgetClass_Caption)
xp.createWidget(col2, row, 480, row - height, 1,
'^K: Kill to EOL', 0, self.widget1, xp.WidgetClass_Caption)
row -= height + 4
xp.createWidget(col1, row, 480, row - height, 1,
'^F ^B: Move Forward / Back', 0, self.widget1, xp.WidgetClass_Caption)
xp.createWidget(col2, row, 480, row - height, 1,
'^V: Paste from clipboard', 0, self.widget1, xp.WidgetClass_Caption)
xp.setWidgetProperty(self.doButton, xp.Property_ButtonType, xp.PushButton)
xp.setWidgetProperty(self.doButton, xp.Property_ButtonBehavior, xp.ButtonBehaviorPushButton)
xp.setWidgetProperty(self.helpButton, xp.Property_ButtonType, xp.PushButton)
xp.setWidgetProperty(self.helpButton, xp.Property_ButtonBehavior, xp.ButtonBehaviorPushButton)
xp.setWidgetProperty(self.widget1, xp.Property_MainWindowHasCloseBoxes, 1)
xp.addWidgetCallback(self.widget1, self.widgetMsgs)
xp.addWidgetCallback(self.textWidget, self.textEdit)
def textEdit(self, message, widgetID, param1, _param2):
if widgetID != self.textWidget:
xp.log(f"got textEdit callback but not for correct widget: {widgetID}")
return 0
# Normally, most key presses (of printable keys) is handled by the TextField widget
# Here, we want to intercept the keypress _first_
if message == xp.Msg_KeyPress and not param1[1] & xp.UpFlag:
ignoreFirst = 4
if param1[1] & xp.ControlFlag:
if param1[2] == xp.VK_K:
start = xp.getWidgetProperty(widgetID, xp.Property_EditFieldSelStart, None)
xp.setWidgetDescriptor(widgetID, xp.getWidgetDescriptor(widgetID)[0:start])
return 1
elif param1[2] == xp.VK_F:
numChars = len(xp.getWidgetDescriptor(widgetID))
start = min(numChars, xp.getWidgetProperty(widgetID, xp.Property_EditFieldSelStart, None) + 1)
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelStart, start)
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelEnd, start)
return 1
elif param1[2] == xp.VK_A:
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelStart, ignoreFirst)
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelEnd, ignoreFirst)
return 1
elif param1[2] == xp.VK_E:
numChars = len(xp.getWidgetDescriptor(widgetID))
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelStart, numChars)
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelEnd, numChars)
return 1
elif param1[2] == xp.VK_V:
self.paste()
return 1
if param1[2] == xp.VK_DELETE or (param1[2] == xp.VK_D and param1[1] & xp.ControlFlag):
start = xp.getWidgetProperty(widgetID, xp.Property_EditFieldSelStart, None)
text = xp.getWidgetDescriptor(widgetID)
xp.setWidgetDescriptor(widgetID, text[0:start] + text[start + 1:])
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelStart, start)
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelEnd, start)
return 1
if param1[2] == xp.VK_BACK:
if ignoreFirst == xp.getWidgetProperty(widgetID, xp.Property_EditFieldSelStart, None):
return 1
start = max(ignoreFirst, xp.getWidgetProperty(widgetID, xp.Property_EditFieldSelStart, None) - 1)
text = xp.getWidgetDescriptor(widgetID)
xp.setWidgetDescriptor(widgetID, text[0:start] + text[start + 1:])
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelStart, start)
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelEnd, start)
return 1
if param1[2] == xp.VK_LEFT or (param1[2] == xp.VK_B and param1[1] & xp.ControlFlag):
start = max(ignoreFirst, xp.getWidgetProperty(widgetID, xp.Property_EditFieldSelStart, None) - 1)
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelStart, start)
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelEnd, start)
return 1
if param1[2] == xp.VK_DOWN or (param1[2] == xp.VK_N and param1[1] & xp.ControlFlag):
self.historyIdx = (self.historyIdx + 1) % len(self.prevCommands)
xp.setWidgetDescriptor(widgetID, self.prevCommands[self.historyIdx])
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelStart, len(xp.getWidgetDescriptor(widgetID)))
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelEnd, len(xp.getWidgetDescriptor(widgetID)))
return 1
if param1[2] == xp.VK_UP or (param1[2] == xp.VK_P and param1[1] & xp.ControlFlag):
xp.setWidgetDescriptor(widgetID, self.prevCommands[self.historyIdx])
self.historyIdx = (self.historyIdx - 1) % len(self.prevCommands)
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelStart, len(xp.getWidgetDescriptor(widgetID)))
xp.setWidgetProperty(widgetID, xp.Property_EditFieldSelEnd, len(xp.getWidgetDescriptor(widgetID)))
return 1
return 0
def widgetMsgs(self, message, widgetID, param1, param2):
if widgetID != self.widget1:
xp.log(f"got widgetMsg callback but not for correct widget: {widgetID}")
return 0
if message == xp.Msg_Reshape:
# -- regenerate widgets and repopulate with data...
if param2[2] != 0 or param2[3] != 0:
self.resizePopup()
return 1
if message == xp.Message_CloseButtonPushed:
xp.hideWidget(self.widget1)
return 1
if message == xp.Msg_PushButtonPressed and param1 == self.popOutButton:
win = xp.getWidgetUnderlyingWindow(self.widget1)
if self.popout:
xp.setWindowPositioningMode(win, xp.WindowPositionFree, 1)
xp.setWidgetDescriptor(self.popOutButton, "Pop ➚")
else:
xp.setWindowPositioningMode(win, xp.WindowPopOut, 1)
xp.setWidgetDescriptor(self.popOutButton, "Dock ↙︎")
self.popout = not self.popout
return 1
if message == xp.Msg_PushButtonPressed and param1 == self.helpButton:
webbrowser.open('https://xppython3.rtfd.io/en/latest/development/index.html')
return 1
execute = False
if message == xp.Msg_PushButtonPressed and param1 == self.doButton:
execute = True
if not execute:
if message == xp.Msg_KeyPress:
if param1[2] == xp.VK_RETURN and param1[1] & xp.DownFlag:
execute = True
if execute:
# See if we need to scroll to the bottom
position = xp.getWidgetProperty(self.listboxWidget.widgetID, Prop.ListBoxScrollBarSliderPosition)
max_items = xp.getWidgetProperty(self.listboxWidget.widgetID, Prop.ListBoxMaxListBoxItems)
if position >= max_items:
# Yes, scroll to the bottom
xp.setWidgetProperty(self.listboxWidget.widgetID, Prop.ListBoxScrollBarSliderPosition, max_items - 1)
try:
self.try_execute(xp.getWidgetDescriptor(self.textWidget))
except SystemExit:
xp.hideWidget(self.widget1)
except Exception as e:
xp.log(f"Caught other exception in widget messages, after try_execute: {e}")
xp.log()
return 1
return 0
def toggleCommand(self, _commandRef, phase, _refCon):
if phase != xp.CommandBegin:
return 0
if not self.widget1:
return 0
win = xp.getWidgetUnderlyingWindow(self.widget1)
if xp.isWidgetVisible(self.widget1) and xp.getWindowIsVisible(win):
xp.hideWidget(self.widget1)
else:
xp.showWidget(self.widget1)
xp.setWindowIsVisible(win, 1)
if self.popout:
xp.setWindowPositioningMode(win, xp.WindowPopOut, 1)
xp.bringWindowToFront(win)
return 1
def XPluginStop(self):
if self.prevCommands:
# Write command history to file
filename = os.path.join(os.path.dirname(xp.getPrefsPath()), History_Filename)
with open(filename, 'w', encoding='utf-8') as fp:
for i in self.prevCommands:
fp.write(i + '\n')
if self.toggleCommandRef:
xp.unregisterCommandHandler(self.toggleCommandRef,
self.toggleCommand,
1, None)
self.toggleCommandRef = None
if self.menuIdx:
xp.removeMenuItem(xp.findPluginsMenu(), self.menuIdx)
self.menuIdx = None
def XPluginEnable(self):
# initialize with leading blank lines -- this puts the "next" input at the very
# bottom of the window. This mimics scrolling input better.
self.createPopup(popout=False)
num_added = 0
for line in self.prevCommands[0:-1]:
if line != '>>> ':
num_added += 1
self.listboxWidget.add(line)
num_blank_lines = xp.getWidgetProperty(self.listboxWidget.widgetID,
Prop.ListBoxMaxListBoxItems, None)
num_blank_lines -= 2 + num_added
for _i in range(num_blank_lines):
self.listboxWidget.add('')
return 1
def XPluginDisable(self):
if self.widget1:
xp.destroyWidget(self.widget1, 1)
self.widget1 = None
if self.listboxWidget is not None:
self.listboxWidget.destroy()
self.listboxWidget = None
def XPluginReceiveMessage(self, inFromWho, inMessage, inParam):
pass
def try_execute(self, s):
xp.setWidgetProperty(self.textWidget, xp.Property_ScrollPosition, 0) # reset left-most in text widget
if s.startswith('>>> /'):
self.listboxWidget.add(s)
items = [x for x in dir(xp) if re.search(s[5:], x, flags=re.IGNORECASE)]
sorted(items)
for i in items:
self.listboxWidget.add(i)
xp.setWidgetDescriptor(self.textWidget, '>>> ')
return
elif s.startswith('>>> ?'):
self.listboxWidget.add(s)
# with open(os.path.join(xp.getSystemPath(), 'Resources', 'plugins', 'Commands.txt'), "r", encoding='utf-8') as fp_c:
with open(os.path.join(xp.getSystemPath(), 'Resources', 'plugins', 'DataRefs.txt'), "r", encoding='utf-8') as fp_d:
items = [x for x in fp_d.readlines() if re.search(s[5:], x, flags=re.IGNORECASE)]
# items += [x for x in fp_c.readlines() if s[5:].lower() in x.lower()]
sorted(items)
for i in items:
self.listboxWidget.add(i)
xp.setWidgetDescriptor(self.textWidget, '>>> ')
return
self.prevCommands.append(s)
self.historyIdx = -1
try:
self.partialCommand.append(self.prevCommands[self.historyIdx][4:])
self.listboxWidget.add(s)
if codeop.compile_command('\n'.join(self.partialCommand), symbol='single'):
if (s.startswith('...') or s.startswith(' ')) and (s != '... ' and s != ' '):
xp.setWidgetDescriptor(self.textWidget, '... ')
else:
if len(self.partialCommand) == 1 and self.partialCommand[0] == '':
self.partialCommand = []
return
self.do('\n'.join(self.partialCommand))
xp.setWidgetDescriptor(self.textWidget, '>>> ')
self.partialCommand = []
else:
xp.setWidgetDescriptor(self.textWidget, '... ')
except IncompleteError:
pass
except SystemExit:
raise
except Exception:
# do it anyway -- this captures the exception output and
# adds it to the window
try:
self.do('\n'.join(self.partialCommand))
except Exception:
pass
xp.setWidgetDescriptor(self.textWidget, '>>> ')
self.partialCommand = []
def do(self, s):
f = io.StringIO()
e = io.StringIO()
num_lines = len(s.split('\n'))
if s.strip().startswith('#'):
return
if s == '':
self.listboxWidget.add('>>> ')
return
with contextlib.redirect_stderr(e):
with contextlib.redirect_stdout(f):
print(f">>> {s}")
try:
exec(compile(s, '<string>', 'single'), globals())
except SystemExit:
raise
except Exception:
e_type, value, tb = sys.exc_info()
traceback.print_exception(e_type, value, tb)
s = f.getvalue().strip()
if s:
# print stdout, but SKIP the length of the incoming commands. (we already display them)
for line in s.split('\n')[(num_lines):]:
self.listboxWidget.add(line)
s = e.getvalue().strip()
if s:
for line in s.split('\n'):
self.listboxWidget.add(line)
def paste(self):
if sys.version_info.minor >= 7:
lines = paste.getClipboard()
# 'removePrefix' allows us work with pasted code which, itself includes '>>> '. e.g.:
# >>> def log(s):
# ... print("f{s}")
# ...
# will work exactly the same as:
# def log(s):
# print("f{s}")
# This makes it easier to cut and paste from python documentation examples
removePrefix = lines and (lines[0].startswith('>>> ') or lines[0].startswith('... '))
for idx, line in enumerate(lines):
line = line[4:] if removePrefix else line
if idx == 0:
# For first pasted line, get current text box content, and merge
# pasted line with content.
currentText = xp.getWidgetDescriptor(self.textWidget)
selStart = xp.getWidgetProperty(self.textWidget, xp.Property_EditFieldSelStart, None)
selEnd = xp.getWidgetProperty(self.textWidget, xp.Property_EditFieldSelEnd, None)
currentText = currentText[:selStart] + line + currentText[selEnd:]
xp.setWidgetProperty(self.textWidget, xp.Property_EditFieldSelStart, selStart + len(line))
xp.setWidgetProperty(self.textWidget, xp.Property_EditFieldSelEnd, selStart + len(line))
xp.setWidgetDescriptor(self.textWidget, currentText.split('\n')[-1])
continue
# if there is existing code in textWidget, execute it first.
if len(xp.getWidgetDescriptor(self.textWidget)) > 4:
self.try_execute(xp.getWidgetDescriptor(self.textWidget))
# On paste, we may get a blank line, say between lines of code,
# which should not terminate code / function def, so
# IF we see a fully blank line and it's not the last line of paste
# we add same number of blanks from the _next_ line
# (this will fail if you try to paste two blank lines in a row, within
# a control block... so don't.)
if line == '' and idx != len(lines) - 1:
next_line = lines[idx + 1][4:] if removePrefix else lines[idx + 1]
line = ' ' * (len(next_line) - len(next_line.lstrip()))
if line == '':
if not self.partialCommand:
continue
self.try_execute(('... ' if self.partialCommand else '>>> ') + line)
else:
xp.log("Paste supported Python 3.7+")
def getPluginList():
"""
return list of python plugin signatures
"""
return [x[1] for x in xp.pythonGetDicts()['plugins'].values()]
def getPluginInstance(signature='xppython3.minipython'):
"""
For (optional) python plugin signature, return its PythonInterface instance
"""
for instance, data in xp.pythonGetDicts()['plugins'].items():
if data[1] == signature:
return instance
return None