eric6/Plugins/PluginTabnanny.py

changeset 6942
2602857055c5
parent 6645
ad476851d7e0
child 7178
43e994af5ee0
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/eric6/Plugins/PluginTabnanny.py	Sun Apr 14 15:09:21 2019 +0200
@@ -0,0 +1,413 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2007 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing the Tabnanny plugin.
+"""
+
+from __future__ import unicode_literals
+
+import os
+
+from PyQt5.QtCore import QObject, pyqtSignal
+
+from E5Gui.E5Application import e5App
+from E5Gui.E5Action import E5Action
+from Project.ProjectBrowserModel import ProjectBrowserFileItem
+from Utilities import determinePythonVersion
+
+import Preferences
+import UI.Info
+
+# Start-Of-Header
+name = "Tabnanny Plugin"
+author = "Detlev Offenbach <detlev@die-offenbachs.de>"
+autoactivate = True
+deactivateable = True
+version = UI.Info.VersionOnly
+className = "TabnannyPlugin"
+packageName = "__core__"
+shortDescription = "Show the Tabnanny dialog."
+longDescription = """This plugin implements the Tabnanny dialog.""" \
+    """ Tabnanny is used to check Python source files for correct""" \
+    """ indentations."""
+pyqtApi = 2
+python2Compatible = True
+# End-Of-Header
+
+error = ""
+
+
+class TabnannyPlugin(QObject):
+    """
+    Class implementing the Tabnanny plugin.
+    
+    @signal indentChecked(str, bool, str, str) emitted when the indent
+        check was done.
+    @signal batchFinished() emitted when a style check batch is done
+    @signal error(str, str) emitted in case of an error
+    """
+    indentChecked = pyqtSignal(str, bool, str, str)
+    batchFinished = pyqtSignal()
+    error = pyqtSignal(str, str)
+    
+    def __init__(self, ui):
+        """
+        Constructor
+        
+        @param ui reference to the user interface object (UI.UserInterface)
+        """
+        super(TabnannyPlugin, self).__init__(ui)
+        self.__ui = ui
+        self.__initialize()
+        
+        self.backgroundService = e5App().getObject("BackgroundService")
+        
+        path = os.path.join(
+            os.path.dirname(__file__), 'CheckerPlugins', 'Tabnanny')
+        self.backgroundService.serviceConnect(
+            'indent', 'Python2', path, 'Tabnanny',
+            lambda *args: self.indentChecked.emit(*args),
+            onErrorCallback=self.serviceErrorPy2,
+            onBatchDone=self.batchJobDone)
+        self.backgroundService.serviceConnect(
+            'indent', 'Python3', path, 'Tabnanny',
+            lambda *args: self.indentChecked.emit(*args),
+            onErrorCallback=self.serviceErrorPy3,
+            onBatchDone=self.batchJobDone)
+        
+        self.queuedBatches = []
+        self.batchesFinished = True
+    
+    def __serviceError(self, fn, msg):
+        """
+        Private slot handling service errors.
+        
+        @param fn file name (string)
+        @param msg message text (string)
+        """
+        self.error.emit(fn, msg)
+    
+    def serviceErrorPy2(self, fx, lang, fn, msg):
+        """
+        Public slot handling service errors for Python 2.
+        
+        @param fx service name (string)
+        @param lang language (string)
+        @param fn file name (string)
+        @param msg message text (string)
+        """
+        if fx in ['indent', 'batch_indent'] and lang == 'Python2':
+            if fx == 'indent':
+                self.__serviceError(fn, msg)
+            else:
+                self.__serviceError(self.tr("Python 2 batch check"), msg)
+                self.batchJobDone(fx, lang)
+    
+    def serviceErrorPy3(self, fx, lang, fn, msg):
+        """
+        Public slot handling service errors for Python 2.
+        
+        @param fx service name (string)
+        @param lang language (string)
+        @param fn file name (string)
+        @param msg message text (string)
+        """
+        if fx in ['indent', 'batch_indent'] and lang == 'Python3':
+            if fx == 'indent':
+                self.__serviceError(fn, msg)
+            else:
+                self.__serviceError(self.tr("Python 3 batch check"), msg)
+                self.batchJobDone(fx, lang)
+    
+    def batchJobDone(self, fx, lang):
+        """
+        Public slot handling the completion of a batch job.
+        
+        @param fx service name (string)
+        @param lang language (string)
+        """
+        if fx in ['indent', 'batch_indent']:
+            if lang in self.queuedBatches:
+                self.queuedBatches.remove(lang)
+            # prevent sending the signal multiple times
+            if len(self.queuedBatches) == 0 and not self.batchesFinished:
+                self.batchFinished.emit()
+                self.batchesFinished = True
+    
+    def __initialize(self):
+        """
+        Private slot to (re)initialize the plugin.
+        """
+        self.__projectAct = None
+        self.__projectTabnannyDialog = None
+        
+        self.__projectBrowserAct = None
+        self.__projectBrowserMenu = None
+        self.__projectBrowserTabnannyDialog = None
+        
+        self.__editors = []
+        self.__editorAct = None
+        self.__editorTabnannyDialog = None
+
+    def indentCheck(self, lang, filename, source):
+        """
+        Public method to prepare an indentation check on one Python source
+        file.
+
+        @param lang language of the file or None to determine by internal
+            algorithm (str or None)
+        @param filename source filename (string)
+        @param source string containing the code to check (string)
+        """
+        if lang is None:
+            lang = 'Python{0}'.format(determinePythonVersion(filename, source))
+        if lang not in ['Python2', 'Python3']:
+            return
+        
+        self.backgroundService.enqueueRequest(
+            'indent', lang, filename, [source])
+
+    def indentBatchCheck(self, argumentsList):
+        """
+        Public method to prepare an indentation check on multiple Python
+        source files.
+        
+        @param argumentsList list of arguments tuples with each tuple
+            containing filename and source (string, string)
+        """
+        data = {
+            "Python2": [],
+            "Python3": [],
+        }
+        for filename, source in argumentsList:
+            lang = 'Python{0}'.format(determinePythonVersion(filename, source))
+            if lang not in ['Python2', 'Python3']:
+                continue
+            else:
+                data[lang].append((filename, source))
+        
+        self.queuedBatches = []
+        for lang in ['Python2', 'Python3']:
+            if data[lang]:
+                self.queuedBatches.append(lang)
+                self.backgroundService.enqueueRequest('batch_indent', lang, "",
+                                                      data[lang])
+                self.batchesFinished = False
+    
+    def cancelIndentBatchCheck(self):
+        """
+        Public method to cancel all batch jobs.
+        """
+        for lang in ['Python2', 'Python3']:
+            self.backgroundService.requestCancel('batch_style', lang)
+    
+    def activate(self):
+        """
+        Public method to activate this plugin.
+        
+        @return tuple of None and activation status (boolean)
+        """
+        menu = e5App().getObject("Project").getMenu("Checks")
+        if menu:
+            self.__projectAct = E5Action(
+                self.tr('Check Indentations'),
+                self.tr('&Indentations...'), 0, 0,
+                self, 'project_check_indentations')
+            self.__projectAct.setStatusTip(
+                self.tr('Check indentations using tabnanny.'))
+            self.__projectAct.setWhatsThis(self.tr(
+                """<b>Check Indentations...</b>"""
+                """<p>This checks Python files"""
+                """ for bad indentations using tabnanny.</p>"""
+            ))
+            self.__projectAct.triggered.connect(self.__projectTabnanny)
+            e5App().getObject("Project").addE5Actions([self.__projectAct])
+            menu.addAction(self.__projectAct)
+        
+        self.__editorAct = E5Action(
+            self.tr('Check Indentations'),
+            self.tr('&Indentations...'), 0, 0,
+            self, "")
+        self.__editorAct.setWhatsThis(self.tr(
+            """<b>Check Indentations...</b>"""
+            """<p>This checks Python files"""
+            """ for bad indentations using tabnanny.</p>"""
+        ))
+        self.__editorAct.triggered.connect(self.__editorTabnanny)
+        
+        e5App().getObject("Project").showMenu.connect(self.__projectShowMenu)
+        e5App().getObject("ProjectBrowser").getProjectBrowser("sources")\
+            .showMenu.connect(self.__projectBrowserShowMenu)
+        e5App().getObject("ViewManager").editorOpenedEd.connect(
+            self.__editorOpened)
+        e5App().getObject("ViewManager").editorClosedEd.connect(
+            self.__editorClosed)
+        
+        for editor in e5App().getObject("ViewManager").getOpenEditors():
+            self.__editorOpened(editor)
+        
+        return None, True
+
+    def deactivate(self):
+        """
+        Public method to deactivate this plugin.
+        """
+        e5App().getObject("Project").showMenu.disconnect(
+            self.__projectShowMenu)
+        e5App().getObject("ProjectBrowser").getProjectBrowser("sources")\
+            .showMenu.disconnect(self.__projectBrowserShowMenu)
+        e5App().getObject("ViewManager").editorOpenedEd.disconnect(
+            self.__editorOpened)
+        e5App().getObject("ViewManager").editorClosedEd.disconnect(
+            self.__editorClosed)
+        
+        menu = e5App().getObject("Project").getMenu("Checks")
+        if menu:
+            menu.removeAction(self.__projectAct)
+        
+        if self.__projectBrowserMenu:
+            if self.__projectBrowserAct:
+                self.__projectBrowserMenu.removeAction(
+                    self.__projectBrowserAct)
+        
+        for editor in self.__editors:
+            editor.showMenu.disconnect(self.__editorShowMenu)
+            menu = editor.getMenu("Checks")
+            if menu is not None:
+                menu.removeAction(self.__editorAct)
+        
+        self.__initialize()
+    
+    def __projectShowMenu(self, menuName, menu):
+        """
+        Private slot called, when the the project menu or a submenu is
+        about to be shown.
+        
+        @param menuName name of the menu to be shown (string)
+        @param menu reference to the menu (QMenu)
+        """
+        if menuName == "Checks" and self.__projectAct is not None:
+            self.__projectAct.setEnabled(
+                e5App().getObject("Project").getProjectLanguage() in
+                ["Python3", "Python2", "Python"])
+    
+    def __projectBrowserShowMenu(self, menuName, menu):
+        """
+        Private slot called, when the the project browser context menu or a
+        submenu is about to be shown.
+        
+        @param menuName name of the menu to be shown (string)
+        @param menu reference to the menu (QMenu)
+        """
+        if menuName == "Checks" and \
+           e5App().getObject("Project").getProjectLanguage() in \
+                ["Python3", "Python2", "Python"]:
+            self.__projectBrowserMenu = menu
+            if self.__projectBrowserAct is None:
+                self.__projectBrowserAct = E5Action(
+                    self.tr('Check Indentations'),
+                    self.tr('&Indentations...'), 0, 0,
+                    self, "")
+                self.__projectBrowserAct.setWhatsThis(self.tr(
+                    """<b>Check Indentations...</b>"""
+                    """<p>This checks Python files"""
+                    """ for bad indentations using tabnanny.</p>"""
+                ))
+                self.__projectBrowserAct.triggered.connect(
+                    self.__projectBrowserTabnanny)
+            if self.__projectBrowserAct not in menu.actions():
+                menu.addAction(self.__projectBrowserAct)
+    
+    def __projectTabnanny(self):
+        """
+        Private slot used to check the project files for bad indentations.
+        """
+        project = e5App().getObject("Project")
+        project.saveAllScripts()
+        ppath = project.getProjectPath()
+        files = [os.path.join(ppath, file)
+                 for file in project.pdata["SOURCES"]
+                 if file.endswith(
+                     tuple(Preferences.getPython("Python3Extensions")) +
+                     tuple(Preferences.getPython("PythonExtensions")))]
+        
+        from CheckerPlugins.Tabnanny.TabnannyDialog import TabnannyDialog
+        self.__projectTabnannyDialog = TabnannyDialog(self)
+        self.__projectTabnannyDialog.show()
+        self.__projectTabnannyDialog.prepare(files, project)
+    
+    def __projectBrowserTabnanny(self):
+        """
+        Private method to handle the tabnanny context menu action of the
+        project sources browser.
+        """
+        browser = e5App().getObject("ProjectBrowser").getProjectBrowser(
+            "sources")
+        if browser.getSelectedItemsCount([ProjectBrowserFileItem]) > 1:
+            fn = []
+            for itm in browser.getSelectedItems([ProjectBrowserFileItem]):
+                fn.append(itm.fileName())
+        else:
+            itm = browser.model().item(browser.currentIndex())
+            try:
+                fn = itm.fileName()
+            except AttributeError:
+                fn = itm.dirName()
+        
+        from CheckerPlugins.Tabnanny.TabnannyDialog import TabnannyDialog
+        self.__projectBrowserTabnannyDialog = TabnannyDialog(self)
+        self.__projectBrowserTabnannyDialog.show()
+        self.__projectBrowserTabnannyDialog.start(fn)
+    
+    def __editorOpened(self, editor):
+        """
+        Private slot called, when a new editor was opened.
+        
+        @param editor reference to the new editor (QScintilla.Editor)
+        """
+        menu = editor.getMenu("Checks")
+        if menu is not None:
+            menu.addAction(self.__editorAct)
+            editor.showMenu.connect(self.__editorShowMenu)
+            self.__editors.append(editor)
+    
+    def __editorClosed(self, editor):
+        """
+        Private slot called, when an editor was closed.
+        
+        @param editor reference to the editor (QScintilla.Editor)
+        """
+        try:
+            self.__editors.remove(editor)
+        except ValueError:
+            pass
+    
+    def __editorShowMenu(self, menuName, menu, editor):
+        """
+        Private slot called, when the the editor context menu or a submenu is
+        about to be shown.
+        
+        @param menuName name of the menu to be shown (string)
+        @param menu reference to the menu (QMenu)
+        @param editor reference to the editor
+        """
+        if menuName == "Checks":
+            if self.__editorAct not in menu.actions():
+                menu.addAction(self.__editorAct)
+            self.__editorAct.setEnabled(editor.isPyFile())
+    
+    def __editorTabnanny(self):
+        """
+        Private slot to handle the tabnanny context menu action of the editors.
+        """
+        editor = e5App().getObject("ViewManager").activeWindow()
+        if editor is not None:
+            if editor.checkDirty() and editor.getFileName() is not None:
+                from CheckerPlugins.Tabnanny.TabnannyDialog import \
+                    TabnannyDialog
+                self.__editorTabnannyDialog = TabnannyDialog(self)
+                self.__editorTabnannyDialog.show()
+                self.__editorTabnannyDialog.start(editor.getFileName())

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