src/eric7/Plugins/VcsPlugins/vcsGit/GitDiffDialog.py

branch
eric7
changeset 9221
bf71ee032bb4
parent 9209
b99e7fd55fd3
child 9413
80c06d472826
--- a/src/eric7/Plugins/VcsPlugins/vcsGit/GitDiffDialog.py	Wed Jul 13 11:16:20 2022 +0200
+++ b/src/eric7/Plugins/VcsPlugins/vcsGit/GitDiffDialog.py	Wed Jul 13 14:55:47 2022 +0200
@@ -31,43 +31,41 @@
     Class implementing a dialog to show the output of the git diff command
     process.
     """
+
     def __init__(self, vcs, parent=None):
         """
         Constructor
-        
+
         @param vcs reference to the vcs object
         @param parent parent widget (QWidget)
         """
         super().__init__(parent)
         self.setupUi(self)
-        
+
         self.refreshButton = self.buttonBox.addButton(
-            self.tr("Refresh"), QDialogButtonBox.ButtonRole.ActionRole)
-        self.refreshButton.setToolTip(
-            self.tr("Press to refresh the display"))
+            self.tr("Refresh"), QDialogButtonBox.ButtonRole.ActionRole
+        )
+        self.refreshButton.setToolTip(self.tr("Press to refresh the display"))
         self.refreshButton.setEnabled(False)
-        self.buttonBox.button(
-            QDialogButtonBox.StandardButton.Save).setEnabled(False)
-        self.buttonBox.button(
-            QDialogButtonBox.StandardButton.Close).setDefault(True)
-        
+        self.buttonBox.button(QDialogButtonBox.StandardButton.Save).setEnabled(False)
+        self.buttonBox.button(QDialogButtonBox.StandardButton.Close).setDefault(True)
+
         try:
             # insert the search widget if it is available
-            from EricWidgets.EricTextEditSearchWidget import (
-                EricTextEditSearchWidget
-            )
+            from EricWidgets.EricTextEditSearchWidget import EricTextEditSearchWidget
+
             self.searchWidget = EricTextEditSearchWidget(self.contentsGroup)
             self.searchWidget.setFocusPolicy(Qt.FocusPolicy.WheelFocus)
             self.searchWidget.setObjectName("searchWidget")
             self.contentsGroup.layout().insertWidget(1, self.searchWidget)
             self.searchWidget.attachTextEdit(self.contents)
-            
+
             self.searchWidget2 = EricTextEditSearchWidget(self.contentsGroup)
             self.searchWidget2.setFocusPolicy(Qt.FocusPolicy.WheelFocus)
             self.searchWidget2.setObjectName("searchWidget2")
             self.contentsGroup.layout().addWidget(self.searchWidget2)
             self.searchWidget2.attachTextEdit(self.contents2)
-            
+
             self.setTabOrder(self.filesCombo, self.searchWidget)
             self.setTabOrder(self.searchWidget, self.contents)
             self.setTabOrder(self.contents, self.contents2)
@@ -77,43 +75,45 @@
             # eric version without search widget
             self.searchWidget = None
             self.searchWidget2 = None
-        
+
         self.vcs = vcs
-        
+
         font = Preferences.getEditorOtherFonts("MonospacedFont")
         self.contents.document().setDefaultFont(font)
         self.contents2.document().setDefaultFont(font)
-        
+
         self.highlighter = GitDiffHighlighter(self.contents.document())
         self.highlighter2 = GitDiffHighlighter(self.contents2.document())
-        
+
         self.__diffGenerator = GitDiffGenerator(vcs, self)
         self.__diffGenerator.finished.connect(self.__generatorFinished)
-        
+
         self.__modeMessages = {
             "work2stage": self.tr("Working Tree to Staging Area"),
             "stage2repo": self.tr("Staging Area to HEAD Commit"),
             "work2repo": self.tr("Working Tree to HEAD Commit"),
-            "work2stage2repo": self.tr("Working to Staging (top)"
-                                       " and Staging to HEAD (bottom)"),
+            "work2stage2repo": self.tr(
+                "Working to Staging (top)" " and Staging to HEAD (bottom)"
+            ),
             "stash": self.tr("Stash Contents"),
             "stashName": self.tr("Stash Contents of {0}"),
         }
-    
+
     def closeEvent(self, e):
         """
         Protected slot implementing a close event handler.
-        
+
         @param e close event (QCloseEvent)
         """
         self.__diffGenerator.stopProcesses()
         e.accept()
-    
-    def start(self, fn, versions=None, diffMode="work2repo", stashName="",
-              refreshable=False):
+
+    def start(
+        self, fn, versions=None, diffMode="work2repo", stashName="", refreshable=False
+    ):
         """
         Public slot to start the git diff command.
-        
+
         @param fn filename to be diffed (string)
         @param versions list of versions to be diffed (list of up to 2 strings
             or None)
@@ -129,35 +129,39 @@
         @exception ValueError raised to indicate a bad value for the 'diffMode'
             parameter.
         """
-        if diffMode not in ["work2repo", "work2stage", "stage2repo",
-                            "work2stage2repo", "stash"]:
+        if diffMode not in [
+            "work2repo",
+            "work2stage",
+            "stage2repo",
+            "work2stage2repo",
+            "stash",
+        ]:
             raise ValueError("Bad value for 'diffMode' parameter.")
-        
+
         self.refreshButton.setVisible(refreshable)
-        
+
         self.__filename = fn
         self.__diffMode = diffMode
-        
+
         self.errorGroup.hide()
-        
+
         self.contents.clear()
         self.contents2.clear()
         self.contents2.setVisible(diffMode == "work2stage2repo")
         if self.searchWidget2:
             self.searchWidget2.setVisible(diffMode == "work2stage2repo")
-        
+
         self.filesCombo.clear()
-        
+
         with contextlib.suppress(AttributeError):
             self.highlighter.regenerateRules()
             self.highlighter2.regenerateRules()
-        
-        if diffMode in ["work2repo", "work2stage", "stage2repo",
-                        "work2stage2repo"]:
+
+        if diffMode in ["work2repo", "work2stage", "stage2repo", "work2stage2repo"]:
             self.contentsGroup.setTitle(
-                self.tr("Difference ({0})")
-                .format(self.__modeMessages[diffMode]))
-            
+                self.tr("Difference ({0})").format(self.__modeMessages[diffMode])
+            )
+
             if versions is not None:
                 self.raise_()
                 self.activateWindow()
@@ -166,76 +170,75 @@
                 msg = self.__modeMessages["stashName"].format(stashName)
             else:
                 msg = self.__modeMessages["stash"]
-            self.contentsGroup.setTitle(
-                self.tr("Difference ({0})").format(msg))
-        
+            self.contentsGroup.setTitle(self.tr("Difference ({0})").format(msg))
+
         procStarted = self.__diffGenerator.start(
-            fn, versions=versions, diffMode=diffMode, stashName=stashName)
+            fn, versions=versions, diffMode=diffMode, stashName=stashName
+        )
         if not procStarted:
             EricMessageBox.critical(
                 self,
-                self.tr('Process Generation Error'),
+                self.tr("Process Generation Error"),
                 self.tr(
-                    'The process {0} could not be started. '
-                    'Ensure, that it is in the search path.'
-                ).format('git'))
+                    "The process {0} could not be started. "
+                    "Ensure, that it is in the search path."
+                ).format("git"),
+            )
             return
-    
+
     def __generatorFinished(self):
         """
         Private slot connected to the finished signal.
         """
         self.refreshButton.setEnabled(True)
-        
+
         diff1, diff2, errors, fileSeparators = self.__diffGenerator.getResult()
-        
+
         if diff1:
             self.contents.setPlainText("".join(diff1))
         else:
-            self.contents.setPlainText(
-                self.tr('There is no difference.'))
-        
+            self.contents.setPlainText(self.tr("There is no difference."))
+
         if diff2:
             self.contents2.setPlainText("".join(diff2))
         else:
-            self.contents2.setPlainText(
-                self.tr('There is no difference.'))
-        
+            self.contents2.setPlainText(self.tr("There is no difference."))
+
         if errors:
             self.errorGroup.show()
             self.errors.setPlainText(errors)
             self.errors.ensureCursorVisible()
-        
-        self.buttonBox.button(
-            QDialogButtonBox.StandardButton.Save).setEnabled(bool(diff2))
-        self.buttonBox.button(
-            QDialogButtonBox.StandardButton.Close).setEnabled(True)
-        self.buttonBox.button(
-            QDialogButtonBox.StandardButton.Close).setDefault(True)
-        self.buttonBox.button(
-            QDialogButtonBox.StandardButton.Close).setFocus(
-                Qt.FocusReason.OtherFocusReason)
-        
+
+        self.buttonBox.button(QDialogButtonBox.StandardButton.Save).setEnabled(
+            bool(diff2)
+        )
+        self.buttonBox.button(QDialogButtonBox.StandardButton.Close).setEnabled(True)
+        self.buttonBox.button(QDialogButtonBox.StandardButton.Close).setDefault(True)
+        self.buttonBox.button(QDialogButtonBox.StandardButton.Close).setFocus(
+            Qt.FocusReason.OtherFocusReason
+        )
+
         for contents in [self.contents, self.contents2]:
             tc = contents.textCursor()
             tc.movePosition(QTextCursor.MoveOperation.Start)
             contents.setTextCursor(tc)
             contents.ensureCursorVisible()
-        
+
         fileSeparators = self.__mergeFileSeparators(fileSeparators)
         self.filesCombo.addItem(self.tr("<Start>"), (0, 0))
         self.filesCombo.addItem(self.tr("<End>"), (-1, -1))
         for oldFile, newFile, pos1, pos2 in sorted(fileSeparators):
             if oldFile != newFile:
                 self.filesCombo.addItem(
-                    "{0} -- {1}".format(oldFile, newFile), (pos1, pos2))
+                    "{0} -- {1}".format(oldFile, newFile), (pos1, pos2)
+                )
             else:
                 self.filesCombo.addItem(oldFile, (pos1, pos2))
-    
+
     def __mergeFileSeparators(self, fileSeparators):
         """
         Private method to merge the file separator entries.
-        
+
         @param fileSeparators list of file separator entries to be merged
         @return merged list of file separator entries
         """
@@ -249,31 +252,28 @@
                 if pos2 != -2:
                     separators[(oldFile, newFile)][3] = pos2
         return list(separators.values())
-    
+
     def on_buttonBox_clicked(self, button):
         """
         Private slot called by a button of the button box clicked.
-        
+
         @param button button that was clicked (QAbstractButton)
         """
-        if button == self.buttonBox.button(
-            QDialogButtonBox.StandardButton.Save
-        ):
+        if button == self.buttonBox.button(QDialogButtonBox.StandardButton.Save):
             self.on_saveButton_clicked()
         elif button == self.refreshButton:
             self.on_refreshButton_clicked()
-    
+
     @pyqtSlot(int)
     def on_filesCombo_activated(self, index):
         """
         Private slot to handle the selection of a file.
-        
+
         @param index activated row (integer)
         """
         para1, para2 = self.filesCombo.itemData(index)
-        
-        for para, contents in [(para1, self.contents),
-                               (para2, self.contents2)]:
+
+        for para, contents in [(para1, self.contents), (para2, self.contents2)]:
             if para == 0:
                 tc = contents.textCursor()
                 tc.movePosition(QTextCursor.MoveOperation.Start)
@@ -290,21 +290,23 @@
                 tc.movePosition(QTextCursor.MoveOperation.End)
                 contents.setTextCursor(tc)
                 contents.ensureCursorVisible()
-                
+
                 # step 2: move cursor to desired line
                 tc = contents.textCursor()
                 delta = tc.blockNumber() - para
-                tc.movePosition(QTextCursor.MoveOperation.PreviousBlock,
-                                QTextCursor.MoveMode.MoveAnchor,
-                                delta)
+                tc.movePosition(
+                    QTextCursor.MoveOperation.PreviousBlock,
+                    QTextCursor.MoveMode.MoveAnchor,
+                    delta,
+                )
                 contents.setTextCursor(tc)
                 contents.ensureCursorVisible()
-    
+
     @pyqtSlot()
     def on_saveButton_clicked(self):
         """
         Private slot to handle the Save button press.
-        
+
         It saves the diff shown in the dialog to a file in the local
         filesystem.
         """
@@ -313,24 +315,25 @@
                 fname = self.vcs.splitPathList(self.__filename)[0]
             else:
                 dname, fname = self.vcs.splitPath(self.__filename[0])
-                if fname != '.':
+                if fname != ".":
                     fname = "{0}.diff".format(self.__filename[0])
                 else:
                     fname = dname
         else:
             fname = self.vcs.splitPath(self.__filename)[0]
-        
+
         fname, selectedFilter = EricFileDialog.getSaveFileNameAndFilter(
             self,
             self.tr("Save Diff"),
             fname,
             self.tr("Patch Files (*.diff)"),
             None,
-            EricFileDialog.DontConfirmOverwrite)
-        
+            EricFileDialog.DontConfirmOverwrite,
+        )
+
         if not fname:
             return  # user aborted
-        
+
         fpath = pathlib.Path(fname)
         if not fpath.suffix:
             ex = selectedFilter.split("(*")[1].split(")")[0]
@@ -340,12 +343,14 @@
             res = EricMessageBox.yesNo(
                 self,
                 self.tr("Save Diff"),
-                self.tr("<p>The patch file <b>{0}</b> already exists."
-                        " Overwrite it?</p>").format(fpath),
-                icon=EricMessageBox.Warning)
+                self.tr(
+                    "<p>The patch file <b>{0}</b> already exists." " Overwrite it?</p>"
+                ).format(fpath),
+                icon=EricMessageBox.Warning,
+            )
             if not res:
                 return
-        
+
         eol = ericApp().getObject("Project").getEolString()
         try:
             with fpath.open("w", encoding="utf-8", newline="") as f:
@@ -353,22 +358,22 @@
                 f.write(eol)
         except OSError as why:
             EricMessageBox.critical(
-                self, self.tr('Save Diff'),
+                self,
+                self.tr("Save Diff"),
                 self.tr(
-                    '<p>The patch file <b>{0}</b> could not be saved.'
-                    '<br>Reason: {1}</p>')
-                .format(fpath, str(why)))
-    
+                    "<p>The patch file <b>{0}</b> could not be saved."
+                    "<br>Reason: {1}</p>"
+                ).format(fpath, str(why)),
+            )
+
     @pyqtSlot()
     def on_refreshButton_clicked(self):
         """
         Private slot to refresh the display.
         """
-        self.buttonBox.button(
-            QDialogButtonBox.StandardButton.Close).setEnabled(False)
-        
-        self.buttonBox.button(
-            QDialogButtonBox.StandardButton.Save).setEnabled(False)
+        self.buttonBox.button(QDialogButtonBox.StandardButton.Close).setEnabled(False)
+
+        self.buttonBox.button(QDialogButtonBox.StandardButton.Save).setEnabled(False)
         self.refreshButton.setEnabled(False)
-        
+
         self.start(self.__filename, diffMode=self.__diffMode, refreshable=True)

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