VCS: Simplify promptSubmit a bit more

+ fix regression for Git, which allowed to commit invalid commits.

Amends commit 9b61e484be.

Change-Id: I7571863bb982bfae1aa040e08f8c68010b14b147
Reviewed-by: André Hartmann <aha_1980@gmx.de>

src/plugins/git/gitplugin.cpp

@@ -252,6 +252,7 @@ public:
     void updateActions(VcsBasePluginPrivate::ActionState) override;
     bool submitEditorAboutToClose() override;
     void discardCommit() override { cleanCommitMessageFile(); }
+    bool canCommitOnFailure() const override { return false; }
 
     void diffCurrentFile();
     void diffCurrentProject();

src/plugins/vcsbase/vcsbaseplugin.cpp

@@ -529,8 +529,7 @@ void VcsBasePluginPrivate::slotSubmitEditorAboutToClose(VcsBaseSubmitEditor *sub
                      << "closing submit editor" << submitEditor
                      << (submitEditor ? submitEditor->document()->id().name() : QByteArray());
     if (submitEditor == m_submitEditor) {
-        const VcsBaseSubmitEditor::PromptSubmitResult response =
-                submitEditor->promptSubmit(this, !m_submitActionTriggered);
+        const VcsBaseSubmitEditor::PromptSubmitResult response = submitEditor->promptSubmit(this);
         m_submitActionTriggered = false;
 
         switch (response) {

src/plugins/vcsbase/vcsbaseplugin.h

@@ -137,6 +137,8 @@ public:
     virtual QString commitDisplayName() const;
 
     void commitFromEditor();
+    virtual bool canCommitOnFailure() const { return true; }
+    bool submitActionTriggered() const { return m_submitActionTriggered; }
 
 protected:
     // Prompt to save all files before commit:

src/plugins/vcsbase/vcsbasesubmiteditor.cpp

@@ -495,10 +495,7 @@ static QString withUnusedMnemonic(QString string, const QList<QPushButton *> &ot
     return string;
 }
 
-VcsBaseSubmitEditor::PromptSubmitResult
-        VcsBaseSubmitEditor::promptSubmit(VcsBasePluginPrivate *plugin,
-                                          bool prompt,
-                                          bool canCommitOnFailure)
+VcsBaseSubmitEditor::PromptSubmitResult VcsBaseSubmitEditor::promptSubmit(VcsBasePluginPrivate *plugin)
 {
     auto submitWidget = static_cast<SubmitEditorWidget *>(this->widget());
 
@@ -512,6 +509,7 @@ VcsBaseSubmitEditor::PromptSubmitResult
     // Pop up a message depending on whether the check succeeded and the
     // user wants to be prompted
     bool canCommit = checkSubmitMessage(&errorMessage) && submitWidget->canSubmit(&errorMessage);
+    const bool prompt = !plugin->submitActionTriggered();
     if (canCommit && !prompt)
         return SubmitConfirmed;
     CheckableMessageBox mb(Core::ICore::dialogParent());
@@ -529,7 +527,7 @@ VcsBaseSubmitEditor::PromptSubmitResult
     }
     mb.setText(message);
     QDialogButtonBox::StandardButtons buttons = QDialogButtonBox::Close | QDialogButtonBox::Cancel;
-    if (canCommit || canCommitOnFailure)
+    if (canCommit || plugin->canCommitOnFailure())
         buttons |= QDialogButtonBox::Ok;
     mb.setStandardButtons(buttons);
     QPushButton *cancelButton = mb.button(QDialogButtonBox::Cancel);

src/plugins/vcsbase/vcsbasesubmiteditor.h

@@ -54,9 +54,7 @@ public:
     // 'promptSetting' points to a bool variable containing the plugin's
     // prompt setting. The user can uncheck it from the message box.
     enum PromptSubmitResult { SubmitConfirmed, SubmitCanceled, SubmitDiscarded };
-    PromptSubmitResult promptSubmit(VcsBasePluginPrivate *plugin,
-                                    bool prompt,
-                                    bool canCommitOnFailure = true);
+    PromptSubmitResult promptSubmit(VcsBasePluginPrivate *plugin);
 
     QAbstractItemView::SelectionMode fileListSelectionMode() const;
     void setFileListSelectionMode(QAbstractItemView::SelectionMode sm);