Make additional changes in the QtCreator side required for QDS new project dialog

* We need to use the CheckBox field to set the checked state of fields
  (TargetQtVersion, Use as default project location).
* When the validation of the Project Name or Project Location fails, we
  need a way to be notified of what went wrong. We also need a way to
  force the project intro page to execute the validation of those fields
  whenever we need (i.e. when the user types into our QML TextField
  controls)

Also, add a warning on loading wizards: whenever a wizard.json file
cannot be parsed, we should issue a qWarning(), so that we can more
easily notice when something went wrong.

Task-number: QDS-4490
Change-Id: I7cfa61b4e43d731db9d0679e093e723d947b60c0
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

src/libs/utils/projectintropage.cpp

@@ -195,6 +195,11 @@ bool ProjectIntroPage::validate()
     return false;
 }
 
+void ProjectIntroPage::fieldsUpdated()
+{
+    slotChanged();
+}
+
 void ProjectIntroPage::slotChanged()
 {
     const bool newComplete = validate();
@@ -286,6 +291,8 @@ void ProjectIntroPage::displayStatusMessage(InfoLabel::InfoType t, const QString
 {
     d->m_ui.stateLabel->setType(t);
     d->m_ui.stateLabel->setText(s);
+
+    emit statusMessageChanged(t, s);
 }
 
 void ProjectIntroPage::hideStatusLabel()

src/libs/utils/projectintropage.h

@@ -66,8 +66,14 @@ public:
 
     bool validateProjectName(const QString &name, QString *errorMessage);
 
+    // Calls slotChanged() - i.e. tell the page that some of its fields have been updated.
+    // This function is useful if you programmatically update the fields of the page (i.e. from
+    // your client code).
+    void fieldsUpdated();
+
 signals:
     void activated();
+    void statusMessageChanged(InfoLabel::InfoType type, const QString &message);
 
 public slots:
     void setFilePath(const FilePath &path);

src/plugins/projectexplorer/jsonwizard/jsonfieldpage.cpp

@@ -956,6 +956,15 @@ void CheckBoxField::setup(JsonFieldPage *page, const QString &name)
     });
 }
 
+void CheckBoxField::setChecked(bool value)
+{
+    auto w = qobject_cast<QCheckBox *>(widget());
+    QTC_ASSERT(w, return);
+
+    w->setChecked(value);
+    w->clicked(value);
+}
+
 bool CheckBoxField::validate(MacroExpander *expander, QString *message)
 {
     if (!JsonFieldPage::Field::validate(expander, message))

src/plugins/projectexplorer/jsonwizard/jsonfieldpage_p.h

@@ -230,11 +230,13 @@ private:
     Utils::PathChooser::Kind m_kind = Utils::PathChooser::ExistingDirectory;
 };
 
-class CheckBoxField : public JsonFieldPage::Field
+class PROJECTEXPLORER_EXPORT CheckBoxField : public JsonFieldPage::Field
 {
 public:
     bool suppressName() const override { return true; }
 
+    void setChecked(bool);
+
 private:
     bool parseData(const QVariant &data, QString *errorMessage) override;
 

src/plugins/projectexplorer/jsonwizard/jsonwizardfactory.cpp

@@ -257,12 +257,14 @@ QList<Core::IWizardFactory *> JsonWizardFactory::createWizardFactories()
                                       .arg(currentFile.fileName())
                                       .arg(line).arg(column)
                                       .arg(error.errorString()));
+                    qWarning() << "Failed to parse wizard: " << currentFile.fileName();
                     continue;
                 }
 
                 if (!json.isObject()) {
                     verboseLog.append(tr("* Did not find a JSON object in \"%1\".\n")
                                       .arg(currentFile.fileName()));
+                    qWarning() << "Failed to parse wizard: " << currentFile.fileName();
                     continue;
                 }
 
@@ -280,6 +282,7 @@ QList<Core::IWizardFactory *> JsonWizardFactory::createWizardFactories()
                 JsonWizardFactory *factory = createWizardFactory(data, currentDir, &errorMessage);
                 if (!factory) {
                     verboseLog.append(tr("* Failed to create: %1\n").arg(errorMessage));
+                    qWarning() << "Failed to create wizard: " << currentFile.fileName();
                     continue;
                 }