Unify selection of 'valid' Qt versions for welcome page

Change-Id: I79ba4ac9f132a535efd9d362790b8e1d2b62d900
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>

src/plugins/qtsupport/exampleslistmodel.cpp

@@ -63,8 +63,9 @@ void setUniqueQtVersionIdSetting(int id)
     settings->setValue(QLatin1String(currentQtVersionFilterSettingsKeyC), id);
 }
 
-QtVersionsModel::QtVersionsModel(QObject *parent)
-    : QStandardItemModel(parent)
+QtVersionsModel::QtVersionsModel(ExamplesListModel *examplesModel, QObject *parent) :
+    QStandardItemModel(parent),
+    examplesModel(examplesModel)
 {
     QHash<int, QByteArray> roleNames;
     roleNames[Qt::UserRole + 1] = "text";
@@ -74,13 +75,11 @@ QtVersionsModel::QtVersionsModel(QObject *parent)
 
 int QtVersionsModel::findHighestQtVersion()
 {
-    QList<BaseQtVersion *> qtVersions = QtVersionManager::validVersions();
+    QList<BaseQtVersion *> qtVersions = examplesModel->qtVersions();
 
     BaseQtVersion *newVersion = 0;
 
     foreach (BaseQtVersion *version, qtVersions) {
-
-        if (version->isValid() && version->hasDemos() && version->hasExamples()) {
         if (!newVersion) {
             newVersion = version;
         } else {
@@ -92,7 +91,6 @@ int QtVersionsModel::findHighestQtVersion()
             }
         }
     }
-    }
 
     if (!newVersion && !qtVersions.isEmpty())
         newVersion = qtVersions.first();
@@ -108,12 +106,7 @@ void QtVersionsModel::setupQtVersions()
     beginResetModel();
     clear();
 
-    // prioritize default qt version
-    QList<BaseQtVersion *> qtVersions = QtVersionManager::validVersions();
-    ProjectExplorer::Kit *defaultKit = ProjectExplorer::KitManager::defaultKit();
-    BaseQtVersion *defaultVersion = QtKitInformation::qtVersion(defaultKit);
-    if (defaultVersion && qtVersions.contains(defaultVersion))
-        qtVersions.move(qtVersions.indexOf(defaultVersion), 0);
+    QList<BaseQtVersion *> qtVersions = examplesModel->qtVersions();
 
     int qtVersionSetting = uniqueQtVersionIdSetting();
     int newQtVersionSetting = noQtVersionsId;
@@ -133,13 +126,11 @@ void QtVersionsModel::setupQtVersions()
 
 
     foreach (BaseQtVersion *version, qtVersions) {
-        if (version->hasDemos() || version->hasExamples()) {
         QStandardItem *newItem = new QStandardItem();
         newItem->setData(version->displayName(), Qt::UserRole + 1);
         newItem->setData(version->uniqueId(), Qt::UserRole + 2);
         appendRow(newItem);
     }
-    }
     endResetModel();
 }
 
@@ -467,6 +458,28 @@ void ExamplesListModel::updateExamples()
     emit tagsUpdated();
 }
 
+
+QList<QtSupport::BaseQtVersion*> ExamplesListModel::qtVersions() const
+{
+    QList<BaseQtVersion*> versions = QtVersionManager::validVersions();
+
+    QMutableListIterator<BaseQtVersion*> iter(versions);
+    while (iter.hasNext()) {
+        BaseQtVersion *version = iter.next();
+        if (!version->hasExamples()
+                && !version->hasDemos())
+            iter.remove();
+    }
+
+    // prioritize default qt version
+    ProjectExplorer::Kit *defaultKit = ProjectExplorer::KitManager::defaultKit();
+    BaseQtVersion *defaultVersion = QtKitInformation::qtVersion(defaultKit);
+    if (defaultVersion && versions.contains(defaultVersion))
+        versions.move(versions.indexOf(defaultVersion), 0);
+
+    return versions;
+}
+
 QStringList ExamplesListModel::exampleSources(QString *examplesInstallPath, QString *demosInstallPath,
                                               QString *examplesFallback, QString *demosFallback,
                                               QString *sourceFallback)
@@ -510,21 +523,12 @@ QStringList ExamplesListModel::exampleSources(QString *examplesInstallPath, QStr
     QString potentialSourceFallback;
     const QStringList pattern(QLatin1String("*.xml"));
 
-    // prioritize default qt version
-    QList<BaseQtVersion *> qtVersions = QtVersionManager::validVersions();
-    ProjectExplorer::Kit *defaultKit = ProjectExplorer::KitManager::defaultKit();
-    BaseQtVersion *defaultVersion = QtKitInformation::qtVersion(defaultKit);
-    if (defaultVersion && qtVersions.contains(defaultVersion))
-        qtVersions.move(qtVersions.indexOf(defaultVersion), 0);
-
-    foreach (BaseQtVersion *version, qtVersions) {
-
+    foreach (BaseQtVersion *version, qtVersions()) {
         //filter for qt versions
         if (version->uniqueId() != m_uniqueQtId && m_uniqueQtId != noQtVersionsId)
             continue;
 
-        // qt5 with examples OR demos manifest
-        if (version->qtVersion().majorVersion == 5 && (version->hasExamples() || version->hasDemos())) {
+        if (version->qtVersion().majorVersion == 5) {
             // examples directory in Qt5 is under the qtbase submodule,
             // search other submodule directories for further manifest files
             QDir qt5docPath = QDir(version->documentationPath());
@@ -532,9 +536,7 @@ QStringList ExamplesListModel::exampleSources(QString *examplesInstallPath, QStr
             const QStringList demosPattern(QLatin1String("demos-manifest.xml"));
             QFileInfoList fis;
             foreach (QFileInfo subDir, qt5docPath.entryInfoList(QDir::Dirs | QDir::NoDotAndDotDot)) {
-                if (version->hasExamples())
                 fis << QDir(subDir.absoluteFilePath()).entryInfoList(examplesPattern);
-                if (version->hasDemos())
                 fis << QDir(subDir.absoluteFilePath()).entryInfoList(demosPattern);
             }
             if (!fis.isEmpty()) {
@@ -549,9 +551,7 @@ QStringList ExamplesListModel::exampleSources(QString *examplesInstallPath, QStr
         }
 
         QFileInfoList fis;
-        if (version->hasExamples())
         fis << QDir(version->examplesPath()).entryInfoList(pattern);
-        if (version->hasDemos())
         fis << QDir(version->demosPath()).entryInfoList(pattern);
         if (!fis.isEmpty()) {
             foreach (const QFileInfo &fi, fis)
@@ -559,7 +559,7 @@ QStringList ExamplesListModel::exampleSources(QString *examplesInstallPath, QStr
             return sources;
         }
         // check if this Qt version would be the preferred fallback, Qt 4 only
-        if (version->qtVersion().majorVersion == 4 && version->hasExamples() && version->hasDemos()) { // cached, so no performance hit
+        if (version->qtVersion().majorVersion == 4) { // cached, so no performance hit
             if (potentialExamplesFallback.isEmpty()) {
                 potentialExamplesFallback = version->examplesPath();
                 potentialDemosFallback = version->demosPath();
@@ -661,7 +661,7 @@ ExamplesListModelFilter::ExamplesListModelFilter(ExamplesListModel *sourceModel,
     m_showTutorialsOnly(true),
     m_sourceModel(sourceModel),
     m_timerId(0),
-    m_qtVersionModel(new QtVersionsModel(this)),
+    m_qtVersionModel(new QtVersionsModel(sourceModel, this)),
     m_blockIndexUpdate(false),
     m_qtVersionManagerInitialized(false),
     m_helpManagerInitialized(false),

src/plugins/qtsupport/exampleslistmodel.h

@@ -35,16 +35,19 @@
 #include <QStandardItemModel>
 #include <QStringList>
 #include <QXmlStreamReader>
+#include <qtsupport/baseqtversion.h>
 
 namespace QtSupport {
 namespace Internal {
 
+class ExamplesListModel;
+
 class QtVersionsModel : public QStandardItemModel
 {
     Q_OBJECT
 
 public:
-    QtVersionsModel(QObject *parent);
+    QtVersionsModel(ExamplesListModel *examplesModel, QObject *parent);
 
     int findHighestQtVersion();
     void setupQtVersions();
@@ -53,6 +56,9 @@ public:
 public slots:
     QVariant get(int i);
     QVariant getId(int i);
+
+private:
+    ExamplesListModel *examplesModel;
 };
 
 enum ExampleRoles
@@ -107,6 +113,8 @@ public:
     void setUniqueQtId(int id);
     void updateExamples();
 
+    QList<BaseQtVersion*> qtVersions() const;
+
 signals:
     void tagsUpdated();