McuSupport: Register Qt for MCUs examples

This change introduces the registration of examples (or rather demos) of
the Qt for MCUs SDK at the launch time of Qt Creator.

This presumes that either the SDK installer set the Qt for MCUs SDK path
(which is the default use-case) or that the user selected/changed the
SDK path in a prior run of Qt Creator.

Task-number: UL-1218
Change-Id: I6484d3e3065f501da4cd6faccfe02605003f6cbf
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/mcusupport/CMakeLists.txt

@@ -1,6 +1,6 @@
 add_qtc_plugin(McuSupport
   DEPENDS Qt5::Core
-  PLUGIN_DEPENDS Core ProjectExplorer Debugger CMakeProjectManager
+  PLUGIN_DEPENDS Core ProjectExplorer Debugger CMakeProjectManager QtSupport
   SOURCES
     mcusupport.qrc
     mcusupport_global.h

src/plugins/mcusupport/mcusupport.qbs

@@ -11,6 +11,7 @@ QtcPlugin {
     Depends { name: "ProjectExplorer" }
     Depends { name: "Debugger" }
     Depends { name: "CMakeProjectManager" }
+    Depends { name: "QtSupport" }
 
     files: [
         "mcusupport.qrc",

src/plugins/mcusupport/mcusupport_dependencies.pri

@@ -8,4 +8,5 @@ QTC_PLUGIN_DEPENDS += \
     coreplugin \
     projectexplorer \
     debugger \
-    cmakeprojectmanager
+    cmakeprojectmanager \
+    qtsupport

src/plugins/mcusupport/mcusupportoptions.cpp

@@ -39,6 +39,7 @@
 #include <projectexplorer/kitmanager.h>
 #include <projectexplorer/kitinformation.h>
 #include <projectexplorer/devicesupport/devicemanager.h>
+#include <qtsupport/qtversionmanager.h>
 #include <utils/algorithm.h>
 #include <utils/fileutils.h>
 #include <utils/infolabel.h>
@@ -356,22 +357,45 @@ void McuSupportOptions::populatePackagesAndTargets()
     setQulDir(Utils::FilePath::fromUserInput(qtForMCUsSdkPackage->path()));
 }
 
+static Utils::FilePath qulDocsDir()
+{
+    const Utils::FilePath qulDir = McuSupportOptions::qulDirFromSettings();
+    if (qulDir.isEmpty() || !qulDir.exists())
+        return {};
+    const Utils::FilePath docsDir = qulDir.pathAppended("docs");
+    return docsDir.exists() ? docsDir : Utils::FilePath();
+}
+
 void McuSupportOptions::registerQchFiles()
 {
-    const QString qulDir = qulDirFromSettings().toString();
-    if (qulDir.isEmpty() || !QFileInfo::exists(qulDir))
+    const QString docsDir = qulDocsDir().toString();
+    if (docsDir.isEmpty())
         return;
 
-    const QString docsPath = qulDir + "/docs/";
     const QStringList qchFiles = {
-        docsPath + "quickultralite.qch",
-        docsPath + "quickultralitecmake.qch"
+        docsDir + "/quickultralite.qch",
+        docsDir + "/quickultralitecmake.qch"
     };
     Core::HelpManager::registerDocumentation(
                 Utils::filtered(qchFiles,
                                 [](const QString &file) { return QFileInfo::exists(file); }));
 }
 
+void McuSupportOptions::registerExamples()
+{
+    const Utils::FilePath docsDir = qulDocsDir();
+    if (docsDir.isEmpty())
+        return;
+
+    const Utils::FilePath examplesDir =
+            McuSupportOptions::qulDirFromSettings().pathAppended("demos");
+    if (!examplesDir.exists())
+        return;
+
+    QtSupport::QtVersionManager::registerExampleSet("Qt for MCUs", docsDir.toString(),
+                                                    examplesDir.toString());
+}
+
 void McuSupportOptions::deletePackagesAndTargets()
 {
     qDeleteAll(packages);

src/plugins/mcusupport/mcusupportoptions.h

@@ -168,6 +168,7 @@ public:
     ProjectExplorer::Kit *newKit(const McuTarget *mcuTarget);
     void populatePackagesAndTargets();
     static void registerQchFiles();
+    static void registerExamples();
 
 private:
     void deletePackagesAndTargets();

src/plugins/mcusupport/mcusupportplugin.cpp

@@ -76,6 +76,7 @@ bool McuSupportPlugin::initialize(const QStringList& arguments, QString* errorSt
     dd = new McuSupportPluginPrivate;
 
     McuSupportOptions::registerQchFiles();
+    McuSupportOptions::registerExamples();
     ProjectExplorer::JsonWizardFactory::addWizardPath(
                 Utils::FilePath::fromString(":/mcusupport/wizards/"));