QmlDesigner: Add examples download path setting

Add a PathChooser to StudioSettingsPage which enables setting the
location to which the QtDesignStudio examples are extracted.

Task-number: QDS-6174
Change-Id: I99232edf3c1200a84daaadf4a0d118317a5ea009
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/plugins/studiowelcome/examplecheckout.cpp

@@ -28,11 +28,19 @@
 #include <coreplugin/icore.h>
 
 #include <utils/archive.h>
+#include <utils/algorithm.h>
 #include <utils/networkaccessmanager.h>
 #include <utils/qtcassert.h>
 
 #include <private/qqmldata_p.h>
 
+#include <extensionsystem/pluginmanager.h>
+#include <extensionsystem/pluginspec.h>
+
+#include <projectexplorer/projectexplorer.h>
+
+#include <studiowelcomeplugin.h>
+
 #include <QDialog>
 #include <QFileDialog>
 #include <QFileInfo>
@@ -229,12 +237,9 @@ FileExtractor::FileExtractor(QObject *parent)
     : QObject(parent)
 {
     m_targetPath = Utils::FilePath::fromString(
-        QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation));
-
-    if (!m_targetPath.isEmpty())
-        m_targetPath = m_targetPath.pathAppended("QtDesignStudio");
-    else
-        m_targetPath = "/temp/";
+        Core::ICore::settings()
+            ->value(StudioWelcome::Internal::EXAMPLES_DOWNLOAD_PATH)
+            .toString());
 
     m_timer.setInterval(100);
     m_timer.setSingleShot(false);
@@ -247,6 +252,32 @@ FileExtractor::FileExtractor(QObject *parent)
 
         emit birthTimeChanged();
     });
+
+    const ExtensionSystem::PluginSpec *pluginSpec
+        = Utils::findOrDefault(ExtensionSystem::PluginManager::plugins(),
+                               Utils::equal(&ExtensionSystem::PluginSpec::name,
+                                            QString("StudioWelcome")));
+
+    if (!pluginSpec)
+        return;
+
+    ExtensionSystem::IPlugin *plugin = pluginSpec->plugin();
+
+    if (!plugin)
+        return;
+
+    auto studioWelcomePlugin = qobject_cast<StudioWelcome::Internal::StudioWelcomePlugin *>(plugin);
+
+    if (studioWelcomePlugin) {
+        QObject::connect(studioWelcomePlugin,
+                         &StudioWelcome::Internal::StudioWelcomePlugin::examplesDownloadPathChanged,
+                         this,
+                         [this](const QString &path) {
+                             m_targetPath = Utils::FilePath::fromString(path);
+                             emit targetPathChanged();
+                             emit targetFolderExistsChanged();
+                         });
+    }
 }
 
 FileExtractor::~FileExtractor() {}

src/plugins/studiowelcome/studiowelcomeplugin.cpp

@@ -66,6 +66,7 @@
 #include <QFontDatabase>
 #include <QGroupBox>
 #include <QPointer>
+#include <QPushButton>
 #include <QQmlContext>
 #include <QQmlEngine>
 #include <QQuickItem>
@@ -777,6 +778,18 @@ void setSettingIfDifferent(const QString &key, bool value, bool &dirty)
     }
 }
 
+const Utils::FilePath defaultExamplesPath = Utils::FilePath::fromString(
+                                                QStandardPaths::writableLocation(
+                                                    QStandardPaths::DocumentsLocation))
+                                                .pathAppended("QtDesignStudio");
+
+static QString examplesPathSetting()
+{
+    return Core::ICore::settings()
+        ->value(EXAMPLES_DOWNLOAD_PATH, defaultExamplesPath.toString())
+        .toString();
+}
+
 WelcomeMode::~WelcomeMode()
 {
     delete m_modeWidget;
@@ -786,19 +799,18 @@ StudioSettingsPage::StudioSettingsPage()
     : m_buildCheckBox(new QCheckBox(tr("Build")))
     , m_debugCheckBox(new QCheckBox(tr("Debug")))
     , m_analyzeCheckBox(new QCheckBox(tr("Analyze")))
+    , m_pathChooser(new Utils::PathChooser())
 {
     const QString toolTip = tr(
         "Hide top-level menus with advanced functionality to simplify the UI. <b>Build</b> is "
         "generally not required in the context of Qt Design Studio.<b>Debug</b> and <b>Analyze</b>"
         "are only required for debugging and profiling.");
 
-    QVBoxLayout *boxLayout = new QVBoxLayout(this);
+    QVBoxLayout *boxLayout = new QVBoxLayout();
     setLayout(boxLayout);
     auto groupBox = new QGroupBox(tr("Hide Menu"));
     groupBox->setToolTip(toolTip);
     boxLayout->addWidget(groupBox);
-    boxLayout->addSpacerItem(
-        new QSpacerItem(10, 10, QSizePolicy::Expanding, QSizePolicy::Expanding));
 
     auto verticalLayout = new QVBoxLayout();
     groupBox->setLayout(verticalLayout);
@@ -816,6 +828,28 @@ StudioSettingsPage::StudioSettingsPage()
     m_buildCheckBox->setChecked(hideBuildMenuSetting());
     m_debugCheckBox->setChecked(hideDebugMenuSetting());
     m_analyzeCheckBox->setChecked(hideAnalyzeMenuSetting());
+
+    auto examplesGroupBox = new QGroupBox(tr("Examples"));
+    boxLayout->addWidget(examplesGroupBox);
+
+    auto horizontalLayout = new QHBoxLayout();
+    examplesGroupBox->setLayout(horizontalLayout);
+
+    auto label = new QLabel(tr("Examples path:"));
+    m_pathChooser->setFilePath(Utils::FilePath::fromString(examplesPathSetting()));
+    auto resetButton = new QPushButton(tr("Reset Path"));
+
+    connect(resetButton, &QPushButton::clicked, this, [this]() {
+        m_pathChooser->setFilePath(defaultExamplesPath);
+    });
+
+    horizontalLayout->addWidget(label);
+    horizontalLayout->addWidget(m_pathChooser);
+    horizontalLayout->addWidget(resetButton);
+
+
+    boxLayout->addSpacerItem(
+        new QSpacerItem(10, 10, QSizePolicy::Expanding, QSizePolicy::Expanding));
 }
 
 void StudioSettingsPage::apply()
@@ -840,6 +874,14 @@ void StudioSettingsPage::apply()
         Core::RestartDialog restartDialog(Core::ICore::dialogParent(), restartText);
         restartDialog.exec();
     }
+
+    QSettings *s = Core::ICore::settings();
+    const QString value = m_pathChooser->filePath().toString();
+
+    if (s->value(EXAMPLES_DOWNLOAD_PATH, false).toString() != value) {
+        s->setValue(EXAMPLES_DOWNLOAD_PATH, value);
+        emit s_pluginInstance->examplesDownloadPathChanged(value);
+    }
 }
 
 StudioWelcomeSettingsPage::StudioWelcomeSettingsPage()

src/plugins/studiowelcome/studiowelcomeplugin.h

@@ -27,6 +27,7 @@
 
 #include <extensionsystem/iplugin.h>
 #include <coreplugin/dialogs/ioptionspage.h>
+#include <utils/pathchooser.h>
 
 #include <QTimer>
 
@@ -35,6 +36,8 @@ QT_FORWARD_DECLARE_CLASS(QCheckBox)
 namespace StudioWelcome {
 namespace Internal {
 
+const char EXAMPLES_DOWNLOAD_PATH[] = "StudioWelcome/ExamplesDownloadPath";
+
 class StudioSettingsPage : public Core::IOptionsPageWidget
 {
 public:
@@ -46,6 +49,7 @@ private:
     QCheckBox *m_buildCheckBox;
     QCheckBox *m_debugCheckBox;
     QCheckBox *m_analyzeCheckBox;
+    Utils::PathChooser *m_pathChooser;
 };
 
 class StudioWelcomeSettingsPage : public Core::IOptionsPage
@@ -76,6 +80,9 @@ public:
     void pauseRemoveSplashTimer();
     void resumeRemoveSplashTimer();
 
+signals:
+    void examplesDownloadPathChanged(const QString &path);
+
 private:
     class WelcomeMode *m_welcomeMode = nullptr;
     QTimer m_removeSplashTimer;