fix: Polish usage in some cases

Also fiz some typos

launcher/ui/dialogs/FilterModsDialog.cpp

@@ -2,7 +2,7 @@
 #include "ui_FilterModsDialog.h"
 
 FilterModsDialog::FilterModsDialog(Version def, QWidget* parent)
-    : QDialog(parent), m_filter(new Filter()), ui(new Ui::FilterModsDialog)
+    : QDialog(parent), m_filter(new Filter()), m_internal_filter(new Filter()), ui(new Ui::FilterModsDialog)
 {
     ui->setupUi(this);
 
@@ -13,28 +13,44 @@ FilterModsDialog::FilterModsDialog(Version def, QWidget* parent)
 
     connect(&m_mcVersion_buttons, SIGNAL(idClicked(int)), this, SLOT(onVersionFilterChanged(int)));
 
-    m_filter->versions.push_front(def);
+    m_internal_filter->versions.push_front(def);
+    commitChanges();
 }
 
 int FilterModsDialog::execWithInstance(MinecraftInstance* instance)
 {
     m_instance = instance;
 
+    auto* pressed_button = m_mcVersion_buttons.checkedButton();
+
     // Fix first openening behaviour
-    onVersionFilterChanged(0);
+    onVersionFilterChanged(m_previous_mcVersion_id);
 
     auto mcVersionSplit = mcVersionStr().split(".");
 
     ui->strictVersionButton->setText(
         tr("Strict match (= %1)").arg(mcVersionStr()));
     ui->majorVersionButton->setText(
-        tr("Major varsion match (= %1.%2.x)").arg(mcVersionSplit[0], mcVersionSplit[1]));
+        tr("Major version match (= %1.%2.x)").arg(mcVersionSplit[0], mcVersionSplit[1]));
     ui->allVersionsButton->setText(
-        tr("Any version match"));
+        tr("Any version"));
     //ui->betweenVersionsButton->setText(
     //    tr("Between two versions"));
 
     int ret = QDialog::exec();
+
+    if(ret == QDialog::DialogCode::Accepted){
+        // If there's no change, let's sey it's a cancel to the caller
+        if(*m_internal_filter.get() == *m_filter.get())
+            return QDialog::DialogCode::Rejected;
+
+        m_previous_mcVersion_id = (VersionButtonID) m_mcVersion_buttons.checkedId();
+        commitChanges();
+    } else {
+        pressed_button->click();
+        revertChanges();
+    }
+
     m_instance = nullptr;
     return ret;
 }
@@ -59,6 +75,16 @@ void FilterModsDialog::disableVersionButton(VersionButtonID id)
     }
 }
 
+// Do deep copy
+void FilterModsDialog::commitChanges()
+{
+    m_filter->versions = m_internal_filter->versions;
+}
+void FilterModsDialog::revertChanges()
+{
+    m_internal_filter->versions = m_filter->versions;
+}
+
 void FilterModsDialog::onVersionFilterChanged(int id)
 {
     //ui->lowerVersionComboBox->setEnabled(id == VersionButtonID::Between);
@@ -67,15 +93,15 @@ void FilterModsDialog::onVersionFilterChanged(int id)
     auto versionSplit = mcVersionStr().split(".");
     int index = 0;
 
-    m_filter->versions.clear();
+    m_internal_filter->versions.clear();
 
     switch(id){
     case(VersionButtonID::Strict):
-        m_filter->versions.push_front(mcVersion());
+        m_internal_filter->versions.push_front(mcVersion());
         break;
     case(VersionButtonID::Major):
         for(auto i = Version(QString("%1.%2").arg(versionSplit[0], versionSplit[1])); i <= mcVersion(); index++){
-            m_filter->versions.push_front(i);
+            m_internal_filter->versions.push_front(i);
             i = Version(QString("%1.%2.%3").arg(versionSplit[0], versionSplit[1], QString("%1").arg(index)));
         }
         break;

launcher/ui/dialogs/FilterModsDialog.h

@@ -26,9 +26,13 @@ public:
 
     struct Filter {
         std::list<Version> versions;
+
+        bool operator==(const Filter& other) const { return versions == other.versions; }
+        bool operator!=(const Filter& other) const { return !(*this == other); }
     };
 
     std::shared_ptr<Filter> m_filter;
+    std::shared_ptr<Filter> m_internal_filter;
 
 public:
     explicit FilterModsDialog(Version def, QWidget* parent = nullptr);
@@ -45,6 +49,9 @@ private:
     inline auto mcVersionStr() const -> QString { return m_instance ? m_instance->getPackProfile()->getComponentVersion("net.minecraft") : ""; }
     inline auto mcVersion() const -> Version { return { mcVersionStr() }; }
 
+    void commitChanges();
+    void revertChanges();
+
 private slots:
     void onVersionFilterChanged(int id);
 
@@ -54,4 +61,5 @@ private:
     MinecraftInstance* m_instance = nullptr;
 
     QButtonGroup m_mcVersion_buttons;
+    VersionButtonID m_previous_mcVersion_id = VersionButtonID::Strict;
 };