Add mod count to mods page

launcher/ui/pages/BasePage.h

@@ -35,15 +35,16 @@
 
 #pragma once
 
-#include <QString>
 #include <QIcon>
+#include <QString>
+#include <functional>
 #include <memory>
 
 #include "BasePageContainer.h"
 
-class BasePage
-{
-public:
+class BasePage {
+   public:
+    using updateExtraInfoFunc = std::function<void(QString)>;
     virtual ~BasePage() {}
     virtual QString id() const = 0;
     virtual QString displayName() const = 0;
@@ -63,17 +64,16 @@ class BasePage
     }
     virtual void openedImpl() {}
     virtual void closedImpl() {}
-    virtual void setParentContainer(BasePageContainer * container)
-    {
-        m_container = container;
-    };
-    virtual void retranslate() { }
+    virtual void setParentContainer(BasePageContainer* container) { m_container = container; };
+    virtual void retranslate() {}
 
-public:
+   public:
     int stackIndex = -1;
     int listIndex = -1;
-protected:
-    BasePageContainer * m_container = nullptr;
+    updateExtraInfoFunc updateExtraInfo;
+
+   protected:
+    BasePageContainer* m_container = nullptr;
     bool isOpened = false;
 };
 

launcher/ui/pages/instance/ExternalResourcesPage.cpp

@@ -9,6 +9,7 @@
 
 #include <QKeyEvent>
 #include <QMenu>
+#include <algorithm>
 
 ExternalResourcesPage::ExternalResourcesPage(BaseInstance* instance, std::shared_ptr<ResourceFolderModel> model, QWidget* parent)
     : QMainWindow(parent), m_instance(instance), ui(new Ui::ExternalResourcesPage), m_model(model)
@@ -43,6 +44,13 @@ ExternalResourcesPage::ExternalResourcesPage(BaseInstance* instance, std::shared
 
     auto selection_model = ui->treeView->selectionModel();
     connect(selection_model, &QItemSelectionModel::currentChanged, this, &ExternalResourcesPage::current);
+    auto updateExtra = [this]() {
+        if (updateExtraInfo)
+            updateExtraInfo(extraHeaderInfoString());
+    };
+    connect(selection_model, &QItemSelectionModel::selectionChanged, this, updateExtra);
+    connect(model.get(), &ResourceFolderModel::updateFinished, this, updateExtra);
+
     connect(ui->filterEdit, &QLineEdit::textChanged, this, &ExternalResourcesPage::filterTextChanged);
 }
 
@@ -248,6 +256,15 @@ bool ExternalResourcesPage::onSelectionChanged(const QModelIndex& current, const
     int row = sourceCurrent.row();
     Resource const& resource = m_model->at(row);
     ui->frame->updateWithResource(resource);
-
     return true;
 }
+
+QString ExternalResourcesPage::extraHeaderInfoString()
+{
+    if (ui && ui->treeView && ui->treeView->selectionModel()) {
+        auto selection = m_filterModel->mapSelectionToSource(ui->treeView->selectionModel()->selection()).indexes();
+        if (auto count = std::count_if(selection.cbegin(), selection.cend(), [](auto v) { return v.column() == 0; }); count != 0)
+            return tr("[%1 installed, %2 selected]").arg(m_model->size()).arg(count);
+    }
+    return tr("[%1 installed]").arg(m_model->size());
+}

launcher/ui/pages/instance/ExternalResourcesPage.h

@@ -29,6 +29,7 @@ class ExternalResourcesPage : public QMainWindow, public BasePage {
     virtual QString helpPage() const override = 0;
 
     virtual bool shouldDisplay() const override = 0;
+    QString extraHeaderInfoString();
 
     void openedImpl() override;
     void closedImpl() override;

launcher/ui/widgets/PageContainer.cpp

@@ -93,6 +93,10 @@ PageContainer::PageContainer(BasePageProvider *pageProvider, QString defaultId,
         page->listIndex = counter;
         page->setParentContainer(this);
         counter++;
+        page->updateExtraInfo = [this](QString info) {
+            if (m_currentPage)
+                m_header->setText(m_currentPage->displayName() + info);
+        };
     }
     m_model->setPages(pages);