feat: add initial filtering function

Signed-off-by: Sefa Eyeoglu <contact@scrumplex.net>

launcher/ui/MainWindow.cpp

@@ -52,7 +52,6 @@
 
 #include <QApplication>
 #include <QButtonGroup>
-#include <QHBoxLayout>
 #include <QHeaderView>
 #include <QMainWindow>
 #include <QToolBar>
@@ -61,11 +60,13 @@
 #include <QMenuBar>
 #include <QMessageBox>
 #include <QInputDialog>
+#include <QLineEdit>
 #include <QLabel>
 #include <QToolButton>
 #include <QWidgetAction>
 #include <QProgressDialog>
 #include <QShortcut>
+#include <QVBoxLayout>
 
 #include <BaseInstance.h>
 #include <InstanceList.h>
@@ -263,7 +264,7 @@ public:
     QVector<TranslatedToolButton *> all_toolbuttons;
 
     QWidget *centralWidget = nullptr;
-    QHBoxLayout *horizontalLayout = nullptr;
+    QVBoxLayout *verticalLayout = nullptr;
 
     QMenuBar *menuBar = nullptr;
     QMenu *fileMenu;
@@ -804,11 +805,11 @@ public:
 
         centralWidget = new QWidget(MainWindow);
         centralWidget->setObjectName(QStringLiteral("centralWidget"));
-        horizontalLayout = new QHBoxLayout(centralWidget);
-        horizontalLayout->setSpacing(0);
-        horizontalLayout->setObjectName(QStringLiteral("horizontalLayout"));
-        horizontalLayout->setSizeConstraint(QLayout::SetDefaultConstraint);
-        horizontalLayout->setContentsMargins(0, 0, 0, 0);
+        verticalLayout = new QVBoxLayout(centralWidget);
+        verticalLayout->setSpacing(0);
+        verticalLayout->setObjectName(QStringLiteral("horizontalLayout"));
+        verticalLayout->setSizeConstraint(QLayout::SetDefaultConstraint);
+        verticalLayout->setContentsMargins(0, 0, 0, 0);
         MainWindow->setCentralWidget(centralWidget);
 
         createNewsToolbar(MainWindow);
@@ -870,13 +871,21 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new MainWindow
         updateNewsLabel();
     }
 
+    // Create instance list filter box
+    {
+        filterView = new QLineEdit(ui->centralWidget);
+
+        ui->verticalLayout->addWidget(filterView);
+    }
+
     // Create the instance list widget
     {
         view = new InstanceView(ui->centralWidget, APPLICATION->instances().get());
 
         connect(view, &InstanceView::showContextMenu, this, &MainWindow::showInstanceContextMenu);
+        connect(filterView, &QLineEdit::textEdited, view, &InstanceView::setFilterQuery);
 
-        ui->horizontalLayout->addWidget(view);
+        ui->verticalLayout->addWidget(view);
     }
     // The cat background
     {

launcher/ui/MainWindow.h

@@ -55,6 +55,7 @@ class NewsChecker;
 class QToolButton;
 class LabeledToolButton;
 class QLabel;
+class QLineEdit;
 class InstanceView;
 class MinecraftLauncher;
 class BaseProfilerFactory;
@@ -220,6 +221,7 @@ private:
 
     // these are managed by Qt's memory management model!
     InstanceView *view = nullptr;
+    QLineEdit *filterView = nullptr;
     QToolButton *newsLabel = nullptr;
     QMenu *accountMenu = nullptr;
     QToolButton *accountMenuButton = nullptr;

launcher/ui/instanceview/InstanceTableProxyModel.cpp

@@ -20,6 +20,7 @@
 #include "InstanceList.h"
 
 #include <QFont>
+#include <QRegularExpression>
 #include <QVariant>
 
 InstanceTableProxyModel::InstanceTableProxyModel(QObject* parent) : QSortFilterProxyModel(parent)
@@ -79,3 +80,58 @@ QVariant InstanceTableProxyModel::data(const QModelIndex& index, int role) const
     }
     return data;
 }
+
+void InstanceTableProxyModel::setFilterQuery(const QString query)
+{
+    QList<InstanceFilterQuery> foo = parseFilterQuery(query);
+    setFilterQuery(foo);
+}
+
+void InstanceTableProxyModel::setFilterQuery(const QList<InstanceFilterQuery> query)
+{
+    m_filter = query;
+    invalidateFilter();
+}
+
+bool InstanceTableProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex& sourceParent) const
+{
+    if (m_filter.isEmpty())
+        return true;
+
+    for (const InstanceFilterQuery& q : m_filter) {
+        const InstanceList::Column c = q.first;
+        const QString query = q.second;
+
+        QModelIndex index = sourceModel()->index(sourceRow, c, sourceParent);
+        QString content = sourceModel()->data(index).toString().toLower();
+
+        if (!query.isNull() && !content.contains(query))
+            return false;
+    }
+    return true;
+}
+
+QList<InstanceFilterQuery> InstanceTableProxyModel::parseFilterQuery(QString query)
+{
+    const QRegularExpression pattern = QRegularExpression("(?:(?<prefix>\\w+):)?(?:(?<content1>\\w+)|\"(?<content2>.+)\")");
+    QList<InstanceFilterQuery> queries;
+
+    QRegularExpressionMatchIterator it = pattern.globalMatch(query);
+    while (it.hasNext()) {
+        const QRegularExpressionMatch& match = it.next();
+        InstanceList::Column c = InstanceList::NameColumn;
+
+        QString prefix = match.captured("prefix");
+        if (prefix.toLower() == "category")
+            c = InstanceList::CategoryColumn;
+        else if (prefix.toLower() == "version")
+            c = InstanceList::GameVersionColumn;
+
+        QString content = match.captured("content1");
+        if (content.isNull())
+            content = match.captured("content2");
+
+        queries << std::make_pair(c, content.toLower());
+    }
+    return queries;
+}

launcher/ui/instanceview/InstanceTableProxyModel.h

@@ -15,18 +15,29 @@
 
 #pragma once
 
+#include "InstanceList.h"
+
 #include <QCollator>
 #include <QSortFilterProxyModel>
 
+typedef std::pair<InstanceList::Column, QString> InstanceFilterQuery;
+
 class InstanceTableProxyModel : public QSortFilterProxyModel {
     Q_OBJECT
 
    public:
     InstanceTableProxyModel(QObject* parent = 0);
 
+    void setFilterQuery(const QString query);
+    void setFilterQuery(const QList<InstanceFilterQuery> query);
+
+    static QList<InstanceFilterQuery> parseFilterQuery(const QString query);
+
    protected:
     QVariant data(const QModelIndex& index, int role) const override;
+    bool filterAcceptsRow(int sourceRow, const QModelIndex& sourceParent) const;
 
    private:
     QCollator m_naturalSort;
+    QList<InstanceFilterQuery> m_filter;
 };

launcher/ui/instanceview/InstanceView.cpp

@@ -221,6 +221,14 @@ QModelIndex InstanceView::mappedIndex(const QModelIndex& index) const
     return m_tableProxy->mapToSource(index);
 }
 
+void InstanceView::setFilterQuery(const QString& query)
+{
+    if (m_displayMode == DisplayMode::GridMode) {
+        return m_gridProxy->setFilterQuery(query);
+    }
+    return m_tableProxy->setFilterQuery(query);
+}
+
 void InstanceView::setCatDisplayed(bool enabled)
 {
     if (enabled) {

launcher/ui/instanceview/InstanceView.h

@@ -51,6 +51,7 @@ class InstanceView : public QStackedWidget {
     void storeState();
 
     void setCatDisplayed(bool enabled);
+    void setFilterQuery(const QString& query);
 
     void editSelected(InstanceList::Column targetColumn = InstanceList::NameColumn);