Add logic for selecting currently active window at startup

mainwindow.cpp

@@ -4,6 +4,7 @@
 #include "tree/SwayTreeModel.h"
 #include <QScreen>
 #include <QTimer>
+#include <iostream>
 
 MainWindow::MainWindow(QWidget *parent)
         : QMainWindow(parent), ui(new Ui::MainWindow) {
@@ -18,6 +19,9 @@ MainWindow::MainWindow(QWidget *parent)
     ui->treeView->setModel(model);
     ui->treeView->expandAll();
 
+    ui->treeView->setSelectionMode(QAbstractItemView::ExtendedSelection);
+    ui->treeView->selectionModel()->select(model->getFocused(), QItemSelectionModel::ClearAndSelect);
+
     for (int c = 0; c < model->columnCount(); ++c)
         ui->treeView->resizeColumnToContents(c);
 }
@@ -29,5 +33,6 @@ MainWindow::~MainWindow() {
 }
 
 void MainWindow::update() {
+    std::cout << ui->treeView->currentIndex().parent().row() << "\n";
     // model->update();
 }

tree/AbstractTreeModel.h

@@ -12,8 +12,7 @@
 template<class T>
 class AbstractTreeModel : public QAbstractItemModel {
     static_assert(std::is_base_of<AbstractTreeNode<T>, T>::value,
-                  "Tree model subject class is not derived from AbstractTreeNode");
-
+                  "Tree node subject class is not derived from AbstractTreeNode");
 public:
     Q_DISABLE_COPY_MOVE(AbstractTreeModel)
 

tree/AbstractTreeNode.h

@@ -19,7 +19,7 @@ public:
 
     explicit AbstractTreeNode(T *parent = nullptr) : parent(parent) {}
 
-    [[nodiscard]] T *parentItem() { return parent; };
+    [[nodiscard]] T *parentItem() const { return parent; };
 
     [[nodiscard]] size_t childCount() const { return children.size(); };
 
@@ -31,7 +31,7 @@ public:
 
     [[nodiscard]] virtual int columnCount() const = 0;
 
-    [[nodiscard]] int row() {
+    [[nodiscard]] int row() const {
         if (parent == nullptr)
             return 0;
         const auto it = std::find_if(parent->children.cbegin(), parent->children.cend(),
@@ -46,7 +46,7 @@ public:
 
     void appendChild(std::unique_ptr<T> &child) { children.push_back(std::move(child)); }
 
-    [[nodiscard]] T* findChild(std::function<bool(const T &)> test) {
+    [[nodiscard]] T *findChild(std::function<bool(const T &)> test) const {
 
         for (int i = 0; i < childCount(); ++i) {
             auto* c = child(i);
@@ -56,6 +56,19 @@ public:
         return nullptr;
     };
 
+    [[nodiscard]] const T *findChildRecursive(std::function<bool(const T *)> test) const {
+        if (test((const T *) this))
+            return (const T*) this;
+
+        for (int i = 0; i < childCount(); ++i) {
+            auto *c = child(i);
+            const T *r = c->findChildRecursive(test);
+            if (r != nullptr)
+                return r;
+        }
+        return nullptr;
+    };
+
     void removeChild(int i) {
         if (i >= 0 && i < childCount()) {
             children.erase(std::next(children.begin(), i));

tree/SwayTreeModel.cpp

@@ -3,3 +3,24 @@
 //
 
 #include "SwayTreeModel.h"
+
+QModelIndex SwayTreeModel::getFocused() const {
+
+    std::function<bool(const SwayTreeNode *)> test = [](const SwayTreeNode *node) {
+        return node->node.focused;
+    };
+    const SwayTreeNode *focused = rootItem->findChildRecursive(test);
+
+    std::vector<int> indices;
+    for (const auto *head = focused; head != nullptr; head = head->parentItem()) {
+        indices.insert(indices.cbegin(), head->row());
+    }
+
+    // weirdness, idk... ask QT
+    QModelIndex idx = this->index(indices.size() < 2 ? 0 : indices[1], 0);
+    for (int i = 2; i < indices.size(); ++i) {
+        idx = this->index(indices[i], 0, idx);
+    }
+
+    return idx;
+}

tree/SwayTreeModel.h

@@ -42,6 +42,9 @@ public:
     };
 
 
+    [[nodiscard]] QModelIndex getFocused() const;
+
+
 private:
     SwayTreeNode * rootItem;
 };

tree/swaytree.h

@@ -114,6 +114,10 @@ struct SwayRecord {
     [[nodiscard]] bool operator==(const SwayRecord &other) const {
         return this->id == other.id;
     }
+
+    [[nodiscard]] bool isFocused() const  {
+        return focused;
+    }
 };
 
 class SwayTreeNode : public AbstractTreeNode<SwayTreeNode> {