wrote viewmodel model for project browsing

app/project/item.cpp

@@ -0,0 +1,64 @@
+#include "item.h"
+
+Item::Item() :
+  parent_(nullptr)
+{
+}
+
+Item::~Item()
+{
+}
+
+void Item::add_child(Item* c)
+{
+  if (c->parent_ == this) {
+    return;
+  }
+
+  children_.append(c);
+  c->parent_ = this;
+}
+
+void Item::remove_child(Item *c)
+{
+  if (c->parent_ != this) {
+    return;
+  }
+
+  children_.removeAll(c);
+  c->parent_ = nullptr;
+}
+
+int Item::child_count()
+{
+  return children_.size();
+}
+
+Item *Item::child(int i)
+{
+  return children_.at(i);
+}
+
+const QString &Item::name() const
+{
+  return name_;
+}
+
+void Item::set_name(const QString &n)
+{
+  name_ = n;
+}
+
+Item *Item::parent() const
+{
+  return parent_;
+}
+
+void Item::set_parent(Item *p)
+{
+  if (parent_ != nullptr) {
+    parent_->remove_child(this);
+  }
+
+  p->add_child(this);
+}