mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
  ui->setupUi(this);
  auto g1 = root.add("Simple types");
  g1->add("bool");
  g1->add("int");
  g1->add("float");
  g1->add("double");
  auto g2 = root.add("Structured types");
  auto g3 = g2->add("Array");
  g3->add("Static");
  g3->add("Dynamic");
  g2->add("Class");

  m_adapter.reset(new VirtualPartAdapter(root));
  m_treeModel.reset(new VirtualTreeModel(m_adapter.get()));
  ui->treeView->setModel(m_treeModel.get());
}

MainWindow::~MainWindow()
{
  ui->treeView->setModel(nullptr);
  delete ui;
}

VirtualPartAdapter::VirtualPartAdapter(Part &root) : m_root(root)
{

}

QVariant VirtualPartAdapter::data(void *item, int role)
{
  auto value = getValue(item);
  if (role == Qt::DisplayRole)
  {
    return value->name;
  }
  else
  {
    return QVariant();
  }
}

void *VirtualPartAdapter::getItemParent(void *item)
{
  return item ? reinterpret_cast<Part*>(item)->parent : nullptr;
}

void *VirtualPartAdapter::getItem(void *parent, int index)
{
  return getValue(parent)->subParts[index].get();
}

Part * VirtualPartAdapter::getValue(void * data)
{
  return data ? reinterpret_cast<Part*>(data) : &m_root;
}

int VirtualPartAdapter::getItemsCount(void *parent)
{
  return static_cast<int>(getValue(parent)->subParts.size());
}

void MainWindow::on_actionAdd_group_triggered()
{
  // we can update data inside beginUpdate / endUpdate block
  m_adapter->beginUpdate();
  Part* cur = currentPart();
  cur = cur ? cur : &root;
  auto g1 = cur->add("NewType");
  g1->add("my class");
  g1->add("my struct");
  m_adapter->endUpdate();

  ui->treeView->setCurrentIndex(m_treeModel->getItemIndex(g1));
}

void MainWindow::on_actionRemove_current_triggered()
{
  Part *part = currentPart();
  if (part && part != &root)
  {
    // we can simply notify view about changes
    m_treeModel->QueuedUpdate();
    part->parent->remove(part);
  }
}

Part *MainWindow::currentPart()
{
  return m_adapter->getValue(m_treeModel->getItem(ui->treeView->currentIndex()));
}

void MainWindow::on_actionRemove_model_triggered()
{
    m_treeModel->setModelAdapter(nullptr);
}

void MainWindow::on_actionAssign_adapter_triggered()
{
    m_treeModel->setModelAdapter(m_adapter.get());
}

void MainWindow::on_actionRemove_adapter_triggered()
{
    m_treeModel->setModelAdapter(nullptr);
}