ui: basic search view

- Added a basic SearchView (+ controller and qt implementation)
- SearchView can set the active element of other views by dispatching a message.
- SearchView adjusts its text when the active element is changed by other views.
- Added wrappers for Button and EditBox that allow the usage of simple callback functions.

src/app/qt/view/QtSearchView.cpp

@@ -0,0 +1,58 @@
+#include "qt/view/QtSearchView.h"
+
+#include <QtWidgets>
+
+#include "qt/element/QtButton.h"
+#include "qt/element/QtEditBox.h"
+#include "qt/QtWidgetWrapper.h"
+#include "qt/utility/utilityQt.h"
+#include "component/controller/SearchController.h"
+
+QtSearchView::QtSearchView(ViewLayout* viewLayout)
+	: SearchView(viewLayout)
+{
+}
+
+QtSearchView::~QtSearchView()
+{
+}
+
+void QtSearchView::createWidgetWrapper()
+{
+	setWidgetWrapper(std::make_shared<QtWidgetWrapper>(std::make_shared<QFrame>()));
+}
+
+void QtSearchView::initGui()
+{
+	QWidget* widget = QtWidgetWrapper::getWidgetOfView(this);
+	utility::setWidgetBackgroundColor(widget, Colori(190, 190, 190, 255));
+
+	QBoxLayout* layout = new QBoxLayout(QBoxLayout::LeftToRight);
+	layout->setSpacing(3);
+	layout->setContentsMargins(3, 3, 3, 3);
+	widget->setLayout(layout);
+
+	m_searchBox = new QtEditBox(widget);
+	m_searchBox->setPlaceholderText("Please enter your search string.");
+	m_searchBox->setCallbackOnReturnPressed(std::bind(&QtSearchView::onSeachButtonClick, this));
+
+	m_searchButton = new QtButton(widget);
+	m_searchButton->setText("Search");
+	m_searchButton->setCallbackOnClick(std::bind(&QtSearchView::onSeachButtonClick, this));
+
+	widget->layout()->addWidget(m_searchBox);
+	widget->layout()->addWidget(m_searchButton);
+}
+
+void QtSearchView::setText(const std::string& s) const
+{
+	if (m_searchBox->text() != s.c_str())
+	{
+		m_searchBox->setText(s.c_str());
+	}
+}
+
+void QtSearchView::onSeachButtonClick()
+{
+	getController()->search(m_searchBox->text().toStdString());
+}