add context panel

app/gcompose/src/ContextPanel.cpp

@@ -0,0 +1,43 @@
+#include "ContextPanel.h"
+#include "ContextModel.h"
+#include <QVBoxLayout>
+#include <QHBoxLayout>
+#include <QLabel>
+#include <QTreeView>
+
+ContextPanel::ContextPanel(QWidget* parent) : QWidget(parent) {
+    m_layout = new QVBoxLayout(this);
+    m_layout->setContentsMargins(0, 0, 0, 0);
+    m_layout->setSpacing(0);
+
+    // Title bar setup
+    m_titleBar = new QWidget(this);
+    m_titleBar->setObjectName("PaneTitleBar");
+    m_titleBar->setFixedHeight(22);
+    
+    auto* titleLayout = new QHBoxLayout(m_titleBar);
+    titleLayout->setContentsMargins(5, 0, 5, 0);
+
+    m_titleLabel = new QLabel("Context Panel", m_titleBar);
+    m_titleLabel->setObjectName("TitleLabel");
+    titleLayout->addWidget(m_titleLabel);
+    titleLayout->addStretch();
+
+    m_layout->addWidget(m_titleBar);
+
+    m_treeView = new QTreeView(this);
+    m_treeView->setObjectName("ContextTree");
+    m_treeView->setHeaderHidden(false);
+    
+    m_model = new ContextModel(this);
+    m_treeView->setModel(m_model);
+
+    m_layout->addWidget(m_treeView);
+}
+
+ContextPanel::~ContextPanel() {}
+
+void ContextPanel::setContext(uLib::ObjectsContext* context) {
+    m_model->setContext(context);
+    m_treeView->expandAll();
+}