Git: Rework branch dialog

* Make adding new branches more discoverable
 * Make adding tracking branches more discoverable
 * Update UI

Task-number: QTCREATORBUG-4943
Task-number: QTCREATORBUG-4944
Change-Id: Idcbf5f8321a3bd04c925e33d094bb479788a7d9b
Reviewed-on: http://codereview.qt.nokia.com/588
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>

src/plugins/git/branchadddialog.cpp

@@ -0,0 +1,47 @@
+#include "branchadddialog.h"
+#include "ui_branchadddialog.h"
+
+namespace Git {
+namespace Internal {
+
+BranchAddDialog::BranchAddDialog(QWidget *parent) :
+    QDialog(parent),
+    m_ui(new Ui::BranchAddDialog)
+{
+    m_ui->setupUi(this);
+}
+
+BranchAddDialog::~BranchAddDialog()
+{
+    delete m_ui;
+}
+
+void BranchAddDialog::setBranchName(const QString &n)
+{
+    m_ui->branchNameEdit->setText(n);
+    m_ui->branchNameEdit->selectAll();
+}
+
+QString BranchAddDialog::branchName() const
+{
+    return m_ui->branchNameEdit->text();
+}
+
+void BranchAddDialog::setTrackedBranchName(const QString &name, bool remote)
+{
+    m_ui->trackingCheckBox->setVisible(true);
+    if (!name.isEmpty())
+        m_ui->trackingCheckBox->setText(remote ? tr("Track remote branch \'%1\'").arg(name) :
+                                                 tr("Track local branch \'%1\'").arg(name));
+    else
+        m_ui->trackingCheckBox->setVisible(false);
+    m_ui->trackingCheckBox->setChecked(remote);
+}
+
+bool BranchAddDialog::track()
+{
+    return m_ui->trackingCheckBox->isVisible() && m_ui->trackingCheckBox->isChecked();
+}
+
+} // namespace Internal
+} // namespace Git