Add "Open Terminal" to EnvironmentWidget

Add a "Open Terminal" button to the environment widget. This opens
a terminal with the environment set up in the current working directory
of Qt Creator.

Task-number: QTCREATORBUG-19692
Change-Id: I33f60969d2a05a15f6f8fc1051f255e6c64f1e58
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/libs/utils/environmentmodel.cpp

@@ -129,6 +129,11 @@ bool EnvironmentModel::changes(const QString &name) const
     return d->findInChanges(name) >= 0;
 }
 
+Environment EnvironmentModel::baseEnvironment() const
+{
+    return d->m_baseEnvironment;
+}
+
 QVariant EnvironmentModel::data(const QModelIndex &index, int role) const
 {
     if (!index.isValid())

src/libs/utils/environmentmodel.h

@@ -60,6 +60,7 @@ public:
     QString indexToVariable(const QModelIndex &index) const;
     QModelIndex variableToIndex(const QString &name) const;
     bool changes(const QString &key) const;
+    Environment baseEnvironment() const;
     void setBaseEnvironment(const Environment &env);
     QList<EnvironmentItem> userChanges() const;
     void setUserChanges(QList<EnvironmentItem> list);

src/plugins/projectexplorer/environmentwidget.cpp

@@ -25,6 +25,7 @@
 
 #include "environmentwidget.h"
 
+#include <coreplugin/fileutils.h>
 #include <coreplugin/find/itemviewfind.h>
 
 #include <utils/detailswidget.h>
@@ -35,6 +36,7 @@
 #include <utils/itemviews.h>
 #include <utils/tooltip/tooltip.h>
 
+#include <QDir>
 #include <QString>
 #include <QPushButton>
 #include <QTreeView>
@@ -129,6 +131,7 @@ public:
     QPushButton *m_resetButton;
     QPushButton *m_unsetButton;
     QPushButton *m_batchEditButton;
+    QPushButton *m_terminalButton;
 };
 
 EnvironmentWidget::EnvironmentWidget(QWidget *parent, QWidget *additionalDetailsWidget)
@@ -201,6 +204,11 @@ EnvironmentWidget::EnvironmentWidget(QWidget *parent, QWidget *additionalDetails
     d->m_batchEditButton->setText(tr("&Batch Edit..."));
     buttonLayout->addWidget(d->m_batchEditButton);
 
+    d->m_terminalButton = new QPushButton(this);
+    d->m_terminalButton->setText(tr("Open &Terminal"));
+    d->m_terminalButton->setToolTip(tr("Open a terminal with this environment set up."));
+    buttonLayout->addWidget(d->m_terminalButton);
+
     buttonLayout->addStretch();
 
     horizontalLayout->addLayout(buttonLayout);
@@ -224,6 +232,9 @@ EnvironmentWidget::EnvironmentWidget(QWidget *parent, QWidget *additionalDetails
     connect(d->m_environmentView->selectionModel(), &QItemSelectionModel::currentChanged,
             this, &EnvironmentWidget::environmentCurrentIndexChanged);
 
+    connect(d->m_terminalButton, &QAbstractButton::clicked,
+            this, &EnvironmentWidget::openTerminal);
+
     connect(d->m_detailsContainer, &Utils::DetailsWidget::linkActivated,
             this, &EnvironmentWidget::linkActivated);
 
@@ -356,6 +367,13 @@ void EnvironmentWidget::batchEditEnvironmentButtonClicked()
     d->m_model->setUserChanges(newChanges);
 }
 
+void EnvironmentWidget::openTerminal()
+{
+    Utils::Environment env = d->m_model->baseEnvironment();
+    env.modify(d->m_model->userChanges());
+    Core::FileUtils::openTerminal(QDir::currentPath(), env);
+}
+
 void EnvironmentWidget::environmentCurrentIndexChanged(const QModelIndex &current)
 {
     if (current.isValid()) {

src/plugins/projectexplorer/environmentwidget.h

@@ -66,6 +66,7 @@ private:
     void removeEnvironmentButtonClicked();
     void unsetEnvironmentButtonClicked();
     void batchEditEnvironmentButtonClicked();
+    void openTerminal();
     void environmentCurrentIndexChanged(const QModelIndex &current);
     void invalidateCurrentIndex();
     void updateSummaryText();