cmake-gui: Add button to open the generated project

Look for VS or Xcode project files at the top of the build tree.
If present, enable an "Open Project" button to open them through
the OS desktop services.

Help/release/dev/cmake-gui-open-project.rst

@@ -0,0 +1,5 @@
+cmake-gui-open-project
+----------------------
+
+* :manual:`cmake-gui(1)` gained a button to open the generated project file
+  for :ref:`Visual Studio Generators` and the :generator:`Xcode` generator.

Source/QtDialog/CMakeSetupDialog.cxx

@@ -14,6 +14,7 @@
 
 #include <QCloseEvent>
 #include <QCoreApplication>
+#include <QDesktopServices>
 #include <QDialogButtonBox>
 #include <QDragEnterEvent>
 #include <QFileDialog>
@@ -227,6 +228,8 @@ void CMakeSetupDialog::initialize()
 
   QObject::connect(this->GenerateButton, SIGNAL(clicked(bool)), this,
                    SLOT(doGenerate()));
+  QObject::connect(this->OpenProjectButton, SIGNAL(clicked(bool)), this,
+                   SLOT(doOpenProject()));
 
   QObject::connect(this->BrowseSourceDirectoryButton, SIGNAL(clicked(bool)),
                    this, SLOT(doSourceBrowse()));
@@ -499,6 +502,26 @@ void CMakeSetupDialog::doGenerate()
   this->ConfigureNeeded = true;
 }
 
+QString CMakeSetupDialog::getProjectFilename()
+{
+  QStringList nameFilter;
+  nameFilter << "*.sln"
+             << "*.xcodeproj";
+  QDir directory(this->BinaryDirectory->currentText());
+  QStringList nlnFile = directory.entryList(nameFilter);
+
+  if (nlnFile.count() == 1) {
+    return this->BinaryDirectory->currentText() + "/" + nlnFile.at(0);
+  }
+
+  return QString();
+}
+
+void CMakeSetupDialog::doOpenProject()
+{
+  QDesktopServices::openUrl(QUrl::fromLocalFile(this->getProjectFilename()));
+}
+
 void CMakeSetupDialog::closeEvent(QCloseEvent* e)
 {
   // prompt for close if there are unsaved changes, and we're not busy
@@ -617,6 +640,11 @@ void CMakeSetupDialog::updateBinaryDirectory(const QString& dir)
     this->BinaryDirectory->setEditText(dir);
     this->BinaryDirectory->blockSignals(false);
   }
+  if (!this->getProjectFilename().isEmpty()) {
+    this->OpenProjectButton->setEnabled(true);
+  } else {
+    this->OpenProjectButton->setEnabled(false);
+  }
 }
 
 void CMakeSetupDialog::doBinaryBrowse()
@@ -1002,22 +1030,28 @@ void CMakeSetupDialog::enterState(CMakeSetupDialog::State s)
   if (s == Interrupting) {
     this->ConfigureButton->setEnabled(false);
     this->GenerateButton->setEnabled(false);
+    this->OpenProjectButton->setEnabled(false);
   } else if (s == Configuring) {
     this->setEnabledState(false);
     this->GenerateButton->setEnabled(false);
     this->GenerateAction->setEnabled(false);
+    this->OpenProjectButton->setEnabled(false);
     this->ConfigureButton->setText(tr("&Stop"));
   } else if (s == Generating) {
     this->CacheModified = false;
     this->setEnabledState(false);
     this->ConfigureButton->setEnabled(false);
     this->GenerateAction->setEnabled(false);
+    this->OpenProjectButton->setEnabled(false);
     this->GenerateButton->setText(tr("&Stop"));
   } else if (s == ReadyConfigure) {
     this->setEnabledState(true);
     this->GenerateButton->setEnabled(true);
     this->GenerateAction->setEnabled(true);
     this->ConfigureButton->setEnabled(true);
+    if (!this->getProjectFilename().isEmpty()) {
+      this->OpenProjectButton->setEnabled(true);
+    }
     this->ConfigureButton->setText(tr("&Configure"));
     this->GenerateButton->setText(tr("&Generate"));
   } else if (s == ReadyGenerate) {
@@ -1025,6 +1059,9 @@ void CMakeSetupDialog::enterState(CMakeSetupDialog::State s)
     this->GenerateButton->setEnabled(true);
     this->GenerateAction->setEnabled(true);
     this->ConfigureButton->setEnabled(true);
+    if (!this->getProjectFilename().isEmpty()) {
+      this->OpenProjectButton->setEnabled(true);
+    }
     this->ConfigureButton->setText(tr("&Configure"));
     this->GenerateButton->setText(tr("&Generate"));
   }

Source/QtDialog/CMakeSetupDialog.h

@@ -41,6 +41,8 @@ protected slots:
   void initialize();
   void doConfigure();
   void doGenerate();
+  QString getProjectFilename();
+  void doOpenProject();
   void doInstallForCommandLine();
   void doHelp();
   void doAbout();

Source/QtDialog/CMakeSetupDialog.ui

@@ -238,6 +238,13 @@
            </property>
           </widget>
          </item>
+          <item>
+            <widget class="QPushButton" name="OpenProjectButton">
+              <property name="text">
+                <string>Open &amp;Project</string>
+              </property>
+            </widget>
+          </item>
          <item>
           <widget class="QLabel" name="Generator">
            <property name="text">