CMake: Do not run a cmake wizard all the time

Do not push the cmake running straight into the face of the user. Do it
in the background instead.

This needs some follow-up patches to become really useful.

Change-Id: I3457178b33e3f14bdeac25005a773d17abb73b65
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>

src/plugins/cmakeprojectmanager/builddirmanager.h

@@ -0,0 +1,116 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#ifndef CMAKE_BUILDDIRMANAGER_H
+#define CMAKE_BUILDDIRMANAGER_H
+
+#include "cmakecbpparser.h"
+#include "cmakeconfigitem.h"
+
+#include <projectexplorer/task.h>
+
+#include <utils/environment.h>
+#include <utils/qtcprocess.h>
+#include <utils/fileutils.h>
+
+#include <QByteArray>
+#include <QObject>
+#include <QSet>
+
+QT_FORWARD_DECLARE_CLASS(QTemporaryDir);
+QT_FORWARD_DECLARE_CLASS(QFileSystemWatcher);
+
+namespace ProjectExplorer {
+class FileNode;
+class Kit;
+} // namespace ProjectExplorer
+
+namespace CMakeProjectManager {
+
+class CMakeTool;
+
+namespace Internal {
+
+class BuildDirManager : public QObject
+{
+    Q_OBJECT
+
+public:
+    BuildDirManager(const Utils::FileName &sourceDir, const ProjectExplorer::Kit *k,
+                    const CMakeConfig &inputConfig, const Utils::Environment &env,
+                    const Utils::FileName &buildDir);
+    ~BuildDirManager() override;
+
+    const ProjectExplorer::Kit *kit() const { return m_kit; }
+    const Utils::FileName buildDirectory() const { return m_buildDir; }
+    const Utils::FileName sourceDirectory() const { return m_sourceDir; }
+    bool isBusy() const;
+
+    void parse();
+    void forceReparse();
+
+    bool isProjectFile(const Utils::FileName &fileName) const;
+    QString projectName() const;
+    QList<CMakeBuildTarget> buildTargets() const;
+    QList<ProjectExplorer::FileNode *> files() const;
+
+signals:
+    void parsingStarted() const;
+    void dataAvailable() const;
+    void errorOccured(const QString &err) const;
+
+private:
+    void extractData();
+
+    void startCMake(CMakeTool *tool, const QString &generator, const CMakeConfig &config);
+
+    void cmakeFinished(int code, QProcess::ExitStatus status);
+    void processCMakeOutput();
+
+    void processOutputLine(const QString &line);
+
+    const Utils::FileName m_sourceDir;
+    Utils::FileName m_buildDir;
+    const ProjectExplorer::Kit *const m_kit;
+    Utils::Environment m_environment;
+    CMakeConfig m_inputConfig;
+
+    QTemporaryDir *m_tempDir = nullptr;
+    Utils::QtcProcess *m_cmakeProcess = nullptr;
+
+    QSet<Utils::FileName> m_watchedFiles;
+    QString m_projectName;
+    QList<CMakeBuildTarget> m_buildTargets;
+    QFileSystemWatcher *m_watcher;
+    QList<ProjectExplorer::FileNode *> m_files;
+
+    // For error reporting:
+    ProjectExplorer::Task m_toReport;
+};
+
+} // namespace Internal
+} // namespace CMakeProjectManager
+
+#endif // CMAKE_BUILDDIRMANAGER_H