Split general settings page in two

It was too crowded to add anything to it. Split it into "interface" and
"system" related pages.

Change-Id: I2aa7984de4d672ca000e991b0cfb32a3f706c988
Reviewed-by: Daniel Teske <daniel.teske@theqtcompany.com>

src/plugins/coreplugin/systemsettings.cpp

@@ -0,0 +1,199 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://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 http://www.qt.io/terms-conditions.  For further information
+** use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, The Qt Company gives you certain additional
+** rights.  These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include "systemsettings.h"
+#include "coreconstants.h"
+#include "editormanager/editormanager_p.h"
+#include "icore.h"
+#include "patchtool.h"
+#include "vcsmanager.h"
+
+#include <utils/checkablemessagebox.h>
+#include <utils/consoleprocess.h>
+#include <utils/environment.h>
+#include <utils/hostosinfo.h>
+#include <utils/unixutils.h>
+
+#include <QCoreApplication>
+#include <QMessageBox>
+#include <QSettings>
+
+#include "ui_systemsettings.h"
+
+using namespace Utils;
+
+namespace Core {
+namespace Internal {
+
+SystemSettings::SystemSettings()
+    : m_page(0), m_dialog(0)
+{
+    setId(Constants::SETTINGS_ID_SYSTEM);
+    setDisplayName(tr("System"));
+    setCategory(Constants::SETTINGS_CATEGORY_CORE);
+    setDisplayCategory(QCoreApplication::translate("Core", Constants::SETTINGS_TR_CATEGORY_CORE));
+    setCategoryIcon(QLatin1String(Constants::SETTINGS_CATEGORY_CORE_ICON));
+}
+
+QWidget *SystemSettings::widget()
+{
+    if (!m_widget) {
+        m_page = new Ui::SystemSettings();
+        m_widget = new QWidget;
+        m_page->setupUi(m_widget);
+
+        m_page->reloadBehavior->setCurrentIndex(EditorManager::reloadSetting());
+        if (HostOsInfo::isAnyUnixHost()) {
+            const QStringList availableTerminals = ConsoleProcess::availableTerminalEmulators();
+            const QString currentTerminal = ConsoleProcess::terminalEmulator(ICore::settings(), false);
+            m_page->terminalComboBox->addItems(availableTerminals);
+            m_page->terminalComboBox->lineEdit()->setText(currentTerminal);
+            m_page->terminalComboBox->lineEdit()->setPlaceholderText(ConsoleProcess::defaultTerminalEmulator());
+        } else {
+            m_page->terminalLabel->hide();
+            m_page->terminalComboBox->hide();
+            m_page->resetTerminalButton->hide();
+        }
+
+        if (HostOsInfo::isAnyUnixHost() && !HostOsInfo::isMacHost()) {
+            m_page->externalFileBrowserEdit->setText(UnixUtils::fileBrowser(ICore::settings()));
+        } else {
+            m_page->externalFileBrowserLabel->hide();
+            m_page->externalFileBrowserEdit->hide();
+            m_page->resetFileBrowserButton->hide();
+            m_page->helpExternalFileBrowserButton->hide();
+        }
+
+        const QString patchToolTip = tr("Command used for reverting diff chunks.");
+        m_page->patchCommandLabel->setToolTip(patchToolTip);
+        m_page->patchChooser->setToolTip(patchToolTip);
+        m_page->patchChooser->setExpectedKind(PathChooser::ExistingCommand);
+        m_page->patchChooser->setHistoryCompleter(QLatin1String("General.PatchCommand.History"));
+        m_page->patchChooser->setPath(PatchTool::patchCommand());
+        m_page->autoSaveCheckBox->setChecked(EditorManagerPrivate::autoSaveEnabled());
+        m_page->autoSaveInterval->setValue(EditorManagerPrivate::autoSaveInterval());
+        m_page->warnBeforeOpeningBigFiles->setChecked(
+                    EditorManagerPrivate::warnBeforeOpeningBigFilesEnabled());
+        m_page->bigFilesLimitSpinBox->setValue(EditorManagerPrivate::bigFileSizeLimit());
+
+        if (HostOsInfo::isAnyUnixHost()) {
+            connect(m_page->resetTerminalButton, SIGNAL(clicked()), this, SLOT(resetTerminal()));
+            if (!HostOsInfo::isMacHost()) {
+                connect(m_page->resetFileBrowserButton, SIGNAL(clicked()), this, SLOT(resetFileBrowser()));
+                connect(m_page->helpExternalFileBrowserButton, SIGNAL(clicked()),
+                        this, SLOT(showHelpForFileBrowser()));
+            }
+        }
+
+        updatePath();
+
+        connect(VcsManager::instance(), SIGNAL(configurationChanged(const IVersionControl*)),
+                this, SLOT(updatePath()));
+    }
+    return m_widget;
+}
+
+void SystemSettings::apply()
+{
+    if (!m_page) // wasn't shown, can't be changed
+        return;
+    EditorManager::setReloadSetting(IDocument::ReloadSetting(m_page->reloadBehavior->currentIndex()));
+    if (HostOsInfo::isAnyUnixHost()) {
+        ConsoleProcess::setTerminalEmulator(ICore::settings(),
+                                            m_page->terminalComboBox->lineEdit()->text());
+        if (!HostOsInfo::isMacHost()) {
+            UnixUtils::setFileBrowser(ICore::settings(),
+                                      m_page->externalFileBrowserEdit->text());
+        }
+    }
+    PatchTool::setPatchCommand(m_page->patchChooser->path());
+    EditorManagerPrivate::setAutoSaveEnabled(m_page->autoSaveCheckBox->isChecked());
+    EditorManagerPrivate::setAutoSaveInterval(m_page->autoSaveInterval->value());
+    EditorManagerPrivate::setWarnBeforeOpeningBigFilesEnabled(
+                m_page->warnBeforeOpeningBigFiles->isChecked());
+    EditorManagerPrivate::setBigFileSizeLimit(m_page->bigFilesLimitSpinBox->value());
+}
+
+void SystemSettings::finish()
+{
+    delete m_widget;
+    delete m_page;
+    m_page = 0;
+}
+
+void SystemSettings::resetTerminal()
+{
+    if (HostOsInfo::isAnyUnixHost())
+        m_page->terminalComboBox->lineEdit()->clear();
+}
+
+void SystemSettings::resetFileBrowser()
+{
+    if (HostOsInfo::isAnyUnixHost() && !HostOsInfo::isMacHost())
+        m_page->externalFileBrowserEdit->setText(UnixUtils::defaultFileBrowser());
+}
+
+void SystemSettings::updatePath()
+{
+    Environment env = Environment::systemEnvironment();
+    QStringList toAdd = VcsManager::additionalToolsPath();
+    env.appendOrSetPath(toAdd.join(HostOsInfo::pathListSeparator()));
+    m_page->patchChooser->setEnvironment(env);
+}
+
+void SystemSettings::variableHelpDialogCreator(const QString &helpText)
+{
+    if (m_dialog) {
+        if (m_dialog->text() != helpText)
+            m_dialog->setText(helpText);
+
+        m_dialog->show();
+        ICore::raiseWindow(m_dialog);
+        return;
+    }
+    QMessageBox *mb = new QMessageBox(QMessageBox::Information,
+                                  tr("Variables"),
+                                  helpText,
+                                  QMessageBox::Close,
+                                  m_widget);
+    mb->setWindowModality(Qt::NonModal);
+    m_dialog = mb;
+    mb->show();
+}
+
+
+void SystemSettings::showHelpForFileBrowser()
+{
+    if (HostOsInfo::isAnyUnixHost() && !HostOsInfo::isMacHost())
+        variableHelpDialogCreator(UnixUtils::fileBrowserHelpText());
+}
+
+} // namespace Internal
+} // namespace Core