Initial import

src/libs/utils/pathchooser.cpp

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+/***************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact:  Qt Software Information (qt-info@nokia.com)
+**
+** 
+** Non-Open Source Usage  
+** 
+** Licensees may use this file in accordance with the Qt Beta Version
+** License Agreement, Agreement version 2.2 provided with the Software or,
+** alternatively, in accordance with the terms contained in a written
+** agreement between you and Nokia.  
+** 
+** GNU General Public License Usage 
+** 
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the packaging
+** of this file.  Please review the following information to ensure GNU
+** General Public Licensing requirements will be met:
+**
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt GPL Exception version
+** 1.2, included in the file GPL_EXCEPTION.txt in this package.  
+** 
+***************************************************************************/
+#include "pathchooser.h"
+#include "basevalidatinglineedit.h"
+
+#include <QtGui/QLineEdit>
+#include <QtGui/QHBoxLayout>
+#include <QtGui/QToolButton>
+#include <QtGui/QFileDialog>
+#include <QtGui/QDesktopServices>
+
+#include <QtCore/QFileInfo>
+#include <QtCore/QDir>
+#include <QtCore/QSettings>
+#include <QtCore/QDebug>
+
+namespace Core {
+namespace Utils {
+
+// ------------------ PathValidatingLineEdit
+class PathValidatingLineEdit : public BaseValidatingLineEdit {
+public:
+    explicit PathValidatingLineEdit(QWidget *parent = 0);
+
+protected:
+    virtual bool validate(const QString &value, QString *errorMessage) const;
+};
+
+PathValidatingLineEdit::PathValidatingLineEdit(QWidget *parent) :
+    BaseValidatingLineEdit(parent)
+{
+}
+
+bool PathValidatingLineEdit::validate(const QString &value, QString *errorMessage) const
+{
+    return PathChooser::validatePath(value, errorMessage);
+}
+
+// ------------------ PathChooserPrivate
+struct PathChooserPrivate {
+    PathChooserPrivate();
+
+    PathValidatingLineEdit *m_lineEdit;
+};
+
+PathChooserPrivate::PathChooserPrivate() :
+    m_lineEdit(new PathValidatingLineEdit)
+{
+}
+
+PathChooser::PathChooser(QWidget *parent) :
+    QWidget(parent),
+    m_d(new PathChooserPrivate)
+{
+    QHBoxLayout *hLayout = new QHBoxLayout;
+    hLayout->setContentsMargins(0, 0, 0, 0);
+
+    connect(m_d->m_lineEdit, SIGNAL(validReturnPressed()), this, SIGNAL(returnPressed()));
+    connect(m_d->m_lineEdit, SIGNAL(textChanged(QString)), this, SIGNAL(changed()));
+    connect(m_d->m_lineEdit, SIGNAL(validChanged()), this, SIGNAL(validChanged()));
+
+    m_d->m_lineEdit->setMinimumWidth(300);
+    hLayout->addWidget(m_d->m_lineEdit);
+
+    QToolButton *browseButton = new QToolButton;
+    browseButton->setText(tr("..."));
+    connect(browseButton, SIGNAL(clicked()), this, SLOT(slotBrowse()));
+
+    hLayout->addWidget(browseButton);
+    setLayout(hLayout);
+    setFocusProxy(m_d->m_lineEdit);
+}
+
+PathChooser::~PathChooser()
+{
+    delete m_d;
+}
+
+QString PathChooser::path() const
+{
+    return m_d->m_lineEdit->text();
+}
+
+void PathChooser::setPath(const QString &path)
+{
+    const QString defaultPath = path.isEmpty() ? homePath() : path;
+    m_d->m_lineEdit->setText(QDir::toNativeSeparators(defaultPath));
+}
+
+void PathChooser::slotBrowse()
+{
+    QString predefined = path();
+    if (!predefined.isEmpty() && !QFileInfo(predefined).isDir())
+        predefined.clear();
+    // Prompt for a directory, delete trailing slashes unless it is "/", only
+    QString newPath = QFileDialog::getExistingDirectory(this, tr("Choose a path"), predefined);
+    if (!newPath .isEmpty()) {
+        if (newPath .size() > 1 && newPath .endsWith(QDir::separator()))
+            newPath .truncate(newPath .size() - 1);
+        setPath(newPath);
+    }
+}
+
+bool PathChooser::isValid() const
+{
+    return m_d->m_lineEdit->isValid();
+}
+
+QString PathChooser::errorMessage() const
+{
+    return  m_d->m_lineEdit->errorMessage();
+}
+
+bool PathChooser::validatePath(const QString &path, QString *errorMessage)
+{
+    if (path.isEmpty()) {
+        if (errorMessage)
+            *errorMessage = tr("The path must not be empty.");
+        return false;
+    }
+    // Must be a directory?
+    const QFileInfo fi(path);
+    if (fi.isDir())
+        return true; // Happy!
+
+    if (!fi.exists()) {
+        if (errorMessage)
+            *errorMessage = tr("The path '%1' does not exist.").arg(path);
+        return false;
+    }
+    // Must be something weird
+    if (errorMessage)
+        *errorMessage = tr("The path '%1' is not a directory.").arg(path);
+    return false;
+}
+
+QString PathChooser::label()
+{
+    return tr("Path:");
+}
+
+QString PathChooser::homePath()
+{
+#ifdef Q_OS_WIN
+    // Return 'users/<name>/Documents' on Windows, since Windows explorer
+    // does not let people actually display the contents of their home
+    // directory. Alternatively, create a QtCreator-specific directory?
+    return QDesktopServices::storageLocation(QDesktopServices::DocumentsLocation);
+#else
+    return QDir::homePath();
+#endif
+}
+
+}
+}