Add a bread crumb widget to file system view

Which allows easy navigation to any parent of the current selection.

Task-number: QTCREATORBUG-19203
Change-Id: I97179a4800afd92a21bd0fa466fbfda4ac1a5846
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

1 files changed, 75 insertions, 0 deletions

diff --git a/src/libs/utils/filecrumblabel.cpp b/src/libs/utils/filecrumblabel.cpp
new file mode 100644
index 0000000000..e91a528685
--- /dev/null
+++ b/src/libs/utils/filecrumblabel.cpp
@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 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.
+**
+****************************************************************************/
+
+#include "filecrumblabel.h"
+
+#include <utils/hostosinfo.h>
+
+#include <QDir>
+#include <QUrl>
+
+namespace Utils {
+
+FileCrumbLabel::FileCrumbLabel(QWidget *parent)
+    : QLabel(parent)
+{
+    setTextFormat(Qt::RichText);
+    setWordWrap(true);
+    connect(this, &QLabel::linkActivated, this, [this](const QString &url) {
+        emit pathClicked(FileName::fromString(QUrl(url).toLocalFile()));
+    });
+    setPath(FileName());
+}
+
+static QString linkForPath(const FileName &path, const QString &display)
+{
+    return "<a href=\""
+            + QUrl::fromLocalFile(path.toString()).toString(QUrl::FullyEncoded) + "\">"
+            + display + "</a>";
+}
+
+void FileCrumbLabel::setPath(const FileName &path)
+{
+    QStringList links;
+    FileName current = path;
+    while (!current.isEmpty()) {
+        const QString fileName = current.fileName();
+        if (!fileName.isEmpty()) {
+            links.prepend(linkForPath(current, fileName));
+        } else if (HostOsInfo::isWindowsHost() && QDir(current.toString()).isRoot()) {
+            // Only on Windows add the drive letter, without the '/' at the end
+            QString display = current.toString();
+            if (display.endsWith('/'))
+                display.chop(1);
+            links.prepend(linkForPath(current, display));
+        }
+        current = current.parentDir();
+    }
+    const auto pathSeparator = QLatin1String(HostOsInfo::isWindowsHost() ? " \\ " : " / ");
+    const QString prefix = HostOsInfo::isWindowsHost() ? QString("&nbsp;\\ ") : QString("&nbsp;/ ");
+    setText(prefix + links.join(pathSeparator));
+}
+
+} // Utils