Add widget for editing filesystem paths

src/gui/fspathedit_p.h

@@ -0,0 +1,101 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2016 Eugene Shalygin
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ */
+
+#ifndef QBT_GUI_FSPATHEDIT_P_H
+#define QBT_GUI_FSPATHEDIT_P_H
+
+#include <QAction>
+#include <QComboBox>
+#include <QCompleter>
+#include <QContextMenuEvent>
+#include <QDir>
+#include <QFileIconProvider>
+#include <QFileSystemModel>
+#include <QKeyEvent>
+#include <QLineEdit>
+#include <QMenu>
+
+namespace Private
+{
+    class FileEditorWithCompletion
+    {
+    public:
+        virtual ~FileEditorWithCompletion() = default;
+        virtual void completeDirectoriesOnly(bool completeDirsOnly) = 0;
+        virtual void setFilenameFilters(const QStringList &filters) = 0;
+        virtual void setBrowseAction(QAction *action) = 0;
+        virtual QWidget *widget() = 0;
+    };
+
+    class FileLineEdit: public QLineEdit, public FileEditorWithCompletion
+    {
+        Q_OBJECT
+        Q_DISABLE_COPY(FileLineEdit)
+
+    public:
+        FileLineEdit(QWidget *parent = nullptr);
+        ~FileLineEdit();
+
+        void completeDirectoriesOnly(bool completeDirsOnly) override;
+        void setFilenameFilters(const QStringList &filters) override;
+        void setBrowseAction(QAction *action) override;
+        QWidget *widget() override;
+
+    protected:
+        void keyPressEvent(QKeyEvent *event) override;
+        void contextMenuEvent(QContextMenuEvent *event) override;
+
+    private slots:
+        void showCompletionPopup();
+
+    private:
+        QFileSystemModel *m_completerModel;
+        QCompleter *m_completer;
+        QAction *m_browseAction;
+        QFileIconProvider m_iconProvider;
+    };
+
+
+    class FileComboEdit: public QComboBox, public FileEditorWithCompletion
+    {
+        Q_OBJECT
+
+    public:
+        FileComboEdit(QWidget *parent = nullptr);
+
+        void completeDirectoriesOnly(bool completeDirsOnly) override;
+        void setFilenameFilters(const QStringList &filters) override;
+        void setBrowseAction(QAction *action) override;
+        QWidget *widget() override;
+
+    protected:
+        QString text() const;
+    };
+}
+
+#endif // QBT_GUI_FSPATHEDIT_P_H