296 lines
11 KiB
C++
296 lines
11 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
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#ifndef QFILESYSTEMMODEL_P_H
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#define QFILESYSTEMMODEL_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#include <QtGui/private/qtguiglobal_p.h>
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#include "qfilesystemmodel.h"
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#include <private/qabstractitemmodel_p.h>
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#include <qabstractitemmodel.h>
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#include "qfileinfogatherer_p.h"
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#include <qpair.h>
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#include <qdir.h>
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#include <qicon.h>
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#include <qfileinfo.h>
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#include <qtimer.h>
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#include <qhash.h>
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#include <vector>
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QT_REQUIRE_CONFIG(filesystemmodel);
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QT_BEGIN_NAMESPACE
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class ExtendedInformation;
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class QFileSystemModelPrivate;
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class QFileIconProvider;
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#if defined(Q_OS_WIN)
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class QFileSystemModelNodePathKey : public QString
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{
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public:
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QFileSystemModelNodePathKey() {}
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QFileSystemModelNodePathKey(const QString &other) : QString(other) {}
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QFileSystemModelNodePathKey(const QFileSystemModelNodePathKey &other) : QString(other) {}
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bool operator==(const QFileSystemModelNodePathKey &other) const { return !compare(other, Qt::CaseInsensitive); }
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};
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Q_DECLARE_TYPEINFO(QFileSystemModelNodePathKey, Q_RELOCATABLE_TYPE);
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inline size_t qHash(const QFileSystemModelNodePathKey &key, size_t seed = 0)
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{
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return qHash(key.toCaseFolded(), seed);
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}
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#else // Q_OS_WIN
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typedef QString QFileSystemModelNodePathKey;
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#endif
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class Q_GUI_EXPORT QFileSystemModelPrivate : public QAbstractItemModelPrivate
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{
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Q_DECLARE_PUBLIC(QFileSystemModel)
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public:
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enum { NumColumns = 4 };
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class QFileSystemNode
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{
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public:
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Q_DISABLE_COPY_MOVE(QFileSystemNode)
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explicit QFileSystemNode(const QString &filename = QString(), QFileSystemNode *p = nullptr)
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: fileName(filename), parent(p) {}
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~QFileSystemNode() {
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qDeleteAll(children);
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delete info;
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}
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QString fileName;
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#if defined(Q_OS_WIN)
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QString volumeName;
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#endif
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inline qint64 size() const { if (info && !info->isDir()) return info->size(); return 0; }
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inline QString type() const { if (info) return info->displayType; return QLatin1StringView(""); }
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inline QDateTime lastModified() const { if (info) return info->lastModified(); return QDateTime(); }
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inline QFile::Permissions permissions() const { if (info) return info->permissions(); return { }; }
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inline bool isReadable() const { return ((permissions() & QFile::ReadUser) != 0); }
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inline bool isWritable() const { return ((permissions() & QFile::WriteUser) != 0); }
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inline bool isExecutable() const { return ((permissions() & QFile::ExeUser) != 0); }
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inline bool isDir() const {
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if (info)
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return info->isDir();
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if (children.size() > 0)
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return true;
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return false;
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}
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inline QFileInfo fileInfo() const { if (info) return info->fileInfo(); return QFileInfo(); }
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inline bool isFile() const { if (info) return info->isFile(); return true; }
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inline bool isSystem() const { if (info) return info->isSystem(); return true; }
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inline bool isHidden() const { if (info) return info->isHidden(); return false; }
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inline bool isSymLink(bool ignoreNtfsSymLinks = false) const { return info && info->isSymLink(ignoreNtfsSymLinks); }
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inline bool caseSensitive() const { if (info) return info->isCaseSensitive(); return false; }
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inline QIcon icon() const { if (info) return info->icon; return QIcon(); }
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inline bool operator <(const QFileSystemNode &node) const {
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if (caseSensitive() || node.caseSensitive())
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return fileName < node.fileName;
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return QString::compare(fileName, node.fileName, Qt::CaseInsensitive) < 0;
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}
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inline bool operator >(const QString &name) const {
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if (caseSensitive())
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return fileName > name;
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return QString::compare(fileName, name, Qt::CaseInsensitive) > 0;
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}
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inline bool operator <(const QString &name) const {
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if (caseSensitive())
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return fileName < name;
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return QString::compare(fileName, name, Qt::CaseInsensitive) < 0;
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}
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inline bool operator !=(const QExtendedInformation &fileInfo) const {
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return !operator==(fileInfo);
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}
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bool operator ==(const QString &name) const {
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if (caseSensitive())
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return fileName == name;
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return QString::compare(fileName, name, Qt::CaseInsensitive) == 0;
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}
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bool operator ==(const QExtendedInformation &fileInfo) const {
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return info && (*info == fileInfo);
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}
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inline bool hasInformation() const { return info != nullptr; }
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void populate(const QExtendedInformation &fileInfo) {
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if (!info)
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info = new QExtendedInformation(fileInfo.fileInfo());
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(*info) = fileInfo;
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}
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// children shouldn't normally be accessed directly, use node()
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inline int visibleLocation(const QString &childName) {
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return visibleChildren.indexOf(childName);
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}
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void updateIcon(QAbstractFileIconProvider *iconProvider, const QString &path) {
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if (info)
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info->icon = iconProvider->icon(QFileInfo(path));
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for (QFileSystemNode *child : std::as_const(children)) {
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//On windows the root (My computer) has no path so we don't want to add a / for nothing (e.g. /C:/)
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if (!path.isEmpty()) {
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if (path.endsWith(u'/'))
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child->updateIcon(iconProvider, path + child->fileName);
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else
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child->updateIcon(iconProvider, path + u'/' + child->fileName);
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} else
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child->updateIcon(iconProvider, child->fileName);
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}
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}
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void retranslateStrings(QAbstractFileIconProvider *iconProvider, const QString &path) {
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if (info)
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info->displayType = iconProvider->type(QFileInfo(path));
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for (QFileSystemNode *child : std::as_const(children)) {
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//On windows the root (My computer) has no path so we don't want to add a / for nothing (e.g. /C:/)
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if (!path.isEmpty()) {
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if (path.endsWith(u'/'))
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child->retranslateStrings(iconProvider, path + child->fileName);
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else
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child->retranslateStrings(iconProvider, path + u'/' + child->fileName);
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} else
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child->retranslateStrings(iconProvider, child->fileName);
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}
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}
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QHash<QFileSystemModelNodePathKey, QFileSystemNode *> children;
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QList<QString> visibleChildren;
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QExtendedInformation *info = nullptr;
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QFileSystemNode *parent;
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int dirtyChildrenIndex = -1;
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bool populatedChildren = false;
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bool isVisible = false;
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};
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QFileSystemModelPrivate();
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~QFileSystemModelPrivate();
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void init();
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/*
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\internal
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Return true if index which is owned by node is hidden by the filter.
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*/
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inline bool isHiddenByFilter(QFileSystemNode *indexNode, const QModelIndex &index) const
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{
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return (indexNode != &root && !index.isValid());
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}
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QFileSystemNode *node(const QModelIndex &index) const;
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QFileSystemNode *node(const QString &path, bool fetch = true) const;
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inline QModelIndex index(const QString &path, int column = 0) { return index(node(path), column); }
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QModelIndex index(const QFileSystemNode *node, int column = 0) const;
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bool filtersAcceptsNode(const QFileSystemNode *node) const;
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bool passNameFilters(const QFileSystemNode *node) const;
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void removeNode(QFileSystemNode *parentNode, const QString &name);
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QFileSystemNode* addNode(QFileSystemNode *parentNode, const QString &fileName, const QFileInfo &info);
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void addVisibleFiles(QFileSystemNode *parentNode, const QStringList &newFiles);
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void removeVisibleFile(QFileSystemNode *parentNode, int visibleLocation);
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void sortChildren(int column, const QModelIndex &parent);
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inline int translateVisibleLocation(QFileSystemNode *parent, int row) const {
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if (sortOrder != Qt::AscendingOrder) {
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if (parent->dirtyChildrenIndex == -1)
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return parent->visibleChildren.size() - row - 1;
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if (row < parent->dirtyChildrenIndex)
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return parent->dirtyChildrenIndex - row - 1;
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}
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return row;
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}
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inline static QString myComputer() {
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// ### TODO We should query the system to find out what the string should be
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// XP == "My Computer",
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// Vista == "Computer",
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// OS X == "Computer" (sometime user generated) "Benjamin's PowerBook G4"
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#ifdef Q_OS_WIN
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return QFileSystemModel::tr("My Computer");
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#else
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return QFileSystemModel::tr("Computer");
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#endif
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}
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inline void delayedSort() {
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if (!delayedSortTimer.isActive())
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delayedSortTimer.start(0);
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}
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QIcon icon(const QModelIndex &index) const;
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QString name(const QModelIndex &index) const;
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QString displayName(const QModelIndex &index) const;
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QString filePath(const QModelIndex &index) const;
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QString size(const QModelIndex &index) const;
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static QString size(qint64 bytes);
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QString type(const QModelIndex &index) const;
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QString time(const QModelIndex &index) const;
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void _q_directoryChanged(const QString &directory, const QStringList &list);
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void _q_performDelayedSort();
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void _q_fileSystemChanged(const QString &path, const QList<QPair<QString, QFileInfo>> &);
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void _q_resolvedName(const QString &fileName, const QString &resolvedName);
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QDir rootDir;
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#if QT_CONFIG(filesystemwatcher)
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# ifdef Q_OS_WIN
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QStringList unwatchPathsAt(const QModelIndex &);
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void watchPaths(const QStringList &paths) { fileInfoGatherer.watchPaths(paths); }
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# endif // Q_OS_WIN
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QFileInfoGatherer fileInfoGatherer;
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#endif // filesystemwatcher
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QTimer delayedSortTimer;
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QHash<const QFileSystemNode*, bool> bypassFilters;
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#if QT_CONFIG(regularexpression)
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QStringList nameFilters;
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std::vector<QRegularExpression> nameFiltersRegexps;
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void rebuildNameFilterRegexps();
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#endif
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QHash<QString, QString> resolvedSymLinks;
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QFileSystemNode root;
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struct Fetching {
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QString dir;
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QString file;
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const QFileSystemNode *node;
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};
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QList<Fetching> toFetch;
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QBasicTimer fetchingTimer;
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QDir::Filters filters = QDir::AllEntries | QDir::NoDotAndDotDot | QDir::AllDirs;
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int sortColumn = 0;
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Qt::SortOrder sortOrder = Qt::AscendingOrder;
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bool forceSort = true;
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bool readOnly = true;
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bool setRootPath = false;
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bool nameFilterDisables = true; // false on windows, true on mac and unix
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// This flag is an optimization for QFileDialog. It enables a sort which is
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// not recursive, meaning we sort only what we see.
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bool disableRecursiveSort = false;
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};
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Q_DECLARE_TYPEINFO(QFileSystemModelPrivate::Fetching, Q_RELOCATABLE_TYPE);
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QT_END_NAMESPACE
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#endif
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