Collections
Transfer
Search and move items between two lists without changing the source model.
Example

Usage
Choose a project team
Search either list, select members, and move them together. Disabled members stay unavailable.
#include <FluentQt/Collections.h>
using namespace fluent::collections;
#pragma once
#include <FluentQt/FluentQt.h>
#include <QItemSelectionModel>
#include <QStandardItemModel>
#include <QVBoxLayout>
namespace fluent::gallery {
class TransferSample final : public QWidget {
public:
explicit TransferSample(QWidget* parent = nullptr) : QWidget(parent)
{
setObjectName(QStringLiteral("transferSample"));
setMaximumWidth(740);
auto* layout = new QVBoxLayout(this);
layout->setContentsMargins(0, 0, 0, 0);
layout->setSpacing(::Spacing::Standard);
auto* model = new QStandardItemModel(this);
const QList<QStringList> members{{"lin", "Lin Xiao", "Design"}, {"lin-yue", "Lin Yue", "Engineering"},
{"xu", "Xu An", "QA"}, {"song", "Song Ke", "Unavailable"}, {"zhou", "Zhou Ning", "Engineering"},
{"shen", "Shen Yi", "Product"}};
for (const auto& member : members) {
auto* item = new QStandardItem(member.at(1));
item->setData(member.at(0), Qt::UserRole);
item->setData(member.at(2), Qt::UserRole + 1);
item->setEnabled(member.at(0) != QStringLiteral("song"));
model->appendRow(item);
}
auto* transfer = new collections::Transfer(this);
transfer->setObjectName(QStringLiteral("projectMemberTransfer"));
transfer->setAccessibleName(QStringLiteral("Project members"));
transfer->setSourceHeader(QStringLiteral("Available members"));
transfer->setTargetHeader(QStringLiteral("Project members"));
transfer->setSearchPlaceholderText(QStringLiteral("Search members"));
transfer->setDescriptionRole(Qt::UserRole + 1);
transfer->setModel(model);
transfer->setSelectedKeys({QStringLiteral("zhou"), QStringLiteral("shen")});
layout->addWidget(transfer);
auto* status = new textfields::Label(this);
status->setObjectName(QStringLiteral("transferMemberCount"));
status->setFluentTypography(Typography::FontRole::Caption);
status->setTextColorRole(textfields::Label::TextColorRole::Secondary);
status->setWordWrap(true);
const auto updateStatus = [transfer, status]() {
status->setText(
QStringLiteral("%1 project members · Source data stays unchanged").arg(transfer->selectedCount()));
};
connect(transfer, &collections::Transfer::countsChanged, status, updateStatus);
updateStatus();
layout->addWidget(status);
}
};
} // namespace fluent::galleryimport fluentqt
from PySide6.QtCore import Qt
transfer = fluentqt.Transfer(self)
transfer.setModel(member_model)
transfer.setDescriptionRole(Qt.UserRole + 1)
transfer.setSelectedKeys(["zhou", "shen"])
transfer.selectedKeysChanged.connect(save_project_members)
# Full example includes the caller-owned model and named panels.API
DeclarationNo matching API members.
fluent::collections::Transfer
Inherits QWidget · FluentElement · QMLPlus
Searchable dual-list selection backed by a caller-owned flat model.
Constructors
Properties
QAbstractItemModel* model- Read
model()WritesetModel()NotifymodelChanged() int keyRole- Read
keyRole()WritesetKeyRole()NotifykeyRoleChanged() int descriptionRole- Read
descriptionRole()WritesetDescriptionRole()NotifydescriptionRoleChanged() QStringList selectedKeys- Read
selectedKeys()WritesetSelectedKeys()NotifyselectedKeysChanged() int selectedCount- Read
selectedCount()NotifycountsChanged() int availableCount- Read
availableCount()NotifycountsChanged() QString sourceHeader- Read
sourceHeader()WritesetSourceHeader()NotifysourceHeaderChanged() QString targetHeader- Read
targetHeader()WritesetTargetHeader()NotifytargetHeaderChanged() QString sourceFilter- Read
sourceFilter()WritesetSourceFilter()NotifysourceFilterChanged() QString targetFilter- Read
targetFilter()WritesetTargetFilter()NotifytargetFilterChanged() QString searchPlaceholderText- Read
searchPlaceholderText()WritesetSearchPlaceholderText()NotifysearchPlaceholderTextChanged()
Methods
void setModel(QAbstractItemModel* model)Borrows the model; destruction clears the surface without taking ownership.
void setSelectedKeys(const QStringList& keys)Keeps unique known keys in the supplied order; disabled keys may be assigned programmatically.
ListView* sourceView() constOwned views for delegates, keyboard selection, and inspection; keep their internal models installed.
Signals
Destructors
Subclass interfaces
Methods
Inherited from fluent::FluentElement
Methods
static void setTheme(Theme theme)Updates the global theme and notifies active FluentElement instances.
static void setThemeDeferred(Theme theme)Schedules a visible-first batched theme refresh without blocking the current interaction.
static Theme currentTheme()Returns the currently active global theme.
static bool themeUsesDarkAppearance(Theme theme)Returns whether a theme uses dark-backed chrome and material tokens.
static void refreshTheme()Re-broadcasts the current theme to repaint after a design-token change.
static int themeGeneration()Monotonic counter bumped on every theme change, for staleness checks.
Theme effectiveTheme() constResolves the theme used by this element, honoring an inherited QWidget override.
bool effectiveThemeUsesDarkAppearance() constReturns whether this element's effective theme uses dark-backed chrome.
bool setThemeOverrides(const QJsonObject& overrides)Component-facing token accessors.
QJsonObject themeOverrides() constReturns this element's authored overrides.
void clearThemeOverrides()Restores all token fields to global theme defaults.
const Colors& themeColorsRef() constNon-copying access to the active color set (for hot paint paths).
Material::AcrylicToken themeAcrylic() constMaterial, elevation, and adaptive layout tokens.
QColor themeBackdrop(bool active) constWindow-chrome backdrop color for the given activation state.
virtual void onThemeUpdated()Called after the global theme changes.
Enumerations
enum ThemeGlobal visual theme used when resolving design tokens.
Light = 0Dark = 1HighContrast = 2
Types and aliases
struct ColorsDesign token snapshots returned to components.
Inherited from fluent::QMLPlus
Methods
AnchorLayout::Anchors* anchors()Returns mutable anchors for the QWidget host.
void setState(const QString& name)Applies a named state, or clears state when name is empty.
void addState(const QMLState& state)Registers or replaces a named state definition.
void evaluateStates()Reevaluates conditions; the first registered true condition wins.
QMLPlusRuntime* runtime()Returns the lazy host-owned state observation object.
void setAnchors(const AnchorLayout::Anchors& anchors)Replaces all host anchors and invalidates the parent layout.
void resetAnchors()Clears all host anchors and invalidates the parent layout.
void bind(const char* targetProp, QObject* source, const char* sourceProp, PropertyBinder::Direction dir = PropertyBinder::OneWay)Binds a source property to a property on the QWidget host.
BindingHandle bindManaged(const char* targetProp, QObject* source, const char* sourceProp, PropertyBinder::Direction direction = PropertyBinder::OneWay, BindingOptions options = {})Installs a managed direct binding on this QWidget host.
BindingHandle bindComputed(const char* targetProp, const QVector<BindingDependency>& dependencies, std::function<QVariant()> evaluate, BindingOptions options = {})Installs an explicit-dependency C++ expression on this QWidget host.
void addTransition(const StateTransition& transition)Registers a state transition in precedence order.
void setBehavior(const char* propertyName, const PropertyAnimation& animation)Sets the default animation for this host's managed property writes.
void clearBehavior(const char* propertyName)Removes the default animation for future managed writes.
bool writeProperty(const char* propertyName, const QVariant& value)Writes a host property through Behavior without removing its binding.
All inherited Qt members:QWidget