### Install QuickFlux Manually (without qpm)

Source: https://github.com/benlau/quickflux/blob/master/README.md

Instructions for installing QuickFlux by manually including the project files in your source tree. It involves adding a .pri file to your project and importing the library in QML.

```makefile
include(quickflux/quickflux.pri) # Modify path as needed

import QuickFlux 1.0
```

--------------------------------

### Install QuickFlux with qpm Package Manager

Source: https://github.com/benlau/quickflux/blob/master/README.md

This snippet shows how to install the QuickFlux library using the qpm package manager, including adding the include path to your project file and importing the library in QML.

```bash
$qpm install com.github.benlau.quickflux

include(vendor/vendor.pri)

import QuickFlux 1.0
```

--------------------------------

### CMake Project Setup and Dependencies

Source: https://github.com/benlau/quickflux/blob/master/examples/todo/CMakeLists.txt

Configures the CMake build for the 'todo' project, specifying minimum version, project name, and enabling verbose build output. It finds and requires necessary Qt5 modules (Qml, Gui, Core, Quick).

```cmake
cmake_minimum_required(VERSION 3.1.0)

project(todo)

set(CMAKE_VERBOSE_MAKEFILE ON)

set(CMAKE_INCLUDE_CURRENT_DIR ON)

set(CMAKE_AUTOMOC ON)

set(CMAKE_AUTOUIC ON)

set(CMAKE_AUTORCC ON)

find_package(Qt5Qml CONFIG REQUIRED)
find_package(Qt5Gui CONFIG REQUIRED)
find_package(Qt5Core CONFIG REQUIRED)
find_package(Qt5Quick CONFIG REQUIRED)
```

--------------------------------

### Structure Main Application Window in QML

Source: https://github.com/benlau/quickflux/blob/master/examples/todo/README.md

The main QML file sets up the primary window for the application, arranging components like Header, TodoList, and Footer within a `ColumnLayout`. This demonstrates the principle of breaking down the UI into smaller, manageable pieces and achieving a loosely coupled design by avoiding direct signal propagation between these components.

```qml
Window {
    width: 480
    height: 640
    visible: true

    ColumnLayout {
        anchors.fill: parent
        anchors.leftMargin: 16
        anchors.rightMargin: 16

        Header {
            Layout.fillWidth: true
            Layout.fillHeight: false
        }

        TodoList {
            Layout.fillWidth: true
            Layout.fillHeight: true
        }

        Footer {
            Layout.fillWidth: true
            Layout.fillHeight: false
        }
    }
}
```

--------------------------------

### Create Actions with AppActions in QML

Source: https://github.com/benlau/quickflux/blob/master/examples/todo/README.md

AppActions acts as an action creator, a helper component to create and dispatch actions through the central dispatcher. It depends only on AppDispatcher and has no knowledge of the data model or its consumers. Actions are dispatched via the `dispatch()` function.

```qml
// Example usage within a QML file (assuming AppActions is imported and available)
// AppActions.addTask("Buy groceries");
// AppActions.setTaskDone(taskId, true);
// AppActions.setShowCompletedTasks(false);
```

--------------------------------

### Source Files and External Project Integration

Source: https://github.com/benlau/quickflux/blob/master/examples/todo/CMakeLists.txt

Defines the source files for the 'todo' executable and integrates 'QuickFlux' as an external project using `ExternalProject_Add`. This allows the project to fetch, build, and install QuickFlux dependencies.

```cmake
set(todo_SRCS
  main.cpp
  qml.qrc
  )

include(ExternalProject)

ExternalProject_Add(QuickFlux
  PREFIX "${PROJECT_BINARY_DIR}/QuickFlux-build"
  SOURCE_DIR "${PROJECT_SOURCE_DIR}/../.."
  CMAKE_ARGS "-DCMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH}"
             "-DCMAKE_INSTALL_PREFIX=${PROJECT_BINARY_DIR}/QuickFlux"
             "-DCMAKE_INSTALL_LIBDIR=${PROJECT_BINARY_DIR}/QuickFlux/lib"
             "-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}"
  )
```

--------------------------------

### Define Action Types in QML

Source: https://github.com/benlau/quickflux/blob/master/examples/todo/README.md

Defines a constant table (singleton component) for storing all available action types used in the application. This helps in centralizing action names and avoiding naming conflicts. It relies on Quickflux's KeyTable for key-value storage.

```qml
pragma Singleton
import QtQuick 2.0
import QuickFlux 1.0

KeyTable {
    // KeyTable is an object with properties equal to its key name

    property string addTask;

    property string setTaskDone;

    property string setShowCompletedTasks;

}
```

--------------------------------

### Create Application RootStore Singleton in QML

Source: https://context7.com/benlau/quickflux/llms.txt

Implements a singleton RootStore that binds to AppDispatcher and aggregates child stores. Provides direct data binding examples for ListView and UI controls accessing MainStore. Serves as single source of truth for application state with automatic action propagation to child stores.

```qml
// stores/RootStore.qml
import QtQuick 2.0
import QuickFlux 1.1

Store {
    id: rootStore

    // Bind to AppDispatcher to receive all actions
    bindSource: AppDispatcher

    // Child stores automatically receive dispatched actions
    property alias todo: todoStore
    TodoStore { id: todoStore }

    property alias userPrefs: userPrefsStore
    UserPrefsStore { id: userPrefsStore }

    property alias ui: uiStore
    UIStore { id: uiStore }
}

// stores/MainStore.qml (singleton wrapper)
pragma Singleton
import QtQuick 2.0
import QuickFlux 1.1

RootStore {
    bindSource: AppDispatcher
}

// Usage in views - direct data binding
import "../stores"

ListView {
    model: MainStore.todo.model

    delegate: ItemDelegate {
        text: model.title
        checkState: model.done ? Qt.Checked : Qt.Unchecked

        onClicked: {
            AppActions.setTaskDone(model.uid, !model.done);
        }
    }
}

Text {
    text: "Total tasks: " + MainStore.todo.model.count
}

CheckBox {
    checked: MainStore.userPrefs.showCompleted
    text: "Show completed tasks"
    onCheckedChanged: {
        AppActions.setShowCompleted(checked);
    }
}
```

--------------------------------

### Manage State with UserPrefsStore in QML

Source: https://github.com/benlau/quickflux/blob/master/examples/todo/README.md

UserPrefsStore is a QML component that extends Quickflux's `Store` to manage application data and state. It defines properties like `showCompletedTasks` and uses a `Filter` to react to specific action types (`ActionTypes.setShowCompletedTasks`) dispatched by the central dispatcher, updating its state accordingly.

```qml
import QtQuick 2.0
import QuickFlux 1.1
import "../actions"

Store {

    property bool showCompletedTasks: false

    Filter {
        // Views do not write to showCompeletedTasks directly.
        // It asks AppActions.setShowCompletedTasks() to do so.
        type: ActionTypes.setShowCompletedTasks
        onDispatched: {
            showCompletedTasks = message.value;
        }

    }

}
```

--------------------------------

### Dispatch Actions from UI Events in QML

Source: https://github.com/benlau/quickflux/blob/master/examples/todo/README.md

This QML snippet shows how to handle UI events, such as a checkbox changing its state, by dispatching actions through `AppActions`. Instead of directly manipulating state or querying other components, the UI 'tells' the system what action to perform (e.g., `setTaskDone`), adhering to the 'Tell, Don't Ask' design principle for better traceability and testability.

```qml
// Example within a QML component like Header.qml or TodoItem.qml
// Assuming 'uid' and 'checked' are available properties or variables
onCheckedChanged: {
    AppActions.setTaskDone(uid,checked);
}
```

--------------------------------

### Hydrate Store State

Source: https://github.com/benlau/quickflux/wiki/Roadmap

Example of using Hydrate to serialize and deserialize store states. This functionality enables taking snapshots of store data and restoring them, useful for UI state management and testing different application states.

```JavaScript
var snapshot = Hydrate.dehydrate(MainStore); // Convert the data field of MainStore into a JSON object
...
Hydrate.rehydrate(MainStore, snapshot1); // 
...
Hydrate.rehydrate(MainStore, snapshot2);
```

--------------------------------

### QML Middleware for Navigation and Logging

Source: https://context7.com/benlau/quickflux/llms.txt

Defines QML middleware components for intercepting actions. NavigationMiddleware handles navigation actions by interacting with a StackView, while LoggerMiddleware logs all dispatched actions. These examples demonstrate how to filter and process actions before they are passed to stores or the next middleware in the chain.

```qml
// middlewares/NavigationMiddleware.qml
import QtQuick 2.0
import QuickFlux 1.1

Middleware {
    filterFunctionEnabled: true
    property var stack  // Set from main.qml

    function dispatch(type, message) {
        // Intercept navigation actions
        if (type === ActionTypes.navigateTo) {
            stack.push(message.item, message.properties);
            return;  // Stop propagation
        }

        if (type === ActionTypes.navigateBack) {
            stack.pop();
            return;
        }

        // Pass through to next middleware/stores
        next(type, message);
    }
}

```

```qml
// middlewares/LoggerMiddleware.qml
Middleware {
    filterFunctionEnabled: true

    function dispatch(type, message) {
        console.log("[Action]", type, JSON.stringify(message));
        next(type, message);  // Always pass through for logging
    }
}

```

```qml
// main.qml - Apply middleware to ActionCreator
import QtQuick 2.0
import QuickFlux 1.1
import "actions"
import "middlewares"

ApplicationWindow {
    StackView { id: stackView }

    MiddlewareList {
        applyTarget: AppActions

        LoggerMiddleware { }

        NavigationMiddleware {
            stack: stackView
        }

        DialogMiddleware { }
    }
}

```

--------------------------------

### QML ActionCreator - Signal-based Action Dispatching

Source: https://context7.com/benlau/quickflux/llms.txt

Implements a clean API for triggering actions using QML's ActionCreator. Signals defined in an ActionCreator component are automatically converted into dispatcher actions. The signal name becomes the action type, and its parameters become the action's message properties. The example demonstrates how to define signals and use them in UI components to dispatch actions.

```qml
// actions/AppActions.qml
pragma Singleton
import QtQuick 2.0
import QuickFlux 1.1

ActionCreator {
    // Signals automatically become dispatcher actions
    // Signal name becomes action type
    // Parameters become message properties

    signal addTask(string title)
    signal setTaskDone(var uid, bool done)
    signal deleteTask(var uid)
    signal updateTaskTitle(var uid, string newTitle)
    signal setFilter(string filterType)
}

// Usage in views/components
import "../actions"

Button {
    text: "Add Task"
    onClicked: {
        // Call signal - automatically dispatches action
        AppActions.addTask("New task from button");
    }
}

TextField {
    id: taskInput
    onAccepted: {
        AppActions.addTask(taskInput.text);
        taskInput.text = "";
    }
}

CheckBox {
    checked: model.done
    onCheckedChanged: {
        AppActions.setTaskDone(model.uid, checked);
    }
}
```

--------------------------------

### QML ActionTypes - Type-Safe Action Constants

Source: https://context7.com/benlau/quickflux/llms.txt

Defines type-safe action constants using QML's KeyTable component. Each property declared in ActionTypes.qml automatically becomes a string constant representing the action type. This promotes consistency and reduces errors when dispatching or listening to actions. The example shows how to import and use these constants in other QML files.

```qml
// actions/ActionTypes.qml
pragma Singleton
import QtQuick 2.0
import QuickFlux 1.0

KeyTable {
    // Each property is auto-initialized with its name as the value
    property string addTask           // value: "addTask"
    property string setTaskDone       // value: "setTaskDone"
    property string deleteTask        // value: "deleteTask"
    property string setShowCompleted  // value: "setShowCompleted"
}

// Usage in other files
import "actions"

Filter {
    type: ActionTypes.addTask  // "addTask"
    onDispatched: {
        console.log("Action type:", type);
    }
}
```

--------------------------------

### CMake Configuration for Quickflux Middleware

Source: https://github.com/benlau/quickflux/blob/master/examples/middleware/CMakeLists.txt

Sets up the build environment for the Quickflux middleware. It defines the minimum CMake version, project name, includes Qt5 Core, and adds resource files. It also configures the executable and links necessary libraries.

```cmake
cmake_minimum_required(VERSION 3.8.2)

project(middleware)

set(CMAKE_INCLUDE_CURRENT_DIR ON)

set(CMAKE_AUTOMOC ON)

find_package(Qt5Core REQUIRED)

include_directories(${Qt5Qml_INCLUDE_DIRS})
include_directories(${Qt5Gui_INCLUDE_DIRS})

#include("${CMAKE_CURRENT_SOURCE_DIR}/../../CMakeLists.txt")

# Generate rules for building source files from the resources
qt5_add_resources(QRCS qml.qrc)

add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../../ ${CMAKE_CURRENT_BINARY_DIR}/quickflux)

message(STATUS "test" ${quickflux_SOURCES})

# Tell CMake to create the middleware executable
add_executable(middleware main.cpp ${QRCS} quickflux)

#target_link_libraries(middleware ${CMAKE_CURRENT_BINARY_DIR}/quickflux/libquickflux.a)
link_directories(quickflux)
target_link_libraries(middleware  quickflux)

qt5_use_modules(middleware Qml Gui)
```

--------------------------------

### C++ Integration with AppDispatcher

Source: https://context7.com/benlau/quickflux/llms.txt

Demonstrates how to integrate the AppDispatcher singleton into C++ applications. It shows how to obtain the dispatcher instance, dispatch actions with QVariantMap messages, and listen for dispatched actions using QObject::connect. This allows for seamless communication between C++ backend logic and QML frontend components.

```cpp
#include <QFAppDispatcher>

QQmlApplicationEngine engine;
QFAppDispatcher* dispatcher = QFAppDispatcher::instance(&engine);

// Dispatch action from C++
QVariantMap message;
message["title"] = "New Task";
message["priority"] = 1;
dispatcher->dispatch("addTask", QJSValue::fromVariant(message));

// Listen to actions from C++
QObject::connect(dispatcher, &QFDispatcher::dispatched,
    [](QString type, QJSValue message) {
        if (type == "addTask") {
            qDebug() << "Task added:" << message.property("title").toString();
        }
    }
);
```

--------------------------------

### Linking Libraries and Executable Creation

Source: https://github.com/benlau/quickflux/blob/master/examples/todo/CMakeLists.txt

Sets include and link directories for the QuickFlux library and defines the 'todo' executable. It adds dependencies on the QuickFlux external project and links against both QuickFlux (debug/optimized versions) and Qt5 libraries.

```cmake
link_directories("${PROJECT_BINARY_DIR}/QuickFlux/lib")
include_directories("${PROJECT_BINARY_DIR}/QuickFlux/include/quickflux")

add_executable(todo WIN32 ${todo_SRCS})
add_dependencies(todo QuickFlux)

target_link_libraries(todo debug quickfluxd optimized quickflux)
target_link_libraries(todo Qt5::Qml Qt5::Gui Qt5::Core Qt5::Quick)
```

--------------------------------

### Configure Single Singleton Store

Source: https://github.com/benlau/quickflux/wiki/Roadmap

Shows how to set up a single singleton Store with property aliases for child stores. This pattern provides direct access to specific store components while maintaining the hierarchical structure.

```QML
Store {
  id: rootStore

  property alias photoAlbum: photoAlbum

  PhotoAlbumStore {
    id: photoAlbum
  }

  property alias navigationStore: navigation

  NavigationStore {
    id: navigation
  }
}
```

--------------------------------

### Configure Multiple Singleton Stores

Source: https://github.com/benlau/quickflux/wiki/Roadmap

Demonstrates how to configure a Store component that manages multiple singleton stores. This approach allows grouping related stores under a single parent store component for better organization.

```QML
Store {
  id: bridge
  stores: [
    PhotoAlbumStore,
    NavigationStore
  ]  
}
```

--------------------------------

### Implement Todo App Main UI in QML

Source: https://context7.com/benlau/quickflux/llms.txt

This QML code defines the main application window for a Todo app, featuring task input, list view, and footer controls. It demonstrates unidirectional data flow using QuickFlux with middleware chain for logging and validation. Dependencies include QtQuick, QuickFlux, and custom stores/actions/middlewares.

```qml
// main.qml
import QtQuick 2.12
import QtQuick.Controls 2.12
import QuickFlux 1.1
import "stores"
import "actions"
import "middlewares"

ApplicationWindow {
    visible: true
    width: 640
    height: 480
    title: "Todo App"

    // Middleware chain
    MiddlewareList {
        applyTarget: AppActions
        LoggerMiddleware { }
        ValidationMiddleware { }
    }

    // Main content
    ColumnLayout {
        anchors.fill: parent
        anchors.margins: 10

        // Add task input
        RowLayout {
            TextField {
                id: taskInput
                Layout.fillWidth: true
                placeholderText: "Enter new task"

                onAccepted: {
                    if (text.trim()) {
                        AppActions.addTask(text.trim());
                        text = "";
                    }
                }
            }

            Button {
                text: "Add"
                onClicked: taskInput.accepted()
            }
        }

        // Task list
        ListView {
            Layout.fillWidth: true
            Layout.fillHeight: true

            // Direct binding to store
            model: MainStore.todo.model

            delegate: ItemDelegate {
                width: parent.width

                contentItem: RowLayout {
                    CheckBox {
                        id: checkbox
                        checked: model.done

                        onCheckedChanged: {
                            AppActions.setTaskDone(model.uid, checked);
                        }
                    }

                    Text {
                        Layout.fillWidth: true
                        text: model.title
                        font.strikeout: model.done
                    }

                    Button {
                        text: "×"
                        onClicked: {
                            AppActions.deleteTask(model.uid);
                        }
                    }
                }
            }
        }

        // Footer controls
        RowLayout {
            CheckBox {
                checked: MainStore.userPrefs.showCompleted
                text: "Show completed"

                onCheckedChanged: {
                    AppActions.setShowCompleted(checked);
                }
            }

            Text {
                Layout.fillWidth: true
                text: "Total: " + MainStore.todo.model.count
            }
        }
    }

    // Initialize app
    Component.onCompleted: {
        AppActions.startApp();
    }
}
```

--------------------------------

### QML AppScript for Manual Login Workflow

Source: https://context7.com/benlau/quickflux/llms.txt

Demonstrates a QML AppScript for handling a login process. It listens for login success or failure actions, navigates to the home view upon success, or displays an error dialog upon failure. The script also includes a condition to exit if the login is cancelled, ensuring proper workflow management.

```qml
// Alternative: Manual script execution
AppScript {
    id: loginScript
    autoExit: true

    script: {
        once(ActionTypes.loginSuccess, function(message) {
            console.log("Login successful:", message.username);
            AppActions.navigateTo(homeView);
        });

        once(ActionTypes.loginFailure, function(message) {
            console.log("Login failed:", message.error);
            errorDialog.show(message.error);
            exit(1);
        });

        once(ActionTypes.cancelLogin, exit.bind(this, 0));
    }

    Component.onCompleted: {
        // Run manually with custom message
        run({ source: "manual" });
    }
}

```

--------------------------------

### QML AppScript for Asynchronous Image Picking Workflow

Source: https://context7.com/benlau/quickflux/llms.txt

Implements an asynchronous workflow using AppScript for picking an image. It opens a file dialog, waits for user selection, navigates to a preview, and adds the selected photo to a store. The script ensures automatic callback cleanup and guaranteed execution order, exiting when the workflow is complete or cancelled.

```qml
// scripts/ImagePickerScript.qml
import QtQuick 2.0
import QuickFlux 1.0
import QtQuick.Dialogs 1.0
import "../actions"
import "../stores"

Item {
    FileDialog {
        id: dialog
        title: "Pick Image"
        nameFilters: ["Image files (*.jpg *.png)"]
    }

    Component {
        id: imagePreview
        ImagePreview { }
    }

    AppScript {
        // Trigger: Run when this action is dispatched
        runWhen: ActionTypes.askToPickPhoto

        // Cleanup: Auto-terminate and cleanup callbacks when finished
        autoExit: true

        script: {
            // Step 1: Open file dialog
            dialog.open();

            // Step 2: Wait for file selection
            once(dialog.onAccepted, function() {
                // Navigate to preview with selected file
                AppActions.navigateTo(imagePreview, {
                    source: dialog.fileUrl
                });
            }).then(ActionTypes.pickPhoto, function(message) {
                // Step 3: User confirmed - add to store
                PhotoStore.add(String(message.url));
                AppActions.navigateBack();
            });

            // Exit conditions - cleanup all callbacks
            once(dialog.onRejected, exit.bind(this, 0));
            once(ActionTypes.navigateBack, exit.bind(this, 0));
            once(ActionTypes.cancelPicker, exit.bind(this, 0));
        }

        onStarted: {
            console.log("Image picker workflow started");
        }

        onFinished: {
            console.log("Image picker workflow finished:", returnCode);
        }
    }
}

```

--------------------------------

### Integrate QuickFlux with CMake

Source: https://github.com/benlau/quickflux/blob/master/README.md

This code demonstrates how to add QuickFlux as an external project in CMake, configuring build paths, linking libraries, and including necessary headers. It also highlights the need to call `registerQuickFluxQmlTypes()`.

```cmake
include(ExternalProject)

ExternalProject_Add(QuickFlux
	PREFIX "${PROJECT_BINARY_DIR}/QuickFlux-build"
	GIT_REPOSITORY "https://github.com/benlau/quickflux.git"
	CMAKE_ARGS "-DCMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH}"
	                "-DCMAKE_INSTALL_PREFIX=${PROJECT_BINARY_DIR}/QuickFlux"
	                "-DCMAKE_INSTALL_LIBDIR=${PROJECT_BINARY_DIR}/QuickFlux/lib"
	                "-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}"
)

link_directories("${PROJECT_BINARY_DIR}/QuickFlux/lib")
include_directories("${PROJECT_BINARY_DIR}/QuickFlux/include/quickflux")

... 

add_dependencies(<your target> QuickFlux)
target_link_libraries(<your target>	debug quickfluxd optimized quickflux)

# Ensure to call registerQuickFluxQmlTypes(); in your C++ code.
```

--------------------------------

### AppListener: Dispatcher Event Listener with Filtering (QML)

Source: https://context7.com/benlau/quickflux/llms.txt

AppListener is a Quickflux component for listening to dispatcher messages, offering filtering and dependency management capabilities. It's ideal when the standard Store/Filter pattern is not suitable. It supports single or multiple filters, defining execution order with `waitFor`, and dynamic callback registration at runtime. Dependencies include QuickFlux.

```qml
import QtQuick 2.0
import QuickFlux 1.1
import "../actions"

Item {
    // Single filter
    AppListener {
        filter: ActionTypes.showNotification

        onDispatched: {
            notificationPopup.show(message.text, message.duration);
        }
    }

    // Multiple filters with waitFor
    AppListener {
        id: analyticsListener

        filters: [
            ActionTypes.addTask,
            ActionTypes.deleteTask,
            ActionTypes.setTaskDone
        ]

        onDispatched: {
            analytics.trackEvent(type, message);
        }
    }

    // Listener with dependency
    AppListener {
        // Wait for analyticsListener to process first
        waitFor: [analyticsListener.listenerId]
        filter: ActionTypes.addTask

        onDispatched: {
            // This executes after analyticsListener
            console.log("Task added, analytics tracked");
        }
    }

    // Dynamic callback registration
    AppListener {
        id: dynamicListener

        Component.onCompleted: {
            // Register callback at runtime
            on(ActionTypes.customEvent, function(message) {
                console.log("Custom event:", message);
            });

            // Register another callback
            on(ActionTypes.anotherEvent, function(message) {
                console.log("Another event:", message);
            });
        }
    }
}
```

--------------------------------

### Create Singleton QtObject with signals in QML

Source: https://github.com/benlau/quickflux/blob/master/README.md

Defines a QML singleton object containing openItem and removeItem signals. It can be imported across the application to dispatch actions via the QuickFlux dispatcher. No external dependencies beyond QtQuick 2.2 are required.

```QML
import QtQuick 2.2
pragma Singleton

QtObject {

  signal openItem(string id);

  signal removeItem(string id);

}
```

--------------------------------

### Create User Preferences Store in QML

Source: https://context7.com/benlau/quickflux/llms.txt

This QML store manages user preferences like showing completed tasks. It uses QuickFlux Store and Filter to handle actions for updating preferences. No external dependencies beyond QuickFlux and custom actions.

```qml
// stores/UserPrefsStore.qml
import QuickFlux 1.1
import "../actions"

Store {
    property bool showCompleted: true

    Filter {
        type: ActionTypes.setShowCompleted
        onDispatched: {
            showCompleted = message.value;
        }
    }
}
```

--------------------------------

### Match Actions with QuickFlux Filter Components

Source: https://context7.com/benlau/quickflux/llms.txt

Demonstrates declarative action filtering by type using QuickFlux Filter component. Shows single type matching and multiple type handling with conditional logic. Updates store properties based on dispatched actions and provides access to matched action type in callback.

```qml
// Multiple filter types
Store {
    property bool showCompleted: true
    property string currentFilter: "all"

    Filter {
        type: ActionTypes.setShowCompleted
        onDispatched: {
            showCompleted = message.value;
        }
    }

    Filter {
        types: [
            ActionTypes.showAllTasks,
            ActionTypes.showActiveTasks,
            ActionTypes.showCompletedTasks
        ]
        onDispatched: {
            // type contains the matched action type
            if (type === ActionTypes.showAllTasks) {
                currentFilter = "all";
            } else if (type === ActionTypes.showActiveTasks) {
                currentFilter = "active";
            } else if (type === ActionTypes.showCompletedTasks) {
                currentFilter = "completed";
            }
        }
    }
}
```

--------------------------------

### Implement Logger Middleware in QML

Source: https://context7.com/benlau/quickflux/llms.txt

This middleware logs all dispatched actions with timestamps for debugging. It extends QuickFlux Middleware and calls next() to continue the action chain. No inputs or outputs; it operates passively on the dispatch flow.

```qml
// middlewares/LoggerMiddleware.qml
import QuickFlux 1.1

Middleware {
    filterFunctionEnabled: true

    function dispatch(type, message) {
        var timestamp = new Date().toISOString();
        console.log("[" + timestamp + "]", type, JSON.stringify(message));
        next(type, message);
    }
}
```

--------------------------------

### Implement Todo Data Store with QML QuickFlux

Source: https://context7.com/benlau/quickflux/llms.txt

Creates a hierarchical data store using QuickFlux Store component with ListModel. Handles addTask, setTaskDone, and deleteTask actions through Filter components. Automatically increments UIDs and updates todo model state based on messages from AppDispatcher.

```qml
// stores/TodoStore.qml
import QtQuick 2.0
import QuickFlux 1.1
import "../actions"

Store {
    property alias model: todoModel
    property int nextUid: 1

    ListModel {
        id: todoModel
        // Initial data
        ListElement {
            uid: 0
            title: "First Task"
            done: false
        }
    }

    // Filter listens for specific action types
    Filter {
        type: ActionTypes.addTask
        onDispatched: {
            // message contains signal parameters
            todoModel.append({
                uid: nextUid++,
                title: message.title,
                done: false
            });
        }
    }

    Filter {
        type: ActionTypes.setTaskDone
        onDispatched: {
            for (var i = 0; i < todoModel.count; i++) {
                if (todoModel.get(i).uid === message.uid) {
                    todoModel.setProperty(i, "done", message.done);
                    break;
                }
            }
        }
    }

    Filter {
        type: ActionTypes.deleteTask
        onDispatched: {
            for (var i = 0; i < todoModel.count; i++) {
                if (todoModel.get(i).uid === message.uid) {
                    todoModel.remove(i);
                    break;
                }
            }
        }
    }
}
```

--------------------------------

### Hydrate: Serialize and Deserialize Store State (QML)

Source: https://context7.com/benlau/quickflux/llms.txt

The Hydrate utility in Quickflux allows for serializing (dehydrate) and deserializing (rehydrate) Store components to and from JSON. This is useful for persisting application state or for testing purposes. It integrates with Qt's Settings for saving state and handles auto-saving on application exit and auto-restoring on startup. Dependencies include QuickFlux and Qt.labs.settings.

```qml
import QtQuick 2.0
import QuickFlux 1.1
import Qt.labs.settings 1.0
import "../stores"

Item {
    // Save application state
    Button {
        text: "Save State"
        onClicked: {
            // Dehydrate extracts all properties from store
            var snapshot = Hydrate.dehydrate(MainStore);

            // Save to localStorage/settings
            settings.stateSnapshot = JSON.stringify(snapshot);

            console.log("State saved:", JSON.stringify(snapshot, null, 2));
        }
    }

    // Restore application state
    Button {
        text: "Restore State"
        onClicked: {
            try {
                var snapshot = JSON.parse(settings.stateSnapshot);

                // Rehydrate loads properties into store
                Hydrate.rehydrate(MainStore, snapshot);

                console.log("State restored");
            } catch(e) {
                console.error("Failed to restore state:", e);
            }
        }
    }

    // Reset to default state
    Button {
        text: "Reset State"
        onClicked: {
            var defaultState = {
                todo: {
                    model: [],
                    nextUid: 0
                },
                userPrefs: {
                    showCompleted: true,
                    filterType: "all"
                }
            };

            Hydrate.rehydrate(MainStore, defaultState);
        }
    }

    Settings {
        id: settings
        property string stateSnapshot: ""
    }

    // Auto-save on application exit
    Connections {
        target: Qt.application
        onAboutToQuit: {
            var snapshot = Hydrate.dehydrate(MainStore);
            settings.stateSnapshot = JSON.stringify(snapshot);
        }
    }

    // Auto-restore on startup
    Component.onCompleted: {
        if (settings.stateSnapshot) {
            try {
                var snapshot = JSON.parse(settings.stateSnapshot);
                Hydrate.rehydrate(MainStore, snapshot);
            } catch(e) {
                console.error("Failed to restore previous state:", e);
            }
        }
    }
}
```

--------------------------------

### Create Validation Middleware in QML

Source: https://context7.com/benlau/quickflux/llms.txt

This middleware validates actions before dispatching, blocking invalid ones like adding tasks without titles. It uses QuickFlux Middleware and checks action types. Limitations: Only validates addTask; does not handle other actions.

```qml
// middlewares/ValidationMiddleware.qml
import QuickFlux 1.1
import "../actions"

Middleware {
    filterFunctionEnabled: true

    function dispatch(type, message) {
        if (type === ActionTypes.addTask) {
            if (!message.title || message.title.trim() === "") {
                console.error("Validation failed: Task title cannot be empty");
                return;  // Block action
            }
        }

        next(type, message);
    }
}
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.