examples/7guis/crud/src/main.cpp

Note

This Source File belongs to 7GUIs CRUD Example. Please follow the link for example explanation.

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2025 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
#include <range/v3/all.hpp>
 
#include <AUI/Platform/Entry.h>
#include <AUI/Platform/AWindow.h>
#include <AUI/Util/UIBuildingHelpers.h>
#include <AUI/View/AForEachUI.h>
#include <AUI/View/AButton.h>
#include "AUI/View/ATextField.h"
#include "AUI/View/AListView.h"
 
using namespace declarative;
 
struct User {
   AProperty<AString> name;
   AProperty<AString> surname;
   APropertyPrecomputed<AString> displayName = [this] { return "{}, {}"_format(name, surname); };
};
 
class CRUDWindow: public AWindow {
public:
   CRUDWindow(): AWindow("AUI - 7GUIs - CRUD", 300_dp, 200_dp) {
       setExtraStylesheet(AStylesheet {
         {
           c("selected"),
           BackgroundSolid { AColor::BLUE.transparentize(0.5f) },
         }
       });
 
       auto FILTER_VIEW = ranges::views::filter([this](const _<User>& user) {
           return user->displayName->startsWith(mFilterPrefix);
       });
 
       setContents(Vertical {
         Horizontal::Expanding {
           Vertical::Expanding {
             Horizontal {
               Label { "Filter prefix:" },
               _new<ATextField>() with_style { Expanding(1, 0) } && mFilterPrefix,
             },
             AScrollArea::Builder().withExpanding().withContents(
                 AUI_DECLARATIVE_FOR(i, *mUsers | FILTER_VIEW, AVerticalLayout) {
                   auto view = _new<ALabel>();
                   view & i->displayName;
                   connect(mSelectedUser, view, [this, &view = *view, i] {
                       view.setAssName("selected", mSelectedUser == i);
                   });
                   connect(view->clicked, [this, i] {
                       mSelectedUser = i;
                       mEditedUser.name = i->name;
                       mEditedUser.surname = i->surname;
                   });
                   return view;
                 }
             ).build() with_style { BackgroundSolid { AColor::WHITE } },
           },
           Centered::Expanding {
             _form({
               { "Name:", _new<ATextField>() && mEditedUser.name },
               { "Surname:", _new<ATextField>() && mEditedUser.surname },
             }),
           },
         },
         Horizontal {
           Button { "Create" }.connect(&AView::clicked, me::createClicked) & mCreateEnabled > &AView::setEnabled,
           Button { "Update" }.connect(&AView::clicked, me::updateClicked) & mUpdateEnabled > &AView::setEnabled,
           Button { "Delete" }.connect(&AView::clicked, me::deleteClicked) & mDeleteEnabled > &AView::setEnabled,
         },
       });
   }
 
private:
   AProperty<AVector<_<User>>> mUsers;
   User mEditedUser;
   AProperty<_<User>> mSelectedUser;
   AProperty<AString> mFilterPrefix;
   APropertyPrecomputed<bool> mCreateEnabled = [this] { return !(mEditedUser.surname->empty() || mEditedUser.name->empty()); };
   APropertyPrecomputed<bool> mDeleteEnabled = [this] { return mSelectedUser != nullptr; };
   APropertyPrecomputed<bool> mUpdateEnabled = [this] { return mCreateEnabled && mDeleteEnabled; };
 
   void createClicked() {
       mUsers.writeScope() << aui::ptr::manage(new User {
         .name = std::exchange(mEditedUser.name, {}), .surname = std::exchange(mEditedUser.surname, {}) });
   }
 
   void updateClicked() {
       (*mSelectedUser)->name = std::exchange(mEditedUser.name, {});
       (*mSelectedUser)->surname = std::exchange(mEditedUser.surname, {});
   }
 
   void deleteClicked() {
       mUsers.writeScope()->removeFirst(*mSelectedUser);
       mSelectedUser = nullptr;
   }
};
 
AUI_ENTRY {
   _new<CRUDWindow>()->show();
   return 0;
}

© 2025 AUI Framework Contributors. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. All trademarks are property of their respective owners.