o3de/Gems/LyShine/Code/Editor/CommandHierarchyItemDelete.cpp

/*
 * Copyright (c) Contributors to the Open 3D Engine Project.
 * For complete copyright and license terms please see the LICENSE at the root of this distribution.
 *
 * SPDX-License-Identifier: Apache-2.0 OR MIT
 *
 */
#include "EditorCommon.h"

#include <Animation/UiEditorAnimationBus.h>

CommandHierarchyItemDelete::CommandHierarchyItemDelete(UndoStack* stack,
    HierarchyWidget* hierarchy)
    : QUndoCommand()
    , m_stack(stack)
    , m_hierarchy(hierarchy)
    , m_entries()
{
    // true: Put the serialized data in m_undoXml.
    HierarchyClipboard::Serialize(m_hierarchy, m_hierarchy->selectedItems(), nullptr, m_entries, true);
    AZ_Assert(!m_entries.empty(), "Failed to serialize");

    setText(QString("delete element") + (m_entries.empty() ? "" : "s"));
}

void CommandHierarchyItemDelete::undo()
{
    UndoStackExecutionScope s(m_stack);

    HierarchyHelpers::CreateItemsAndElements(m_hierarchy, m_entries);

    UiEditorAnimListenerBus::Broadcast(&UiEditorAnimListenerBus::Events::OnUiElementsDeletedOrReAdded);
}

void CommandHierarchyItemDelete::redo()
{
    UndoStackExecutionScope s(m_stack);

    HierarchyHelpers::Delete(m_hierarchy, m_entries);

    UiEditorAnimListenerBus::Broadcast(&UiEditorAnimListenerBus::Events::OnUiElementsDeletedOrReAdded);
}

void CommandHierarchyItemDelete::Push(UndoStack* stack,
    HierarchyWidget* hierarchy,
    const QTreeWidgetItemRawPtrQList& selectedItems)
{
    if (stack->GetIsExecuting())
    {
        // This is a redundant Qt notification.
        // Nothing else to do.
        return;
    }

    if (selectedItems.empty())
    {
        // Nothing selected. Nothing to do.
        return;
    }

    stack->push(new CommandHierarchyItemDelete(stack, hierarchy));
}