/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/

#include "connectionview.h"
#include "connectionviewwidget.h"

#include "backendmodel.h"
#include "bindingmodel.h"
#include "connectionmodel.h"
#include "dynamicpropertiesmodel.h"

#include <bindingproperty.h>
#include <nodeabstractproperty.h>
#include <variantproperty.h>
#include <signalhandlerproperty.h>
#include <qmldesignerplugin.h>
#include <viewmanager.h>

#include <utils/qtcassert.h>

#include <QTableView>

namespace QmlDesigner {

namespace  Internal {

ConnectionView::ConnectionView(QObject *parent) : AbstractView(parent),
    m_connectionViewWidget(new ConnectionViewWidget()),
    m_connectionModel(new ConnectionModel(this)),
    m_bindingModel(new BindingModel(this)),
    m_dynamicPropertiesModel(new DynamicPropertiesModel(false, this)),
    m_backendModel(new BackendModel(this))
{
    connectionViewWidget()->setBindingModel(m_bindingModel);
    connectionViewWidget()->setConnectionModel(m_connectionModel);
    connectionViewWidget()->setDynamicPropertiesModel(m_dynamicPropertiesModel);
    connectionViewWidget()->setBackendModel(m_backendModel);
}

ConnectionView::~ConnectionView() = default;

void ConnectionView::modelAttached(Model *model)
{
    AbstractView::modelAttached(model);
    bindingModel()->selectionChanged(QList<ModelNode>());
    dynamicPropertiesModel()->reset();
    connectionModel()->resetModel();
    connectionViewWidget()->resetItemViews();
    backendModel()->resetModel();
}

void ConnectionView::modelAboutToBeDetached(Model *model)
{
    AbstractView::modelAboutToBeDetached(model);
    bindingModel()->selectionChanged(QList<ModelNode>());
    dynamicPropertiesModel()->reset();
    connectionModel()->resetModel();
    connectionViewWidget()->resetItemViews();
}

void ConnectionView::nodeCreated(const ModelNode & /*createdNode*/)
{
//bindings
    connectionModel()->resetModel();
}

void ConnectionView::nodeRemoved(const ModelNode & /*removedNode*/,
                                 const NodeAbstractProperty & /*parentProperty*/,
                                 AbstractView::PropertyChangeFlags /*propertyChange*/)
{
     connectionModel()->resetModel();
}

void ConnectionView::nodeReparented(const ModelNode & /*node*/, const NodeAbstractProperty & /*newPropertyParent*/,
                               const NodeAbstractProperty & /*oldPropertyParent*/, AbstractView::PropertyChangeFlags /*propertyChange*/)
{
    connectionModel()->resetModel();
}

void ConnectionView::nodeIdChanged(const ModelNode & /*node*/, const QString & /*newId*/, const QString & /*oldId*/)
{
    connectionModel()->resetModel();
    bindingModel()->resetModel();
    dynamicPropertiesModel()->resetModel();
}

void ConnectionView::propertiesRemoved(const QList<AbstractProperty> &propertyList)
{
    for (const AbstractProperty &property : propertyList) {
        if (property.isDefaultProperty())
            connectionModel()->resetModel();

        dynamicPropertiesModel()->dispatchPropertyChanges(property);
    }
}

void ConnectionView::propertiesAboutToBeRemoved(const QList<AbstractProperty> &propertyList)
{
    for (const AbstractProperty &property : propertyList) {
        if (property.isBindingProperty()) {
            bindingModel()->bindingRemoved(property.toBindingProperty());
            dynamicPropertiesModel()->bindingRemoved(property.toBindingProperty());
        } else if (property.isVariantProperty()) {
            dynamicPropertiesModel()->variantRemoved(property.toVariantProperty());
        } else if (property.isSignalHandlerProperty()) {
            connectionModel()->removeRowFromTable(property.toSignalHandlerProperty());
        }
    }
}

void ConnectionView::variantPropertiesChanged(const QList<VariantProperty> &propertyList,
                                         AbstractView::PropertyChangeFlags /*propertyChange*/)
{
    for (const VariantProperty &variantProperty : propertyList) {
        if (variantProperty.isDynamic())
            dynamicPropertiesModel()->variantPropertyChanged(variantProperty);
        if (variantProperty.isDynamic() && variantProperty.parentModelNode().isRootNode())
            backendModel()->resetModel();

        connectionModel()->variantPropertyChanged(variantProperty);

        dynamicPropertiesModel()->dispatchPropertyChanges(variantProperty);
    }
}

void ConnectionView::bindingPropertiesChanged(const QList<BindingProperty> &propertyList,
                                         AbstractView::PropertyChangeFlags /*propertyChange*/)
{
    for (const BindingProperty &bindingProperty : propertyList) {
        bindingModel()->bindingChanged(bindingProperty);
        if (bindingProperty.isDynamic())
            dynamicPropertiesModel()->bindingPropertyChanged(bindingProperty);
        if (bindingProperty.isDynamic() && bindingProperty.parentModelNode().isRootNode())
            backendModel()->resetModel();

        connectionModel()->bindingPropertyChanged(bindingProperty);

        dynamicPropertiesModel()->dispatchPropertyChanges(bindingProperty);
    }
}

void ConnectionView::signalHandlerPropertiesChanged(const QVector<SignalHandlerProperty> &propertyList,
                                                    AbstractView::PropertyChangeFlags /*propertyChange*/)
{
    for (const SignalHandlerProperty &signalHandlerProperty : propertyList)
        connectionModel()->abstractPropertyChanged(signalHandlerProperty);
}

void ConnectionView::selectedNodesChanged(const QList<ModelNode> & selectedNodeList,
                                     const QList<ModelNode> & /*lastSelectedNodeList*/)
{
    bindingModel()->selectionChanged(selectedNodeList);
    dynamicPropertiesModel()->reset();
    connectionViewWidget()->bindingTableViewSelectionChanged(QModelIndex(), QModelIndex());
    connectionViewWidget()->dynamicPropertiesTableViewSelectionChanged(QModelIndex(), QModelIndex());

    if (connectionViewWidget()->currentTab() == ConnectionViewWidget::BindingTab
            || connectionViewWidget()->currentTab() == ConnectionViewWidget::DynamicPropertiesTab)
        emit connectionViewWidget()->setEnabledAddButton(selectedNodeList.count() == 1);
}

void ConnectionView::auxiliaryDataChanged(const ModelNode &node,
                                          const PropertyName &name,
                                          const QVariant &data)
{
    Q_UNUSED(node)

    // Check if the auxiliary data is actually the locked property or if it is unlocked
    if (name != QmlDesigner::lockedProperty || !data.toBool())
        return;

    QItemSelectionModel *selectionModel = connectionTableView()->selectionModel();
    if (!selectionModel->hasSelection())
        return;

    QModelIndex modelIndex = selectionModel->currentIndex();
    if (!modelIndex.isValid() || !model())
        return;

    const int internalId = connectionModel()->data(connectionModel()->index(modelIndex.row(),
                                                                            ConnectionModel::TargetModelNodeRow),
                                                   ConnectionModel::UserRoles::InternalIdRole).toInt();
    ModelNode modelNode = modelNodeForInternalId(internalId);

    if (modelNode.isValid() && ModelNode::isThisOrAncestorLocked(modelNode))
        selectionModel->clearSelection();
}

void ConnectionView::importsChanged(const QList<Import> & /*addedImports*/, const QList<Import> & /*removedImports*/)
{
    backendModel()->resetModel();
}

void ConnectionView::currentStateChanged(const ModelNode &node)
{
    dynamicPropertiesModel()->reset();
}

WidgetInfo ConnectionView::widgetInfo()
{
    return createWidgetInfo(m_connectionViewWidget.data(),
                            QLatin1String("ConnectionView"),
                            WidgetInfo::LeftPane,
                            0,
                            tr("Connections"));
}

bool ConnectionView::hasWidget() const
{
    return true;
}

bool ConnectionView::isWidgetEnabled()
{
    return widgetInfo().widget->isEnabled();
}

QTableView *ConnectionView::connectionTableView() const
{
    return connectionViewWidget()->connectionTableView();
}

QTableView *ConnectionView::bindingTableView() const
{
    return connectionViewWidget()->bindingTableView();
}

QTableView *ConnectionView::dynamicPropertiesTableView() const
{
    return connectionViewWidget()->dynamicPropertiesTableView();
}

QTableView *ConnectionView::backendView() const
{
    return connectionViewWidget()->backendView();
}

ConnectionViewWidget *ConnectionView::connectionViewWidget() const
{
    return m_connectionViewWidget.data();
}

ConnectionModel *ConnectionView::connectionModel() const
{
    return m_connectionModel;
}

BindingModel *ConnectionView::bindingModel() const
{
    return m_bindingModel;
}

DynamicPropertiesModel *ConnectionView::dynamicPropertiesModel() const
{
    return m_dynamicPropertiesModel;
}

BackendModel *ConnectionView::backendModel() const
{
    return m_backendModel;
}

ConnectionView *ConnectionView::instance()
{

    static ConnectionView *s_instance = nullptr;

    if (s_instance)
        return s_instance;

    const auto views = QmlDesignerPlugin::instance()->viewManager().views();
    for (auto *view : views) {
        ConnectionView *myView = qobject_cast<ConnectionView*>(view);
        if (myView)
            s_instance =  myView;
    }

    QTC_ASSERT(s_instance, return nullptr);
    return s_instance;
}

} // namesapce Internal

} // namespace QmlDesigner
