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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * 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/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <sal/config.h>

#include <vector>

#include "gridwizard.hxx"
#include <com/sun/star/sdbc/DataType.hpp>
#include <com/sun/star/form/XGridColumnFactory.hpp>
#include <com/sun/star/awt/MouseWheelBehavior.hpp>
#include <com/sun/star/container/XNameContainer.hpp>
#include <sal/log.hxx>
#include <tools/debug.hxx>
#include "dbptools.hxx"
#include <helpids.h>

#define GW_STATE_DATASOURCE_SELECTION   0
#define GW_STATE_FIELDSELECTION         1


namespace dbp
{


    using namespace ::com::sun::star::uno;
    using namespace ::com::sun::star::lang;
    using namespace ::com::sun::star::beans;
    using namespace ::com::sun::star::sdbc;
    using namespace ::com::sun::star::container;
    using namespace ::com::sun::star::form;
    using namespace ::com::sun::star::awt;

    OGridWizard::OGridWizard(weld::Window* _pParent,
            const Reference< XPropertySet >& _rxObjectModel, const Reference< XComponentContext >& _rxContext )
        : OControlWizard(_pParent, _rxObjectModel, _rxContext)
        , m_bHadDataSelection(true)
    {
        initControlSettings(&m_aSettings);

        m_xPrevPage->set_help_id(HID_GRIDWIZARD_PREVIOUS);
        m_xNextPage->set_help_id(HID_GRIDWIZARD_NEXT);
        m_xCancel->set_help_id(HID_GRIDWIZARD_CANCEL);
        m_xFinish->set_help_id(HID_GRIDWIZARD_FINISH);
        setTitleBase(compmodule::ModuleRes(RID_STR_GRIDWIZARD_TITLE));

        // if we do not need the data source selection page ...
        if (!needDatasourceSelection())
        {   // ... skip it!
            skip();
            m_bHadDataSelection = false;
        }
    }

    bool OGridWizard::approveControl(sal_Int16 _nClassId)
    {
        if (FormComponentType::GRIDCONTROL != _nClassId)
            return false;

        Reference< XGridColumnFactory > xColumnFactory(getContext().xObjectModel, UNO_QUERY);
        return xColumnFactory.is();
    }

    void OGridWizard::implApplySettings()
    {
        const OControlWizardContext& rContext = getContext();

        // the factory for the columns
        Reference< XGridColumnFactory > xColumnFactory(rContext.xObjectModel, UNO_QUERY);
        DBG_ASSERT(xColumnFactory.is(), "OGridWizard::implApplySettings: should never have made it 'til here!");
            // (if we're here, what the hell happened in approveControl??)

        // the container for the columns
        Reference< XNameContainer > xColumnContainer(rContext.xObjectModel, UNO_QUERY);
        DBG_ASSERT(xColumnContainer.is(), "OGridWizard::implApplySettings: no container!");

        if (!xColumnFactory.is() || !xColumnContainer.is())
            return;

        static const char s_sMouseWheelBehavior[] = "MouseWheelBehavior";
        static const char s_sEmptyString[] = "";

        // collect "descriptors" for the to-be-created (grid)columns
        std::vector< OUString > aColumnServiceNames;  // service names to be used with the XGridColumnFactory
        std::vector< OUString > aColumnLabelPostfixes;    // postfixes to append to the column labels
        std::vector< OUString > aFormFieldNames;      // data field names

        aColumnServiceNames.reserve(getSettings().aSelectedFields.getLength());
        aColumnLabelPostfixes.reserve(getSettings().aSelectedFields.getLength());
        aFormFieldNames.reserve(getSettings().aSelectedFields.getLength());

        // loop through the selected field names
        const OUString* pSelectedFields = getSettings().aSelectedFields.getConstArray();
        const OUString* pEnd = pSelectedFields + getSettings().aSelectedFields.getLength();
        for (;pSelectedFields < pEnd; ++pSelectedFields)
        {
            // get the information for the selected column
            sal_Int32 nFieldType = DataType::OTHER;
            OControlWizardContext::TNameTypeMap::const_iterator aFind = rContext.aTypes.find(*pSelectedFields);
            if ( aFind != rContext.aTypes.end() )
                nFieldType = aFind->second;

            aFormFieldNames.push_back(*pSelectedFields);
            switch (nFieldType)
            {
                case DataType::BIT:
                case DataType::BOOLEAN:
                    aColumnServiceNames.push_back(OUString("CheckBox"));
                    aColumnLabelPostfixes.push_back(s_sEmptyString);
                    break;

                case DataType::TINYINT:
                case DataType::SMALLINT:
                case DataType::INTEGER:
                    aColumnServiceNames.push_back(OUString("NumericField"));
                    aColumnLabelPostfixes.push_back(s_sEmptyString);
                    break;

                case DataType::FLOAT:
                case DataType::REAL:
                case DataType::DOUBLE:
                case DataType::NUMERIC:
                case DataType::DECIMAL:
                    aColumnServiceNames.push_back(OUString("FormattedField"));
                    aColumnLabelPostfixes.push_back(s_sEmptyString);
                    break;

                case DataType::DATE:
                    aColumnServiceNames.push_back(OUString("DateField"));
                    aColumnLabelPostfixes.push_back(s_sEmptyString);
                    break;

                case DataType::TIME:
                    aColumnServiceNames.push_back(OUString("TimeField"));
                    aColumnLabelPostfixes.push_back(s_sEmptyString);
                    break;

                case DataType::TIMESTAMP:
                    aColumnServiceNames.push_back(OUString("DateField"));
                    aColumnLabelPostfixes.push_back(compmodule::ModuleRes(RID_STR_DATEPOSTFIX));

                    aFormFieldNames.push_back(*pSelectedFields);
                    aColumnServiceNames.push_back(OUString("TimeField"));
                    aColumnLabelPostfixes.push_back(compmodule::ModuleRes(RID_STR_TIMEPOSTFIX));
                    break;

                default:
                    aColumnServiceNames.push_back(OUString("TextField"));
                    aColumnLabelPostfixes.push_back(s_sEmptyString);
            }
        }

        DBG_ASSERT( aFormFieldNames.size() == aColumnServiceNames.size()
                &&  aColumnServiceNames.size() == aColumnLabelPostfixes.size(),
                "OGridWizard::implApplySettings: inconsistent descriptor sequences!");

        // now loop through the descriptions and create the (grid)columns out of th descriptors
        {
            Reference< XNameAccess > xExistenceChecker(xColumnContainer.get());

            std::vector< OUString >::const_iterator pColumnLabelPostfix = aColumnLabelPostfixes.begin();
            std::vector< OUString >::const_iterator pFormFieldName = aFormFieldNames.begin();

            for (const auto& rColumnServiceName : aColumnServiceNames)
            {
                // create a (grid)column for the (resultset)column
                try
                {
                    Reference< XPropertySet > xColumn( xColumnFactory->createColumn(rColumnServiceName), UNO_SET_THROW );
                    Reference< XPropertySetInfo > xColumnPSI( xColumn->getPropertySetInfo(), UNO_SET_THROW );

                    OUString sColumnName(rColumnServiceName);
                    disambiguateName(xExistenceChecker, sColumnName);

                    // the data field the column should be bound to
                    xColumn->setPropertyValue("DataField", makeAny(*pFormFieldName));
                    // the label
                    xColumn->setPropertyValue("Label", makeAny(*pFormFieldName + *pColumnLabelPostfix));
                    // the width (<void/> => column will be auto-sized)
                    xColumn->setPropertyValue("Width", Any());

                    if ( xColumnPSI->hasPropertyByName( s_sMouseWheelBehavior ) )
                        xColumn->setPropertyValue( s_sMouseWheelBehavior, makeAny( MouseWheelBehavior::SCROLL_DISABLED ) );

                    // insert the column
                    xColumnContainer->insertByName(sColumnName, makeAny(xColumn));
                }
                catch(const Exception&)
                {
                    SAL_WARN( "extensions.dbpilots", "OGridWizard::implApplySettings: "
                              "unexpected exception while creating the grid column for field " <<
                              *pFormFieldName );
                }

                ++pColumnLabelPostfix;
                ++pFormFieldName;
            }
        }
    }

    std::unique_ptr<BuilderPage> OGridWizard::createPage(WizardState _nState)
    {
        OString sIdent(OString::number(_nState));
        weld::Container* pPageContainer = m_xAssistant->append_page(sIdent);

        switch (_nState)
        {
            case GW_STATE_DATASOURCE_SELECTION:
                return std::make_unique<OTableSelectionPage>(pPageContainer, this);
            case GW_STATE_FIELDSELECTION:
                return std::make_unique<OGridFieldsSelection>(pPageContainer, this);
        }

        return nullptr;
    }

    vcl::WizardTypes::WizardState OGridWizard::determineNextState( WizardState _nCurrentState ) const
    {
        switch (_nCurrentState)
        {
            case GW_STATE_DATASOURCE_SELECTION:
                return GW_STATE_FIELDSELECTION;
            case GW_STATE_FIELDSELECTION:
                return WZS_INVALID_STATE;
        }

        return WZS_INVALID_STATE;
    }

    void OGridWizard::enterState(WizardState _nState)
    {
        OControlWizard::enterState(_nState);

        enableButtons(WizardButtonFlags::PREVIOUS, m_bHadDataSelection ? (GW_STATE_DATASOURCE_SELECTION < _nState) : GW_STATE_FIELDSELECTION < _nState);
        enableButtons(WizardButtonFlags::NEXT, GW_STATE_FIELDSELECTION != _nState);
        if (_nState < GW_STATE_FIELDSELECTION)
            enableButtons(WizardButtonFlags::FINISH, false);

        if (GW_STATE_FIELDSELECTION == _nState)
            defaultButton(WizardButtonFlags::FINISH);
    }


    bool OGridWizard::leaveState(WizardState _nState)
    {
        if (!OControlWizard::leaveState(_nState))
            return false;

        if (GW_STATE_FIELDSELECTION == _nState)
            defaultButton(WizardButtonFlags::NEXT);

        return true;
    }


    bool OGridWizard::onFinish()
    {
        if ( !OControlWizard::onFinish() )
            return false;

        implApplySettings();

        return true;
    }

    OGridFieldsSelection::OGridFieldsSelection(weld::Container* pPage, OGridWizard* pWizard)
        : OGridPage(pPage, pWizard, "modules/sabpilot/ui/gridfieldsselectionpage.ui", "GridFieldsSelection")
        , m_xExistFields(m_xBuilder->weld_tree_view("existingfields"))
        , m_xSelectOne(m_xBuilder->weld_button("fieldright"))
        , m_xSelectAll(m_xBuilder->weld_button("allfieldsright"))
        , m_xDeselectOne(m_xBuilder->weld_button("fieldleft"))
        , m_xDeselectAll(m_xBuilder->weld_button("allfieldsleft"))
        , m_xSelFields(m_xBuilder->weld_tree_view("selectedfields"))
    {
        enableFormDatasourceDisplay();

        m_xSelectOne->connect_clicked(LINK(this, OGridFieldsSelection, OnMoveOneEntry));
        m_xSelectAll->connect_clicked(LINK(this, OGridFieldsSelection, OnMoveAllEntries));
        m_xDeselectOne->connect_clicked(LINK(this, OGridFieldsSelection, OnMoveOneEntry));
        m_xDeselectAll->connect_clicked(LINK(this, OGridFieldsSelection, OnMoveAllEntries));

        m_xExistFields->connect_changed(LINK(this, OGridFieldsSelection, OnEntrySelected));
        m_xSelFields->connect_changed(LINK(this, OGridFieldsSelection, OnEntrySelected));
        m_xExistFields->connect_row_activated(LINK(this, OGridFieldsSelection, OnEntryDoubleClicked));
        m_xSelFields->connect_row_activated(LINK(this, OGridFieldsSelection, OnEntryDoubleClicked));
    }

    OGridFieldsSelection::~OGridFieldsSelection()
    {
    }

    void OGridFieldsSelection::Activate()
    {
        OGridPage::Activate();
        m_xExistFields->grab_focus();
    }

    bool OGridFieldsSelection::canAdvance() const
    {
        return false;
            // we're the last page in our wizard
    }

    void OGridFieldsSelection::initializePage()
    {
        OGridPage::initializePage();

        const OControlWizardContext& rContext = getContext();
        fillListBox(*m_xExistFields, rContext.aFieldNames);

        m_xSelFields->clear();
        const OGridSettings& rSettings = getSettings();
        const OUString* pSelected = rSettings.aSelectedFields.getConstArray();
        const OUString* pEnd = pSelected + rSettings.aSelectedFields.getLength();
        for (; pSelected < pEnd; ++pSelected)
        {
            m_xSelFields->append_text(*pSelected);
            m_xExistFields->remove_text(*pSelected);
        }

        implCheckButtons();
    }

    bool OGridFieldsSelection::commitPage( ::vcl::WizardTypes::CommitPageReason _eReason )
    {
        if (!OGridPage::commitPage(_eReason))
            return false;

        OGridSettings& rSettings = getSettings();
        const sal_Int32 nSelected = m_xSelFields->n_children();

        rSettings.aSelectedFields.realloc(nSelected);
        OUString* pSelected = rSettings.aSelectedFields.getArray();

        for (sal_Int32 i=0; i<nSelected; ++i, ++pSelected)
            *pSelected = m_xSelFields->get_text(i);

        return true;
    }

    void OGridFieldsSelection::implCheckButtons()
    {
        m_xSelectOne->set_sensitive(m_xExistFields->count_selected_rows() != 0);
        m_xSelectAll->set_sensitive(m_xExistFields->n_children() != 0);

        m_xDeselectOne->set_sensitive(m_xSelFields->count_selected_rows() != 0);
        m_xDeselectAll->set_sensitive(m_xSelFields->n_children() != 0);

        getDialog()->enableButtons(WizardButtonFlags::FINISH, 0 != m_xSelFields->n_children());
    }

    IMPL_LINK(OGridFieldsSelection, OnEntryDoubleClicked, weld::TreeView&, rList, bool)<--- syntax error
    {
        weld::Button* pSimulateButton = m_xExistFields.get() == &rList ? m_xSelectOne.get() : m_xDeselectOne.get();
        if (pSimulateButton->get_sensitive())
            OnMoveOneEntry(*pSimulateButton);
        return true;
    }

    IMPL_LINK_NOARG(OGridFieldsSelection, OnEntrySelected, weld::TreeView&, void)
    {
        implCheckButtons();
    }

    IMPL_LINK(OGridFieldsSelection, OnMoveOneEntry, weld::Button&, rButton, void)
    {
        bool bMoveRight = (m_xSelectOne.get() == &rButton);
        weld::TreeView& rMoveTo = bMoveRight ? *m_xSelFields : *m_xExistFields;

        // the index of the selected entry
        const sal_Int32 nSelected = bMoveRight ? m_xExistFields->get_selected_index() : m_xSelFields->get_selected_index();
        // the (original) relative position of the entry
        int nRelativeIndex = bMoveRight ? m_xExistFields->get_id(nSelected).toInt32() : m_xSelFields->get_id(nSelected).toInt32();

        sal_Int32 nInsertPos = -1;
        if (!bMoveRight)
        {   // need to determine an insert pos which reflects the original
            nInsertPos = 0;
            while (nInsertPos < rMoveTo.n_children())
            {
                if (rMoveTo.get_id(nInsertPos).toInt32() > nRelativeIndex)
                    break;
                ++nInsertPos;
            }
        }

        // the text of the entry to move
        OUString sMovingEntry = bMoveRight ? m_xExistFields->get_text(nSelected) : m_xSelFields->get_text(nSelected);

        // insert the entry preserving it's "relative position" entry data
        OUString sId(OUString::number(nRelativeIndex));
        rMoveTo.insert(nullptr, nInsertPos, &sMovingEntry, &sId, nullptr, nullptr, false, nullptr);

        // remove the entry from its old list
        if (bMoveRight)
        {
            sal_Int32 nSelectPos = m_xExistFields->get_selected_index();
            m_xExistFields->remove(nSelected);
            if ((nSelectPos != -1) && (nSelectPos < m_xExistFields->n_children()))
                m_xExistFields->select(nSelectPos);

            m_xExistFields->grab_focus();
        }
        else
        {
            sal_Int32 nSelectPos = m_xSelFields->get_selected_index();
            m_xSelFields->remove(nSelected);
            if ((nSelectPos != -1) && (nSelectPos < m_xSelFields->n_children()))
                m_xSelFields->select(nSelectPos);

            m_xSelFields->grab_focus();
        }

        implCheckButtons();
    }

    IMPL_LINK(OGridFieldsSelection, OnMoveAllEntries, weld::Button&, rButton, void)
    {
        bool bMoveRight = (m_xSelectAll.get() == &rButton);
        m_xExistFields->clear();
        m_xSelFields->clear();
        fillListBox(bMoveRight ? *m_xSelFields : *m_xExistFields, getContext().aFieldNames);

        implCheckButtons();
    }

}   // namespace dbp


/* vim:set shiftwidth=4 softtabstop=4 expandtab: */