package org.litesoft.datt.client.ui.views.stories;

import org.litesoft.GWT.client.view.*;
import org.litesoft.GWT.client.widgets.*;
import org.litesoft.GWT.client.widgets.datatables.*;
import org.litesoft.GWT.forms.client.*;
import org.litesoft.bo.views.*;
import org.litesoft.datt.client.*;
import org.litesoft.datt.client.boviews.*;
import org.litesoft.datt.client.support.*;
import org.litesoft.datt.client.ui.widgets.*;
import org.litesoft.uispecification.*;

import com.google.gwt.user.client.ui.*;

import static org.litesoft.uispecification.FormWidgetCtrl.*;

public class MergeStoriesStepTwo extends ScreenView implements StoryFindable,
                                                               StoryViewNames,
                                                               TableClickCommand<StoryView>,
                                                               ViewUpdatable<StoryView> {
    private QBE_FormEngine mFE;

    private StoryViewDataProvider mDataProvider = StoryViewDataProvider.getInstance();
    private FormBinder<StoryView> mFormBinder0, mFormBinder1;

    private ObjectURL mStory0 = null;
    private ObjectURL mStory1 = null;

    @Override
    protected UriFragmentIdParams createRefreshParams() {
        return MergeStoriesStepTwoFactory.encodeParams( new TwoStoryURLs( mStory0, mStory1 ) );
    }

    public MergeStoriesStepTwo( String pSection, ViewDef pViewDef, TwoStoryURLs pTwoStoryURLs ) {
        super( title( pSection, pViewDef ) );

        if ( pTwoStoryURLs != null ) {
            mStory0 = pTwoStoryURLs.getStory0();
            mStory1 = pTwoStoryURLs.getStory1();
        }
        //todo: if no mStory0 show error and go back to MergeStory (lookup)
        addStandardTitleBar();

        addLeft( BackButton.factory( "Change From" ).add( ViewDefs.STORY_MERGE_STORIES, new UriFragmentIdParams.ScreenParamsFactory() {
            @Override
            public UriFragmentIdParams create( ViewDef pTarget ) {
                return MergeStoriesFactory.encodeParams( new TwoStoryURLs( mStory0, mStory1 ) );
            }
        } ).create() );

        SizeableVerticalPanel zUpperPanel = new SizeableVerticalPanel().stretchable();

        zUpperPanel.add( createSectionTitle( "Story to merge From" ) );
        zUpperPanel.add( new StoryInfoPanel( mFormBinder0 = new FormBinder<StoryView>( new FormEngine( new WidgetCtrlMap( VISIBLE_BUT_DISABLED ), //
                                                                                                       FormEngine.Mode.ViewRegular, null ), //
                                                                                       StoryViewMetaData.getInstance() ) ) );

        QBEscreenSupport zQBEscreenSupport = new QBEscreenSupport();
        SizeableVerticalPanel zFormPanel = zQBEscreenSupport.getQBEleft();
        SizeableQBEboxedPanel zQBEboxedPanel = zQBEscreenSupport.getQBEboxedPanel();

        FilteringTableModel<StoryView> zFilter =
                new FilteringTableModel<StoryView>( mDataProvider, true, this, null, false ); // Second 'this' allows auto "New"
        StoryViewTable zTable = new StoryViewTable( zFilter, this );
        zQBEboxedPanel.setWidget( zFilter.addReloadable( zTable ) );

        WidgetCtrlMap zWidgetCtrlMap = StoryFieldsPanel.createWidgetCtrlMap( VISIBLE_AND_ACTIVE_ENABLED );

        mFE = new QBE_FormEngine( zWidgetCtrlMap, null, zQBEboxedPanel, zFilter, zFilter );

        zFormPanel.add( mFE.createSectionTitle( "Story to merge Into" ) );

        zFormPanel.add( new StoryFieldsPanel( mFormBinder1 = new FormBinder<StoryView>( mFE, //
                                                                                        StoryViewMetaData.getInstance() ), mFE, null ) );

        add( new SizeableVerticalSplitPairPanel().stretchable().add( zUpperPanel, zQBEscreenSupport ) );
    }

    @Override
    public void aboutToShow() {
        super.aboutToShow();
        StoryScreenViewHelper.requestRequiredStory( this, mStory0, 0 );
    }

    @Override
    public void foundStory( StoryView pStoryView, Integer pRequestID ) {
        if ( pRequestID == 1 ) {
            modeEdit( pStoryView );
            return;
        }
        mFormBinder0.setExistingObject( pStoryView, FormEngine.Mode.ViewRegular );
        ObjectURL zStory = mStory1;
        modeSearch(); // clears mStory
        StoryScreenViewHelper.requestOptionalStory( this, zStory, 1 );
    }

    @Override
    protected void justLoaded() {
        super.justLoaded();
        mFE.setFocus();
    }

    @Override
    public void execute( StoryView pRowValue ) {
        if ( pRowValue != null ) {
            modeEdit( pRowValue );
        }
    }

    private void modeSearch() {
        mStory1 = null;
        mFE.setMode( FormEngine.Mode.Search );
    }

    private void modeEdit( StoryView pStoryView ) {
        mStory1 = pStoryView.getObjectURL();
        mFormBinder1.setExistingObject( mDataProvider.copyIntoNewTS( pStoryView ), FormEngine.Mode.EditFromSearch );
    }

    @Override
    public Widget getBottomBar() {
        LeftCenterRightHorizontalPanel zActionPanel = new LeftCenterRightHorizontalPanel();

        zActionPanel.addLeft( mFE.addEditRevertButton( createRevertButton() ) );
        zActionPanel.addCenter( mFE.addEditSubmitButton( createSubmitButton( mDataProvider, mFormBinder1, this ) ) );
        zActionPanel.addRight( mFE.addExistingUnchangedNextButton( true, ViewDefs.STORY_MERGE_STORIES_STEP_THREE, new UriFragmentIdParams.ScreenParamsFactory() {
            @Override
            public UriFragmentIdParams create( ViewDef pTarget ) {
                return MergeStoriesStepThreeFactory.encodeParams( new TwoStoryURLs( mStory0, mStory1 ) );
            }
        } ) );
        return zActionPanel;
    }

    @Override
    public void viewUpdated( StoryView pStoryView ) {
        modeEdit( pStoryView );
    }
}