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

import org.litesoft.GWT.client.*;
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.prioritizer.client.boviews.*;
import org.litesoft.uispecification.*;

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

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

public class Stories extends ClickableViewObjectQBEscreenView<StoryView> implements StoryViewNames,
                                                                                    ViewUpdatable<StoryView> {
    private ObjectURL mEditing = null;

    @Override
    protected UriFragmentIdParams createRefreshParams() {
        return StoriesFactory.encodeParams( mEditing );
    }

    public Stories( String pSection, ViewDef pViewDef, ObjectURL pEditing ) {
        super( title( pSection, pViewDef ), StoryViewDataProvider.getInstance() );

        mEditing = pEditing;

        addStandardTitleBar();

        SizeableQBEboxedPanel zQBEboxedPanel = getQBEboxedPanel();

        FilteringTableModel<StoryView> zFilter = new FilteringTableModel<StoryView>( mDataProvider, true, this, this, true ); // Second 'this' allows "New"
        zQBEboxedPanel.setWidget( zFilter.addReloadable( new SingleSelectRegularTable<StoryView>( zFilter, new TableDef(), this ) ) );

        WidgetCtrlMap zWidgetCtrlMap = new WidgetCtrlMap( VISIBLE_BUT_DISABLED );

        zWidgetCtrlMap.add( SEARCH_FILTER.unique(), aName );
        zWidgetCtrlMap.add( SEARCH_FILTER, aDescription );
        zWidgetCtrlMap.add( Visible( Search ).enable( Search ).searchFilter(), aShowDone );
        zWidgetCtrlMap.add( EDIT_ONLY.always(), aIsDone );
        zWidgetCtrlMap.add( Visible( Existing ).enable( No ), aChanges, aCreatorFullName, aPriorityToDisplay );

        mFE = new QBE_FormEngine( zWidgetCtrlMap, null, zQBEboxedPanel, zFilter, zFilter );
        mFE.setFilterTransformer( new ShowBooleanUpdateFilterTransformer( mFE.getFilterTransformer(), aShowDone, aIsDone, null, false ) );
        mFormBinder = new FormBinder<StoryView>( mFE, StoryViewMetaData.getInstance() );

        add( mFE.createSectionTitle( "Story" ) );

        StoryFieldsPanel zStoryFieldsPanel = new StoryFieldsPanel( mFormBinder );

        add( zStoryFieldsPanel );

        mFE.setPointerWidget( zStoryFieldsPanel.getPointerField() );
    }

    @Override
    public void aboutToShow() {
        super.aboutToShow();
        ObjectURL zEditing = mEditing;
        modeSearch();
        if ( zEditing != null ) {
            mDataProvider.requestRow( zEditing, new FetchRowDataProviderCallBack<StoryView>() {
                @Override
                public void success( StoryView pRow ) {
                    if ( pRow != null ) {
                        modeEdit( pRow );
                    }
                }

                @Override
                public void error( String pError ) {
                    getStatusMessageSinc().setErrorMessage( pError );
                }
            } );
        }
    }

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

    @Override
    protected void processVO( StoryView pRowValue ) {
        if ( pRowValue != null ) {
            modeEdit( pRowValue );
        } else {
            modeNew();
        }
    }

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

        zActionPanel.addLeft( mFE.addEditRevertButton( createRevertButton() ) );
        zActionPanel.addCenter( mFE.addEditSubmitButton( createSubmitButton( mDataProvider, mFormBinder, this ) ) );
        zActionPanel.addRight( mFE.addEditSubmitButton( createSubmitButton( mDataProvider, mFormBinder, ViewDef.HOME ) ) );

        return zActionPanel;
    }

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

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

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

    private void modeNew() {
        mEditing = null;
        mFormBinder.setNewObject( StoryView.createNew() );
        // mFE.setNamedComponentValueAsStory( aLogonEmail, pLogonEmail );
        mFE.setFocus();
    }

    private static class TableDef extends BoTableDefinition<StoryView> implements StoryViewNames,
                                                                                  DataTableStyle {
        public TableDef() {
            StoryViewMetaData zMD = StoryViewMetaData.getInstance();

            addColumn( zMD.getBoAttribute( aName ) ); // .initialWidth( FontSizer.get( TABLE_TEXT ).EMsPlus( 20, CELL_PADDING ) );
            addColumn( zMD.getBoAttribute( aDescriptionThreeLines ), "Description" ); // .initialWidth( FontSizer.get( TABLE_TEXT ).EMsPlus( 40, CELL_PADDING ) );
            addColumn( zMD.getBoAttribute( aIsDone ), "Done" ).initialWidth( FontSizer.get( TABLE_TEXT ).EMsPlus( 4, CELL_PADDING ) );
            addColumn( zMD.getBoAttribute( aPriorityToDisplay ), "Priority" ); // .initialWidth( FontSizer.get( TABLE_TEXT ).EMsPlus( 20, CELL_PADDING ) );
            addColumn( zMD.getBoAttribute( aPriorityLastChangedBy ),
                       "Prioritized By" ); // .initialWidth( FontSizer.get( TABLE_TEXT ).EMsPlus( 20, CELL_PADDING ) );
        }
    }

    private static class StoryFieldsPanel extends SizeableVerticalSplitPairPanel implements StoryViewNames {
        private Widget mPointerField;

        public Widget getPointerField() {
            return mPointerField;
        }

        public StoryFieldsPanel( FormBinder<StoryView> pFB ) {
            stretchable();

            add( createUpperWidget( pFB ) );
            add( createLowerWidget( pFB ) );
        }

        private Widget createUpperWidget( FormBinder<StoryView> pFB ) {
            SizeableVerticalPanel zPanel = new SizeableVerticalPanel().stretchable();

            zPanel.add( createNamePlus( pFB ) );
            zPanel.add( pFB.add( aDescription ) );

            return zPanel;
        }

        private Widget createNamePlus( FormBinder<StoryView> pFB ) {
            SizeableHorizontalPanel zPanel = new SizeableHorizontalPanel().stretchableHorizontally();

            zPanel.add( mPointerField = pFB.add( aName ) );
            zPanel.add( new SizeableSpacer( 10 ).stretchableHorizontally() );
            zPanel.add( createDoneWidget( pFB ) );

            return zPanel;
        }

        private Widget createDoneWidget( FormBinder<StoryView> pFB ) {
            VerticalPanel zPanel = new VerticalPanel();

            zPanel.add( pFB.add( aShowDone ) );
            zPanel.add( pFB.add( aIsDone ) );

            return zPanel;
        }

        private Widget createLowerWidget( FormBinder<StoryView> pFB ) {
            SizeableVerticalPanel zPanel = new SizeableVerticalPanel().stretchable();

            zPanel.add( pFB.add( aChanges ) );
            zPanel.add( createMiscWidget( pFB ) );

            return zPanel;
        }

        private Widget createMiscWidget( FormBinder<StoryView> pFB ) {
            SizeableHorizontalPanel zPanel = new SizeableHorizontalPanel().stretchableHorizontally();

            zPanel.add( pFB.add( aCreatorFullName, "Created By" ) );
            zPanel.add( pFB.add( aPriorityToDisplay, "Priority" ) );

            return zPanel;
        }
    }
}