// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.GWT.forms.client.components.factories.others;

import org.litesoft.GWT.client.widgets.*;
import org.litesoft.GWT.client.widgets.nonpublic.*;
import org.litesoft.GWT.forms.client.components.*;
import org.litesoft.GWT.forms.client.components.nonpublic.*;
import org.litesoft.GWT.forms.client.nonpublic.*;
import org.litesoft.ui.def.*;
import org.litesoft.ui.def.nonpublic.*;
import org.litesoft.ui.def.nonpublic.support.*;

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

import java.io.*;
import java.util.*;

public class TabsWidgetFactory implements ContainerFactory {
    public Widget createContainerWidget( FormInstanceComponentHandler pComponentHandler,
                                         UiDef pUiDef, FormMetaData pFormMetaData,
                                         DefWidgetStruct[] pChildDefWidgets ) {
        UiTabsDef zTabsDef = (UiTabsDef) pUiDef;
        ISizeableTabPanel zSTP = zTabsDef.isVertical() ? //
                                 (ISizeableTabPanel) new SizeableSelectorPanel() :
                                 new SizeableTabPanel().stretchable();
        HashMap zLabelCodeToIndexMap = new HashMap();
        for ( int i = 0; i < pChildDefWidgets.length; i++ ) {
            DefWidgetStruct zChild = pChildDefWidgets[i];
            UiTabDef zTabDef = (UiTabDef) zChild.getUiDef();
            if ( zTabDef.isDisabled() ) {
                continue;
            }
            Widget zWidget = zChild.getWidget(); // !null
            String zLabelID, zLabelText;
            boolean zAsHTML = false;
            zLabelID = zTabDef.getLabelID();
            LabelMetaData zLabelMetaData = pFormMetaData.getLabel( zTabDef );
            zLabelText = (zLabelMetaData != null) ? zLabelMetaData.getExternalText() : "No Label";
            String zFont = ApplyFont.toHtmlStyle( zTabDef.getLabelFont() );
            if ( zFont.length() != 0 ) {
                zAsHTML = true;
                zLabelText = "<span" + zFont + ">" + zLabelText + "</span>";
            }
            zLabelCodeToIndexMap.put( zLabelID, new Integer( i ) );
            zSTP.addTab( zLabelText, zAsHTML, zWidget );
        }

        AttributeMetaData zMD = pFormMetaData.getAttribute( zTabsDef );
        if ( zMD != null ) {
            new MyFormAdapter( pComponentHandler, zLabelCodeToIndexMap, zSTP, zMD, new NullFormComponent() ).init();
        }
        return (Widget) zSTP;
    }

    private static final class MyFormAdapter extends AbstractFormAttributeAdapter {
        private HashMap mLabelCodeToIndexMap;
        private ISizeableTabPanel mSTP;

        public MyFormAdapter( FormInstanceComponentHandler pComponentHandler, HashMap pLabelCodeToIndexMap, //
                              ISizeableTabPanel pSTP, AttributeMetaData pMD, IFormComponent pComponent ) {
            super( pComponentHandler, pMD, pComponent );
            mLabelCodeToIndexMap = pLabelCodeToIndexMap;
            mSTP = pSTP;
        }

        protected Widget initWidget() {
            return null;
        }

        protected Object convertSendableToComponentValue( Serializable pValue ) {
            return pValue;
        }

        protected String convertComponentValueToString( Object pValue ) {
            return null;
        }

        protected Object convertStringToComponentValue( String pValue ) {
            return null;
        }

        protected void setComponentCurrentValue( Object pNewComponentCurrentValue ) {
            super.setComponentCurrentValue( pNewComponentCurrentValue );
            if ( pNewComponentCurrentValue != null ) {
                Integer zIndex = (Integer) mLabelCodeToIndexMap.get( pNewComponentCurrentValue.toString() );
                if ( zIndex != null ) {
                    mSTP.selectTab( zIndex.intValue() );
                }
            }
        }
    }
}