package org.litesoft.GWT.forms.client.components.nonpublic;

import com.google.gwt.user.client.ui.*;
import org.litesoft.GWT.client.nonpublic.*;
import org.litesoft.GWT.client.widgets.*;
import org.litesoft.GWT.forms.client.*;
import org.litesoft.GWT.forms.client.rpc.*;
import org.litesoft.core.util.*;
import org.litesoft.rpcpassable.*;
import org.litesoft.ui.def.*;

public abstract class AbstractFormDialog extends AbstractDialog implements UiFormListener
{
    private final UiFormDef mFormDef;
    protected final String mTypeDisplayString;
    private String mRootKey;
    private final BusFormServicePeerChannel mChannel;

    private FormContainerReceiver mPanel = null;
    private UiFormHandler mFormHandler = null;
    private RPCpassable mInitializationPayload = null;

    public AbstractFormDialog( UiFormDef formDef, String pTypeDisplayString, String pRootKey,
                               BusFormServicePeerChannel channel )
    {
        super( "Form", Opaqueness.None );
        UtilsCommon.assertNotNull( "FormDef", mFormDef = formDef );
        UtilsCommon.assertNotNull( "TypeDisplayString", mTypeDisplayString = pTypeDisplayString );
        mRootKey = pRootKey;
        UtilsCommon.assertNotNull( "channel", mChannel = channel );
        initialize( createDialogTitle(), null );
    }

    protected Widget createBodyPanel()
    {
        return mPanel = new FormContainerReceiver();
    }

    public String getRootKey()
    {
        return mRootKey;
    }

    /**
     * Set the key of the Object to edit
     *
     * @param pRootKey a key of the Object to edit or <code>null</code> to create a new one
     */
    public void setRootKey( String pRootKey )
    {
        mRootKey = pRootKey;
    }

    public RPCpassable getInitializationPayload()
    {
        return mInitializationPayload;
    }

    public void setInitializationPayload(RPCpassable initializationPayload)
    {
        mInitializationPayload = initializationPayload;
    }

    public void hide()
    {
        if ( mFormHandler != null )
        {
            mFormHandler.dispose();
            mFormHandler = null;
        }
        super.hide();
    }

    public void show()
    {
        if ( mFormHandler == null )
        {
            mFormHandler = new UiFormHandler( mFormDef, mPanel, mInitializationPayload, mChannel, this );
        }
    }

    private boolean preSetReceiverWidget()
    {
        boolean initialShowing = mShowing;
        if ( !initialShowing )
        {
            setVisible( false );
            LLshow();
        }
        return initialShowing;
    }

    private void postSetReceiverWidget( boolean pReturnValueFrom_preSetReceiverWidget )
    {
        if ( !pReturnValueFrom_preSetReceiverWidget )
        {
            LLshowFini();
            setVisible( true );
        }
    }

    private class FormContainerReceiver extends ClippingSimplePanel
    {
        public FormContainerReceiver()
        {
            super( null );
            super.setWidget( new Label( "Problem Occured..." ) );
        }

        // 1st call on Form Container Rendered
        public void setWidget( Widget pWidget )
        {
            boolean zPRSWrv = preSetReceiverWidget();
            super.setWidget( pWidget );
            postSetReceiverWidget( zPRSWrv );
        }

        // 2nd call on Form Container Rendered
        public void relayout()
        {
            super.relayout();
        }
    }

    // 3rd call on Form Container Rendered
    public void formRendered( UiFormHandler pUiFormHandler, RPCpassable pServicePeerXtra )
    {
        mFormHandler.requestValues( mRootKey );
    }

    public void formValuesApplied( UiFormHandler pUiFormHandler, RPCpassable pServicePeerXtra )
    {
        setTitle( createDialogTitle() );
        mFormHandler.setFocus();
    }

    public boolean formActionRequested( UiFormHandler pUiFormHandler, String pActionID )
    {
        return false;
    }

    public void formActionSucceeded( UiFormHandler pUiFormHandler, String pActionID,
                                     RPCpassable pServicePeerXtra )
    {
    }

    public void formCloseRequested( UiFormHandler pUiFormHandler, RPCpassable pServicePeerXtra )
    {
        hide();
    }

    public void formChangeState( UiFormHandler pUiFormHandler, boolean pFormHasChanges )
    {
    }

    public void formErrorState( UiFormHandler pUiFormHandler, boolean pFormHasErrors )
    {
    }

    abstract protected String createDialogTitle();
}