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

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.commonfoundation.base.*;
import org.litesoft.ui.def.*;

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

import java.io.*;

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 Serializable mInitializationPayload = null;

    public AbstractFormDialog( UiFormDef formDef, String pTypeDisplayString, String pRootKey,
                               BusFormServicePeerChannel channel ) {
        super( "Form", Opaqueness.None );
        Confirm.isNotNull( "FormDef", mFormDef = formDef );
        Confirm.isNotNull( "TypeDisplayString", mTypeDisplayString = pTypeDisplayString );
        mRootKey = pRootKey;
        Confirm.isNotNull( "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 Serializable getInitializationPayload() {
        return mInitializationPayload;
    }

    public void setInitializationPayload( Serializable 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 );
            // todo: translate: LLshow();
        }
        return initialShowing;
    }

    private void postSetReceiverWidget( boolean pReturnValueFrom_preSetReceiverWidget ) {
        if ( !pReturnValueFrom_preSetReceiverWidget ) {
            // todo: translate: 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, Serializable pServicePeerXtra ) {
        mFormHandler.requestValues( mRootKey );
    }

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

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

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

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

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

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

    abstract protected String createDialogTitle();
}