// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.uispecification;

import org.litesoft.bo.*;

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

public final class FormWidgetCtrl
{
    public FormWidgetAspectCtrl getVisible()
    {
        return mVisible;
    }

    public FormWidgetAspectCtrl getEnable()
    {
        return mEnable;
    }

    public boolean isSearchFilter()
    {
        return mSearchFilter;
    }

    public boolean isEditRequired()
    {
        return mEditRequired;
    }

    public boolean isUnique()
    {
        return isFilterType( BoAccessorFilterType.Unique );
    }

    public boolean isAlways()
    {
        return isFilterType( BoAccessorFilterType.Always );
    }

    public BoAccessorFilterType getFilterType()
    {
        return mFilterType;
    }

    public static final FormWidgetCtrl VISIBLE_AND_ENABLED = new FormWidgetCtrl( Yes, false, false, null, Yes );
    public static final FormWidgetCtrl VISIBLE_BUT_DISABLED = new FormWidgetCtrl( Yes, false, false, null, No );
    public static final FormWidgetCtrl VISIBLE_AND_ACTIVE_ENABLED = new FormWidgetCtrl( Yes, false, false, null, Active );

    public static final FormWidgetCtrl SEARCH_FILTER = new FormWidgetCtrl( Yes, true, false, null, Active );

    public static final FormWidgetCtrl HIDDEN = new FormWidgetCtrl( No, false, false, null, No );
    public static final FormWidgetCtrl VIEW_ONLY = new FormWidgetCtrl( Edit, false, false, null, Edit );
    public static final FormWidgetCtrl EDIT_ONLY = new FormWidgetCtrl( Edit, false, false, null, Edit );
    public static final FormWidgetCtrl SEARCH_ONLY = new FormWidgetCtrl( Search, false, false, null, Search );

    public static FormWidgetCtrl Visible( FormWidgetAspectCtrl pCtrl )
    {
        pCtrl = FormWidgetAspectCtrl.deNull( pCtrl );
        return new FormWidgetCtrl( pCtrl, false, false, null, No );
    }

    public FormWidgetCtrl enable( FormWidgetAspectCtrl pCtrl )
    {
        pCtrl = FormWidgetAspectCtrl.deNull( pCtrl );
        return getEnable() == pCtrl ? this : //
               new FormWidgetCtrl( getVisible(), //
                                   isSearchFilter(), //
                                   isEditRequired(), //
                                   getFilterType(), //
                                   pCtrl );
    }

    public FormWidgetCtrl searchFilter()
    {
        return isSearchFilter() ? this : update( true, false );
    }

    public FormWidgetCtrl required()
    {
        return isEditRequired() ? this : update( false, true );
    }

    public FormWidgetCtrl unique()
    {
        return update( BoAccessorFilterType.Unique );
    }

    public FormWidgetCtrl always()
    {
        return update( BoAccessorFilterType.Always );
    }

    private boolean isFilterType( BoAccessorFilterType pFilterType )
    {
        return getFilterType() == pFilterType;
    }

    private FormWidgetCtrl update( BoAccessorFilterType pFilterType )
    {
        return getFilterType() == pFilterType ? this : //
               new FormWidgetCtrl( getVisible(), //
                                   isSearchFilter(), //
                                   isEditRequired(), //
                                   pFilterType, //
                                   getEnable() );
    }

    private FormWidgetCtrl update( boolean pSearchFilter, boolean pEditRequired )
    {
        return new FormWidgetCtrl( mVisible, //
                                   isSearchFilter() | pSearchFilter, //
                                   isEditRequired() | pEditRequired, //
                                   getFilterType(), //
                                   mEnable );
    }

    private FormWidgetAspectCtrl mVisible, mEnable;
    private boolean mSearchFilter, mEditRequired;
    private BoAccessorFilterType mFilterType;

    private FormWidgetCtrl( FormWidgetAspectCtrl pVisible, boolean pSearchFilter, boolean pEditRequired, BoAccessorFilterType pFilterType, FormWidgetAspectCtrl pEnable )
    {
        mVisible = pVisible;
        mEnable = pEnable;
        mSearchFilter = pSearchFilter;
        mEditRequired = pEditRequired;
        mFilterType = (pFilterType != null) ? pFilterType : BoAccessorFilterType.Regular;
    }

    private void flag( StringBuilder pSB, String pWhat, boolean pFlag )
    {
        if ( pFlag )
        {
            pSB.append( ", " ).append( pWhat );
        }
    }

    @Override
    public String toString()
    {

        StringBuilder sb = new StringBuilder().append( mFilterType );
        flag( sb, "SearchFilter", mSearchFilter );
        flag( sb, "EditRequired", mEditRequired );
        return "FormWidgetCtrl(" + sb + "):\n" + //
               "    Visible=" + mVisible + "\n" + //
               "    Enable=" + mEnable;
    }
}