module user.Decoration;

import tango.util.log.Trace;

import dwt.dwthelper.utils;
import dwt.DWT;

import dwt.layout.GridLayout;
import dwt.layout.GridData;

import dwt.graphics.Image;

import dwt.widgets.Text;
import dwt.widgets.Control;
import dwt.widgets.Composite;
import dwt.widgets.Group;
import dwt.widgets.Display;
import dwt.widgets.Shell;
import dwt.widgets.Listener;
import dwt.widgets.Event;

import dwtx.jface.bindings.keys.KeyStroke;

import dwtx.jface.dialogs.TitleAreaDialog;
import dwtx.jface.dialogs.IDialogConstants;
import dwtx.jface.dialogs.IMessageProvider;
import dwtx.jface.dialogs.Dialog;
import dwtx.jface.resource.JFaceResources;

import dwtx.jface.fieldassist.FieldDecorationRegistry;
import dwtx.jface.fieldassist.FieldDecoration;
import dwtx.jface.fieldassist.DecoratedField;
import dwtx.jface.fieldassist.TextControlCreator;
import dwtx.jface.fieldassist.ContentProposalAdapter;
import dwtx.jface.fieldassist.TextContentAdapter;
import dwtx.jface.fieldassist.SimpleContentProposalProvider;
import dwtx.jface.fieldassist.IContentProposal;

import dwtx.jface.viewers.ILabelProvider;
import dwtx.jface.viewers.ILabelProviderListener;

version(JIVE) import jive.stacktrace;

class MyDialog : TitleAreaDialog {

    private DecoratedField textField;
    private uint step;
    private FieldDecoration[] decos;

    this( Shell parent ){
        super(parent);
    }
    protected Control createContents(Composite parent) {
        Control contents = super.createContents(parent);
        setTitle("Show Decoration");
        setMessage("Type into the text field to change the decoration", IMessageProvider.INFORMATION);
        return contents;
    }
    protected  Control  createDialogArea(Composite parent) {

        Composite comp = new Composite(parent, DWT.NONE);

        comp.setLayoutData(new GridData(GridData.FILL_BOTH));

        comp.setLayout(new GridLayout(1, false));


        auto registry = FieldDecorationRegistry.getDefault();
        decos ~= registry.getFieldDecoration(FieldDecorationRegistry.DEC_CONTENT_PROPOSAL );
        decos ~= registry.getFieldDecoration(FieldDecorationRegistry.DEC_ERROR );
        decos ~= registry.getFieldDecoration(FieldDecorationRegistry.DEC_ERROR_QUICKFIX );
        decos ~= registry.getFieldDecoration(FieldDecorationRegistry.DEC_INFORMATION );
        decos ~= registry.getFieldDecoration(FieldDecorationRegistry.DEC_REQUIRED );
        decos ~= registry.getFieldDecoration(FieldDecorationRegistry.DEC_WARNING );
        decos ~= null;

        with( textField = new DecoratedField(comp, DWT.BORDER, new TextControlCreator())){
            addFieldDecoration( decos[0], DWT.TOP | DWT.LEFT, false);

            getLayoutControl().setLayoutData( new GridData(
                GridData.FILL_HORIZONTAL  ) );

            auto text = cast(Text)getControl();
            assert(text);
            text.addListener(DWT.Verify, dgListener(&handleVerify));
        }
        Text text;
        with( text = new Text( comp, DWT.BORDER )){
            auto gd = new GridData( GridData.FILL, GridData.VERTICAL_ALIGN_CENTER, true, false );
            gd.horizontalIndent = registry.getMaximumDecorationWidth();
            setLayoutData( gd );
            setText( "without Decoration" );

        }
            ContentProposalAdapter adapter = new ContentProposalAdapter(
                text,
                new TextContentAdapter(),
                new SimpleContentProposalProvider([
                    "The very first proposal"[],
                    "second proposal",
                    "and a last one"]),
                KeyStroke.getInstance(DWT.CTRL, ' '),
                null);
            adapter.setLabelProvider( new class ILabelProvider {
                uint idx;
                Image  getImage(Object element){
                    idx++;
                    switch(idx % 4){
                    case 0: return JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_INFO);
                    case 1: return JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_WARNING);
                    case 2: return JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_ERROR);
                    case 3: return JFaceResources.getImage(Dialog.DLG_IMG_HELP);
                    default: return null;
                    }
                }
                String     getText(Object element){
                    return (cast(IContentProposal)element).getContent();
                }
                void   addListener(ILabelProviderListener listener){}
                void   dispose(){}
                bool   isLabelProperty(Object element, String property){ return true; }
                void   removeListener(ILabelProviderListener listener){}
        });
        return comp;
    }
    private void handleVerify(Event e){
        FieldDecoration deco;
        deco = decos[ step % decos.length ];
        if( deco ){
            textField.hideDecoration(deco);
        }
        step++;
        deco = decos[ step % decos.length ];
        if( deco ){
            textField.addFieldDecoration( deco, DWT.TOP | DWT.LEFT, false);
        }
    }
    protected void createButtonsForButtonBar(Composite parent) {
        createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true);
    }
}


void main(){
    auto d = new Display();
    (new MyDialog(null)).open();
}