package org.zend.php.zendserver.deployment.ui.editors;

import java.util.List;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.forms.IMessageManager;
import org.eclipse.ui.forms.widgets.FormToolkit;
import org.zend.php.zendserver.deployment.core.descriptor.IModelContainer;
import org.zend.php.zendserver.deployment.core.internal.descriptor.Feature;

public class ListField extends TextField {
	
	public ListField(IModelContainer target, Feature key, String label, IMessageManager mmng) {
		super(target, key, label, mmng);
	}
	
	@Override
	protected void createTextControl(Composite parent, FormToolkit toolkit) {
		text = toolkit.createText(parent, "", SWT.MULTI|SWT.V_SCROLL|SWT.H_SCROLL|SWT.WRAP); //$NON-NLS-1$
		GridData gd = new GridData(SWT.FILL, SWT.TOP, true, true);
		gd.horizontalSpan = labelTxt != null ? 2 : 3;
		gd.heightHint = 100;
		text.setLayoutData(gd);
		text.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_WHITE));
	}

	protected void createActions() {
		text.addModifyListener(new ModifyListener() {
			public void modifyText(ModifyEvent e) {
				if (isRefresh) {
					return;
				}
				
				String text = ((Text)e.widget).getText();
				String[] items = text.trim().length() == 0 ? new String[0] : text.split("\n"); //$NON-NLS-1$
				if (target != null) {
					List<Object> list = ((IModelContainer)target).getChildren(key);
					for (int i = 0; i < Math.min(items.length, list.size()); i++) {
						list.set(i, items[i]);
					}
					for (int i = list.size(); i < items.length; i++) {
						list.add(items[i]);
					}
					for (int i = items.length; i < list.size(); i++) {
						list.remove(items.length);
					}
				}
			}
		});
	}
	
	public void refresh() {
		isRefresh = true;
		try {
			List<Object> value = target != null ? ((IModelContainer)target).getChildren(key) : null;
			StringBuilder sb = new StringBuilder();
			if (value != null) {
				for (Object o : value) {
					sb.append(o).append("\n"); //$NON-NLS-1$
				}
			}
			text.setText(sb.toString());
		} finally {
			isRefresh = false;
		}
	}
}