com.talk2object.plum.view._abstract.components.grid.EntityGrid Maven / Gradle / Ivy

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package com.talk2object.plum.view._abstract.components.grid;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.beanutils.PropertyUtils;

import com.talk2object.plum.interaction.Form;
import com.talk2object.plum.interaction.InteractionManager;
import com.talk2object.plum.interaction.annotation.parameter.helper.ParameterWrapperFactory;
import com.talk2object.plum.interaction.context.InteractionContextUtils;
import com.talk2object.plum.interaction.rich.field.InteractiveField;
import com.talk2object.plum.interaction.rich.field.ValueType;
import com.talk2object.plum.model.entity.Entity;
import com.talk2object.plum.model.entity.EntityCollection;
import com.talk2object.plum.model.entity.Field;
import com.talk2object.plum.repository.biz.interafce.Collection;
import com.talk2object.plum.repository.biz.interafce.Identifiable;
import com.talk2object.plum.view.Visitor;
import com.talk2object.plum.view._abstract.components.PageChangedListener;
import com.talk2object.plum.view._abstract.components.PagingationPanel;
import com.talk2object.plum.view._abstract.components.Pagingnation;
import com.talk2object.plum.view.component.Button;
import com.talk2object.plum.view.component.CheckBox;
import com.talk2object.plum.view.component.ClickEventListener;
import com.talk2object.plum.view.component.Component;
import com.talk2object.plum.view.component.Label;
import com.talk2object.plum.view.component.containers.layout.Grid;
import com.talk2object.plum.view.component.containers.layout.HorizontalBox;
import com.talk2object.plum.view.component.containers.layout.VerticalBox;
import com.talk2object.plum.view.component.containers.window.ModalResult;
import com.talk2object.plum.view.event.ValueChangeListener;

/**
 * it is a view component for one type of entity. the repository provides
 * interface of CRUD.
 * 
 * @author jack
 * 
 */
public class EntityGrid extends VerticalBox {

	private Pagingnation pagingation;

	private Grid layout;
	private HorizontalBox actionPanel;
	private PagingationPanel pagingnationPanel;

	Map checkBoxMap = new HashMap();

	// model
	Entity entityMeta;
	Collection collection;

	public void setEntityCollectionModel(EntityCollection model) {
		setModel(model);
	}

	@Override
	public void updateView() {
		super.updateView();

		EntityCollection model = (EntityCollection) getModel();

		entityMeta = model.getMeta();
		collection = model.getCollection();

		int cols = entityMeta.getFieldSize();
		long rows = collection.size();

		// extra col is for operations
		layout = new Grid(cols + 1);
		layout.setHeaderEnabled(true);
		addChild(layout);

		actionPanel = new HorizontalBox();
		addChild(actionPanel);

		pagingation = new Pagingnation(10, collection.size());
		createActionPanel();

		refreshGrid();
	}

	private void createActionPanel() {
		// create action panel
		final CheckBox checkAll = new CheckBox();
		checkAll.setCaption("Check All");
		checkAll.addEventListener(EVENT_VALUE_CHANGE,
				new ValueChangeListener() {

					@Override
					public void onValueChange(Boolean oldValue, Boolean newValue) {
						// check all

						for (CheckBox cb : checkBoxMap.keySet()) {
							cb.setChecked(newValue);
						}

					}
				});
		actionPanel.addChild(checkAll);

		Button deleteSelectedEntitiesButton = new Button();
		deleteSelectedEntitiesButton.setCaption("Delete");
		deleteSelectedEntitiesButton.addClickListener(new ClickEventListener() {
			@Override
			public void onClick(Component source) {

				int changedCount = 0;
				// delete selected items
				for (CheckBox cb : checkBoxMap.keySet()) {
					if (cb.isChecked()) {
						T entity = checkBoxMap.get(cb);
						collection.remove(entity);

						changedCount++;
					}
				}

				checkAll.setChecked(false);

				if (changedCount > 0)
					refreshGrid();
			}
		});
		actionPanel.addChild(deleteSelectedEntitiesButton);

		Button createButton = new Button();
		createButton.setCaption("Create");
		createButton.addClickListener(new ClickEventListener() {
			@Override
			public void onClick(Component source) {

				InteractionManager manager = InteractionContextUtils
						.getInteractionManager();
				try {
					T entity = entityMeta.createNewInstance();

					List inputs = createInputs(entity);
					Form form = manager.scan(entityMeta.getName(), inputs);
					if (ModalResult.OK == form.getModalResult()) {
						updateEntity(inputs, entity);

						collection.add(entity);
						refreshGrid();
					}

				} catch (Exception e) {
					throw new RuntimeException(e);
				}
			}
		});
		actionPanel.addChild(createButton);

		createPagination();
		actionPanel.addChild(pagingnationPanel);

	}

	/**
	 * First | Prev | page no here.... | Next | Last
	 */
	private void createPagination() {
		pagingnationPanel = new PagingationPanel(pagingation);

		pagingnationPanel
				.addPageChangedEventListener(new PageChangedListener() {
					@Override
					public void onPageChanged(int page) {
						refreshGrid();
					}
				});
	}

	public void refreshGrid() {
		removeChild(layout);
		checkBoxMap.clear();

		int cols = entityMeta.getFieldSize();
		// int rows = collection.size();

		Label label;

		// extra col is for operations
		layout = new Grid(cols + 1);
		layout.setHeaderEnabled(true);
		addChild(layout);

		List entities = collection.getByPage(
				(int) pagingation.getPageSize(),
				(int) pagingation.getCurrentPage());

		// head
		label = new Label();
		label.setText("Action");
		layout.addChild(label);

		for (Field field : entityMeta.getFields()) {
			label = new Label();
			label.setText(field.getName());
			layout.addChild(label);
		}

		for (int r = 0; r < entities.size(); r++) {
			final T entity = entities.get(r);

			createActionColumn(entity);

			for (int c = 0; c < cols; c++) {
				Field fieldMeta = entityMeta.getField(c);

				Object fieldValue;
				try {
					fieldValue = PropertyUtils.getProperty(entity,
							fieldMeta.getName());
				} catch (Exception e) {
					throw new RuntimeException(e);
				}

				label = new Label();
				label.setText(obj2String(fieldValue));
				layout.addChild(label);

			}

		}
	}

	private String obj2String(Object obj) {
		if (obj == null)
			return "";
		else
			return obj.toString();

	}

	private void createActionColumn(final T entity) {
		HorizontalBox actionBox = new HorizontalBox();
		layout.addChild(actionBox);

		CheckBox checkBox = new CheckBox();
		checkBox.setCaption("");
		actionBox.addChild(checkBox);

		// add to map for later query
		checkBoxMap.put(checkBox, entity);

		// col of operation
		Button deleteBtn = new Button();
		deleteBtn.setCaption("Delete");
		deleteBtn.addClickListener(new ClickEventListener() {
			@Override
			public void onClick(Component source) {

				InteractionManager manager = InteractionContextUtils
						.getInteractionManager();

				if (manager.confirm("Are you sure to delete it?") == ModalResult.YES) {
					collection.remove(entity);
					refreshGrid();
				}
			}
		});
		actionBox.addChild(deleteBtn);

		Button updateBtn = new Button();
		updateBtn.setCaption("Update");
		updateBtn.addClickListener(new ClickEventListener() {

			@Override
			public void onClick(Component source) {
				InteractionManager manager = InteractionContextUtils
						.getInteractionManager();

				List inputs = createInputs(entity);
				Form form = manager.scan(entityMeta.getName(), inputs);
				if (ModalResult.OK == form.getModalResult()) {
					updateEntity(inputs, entity);

					collection.update(entity);
					refreshGrid();
				}
			}
		});
		actionBox.addChild(updateBtn);
	}

	private List createInputs(Identifiable entity) {
		List inputs = new ArrayList();

		for (Field metaField : entityMeta.getFields()) {
			Class fieldClass = metaField.getType();

			ValueType type = ValueType.valueOf(fieldClass);

			String name = metaField.getName();
			InteractiveField input = type.createRichField(name, fieldClass,
					null);

			ParameterWrapperFactory.getInstance().processAnnotations(input,
					metaField.getReflectionField().getAnnotations());

			try {
				Object value = PropertyUtils.getProperty(entity, name);
				input.setInitValue(value);
			} catch (Exception e) {
				throw new RuntimeException(e);
			}
			inputs.add(input);
		}

		return inputs;
	}

	private void updateEntity(List inputs, Identifiable entity) {
		for (InteractiveField input : inputs) {
			try {
				PropertyUtils.setProperty(entity, input.getName(),
						input.getValue());
			} catch (Exception e) {
				throw new RuntimeException(e);
			}
		}
	}

	public Pagingnation getPagingation() {
		return pagingation;
	}

	@Override
	public Object accept(Visitor visitor) {
		return visitor.visit(this);

	}

}