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package es.inaer.taller.client;
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import java.util.ArrayList;

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import java.util.Arrays;

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import java.util.Date;

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import java.util.List;

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import com.google.gwt.cell.client.DateCell;

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import com.google.gwt.core.client.EntryPoint;

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import com.google.gwt.core.client.GWT;

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import com.google.gwt.editor.client.Editor;

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import com.google.gwt.editor.client.Editor.Path;

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import com.google.gwt.editor.client.EditorError;

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import com.google.gwt.editor.client.SimpleBeanEditorDriver;

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import com.google.gwt.i18n.client.DateTimeFormat;

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import com.google.gwt.i18n.client.DateTimeFormat.PredefinedFormat;

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import com.google.gwt.safehtml.shared.SafeHtml;

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import com.google.gwt.user.client.Window;

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import com.google.gwt.user.client.Window.ClosingEvent;

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import com.google.gwt.user.client.Window.ClosingHandler;

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

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

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

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import com.google.web.bindery.autobean.shared.AutoBean;

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import com.google.web.bindery.autobean.shared.AutoBeanFactory;

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import com.sencha.gxt.core.client.ValueProvider;

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import com.sencha.gxt.core.client.XTemplates;

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import com.sencha.gxt.core.client.util.Margins;

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import com.sencha.gxt.data.client.editor.ListStoreEditor;

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import com.sencha.gxt.data.shared.LabelProvider;

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import com.sencha.gxt.data.shared.ListStore;

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import com.sencha.gxt.data.shared.ModelKeyProvider;

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import com.sencha.gxt.data.shared.PropertyAccess;

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import com.sencha.gxt.widget.core.client.ContentPanel;

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import com.sencha.gxt.widget.core.client.FramedPanel;

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import com.sencha.gxt.widget.core.client.box.MessageBox;

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import com.sencha.gxt.widget.core.client.button.TextButton;

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import com.sencha.gxt.widget.core.client.container.FlowLayoutContainer;

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import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer;

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import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer.VerticalLayoutData;

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import com.sencha.gxt.widget.core.client.event.SelectEvent;

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import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;

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import com.sencha.gxt.widget.core.client.form.ComboBox;

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import com.sencha.gxt.widget.core.client.form.DateField;

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import com.sencha.gxt.widget.core.client.form.DateTimePropertyEditor;

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import com.sencha.gxt.widget.core.client.form.FieldLabel;

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import com.sencha.gxt.widget.core.client.form.TextField;

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import com.sencha.gxt.widget.core.client.form.validator.AbstractValidator;

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import com.sencha.gxt.widget.core.client.grid.ColumnConfig;

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import com.sencha.gxt.widget.core.client.grid.ColumnModel;

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import com.sencha.gxt.widget.core.client.grid.Grid;

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import com.sencha.gxt.widget.core.client.grid.editing.ClicksToEdit;

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import com.sencha.gxt.widget.core.client.grid.editing.GridInlineEditing;

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import com.sencha.gxt.widget.core.client.toolbar.ToolBar;

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// Proof of concept using some new feature of GWT2.4 + GXT3.0RC 

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public class Taller implements EntryPoint {

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	public interface Person {

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		int getId();

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		void setId(int value);

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		String getName();

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		void setName(String value);

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		Date getBirthDate();

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		void setBirthDate(Date value);

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		Person getBoss();

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		void setBoss(Person value);

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		List<Person> getCollegues();

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		void setCollegues(List<Person> value);

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	}

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	interface BeanFactory extends AutoBeanFactory {

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		BeanFactory INSTANCE = GWT.create(BeanFactory.class);

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		AutoBean<Person> person();

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	}

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	public interface PersonPropertyAccess extends PropertyAccess<Person> {

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		PersonPropertyAccess INSTANCE = GWT.create(PersonPropertyAccess.class);

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		@Path("name")

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		LabelProvider<Person> label(); 

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		@Path("id")

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		ModelKeyProvider<Person> key();

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		ValueProvider<Person, String> name();

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		ValueProvider<Person, Date> birthDate();

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		// exception throw if boss is null :-/

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		//@Path("boss.name")

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		//ValueProvider<Person, String> bossName();

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	}

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	/***

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	 * Field that shows a grid with all person instances in the Store 

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	 * and allows to add, remove or edit some person properties.

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	 */

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	public class PersonListField extends ContentPanel {

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		// new Person objects added on editing time will have negative id numbers

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		int fakePersonId = -1;

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		public PersonListField(final ListStore<Person> personStore) {

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			VerticalLayoutContainer vlc = new VerticalLayoutContainer();

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			ToolBar toolbar = new ToolBar();

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			TextButton addButton = new TextButton("Add");

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			toolbar.add(addButton);

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			TextButton deleteButton = new TextButton("Delete");

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			toolbar.add(deleteButton);

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			vlc.add(toolbar, new VerticalLayoutData(1, -1));

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			ArrayList<ColumnConfig<Person, ?>> colConfigs = new ArrayList<ColumnConfig<Person, ?>>();

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			ColumnConfig<Person, String> nameCol = new ColumnConfig<Person, String>(PersonPropertyAccess.INSTANCE.name(), 100, "Name");

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			ColumnConfig<Person, Date> birthDateCol = new ColumnConfig<Person, Date>(PersonPropertyAccess.INSTANCE.birthDate(), 100, "Birthdate");

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			birthDateCol.setCell(new DateCell(DateTimeFormat.getFormat(PredefinedFormat.DATE_SHORT)));

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			colConfigs.add(nameCol);

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			colConfigs.add(birthDateCol);

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			ColumnModel<Person> columModel = new ColumnModel<Person>(colConfigs);

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			final Grid<Person> grid = new Grid<Person>(personStore, columModel);

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			grid.getView().setForceFit(true);

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			GridInlineEditing<Person> inlineEditor = new GridInlineEditing<Person>(grid);

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			inlineEditor.setClicksToEdit(ClicksToEdit.TWO);

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			TextField nameTextField = new TextField();

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			inlineEditor.addEditor(nameCol, nameTextField);

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			inlineEditor.addEditor(birthDateCol, new DateField(new DateTimePropertyEditor(

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			        DateTimeFormat.getFormat(PredefinedFormat.DATE_SHORT))));

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			vlc.add(grid, new VerticalLayoutData(1, 1));

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			add(vlc);

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			addButton.addSelectHandler(new SelectHandler() {

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				@Override

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				public void onSelect(SelectEvent event) {

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					Person p = createPerson(fakePersonId--, "New Name", null , null);

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					personStore.add(p);

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				}

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			});

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			deleteButton.addSelectHandler(new SelectHandler() {

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				@Override

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				public void onSelect(SelectEvent event) {

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					List<Person> selectedItems = grid.getSelectionModel().getSelectedItems();

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					for (Person person: selectedItems) {

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						personStore.remove(person);

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					}

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				}

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			});

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		}

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	}

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	public class PersonEditor implements IsWidget, Editor<Person> {

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		FramedPanel fp;

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		FlowLayoutContainer panel;

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		TextField name = new TextField();

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		DateField birthDate = new DateField();

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		ListStore<Person> bossStore = new ListStore<Person>(PersonPropertyAccess.INSTANCE.key());

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		ComboBox<Person> boss = new ComboBox<Person>(bossStore, PersonPropertyAccess.INSTANCE.label());

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		ListStore<Person> collegueStore = new ListStore<Person>(PersonPropertyAccess.INSTANCE.key());

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		ListStoreEditor<Person> collegues = new ListStoreEditor<Person>(collegueStore);

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		public PersonEditor(List<Person> bossList) {

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			fp = new FramedPanel();

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			fp.setHeadingText("Person");

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			panel = new FlowLayoutContainer();

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			name.setAllowBlank(false);

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			name.addValidator(new StartWithEValidator());

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			panel.add(new FieldLabel(name, "Name"));

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			panel.add(new FieldLabel(birthDate, "Birth date"));

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			panel.add(new FieldLabel(boss, "Boss"));

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			boss.setForceSelection(true);

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			bossStore.addAll(bossList);

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			PersonListField colleguesField = new PersonListField(collegueStore);

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			colleguesField.setHeadingText("Collegues");

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			colleguesField.setHeight(300);

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			panel.add(colleguesField);

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			fp.add(panel);

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		}

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		@Override

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		public Widget asWidget() {

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			return fp;

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		}

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	}

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	public interface PersonDriver extends SimpleBeanEditorDriver<Person, PersonEditor> {}

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	public interface PersonTemplate extends XTemplates {

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		PersonTemplate INSTANCE = GWT.create(PersonTemplate.class);

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		@XTemplate(source = "template.html")

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		@XTemplate("<p>Name: <b>{name}</b></p><tpl if=\"birthDate != null\"><p>Date of birth: <b>{birthDate:date(\"d/M/yy\")}</b></p></tpl><tpl if=\"boss != null\"><p>Boss's name: <b>{boss.name}</b></p></tpl><p>Collegues:</p><tpl for=\"collegues\">{#}. {name}<br></tpl>")

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		public SafeHtml render(Person person);

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	}

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	class StartWithEValidator extends

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			AbstractValidator<String> {

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		@Override

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		public List<EditorError> validate(Editor<String> editor,

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				String value) {

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			if (value.charAt(0) != 'E') {

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				return createError(editor, "Must start with letter E", value);

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			}

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			return null;

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		}

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	}

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	Person createPerson(int id, String name, Date birthDate, Person boss) {

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		Person p = BeanFactory.INSTANCE.person().as();

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		p.setId(id);

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		p.setName(name);

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		p.setBirthDate(birthDate);

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		p.setBoss(boss);

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		return p;

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	}

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	public void onModuleLoad() {

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		// setup data model

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		Person romain = createPerson(3, "Romain", null, null);

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		Person andres = createPerson(2, "Andres", null, romain);

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		final Person edu = createPerson(1, "Edu", null, andres);

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		Person juan = createPerson(4, "Juan", null, andres);

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		Person paco = createPerson(5, "Paco", null, andres);

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		edu.setCollegues(new ArrayList<Person>(Arrays.asList(andres, paco, juan)));

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		ArrayList<Person> bossList = new ArrayList<Person>();

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		bossList.add(andres);

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		bossList.add(romain);

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		VerticalLayoutContainer panel = new VerticalLayoutContainer();

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		PersonEditor personEditor = new PersonEditor(bossList);

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		panel.add(personEditor, new VerticalLayoutData(1, 0.9f, new Margins(2)));

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		TextButton saveButton = new TextButton("Save");

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		panel.add(saveButton, new VerticalLayoutData(-1, 0.05f, new Margins(2)));

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		TextButton isDirtyButton = new TextButton("is dirty?");

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		panel.add(isDirtyButton, new VerticalLayoutData(-1, 0.05f, new Margins(2)));

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		panel.setHeight(500);

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		panel.setWidth(300);

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		RootPanel.get().add(panel);

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		final PersonDriver personDriver = GWT.create(PersonDriver.class);

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		personDriver.initialize(personEditor);

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		personDriver.edit(edu);

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		saveButton.addSelectHandler(new SelectHandler() {

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			@Override

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			public void onSelect(SelectEvent event) {

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				// in this point we should evaluate if the list editor needs

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				// to check if all columns has data by example because this is not

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				// check by the Editor framework workflow.

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				personDriver.flush();

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				if (!personDriver.hasErrors()){

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					MessageBox mb = new MessageBox("View of edited Person", PersonTemplate.INSTANCE.render(edu).asString());

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					mb.show();

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				} else {

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				}

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			}

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		});

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		isDirtyButton.addSelectHandler(new SelectHandler() {

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			@Override

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			public void onSelect(SelectEvent event) {

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				Window.alert("isDirty = " + personDriver.isDirty());

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			}

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		});

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		Window.addWindowClosingHandler(new ClosingHandler() {

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	            public void onWindowClosing(ClosingEvent event) {

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	            	if (personDriver.isDirty()) {

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	            		event.setMessage("There are unsaved editor changes.");

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	            	}

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	            }

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	    });

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	}

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}
        

    


            


                                


        

            



                
    

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