com.talk2object.plum.view.web.component.input.WebRadioField Maven / Gradle / Ivy

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package com.talk2object.plum.view.web.component.input;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import javax.management.RuntimeErrorException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.jsoup.nodes.Element;

import com.talk2object.plum.input.value.image.Image;
import com.talk2object.plum.view._abstract.components.listbox.option.Options;
import com.talk2object.plum.view._abstract.components.listbox.option.ViewOption;
import com.talk2object.plum.view._abstract.components.listbox.option.converter.OptionConverter;
import com.talk2object.plum.view.component.Component;
import com.talk2object.plum.view.component.listbox.RadioField;
import com.talk2object.plum.view.event.AbstractViewAction;
import com.talk2object.plum.view.event.ViewAction;
import com.talk2object.plum.view.event.WebEvent;
import com.talk2object.plum.view.web.WebFileUtils;
import com.talk2object.plum.view.web.component.AbstractTemplateWebComponent;
import com.talk2object.plum.view.web.component.ComponentElements;

public class WebRadioField extends AbstractTemplateWebComponent {

	public static final String VALUE_CHANGE = "valueChange";
	public static final String IMAGE_NUMBER_SEPERATOR = "-";
	private final String INPUT = "input";

	private static Element componentHtmlTemplate;

	private Element inputElement;
	private Element itemOuterElement;

	private List options;

	private int selectedIndex = -1;

	public WebRadioField(String id, Component component,
			Element templateTemplate) {
		super(id, component, templateTemplate);

	}

	private RadioField getRadioBox() {
		return (RadioField) getComponent();
	}

	public void createHtmlElement() {
		// ===create local state
		RadioField radioBox = getRadioBox();

		createViewOptions(radioBox);

		selectedIndex = radioBox.getSelectedIndex();

		ComponentElements componentElements = findAndCloneElement(
				getComponentHtmlTemplate(true), false);

		htmlOuterElement = componentElements.getOuter();
		htmlInnerElement = componentElements.getInner();

		itemOuterElement = findElementByClass("item-outer");

		htmlInnerElement.empty();

		int i = 0;
		for (ViewOption option : options) {

			Element itemElement = itemOuterElement.clone();
			Element inputElement = findElementByClass(itemElement, "item-input");
			Element imageElement = findElementByClass(itemElement, "item-image");
			Element textElement = findElementByClass(itemElement, "item-text");

			inputElement.attr("name", getFullInputName(INPUT));

			inputElement.attr("value",
					getFullInputName(String.format("%s_%d", INPUT, i)));

			if (option.getImage() != null)
				imageElement.attr(
						"src",
						WebFileUtils.generateUrl(getId(), INPUT
								+ IMAGE_NUMBER_SEPERATOR + i));
			else
				imageElement.remove();

			if (option.getText() != null)
				textElement.text(option.getText());
			else
				textElement.remove();

			htmlInnerElement.appendChild(itemElement);

			i++;
		}

		// radio box will not contains other elements.
		htmlInnerElement = null;
	}

	private void createViewOptions(RadioField radioField) {
		options = new ArrayList();

		Options inputOptions = radioField.getOptions();
		OptionConverter optionConverter = inputOptions.getOptionConveter();

		// create options
		for (int i = 0; i < inputOptions.size(); i++) {

			Object obj = inputOptions.get(i);

			String value = optionConverter.toText(obj);
			String text = optionConverter.toText(obj);
			Image image = optionConverter.toImage(obj);

			ViewOption option = new ViewOption(value, text, image);

			options.add(option);
		}
	}

	@Override
	public void writeFile(HttpServletRequest req, HttpServletResponse response,
			String shortName) throws IOException {

		int index = Integer.valueOf(shortName.split(IMAGE_NUMBER_SEPERATOR)[1]);
		Image image = options.get(index).getImage();

		writeFile(req, response, image.getFile());
	}

	protected ViewAction onValueChange(final Object newValue) {

		return new AbstractViewAction(WebEvent.VALUE_SET.name()) {

			@Override
			public void execute(Component view) {
				// getRadioBox().setValue(newValue);
				RadioField radioBox = (RadioField) view;
				radioBox.setSelectedIndex(selectedIndex);
			}
		};
	}

	@Override
	public ViewAction processEvent(WebEvent event,
			Map parameters) {
		if (event == WebEvent.VALUE_SET) {
			Object newValue = (Object) parameters.get(INPUT);
			return onValueChange(newValue);

		} else
			throw new RuntimeException("unknow event:" + event);

	}

	@Override
	public Element getComponentHtmlTemplate() {

		return componentHtmlTemplate;
	}

	@Override
	public void setComponentHtmlTemplate(Element element) {
		componentHtmlTemplate = element;

	}

	@Override
	public String getComponentType() {

		return "radiobox";
	}
}