TemplateEditor.java

package fi.utu.ville.exercises.template;

import java.io.File;

import com.vaadin.shared.ui.label.ContentMode;
import com.vaadin.ui.Label;
import com.vaadin.ui.TextField;
import com.vaadin.ui.VerticalLayout;

import fi.utu.ville.exercises.model.Editor;
import fi.utu.ville.exercises.model.EditorHelper;
import fi.utu.ville.exercises.model.EditorHelper.EditedExerciseGiver;
import fi.utu.ville.exercises.model.VilleContent;
import fi.utu.ville.exercises.model.VilleUI;
import fi.utu.ville.standardutils.AFFile;
import fi.utu.ville.standardutils.AbstractFile;
import fi.utu.ville.standardutils.Localizer;
import fi.utu.ville.standardutils.SimpleFileUploader;
import fi.utu.ville.standardutils.SimpleFileUploader.UploaderListener;
import fi.utu.ville.standardutils.StandardIcon.IconVariant;
import fi.utu.ville.standardutils.StandardUIFactory;
import fi.utu.ville.standardutils.ui.AbstractEditorLayout;

public class TemplateEditor extends VilleContent implements
		Editor<TemplateExerciseData> {
		
	/**
	 * 
	 */
	private static final long serialVersionUID = -4600841604409240872L;
	
	public static final int MAX_FILE_SIZE_KB = 1024;
	public static final String IMAGE_MIME_FILTER = "^image/.*$";
	
	private EditorHelper<TemplateExerciseData> editorHelper;
	
	private TextField questionText;
	
	private AbstractFile currImgFile;
	
	private Localizer localizer;
	
	private AbstractEditorLayout layout;
	
	public TemplateEditor() {
		super(null);
	}
	
	@Override
	public VilleContent getView() {
		return this;
	}
	
	@Override
	public void initialize(VilleUI ui, Localizer localizer,
			TemplateExerciseData oldData,
			EditorHelper<TemplateExerciseData> editorHelper) {
			
		this.localizer = localizer;
		
		this.editorHelper = editorHelper;
		
		editorHelper.getTempManager().initialize();
		
		init(ui);
		
		doLayout(oldData);
	}
	
	private TemplateExerciseData getCurrentExercise() {
		return new TemplateExerciseData(questionText.getValue(), currImgFile);
	}
	
	private void doLayout(TemplateExerciseData oldData) {
		
		this.setMargin(false);
		setSpacing(false);
		this.setWidth("100%");
		
		layout = StandardUIFactory.getTwoColumnView();
		addComponent(layout);
		
		layout.addToTop(editorHelper
				.getControlbar(new EditedExerciseGiver<TemplateExerciseData>() {
					
					@Override
					public TemplateExerciseData getCurrExerData(
							boolean forSaving) {
						return getCurrentExercise();
					}
				}));
				
		layout.setTitle("Editor");
		layout.addToLeft(editorHelper.getInfoEditorView());
		
		String oldQuestion;
		if (oldData != null) {
			oldQuestion = oldData.getQuestion();
			currImgFile = oldData.getImgFile();
		} else {
			oldQuestion = "";
			currImgFile = null;
		}
		
		VerticalLayout editlayout = new VerticalLayout();
		
		Label questionTextCapt = new Label(
				localizer.getUIText(TemplateUiConstants.QUESTION_TEXT));
		questionTextCapt.addStyleName("template-exercise-title");
		
		questionText = new TextField(null, oldQuestion);
		
		SimpleFileUploader uploader = new SimpleFileUploader(localizer,
				editorHelper.getTempManager(), MAX_FILE_SIZE_KB,
				IMAGE_MIME_FILTER);
				
		uploader.registerUploaderListener(new UploaderListener() {
			
			/**
			 * 
			 */
			private static final long serialVersionUID = 8266397773350713952L;
			
			@Override
			public void fileUploadSucceeded(File tempFile, String fileName,
					String mimeType) {
				currImgFile = new AFFile(tempFile);
			}
			
			@Override
			public void uploadedFileDeleted(File tempFile) {
				currImgFile = null;
			}
			
		});
		
		if (currImgFile != null) {
			uploader.setAbstractUploadedFile(currImgFile);
		}
		
		editlayout.addComponent(questionTextCapt);
		editlayout.addComponent(questionText);
		editlayout.addComponent(
				new Label(TemplateFontIcons.UPLOAD.getIcon().variant(IconVariant.BLACK), ContentMode.HTML));
		editlayout.addComponent(uploader);
		
		layout.addToRight(editlayout);
		
	}
	
	@Override
	public void doLayout() {
	
	}
	
	@Override
	public boolean isOkToExit() {
		// TODO Auto-generated method stub
		return true;
	}
	
	@Override
	public String getViewName() {
		return "template-editor";
	}
}