JavaFX/controller/RootLayout.java

package controller;

import java.awt.Color;
import java.io.IOException;
import java.util.ArrayList;

import Classes.Category;
import Classes.SortTypes;
import Classes.css.user.ContextBuilder;
import Classes.css.user.HeaderIconStyleSheet;
import Classes.css.user.HeaderStyleSheet;
import Classes.css.user.MenuStyleSheet;
import Classes.css.user.SubMenuStyleSheet;
import Interfaces.Event;
import Interfaces.EventObserver;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.event.EventHandler;
import javafx.fxml.FXMLLoader;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.TextField;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.Background;
import javafx.scene.layout.FlowPane;
import javafx.scene.layout.VBox;
import javafx.scene.text.Text;
import javafx.stage.Stage;

import model.DictionaryModel;

import model.NewsListModel;
import model.NewsModel;

public class RootLayout extends Application implements EventObserver {
	
	private Stage      root_stage;
	private Scene      root_scene;
	private AnchorPane root_layout;
	private FlowPane   main_container;
	private Article    articles;
	

	@Override
	public void start(Stage primary_stage) throws Exception {
		
		/* (1) store primary stage + title it */
		this.root_stage = primary_stage;
		this.root_stage.setTitle("Language learner pro plus 2000");
		
		/* (2) Load the root layout*/
		this.loadRootLayout();	
		
		/* (3) Load the CSS CONTEXT */
		ContextBuilder.createContext();
		
		/* (3) Store container */
		this.main_container = (FlowPane) this.root_scene.lookup("#container");
		
		
		
		/* (1) Create controllers' views
		-------------------------------------*/
		/* (1) Create header menu */
		HeaderMenu hm = new HeaderMenu((FlowPane) this.root_scene.lookup("#header_menu"),this);
		
		hm.addItem("notification", "/src/header-notif.png");
		hm.addItem("mail",         "/src/header-mail.png");
		hm.addItem("search",       "/src/header-search.png");
		hm.addItem("menu",         "/src/header-menu.png");
		
		
		/* (2) Create container */
		this.articles = new Article(this.main_container, this);
		
		
		/* (2) CSS
		-------------------------------------*/

		/* (1) #header */
		new HeaderStyleSheet( this.root_scene.lookup("#header") );
		
		/* (2) #menu_container */
		new MenuStyleSheet( this.root_scene.lookup("#menu") );
		
		/* (3) #submenu */
		new SubMenuStyleSheet( this.root_scene.lookup("#submenu") );
		
		/* (4) #header_icon*/
		new HeaderIconStyleSheet( this.root_scene.lookup("#header_icon") );
		
		

		NewsListModel.getInstance().addObserver("MainClass", this);
		NewsListModel.getInstance().setCategory(Category.all);
		NewsListModel.getInstance().setSortType(SortTypes.relevancy);
		this.handleMainLayoutChange("magazines");
		
	}
	
	public void loadRootLayout(){
	
		try{
			
			/* (1) Load the root_disp.fxml */
			FXMLLoader loader = new FXMLLoader();
			
			loader.setLocation(getClass().getResource("/fxml/model.fxml"));
			
			/* (2) Load the layout into the scene */
			this.root_layout = (AnchorPane) loader.load();
			this.root_scene  = new Scene(this.root_layout);
			
			/* (3) Add the scene to the stage */
			this.root_stage.setScene(this.root_scene);
			
			//bind events on click fot the menu
			VBox menuRoot = (VBox) this.root_layout.lookup("#menu");
			for (Node c : menuRoot.getChildren()) {
				c.setOnMousePressed(new EventHandler<MouseEvent>() {
					@Override
		            public void handle(MouseEvent event) {
						RootLayout.this.handleEvent(new Classes.Event(c.getId(), "changeMainLayout"));
		            }
				});
			}
			
			/* (4) Show the stage */
			this.root_stage.show();
			
		}catch(IOException e){
			e.printStackTrace();
		}
		
	}

	
	public static void main(String[] args) {
		launch(args);
	}

	@Override
	public void handleEvent(Event e) {
		
		switch(e.getEventType()){
		
			case "changeMainLayout":
				this.handleMainLayoutChange(e.getObjectId());
				break;
				
			case "NewsQuerySuccess":
				System.out.println(NewsListModel.getInstance().getNews().size()+" News ont été trouvé");
				if(NewsListModel.getInstance().getNews().size() != 0) {
				
					this.articles.clearContent();
				
					TextField tx = new TextField();
					tx.setPromptText("search...");
					tx.setId("mag_searchbar");
					tx.setOnKeyPressed(new EventHandler<KeyEvent>() {

						@Override
						public void handle(KeyEvent arg0) {
							if(arg0.getCode() == KeyCode.ENTER) {
								NewsListModel.getInstance().query(tx.textProperty().get());
							}
							
						}
						
					});
					
					Platform.runLater(new Runnable() {

						@Override
						public void run() {
							RootLayout.this.main_container.getChildren().add(tx);
							
						}
						
					});
					
					// For each news
					for( NewsModel news : NewsListModel.getInstance().getNews() ){
							
						try{
							
							this.articles.addItem( news );
						
						}catch(Exception e1){
							
							System.out.println("Cannot fetch article data");
							e1.printStackTrace();
							
						}
					}
				}
					
				break;
				
			case "NewsQueryFailed":
				System.out.println("une erreur est survenue");
				break;
			
			case "WordQuerySuccess":
				System.out.println(DictionaryModel.getInstance().getTranslations().size()+" Traductions ont été trouvés");
				System.out.println(DictionaryModel.getInstance().getUsages().size()+" Exemples ont été trouvés");
				break;
				
			case "changeMagCategory":
				NewsListModel.getInstance().setCategory(Category.valueOf(e.getObjectId().toLowerCase()));
				break;
		}
		
	}
	
	public void handleMainLayoutChange(String layout) {
		FlowPane container = (FlowPane) this.root_layout.lookup("#container");
		container.getChildren().clear();
		
		switch(layout) {
			case "dictionary" :
				DictionaryModel.getInstance().addObserver("MainClass", this);
				DictionaryModel.getInstance().query("maison");
				container.getChildren().add(new Text("dictionnaire"));
				break;
			case "exercises" :
				container.getChildren().add(new Text("exercises"));
				break;
			case "translator" :
				container.getChildren().add(new Text("translator"));
				break;
			case "magazines" :
				
				VBox subMenuContainer = (VBox) this.root_layout.lookup("#submenu");
				
				for(Node n : subMenuContainer.getChildren()) {
					FlowPane p = (FlowPane) n;
					p.setOnMousePressed(new EventHandler<MouseEvent>() {
						@Override
			            public void handle(MouseEvent event) {
							
							// De-active last gui category (TODO: make this line work)
							RootLayout.this.root_layout.lookup("#"+NewsListModel.getInstance().getCategory().getLabel()).getStyleClass().clear();
							
							// Change category
							NewsListModel.getInstance().setCategory(Category.valueOf(p.getChildren().get(0).getId().toLowerCase()));
							
							// Active gui category
							p.getStyleClass().add("active");
							
							// Re-launch request
							NewsListModel.getInstance().query(NewsListModel.getInstance().getQuery());
			            }
					});
				}
				
				break;
				
		}
		
	}
}