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package newsbrowser;

import javafx.event.ActionEvent;
import javafx.geometry.HPos;
import javafx.geometry.Pos;
import javafx.geometry.VPos;
import javafx.scene.Node;
import javafx.scene.control.ColorPicker;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Hyperlink;
import javafx.scene.control.ProgressBar;
import javafx.scene.control.TextField;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Region;
import javafx.scene.paint.Color;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;


/**
 *
 * @author ruhuayan
 */
class Browser extends Region {
    private final HBox searchBar;
    private final HBox pbBar;
    private final HBox bottomBar;
    private final WebView webview; 
    private final WebEngine webEngine;
    private final TextField urlTextField;
    private final Hyperlink next;
    private final Hyperlink previous;
    private final Hyperlink refresh;
    private final Hyperlink writeButton;
    private final Hyperlink saveAsButton;
    //private final HBox writeBox;
    private final Hyperlink hand;
    private final Hyperlink eraser;
    private final ProgressBar pb;
    private final double browserW =800,browserH=600;
    private String fontName;
    private int fontSize;
    private Color drawColor;
    private int drawStroke;
    
//    private String browserTitle;
 
    public Browser() {
        
        //apply the styles
        getStyleClass().add("browser");
        
        webview = new WebView();
        webEngine = webview.getEngine();
        
        searchBar = new HBox();
        searchBar.setAlignment(Pos.BOTTOM_LEFT);
        searchBar.getStyleClass().add("browser-searchBar");

        next = new Hyperlink("", new ImageView(new Image("icons/go-next.png")));
        previous = new Hyperlink("", new ImageView(new Image("icons/go-previous.png")));
        refresh = new Hyperlink("",new ImageView(new Image("icons/refresh.png")));
        urlTextField = new TextField();
        urlTextField.prefWidthProperty().bind(webview.prefWidthProperty().subtract(previous.getWidth()*3));
        searchBar.getChildren().addAll(previous,next,refresh,urlTextField);
        
        pb = new ProgressBar(0.2);
        pbBar = new HBox();
        pbBar.setAlignment(Pos.BOTTOM_LEFT);
        pb.prefWidthProperty().bind(webview.prefWidthProperty());
        //pbBar.getStyleClass().add("pbBar");
        pbBar.getChildren().add(pb);
        
        writeButton = new Hyperlink("Write",new ImageView(new Image("icons/write.png")));
        saveAsButton = new Hyperlink("Save As Image",new ImageView(new Image("icons/saveAs.png")));
       
 
        // create the bottombar
        bottomBar = new HBox();
        bottomBar.setAlignment(Pos.BOTTOM_LEFT);
        //writeBox = new HBox();
        fontName = "Calibri";
        fontSize = 12;
        drawColor = Color.BLACK;
        drawStroke = 5;
        eraser = new Hyperlink("",new ImageView(new Image("icons/eraser.png")));
        hand = new Hyperlink("", new ImageView(new Image("icons/Hand.png")));
        //createWriteBox();
        bottomBar.getStyleClass().add("browser-bottombar");
        bottomBar.getChildren().addAll(saveAsButton,writeButton);
        //bottomBar.getChildren().add(writeBox);
        //writeBox.setVisible(false);
        // load the home page        
        webEngine.load("http://www.google.com");
        //add components
        getChildren().add(searchBar);
        getChildren().add(webview);
        getChildren().add(bottomBar); 
        getChildren().add(pbBar);
        
    }
    public WebEngine getWebEngine(){
        return webEngine;
    }
    public ProgressBar getProgressBar(){
        return pb;
    }
    // JavaScript interface object
   public TextField getURLTextField(){
       return urlTextField;
   }
 
    public HBox createWriteBox(){
        HBox writeBox = new HBox();
        writeBox.getStyleClass().add("writeBox");
        
        ComboBox <String> fontComboBox = new ComboBox<>();
        fontComboBox.getItems().addAll("Arial Black","Calibri","Segoe Script","Verdana");
        fontComboBox.setValue("Calibri");
        fontComboBox.setOnAction((ActionEvent ae)->{
           
            setFontName(fontComboBox.getValue());  
        });
        fontComboBox.getStyleClass().add("combobox");
        ComboBox<String> fsComboBox = new ComboBox<>();
        fsComboBox.getItems().addAll("10","12","14","16","18","20");
        fsComboBox.setValue("12");
        fsComboBox.setOnAction((ActionEvent ae)->{
            
            setFontSize(Integer.parseInt(fsComboBox.getValue()));
        });
        fsComboBox.getStyleClass().add("combobox");
        ColorPicker colorPicker = new ColorPicker();
        colorPicker.setValue(Color.BLACK);
        colorPicker.setOnAction((ActionEvent ae)->{
   
             setDrawColor(colorPicker.getValue());
             
        });
        colorPicker.getStyleClass().add("combobox");
        ComboBox<String> strokeComboBox = new ComboBox<>();
        strokeComboBox.getItems().addAll("Stroke:","3","5","7","9","11");
        strokeComboBox.setOnAction((ActionEvent ae)->{
            if(!"Stroke".equals(strokeComboBox.getValue()))
                setDrawStroke(Integer.parseInt(strokeComboBox.getValue()));
        });
        strokeComboBox.setValue("5");
        strokeComboBox.getStyleClass().add("comboBox");

        writeBox.getChildren().addAll(fontComboBox,fsComboBox,colorPicker,strokeComboBox,eraser,hand);
        //HBox.setHgrow(writeBox, Priority.ALWAYS);
        bottomBar.getChildren().add(writeBox);
        return writeBox;
    }
 
    @Override
    protected void layoutChildren() {
        double w = getWidth();
        double h = getHeight();
        double tbHeight = bottomBar.prefHeight(w);
        double sbHeight = searchBar.prefHeight(w);
        layoutInArea(searchBar,0,0,w,sbHeight,0,HPos.CENTER,VPos.CENTER);
        layoutInArea(webview,0,sbHeight,w,h-sbHeight,0,HPos.CENTER, VPos.CENTER);
        layoutInArea(pbBar,0,sbHeight,w,3,0,HPos.CENTER,VPos.CENTER);
        layoutInArea(bottomBar,0,h-tbHeight,w,tbHeight,0,HPos.CENTER,VPos.CENTER);
    }
 
    @Override
    protected double computePrefWidth(double height) {
        return browserW;
    }
 
    @Override
    protected double computePrefHeight(double width) {
        return browserH;
    }
   
    public Hyperlink getSaveAsButton(){
        return saveAsButton;
    }
    public Hyperlink getRefreshButton(){
        return refresh;
    }
    public Hyperlink getNextButton(){
        return next;
    }
    public Hyperlink getPreviousButton(){
        return previous;
    }
    public Hyperlink getWriteButton(){
        return writeButton;
    }

    public void addNode(Node n,double xPos,double yPos, double w, double h){
        Browser.this.getChildren().add(n);
        Browser.this.layoutInArea(n, xPos, yPos, w, h, 0, HPos.LEFT, VPos.TOP);
    }
    public void removeNode(Node n){
        Browser.this.getChildren().remove(n);
    }
    public HBox getBottomBar(){
        return bottomBar;
    }
  
    public Hyperlink getHandButton(){
        return hand;
    }
    public Hyperlink getEraser(){
        return eraser;
    }
    public void setFontName(String fn){
        fontName = fn;
    }
    public String getFontName(){
        return fontName;
    }
    public void setFontSize(int fs){
        fontSize =fs;
    }
    public int getFontSize(){
        return fontSize;
    }
    public void setDrawColor(Color dc){
        drawColor = dc;
    }
    public Color getDrawColor(){
        return drawColor;
    }
    public void setDrawStroke(int ds){
        drawStroke = ds;
    }
    public int getDrawStrok(){
        return drawStroke;
    }
}