Notes/src/Java/TXTs/Java Cheatsheet of Useful Commands and Structures.txt

import javafx.fxml.FXML;  // fxml stuff
import javafx.scene.control.Button;  // a button
import javafx.scene.control.ToggleButton;  // a toggl button
import javafx.scene.layout.AnchorPane;  // an anchor pane
import javafx.scene.layout.VBox;    // a virticle box; ie stacking ontop
import javafx.scene.layout.HBox;    // a horizontal box; ie stacking side-to-side
import javafx.scene.image.Image;    // path to an image
import javafx.scene.image.ImageView;  //  image window port/view area
import javafx.scene.control.Label;    // a label area for text
import javafx.scene.control.Tooltip;  // tooltips
import javafx.event.ActionEvent;     // for event handling
import java.io.File;                // dealing with files and dirs
import javafx.scene.input.KeyEvent;  // just determins if a key is pressed
import javafx.scene.input.KeyCode;  // Get keys entered
import javafx.scene.input.MouseEvent;  // mouse clicks
import javafx.scene.control.TextField;    // Input field
import javafx.event.ActionEvent;          // fxml event setOnAction
import javafx.scene.Scene;             //  the area of the play.  ;p
import javafx.scene.layout.Pane;        // like anchor pane but less cool
import javafx.stage.Stage;              //  stage windows
import javafx.stage.StageStyle;        // assigning a style of css parts
import javafx.scene.control.TextArea;  // large ammounts of text
import javafx.scene.control.TreeView;  // tree view area
import javafx.scene.control.TreeItem;  // a branch of a tree... kinda....
import javafx.beans.property.StringProperty;  // String stuff
import javafx.beans.property.SimpleStringProperty;  // String stuff
import javafx.scene.layout.TilePane;   // Like gridview but easyer
import javafx.concurrent.Task;        // A thread seperate from javafx's main thread
import javafx.application.Platform;    // Usually IN a task thread but lazy loads stuff
import java.lang.Runtime;          // A process runner
import javafx.stage.FileChooser;  // a file chooser window
import javafx.stage.DirectoryChooser; // a folder chooser window
import javafx.scene.input.MouseEvent;  // mouse click detection
import javafx.event.EventHandler;    // Event handling
import javafx.scene.Cursor;         // courser stuff
import java.util.concurrent.atomic.AtomicLong;  // gui update timing
import javafx.application.Platform;  // part of application
import javafx.scene.input.Clipboard;  // clipboard mngmnt
import javafx.scene.input.ClipboardContent;  // handles clipboard stuff
import javafx.scene.control.TablePosition;  // handle table positioning stuff



iconList.length  // iconList is an array. this gives its size
System.getProperty("user.home")    // Get user Home dir   NOTE: There is NO trailing / or \
desktopDir.listFiles();  // desktopDir is a File path and listFiles lists the dir contents if any.



NOTE:  private not always needed


// draging an item  // icon is a vbox element here. Can use other stuff
        icon.addEventFilter(MouseEvent.MOUSE_PRESSED,
            new EventHandler<MouseEvent>() {
            @Override public void handle(MouseEvent click) {
                if (click.getClickCount() == 2) {
                    click.consume();
                    try {
                        pb = Runtime.getRuntime().exec("xdg-open " + path);
                    } catch(Throwable imgIOErr) {
                        System.out.println(imgIOErr);
                    }
                } else {
                    orgSceneX = click.getSceneX();
                    orgSceneY = click.getSceneY();
                    orgTranslateX = desktopArea.getLeftAnchor(icon);
                    orgTranslateY = desktopArea.getTopAnchor(icon);
                }
            }
        });

        icon.addEventFilter(MouseEvent.MOUSE_DRAGGED,
            new EventHandler<MouseEvent>() {
            @Override public void handle(MouseEvent clck) {
                double offsetX = clck.getSceneX() - orgSceneX;
                double offsetY = clck.getSceneY() - orgSceneY;
                double newTranslateX = orgTranslateX + offsetX;
                double newTranslateY = orgTranslateY + offsetY;
                desktopArea.setLeftAnchor(icon, newTranslateX);
                desktopArea.setTopAnchor(icon, newTranslateY);
            }
        });



// mouse event
    pane.addEventHandler(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() {
         @Override
         public void handle(MouseEvent event) {
             event.consume();
                try {
                    pb = Runtime.getRuntime().exec("xdg-open " + path);
                } catch(Throwable imgIOErr) {
                    System.out.println(imgIOErr);
                }
         }
    });



// Run a system command
    private Process pb;    // Process runner
    try {
        pb = Runtime.getRuntime().exec(movieImg);
        pb.waitFor();
    } catch(Throwable imgIOErr) {
        System.out.println(imgIOErr);
    }



// Directory chooser
import javafx.stage.DirectoryChooser;


// Key event
    @FXML void onEnter(KeyEvent event) {  // if tied to an fxml file and the controller is called
        if (event.getCode().equals(KeyCode.ENTER)) {  // checks what has been entered then does something.
        }


// Task, a seperate thread
        Task getDir = new Task<Void>() {        // getdir is just tags name/caller
            @Override public Void call() {
                //  enter wahat is to be run
            return null;
            }};
        new Thread(getDir).start();

//  Platform lazy loads stuff to javafx thread from a seperate THREAD!!
// Need to be from a Task thread
     Platform.runLater(new Runnable() {
         @Override public void run() {
             view.setImage(pth);
         }
     });



//  Ge images in java
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
    private ImageView imgView;


    imgView.setImage(img);      // img is likely an Image img = new Image();
    imgView.setFitWidth(100);   // Set width
    imgView.setFitHeight(100);  // Set Height


//  Set tooltips
import javafx.scene.control.Tooltip;
    private Tooltip tooltip;

    tooltip = new Tooltip("What to display on hover");
    tooltip.minHeight(800);
    tooltip.minWidth(800);
    Tooltip.install(icon, tooltip);    // icon is the thing we are setting this to.
                                       // icon could be a Label, Image, Button, etc.
                                       // tooltip is the displayed message/tooltip


// anchor pane properties
import javafx.scene.layout.AnchorPane;
                            // icon is the thing being setup. IE, button, label, etc
   anchorPane.setLeftAnchor(icon, 100.0);  // Must be a double!!
   anchorPane.setRightAnchor(icon, 100.0);
   anchorPane.setTopAnchor(icon, 100.0);


// Tree view awesomeness!!!
// This is more a class file but can be converted to non class bits.
    private TreeItem<String> trunk = new TreeItem<String> ("UMSL HR Site Scan");
    private TreeItem<String> branch = new TreeItem<> ("------------------------");
    private TreeItem<String> leaf = new TreeItem<String> ();
    private TreeView<String> treeOutput = new TreeView<String> (trunk);

    public void setExpandSetting() {
        trunk.setExpanded(true);
    }

    public void newBranch(String in) {
        trunk.getChildren().add(branch);
        branch = new TreeItem<String> (in);
    }

    public void addLeaf(String in) {
        leaf = new TreeItem<String> (in);
        branch.getChildren().add(leaf);
    }

    public TreeView getOutputArea() { return treeOutput; }