dragdropwordjumbles.java

用java 实现的IE browser适合于学者

package com.hnjchina.example.tableviewer;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.PopupList;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.dnd.DND;
import org.eclipse.swt.dnd.DragSource;
import org.eclipse.swt.dnd.DragSourceEvent;
import org.eclipse.swt.dnd.DragSourceListener;
import org.eclipse.swt.dnd.DropTarget;
import org.eclipse.swt.dnd.DropTargetEvent;
import org.eclipse.swt.dnd.DropTargetListener;
import org.eclipse.swt.dnd.TextTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.part.ViewPart;

public class DragDropWordJumbles extends ViewPart{
    String word="ECLIPSE";
    String[] OPTIONS = { "Apple", "Banana", "Cherry","Doughnut", "Eggplant", "Filbert", "Greens", "Hummus", "Ice Cream", "Jam"};
    Label[] labelsRowOne;
    Label[] labelsRowTwo;
    Font font=null;
    Composite	com;
    /* (non-Javadoc)
     * @see org.eclipse.ui.part.WorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite)
     */
    public void createPartControl(Composite parent) {
        com=parent;
//        WordJumbles(parent,word);
//        PopupList(parent);
//        UserPassWord(parent);
        CreateSnippets(parent);
    }
    
    public void setFocus() {        
    }
    public void setDragSource(final Label label) {
        //  Allows text to be moved only.
        int operations = DND.DROP_MOVE;
        final DragSource dragSource = new DragSource(label, operations);

        // Data should be transfered in plain text format.
        Transfer[] formats = new Transfer[] { TextTransfer.getInstance()};
        dragSource.setTransfer(formats);
        dragSource.addDragListener(new DragSourceListener() {
          public void dragStart(DragSourceEvent event) {
            // Disallows drags if text is not available.
            if (label.getText().length() == 0)
              event.doit = false;
          }

          public void dragSetData(DragSourceEvent event) {
            // Provides the text data.
            if (TextTransfer.getInstance().isSupportedType(event.dataType))
              event.data = label.getText();
          }

          public void dragFinished(DragSourceEvent event) {
            // Removes the text after the move operation.
            if (event.doit == true || event.detail == DND.DROP_MOVE) {
              label.setText("");
            }
          }
        });
        label.addDisposeListener(new DisposeListener() {
          public void widgetDisposed(DisposeEvent e) {
            dragSource.dispose();
          }
        });
      }
    public void setDropTarget(final Label label) {
        int operations = DND.DROP_MOVE;
        final DropTarget dropTarget = new DropTarget(label, operations);

        // Data should be transfered in plain text format.
        Transfer[] formats = new Transfer[] { TextTransfer.getInstance()};
        dropTarget.setTransfer(formats);

        dropTarget.addDropListener(new DropTargetListener() {
          public void dragEnter(DropTargetEvent event) {
            // Does not accept any drop if the label has text on it.
            if(label.getText().length() != 0)
              event.detail = DND.DROP_NONE;
          }

          public void dragLeave(DropTargetEvent event) {
          }

          public void dragOperationChanged(DropTargetEvent event) {
          }

          public void dragOver(DropTargetEvent event) {
          }

          public void drop(DropTargetEvent event) {
            if (TextTransfer
              .getInstance()
              .isSupportedType(event.currentDataType)) {
              String text = (String) event.data;
              label.setText(text);
              check();
            }
          }

          public void dropAccept(DropTargetEvent event) {
          }
        });
        label.addDisposeListener(new DisposeListener() {
          public void widgetDisposed(DisposeEvent e) {
            dropTarget.dispose();
          }
        });
      }
    private void check() {
        for(int i=0; i<word.length(); i++) {
          if(! labelsRowTwo[i].getText().equals(word.charAt(i) + ""))
            return;
        }
        MessageBox messageBox = new MessageBox(com.getShell());
        messageBox.setMessage("Success!");
        messageBox.open();
      }
    public void WordJumbles(Composite parent,String word) {
		GridLayout gridLayout = new GridLayout ();
		gridLayout.numColumns = word.length();
		gridLayout.makeColumnsEqualWidth = true;
		parent.setLayout (gridLayout);
		
        this.word = word;
        labelsRowOne = new Label[word.length()];
        labelsRowTwo = new Label[word.length()];

        int width = 40;

        int[] randomPermutation = { 5, 2, 6, 3, 1, 4, 0 };

        for (int i = 0; i < word.length(); i++) {
          final Label labelRowOne = new Label(parent, SWT.BORDER);
          labelsRowOne[i] = labelRowOne;
          labelRowOne.setBounds(10 + width * i,10 + width,width - 5,width - 5);
          labelRowOne.setFont(font);
          labelRowOne.setText(word.charAt(randomPermutation[i]) + "");
          labelRowOne.setAlignment(SWT.CENTER);
          setDragSource(labelRowOne);
          //setDropTarget(labelRowOne);
        }
        for	(int i=0;i<word.length();i++){
          final Label labelRowTwo = new Label(parent, SWT.BORDER);
          labelsRowTwo[i] = labelRowTwo; 
          labelRowTwo.setBounds(10 + width * i,20 + width,width - 5,width - 5);
          labelRowTwo.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_WHITE));
          labelRowTwo.setFont(font);
          labelRowTwo.setAlignment(SWT.CENTER);
          setDragSource(labelRowTwo);
        }
      }
    public	void	PopupList(final Composite parent){
        final Button button = new Button(parent, SWT.PUSH);
        final Rectangle rect;
        button.setText("Push Me");
        button.addSelectionListener(new SelectionAdapter() {
          public void widgetSelected(SelectionEvent event) {
            // Create a list
            PopupList list = new PopupList(parent.getShell(),SWT.LEFT_TO_RIGHT);
            // Add the items to the list
            list.setItems(OPTIONS);
            // Open the list and get the selected item
//            String selected = list.open(parent.getBounds());
            Point	point,pointsize;
            point=button.getLocation();
            pointsize=button.getSize();
            point.x=point.x+100;
            point.y=point.y+50;
            Rectangle	rect=new Rectangle(point.x,point.y,200,350);
            String selected = list.open(rect);
            // Print the item to the console
            System.out.println("x:"+point.x+"Y:"+point.y+"W:"+pointsize.x+"H:"+pointsize.y);
            System.out.println(selected);
          }
        });
    }
    public	void	UserPassWord(Composite parent){
	    (new Label(parent, SWT.NULL)).setText("User name: ");
	    Text textUser = new Text(parent, SWT.SINGLE | SWT.BORDER);
	    textUser.setText("default_user");
	    textUser.setTextLimit(16);
	    (new Label(parent, SWT.NULL)).setText("Password: ");
	    Text textPassword = new Text(parent,SWT.SINGLE | SWT.BORDER);
	    textPassword.setEchoChar('*');
	    System.out.println(textPassword.getEchoChar());	    
	    textPassword.setText("simmay");
    }

    public	void	CreateSnippets(Composite parent){
        Display display = parent.getDisplay();
    	final Clipboard cb = new Clipboard(display);
    	parent.setLayout(new FormLayout());
    	final Text text = new Text(parent, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL);
    	
    	Button copy = new Button(parent, SWT.PUSH);
    	copy.setText("Copy");
    	copy.addListener (SWT.Selection, new Listener () {
    		public void handleEvent (Event e) {
    			String textData = text.getSelectionText();
    			TextTransfer textTransfer = TextTransfer.getInstance();
    			cb.setContents(new Object[]{textData}, new Transfer[]{textTransfer});
    		}
    	});
    	
    	Button paste = new Button(parent, SWT.PUSH);
    	paste.setText("Paste");
    	paste.addListener (SWT.Selection, new Listener () {
    		public void handleEvent (Event e) {
    			TextTransfer transfer = TextTransfer.getInstance();
    			String data = (String)cb.getContents(transfer);
    			if (data != null) {
    				text.insert(data);
    			}
    		}
    	});
    	
    	FormData data = new FormData();
    	data.right = new FormAttachment(100, -5);
    	data.top = new FormAttachment(0, 5);
    	copy.setLayoutData(data);
    	
    	data = new FormData();
    	data.right = new FormAttachment(100, -5);
    	data.top = new FormAttachment(copy, 5);
    	paste.setLayoutData(data);
    	
    	data = new FormData();
    	data.left = new FormAttachment(0, 5);
    	data.top = new FormAttachment(0, 5);
    	data.right = new FormAttachment(copy, -5);
    	data.bottom = new FormAttachment(100, -5);
    	text.setLayoutData(data);

    }    
}