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Thread: drag and drop word to match image

  1. #51
    Super Moderator Norm's Avatar
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    Default Re: drag and drop word to match image

    can i get an example of some sort
    Look at the code in post#11.
    Where does it get the String it appends to the currently displayed Strings?
    There are several references to a reject method. Add code to call the reject method if the String that is received is the one to be rejected. Otherwise do the append as the code currently does.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: drag and drop word to match image

    i dont get it.. im confused

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    Default Re: drag and drop word to match image

    Which part don't you understand? I'll list them one at a time so that you don't confuse them:
    Where does the target class object get the dragged String from?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: drag and drop word to match image

    Quote Originally Posted by Norm View Post
    Which part don't you understand? I'll list them one at a time so that you don't confuse them:
    Where does the target class object get the dragged String from?
    DraggableLabel

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    Default Re: drag and drop word to match image

    How does the DropTargetTextArea class get the String that was dropped on it?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: drag and drop word to match image

    This has become much more painful than it needs to be. I suggest you do this:

    Edit: Oops, I forgot to mention the starting point: the code at post #11.

    1. Update the existing code to use Swing components, JTextArea, JLabel, etc. While the code you have may ultimately work (not sure), the recommendation is to use Swing and then to not mix AWT and Swing components.
    2. Add a setPreferredSize() to the DropTargetTextArea in the constructor. I used 200 x 200, but suit yourself.
    3. After the code has been updated, copy the existing class DropTargetTextArea and paste it into the Example class at the same level.
    4. Rename the pasted code DropTargetJLabel, creating a new class. Modify it to extend JLabel and leave implements DropTargetListener.
    5. In the new class, fix the name of the constructor.
    6. Update your main() method to:
        public static void main( String[] args )
        {
            // Create the main container and its contents
            JFrame frame = new JFrame( "Test" );
            frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
            JPanel panel = new JPanel();
            JTextArea textArea = new DropTargetTextArea();
            JLabel jLabel = new DropTargetJLabel();
     
            JLabel testLabel = new DraggableLabel( "test" );
            JLabel testingLabel = new DraggableLabel( "testing" );
     
            // construct the final GUI
            panel.add( testLabel );
            panel.add( testingLabel );
            frame.add( textArea, BorderLayout.WEST );
            frame.add( jLabel, BorderLayout.EAST );
            frame.add( panel, BorderLayout.SOUTH );
     
            // pack the frame and set it visible
            frame.pack();
            frame.setVisible( true );
        }
    7. Update the imports.

    Let us know if you have any questions.

    In the future, please don't be stymied by "I see red squigglies." They are there to help you move forward, not send you backwards. If you need help with them but don't feel like typing them out, you can hover over them, mouse into the resulting detail, select the text, <CTRL-C> to copy, and then paste the text directly into a post.

    Good luck. Let us know if you have remaining questions.

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    Default Re: drag and drop word to match image

    Quote Originally Posted by Norm View Post
    How does the DropTargetTextArea class get the String that was dropped on it?
    n
    Last edited by stresstedout; March 4th, 2014 at 01:37 AM.

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    Default Re: drag and drop word to match image

    Where is there a String in that code?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: drag and drop word to match image

    Quote Originally Posted by Norm View Post
    Where is there a String in that code?
    sorry i pasted the wrong code updated it and here is the string
    Last edited by stresstedout; March 4th, 2014 at 01:37 AM.

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    Default Re: drag and drop word to match image

    Ok, that looks like it.

    Now add code to test what is in the String and to either accept it or reject it. The earlier code had two Strings to Drag: "test" and "testing". Chose one to accept and reject the other. Compile and test the code to see if the logic works.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: drag and drop word to match image

    so at the moment it drags the text and drops in to the label which has been defined near the beginning of the code.

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    Default Re: drag and drop word to match image

    Did you change the code to reject one of the Drops? Does it work? The DnD from one label should be accepted and the DnD from the other label rejected.

    the label which has been defined
    You should use the variable name so there is no confusion.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: drag and drop word to match image

    not sure how to do this.

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    Default Re: drag and drop word to match image

    Look at the code. There are statements to accept and to reject the drop.

    Use an if statement to compare the Dropped String against the one to be accepted.
    if (String matches) {
       accept
    }else{
       reject
    }
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: drag and drop word to match image

     
    try {
     
        Transferable transferable = evt.getTransferable();
     
        if (transferable.isDataFlavorSupported(DataFlavor.stringFlavor)) {
     
      evt.acceptDrop(DnDConstants.ACTION_COPY_OR_MOVE);
     
     
    }
    Last edited by stresstedout; March 4th, 2014 at 01:37 AM.

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    Default Re: drag and drop word to match image

    What is that for?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: drag and drop word to match image

    reject the drop... i dont know what im doing

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    Default Re: drag and drop word to match image

    I originally said that DnD was complicated and you said: i know how to do drag and drop
    I'd suggest that you study the tutorial on DnD using the link in post#2
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: drag and drop word to match image

    ive only really worked on drag and drop no reject drops.

    Please can you explain to me, i dont have much time

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    Default Re: drag and drop word to match image

    Look back over the last posts. It's mostly explained there.

    I'm done for tonight. I'll be back tomorrow.
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    Default Re: drag and drop word to match image

    please help me

    --- Update ---

    please please please please someone help me

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    Default Re: drag and drop word to match image

    Choose one of the Strings that are dropped on the target to be accepted. The earlier code had two Strings: "test" and "testng". Write an if statement that tests if the dropped String is the one to be accepted and print out a message: "accepted" if the String matches and print out "rejected" if the String does not match.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: drag and drop word to match image

    Quote Originally Posted by Norm View Post
    Choose one of the Strings that are dropped on the target to be accepted. The earlier code had two Strings: "test" and "testng". Write an if statement that tests if the dropped String is the one to be accepted and print out a message: "accepted" if the String matches and print out "rejected" if the String does not match.
    is this correct??? if not please help me
    Last edited by stresstedout; March 4th, 2014 at 01:37 AM.

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    Default Re: drag and drop word to match image

    Where does the code compare the dropped String against the String that is to be accepted?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: drag and drop word to match image

    i dont think it does.

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