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Thread: revalidating JPanel when image is deleted from file

  1. #1
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    Default revalidating JPanel when image is deleted from file

    When the user presses the delete button, the code below runs but, I cannot figure out why, the images I have deleted from the file directory won't update on pPanel. this panel consist of a JSplitPane which consists of a JScrollPane and bPanel (for the buttons) and the JScrollPane has a JList which has a DefaultModelList.


     class dListener implements ActionListener {
    			public void actionPerformed(ActionEvent event) {
    				//System.out.println("delete");
     
    				if(listofFiles.length < 0)
    				{
    					return;
    				}
     
    				if(event.getSource() == dButton)
    				{
    					File folder = new File(path);
    					File[] listofFiles = folder.listFiles();
     
    					int a = list.getSelectedIndex();
     
    					try {
    						listofFiles[a].delete();
    						System.out.println(listofFiles[a].getName() + " is deleted");
     
    						//bPanel = buttonPanel(bPanel);
    						//listModel = loadImages();
    						//list = new JList(listModel);
    						//photoLister = new JScrollPane(list);
    						//imageSplit = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, photoLister, bPanel);
     
    						pPanel.revalidate();
    						pPanel.repaint();
     
    					} catch (Exception x) {
     
    						x.printStackTrace();
    					}
    				}
     
    			}
    	 }


  2. #2
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    Default

    Have you tried reprinting the whole frame?

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    Default Re: revalidating JPanel when image is deleted from file

    why, the images I have deleted from the file directory won't update on pPanel.
    Can you explain what "update on pPanel" means?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: revalidating JPanel when image is deleted from file

    Quote Originally Posted by Norm View Post
    Can you explain what "update on pPanel" means?
    what I mean by "update on pPanel" is that once I have removed an image path from my file system, I want it to show on the panel that it has been deleted/removed

    --- Update ---

    Quote Originally Posted by rockking8350 View Post
    Have you tried reprinting the whole frame?
    I have, in my main class I did f.revalidate(); and f.repaint();

    its still not updating.

    I tried creating a new DefaultModelList, JList, JScrollPane, and JSplitPane. but when I do that, the pictures update & the bPanel disappears (panel with buttons) [bPanel is created with a seperate function]

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    Default Re: revalidating JPanel when image is deleted from file

    I want it to show on the panel that it has been deleted/removed
    Where do you want it shown? Is there a component that is used to show messages to the user?
    Like a JLabel or a text field.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: revalidating JPanel when image is deleted from file

    I want it shown on pPanel, which consists of the jsplitpane that has the jscrollpane and the button panel

    & I don't' have a component that shows whether the image is sucessfully loaded or can't find image yet, as of right now I'm just printing it in the command line

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    Default Re: revalidating JPanel when image is deleted from file

    I don't know if the jsplitpane or jscrollpane classes have any way to display messages.
    Could you add a JLabel or JTextArea where you could display messages?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: revalidating JPanel when image is deleted from file

    I can display a JLabel in the bPanel, and it can show the user whether they uploaded the image sucessfully. but my original problem was to show that the image in the jscrollpane has been deleted once the user deletes the image from the file system

  9. #9
    Super Moderator Norm's Avatar
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    Default Re: revalidating JPanel when image is deleted from file

    show that the image in the jscrollpane has been deleted
    Add a message to the component that is used to show messages.
    If you don't understand my answer, don't ignore it, ask a question.

  10. The Following User Says Thank You to Norm For This Useful Post:

    cryslam (April 10th, 2013)

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