MovieEditor lets user edit a movie in Java

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} public void updateView() { // When model changes - update each fld componenet Movie m = myModelgetCurrentMovie(); fldTitlesetText(mgetTitle()); fldDirectorsetText(mgetDirector()); fldYearsetText(mgetYear()); fldLabelsetText(mgetLabel()); textAreasetText(mgetComments()); fldRatingsetText(MovieRatingstringAt(mgetRating())); fldGenresetText(MovieGenrestringAt(mgetGenre())); fldFormatsetText(MovieFormatstringAt(mgetFormat())); fldEvaluationsetText( MovieEvaluationstringAt(mgetEvaluation())); } // Implement ActionListener public void actionPerformed(ActionEvent e) { // Since only three buttons, easier to use one listener if (egetActionCommand()equals("edit")) { Movie edited = MovieEditorgetInstance()showDialog( WmvcAppgetFrame(), myModelgetCurrentMovie()); myModelreplaceCurrentMovie(edited); } else if (egetActionCommand()equals("previous")) { myModelsetCurrentMovieIndex( myModelgetCurrentMovieIndex()-1); } else if (egetActionCommand()equals("next")) { myModelsetCurrentMovieIndex( myModelgetCurrentMovieIndex()+1); } }
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} MovieEditor Class The MovieEditor class extends the Swing JDialog class to implement a modal dialog to edit Movies Much of its code is very similar to the MovieItemView since it follows the same layout of Movie attributes It uses JComboBox components to allow the user to select from a list of attributes, and JTextField components to allow the String values to be edited There is no interaction between the MovieModel and the MovieEditor MovieEditor dialogs are created by the MainView and MovieItemView classes in response to user commands The edited Movie object from the MovieEditor is handled appropriately by those classes3 Listing 6-7 MovieEditorjava
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MovieEditor lets user edit a movie
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/* MovieEditor - edits a Movie object for MovieCat * Copyright (c) 2001, Bruce E Wampler */ import javaawt*; import javaawtevent*; import javaxswing*; public class MovieEditor extends JDialog implements ActionListener { // Implement MovieEditor with Singleton pattern private static MovieEditor theMovieEditor = null; private Movie editedMovie = null; protected GridBagLayout gridbag; protected GridBagConstraints c; private JPanel itemPanel; // Various components needed for constructing the view // We use private statics of each of these since there will // be only one instance of the editor private static JLabel lblTitle=new JLabel("Movie Title: "); private static JTextField fldTitle = new JTextField(30);
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JLabel lblDirector=new JLabel("Director: "); JTextField fldDirector = new JTextField(30); JLabel lblYear = new JLabel("Year: "); JTextField fldYear = new JTextField(6); JLabel lblRating = new JLabel("Rating: "); JComboBox fldRating; JLabel lblGenre = new JLabel(" Genre: "); JComboBox fldGenre; JLabel lblFormat = new JLabel(" Format: "); JComboBox fldFormat; JLabel lblLabel = new JLabel(" Label: "); JTextField fldLabel = new JTextField(8); JLabel lblEvaluation = new JLabel("My Rating: "); private static JComboBox fldEvaluation; private static JLabel lblComments=new JLabel("Comments: "); private private private private private static static static static static JTextArea textArea; JButton bPrevious; JButton bNext; JButton bUpdate; JButton bRevert; // for a local copy
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private Movie movie;
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protected void setAndAdd(JComponent comp, int gx, int gy, int gheight, int gwidth) { // to simplify laying out the gridbag canchor = cWEST; cgridx = gx; cgridy = gy; cgridheight = gheight; cgridwidth = gwidth; gridbagsetConstraints(comp,c); itemPaneladd(comp); } static public MovieEditor getInstance() { if (theMovieEditor == null) { theMovieEditor = new MovieEditor(); } return theMovieEditor;
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} public MovieEditor() { // call JDialog constructor super(WmvcAppgetFrame(), "Edit Movie", true); } public void initialize() { // We will use a GridBag for simple layout of itemView itemPanel = new JPanel(); // surrounding Panel gridbag = new GridBagLayout(); c = new GridBagConstraints(); itemPanelsetLayout(gridbag); itemPanelsetBorder(BorderFactorycreateEmptyBorder( 5, 5, 5, 5)); // Movie Title: ________________________ setAndAdd(lblTitle, 0, 0, 1, 1); setAndAdd(fldTitle, 1, 0, 1, cREMAINDER); // Director: _____________________ setAndAdd(lblDirector, 0, 1, 1, 1); setAndAdd(fldDirector, 1, 1, 1, cREMAINDER); // Year: _______ Genre: _________ setAndAdd(lblYear, 0, 2, 1, 1); setAndAdd(fldYear, 1, 2, 1, 1); setAndAdd(lblGenre, 2, 2, 1, cRELATIVE); fldGenre = new JComboBox(MovieGenregetNames()); setAndAdd(fldGenre, 3, 2, 1, cREMAINDER); // Rating: _______ Format: __________ setAndAdd(lblRating, 0, 3, 1, 1); fldRating = new JComboBox(MovieRatinggetNames()); setAndAdd(fldRating, 1, 3, 1, 1); setAndAdd(lblFormat, 2, 3, 1, cRELATIVE); fldFormat = new JComboBox(MovieFormatgetNames()); setAndAdd(fldFormat, 3, 3, 1, cREMAINDER); // My Rating: ______
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