gtkfilechooserui.java

来自「JAVA 所有包」· Java 代码 · 共 1,363 行 · 第 1/4 页

	}
    }

    public Dimension getMinimumSize(JComponent x)  {
	return new Dimension(MIN_SIZE);
    }

    public Dimension getMaximumSize(JComponent x) {
	return new Dimension(Integer.MAX_VALUE, Integer.MAX_VALUE);
    }

    protected void align(JComponent c) {
	c.setAlignmentX(JComponent.LEFT_ALIGNMENT);
	c.setAlignmentY(JComponent.TOP_ALIGNMENT);
    }

    public Action getNewFolderAction() {
        if (newFolderAction == null) {
            newFolderAction = new NewFolderAction();
            newFolderAction.setEnabled(!readOnly);
        }
        return newFolderAction;
    }

    //
    // DataModel for DirectoryComboxbox
    //
    protected DirectoryComboBoxModel createDirectoryComboBoxModel(JFileChooser fc) {
	return new DirectoryComboBoxModel();
    }

    /**
     * Data model for a type-face selection combo-box.
     */
    protected class DirectoryComboBoxModel extends AbstractListModel implements ComboBoxModel {
	Vector directories = new Vector();
	File selectedDirectory = null;
	JFileChooser chooser = getFileChooser();
	FileSystemView fsv = chooser.getFileSystemView();

	public DirectoryComboBoxModel() {
	    // Add the current directory to the model, and make it the
	    // selectedDirectory
	    File dir = getFileChooser().getCurrentDirectory();
	    if (dir != null) {
		addItem(dir);
	    }
	}

	/**
	 * Adds the directory to the model and sets it to be selected,
	 * additionally clears out the previous selected directory and
	 * the paths leading up to it, if any.
	 */
	private void addItem(File directory) {

	    if (directory == null) {
		return;
	    }

            int oldSize = directories.size();
	    directories.clear();
            if (oldSize > 0) {
                fireIntervalRemoved(this, 0, oldSize);
            }

	    // Get the canonical (full) path. This has the side
	    // benefit of removing extraneous chars from the path,
	    // for example /foo/bar/ becomes /foo/bar
	    File canonical = null;
	    try {
		canonical = fsv.createFileObject(ShellFolder.getNormalizedFile(directory).getPath());
	    } catch (IOException e) {
		// Maybe drive is not ready. Can't abort here.
		canonical = directory;
	    }

	    // create File instances of each directory leading up to the top
	    File f = canonical;
	    do {
		directories.add(f);
	    } while ((f = f.getParentFile()) != null);
            int newSize = directories.size();
            if (newSize > 0) {
                fireIntervalAdded(this, 0, newSize);
            }
	    setSelectedItem(canonical);
	}

	public void setSelectedItem(Object selectedDirectory) {
	    this.selectedDirectory = (File)selectedDirectory;
            fireContentsChanged(this, -1, -1);
	}

	public Object getSelectedItem() {
	    return selectedDirectory;
	}

	public int getSize() {
	    return directories.size();
	}

	public Object getElementAt(int index) {
	    return directories.elementAt(index);
	}
    }

    /**
     * Acts when DirectoryComboBox has changed the selected item.
     */
    protected class DirectoryComboBoxAction extends AbstractAction {
	protected DirectoryComboBoxAction() {
	    super("DirectoryComboBoxAction");
	}

	public void actionPerformed(ActionEvent e) {
	    File f = (File)directoryComboBox.getSelectedItem();
	    getFileChooser().setCurrentDirectory(f);
	}
    }

    /**
     * Creates a new folder.
     */
    private class NewFolderAction extends AbstractAction {
        protected NewFolderAction() {
            super(FilePane.ACTION_NEW_FOLDER);
        }
        public void actionPerformed(ActionEvent e) {
            if (readOnly) {
                return;
            }
            JFileChooser fc = getFileChooser();
            File currentDirectory = fc.getCurrentDirectory();
            String dirName = (String) JOptionPane.showInputDialog(fc, 
                    newFolderDialogText, newFolderButtonText, 
                    JOptionPane.PLAIN_MESSAGE);
            
            if (dirName != null) {
                File newDir = fc.getFileSystemView().createFileObject
                        (currentDirectory, dirName);
                if (newDir == null || !newDir.mkdir()) {
                    JOptionPane.showMessageDialog(fc,
                            newFolderErrorText + newFolderErrorSeparator + " \"" + 
                            dirName + "\"",
                            newFolderErrorText, JOptionPane.ERROR_MESSAGE);
                }
                fc.rescanCurrentDirectory();
            }
        }
    }

    private class GTKApproveSelectionAction extends ApproveSelectionAction {
        public void actionPerformed(ActionEvent e) {
            if (isDirectorySelected()) {
                File dir = getDirectory();
                try {
                    // Strip trailing ".."
                    if (dir != null) {
                        dir = ShellFolder.getNormalizedFile(dir);
                    }
                } catch (IOException ex) {
                    // Ok, use f as is
                }
                if (getFileChooser().getCurrentDirectory().equals(dir)) {
                    directoryList.clearSelection();
                    fileList.clearSelection();
	            ListSelectionModel sm = fileList.getSelectionModel();
                    if (sm instanceof DefaultListSelectionModel) {
	                ((DefaultListSelectionModel)sm).moveLeadSelectionIndex(0);       
                        ((DefaultListSelectionModel)sm).setAnchorSelectionIndex(0);
	            }
	            rescanCurrentDirectory(getFileChooser());
                    return;
                }
            }
            super.actionPerformed(e);
        }
    }

    /**
     * Renames file
     */
    private class RenameFileAction extends AbstractAction {
        protected RenameFileAction() {
            super(FilePane.ACTION_EDIT_FILE_NAME);
        }
        public void actionPerformed(ActionEvent e) {
            if (getFileName().equals("")) {
                return;
            }
            JFileChooser fc = getFileChooser();
            File currentDirectory = fc.getCurrentDirectory();
            String newFileName = (String) JOptionPane.showInputDialog
                   (fc, new MessageFormat(renameFileDialogText).format
                           (new Object[] { getFileName() }),
                           renameFileButtonText, JOptionPane.PLAIN_MESSAGE, null, null,
                           getFileName());
            
            if (newFileName != null) {
                File oldFile = fc.getFileSystemView().createFileObject
                        (currentDirectory, getFileName());
                File newFile = fc.getFileSystemView().createFileObject
                        (currentDirectory, newFileName);
                if (oldFile == null || newFile == null || 
                        !getModel().renameFile(oldFile, newFile)) {
                    JOptionPane.showMessageDialog(fc,
                            new MessageFormat(renameFileErrorText).
                            format(new Object[] { getFileName(), newFileName}),
                            renameFileErrorTitle, JOptionPane.ERROR_MESSAGE);
                } else {
                    setFileName(getFileChooser().getName(newFile));
                    fc.rescanCurrentDirectory();
                }
            }
        }
    }

    //
    // Renderer for Filter ComboBox
    //
    protected FilterComboBoxRenderer createFilterComboBoxRenderer() {
        return new FilterComboBoxRenderer();
    }

    /**
     * Render different filters
     */
    public class FilterComboBoxRenderer extends DefaultListCellRenderer implements UIResource {
        public String getName() {
            // As SynthComboBoxRenderer's are asked for a size BEFORE they
            // are parented getName is overriden to force the name to be
            // ComboBox.renderer if it isn't set. If we didn't do this the
            // wrong style could be used for size calculations.
            String name = super.getName();
            if (name == null) {
                return "ComboBox.renderer";
            }
            return name;
        }

        public Component getListCellRendererComponent(JList list, Object value,
                                                      int index, boolean isSelected,
                                                      boolean cellHasFocus) {

            super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);

            setName("ComboBox.listRenderer");

            if (value != null) {
                if (value instanceof FileFilter) {
                    setText(((FileFilter) value).getDescription());
                }
            } else {
                setText("");
            }

            return this;
        }
    }

    //
    // DataModel for Filter Combobox
    //
    protected FilterComboBoxModel createFilterComboBoxModel() {
        return new FilterComboBoxModel();
    }

    /**
     * Data model for filter combo-box.
     */
    protected class FilterComboBoxModel extends AbstractListModel
            implements ComboBoxModel, PropertyChangeListener {
        protected FileFilter[] filters;

        protected FilterComboBoxModel() {
            super();
            filters = getFileChooser().getChoosableFileFilters();
        }

        public void propertyChange(PropertyChangeEvent e) {
            String prop = e.getPropertyName();
            if (prop == JFileChooser.CHOOSABLE_FILE_FILTER_CHANGED_PROPERTY) {
                filters = (FileFilter[]) e.getNewValue();
                fireContentsChanged(this, -1, -1);
            } else if (prop == JFileChooser.FILE_FILTER_CHANGED_PROPERTY) {
                fireContentsChanged(this, -1, -1);
            }
        }

        public void setSelectedItem(Object filter) {
            if (filter != null) {
                getFileChooser().setFileFilter((FileFilter) filter);
                fireContentsChanged(this, -1, -1);
            }
        }

        public Object getSelectedItem() {
            // Ensure that the current filter is in the list.
            // NOTE: we shouldnt' have to do this, since JFileChooser adds
            // the filter to the choosable filters list when the filter
            // is set. Lets be paranoid just in case someone overrides
            // setFileFilter in JFileChooser.
            FileFilter currentFilter = getFileChooser().getFileFilter();
            boolean found = false;
            if (currentFilter != null) {
                for (int i = 0; i < filters.length; i++) {
                    if (filters[i] == currentFilter) {
                        found = true;
                    }
                }
                if (found == false) {
                    getFileChooser().addChoosableFileFilter(currentFilter);
                }
            }
            return getFileChooser().getFileFilter();
        }

        public int getSize() {
            if (filters != null) {
                return filters.length;
            } else {
                return 0;
            }
        }

        public Object getElementAt(int index) {
            if (index > getSize() - 1) {
                // This shouldn't happen. Try to recover gracefully.
                return getFileChooser().getFileFilter();
            }
            if (filters != null) {
                return filters[index];
            } else {
                return null;
            }
        }
    }
}