windowsfilechooserui.java

来自「java jdk 1.4的源码」· Java 代码 · 共 2,088 行 · 第 1/5 页

	    }
	    JComponent accessory = (JComponent) e.getNewValue();
	    if(accessory != null) {
		getAccessoryPanel().add(accessory, BorderLayout.CENTER);
	    }
	}
    }

    private void doApproveButtonTextChanged(PropertyChangeEvent e) {
	JFileChooser chooser = getFileChooser();
	approveButton.setText(getApproveButtonText(chooser));
	approveButton.setToolTipText(getApproveButtonToolTipText(chooser));
	approveButton.setMnemonic(getApproveButtonMnemonic(chooser));
    }

    private void doDialogTypeChanged(PropertyChangeEvent e) {
	JFileChooser chooser = getFileChooser();
	approveButton.setText(getApproveButtonText(chooser));
	approveButton.setToolTipText(getApproveButtonToolTipText(chooser));
	approveButton.setMnemonic(getApproveButtonMnemonic(chooser));
	if (chooser.getDialogType() == JFileChooser.SAVE_DIALOG) {
	    lookInLabel.setText(saveInLabelText);
	} else {
	    lookInLabel.setText(lookInLabelText);
	}
    }

    private void doApproveButtonMnemonicChanged(PropertyChangeEvent e) {
	approveButton.setMnemonic(getApproveButtonMnemonic(getFileChooser()));
    }

    private void doControlButtonsChanged(PropertyChangeEvent e) {
	if(getFileChooser().getControlButtonsAreShown()) {
	    addControlButtons();
	} else {
	    removeControlButtons();
	}
    }

    /*
     * Listen for filechooser property changes, such as
     * the selected file changing, or the type of the dialog changing.
     */
    public PropertyChangeListener createPropertyChangeListener(JFileChooser fc) {
	return new PropertyChangeListener() {
	    public void propertyChange(PropertyChangeEvent e) {
		String s = e.getPropertyName();
		if(s.equals(JFileChooser.SELECTED_FILE_CHANGED_PROPERTY)) {
		    doSelectedFileChanged(e);
		} else if (s.equals(JFileChooser.SELECTED_FILES_CHANGED_PROPERTY)) {
		    doSelectedFilesChanged(e);
		} else if(s.equals(JFileChooser.DIRECTORY_CHANGED_PROPERTY)) {
		    doDirectoryChanged(e);
		} else if(s.equals(JFileChooser.FILE_FILTER_CHANGED_PROPERTY)) {
		    doFilterChanged(e);
		} else if(s.equals(JFileChooser.FILE_SELECTION_MODE_CHANGED_PROPERTY)) {
		    doFileSelectionModeChanged(e);
		} else if(s.equals(JFileChooser.MULTI_SELECTION_ENABLED_CHANGED_PROPERTY)) {
		    doMultiSelectionChanged(e);
		} else if(s.equals(JFileChooser.ACCESSORY_CHANGED_PROPERTY)) {
		    doAccessoryChanged(e);
		} else if (s.equals(JFileChooser.APPROVE_BUTTON_TEXT_CHANGED_PROPERTY) ||
			   s.equals(JFileChooser.APPROVE_BUTTON_TOOL_TIP_TEXT_CHANGED_PROPERTY)) { 
		    doApproveButtonTextChanged(e);
		} else if(s.equals(JFileChooser.DIALOG_TYPE_CHANGED_PROPERTY)) {
		    doDialogTypeChanged(e);
		} else if(s.equals(JFileChooser.APPROVE_BUTTON_MNEMONIC_CHANGED_PROPERTY)) {
		    doApproveButtonMnemonicChanged(e);
		} else if(s.equals(JFileChooser.CONTROL_BUTTONS_ARE_SHOWN_CHANGED_PROPERTY)) {
		    doControlButtonsChanged(e);
		} else if (s.equals("componentOrientation")) {
		    ComponentOrientation o = (ComponentOrientation)e.getNewValue();
		    JFileChooser cc = (JFileChooser)e.getSource();
		    if (o != (ComponentOrientation)e.getOldValue()) {
			cc.applyComponentOrientation(o);
		    }
		    if (detailsTable != null) {
			detailsTable.setComponentOrientation(o);
			detailsTable.getParent().getParent().setComponentOrientation(o);
		    }
		} else if (s.equals("ancestor")) {
		    if (e.getOldValue() == null && e.getNewValue() != null) {
			// Ancestor was added, set initial focus
			filenameTextField.selectAll();
			filenameTextField.requestFocus();
		    }
		}
	    }
	};
    }


    protected void removeControlButtons() {
	getBottomPanel().remove(getButtonPanel());
    }

    protected void addControlButtons() {
	getBottomPanel().add(getButtonPanel());
    }

    private void ensureIndexIsVisible(int i) {
	if (i >= 0) {
	    list.ensureIndexIsVisible(i);
	    if (detailsTable != null) {
		detailsTable.scrollRectToVisible(detailsTable.getCellRect(i, COLUMN_FILENAME, true));
	    }
	}
    }

    public void ensureFileIsVisible(JFileChooser fc, File f) {
	ensureIndexIsVisible(getModel().indexOf(f));
    }

    public void rescanCurrentDirectory(JFileChooser fc) {
	getModel().validateFileCache();
    }

    public String getFileName() {
	if(filenameTextField != null) {
	    return filenameTextField.getText();
	} else {
	    return null;
	}
    }

    public void setFileName(String filename) {
	if(filenameTextField != null) {
	    filenameTextField.setText(filename);
	}
    }

    /**
     * Property to remember whether a directory is currently selected in the UI.
     * This is normally called by the UI on a selection event.
     *
     * @param directorySelected if a directory is currently selected.
     * @since 1.4
     */
    protected void setDirectorySelected(boolean directorySelected) {
	super.setDirectorySelected(directorySelected);
	JFileChooser chooser = getFileChooser();
	if(directorySelected) {
	    approveButton.setText(directoryOpenButtonText);
	    approveButton.setToolTipText(directoryOpenButtonToolTipText);
	    approveButton.setMnemonic(directoryOpenButtonMnemonic);
	} else {
	    approveButton.setText(getApproveButtonText(chooser));
	    approveButton.setToolTipText(getApproveButtonToolTipText(chooser));
	    approveButton.setMnemonic(getApproveButtonMnemonic(chooser));
	}
    }

    public String getDirectoryName() {
	// PENDING(jeff) - get the name from the directory combobox
	return null;
    }

    public void setDirectoryName(String dirname) {
	// PENDING(jeff) - set the name in the directory combobox
    }

    protected DirectoryComboBoxRenderer createDirectoryComboBoxRenderer(JFileChooser fc) {
	return new DirectoryComboBoxRenderer();
    }

    //
    // Renderer for DirectoryComboBox
    //
    class DirectoryComboBoxRenderer extends DefaultListCellRenderer  {
	IndentIcon ii = new IndentIcon();
	public Component getListCellRendererComponent(JList list, Object value,
						      int index, boolean isSelected,
						      boolean cellHasFocus) {

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

	    if (value == null) {
		setText("");
		return this;
	    }
	    File directory = (File)value;
	    setText(getFileChooser().getName(directory));
	    Icon icon = getFileChooser().getIcon(directory);
	    ii.icon = icon;
	    ii.depth = directoryComboBoxModel.getDepth(index);
	    setIcon(ii);

	    return this;
	}
    }

    final static int space = 10;
    class IndentIcon implements Icon {

	Icon icon = null;
	int depth = 0;

	public void paintIcon(Component c, Graphics g, int x, int y) {
	    if (c.getComponentOrientation().isLeftToRight()) {
		icon.paintIcon(c, g, x+depth*space, y);
	    } else {
		icon.paintIcon(c, g, x, y);
	    }
	}

	public int getIconWidth() {
	    return icon.getIconWidth() + depth*space;
	}

	public int getIconHeight() {
	    return icon.getIconHeight();
	}

    }

    //
    // 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();
	int[] depths = null;
	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;
	    }

	    directories.clear();

	    File[] baseFolders;
	    if (useShellFolder) {
		baseFolders = (File[])ShellFolder.get("fileChooserComboBoxFolders");
	    } else {
		baseFolders = fsv.getRoots();
	    }
	    directories.addAll(Arrays.asList(baseFolders));

	    // 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 = directory.getCanonicalFile();
	    } 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
	    try {
		File sf = ShellFolder.getShellFolder(canonical);
		File f = sf;
		Vector path = new Vector(10);
		do {
		    path.addElement(f);
		} while ((f = f.getParentFile()) != null);

		int pathCount = path.size();
		// Insert chain at appropriate place in vector
		for (int i = 0; i < pathCount; i++) {
		    f = (File)path.get(i);
		    if (directories.contains(f)) {
			int topIndex = directories.indexOf(f);
			for (int j = i-1; j >= 0; j--) {
			    directories.insertElementAt(path.get(j), topIndex+i-j);
			}
			break;
		    }
		}
		calculateDepths();
		setSelectedItem(sf);
	    } catch (FileNotFoundException ex) {
		calculateDepths();
	    }
	}

	private void calculateDepths() {
	    depths = new int[directories.size()];
	    for (int i = 0; i < depths.length; i++) {
		File dir = (File)directories.get(i);
		File parent = dir.getParentFile();
		depths[i] = 0;
		if (parent != null) {
		    for (int j = i-1; j >= 0; j--) {
			if (parent.equals((File)directories.get(j))) {
			    depths[i] = depths[j] + 1;
			    break;
			}
		    }
		}
	    }
	}

	public int getDepth(int i) {
	    return (depths != null && i >= 0 && i < depths.length) ? depths[i] : 0;
	}

	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);
	}
    }

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

    /**
     * Render different type sizes and styles.
     */
    public class FilterComboBoxRenderer extends DefaultListCellRenderer {
	public Component getListCellRendererComponent(JList list,
	    Object value, int index, boolean isSelected,
	    boolean cellHasFocus) {

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

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

	    return this;
	}
    }

    //
    // DataModel for Types Comboxbox
    //
    protected FilterComboBoxModel createFilterComboBoxModel() {
	return new FilterComboBoxModel();
    }

    /**
     * Data model for a type-face selection 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);
		setFileName(null);
		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(curren