rtextfilechooser.java

具有不同语法高亮的编辑器实例

/*****************************************************************************/


	/**
	 * Returns the color used to paint hidden files if hidden files are being
	 * shown.
	 *
	 * @return The color used to paint hidden file names.
	 * @see #setHiddenFileColor
	 */
	public Color getHiddenFileColor() {
		return hiddenFileColor;
	}


/*****************************************************************************/


	/**
	 * Creates the icons used by this file chooser.  This method can be
	 * called when the user changes the Look and Feel, and icons used in this
	 * file chooser will change to reflect the new Look and Feel.
	 */
	public void getIcons() {


		// Icons for buttons at the top.  Use pretty, homemade defaults
		// if any of these aren't found.
		newFolderIcon    = UIManager.getIcon("FileChooser.newFolderIcon");
		upFolderIcon     = UIManager.getIcon("FileChooser.upFolderIcon");
		//homeFolderIcon   = UIManager.getIcon("FileChooser.homeFolderIcon");
		detailsViewIcon  = UIManager.getIcon("FileChooser.detailsViewIcon");
		listViewIcon     = UIManager.getIcon("FileChooser.listViewIcon");

		String path = "org/fife/ui/rtextfilechooser/images/";
		if (newFolderIcon==null)
			newFolderIcon = new ImageIcon(cl.findResource(path + "createnewdirectory.gif"));
		if (upFolderIcon==null)
			upFolderIcon = new ImageIcon(cl.findResource(path + "uponelevel.gif"));
		if (detailsViewIcon==null)
			detailsViewIcon = new ImageIcon(cl.findResource(path + "detailsview.gif"));
		if (listViewIcon==null)
			listViewIcon = new ImageIcon(cl.findResource(path + "listview.gif"));
		iconsViewIcon = new ImageIcon(cl.findResource(path + "listview.gif"));

	}


/*****************************************************************************/


	/**
	 * Returns whether or not the current OS is case-insensitive (e.g.,
	 * is Windows or OS X).
	 *
	 * @return Whether or not the underlying OS is case-insensitive.
	 */
	private static final boolean getIgnoreCase() {
		String os = System.getProperty("os.name");
		boolean ignoreCase = false;
		if (os!=null) {
			os = os.toLowerCase();
			ignoreCase =	os.indexOf("windows")>-1   ||
						os.indexOf("mac os x")>-1;
		}
		return ignoreCase;
	}


/*****************************************************************************/


	/**
	 * Returns the mnemonic for the given key.
	 *
	 * @param key The key.
	 * @return The mnemonic.
	 */
	private int getMnemonic(String key) {

		Object value = UIManager.get(key);

		if (value == null)
			return 0;
		else if (value instanceof Integer) {
			return ((Integer)value).intValue();
		}
		else if (value instanceof String) {
			try {
				return Integer.parseInt((String)value);
			} catch (NumberFormatException nfe) { }
		}

		return 0;

	}


/*****************************************************************************/


	/**
	 * Returns the name of the file.
	 *
	 * @param f The file for which you want its name.
	 * @return The file's name.
	 */
	public String getName(File f) {
		String name = fileSystemView.getSystemDisplayName(f);
		if (name==null || name.equals(""))
			name = f.getAbsolutePath();
		return name;
	}


/*****************************************************************************/


	/**
	 * Returns the file selected by the user.  Note that if the user
	 * selected more than one file, only the first file selected is
	 * returned.
	 *
	 * @return The file selected by the user.
	 * @see #getSelectedFiles
	 * @see #setSelectedFile
	 * @see #setSelectedFiles
	 */
	public File getSelectedFile() {
		return selectedFiles[0];
	}


/*****************************************************************************/


	/**
	 * Returns the files selected by the user.
	 *
	 * @return The files selected by the user.
	 * @see #getSelectedFile
	 * @see #setSelectedFile
	 * @see #setSelectedFiles
	 */
	public File[] getSelectedFiles() {
		return (File[]) selectedFiles.clone();
	}


/*****************************************************************************/


	/**
	 * Returns whether hidden files and directories are shown by the file
	 * chooser.
	 *
	 * @return Whether hidden files are displayed.
	 * @see #setShowHiddenFiles
	 */
	public boolean getShowHiddenFiles() {
		return showHiddenFiles;
	}


/*****************************************************************************/


	/**
	 * Returns a string to use as the tool tip for a file in a view.  This
	 * tool tip will be localized according to the current locale.
	 *
	 * @param file The file for which to get the tool tip.
	 * @return The tool tip.
	 */
	final String getToolTipFor(File file) {
		return "<html><body>&nbsp;" + nameString + file.getName() +
			"<br>&nbsp;" + lastModifiedString +
			Utilities.getLastModifiedString(file.lastModified()) +
			"<br>&nbsp;" + sizeString + getFileSizeStringFor(file) +
			"</body></html>";
	}


/*****************************************************************************/


	/**
	 * Attempts to delete the files selected in the view.
	 */
	void handleDelete() {

		// Get the selected files.  If there are no selected files (i.e.,
		// they pressed "delete" when no files were selected), beep.
		File[] files = view.getSelectedFiles();
		if (files==null || files.length==0) {
			UIManager.getLookAndFeel().provideErrorFeedback(this);
			return;
		}

		// Prompt to confirm the file deletion.
		int count = files.length;
		int choice;
		if (count==1) {
			String fileName = files[0].getName();
			choice = JOptionPane.showConfirmDialog(this,
							deleteConfirmPrompt + fileName + "?");
		}
		else { // count>1
			choice = JOptionPane.showConfirmDialog(this,
							deleteMultipleConfirmPrompt);
		}

		// If they chose "yes," delete the files.
		if (choice==JOptionPane.YES_OPTION) {
			for (int i=0; i<count; i++) {
				if (!files[i].delete()) {
					Object[] arguments = { files[i].getName() };
					String msg = MessageFormat.format(deleteFailText,
												arguments);
					JOptionPane.showMessageDialog(this,
									msg, errorDialogTitle,
									JOptionPane.ERROR_MESSAGE);
				}
			}
			refreshView();
		}

	}


/*****************************************************************************/


	/**
	 * Gets the strings used on the various file chooser widgets.
	 */
	protected void installStrings() {

		ResourceBundle msg = ResourceBundle.getBundle(
							"org.fife.ui.rtextfilechooser.FileChooser");

		saveButtonText   = UIManager.getString("FileChooser.saveButtonText");
		openButtonText   = UIManager.getString("FileChooser.openButtonText");
		saveDialogTitleText = UIManager.getString("FileChooser.saveDialogTitleText");
		openDialogTitleText = UIManager.getString("FileChooser.openDialogTitleText");
		cancelButtonText = UIManager.getString("FileChooser.cancelButtonText");

		saveButtonMnemonic   = getMnemonic("FileChooser.saveButtonMnemonic");
		openButtonMnemonic   = getMnemonic("FileChooser.openButtonMnemonic");
		cancelButtonMnemonic = getMnemonic("FileChooser.cancelButtonMnemonic");

		saveButtonToolTipText   = UIManager.getString("FileChooser.saveButtonToolTipText");
		openButtonToolTipText   = UIManager.getString("FileChooser.openButtonToolTipText");
		cancelButtonToolTipText = UIManager.getString("FileChooser.cancelButtonToolTipText");

		lookInLabel.setText(msg.getString("LookInLabel"));
		upOneLevelButton.setToolTipText(msg.getString("UpOneLevelTTT"));
		newFolderButton.setToolTipText(msg.getString("NewFolderTTT"));
		listMenuItem.setText(msg.getString("ListViewTTT"));
		detailsMenuItem.setText(msg.getString("DetailsViewTTT"));
		iconsMenuItem.setText(msg.getString("IconsViewTTT"));
		fileNameLabel.setText(msg.getString("FileNameLabel"));
		filterLabel.setText(msg.getString("FilterLabel"));
		encodingLabel.setText(msg.getString("EncodingLabel"));

		// Populate the combo box with all available encodings.
		Map availcs = Charset.availableCharsets();
		Set keys = availcs.keySet();
		for (Iterator i=keys.iterator(); i.hasNext(); )
			encodingComboBox.addItem((String)i.next());

		newFolderPrompt = msg.getString("NewFolderPrompt");
		errorNewDirPrompt = msg.getString("ErrorNewDirPrompt");
		errorDialogTitle = msg.getString("Error");
		newNamePrompt = msg.getString("NewNamePrompt");
		renameFailText = msg.getString("RenameFailText");
		renameErrorMessage = msg.getString("RenameErrorMessage");
		deleteConfirmPrompt = msg.getString("DeleteConfirmPrompt");
		deleteMultipleConfirmPrompt = msg.getString("DeleteMultipleConfirmPrompt");
		deleteFailText = msg.getString("DeleteFailText");
		invalidFileNameMessage = msg.getString("InvalidFileName");

		directoryText = msg.getString("Directory"); // "Directory"
		fileText = msg.getString("File"); // "File"

		nameString = msg.getString("Name");
		sizeString = msg.getString("Size");
		typeString = msg.getString("Type");
		statusString = msg.getString("Status");
		lastModifiedString = msg.getString("LastModified");

		readString = msg.getString("Read");
		writeString = msg.getString("Write");
		readWriteString = msg.getString("ReadWrite");

	}


/*****************************************************************************/


	/**
	 * Returns whether or not this filename contains wildcards, depending on
	 * the OS on which we're running.
	 *
	 * @param filename The filename to check for wildcards.
	 * @return Whether or not the file name contained wildcards.
	 */
	private static boolean isGlobPattern(String filename) {
		return ((File.separatorChar == '\\' && filename.indexOf('*') >= 0)
				|| (File.separatorChar == '/' && (filename.indexOf('*') >= 0
				|| filename.indexOf('?') >= 0
				|| filename.indexOf('[') >= 0)));
	}


/*****************************************************************************/


	/**
	 * Returns whether or not multi-selection is enabled.
	 *
	 * @return Whether or not multi-selection is enabled.
	 * @see #setMultiSelectionEnabled
	 */
	public final boolean isMultiSelectionEnabled() {
		return multiSelectionEnabled;
	}


/*****************************************************************************/


	/**
	 * Returns whether or not a file should be underlined when displayed by
	 * a view of this file chooser.
	 *
	 * @param file A file.
	 * @return Whether or not <code>file</code> should be underlined by the
	 *         view.
	 */
	public boolean isUnderlinedFile(File file) {
		int num = underlinedFiles!=null ? underlinedFiles.length : 0;
		for (int i=0; i<num; i++)
			if (file.equals(underlinedFiles[i]))
				return true;
		return false;
	}


/*****************************************************************************/


	/**
	 * Ensures that the "File Filter" combo box contains all file filters
	 * known by this file dialog.
	 */
	private void populatefilterComboBox() {
		filterComboBox.removeAllItems();
		int max = fileFilters.size();
		for (int i=0; i<max; i++)
			filterComboBox.addItem(fileFilters.get(i));
	}


/*****************************************************************************/


	/**
	 * Populates the "Look in" combo box with proper values for the current
	 * directory.
	 */
	private void populateLookInComboBox() {

		// Add all of the roots.
		lookInComboBox.removeAllItems();
		RootManager rm = RootManager.getInstance();
		int j = 1;
		for (Iterator i=rm.iterator(); i.hasNext(); ) {

			File root = (File)i.next();

			lookInComboBox.addItem(root);

			// If the "current directory" is under this root, add all
			// dirs in the path leading up to it.
			File currentDirectoryRoot = rm.getRootForFile(currentDirectory);
			if (currentDirectoryRoot.equals(root)) {
				File temp = currentDirectory;
				// We check for null also because, for example, in Windows,
				// the "Desktop" folder is considered a root (and has no
				// parent), but our loop finds the "root" to be C:\.
				while (temp!=null && !temp.equals(currentDirectoryRoot)) {
					lookInComboBox.insertItemAt(temp, j);
					temp = temp.getParentFile();
				}
			}

			j++;

		}

		lookInComboBox.setSelectedItem(currentDirectory);

		lookInRenderer.recalculateDepths();

	}


/*****************************************************************************/


	/**
	 * If the GUI has been initialized, this sets the encoding combo box to
	 * display the proper value.
	 */
	protected void refreshEncodingComboBox() {

		if (!guiInitialized)
			return;

		Charset cs1 = Charset.forName(encoding);
		int count = encodingComboBox.getItemCount();
		for (int i=0; i<count; i++) {
			String item = (String)encodingComboBox.getItemAt(i);
			Charset cs2 = Charset.forName(item);
			if (cs1.equals(cs2)) {
				encodingComboBox.setSelectedIndex(i);
				return;
			}
		}

		// Encoding not found: select default.
		String defaultEncoding = getDefaultEncoding();
		cs1 = Charset.forName(defaultEncoding);