vfsbrowser.java

Linux下面最好用的程序、文本编辑工具之一。

		// and before the path is set.
		if(path != null)
		{
			try
			{
				maybeReloadRequestRunning = true;

				browserView.maybeReloadDirectory(dir);
			}
			finally
			{
				VFSManager.runInAWTThread(new Runnable()
				{
					public void run()
					{
						maybeReloadRequestRunning = false;
					}
				});
			}
		}
	} //}}}

	//}}}

	//{{{ Inner classes

	//{{{ ActionHandler class
	class ActionHandler implements ActionListener
	{
		public void actionPerformed(ActionEvent evt)
		{
			Object source = evt.getSource();
			if(source == pathField || source == filterField
				|| source == filterCheckbox)
			{
				updateFilterEnabled();

				String path = pathField.getText();
				if(path != null)
					setDirectory(path);

				browserView.focusOnFileView();
			}
		}
	} //}}}

	//{{{ CommandsMenuButton class
	class CommandsMenuButton extends JButton
	{
		//{{{ CommandsMenuButton constructor
		CommandsMenuButton()
		{
			setText(jEdit.getProperty("vfs.browser.commands.label"));
			setIcon(GUIUtilities.loadIcon("ToolbarMenu.gif"));
			setHorizontalTextPosition(SwingConstants.LEADING);

			popup = new BrowserCommandsMenu(VFSBrowser.this,null);

			CommandsMenuButton.this.setRequestFocusEnabled(false);
			setMargin(new Insets(1,1,1,1));
			CommandsMenuButton.this.addMouseListener(new MouseHandler());

			if(OperatingSystem.isMacOSLF())
				CommandsMenuButton.this.putClientProperty("JButton.buttonType","toolbar");
		} //}}}

		BrowserCommandsMenu popup;

		//{{{ MouseHandler class
		class MouseHandler extends MouseAdapter
		{
			public void mousePressed(MouseEvent evt)
			{
				if(!popup.isVisible())
				{
					popup.update();

					GUIUtilities.showPopupMenu(
						popup,CommandsMenuButton.this,0,
						CommandsMenuButton.this.getHeight(),
						false);
				}
				else
				{
					popup.setVisible(false);
				}
			}
		} //}}}
	} //}}}

	//{{{ PluginsMenuButton class
	class PluginsMenuButton extends JButton
	{
		//{{{ PluginsMenuButton constructor
		PluginsMenuButton()
		{
			setText(jEdit.getProperty("vfs.browser.plugins.label"));
			setIcon(GUIUtilities.loadIcon("ToolbarMenu.gif"));
			setHorizontalTextPosition(SwingConstants.LEADING);

			PluginsMenuButton.this.setRequestFocusEnabled(false);
			setMargin(new Insets(1,1,1,1));
			PluginsMenuButton.this.addMouseListener(new MouseHandler());

			if(OperatingSystem.isMacOSLF())
				PluginsMenuButton.this.putClientProperty("JButton.buttonType","toolbar");
		} //}}}

		JPopupMenu popup;

		//{{{ updatePopupMenu() method
		void updatePopupMenu()
		{
			popup = null;
		} //}}}

		//{{{ createPopupMenu() method
		private void createPopupMenu()
		{
			if(popup != null)
				return;

			popup = new JPopupMenu();
			ActionHandler actionHandler = new ActionHandler();

			if(getMode() == BROWSER)
			{
				popup.add(GUIUtilities.loadMenuItem("plugin-manager",false));
				popup.add(GUIUtilities.loadMenuItem("plugin-options",false));
				popup.addSeparator();
			}
			else
				/* we're in a modal dialog */;

			ArrayList vec = new ArrayList();

			//{{{ old API
			Enumeration e = VFSManager.getFilesystems();

			while(e.hasMoreElements())
			{
				VFS vfs = (VFS)e.nextElement();
				if((vfs.getCapabilities() & VFS.BROWSE_CAP) == 0)
					continue;

				JMenuItem menuItem = new JMenuItem(jEdit.getProperty(
					"vfs." + vfs.getName() + ".label"));
				menuItem.setActionCommand(vfs.getName());
				menuItem.addActionListener(actionHandler);
				vec.add(menuItem);
			} //}}}

			//{{{ new API
			EditPlugin[] plugins = jEdit.getPlugins();
			for(int i = 0; i < plugins.length; i++)
			{
				JMenuItem menuItem = plugins[i].createBrowserMenuItems();
				if(menuItem != null)
					vec.add(menuItem);
			} //}}}

			if(vec.size() != 0)
			{
				MiscUtilities.quicksort(vec,new MiscUtilities.MenuItemCompare());
				for(int i = 0; i < vec.size(); i++)
					popup.add((JMenuItem)vec.get(i));
			}
			else
			{
				JMenuItem mi = new JMenuItem(jEdit.getProperty(
					"vfs.browser.plugins.no-plugins.label"));
				mi.setEnabled(false);
				popup.add(mi);
			}
		} //}}}

		//{{{ ActionHandler class
		class ActionHandler implements ActionListener
		{
			public void actionPerformed(ActionEvent evt)
			{
				VFS vfs = VFSManager.getVFSByName(evt.getActionCommand());
				String directory = vfs.showBrowseDialog(null,
					VFSBrowser.this);
				if(directory != null)
					setDirectory(directory);
			}
		} //}}}

		//{{{ MouseHandler class
		class MouseHandler extends MouseAdapter
		{
			public void mousePressed(MouseEvent evt)
			{
				createPopupMenu();

				if(!popup.isVisible())
				{
					GUIUtilities.showPopupMenu(
						popup,PluginsMenuButton.this,0,
						PluginsMenuButton.this.getHeight(),
						false);
				}
				else
				{
					popup.setVisible(false);
				}
			}
		} //}}}
	} //}}}

	//{{{ FavoritesMenuButton class
	class FavoritesMenuButton extends JButton
	{
		//{{{ FavoritesMenuButton constructor
		FavoritesMenuButton()
		{
			setText(jEdit.getProperty("vfs.browser.favorites.label"));
			setIcon(GUIUtilities.loadIcon("ToolbarMenu.gif"));
			setHorizontalTextPosition(SwingConstants.LEADING);

			FavoritesMenuButton.this.setRequestFocusEnabled(false);
			setMargin(new Insets(1,1,1,1));
			FavoritesMenuButton.this.addMouseListener(new MouseHandler());

			if(OperatingSystem.isMacOSLF())
				FavoritesMenuButton.this.putClientProperty("JButton.buttonType","toolbar");
		} //}}}

		JPopupMenu popup;

		//{{{ createPopupMenu() method
		void createPopupMenu()
		{
			popup = new JPopupMenu();
			ActionHandler actionHandler = new ActionHandler();

			JMenuItem mi = new JMenuItem(
				jEdit.getProperty(
				"vfs.browser.favorites"
				+ ".add-to-favorites.label"));
			mi.setActionCommand("add-to-favorites");
			mi.addActionListener(actionHandler);
			popup.add(mi);

			mi = new JMenuItem(
				jEdit.getProperty(
				"vfs.browser.favorites"
				+ ".edit-favorites.label"));
			mi.setActionCommand("dir@favorites:");
			mi.addActionListener(actionHandler);
			popup.add(mi);

			popup.addSeparator();

			VFS.DirectoryEntry[] favorites
				= FavoritesVFS.getFavorites();
			if(favorites.length == 0)
			{
				mi = new JMenuItem(
					jEdit.getProperty(
					"vfs.browser.favorites"
					+ ".no-favorites.label"));
				mi.setEnabled(false);
				popup.add(mi);
			}
			else
			{
				MiscUtilities.quicksort(favorites,
					new VFS.DirectoryEntryCompare(
					sortMixFilesAndDirs,
					sortIgnoreCase));
				for(int i = 0; i < favorites.length; i++)
				{
					VFS.DirectoryEntry favorite
						= favorites[i];
					mi = new JMenuItem(favorite.path);
					mi.setIcon(FileCellRenderer
						.getIconForFile(
						favorite,false));
					String cmd = (favorite.type ==
						VFS.DirectoryEntry.FILE
						? "file@" : "dir@")
						+ favorite.path;
					mi.setActionCommand(cmd);
					mi.addActionListener(actionHandler);
					popup.add(mi);
				}
			}
		} //}}}

		//{{{ ActionHandler class
		class ActionHandler implements ActionListener
		{
			public void actionPerformed(ActionEvent evt)
			{
				String actionCommand = evt.getActionCommand();
				if(actionCommand.equals("add-to-favorites"))
				{
					// if any directories are selected, add
					// them, otherwise add current directory
					VFS.DirectoryEntry[] selected = getSelectedFiles();
					if(selected == null || selected.length == 0)
					{
						if(path.equals(FavoritesVFS.PROTOCOL + ":"))
						{
							GUIUtilities.error(VFSBrowser.this,
								"vfs.browser.recurse-favorites",
								null);
						}
						else
						{
							FavoritesVFS.addToFavorites(path,
								VFS.DirectoryEntry.DIRECTORY);
						}
					}
					else
					{
						for(int i = 0; i < selected.length; i++)
						{
							VFS.DirectoryEntry file
								= selected[i];
							FavoritesVFS.addToFavorites(file.path,file.type);
						}
					}
				}
				else if(actionCommand.startsWith("dir@"))
				{
					setDirectory(actionCommand.substring(4));
				}
				else if(actionCommand.startsWith("file@"))
				{
					switch(getMode())
					{
					case BROWSER:
						jEdit.openFile(view,actionCommand.substring(5));
						break;
					default:
						locateFile(actionCommand.substring(5));
						break;
					}
				}
			}
		} //}}}

		//{{{ MouseHandler class
		class MouseHandler extends MouseAdapter
		{
			public void mousePressed(MouseEvent evt)
			{
				if(popup != null && popup.isVisible())
				{
					popup.setVisible(false);
					return;
				}

				if(popup == null)
					createPopupMenu();

				GUIUtilities.showPopupMenu(
					popup,FavoritesMenuButton.this,0,
					FavoritesMenuButton.this.getHeight(),
					false);
			}
		} //}}}
	} //}}}

	//{{{ DirectoryLoadedAWTRequest class
	class DirectoryLoadedAWTRequest implements Runnable
	{
		Object node;
		Object[] loadInfo;

		DirectoryLoadedAWTRequest(Object node, Object[] loadInfo)
		{
			this.node = node;
			this.loadInfo = loadInfo;
		}

		public void run()
		{
			String path = (String)loadInfo[0];
			if(path == null)
			{
				// there was an error
				return;
			}

			VFS.DirectoryEntry[] list = (VFS.DirectoryEntry[])
				loadInfo[1];

			if(node == null)
			{
				// This is the new, canonical path
				VFSBrowser.this.path = path;
				if(!pathField.getText().equals(path))
					pathField.setText(path);
				if(path.endsWith("/") ||
					path.endsWith(File.separator))
				{
					// ensure consistent history;
					// eg we don't want both
					// foo/ and foo
					path = path.substring(0,
						path.length() - 1);
				}

				HistoryModel.getModel("vfs.browser.path")
					.addItem(path);
			}

			boolean filterEnabled = filterCheckbox.isSelected();

			ArrayList directoryVector = new ArrayList();

			int directories = 0;
			int files = 0;
			int invisible = 0;

			if(list != null)
			{
				for(int i = 0; i < list.length; i++)
				{
					VFS.DirectoryEntry file = list[i];
					if(file.hidden && !showHiddenFiles)
					{
						invisible++;
						continue;
					}

					if(file.type == VFS.DirectoryEntry.FILE
						&& filterEnabled
						&& filenameFilter != null
						&& !filenameFilter.isMatch(file.name))
					{
						invisible++;
						continue;
					}

					if(file.type == VFS.DirectoryEntry.FILE)
						files++;
					else
						directories++;

					directoryVector.add(file);
				}

				MiscUtilities.quicksort(directoryVector,
					new VFS.DirectoryEntryCompare(
					sortMixFilesAndDirs,
					sortIgnoreCase));
			}

			browserView.directoryLoaded(node,path,
				directoryVector);

			// to notify listeners that any existing
			// selection has been deactivated

			// turns out under some circumstances this
			// method can switch the current buffer in
			// BROWSER mode.

			// in any case, this is only needed for the
			// directory chooser (why?), so we add a
			// check. otherwise poor Rick will go insane.
			if(mode == CHOOSE_DIRECTORY_DIALOG)
				filesSelected();
		}

		public String toString()
		{
			return (String)loadInfo[0];
		}
	} //}}}

	//{{{ BrowserActionContext class
	static class BrowserActionContext extends ActionContext
	{
		/**
		 * If event source hierarchy contains a VFSDirectoryEntryTable,
		 * this is the currently selected files there. Otherwise, this
		 * is the currently selected item in the parent directory list.
		 */
		private VFS.DirectoryEntry[] getSelectedFiles(EventObject evt,
			VFSBrowser browser)
		{
			Component source = (Component)evt.getSource();

			if(GUIUtilities.getComponentParent(source,JList.class)
				!= null)
			{
				Object[] selected = browser.getBrowserView()
					.getParentDirectoryList()
					.getSelectedValues();
				VFS.DirectoryEntry[] returnValue
					= new VFS.DirectoryEntry[
					selected.length];
				System.arraycopy(selected,0,returnValue,0,
					selected.length);
				return returnValue;
			}
			else
			{
				return browser.getSelectedFiles();
			}
		}

		public void invokeAction(EventObject evt, EditAction action)
		{
			VFSBrowser browser = (VFSBrowser)
				GUIUtilities.getComponentParent(
				(Component)evt.getSource(),
				VFSBrowser.class);

			VFS.DirectoryEntry[] files = getSelectedFiles(evt,
				browser);

			// in the future we will want something better,
			// eg. having an 'evt' object passed to
			// EditAction.invoke().

			// for now, since all browser actions are
			// written in beanshell we set the 'browser'
			// variable directly.
			NameSpace global = BeanShell.getNameSpace();
			try
			{
				global.setVariable("browser",browser);
				global.setVariable("files",files);

				View view = browser.getView();
				// I guess ideally all browsers
				// should have views, but since they
				// don't, we just use the active view
				// in that case, since some actions
				// depend on a view being there and
				// I don't want to add checks to
				// them all
				if(view == null)
					view = jEdit.getActiveView();
				action.invoke(view);
			}
			catch(UtilEvalError err)
			{
				Log.log(Log.ERROR,this,err);
			}
			finally
			{
				try
				{
					global.setVariable("browser",null);
					global.setVariable("files",null);
				}
				catch(UtilEvalError err)
				{
					Log.log(Log.ERROR,this,err);
				}
			}
		}
	} //}}}

	//}}}
}