diff options
Diffstat (limited to 'examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/fileviewer/FileViewer.java')
| -rwxr-xr-x | examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/fileviewer/FileViewer.java | 1728 |
1 files changed, 0 insertions, 1728 deletions
diff --git a/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/fileviewer/FileViewer.java b/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/fileviewer/FileViewer.java deleted file mode 100755 index 5494a3e186..0000000000 --- a/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/fileviewer/FileViewer.java +++ /dev/null @@ -1,1728 +0,0 @@ -package org.eclipse.swt.examples.fileviewer;
-
/*
- * (c) Copyright IBM Corp. 2000, 2001.
- * All Rights Reserved
- */
-
-import org.eclipse.swt.*;
-import org.eclipse.swt.custom.*;
-import org.eclipse.swt.dnd.*;
-import org.eclipse.swt.events.*;
-import org.eclipse.swt.graphics.*;
-import org.eclipse.swt.layout.*;
-import org.eclipse.swt.program.*;
-import org.eclipse.swt.widgets.*;
-
-import java.io.*;
-import java.text.*;
-import java.util.*;
-
/**
- * File Viewer example
- */
-public class FileViewer {
- private static ResourceBundle resourceBundle;
-
private final static String DRIVE_A = "a:" + File.separator;
- private final static String DRIVE_B = "b:" + File.separator;
-
- /* UI elements */
- private Display display;
- private Shell shell;
- private ToolBar toolBar;
-
- private Label numObjectsLabel;
- private Label diskSpaceLabel;
-
- private File currentDirectory = null;
- private boolean initial = true;
-
- /* Drag and drop optimizations */
- private boolean isDragging = false; // if this app is dragging
- private boolean isDropping = false; // if this app is dropping
-
- private File[] processedDropFiles = null; // so Drag only deletes what it needs to
- private File[] deferredRefreshFiles = null; // to defer notifyRefreshFiles while we do DND
- private boolean deferredRefreshRequested = false; // to defer notifyRefreshFiles while we do DND
- private ProgressDialog progressDialog = null; // progress dialog for locally-initiated operations
-
- /* Combo view */
- private static final String COMBODATA_ROOTS = "Combo.roots";
- // File[]: Array of files whose paths are currently displayed in the combo
- private static final String COMBODATA_LASTTEXT = "Combo.lastText";
- // String: Previous selection text string
-
- private Combo combo;
-
- /* Tree view */
- private static final String TREEITEMDATA_FILE = "TreeItem.file";
- // File: File associated with tree item
- private static final String TREEITEMDATA_IMAGEEXPANDED = "TreeItem.imageExpanded";
- // Image: shown when item is expanded
- private static final String TREEITEMDATA_IMAGECOLLAPSED = "TreeItem.imageCollapsed";
- // Image: shown when item is collapsed
- private static final String TREEITEMDATA_STUB = "TreeItem.stub";
- // Object: if not present or null then the item has not been populated
-
- private Tree tree;
- private Label treeScopeLabel;
-
- /* Table view */
- private static final DateFormat dateFormat = DateFormat.getDateTimeInstance(
- DateFormat.MEDIUM, DateFormat.MEDIUM);
- private static final String TABLEITEMDATA_FILE = "TableItem.file";
- // File: File associated with table row
- private static final String TABLEDATA_DIR = "Table.dir";
- // File: Currently visible directory
- private static final int[] tableWidths = new int[] {150, 60, 75, 150};
- private final String[] tableTitles = new String [] {
- FileViewer.getResourceString("table.Name.title"),
- FileViewer.getResourceString("table.Size.title"),
- FileViewer.getResourceString("table.Type.title"),
- FileViewer.getResourceString("table.Modified.title")
- };
- private Table table;
- private Label tableContentsOfLabel;
-
- /* Table update worker */
- // Control data
- private final Object workerLock = new Object();
- // Lock for all worker control data and state
- private volatile Thread workerThread = null;
- // The worker's thread
- private volatile boolean workerStopped = false;
- // True if the worker must exit on completion of the current cycle
- private volatile boolean workerCancelled = false;
- // True if the worker must cancel its operations prematurely perhaps due to a state update
-
- // Worker state information -- this is what gets synchronized by an update
- private volatile File workerStateDir = null;
-
- // State information to use for the next cycle
- private volatile File workerNextDir = null;
-
- /* Simulate only flag */
- // when true, disables actual filesystem manipulations and outputs results to standard out
- private boolean simulateOnly = true;
-
- /**
- * Runs main program.
- */
- public static void main (String [] args) {
- if (resourceBundle == null)
- resourceBundle = ResourceBundle.getBundle("examples_fileviewer");
- new FileViewer().open();
- }
-
- /**
- * Opens the main program.
- */
- void open() {
- // Create the window
- display = new Display();
- IconCache.initResources(display);
- shell = new Shell();
- createShellContents();
- notifyRefreshFiles(null);
- shell.open();
- // Event loop
- while (! shell.isDisposed()) {
- if (! display.readAndDispatch()) display.sleep();
- }
- // Cleanup
- workerStop();
- IconCache.freeResources();
- display.dispose();
- }
-
/**
- * Closes the main program.
- */
- void close() {
- workerStop(); // be polite
- shell.close();
- }
-
- /**
- * Returns a string from the resource bundle.
- * We don't want to crash because of a missing String.
- * Returns the key if not found.
- */
- static String getResourceString(String key) {
- try {
- return resourceBundle.getString(key);
- } catch (MissingResourceException e) {
- return key;
- } catch (NullPointerException e) {
- return "!" + key + "!";
- }
- }
-
- /**
- * Returns a string from the resource bundle and binds it
- * with the given arguments. If the key is not found,
- * return the key.
- */
- static String getResourceString(String key, Object[] args) {
- try {
- return MessageFormat.format(getResourceString(key), args);
- } catch (MissingResourceException e) {
- return key;
- } catch (NullPointerException e) {
- return "!" + key + "!";
- }
- }
-
- /**
- * Construct the UI
- *
- * @param container the ShellContainer managing the Shell we are rendering inside
- */
- private void createShellContents() {
- shell.setText(getResourceString("Title", new Object[] { "" }));
- shell.setImage(IconCache.stockImages[IconCache.shellIcon]);
- Menu bar = new Menu(shell, SWT.BAR);
- shell.setMenuBar(bar);
- createFileMenu(bar);
- createHelpMenu(bar);
-
- GridLayout gridLayout = new GridLayout();
- gridLayout.numColumns = 3;
- gridLayout.marginHeight = gridLayout.marginWidth = 0;
- shell.setLayout(gridLayout);
-
- GridData gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
- gridData.widthHint = 185;
- createComboView(shell, gridData);
- gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
- gridData.horizontalSpan = 2;
- createToolBar(shell, gridData);
-
- SashForm sashForm = new SashForm(shell, SWT.NONE);
- sashForm.setOrientation(SWT.HORIZONTAL);
- gridData = new GridData(GridData.FILL_HORIZONTAL | GridData.FILL_VERTICAL);
- gridData.horizontalSpan = 3;
- sashForm.setLayoutData(gridData);
- createTreeView(sashForm);
- createTableView(sashForm);
- sashForm.setWeights(new int[] { 2, 5 });
-
- numObjectsLabel = new Label(shell, SWT.BORDER);
- gridData = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL);
- gridData.widthHint = 185;
- numObjectsLabel.setLayoutData(gridData);
-
- diskSpaceLabel = new Label(shell, SWT.BORDER);
- gridData = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL);
- gridData.horizontalSpan = 2;
- diskSpaceLabel.setLayoutData(gridData);
- }
-
- /**
- * Creates the File Menu.
- *
- * @param parent the parent menu
- */
- private void createFileMenu(Menu parent) {
- Menu menu = new Menu(parent);
- MenuItem header = new MenuItem(parent, SWT.CASCADE);
- header.setText(getResourceString("menu.File.text"));
- header.setMenu(menu);
-
- final MenuItem simulateItem = new MenuItem(menu, SWT.CHECK);
- simulateItem.setText(getResourceString("menu.File.SimulateOnly.text"));
- simulateItem.setSelection(simulateOnly);
- simulateItem.addSelectionListener(new SelectionAdapter () {
- public void widgetSelected(SelectionEvent e) {
- simulateOnly = simulateItem.getSelection();
- }
- });
-
- MenuItem item = new MenuItem(menu, SWT.PUSH);
- item.setText(getResourceString("menu.File.Close.text"));
- item.addSelectionListener(new SelectionAdapter () {
- public void widgetSelected(SelectionEvent e) {
- close();
- }
- });
- }
-
- /**
- * Creates the Help Menu.
- *
- * @param parent the parent menu
- */
- private void createHelpMenu(Menu parent) {
- Menu menu = new Menu(parent);
- MenuItem header = new MenuItem(parent, SWT.CASCADE);
- header.setText(getResourceString("menu.Help.text"));
- header.setMenu(menu);
-
- MenuItem item = new MenuItem(menu, SWT.PUSH);
- item.setText(getResourceString("menu.Help.About.text"));
- item.addSelectionListener(new SelectionAdapter () {
- public void widgetSelected(SelectionEvent e) {
- MessageBox box = new MessageBox(shell, SWT.ICON_INFORMATION | SWT.OK);
- box.setText(getResourceString("dialog.About.title"));
- box.setMessage(getResourceString("dialog.About.description",
- new Object[] { System.getProperty("os.name") }));
- box.open();
- }
- });
- }
-
- /**
- * Creates the toolbar
- *
- * @param shell the shell on which to attach the toolbar
- * @param layoutData the layout data
- */
- private void createToolBar(final Shell shell, Object layoutData) {
- toolBar = new ToolBar(shell, SWT.NULL);
- toolBar.setLayoutData(layoutData);
- ToolItem item = new ToolItem(toolBar, SWT.SEPARATOR);
- item = new ToolItem(toolBar, SWT.PUSH);
- item.setImage(IconCache.stockImages[IconCache.cmdParent]);
- item.setToolTipText(getResourceString("tool.Parent.tiptext"));
- item.addSelectionListener(new SelectionAdapter () {
- public void widgetSelected(SelectionEvent e) {
- doParent();
- }
- });
- item = new ToolItem(toolBar, SWT.PUSH);
- item.setImage(IconCache.stockImages[IconCache.cmdRefresh]);
- item.setToolTipText(getResourceString("tool.Refresh.tiptext"));
- item.addSelectionListener(new SelectionAdapter () {
- public void widgetSelected(SelectionEvent e) {
- doRefresh();
- }
- });
- SelectionAdapter unimplementedListener = new SelectionAdapter() {
- public void widgetSelected(SelectionEvent e) {
- MessageBox box = new MessageBox(shell, SWT.ICON_INFORMATION | SWT.OK);
- box.setText(getResourceString("dialog.NotImplemented.title"));
- box.setMessage(getResourceString("dialog.ActionNotImplemented.description"));
- box.open();
- }
- };
-
- item = new ToolItem(toolBar, SWT.SEPARATOR);
- item = new ToolItem(toolBar, SWT.PUSH);
- item.setImage(IconCache.stockImages[IconCache.cmdCut]);
- item.setToolTipText(getResourceString("tool.Cut.tiptext"));
- item.addSelectionListener(unimplementedListener);
- item = new ToolItem(toolBar, SWT.PUSH);
- item.setImage(IconCache.stockImages[IconCache.cmdCopy]);
- item.setToolTipText(getResourceString("tool.Copy.tiptext"));
- item.addSelectionListener(unimplementedListener);
- item = new ToolItem(toolBar, SWT.PUSH);
- item.setImage(IconCache.stockImages[IconCache.cmdPaste]);
- item.setToolTipText(getResourceString("tool.Paste.tiptext"));
item.addSelectionListener(unimplementedListener);
-
- item = new ToolItem(toolBar, SWT.SEPARATOR);
- item = new ToolItem(toolBar, SWT.PUSH);
- item.setImage(IconCache.stockImages[IconCache.cmdDelete]);
- item.setToolTipText(getResourceString("tool.Delete.tiptext"));
- item.addSelectionListener(unimplementedListener);
- item = new ToolItem(toolBar, SWT.PUSH);
- item.setImage(IconCache.stockImages[IconCache.cmdRename]);
- item.setToolTipText(getResourceString("tool.Rename.tiptext"));
- item.addSelectionListener(unimplementedListener);
-
- item = new ToolItem(toolBar, SWT.SEPARATOR);
- item = new ToolItem(toolBar, SWT.PUSH);
- item.setImage(IconCache.stockImages[IconCache.cmdSearch]);
- item.setToolTipText(getResourceString("tool.Search.tiptext"));
- item.addSelectionListener(unimplementedListener);
- item = new ToolItem(toolBar, SWT.PUSH);
- item.setImage(IconCache.stockImages[IconCache.cmdPrint]);
- item.setToolTipText(getResourceString("tool.Print.tiptext"));
- item.addSelectionListener(unimplementedListener);
- }
-
- /**
- * Creates the combo box view.
- *
- * @param parent the parent control
- */
- private void createComboView(Composite parent, Object layoutData) {
- combo = new Combo(parent, SWT.NONE);
- combo.setLayoutData(layoutData);
- combo.addSelectionListener(new SelectionAdapter() {
- public void widgetSelected(SelectionEvent e) {
- final File[] roots = (File[]) combo.getData(COMBODATA_ROOTS);
- if (roots == null) return;
- int selection = combo.getSelectionIndex();
- if (selection >= 0 && selection < roots.length) {
- notifySelectedDirectory(roots[selection]);
- }
- }
- public void widgetDefaultSelected(SelectionEvent e) {
- final String lastText = (String) combo.getData(COMBODATA_LASTTEXT);
- String text = combo.getText();
- if (text == null) return;
- if (lastText != null && lastText.equals(text)) return;
- combo.setData(COMBODATA_LASTTEXT, text);
- notifySelectedDirectory(new File(text));
- }
- });
- }
-
- /**
- * Creates the file tree view.
- *
- * @param parent the parent control
- */
- private void createTreeView(Composite parent) {
- Composite composite = new Composite(parent, SWT.NONE);
- GridLayout gridLayout = new GridLayout();
- gridLayout.numColumns = 1;
- gridLayout.marginHeight = gridLayout.marginWidth = 2;
- gridLayout.horizontalSpacing = gridLayout.verticalSpacing = 0;
- composite.setLayout(gridLayout);
-
- treeScopeLabel = new Label(composite, SWT.BORDER);
- treeScopeLabel.setText(FileViewer.getResourceString("details.AllFolders.text"));
- treeScopeLabel.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL));
-
- tree = new Tree(composite, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.SINGLE);
- tree.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.FILL_VERTICAL));
-
- tree.addSelectionListener(new SelectionListener() {
- public void widgetSelected(SelectionEvent event) {
- final TreeItem[] selection = tree.getSelection();
- if (selection != null && selection.length != 0) {
- TreeItem item = selection[0];
- File file = (File) item.getData(TREEITEMDATA_FILE);
-
- notifySelectedDirectory(file);
- }
- }
- public void widgetDefaultSelected(SelectionEvent event) {
- final TreeItem[] selection = tree.getSelection();
- if (selection != null && selection.length != 0) {
- TreeItem item = selection[0];
- item.setExpanded(true);
- treeExpandItem(item);
- }
- }
- });
- tree.addTreeListener(new TreeAdapter() {
- public void treeExpanded(TreeEvent event) {
- final TreeItem item = (TreeItem) event.item;
- final Image image = (Image) item.getData(TREEITEMDATA_IMAGEEXPANDED);
- if (image != null) item.setImage(image);
- treeExpandItem(item);
- }
- public void treeCollapsed(TreeEvent event) {
- final TreeItem item = (TreeItem) event.item;
- final Image image = (Image) item.getData(TREEITEMDATA_IMAGECOLLAPSED);
- if (image != null) item.setImage(image);
- }
- });
- createTreeDragSource(tree);
- createTreeDropTarget(tree);
- }
-
- /**
- * Creates the Drag & Drop DragSource for items being dragged from the tree.
- *
- * @return the DragSource for the tree
- */
- private DragSource createTreeDragSource(final Tree tree){
- DragSource dragSource = new DragSource(tree, DND.DROP_MOVE | DND.DROP_COPY);
- dragSource.setTransfer(new Transfer[] { FileTransfer.getInstance() });
- dragSource.addDragListener(new DragSourceListener() {
- TreeItem[] dndSelection = null;
- String[] sourceNames = null;
- public void dragStart(DragSourceEvent event){
- dndSelection = tree.getSelection();
- sourceNames = null;
- event.doit = dndSelection.length > 0;
- isDragging = true;
- processedDropFiles = null;
- }
- public void dragFinished(DragSourceEvent event){
- dragSourceHandleDragFinished(event, sourceNames);
- dndSelection = null;
- sourceNames = null;
- isDragging = false;
- processedDropFiles = null;
- handleDeferredRefresh();
- }
- public void dragSetData(DragSourceEvent event){
- if (dndSelection == null || dndSelection.length == 0) return;
- if (! FileTransfer.getInstance().isSupportedType(event.dataType)) return;
-
- sourceNames = new String[dndSelection.length];
- for (int i = 0; i < dndSelection.length; i++) {
- File file = (File) dndSelection[i].getData(TREEITEMDATA_FILE);
- sourceNames[i] = file.getAbsolutePath();
- }
- event.data = sourceNames;
- }
- });
- return dragSource;
- }
-
- /**
- * Creates the Drag & Drop DropTarget for items being dropped onto the tree.
- *
- * @return the DropTarget for the tree
- */
- private DropTarget createTreeDropTarget(final Tree tree) {
- DropTarget dropTarget = new DropTarget(tree, DND.DROP_MOVE | DND.DROP_COPY);
- dropTarget.setTransfer(new Transfer[] { FileTransfer.getInstance() });
- dropTarget.addDropListener(new DropTargetAdapter() {
- public void dragEnter(DropTargetEvent event) {
- isDropping = true;
- }
- public void dragLeave(DropTargetEvent event) {
- isDropping = false;
- handleDeferredRefresh();
- }
- public void dragOver(DropTargetEvent event) {
- dropTargetValidate(event, getTargetFile(event));
- event.feedback |= DND.FEEDBACK_EXPAND | DND.FEEDBACK_SCROLL;
- }
- public void drop(DropTargetEvent event) {
- File targetFile = getTargetFile(event);
- if (dropTargetValidate(event, targetFile))
- dropTargetHandleDrop(event, targetFile);
- }
- private File getTargetFile(DropTargetEvent event) {
- // Determine the target File for the drop
- TreeItem item = tree.getItem(tree.toControl(new Point(event.x, event.y)));
- File targetFile = null;
- if (item != null) {
- // We are over a particular item in the tree, use the item's file
- targetFile = (File) item.getData(TREEITEMDATA_FILE);
- }
- return targetFile;
- }
- });
- return dropTarget;
- }
-
- /**
- * Handles expand events on a tree item.
- *
- * @param item the TreeItem to fill in
- */
- private void treeExpandItem(TreeItem item) {
- shell.setCursor(IconCache.stockCursors[IconCache.cursorWait]);
- final Object stub = item.getData(TREEITEMDATA_STUB);
- if (stub == null) treeRefreshItem(item, true);
- shell.setCursor(IconCache.stockCursors[IconCache.cursorDefault]);
- }
-
- /**
- * Traverse the entire tree and update only what has changed.
- *
- * @param roots the root directory listing
- */
- private void treeRefresh(File[] masterFiles) {
- TreeItem[] items = tree.getItems();
- int masterIndex = 0;
- int itemIndex = 0;
- for (int i = 0; i < items.length; ++i) {
- final TreeItem item = items[i];
- final File itemFile = (File) item.getData(TREEITEMDATA_FILE);
- if ((itemFile == null) || (masterIndex == masterFiles.length)) {
- // remove bad item or placeholder
- item.dispose();
- continue;
- }
- final File masterFile = masterFiles[masterIndex];
- int compare = compareFiles(masterFile, itemFile);
- if (compare == 0) {
- // same file, update it
- treeRefreshItem(item, false);
- ++itemIndex;
- ++masterIndex;
- } else if (compare < 0) {
- // should appear before file, insert it
- TreeItem newItem = new TreeItem(tree, SWT.NULL, itemIndex);
- treeInitVolume(newItem, masterFile);
- new TreeItem(newItem, SWT.NULL); // placeholder child item to get "expand" button
- ++itemIndex;
- ++masterIndex;
- --i;
- } else {
- // should appear after file, delete stale item
- item.dispose();
- }
- }
- for (;masterIndex < masterFiles.length; ++masterIndex) {
- final File masterFile = masterFiles[masterIndex];
- TreeItem newItem = new TreeItem(tree, SWT.NULL);
- treeInitVolume(newItem, masterFile);
- new TreeItem(newItem, SWT.NULL); // placeholder child item to get "expand" button
- }
- }
-
- /**
- * Traverse an item in the tree and update only what has changed.
- *
- * @param dirItem the tree item of the directory
- * @param forcePopulate true iff we should populate non-expanded items as well
- */
- private void treeRefreshItem(TreeItem dirItem, boolean forcePopulate) {
- final File dir = (File) dirItem.getData(TREEITEMDATA_FILE);
-
- if (! forcePopulate && ! dirItem.getExpanded()) {
- // Refresh non-expanded item
- if (dirItem.getData(TREEITEMDATA_STUB) != null) {
- treeItemRemoveAll(dirItem);
- new TreeItem(dirItem, SWT.NULL); // placeholder child item to get "expand" button
- dirItem.setData(TREEITEMDATA_STUB, null);
- }
- return;
- }
- // Refresh expanded item
- dirItem.setData(TREEITEMDATA_STUB, this); // clear stub flag
-
- /* Get directory listing */
- File[] subFiles = (dir != null) ? FileViewer.getDirectoryList(dir) : null;
- if (subFiles == null || subFiles.length == 0) {
- /* Error or no contents */
- treeItemRemoveAll(dirItem);
- dirItem.setExpanded(false);
- return;
- }
-
- /* Refresh sub-items */
- TreeItem[] items = dirItem.getItems();
- final File[] masterFiles = subFiles;
- int masterIndex = 0;
- int itemIndex = 0;
- File masterFile = null;
- for (int i = 0; i < items.length; ++i) {
- while ((masterFile == null) && (masterIndex < masterFiles.length)) {
- masterFile = masterFiles[masterIndex++];
- if (! masterFile.isDirectory()) masterFile = null;
- }
-
- final TreeItem item = items[i];
- final File itemFile = (File) item.getData(TREEITEMDATA_FILE);
- if ((itemFile == null) || (masterFile == null)) {
- // remove bad item or placeholder
- item.dispose();
- continue;
- }
- int compare = compareFiles(masterFile, itemFile);
- if (compare == 0) {
- // same file, update it
- treeRefreshItem(item, false);
- masterFile = null;
- ++itemIndex;
- } else if (compare < 0) {
- // should appear before file, insert it
- TreeItem newItem = new TreeItem(dirItem, SWT.NULL, itemIndex);
- treeInitFolder(newItem, masterFile);
- new TreeItem(newItem, SWT.NULL); // add a placeholder child item so we get the "expand" button
- masterFile = null;
- ++itemIndex;
- --i;
- } else {
- // should appear after file, delete stale item
- item.dispose();
- }
- }
- while ((masterFile != null) || (masterIndex < masterFiles.length)) {
- if (masterFile != null) {
- TreeItem newItem = new TreeItem(dirItem, SWT.NULL);
- treeInitFolder(newItem, masterFile);
- new TreeItem(newItem, SWT.NULL); // add a placeholder child item so we get the "expand" button
- if (masterIndex == masterFiles.length) break;
- }
- masterFile = masterFiles[masterIndex++];
- if (! masterFile.isDirectory()) masterFile = null;
- }
- }
-
- /**
- * Foreign method: removes all children of a TreeItem.
- * @param treeItem the TreeItem
- */
- private static void treeItemRemoveAll(TreeItem treeItem) {
- final TreeItem[] children = treeItem.getItems();
- for (int i = 0; i < children.length; ++i) {
- children[i].dispose();
- }
- }
-
- /**
- * Initializes a folder item.
- *
- * @param item the TreeItem to initialize
- * @param folder the File associated with this TreeItem
- */
- private void treeInitFolder(TreeItem item, File folder) {
- item.setText(folder.getName());
- item.setImage(IconCache.stockImages[IconCache.iconClosedFolder]);
- item.setData(TREEITEMDATA_FILE, folder);
- item.setData(TREEITEMDATA_IMAGEEXPANDED, IconCache.stockImages[IconCache.iconOpenFolder]);
- item.setData(TREEITEMDATA_IMAGECOLLAPSED, IconCache.stockImages[IconCache.iconClosedFolder]);
- }
-
- /**
- * Initializes a volume item.
- *
- * @param item the TreeItem to initialize
- * @param volume the File associated with this TreeItem
- */
- private void treeInitVolume(TreeItem item, File volume) {
- item.setText(volume.getPath());
- item.setImage(IconCache.stockImages[IconCache.iconClosedDrive]);
- item.setData(TREEITEMDATA_FILE, volume);
- item.setData(TREEITEMDATA_IMAGEEXPANDED, IconCache.stockImages[IconCache.iconOpenDrive]);
- item.setData(TREEITEMDATA_IMAGECOLLAPSED, IconCache.stockImages[IconCache.iconClosedDrive]);
- }
-
- /**
- * Creates the file details table.
- *
- * @param parent the parent control
- */
- private void createTableView(Composite parent) {
- Composite composite = new Composite(parent, SWT.NONE);
- GridLayout gridLayout = new GridLayout();
- gridLayout.numColumns = 1;
- gridLayout.marginHeight = gridLayout.marginWidth = 2;
- gridLayout.horizontalSpacing = gridLayout.verticalSpacing = 0;
- composite.setLayout(gridLayout);
- tableContentsOfLabel = new Label(composite, SWT.BORDER);
- tableContentsOfLabel.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL));
-
- table = new Table(composite, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.MULTI | SWT.FULL_SELECTION);
- table.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.FILL_VERTICAL));
-
- for (int i = 0; i < tableTitles.length; ++i) {
- TableColumn column = new TableColumn(table, SWT.NONE);
- column.setText(tableTitles[i]);
- column.setWidth(tableWidths[i]);
- }
- table.setHeaderVisible(true);
- table.addSelectionListener(new SelectionAdapter() {
- public void widgetSelected(SelectionEvent event) {
- notifySelectedFiles(getSelectedFiles());
- }
- public void widgetDefaultSelected(SelectionEvent event) {
- doDefaultFileAction(getSelectedFiles());
- }
- private File[] getSelectedFiles() {
- final TableItem[] items = table.getSelection();
- final File[] files = new File[items.length];
-
- for (int i = 0; i < items.length; ++i) {
- files[i] = (File) items[i].getData(TABLEITEMDATA_FILE);
- }
- return files;
- }
- });
-
- createTableDragSource(table);
- createTableDropTarget(table);
- }
-
- /**
- * Creates the Drag & Drop DragSource for items being dragged from the table.
- *
- * @return the DragSource for the table
- */
- private DragSource createTableDragSource(final Table table) {
- DragSource dragSource = new DragSource(table, DND.DROP_MOVE | DND.DROP_COPY);
- dragSource.setTransfer(new Transfer[] { FileTransfer.getInstance() });
- dragSource.addDragListener(new DragSourceListener() {
- TableItem[] dndSelection = null;
- String[] sourceNames = null;
- public void dragStart(DragSourceEvent event){
- dndSelection = table.getSelection();
- sourceNames = null;
- event.doit = dndSelection.length > 0;
- isDragging = true;
- }
- public void dragFinished(DragSourceEvent event){
- dragSourceHandleDragFinished(event, sourceNames);
- dndSelection = null;
- sourceNames = null;
- isDragging = false;
- handleDeferredRefresh();
- }
- public void dragSetData(DragSourceEvent event){
- if (dndSelection == null || dndSelection.length == 0) return;
- if (! FileTransfer.getInstance().isSupportedType(event.dataType)) return;
-
- sourceNames = new String[dndSelection.length];
- for (int i = 0; i < dndSelection.length; i++) {
- File file = (File) dndSelection[i].getData(TABLEITEMDATA_FILE);
- sourceNames[i] = file.getAbsolutePath();
- }
- event.data = sourceNames;
- }
- });
- return dragSource;
- }
-
- /**
- * Creates the Drag & Drop DropTarget for items being dropped onto the table.
- *
- * @return the DropTarget for the table
- */
- private DropTarget createTableDropTarget(final Table table){
- DropTarget dropTarget = new DropTarget(table, DND.DROP_MOVE | DND.DROP_COPY);
- dropTarget.setTransfer(new Transfer[] { FileTransfer.getInstance() });
- dropTarget.addDropListener(new DropTargetAdapter() {
- public void dragEnter(DropTargetEvent event) {
- isDropping = true;
- }
- public void dragLeave(DropTargetEvent event) {
- isDropping = false;
- handleDeferredRefresh();
- }
- public void dragOver(DropTargetEvent event) {
- dropTargetValidate(event, getTargetFile(event));
- event.feedback |= DND.FEEDBACK_EXPAND | DND.FEEDBACK_SCROLL;
- }
- public void drop(DropTargetEvent event) {
- File targetFile = getTargetFile(event);
- if (dropTargetValidate(event, targetFile))
- dropTargetHandleDrop(event, targetFile);
- }
- private File getTargetFile(DropTargetEvent event) {
- // Determine the target File for the drop
- TableItem item = table.getItem(table.toControl(new Point(event.x, event.y)));
- File targetFile = null;
- if (item == null) {
- // We are over an unoccupied area of the table.
- // If it is a COPY, we can use the table's root file.
- if (event.detail == DND.DROP_COPY) {
- targetFile = (File) table.getData(TABLEDATA_DIR);
- }
- } else {
- // We are over a particular item in the table, use the item's file
- targetFile = (File) item.getData(TABLEITEMDATA_FILE);
- }
- return targetFile;
- }
- });
- return dropTarget;
- }
-
- /**
- * Notifies the application components that a new current directory has been selected
- *
- * @param dir the directory that was selected, null is ignored
- */
- void notifySelectedDirectory(File dir) {
- if (dir == null) return;
- if (currentDirectory != null && dir.equals(currentDirectory)) return;
- currentDirectory = dir;
- notifySelectedFiles(null);
-
- /* Shell:
- * Sets the title to indicate the selected directory
- */
- shell.setText(getResourceString("Title", new Object[] { currentDirectory.getPath() }));
-
/* Table view:
- * Displays the contents of the selected directory.
- */
- workerUpdate(dir, false);
-
- /* Combo view:
- * Sets the combo box to point to the selected directory.
- */
- final File[] comboRoots = (File[]) combo.getData(COMBODATA_ROOTS);
- int comboEntry = -1;
- if (comboRoots != null) {
- for (int i = 0; i < comboRoots.length; ++i) {
- if (dir.equals(comboRoots[i])) {
- comboEntry = i;
- break;
- }
- }
- }
- if (comboEntry == -1) combo.setText(dir.getPath());
- else combo.select(comboEntry);
-
- /* Tree view:
- * If not already expanded, recursively expands the parents of the specified
- * directory until it is visible.
- */
- Vector /* of File */ path = new Vector();
- // Build a stack of paths from the root of the tree
- while (dir != null) {
- path.add(dir);
- dir = dir.getParentFile();
- }
- // Recursively expand the tree to get to the specified directory
- TreeItem[] items = tree.getItems();
- TreeItem lastItem = null;
- for (int i = path.size() - 1; i >= 0; --i) {
- final File pathElement = (File) path.elementAt(i);
-
- // Search for a particular File in the array of tree items
- // No guarantee that the items are sorted in any recognizable fashion, so we'll
- // just sequential scan. There shouldn't be more than a few thousand entries.
- TreeItem item = null;
- for (int k = 0; k < items.length; ++k) {
- item = items[k];
- if (item.isDisposed()) continue;
- final File itemFile = (File) item.getData(TREEITEMDATA_FILE);
- if (itemFile != null && itemFile.equals(pathElement)) break;
- }
- if (item == null) break;
- lastItem = item;
- if (i != 0 && !item.getExpanded()) {
- treeExpandItem(item);
- item.setExpanded(true);
- }
- items = item.getItems();
- }
- tree.setSelection((lastItem != null) ? new TreeItem[] { lastItem } : new TreeItem[0]);
- }
-
- /**
- * Notifies the application components that files have been selected
- *
- * @param files the files that were selected, null or empty array indicates no active selection
- */
- void notifySelectedFiles(File[] files) {
- /* Details:
- * Update the details that are visible on screen.
- */
- if ((files != null) && (files.length != 0)) {
- numObjectsLabel.setText(getResourceString("details.NumberOfSelectedFiles.text",
- new Object[] { new Integer(files.length) }));
- long fileSize = 0L;
- for (int i = 0; i < files.length; ++i) {
- fileSize += files[i].length();
- }
- diskSpaceLabel.setText(getResourceString("details.FileSize.text",
- new Object[] { new Long(fileSize) }));
- } else {
- // No files selected
- diskSpaceLabel.setText("");
- if (currentDirectory != null) {
- int numObjects = getDirectoryList(currentDirectory).length;
- numObjectsLabel.setText(getResourceString("details.DirNumberOfObjects.text",
- new Object[] { new Integer(numObjects) }));
- } else {
- numObjectsLabel.setText("");
- }
- }
- }
-
- /**
- * Notifies the application components that files must be refreshed
- *
- * @param files the files that need refreshing, empty array is a no-op, null refreshes all
- */
- void notifyRefreshFiles(File[] files) {
- if (files != null && files.length == 0) return;
-
- if ((deferredRefreshRequested) && (deferredRefreshFiles != null) && (files != null)) {
- // merge requests
- File[] newRequest = new File[deferredRefreshFiles.length + files.length];
- System.arraycopy(deferredRefreshFiles, 0, newRequest, 0, deferredRefreshFiles.length);
- System.arraycopy(files, 0, newRequest, deferredRefreshFiles.length, files.length);
- deferredRefreshFiles = newRequest;
- } else {
- deferredRefreshFiles = files;
- deferredRefreshRequested = true;
- }
- handleDeferredRefresh();
- }
-
- /**
- * Handles deferred Refresh notifications (due to Drag & Drop)
- */
- void handleDeferredRefresh() {
- if (isDragging || isDropping || ! deferredRefreshRequested) return;
- if (progressDialog != null) {
- progressDialog.close();
- progressDialog = null;
- }
-
- deferredRefreshRequested = false;
- File[] files = deferredRefreshFiles;
- deferredRefreshFiles = null;
-
- shell.setCursor(IconCache.stockCursors[IconCache.cursorWait]);
-
- /* Table view:
- * Refreshes information about any files in the list and their children.
- */
- boolean refreshTable = false;
- if (files != null) {
- for (int i = 0; i < files.length; ++i) {
- final File file = files[i];
- if (file.equals(currentDirectory)) {
- refreshTable = true;
- break;
- }
- File parentFile = file.getParentFile();
- if ((parentFile != null) && (parentFile.equals(currentDirectory))) {
- refreshTable = true;
- break;
- }
- }
- } else refreshTable = true;
- if (refreshTable) workerUpdate(currentDirectory, true);
-
- /* Combo view:
- * Refreshes the list of roots
- */
- final File[] roots = getRoots();
-
- if (files == null) {
- boolean refreshCombo = false;
- final File[] comboRoots = (File[]) combo.getData(COMBODATA_ROOTS);
-
- if ((comboRoots != null) && (comboRoots.length == roots.length)) {
- for (int i = 0; i < roots.length; ++i) {
- if (! roots[i].equals(comboRoots[i])) {
- refreshCombo = true;
- break;
- }
- }
- } else refreshCombo = true;
-
- if (refreshCombo) {
- combo.removeAll();
- combo.setData(COMBODATA_ROOTS, roots);
- for (int i = 0; i < roots.length; ++i) {
- final File file = roots[i];
- combo.add(file.getPath());
- }
- }
- }
-
- /* Tree view:
- * Refreshes information about any files in the list and their children.
- */
- treeRefresh(roots);
-
- // Remind everyone where we are in the filesystem
- final File dir = currentDirectory;
- currentDirectory = null;
- notifySelectedDirectory(dir);
-
- shell.setCursor(IconCache.stockCursors[IconCache.cursorDefault]);
- }
-
- /**
- * Performs the default action on a set of files.
- *
- * @param files the array of files to process
- */
- void doDefaultFileAction(File[] files) {
- // only uses the 1st file (for now)
- if (files.length == 0) return;
- final File file = files[0];
-
- if (file.isDirectory()) {
- notifySelectedDirectory(file);
- } else {
- final String fileName = file.getAbsolutePath();
- if (! Program.launch(fileName)) {
- MessageBox dialog = new MessageBox(shell, SWT.ICON_ERROR | SWT.OK);
- dialog.setMessage(getResourceString("error.FailedLaunch.message", new Object[] { fileName }));
- dialog.setText(shell.getText ());
- dialog.open();
- }
- }
- }
-
- /**
- * Navigates to the parent directory
- */
- void doParent() {
- if (currentDirectory == null) return;
- File parentDirectory = currentDirectory.getParentFile();
- notifySelectedDirectory(parentDirectory);
- }
-
- /**
- * Performs a refresh
- */
- void doRefresh() {
- notifyRefreshFiles(null);
- }
-
- /**
- * Validates a drop target as a candidate for a drop operation.
- * <p>
- * Used in dragOver() and dropAccept().<br>
- * Note event.detail is set to DND.DROP_NONE by this method if the target is not valid.
- * </p>
- * @param event the DropTargetEvent to validate
- * @param targetFile the File representing the drop target location
- * under inspection, or null if none
- */
- private boolean dropTargetValidate(DropTargetEvent event, File targetFile) {
- if (targetFile != null && targetFile.isDirectory()) {
- if (event.detail != DND.DROP_COPY && event.detail != DND.DROP_MOVE) {
- event.detail = DND.DROP_MOVE;
- }
- } else {
- event.detail = DND.DROP_NONE;
- }
- return event.detail != DND.DROP_NONE;
- }
-
- /**
- * Handles a drop on a dropTarget.
- * <p>
- * Used in drop().<br>
- * Note event.detail is modified by this method.
- * </p>
- * @param event the DropTargetEvent passed as parameter to the drop() method
- * @param targetFile the File representing the drop target location
- * under inspection, or null if none
- */
- private void dropTargetHandleDrop(DropTargetEvent event, File targetFile) {
- // Get dropped data (an array of filenames)
- if (! dropTargetValidate(event, targetFile)) return;
- final String[] sourceNames = (String[]) event.data;
- if (sourceNames == null) event.detail = DND.DROP_NONE;
- if (event.detail == DND.DROP_NONE) return;
-
- // Open progress dialog
- progressDialog = new ProgressDialog(shell,
- (event.detail == DND.DROP_MOVE) ? ProgressDialog.MOVE : ProgressDialog.COPY);
- progressDialog.setTotalWorkUnits(sourceNames.length);
- progressDialog.open();
-
- // Copy each file
- Vector /* of File */ processedFiles = new Vector();
- for (int i = 0; (i < sourceNames.length) && (! progressDialog.isCancelled()); i++){
- final File source = new File(sourceNames[i]);
- final File dest = new File(targetFile, source.getName());
- if (source.equals(dest)) continue; // ignore if in same location
-
- progressDialog.setDetailFile(source, ProgressDialog.COPY);
- while (! progressDialog.isCancelled()) {
- if (copyFileStructure(source, dest)) {
- processedFiles.add(source);
- break;
- } else if (! progressDialog.isCancelled()) {
- if (event.detail == DND.DROP_MOVE && (!isDragging)) {
- // It is not possible to notify an external drag source that a drop
- // operation was only partially successful. This is particularly a
- // problem for DROP_MOVE operations since unless the source gets
- // DROP_NONE, it will delete the original data including bits that
- // may not have been transferred successfully.
- MessageBox box = new MessageBox(shell, SWT.ICON_ERROR | SWT.RETRY | SWT.CANCEL);
- box.setText(getResourceString("dialog.FailedCopy.title"));
- box.setMessage(getResourceString("dialog.FailedCopy.description",
- new Object[] { source, dest }));
- int button = box.open();
- if (button == SWT.CANCEL) {
- i = sourceNames.length;
- event.detail = DND.DROP_NONE;
- break;
- }
- } else {
- // We can recover gracefully from errors if the drag source belongs
- // to this application since it will look at processedDropFiles.
- MessageBox box = new MessageBox(shell, SWT.ICON_ERROR | SWT.ABORT | SWT.RETRY | SWT.IGNORE);
- box.setText(getResourceString("dialog.FailedCopy.title"));
- box.setMessage(getResourceString("dialog.FailedCopy.description",
- new Object[] { source, dest }));
- int button = box.open();
- if (button == SWT.ABORT) i = sourceNames.length;
- if (button != SWT.RETRY) break;
- }
- }
- progressDialog.addProgress(1);
- }
- }
- if (isDragging) {
- // Remember exactly which files we processed
- processedDropFiles = ((File[]) processedFiles.toArray(new File[processedFiles.size()]));
- } else {
- progressDialog.close();
- progressDialog = null;
- }
- notifyRefreshFiles(new File[] { targetFile });
- }
-
- /**
- * Handles the completion of a drag on a dragSource.
- * <p>
- * Used in dragFinished().<br>
- * </p>
- * @param event the DragSourceEvent passed as parameter to the dragFinished() method
- * @param sourceNames the names of the files that were dragged (event.data is invalid)
- */
- private void dragSourceHandleDragFinished(DragSourceEvent event, String[] sourceNames) {
- if (sourceNames == null) return;
- if (event.detail != DND.DROP_MOVE) return;
-
- // Get array of files that were actually transferred
- final File[] sourceFiles;
- if (processedDropFiles != null) {
- sourceFiles = processedDropFiles;
- } else {
- sourceFiles = new File[sourceNames.length];
- for (int i = 0; i < sourceNames.length; ++i)
- sourceFiles[i] = new File(sourceNames[i]);
- }
- if (progressDialog == null)
- progressDialog = new ProgressDialog(shell, ProgressDialog.MOVE);
- progressDialog.setTotalWorkUnits(sourceFiles.length);
- progressDialog.setProgress(0);
- progressDialog.open();
-
- // Delete each file
- for (int i = 0; (i < sourceFiles.length) && (! progressDialog.isCancelled()); i++){
- final File source = sourceFiles[i];
- progressDialog.setDetailFile(source, ProgressDialog.DELETE);
- while (! progressDialog.isCancelled()) {
- if (deleteFileStructure(source)) {
- break;
- } else if (! progressDialog.isCancelled()) {
- MessageBox box = new MessageBox(shell, SWT.ICON_ERROR | SWT.ABORT | SWT.RETRY | SWT.IGNORE);
- box.setText(getResourceString("dialog.FailedDelete.title"));
- box.setMessage(getResourceString("dialog.FailedDelete.description",
- new Object[] { source }));
- int button = box.open();
- if (button == SWT.ABORT) i = sourceNames.length;
- if (button == SWT.RETRY) break;
- }
- }
- progressDialog.addProgress(1);
- }
- notifyRefreshFiles(sourceFiles);
- progressDialog.close();
- progressDialog = null;
- }
-
- /**
- * Gets filesystem root entries
- *
- * @return an array of Files corresponding to the root directories on the platform,
- * may be empty but not null
- */
- File[] getRoots() {
- /*
- * On JDK 1.22 only...
- */
- // return File.listRoots();
-
- /*
- * On JDK 1.1.7 and beyond...
- * -- PORTABILITY ISSUES HERE --
- */
- if (System.getProperty ("os.name").indexOf ("Windows") != -1) {
- Vector /* of File */ list = new Vector();
- list.add(new File(DRIVE_A));
- list.add(new File(DRIVE_B));
- for (char i = 'c'; i <= 'z'; ++i) {
- File drive = new File(i + ":" + File.separator);
- if (drive.isDirectory() && drive.exists()) {
- list.add(drive);
- if (initial && i == 'c') {
- currentDirectory = drive;
- initial = false;
- }
- }
- }
- File[] roots = (File[]) list.toArray(new File[list.size()]);
- sortFiles(roots);
- return roots;
- } else {
- File root = new File(File.separator);
- if (initial) {
- currentDirectory = root;
- }
- return new File[] { root };
- }
- }
-
- /**
- * Gets a directory listing
- *
- * @param file the directory to be listed
- * @return an array of files this directory contains, may be empty but not null
- */
- static File[] getDirectoryList(File file) {
- File[] list = file.listFiles();
- if (list == null) return new File[0];
- sortFiles(list);
- return list;
- }
-
- /**
- * Copies a file or entire directory structure.
- *
- * @param oldFile the location of the old file or directory
- * @param newFile the location of the new file or directory
- * @return true iff the operation succeeds without errors
- */
- boolean copyFileStructure(File oldFile, File newFile) {
- if (oldFile == null || newFile == null) return false;
-
- // ensure that newFile is not a child of oldFile or a dupe
- File searchFile = newFile;
- do {
- if (oldFile.equals(searchFile)) return false;
- searchFile = searchFile.getParentFile();
- } while (searchFile != null);
-
- if (oldFile.isDirectory()) {
- /*
- * Copy a directory
- */
- if (progressDialog != null) {
- progressDialog.setDetailFile(oldFile, ProgressDialog.COPY);
- }
- if (simulateOnly) {
- //System.out.println(getResourceString("simulate.DirectoriesCreated.text",
- // new Object[] { newFile.getPath() }));
- } else {
- if (! newFile.mkdirs()) return false;
- }
- File[] subFiles = oldFile.listFiles();
- if (subFiles != null) {
- if (progressDialog != null) {
- progressDialog.addWorkUnits(subFiles.length);
- }
- for (int i = 0; i < subFiles.length; i++) {
- File oldSubFile = subFiles[i];
- File newSubFile = new File(newFile, oldSubFile.getName());
- if (! copyFileStructure(oldSubFile, newSubFile)) return false;
- if (progressDialog != null) {
- progressDialog.addProgress(1);
- if (progressDialog.isCancelled()) return false;
- }
- }
- }
- } else {
- /*
- * Copy a file
- */
- if (simulateOnly) {
- //System.out.println(getResourceString("simulate.CopyFromTo.text",
- // new Object[] { oldFile.getPath(), newFile.getPath() }));
- } else {
- FileReader in = null;
- FileWriter out = null;
- try {
- in = new FileReader(oldFile);
- out = new FileWriter(newFile);
-
- int count;
- while ((count = in.read()) != -1) out.write(count);
- } catch (FileNotFoundException e) {
- return false;
- } catch (IOException e) {
- return false;
- } finally {
- try {
- if (in != null) in.close();
- if (out != null) out.close();
- } catch (IOException e) {
- return false;
- }
- }
- }
- }
- return true;
- }
-
- /**
- * Deletes a file or entire directory structure.
- *
- * @param oldFile the location of the old file or directory
- * @return true iff the operation succeeds without errors
- */
- boolean deleteFileStructure(File oldFile) {
- if (oldFile == null) return false;
- if (oldFile.isDirectory()) {
- /*
- * Delete a directory
- */
- if (progressDialog != null) {
- progressDialog.setDetailFile(oldFile, ProgressDialog.DELETE);
- }
- File[] subFiles = oldFile.listFiles();
- if (subFiles != null) {
- if (progressDialog != null) {
- progressDialog.addWorkUnits(subFiles.length);
- }
- for (int i = 0; i < subFiles.length; i++) {
- File oldSubFile = subFiles[i];
- if (! deleteFileStructure(oldSubFile)) return false;
- if (progressDialog != null) {
- progressDialog.addProgress(1);
- if (progressDialog.isCancelled()) return false;
- }
- }
- }
- }
- if (simulateOnly) {
- //System.out.println(getResourceString("simulate.Delete.text",
- // new Object[] { oldFile.getPath(), oldFile.getPath() }));
- return true;
- } else {
- return oldFile.delete();
- }
- }
-
- /**
- * Sorts files lexicographically by name.
- *
- * @param files the array of Files to be sorted
- */
- static void sortFiles(File[] files) {
- /* Very lazy merge sort algorithm */
- sortBlock(files, 0, files.length - 1, new File[files.length]);
- }
- private static void sortBlock(File[] files, int start, int end, File[] mergeTemp) {
- final int length = end - start + 1;
- if (length < 8) {
- for (int i = end; i > start; --i) {
- for (int j = end; j > start; --j) {
- if (compareFiles(files[j - 1], files[j]) > 0) {
- final File temp = files[j];
- files[j] = files[j-1];
- files[j-1] = temp;
- }
- }
- }
- return;
- }
- final int mid = (start + end) / 2;
- sortBlock(files, start, mid, mergeTemp);
- sortBlock(files, mid + 1, end, mergeTemp);
- int x = start;
- int y = mid + 1;
- for (int i = 0; i < length; ++i) {
- if ((x > mid) || ((y <= end) && compareFiles(files[x], files[y]) > 0)) {
- mergeTemp[i] = files[y++];
- } else {
- mergeTemp[i] = files[x++];
- }
- }
- for (int i = 0; i < length; ++i) files[i + start] = mergeTemp[i];
- }
- private static int compareFiles(File a, File b) {
-// boolean aIsDir = a.isDirectory();
-// boolean bIsDir = b.isDirectory();
-// if (aIsDir && ! bIsDir) return -1;
-// if (bIsDir && ! aIsDir) return 1;
-
- // sort case-sensitive files in a case-insensitive manner
- int compare = a.getName().compareToIgnoreCase(b.getName());
- if (compare == 0) compare = a.getName().compareTo(b.getName());
- return compare;
- }
-
- /*
- * This worker updates the table with file information in the background.
- * <p>
- * Implementation notes:
- * <ul>
- * <li> It is designed such that it can be interrupted cleanly.
- * <li> It uses asyncExec() in some places to ensure that SWT Widgets are manipulated in the
- * right thread. Exclusive use of syncExec() would be inappropriate as it would require a pair
- * of context switches between each table update operation.
- * </ul>
- * </p>
- */
-
- /**
- * Stops the worker and waits for it to terminate.
- */
- void workerStop() {
- if (workerThread == null) return;
- synchronized(workerLock) {
- workerCancelled = true;
- workerStopped = true;
- workerLock.notifyAll();
- }
- while (workerThread != null) {
- if (! display.readAndDispatch()) display.sleep();
- }
- }
-
- /**
- * Notifies the worker that it should update itself with new data.
- * Cancels any previous operation and begins a new one.
- *
- * @param dir the new base directory for the table, null is ignored
- * @param force if true causes a refresh even if the data is the same
- */
- void workerUpdate(File dir, boolean force) {
- if (dir == null) return;
- if ((!force) && (workerNextDir != null) && (workerNextDir.equals(dir))) return;
-
- synchronized(workerLock) {
- workerNextDir = dir;
- workerStopped = false;
- workerCancelled = true;
- workerLock.notifyAll();
- }
- if (workerThread == null) {
- workerThread = new Thread(workerRunnable);
- workerThread.start();
- }
- }
-
- /**
- * Manages the worker's thread
- */
- private final Runnable workerRunnable = new Runnable() {
- public void run() {
- while (! workerStopped) {
- synchronized(workerLock) {
- workerCancelled = false;
- workerStateDir = workerNextDir;
- }
- workerExecute();
- synchronized(workerLock) {
- try {
- if ((!workerCancelled) && (workerStateDir == workerNextDir)) workerLock.wait();
- } catch (InterruptedException e) {
- }
- }
- }
- workerThread = null;
- // wake up UI thread in case it is in a modal loop awaiting thread termination
- // (see workerStop())
- display.wake();
- }
- };
-
- /**
- * Updates the table's contents
- */
- private void workerExecute() {
- File[] dirList;
-
- // Clear existing information
- display.syncExec(new Runnable() {
- public void run() {
- tableContentsOfLabel.setText(FileViewer.getResourceString("details.ContentsOf.text",
- new Object[] { workerStateDir.getPath() }));
- table.removeAll();
- table.setRedraw(false);
- table.setData(TABLEDATA_DIR, workerStateDir);
- }
- });
- dirList = getDirectoryList(workerStateDir);
-
- for (int i = 0; (! workerCancelled) && (i < dirList.length); i++) {
- final File theFile = dirList[i];
- workerAddFileDetails(dirList[i]);
-
- final boolean doIncrementalRefresh = ((i & 127) == 127);
- if (doIncrementalRefresh) display.syncExec(new Runnable() {
- public void run () {
- // guard against the shell being closed before this runs
- if (shell.isDisposed()) return;
- table.setRedraw(true);
- table.setRedraw(false);
- }
- });
- }
-
- // Allow the table to refresh itself
- display.asyncExec(new Runnable() {
- public void run() {
- // guard against the shell being closed before this runs
- if (shell.isDisposed()) return;
- table.setRedraw(true);
- }
- });
- }
-
- /**
- * Adds a file's detail information to the directory list
- */
- private void workerAddFileDetails(final File file) {
- final String nameString = file.getName();
- final String dateString = dateFormat.format(new Date(file.lastModified()));
- final String sizeString;
- final String typeString;
- final Image iconImage;
-
- if (file.isDirectory()) {
- typeString = getResourceString("filetype.Folder");
- sizeString = "";
- iconImage = IconCache.stockImages[IconCache.iconClosedFolder];
- } else {
- sizeString = getResourceString("filesize.KB",
- new Object[] { new Long((file.length() + 512) / 1024) });
-
- int dot = nameString.lastIndexOf('.');
- if (dot != -1) {
- String extension = nameString.substring(dot);
- Program program = Program.findProgram(extension);
- if (program != null) {
- typeString = program.getName();
- iconImage = IconCache.getIconFromProgram(program);
- } else {
- typeString = getResourceString("filetype.Unknown", new Object[] { extension.toUpperCase() });
- iconImage = IconCache.stockImages[IconCache.iconFile];
- }
- } else {
- typeString = getResourceString("filetype.None");
- iconImage = IconCache.stockImages[IconCache.iconFile];
- }
- }
- final String[] strings = new String[] { nameString, sizeString, typeString, dateString };
-
- display.asyncExec(new Runnable() {
- public void run () {
- // guard against the shell being closed before this runs
- if (shell.isDisposed()) return;
- TableItem tableItem = new TableItem(table, 0);
- tableItem.setText(strings);
- tableItem.setImage(iconImage);
- tableItem.setData(TABLEITEMDATA_FILE, file);
- }
- });
- }
-
- /**
- * Instances of this class manage a progress dialog for file operations.
- */
- class ProgressDialog {
- public final static int COPY = 0;
- public final static int DELETE = 1;
- public final static int MOVE = 2;
-
- Shell shell;
- Label messageLabel, detailLabel;
- ProgressBar progressBar;
- Button cancelButton;
- boolean isCancelled = false;
-
- final String operationKeyName[] = {
- "Copy",
- "Delete",
- "Move"
- };
-
- /**
- * Creates a progress dialog but does not open it immediately.
- *
- * @param parent the parent Shell
- * @param style one of COPY, MOVE
- */
- public ProgressDialog(Shell parent, int style) {
- shell = new Shell(parent, SWT.BORDER | SWT.TITLE | SWT.APPLICATION_MODAL);
- GridLayout gridLayout = new GridLayout();
- shell.setLayout(gridLayout);
- shell.setText(getResourceString("progressDialog." + operationKeyName[style] + ".title"));
- shell.addShellListener(new ShellAdapter() {
- public void shellClosed(ShellEvent e) {
- isCancelled = true;
- }
- });
-
- messageLabel = new Label(shell, SWT.HORIZONTAL);
- messageLabel.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL));
- messageLabel.setText(getResourceString("progressDialog." + operationKeyName[style] + ".description"));
-
- progressBar = new ProgressBar(shell, SWT.HORIZONTAL | SWT.WRAP);
- progressBar.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL));
- progressBar.setMinimum(0);
- progressBar.setMaximum(0);
-
- detailLabel = new Label(shell, SWT.HORIZONTAL);
- GridData gridData = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_BEGINNING);
- gridData.widthHint = 400;
- detailLabel.setLayoutData(gridData);
-
- cancelButton = new Button(shell, SWT.PUSH);
- cancelButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_END | GridData.VERTICAL_ALIGN_FILL));
- cancelButton.setText(getResourceString("progressDialog.cancelButton.text"));
- cancelButton.addSelectionListener(new SelectionAdapter() {
- public void widgetSelected(SelectionEvent e) {
- isCancelled = true;
- cancelButton.setEnabled(false);
- }
- });
- }
- /**
- * Sets the detail text to show the filename along with a string
- * representing the operation being performed on that file.
- *
- * @param file the file to be detailed
- * @param operation one of COPY, DELETE
- */
- public void setDetailFile(File file, int operation) {
- String filename = file.getName();
- detailLabel.setText(getResourceString("progressDialog." + operationKeyName[operation] + ".operation",
- new Object[] { file }));
- }
- /**
- * Returns true if the Cancel button was been clicked.
- *
- * @return true if the Cancel button was clicked.
- */
- public boolean isCancelled() {
- return isCancelled;
- }
- /**
- * Sets the total number of work units to be performed.
- *
- * @param work the total number of work units
- */
- public void setTotalWorkUnits(int work) {
- progressBar.setMaximum(work);
- }
- /**
- * Adds to the total number of work units to be performed.
- *
- * @param work the number of work units to add
- */
- public void addWorkUnits(int work) {
- setTotalWorkUnits(progressBar.getMaximum() + work);
- }
- /**
- * Sets the progress of completion of the total work units.
- *
- * @param work the total number of work units completed
- */
- public void setProgress(int work) {
- progressBar.setSelection(work);
- while (display.readAndDispatch()); // enable event processing
- }
- /**
- * Adds to the progress of completion of the total work units.
- *
- * @param work the number of work units completed to add
- */
- public void addProgress(int work) {
- setProgress(progressBar.getSelection() + work);
- }
- /**
- * Opens the dialog.
- */
- public void open() {
- shell.pack();
- final Shell parentShell = (Shell) shell.getParent();
- Rectangle rect = parentShell.getBounds();
- Rectangle bounds = shell.getBounds();
- bounds.x = rect.x + (rect.width - bounds.width) / 2;
- bounds.y = rect.y + (rect.height - bounds.height) / 2;
- shell.setBounds(bounds);
- shell.open();
- }
- /**
- * Closes the dialog and disposes its resources.
- */
- public void close() {
- shell.close();
- shell.dispose();
- shell = null;
- messageLabel = null;
- detailLabel = null;
- progressBar = null;
- cancelButton = null;
- }
- }
-}
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