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authorJeff Brown2001-06-19 13:44:33 -0400
committerJeff Brown2001-06-19 13:44:33 -0400
commitad9f106d71086a57ef16245041e1d311d60ad409 (patch)
tree67550c2791d2b808d45b433aa8b9299da4334545
parentcbfd16cd660aa7459fe0a7e12c136333699dd037 (diff)
downloadeclipse.platform.swt-Jeff.tar.gz
eclipse.platform.swt-Jeff.tar.xz
eclipse.platform.swt-Jeff.zip
-rwxr-xr-xexamples/org.eclipse.swt.examples/org/eclipse/swt/examples/fileviewer/TableView.java2
-rwxr-xr-xexamples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/fileviewer/TableView.java2
2 files changed, 2 insertions, 2 deletions
diff --git a/examples/org.eclipse.swt.examples/org/eclipse/swt/examples/fileviewer/TableView.java b/examples/org.eclipse.swt.examples/org/eclipse/swt/examples/fileviewer/TableView.java
index a21fb08acc..8f08111ed5 100755
--- a/examples/org.eclipse.swt.examples/org/eclipse/swt/examples/fileviewer/TableView.java
+++ b/examples/org.eclipse.swt.examples/org/eclipse/swt/examples/fileviewer/TableView.java
@@ -1 +1 @@
-package org.eclipse.swt.examples.fileviewer; /* * (c) Copyright IBM Corp. 2000, 2001. * All Rights Reserved */ import org.eclipse.swt.*; 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.*; /** * A detailed directory listing */ public class TableView { private static final String TABLEITEMDATA_FILE = "TableItem.file"; // File: File associated with table row private final Table table; private final Label contentsOfLabel; private final Shell shell; private final Display display; private final FileViewer viewer; private File activeDir = null; private boolean inDrag = false; /* Worker thread control */ private UpdateWorker tableUpdateWorker = null; final String[] titles = new String [] { FileViewer.getResourceString("table.Name.title"), FileViewer.getResourceString("table.Size.title"), FileViewer.getResourceString("table.Type.title"), FileViewer.getResourceString("table.Modified.title") }; final int[] widths = new int[] {150, 60, 75, 150}; /** * Creates the file details table. * * @param theViewer the viewer to attach to * @param parent the parent control * @param layoutData the layout data */ public TableView(FileViewer theViewer, Composite parent, Object layoutData) { this.viewer = theViewer; shell = parent.getShell(); display = shell.getDisplay(); Composite composite = new Composite(parent, SWT.NONE); composite.setLayoutData(layoutData); GridLayout gridLayout = new GridLayout(); gridLayout.numColumns = 1; gridLayout.marginHeight = gridLayout.marginWidth = 2; gridLayout.horizontalSpacing = gridLayout.verticalSpacing = 0; composite.setLayout(gridLayout); contentsOfLabel = new Label(composite, SWT.BORDER); contentsOfLabel.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL)); table = new Table(composite, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.MULTI); table.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.FILL_VERTICAL)); for (int i = 0; i < titles.length; i++) { TableColumn column = new TableColumn(table, SWT.NONE); column.setText(titles [i]); column.setWidth(widths [i]); } table.setHeaderVisible(true); table.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { if (inDrag) return; viewer.notifySelectedFiles(getSelectedFiles()); } public void widgetDefaultSelected(SelectionEvent event) { if (inDrag) return; viewer.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); tableUpdateWorker = new TableUpdateWorker(); } /** * Dispose of allocated resources and shut down. */ public void dispose() { tableUpdateWorker.syncStop(); } /** * Updates the table with file information in the background. * <p> * It is designed such that it can be interrupted cleanly. Rather than put all the code * to manage this here, the balance has been pushed out to UpdateWorker so it can be re-used. * </p> */ private class TableUpdateWorker extends UpdateWorker { private File currentDir = null; private File[] currentFiles = null; private File[] currentDirList = null; public TableUpdateWorker() { super(TableView.this.display); } /** * Updates the table's contents * * @param data arguments in an Object[] * <ul> * <li>File data[0] dir the current directory, null does nothing * <li>File[] data[1] the list of files to select, null does nothing * <li>Boolean data[2] if true, forces a refresh * </ul> */ protected void execute(Object data) { // Get arguments final Object[] args = (Object[]) data; final File argDir = (File) args[0]; final File[] argFiles = (File[]) args[1]; final boolean argForce = ((Boolean) args[2]).booleanValue(); // Update current state if (argDir != null) currentDir = argDir; if (argFiles != null) currentFiles = argFiles; else if (argDir != null) currentFiles = new File[0]; // Perform necessary refreshing if (argDir != null) updateDirectoryListing(); else if (argFiles != null) updateFileSelection(); if (isCancelled()) { currentFiles = null; currentDir = null; currentDirList = null; } } /* * Note the use of 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. */ /** * Updates directory list */ private void updateDirectoryListing() { // Clear existing information TableView.this.display.syncExec(new Runnable() { public void run() { viewer.clearDetails(); contentsOfLabel.setText(FileViewer.getResourceString("details.ContentsOf.text", new Object[] { currentDir.getPath() })); table.removeAll(); table.setRedraw(false); TableView.this.activeDir = currentDir; // synchronize this } }); currentDirList = FileViewer.getDirectoryList(currentDir); updateDetails(); for (int i = 0; (! isCancelled()) && (i < currentDirList.length); i++) { final File theFile = currentDirList[i]; addFileDetails(currentDirList[i]); final boolean doIncrementalRefresh = ((i & 127) == 127); if (doIncrementalRefresh) TableView.this.display.syncExec(new Runnable() { public void run () { table.setRedraw(true); table.setRedraw(false); } }); } // Allow the table to refresh itself TableView.this.display.asyncExec(new Runnable() { public void run() { table.setRedraw(true); } }); } /** * Adds a file's detail information to the directory list */ private void addFileDetails(final File file) { final FileDisplayInfo displayInfo = viewer.getFileDisplayInfo(file); final String[] strings = new String[] { displayInfo.nameString, displayInfo.sizeString, displayInfo.typeString, displayInfo.dateString }; final Image image = displayInfo.iconImage; TableView.this.display.asyncExec(new Runnable() { public void run () { TableItem tableItem = new TableItem(table, 0); tableItem.setText(strings); tableItem.setImage(image); tableItem.setData(TABLEITEMDATA_FILE, file); } }); } /** * Updates the current file selection */ private void updateFileSelection() { updateDetails(); } /** * Updates the detail information */ private void updateDetails() { if (currentFiles.length == 0) { if (currentDir == null) return; final File folder = currentDir; final File[] files = currentDirList; // show directory information TableView.this.display.asyncExec(new Runnable() { public void run() { viewer.setFolderDetails(folder, files); } }); } else if (currentFiles.length == 1) { final File file = currentFiles[0]; // show individual file information TableView.this.display.asyncExec(new Runnable() { public void run() { viewer.setFileDetails(file); } }); } else { // show multi-selection file information final File[] files = currentFiles; TableView.this.display.asyncExec(new Runnable() { public void run() { viewer.setSelectionDetails(files); } }); } } } /** * 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; public void dragStart(DragSourceEvent event){ dndSelection = table.getSelection(); event.doit = dndSelection.length > 0; } public void dragFinished(DragSourceEvent event){ dndSelection = null; } public void dragSetData(DragSourceEvent event){ if (dndSelection == null || dndSelection.length == 0) return; if (! FileTransfer.getInstance().isSupportedType(event.dataType)) return; final String[] data = new String[dndSelection.length]; for (int i = 0; i < dndSelection.length; i++) { File file = (File) dndSelection[i].getData(TABLEITEMDATA_FILE); data[i] = file.getAbsolutePath(); } event.data = data; } }); 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) { inDrag = true; } public void dragLeave(DropTargetEvent event) { inDrag = false; } public void dragOver(DropTargetEvent event) { viewer.validateDropTarget(event, getTargetFile(event)); } public void dropAccept(DropTargetEvent event) { viewer.validateDropTarget(event, getTargetFile(event)); } public void drop(DropTargetEvent event) { viewer.performDrop(event, getTargetFile(event)); } private File getTargetFile(DropTargetEvent event) { // Determine the target File for the drop final TableItem item = table.getItem(table.toControl(new Point(event.x, event.y))); final File targetFile; if (item == null) { // We dropped on an unoccupied area of the table, use the table's root file targetFile = activeDir; } else { // We dropped on a particular item in the table, use the item's file targetFile = (File) item.getData(TABLEITEMDATA_FILE); } return targetFile; } }); return dropTarget; } /** * Listens to selectedDirectory events. * <p> * Displays the contents in the selected directory. * </p> * * @param dir the directory that was selected, null is not permitted */ /* package */ void selectedDirectory(File dir) { tableUpdateWorker.asyncUpdate(new Object[] { dir, null, new Boolean(false) }); } /** * Listens to selectedFiles events. * <p> * Updates the details to match the specified selection. * </p> * * @param files the array of selected files, null is not permitted */ /* package */ void selectedFiles(File[] files) { // tableUpdateWorker.asyncUpdate(new Object[] { null, files, new Boolean(false) }); if (files == null || files.length == 0) return; tableUpdateWorker.sync(); viewer.setFileDetails(files[0]); } /** * Listens to refreshFiles events. * <p> * Refreshes information about any files in the list and their children. * </p> * * @param files the list of files to be refreshed, null refreshes everything */ /* package */ void refreshFiles(File[] files) { tableUpdateWorker.asyncUpdate(new Object[] { null, null, new Boolean(true) }); } } \ No newline at end of file
+package org.eclipse.swt.examples.fileviewer; /* * (c) Copyright IBM Corp. 2000, 2001. * All Rights Reserved */ import org.eclipse.swt.*; 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.*; /** * A detailed directory listing */ public class TableView { private static final String TABLEITEMDATA_FILE = "TableItem.file"; // File: File associated with table row private final Table table; private final Label contentsOfLabel; private final Shell shell; private final Display display; private final FileViewer viewer; private File activeDir = null; private boolean inDrag = false; /* Worker thread control */ private UpdateWorker tableUpdateWorker = null; final String[] titles = new String [] { FileViewer.getResourceString("table.Name.title"), FileViewer.getResourceString("table.Size.title"), FileViewer.getResourceString("table.Type.title"), FileViewer.getResourceString("table.Modified.title") }; final int[] widths = new int[] {150, 60, 75, 150}; /** * Creates the file details table. * * @param theViewer the viewer to attach to * @param parent the parent control * @param layoutData the layout data */ public TableView(FileViewer theViewer, Composite parent, Object layoutData) { this.viewer = theViewer; shell = parent.getShell(); display = shell.getDisplay(); Composite composite = new Composite(parent, SWT.NONE); composite.setLayoutData(layoutData); GridLayout gridLayout = new GridLayout(); gridLayout.numColumns = 1; gridLayout.marginHeight = gridLayout.marginWidth = 2; gridLayout.horizontalSpacing = gridLayout.verticalSpacing = 0; composite.setLayout(gridLayout); contentsOfLabel = new Label(composite, SWT.BORDER); contentsOfLabel.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL)); table = new Table(composite, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.MULTI); table.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.FILL_VERTICAL)); for (int i = 0; i < titles.length; i++) { TableColumn column = new TableColumn(table, SWT.NONE); column.setText(titles [i]); column.setWidth(widths [i]); } table.setHeaderVisible(true); table.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { if (inDrag) return; viewer.notifySelectedFiles(getSelectedFiles()); } public void widgetDefaultSelected(SelectionEvent event) { if (inDrag) return; viewer.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); tableUpdateWorker = new TableUpdateWorker(); } /** * Dispose of allocated resources and shut down. */ public void dispose() { tableUpdateWorker.syncStop(); } /** * Updates the table with file information in the background. * <p> * It is designed such that it can be interrupted cleanly. Rather than put all the code * to manage this here, the balance has been pushed out to UpdateWorker so it can be re-used. * </p> */ private class TableUpdateWorker extends UpdateWorker { private File currentDir = null; private File[] currentDirList = null; public TableUpdateWorker() { super(TableView.this.display); } /** * Updates the table's contents * * @param data arguments in an Object[] * <ul> * <li>File data[0] dir the current directory, null does nothing * <li>Boolean data[1] if true, forces a refresh * </ul> */ protected void execute(Object data) { // Get arguments final Object[] args = (Object[]) data; final File argDir = (File) args[0]; final boolean argForce = ((Boolean) args[1]).booleanValue(); if (argDir == null) return; if (!argForce && currentDir.equals(argDir)) return; currentDir = argDir; if (argDir != null) updateDirectoryListing(); if (isCancelled()) { currentDir = null; currentDirList = null; } } /* * Note the use of 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. */ /** * Updates directory list */ private void updateDirectoryListing() { // Clear existing information TableView.this.display.syncExec(new Runnable() { public void run() { viewer.clearDetails(); contentsOfLabel.setText(FileViewer.getResourceString("details.ContentsOf.text", new Object[] { currentDir.getPath() })); table.removeAll(); table.setRedraw(false); TableView.this.activeDir = currentDir; // synchronize this } }); currentDirList = FileViewer.getDirectoryList(currentDir); // show directory information TableView.this.display.asyncExec(new Runnable() { public void run() { viewer.setFolderDetails(currentDir, currentDirList); } }); for (int i = 0; (! isCancelled()) && (i < currentDirList.length); i++) { final File theFile = currentDirList[i]; addFileDetails(currentDirList[i]); final boolean doIncrementalRefresh = ((i & 127) == 127); if (doIncrementalRefresh) TableView.this.display.syncExec(new Runnable() { public void run () { table.setRedraw(true); table.setRedraw(false); } }); } // Allow the table to refresh itself TableView.this.display.asyncExec(new Runnable() { public void run() { table.setRedraw(true); } }); } /** * Adds a file's detail information to the directory list */ private void addFileDetails(final File file) { final FileDisplayInfo displayInfo = viewer.getFileDisplayInfo(file); final String[] strings = new String[] { displayInfo.nameString, displayInfo.sizeString, displayInfo.typeString, displayInfo.dateString }; final Image image = displayInfo.iconImage; TableView.this.display.asyncExec(new Runnable() { public void run () { TableItem tableItem = new TableItem(table, 0); tableItem.setText(strings); tableItem.setImage(image); tableItem.setData(TABLEITEMDATA_FILE, file); } }); } } /** * 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; public void dragStart(DragSourceEvent event){ dndSelection = table.getSelection(); event.doit = dndSelection.length > 0; } public void dragFinished(DragSourceEvent event){ dndSelection = null; } public void dragSetData(DragSourceEvent event){ if (dndSelection == null || dndSelection.length == 0) return; if (! FileTransfer.getInstance().isSupportedType(event.dataType)) return; final String[] data = new String[dndSelection.length]; for (int i = 0; i < dndSelection.length; i++) { File file = (File) dndSelection[i].getData(TABLEITEMDATA_FILE); data[i] = file.getAbsolutePath(); } event.data = data; } }); 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) { inDrag = true; } public void dragLeave(DropTargetEvent event) { inDrag = false; } public void dragOver(DropTargetEvent event) { viewer.validateDropTarget(event, getTargetFile(event)); } public void dropAccept(DropTargetEvent event) { viewer.validateDropTarget(event, getTargetFile(event)); } public void drop(DropTargetEvent event) { viewer.performDrop(event, getTargetFile(event)); } private File getTargetFile(DropTargetEvent event) { // Determine the target File for the drop final TableItem item = table.getItem(table.toControl(new Point(event.x, event.y))); final File targetFile; if (item == null) { // We dropped on an unoccupied area of the table, use the table's root file targetFile = activeDir; } else { // We dropped on a particular item in the table, use the item's file targetFile = (File) item.getData(TABLEITEMDATA_FILE); } return targetFile; } }); return dropTarget; } /** * Listens to selectedDirectory events. * <p> * Displays the contents in the selected directory. * </p> * * @param dir the directory that was selected, null is not permitted */ /* package */ void selectedDirectory(File dir) { tableUpdateWorker.asyncUpdate(new Object[] { dir, new Boolean(false) }); } /** * Listens to selectedFiles events. * <p> * Updates the details to match the specified selection. * </p> * * @param files the array of selected files, null is not permitted */ /* package */ void selectedFiles(File[] files) { if (files == null) return; tableUpdateWorker.sync(); if (files.length == 1) { viewer.setFileDetails(files[0]); } else { viewer.setSelectionDetails(files); } } /** * Listens to refreshFiles events. * <p> * Refreshes information about any files in the list and their children. * </p> * * @param files the list of files to be refreshed, null refreshes everything */ /* package */ void refreshFiles(File[] files) { tableUpdateWorker.asyncUpdate(new Object[] { null, new Boolean(true) }); } } \ No newline at end of file
diff --git a/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/fileviewer/TableView.java b/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/fileviewer/TableView.java
index a21fb08acc..8f08111ed5 100755
--- a/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/fileviewer/TableView.java
+++ b/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/fileviewer/TableView.java
@@ -1 +1 @@
-package org.eclipse.swt.examples.fileviewer; /* * (c) Copyright IBM Corp. 2000, 2001. * All Rights Reserved */ import org.eclipse.swt.*; 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.*; /** * A detailed directory listing */ public class TableView { private static final String TABLEITEMDATA_FILE = "TableItem.file"; // File: File associated with table row private final Table table; private final Label contentsOfLabel; private final Shell shell; private final Display display; private final FileViewer viewer; private File activeDir = null; private boolean inDrag = false; /* Worker thread control */ private UpdateWorker tableUpdateWorker = null; final String[] titles = new String [] { FileViewer.getResourceString("table.Name.title"), FileViewer.getResourceString("table.Size.title"), FileViewer.getResourceString("table.Type.title"), FileViewer.getResourceString("table.Modified.title") }; final int[] widths = new int[] {150, 60, 75, 150}; /** * Creates the file details table. * * @param theViewer the viewer to attach to * @param parent the parent control * @param layoutData the layout data */ public TableView(FileViewer theViewer, Composite parent, Object layoutData) { this.viewer = theViewer; shell = parent.getShell(); display = shell.getDisplay(); Composite composite = new Composite(parent, SWT.NONE); composite.setLayoutData(layoutData); GridLayout gridLayout = new GridLayout(); gridLayout.numColumns = 1; gridLayout.marginHeight = gridLayout.marginWidth = 2; gridLayout.horizontalSpacing = gridLayout.verticalSpacing = 0; composite.setLayout(gridLayout); contentsOfLabel = new Label(composite, SWT.BORDER); contentsOfLabel.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL)); table = new Table(composite, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.MULTI); table.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.FILL_VERTICAL)); for (int i = 0; i < titles.length; i++) { TableColumn column = new TableColumn(table, SWT.NONE); column.setText(titles [i]); column.setWidth(widths [i]); } table.setHeaderVisible(true); table.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { if (inDrag) return; viewer.notifySelectedFiles(getSelectedFiles()); } public void widgetDefaultSelected(SelectionEvent event) { if (inDrag) return; viewer.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); tableUpdateWorker = new TableUpdateWorker(); } /** * Dispose of allocated resources and shut down. */ public void dispose() { tableUpdateWorker.syncStop(); } /** * Updates the table with file information in the background. * <p> * It is designed such that it can be interrupted cleanly. Rather than put all the code * to manage this here, the balance has been pushed out to UpdateWorker so it can be re-used. * </p> */ private class TableUpdateWorker extends UpdateWorker { private File currentDir = null; private File[] currentFiles = null; private File[] currentDirList = null; public TableUpdateWorker() { super(TableView.this.display); } /** * Updates the table's contents * * @param data arguments in an Object[] * <ul> * <li>File data[0] dir the current directory, null does nothing * <li>File[] data[1] the list of files to select, null does nothing * <li>Boolean data[2] if true, forces a refresh * </ul> */ protected void execute(Object data) { // Get arguments final Object[] args = (Object[]) data; final File argDir = (File) args[0]; final File[] argFiles = (File[]) args[1]; final boolean argForce = ((Boolean) args[2]).booleanValue(); // Update current state if (argDir != null) currentDir = argDir; if (argFiles != null) currentFiles = argFiles; else if (argDir != null) currentFiles = new File[0]; // Perform necessary refreshing if (argDir != null) updateDirectoryListing(); else if (argFiles != null) updateFileSelection(); if (isCancelled()) { currentFiles = null; currentDir = null; currentDirList = null; } } /* * Note the use of 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. */ /** * Updates directory list */ private void updateDirectoryListing() { // Clear existing information TableView.this.display.syncExec(new Runnable() { public void run() { viewer.clearDetails(); contentsOfLabel.setText(FileViewer.getResourceString("details.ContentsOf.text", new Object[] { currentDir.getPath() })); table.removeAll(); table.setRedraw(false); TableView.this.activeDir = currentDir; // synchronize this } }); currentDirList = FileViewer.getDirectoryList(currentDir); updateDetails(); for (int i = 0; (! isCancelled()) && (i < currentDirList.length); i++) { final File theFile = currentDirList[i]; addFileDetails(currentDirList[i]); final boolean doIncrementalRefresh = ((i & 127) == 127); if (doIncrementalRefresh) TableView.this.display.syncExec(new Runnable() { public void run () { table.setRedraw(true); table.setRedraw(false); } }); } // Allow the table to refresh itself TableView.this.display.asyncExec(new Runnable() { public void run() { table.setRedraw(true); } }); } /** * Adds a file's detail information to the directory list */ private void addFileDetails(final File file) { final FileDisplayInfo displayInfo = viewer.getFileDisplayInfo(file); final String[] strings = new String[] { displayInfo.nameString, displayInfo.sizeString, displayInfo.typeString, displayInfo.dateString }; final Image image = displayInfo.iconImage; TableView.this.display.asyncExec(new Runnable() { public void run () { TableItem tableItem = new TableItem(table, 0); tableItem.setText(strings); tableItem.setImage(image); tableItem.setData(TABLEITEMDATA_FILE, file); } }); } /** * Updates the current file selection */ private void updateFileSelection() { updateDetails(); } /** * Updates the detail information */ private void updateDetails() { if (currentFiles.length == 0) { if (currentDir == null) return; final File folder = currentDir; final File[] files = currentDirList; // show directory information TableView.this.display.asyncExec(new Runnable() { public void run() { viewer.setFolderDetails(folder, files); } }); } else if (currentFiles.length == 1) { final File file = currentFiles[0]; // show individual file information TableView.this.display.asyncExec(new Runnable() { public void run() { viewer.setFileDetails(file); } }); } else { // show multi-selection file information final File[] files = currentFiles; TableView.this.display.asyncExec(new Runnable() { public void run() { viewer.setSelectionDetails(files); } }); } } } /** * 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; public void dragStart(DragSourceEvent event){ dndSelection = table.getSelection(); event.doit = dndSelection.length > 0; } public void dragFinished(DragSourceEvent event){ dndSelection = null; } public void dragSetData(DragSourceEvent event){ if (dndSelection == null || dndSelection.length == 0) return; if (! FileTransfer.getInstance().isSupportedType(event.dataType)) return; final String[] data = new String[dndSelection.length]; for (int i = 0; i < dndSelection.length; i++) { File file = (File) dndSelection[i].getData(TABLEITEMDATA_FILE); data[i] = file.getAbsolutePath(); } event.data = data; } }); 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) { inDrag = true; } public void dragLeave(DropTargetEvent event) { inDrag = false; } public void dragOver(DropTargetEvent event) { viewer.validateDropTarget(event, getTargetFile(event)); } public void dropAccept(DropTargetEvent event) { viewer.validateDropTarget(event, getTargetFile(event)); } public void drop(DropTargetEvent event) { viewer.performDrop(event, getTargetFile(event)); } private File getTargetFile(DropTargetEvent event) { // Determine the target File for the drop final TableItem item = table.getItem(table.toControl(new Point(event.x, event.y))); final File targetFile; if (item == null) { // We dropped on an unoccupied area of the table, use the table's root file targetFile = activeDir; } else { // We dropped on a particular item in the table, use the item's file targetFile = (File) item.getData(TABLEITEMDATA_FILE); } return targetFile; } }); return dropTarget; } /** * Listens to selectedDirectory events. * <p> * Displays the contents in the selected directory. * </p> * * @param dir the directory that was selected, null is not permitted */ /* package */ void selectedDirectory(File dir) { tableUpdateWorker.asyncUpdate(new Object[] { dir, null, new Boolean(false) }); } /** * Listens to selectedFiles events. * <p> * Updates the details to match the specified selection. * </p> * * @param files the array of selected files, null is not permitted */ /* package */ void selectedFiles(File[] files) { // tableUpdateWorker.asyncUpdate(new Object[] { null, files, new Boolean(false) }); if (files == null || files.length == 0) return; tableUpdateWorker.sync(); viewer.setFileDetails(files[0]); } /** * Listens to refreshFiles events. * <p> * Refreshes information about any files in the list and their children. * </p> * * @param files the list of files to be refreshed, null refreshes everything */ /* package */ void refreshFiles(File[] files) { tableUpdateWorker.asyncUpdate(new Object[] { null, null, new Boolean(true) }); } } \ No newline at end of file
+package org.eclipse.swt.examples.fileviewer; /* * (c) Copyright IBM Corp. 2000, 2001. * All Rights Reserved */ import org.eclipse.swt.*; 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.*; /** * A detailed directory listing */ public class TableView { private static final String TABLEITEMDATA_FILE = "TableItem.file"; // File: File associated with table row private final Table table; private final Label contentsOfLabel; private final Shell shell; private final Display display; private final FileViewer viewer; private File activeDir = null; private boolean inDrag = false; /* Worker thread control */ private UpdateWorker tableUpdateWorker = null; final String[] titles = new String [] { FileViewer.getResourceString("table.Name.title"), FileViewer.getResourceString("table.Size.title"), FileViewer.getResourceString("table.Type.title"), FileViewer.getResourceString("table.Modified.title") }; final int[] widths = new int[] {150, 60, 75, 150}; /** * Creates the file details table. * * @param theViewer the viewer to attach to * @param parent the parent control * @param layoutData the layout data */ public TableView(FileViewer theViewer, Composite parent, Object layoutData) { this.viewer = theViewer; shell = parent.getShell(); display = shell.getDisplay(); Composite composite = new Composite(parent, SWT.NONE); composite.setLayoutData(layoutData); GridLayout gridLayout = new GridLayout(); gridLayout.numColumns = 1; gridLayout.marginHeight = gridLayout.marginWidth = 2; gridLayout.horizontalSpacing = gridLayout.verticalSpacing = 0; composite.setLayout(gridLayout); contentsOfLabel = new Label(composite, SWT.BORDER); contentsOfLabel.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL)); table = new Table(composite, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.MULTI); table.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.FILL_VERTICAL)); for (int i = 0; i < titles.length; i++) { TableColumn column = new TableColumn(table, SWT.NONE); column.setText(titles [i]); column.setWidth(widths [i]); } table.setHeaderVisible(true); table.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { if (inDrag) return; viewer.notifySelectedFiles(getSelectedFiles()); } public void widgetDefaultSelected(SelectionEvent event) { if (inDrag) return; viewer.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); tableUpdateWorker = new TableUpdateWorker(); } /** * Dispose of allocated resources and shut down. */ public void dispose() { tableUpdateWorker.syncStop(); } /** * Updates the table with file information in the background. * <p> * It is designed such that it can be interrupted cleanly. Rather than put all the code * to manage this here, the balance has been pushed out to UpdateWorker so it can be re-used. * </p> */ private class TableUpdateWorker extends UpdateWorker { private File currentDir = null; private File[] currentDirList = null; public TableUpdateWorker() { super(TableView.this.display); } /** * Updates the table's contents * * @param data arguments in an Object[] * <ul> * <li>File data[0] dir the current directory, null does nothing * <li>Boolean data[1] if true, forces a refresh * </ul> */ protected void execute(Object data) { // Get arguments final Object[] args = (Object[]) data; final File argDir = (File) args[0]; final boolean argForce = ((Boolean) args[1]).booleanValue(); if (argDir == null) return; if (!argForce && currentDir.equals(argDir)) return; currentDir = argDir; if (argDir != null) updateDirectoryListing(); if (isCancelled()) { currentDir = null; currentDirList = null; } } /* * Note the use of 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. */ /** * Updates directory list */ private void updateDirectoryListing() { // Clear existing information TableView.this.display.syncExec(new Runnable() { public void run() { viewer.clearDetails(); contentsOfLabel.setText(FileViewer.getResourceString("details.ContentsOf.text", new Object[] { currentDir.getPath() })); table.removeAll(); table.setRedraw(false); TableView.this.activeDir = currentDir; // synchronize this } }); currentDirList = FileViewer.getDirectoryList(currentDir); // show directory information TableView.this.display.asyncExec(new Runnable() { public void run() { viewer.setFolderDetails(currentDir, currentDirList); } }); for (int i = 0; (! isCancelled()) && (i < currentDirList.length); i++) { final File theFile = currentDirList[i]; addFileDetails(currentDirList[i]); final boolean doIncrementalRefresh = ((i & 127) == 127); if (doIncrementalRefresh) TableView.this.display.syncExec(new Runnable() { public void run () { table.setRedraw(true); table.setRedraw(false); } }); } // Allow the table to refresh itself TableView.this.display.asyncExec(new Runnable() { public void run() { table.setRedraw(true); } }); } /** * Adds a file's detail information to the directory list */ private void addFileDetails(final File file) { final FileDisplayInfo displayInfo = viewer.getFileDisplayInfo(file); final String[] strings = new String[] { displayInfo.nameString, displayInfo.sizeString, displayInfo.typeString, displayInfo.dateString }; final Image image = displayInfo.iconImage; TableView.this.display.asyncExec(new Runnable() { public void run () { TableItem tableItem = new TableItem(table, 0); tableItem.setText(strings); tableItem.setImage(image); tableItem.setData(TABLEITEMDATA_FILE, file); } }); } } /** * 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; public void dragStart(DragSourceEvent event){ dndSelection = table.getSelection(); event.doit = dndSelection.length > 0; } public void dragFinished(DragSourceEvent event){ dndSelection = null; } public void dragSetData(DragSourceEvent event){ if (dndSelection == null || dndSelection.length == 0) return; if (! FileTransfer.getInstance().isSupportedType(event.dataType)) return; final String[] data = new String[dndSelection.length]; for (int i = 0; i < dndSelection.length; i++) { File file = (File) dndSelection[i].getData(TABLEITEMDATA_FILE); data[i] = file.getAbsolutePath(); } event.data = data; } }); 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) { inDrag = true; } public void dragLeave(DropTargetEvent event) { inDrag = false; } public void dragOver(DropTargetEvent event) { viewer.validateDropTarget(event, getTargetFile(event)); } public void dropAccept(DropTargetEvent event) { viewer.validateDropTarget(event, getTargetFile(event)); } public void drop(DropTargetEvent event) { viewer.performDrop(event, getTargetFile(event)); } private File getTargetFile(DropTargetEvent event) { // Determine the target File for the drop final TableItem item = table.getItem(table.toControl(new Point(event.x, event.y))); final File targetFile; if (item == null) { // We dropped on an unoccupied area of the table, use the table's root file targetFile = activeDir; } else { // We dropped on a particular item in the table, use the item's file targetFile = (File) item.getData(TABLEITEMDATA_FILE); } return targetFile; } }); return dropTarget; } /** * Listens to selectedDirectory events. * <p> * Displays the contents in the selected directory. * </p> * * @param dir the directory that was selected, null is not permitted */ /* package */ void selectedDirectory(File dir) { tableUpdateWorker.asyncUpdate(new Object[] { dir, new Boolean(false) }); } /** * Listens to selectedFiles events. * <p> * Updates the details to match the specified selection. * </p> * * @param files the array of selected files, null is not permitted */ /* package */ void selectedFiles(File[] files) { if (files == null) return; tableUpdateWorker.sync(); if (files.length == 1) { viewer.setFileDetails(files[0]); } else { viewer.setSelectionDetails(files); } } /** * Listens to refreshFiles events. * <p> * Refreshes information about any files in the list and their children. * </p> * * @param files the list of files to be refreshed, null refreshes everything */ /* package */ void refreshFiles(File[] files) { tableUpdateWorker.asyncUpdate(new Object[] { null, new Boolean(true) }); } } \ No newline at end of file

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