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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/graphics/Device.java')
| -rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/graphics/Device.java | 748 |
1 files changed, 748 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/graphics/Device.java b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/graphics/Device.java new file mode 100755 index 0000000000..932e1d49f6 --- /dev/null +++ b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/graphics/Device.java @@ -0,0 +1,748 @@ +/******************************************************************************* + * Copyright (c) 2000, 2009 IBM Corporation and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * IBM Corporation - initial API and implementation + *******************************************************************************/ +package org.eclipse.swt.graphics; + +import org.eclipse.swt.*; +import org.eclipse.swt.internal.Compatibility; +import org.eclipse.swt.internal.cocoa.*; + +/** + * This class is the abstract superclass of all device objects, + * such as the Display device and the Printer device. Devices + * can have a graphics context (GC) created for them, and they + * can be drawn on by sending messages to the associated GC. + * + * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> + */ +public abstract class Device implements Drawable { + + /* Debugging */ + public static boolean DEBUG; + boolean debug = DEBUG; + boolean tracking = DEBUG; + Error [] errors; + Object [] objects; + Object trackingLock; + + /* Disposed flag */ + boolean disposed, warnings; + + Color COLOR_BLACK, COLOR_DARK_RED, COLOR_DARK_GREEN, COLOR_DARK_YELLOW, COLOR_DARK_BLUE; + Color COLOR_DARK_MAGENTA, COLOR_DARK_CYAN, COLOR_GRAY, COLOR_DARK_GRAY, COLOR_RED; + Color COLOR_GREEN, COLOR_YELLOW, COLOR_BLUE, COLOR_MAGENTA, COLOR_CYAN, COLOR_WHITE; + + /* System Font */ + Font systemFont; + + NSMutableParagraphStyle paragraphStyle; + + /* Device DPI */ + Point dpi; + + /* + * TEMPORARY CODE. When a graphics object is + * created and the device parameter is null, + * the current Display is used. This presents + * a problem because SWT graphics does not + * reference classes in SWT widgets. The correct + * fix is to remove this feature. Unfortunately, + * too many application programs rely on this + * feature. + */ + protected static Device CurrentDevice; + protected static Runnable DeviceFinder; + static { + try { + Class.forName ("org.eclipse.swt.widgets.Display"); + } catch (ClassNotFoundException e) {} + } + +/* +* TEMPORARY CODE. +*/ +static synchronized Device getDevice () { + if (DeviceFinder != null) DeviceFinder.run(); + Device device = CurrentDevice; + CurrentDevice = null; + return device; +} + +/** + * Constructs a new instance of this class. + * <p> + * You must dispose the device when it is no longer required. + * </p> + * + * @see #create + * @see #init + * + * @since 3.1 + */ +public Device() { + this(null); +} + +/** + * Constructs a new instance of this class. + * <p> + * You must dispose the device when it is no longer required. + * </p> + * + * @param data the DeviceData which describes the receiver + * + * @see #create + * @see #init + * @see DeviceData + */ +public Device(DeviceData data) { + synchronized (Device.class) { + if (data != null) { + debug = data.debug; + tracking = data.tracking; + } + if (tracking) { + errors = new Error [128]; + objects = new Object [128]; + trackingLock = new Object (); + } + if (NSThread.isMainThread()) { + NSAutoreleasePool pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); + NSThread nsthread = NSThread.currentThread(); + NSMutableDictionary dictionary = nsthread.threadDictionary(); + NSString key = NSString.stringWith("SWT_NSAutoreleasePool"); + id obj = dictionary.objectForKey(key); + if (obj == null) { + NSNumber nsnumber = NSNumber.numberWithInteger(pool.id); + dictionary.setObject(nsnumber, key); + } else { + pool.release(); + } + } + //check and create pool + create (data); + init (); + } +} + +/** + * Throws an <code>SWTException</code> if the receiver can not + * be accessed by the caller. This may include both checks on + * the state of the receiver and more generally on the entire + * execution context. This method <em>should</em> be called by + * device implementors to enforce the standard SWT invariants. + * <p> + * Currently, it is an error to invoke any method (other than + * <code>isDisposed()</code> and <code>dispose()</code>) on a + * device that has had its <code>dispose()</code> method called. + * </p><p> + * In future releases of SWT, there may be more or fewer error + * checks and exceptions may be thrown for different reasons. + * <p> + * + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +protected void checkDevice () { + if (disposed) SWT.error(SWT.ERROR_DEVICE_DISPOSED); +} + +/** + * Creates the device in the operating system. If the device + * does not have a handle, this method may do nothing depending + * on the device. + * <p> + * This method is called before <code>init</code>. + * </p><p> + * Subclasses are supposed to reimplement this method and not + * call the <code>super</code> implementation. + * </p> + * + * @param data the DeviceData which describes the receiver + * + * @see #init + */ +protected void create (DeviceData data) { +} + +/** + * Disposes of the operating system resources associated with + * the receiver. After this method has been invoked, the receiver + * will answer <code>true</code> when sent the message + * <code>isDisposed()</code>. + * + * @see #release + * @see #destroy + * @see #checkDevice + */ +public void dispose () { + synchronized (Device.class) { + if (isDisposed()) return; + checkDevice (); + release (); + destroy (); + disposed = true; + if (tracking) { + synchronized (trackingLock) { + printErrors (); + objects = null; + errors = null; + trackingLock = null; + } + } + } +} + +void dispose_Object (Object object) { + synchronized (trackingLock) { + for (int i=0; i<objects.length; i++) { + if (objects [i] == object) { + objects [i] = null; + errors [i] = null; + return; + } + } + } +} + +/** + * Destroys the device in the operating system and releases + * the device's handle. If the device does not have a handle, + * this method may do nothing depending on the device. + * <p> + * This method is called after <code>release</code>. + * </p><p> + * Subclasses are supposed to reimplement this method and not + * call the <code>super</code> implementation. + * </p> + * + * @see #dispose + * @see #release + */ +protected void destroy () { +} + +/** + * Returns a rectangle describing the receiver's size and location. + * + * @return the bounding rectangle + * + * @exception SWTException <ul> + * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public Rectangle getBounds () { + checkDevice (); + NSRect frame = getPrimaryScreen().frame(); + return new Rectangle((int)frame.x, (int)frame.y, (int)frame.width, (int)frame.height); +} + +/** + * Returns a <code>DeviceData</code> based on the receiver. + * Modifications made to this <code>DeviceData</code> will not + * affect the receiver. + * + * @return a <code>DeviceData</code> containing the device's data and attributes + * + * @exception SWTException <ul> + * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see DeviceData + */ +public DeviceData getDeviceData () { + checkDevice(); + DeviceData data = new DeviceData (); + data.debug = debug; + data.tracking = tracking; + if (tracking) { + synchronized (trackingLock) { + int count = 0, length = objects.length; + for (int i=0; i<length; i++) { + if (objects [i] != null) count++; + } + int index = 0; + data.objects = new Object [count]; + data.errors = new Error [count]; + for (int i=0; i<length; i++) { + if (objects [i] != null) { + data.objects [index] = objects [i]; + data.errors [index] = errors [i]; + index++; + } + } + } + } else { + data.objects = new Object [0]; + data.errors = new Error [0]; + } + return data; +} + +/** + * Returns a rectangle which describes the area of the + * receiver which is capable of displaying data. + * + * @return the client area + * + * @exception SWTException <ul> + * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see #getBounds + */ +public Rectangle getClientArea () { + checkDevice (); + return getBounds (); +} + +/** + * Returns the bit depth of the screen, which is the number of + * bits it takes to represent the number of unique colors that + * the screen is currently capable of displaying. This number + * will typically be one of 1, 8, 15, 16, 24 or 32. + * + * @return the depth of the screen + * + * @exception SWTException <ul> + * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public int getDepth () { + checkDevice (); + return (int)/*64*/OS.NSBitsPerPixelFromDepth(getPrimaryScreen().depth()); +} + +/** + * Returns a point whose x coordinate is the horizontal + * dots per inch of the display, and whose y coordinate + * is the vertical dots per inch of the display. + * + * @return the horizontal and vertical DPI + * + * @exception SWTException <ul> + * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public Point getDPI () { + checkDevice (); + return getScreenDPI(); +} + +NSScreen getPrimaryScreen () { + NSArray screens = NSScreen.screens(); + return new NSScreen(screens.objectAtIndex(0)); +} + +/** + * Returns <code>FontData</code> objects which describe + * the fonts that match the given arguments. If the + * <code>faceName</code> is null, all fonts will be returned. + * + * @param faceName the name of the font to look for, or null + * @param scalable if true only scalable fonts are returned, otherwise only non-scalable fonts are returned. + * @return the matching font data + * + * @exception SWTException <ul> + * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public FontData[] getFontList (String faceName, boolean scalable) { + checkDevice (); + if (!scalable) return new FontData[0]; + int count = 0; + NSArray families = NSFontManager.sharedFontManager().availableFontFamilies(); + int /*long*/ familyCount = families.count(); + FontData[] fds = new FontData[100]; + for (int i = 0; i < familyCount; i++) { + NSString nsFamily = new NSString(families.objectAtIndex(i)); + String name = nsFamily.getString(); + NSArray fonts = NSFontManager.sharedFontManager().availableMembersOfFontFamily(nsFamily); + int fontCount = (int)/*64*/fonts.count(); + for (int j = 0; j < fontCount; j++) { + NSArray fontDetails = new NSArray(fonts.objectAtIndex(j)); + String nsName = new NSString(fontDetails.objectAtIndex(0)).getString(); + int /*long*/ weight = new NSNumber(fontDetails.objectAtIndex(2)).integerValue(); + int /*long*/ traits = new NSNumber(fontDetails.objectAtIndex(3)).integerValue(); + int style = SWT.NORMAL; + if ((traits & OS.NSItalicFontMask) != 0) style |= SWT.ITALIC; + if (weight == 9) style |= SWT.BOLD; + if (faceName == null || Compatibility.equalsIgnoreCase(faceName, name)) { + FontData data = new FontData(name, 0, style); + data.nsName = nsName; + if (count == fds.length) { + FontData[] newFds = new FontData[fds.length + 100]; + System.arraycopy(fds, 0, newFds, 0, fds.length); + fds = newFds; + } + fds[count++] = data; + } + } + } + if (count == fds.length) return fds; + FontData[] result = new FontData[count]; + System.arraycopy(fds, 0, result, 0, count); + return result; +} + +Point getScreenDPI () { + NSDictionary dictionary = getPrimaryScreen().deviceDescription(); + NSValue value = new NSValue(dictionary.objectForKey(new id(OS.NSDeviceResolution())).id); + NSSize size = value.sizeValue(); + return new Point((int)size.width, (int)size.height); +} + +/** + * Returns the matching standard color for the given + * constant, which should be one of the color constants + * specified in class <code>SWT</code>. Any value other + * than one of the SWT color constants which is passed + * in will result in the color black. This color should + * not be freed because it was allocated by the system, + * not the application. + * + * @param id the color constant + * @return the matching color + * + * @exception SWTException <ul> + * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see SWT + */ +public Color getSystemColor (int id) { + checkDevice (); + switch (id) { + case SWT.COLOR_BLACK: return COLOR_BLACK; + case SWT.COLOR_DARK_RED: return COLOR_DARK_RED; + case SWT.COLOR_DARK_GREEN: return COLOR_DARK_GREEN; + case SWT.COLOR_DARK_YELLOW: return COLOR_DARK_YELLOW; + case SWT.COLOR_DARK_BLUE: return COLOR_DARK_BLUE; + case SWT.COLOR_DARK_MAGENTA: return COLOR_DARK_MAGENTA; + case SWT.COLOR_DARK_CYAN: return COLOR_DARK_CYAN; + case SWT.COLOR_GRAY: return COLOR_GRAY; + case SWT.COLOR_DARK_GRAY: return COLOR_DARK_GRAY; + case SWT.COLOR_RED: return COLOR_RED; + case SWT.COLOR_GREEN: return COLOR_GREEN; + case SWT.COLOR_YELLOW: return COLOR_YELLOW; + case SWT.COLOR_BLUE: return COLOR_BLUE; + case SWT.COLOR_MAGENTA: return COLOR_MAGENTA; + case SWT.COLOR_CYAN: return COLOR_CYAN; + case SWT.COLOR_WHITE: return COLOR_WHITE; + } + return COLOR_BLACK; +} + +/** + * Returns a reasonable font for applications to use. + * On some platforms, this will match the "default font" + * or "system font" if such can be found. This font + * should not be freed because it was allocated by the + * system, not the application. + * <p> + * Typically, applications which want the default look + * should simply not set the font on the widgets they + * create. Widgets are always created with the correct + * default font for the class of user-interface component + * they represent. + * </p> + * + * @return a font + * + * @exception SWTException <ul> + * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public Font getSystemFont () { + checkDevice (); + return systemFont; +} + +/** + * Returns <code>true</code> if the underlying window system prints out + * warning messages on the console, and <code>setWarnings</code> + * had previously been called with <code>true</code>. + * + * @return <code>true</code>if warnings are being handled, and <code>false</code> otherwise + * + * @exception SWTException <ul> + * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public boolean getWarnings () { + checkDevice (); + return warnings; +} + +/** + * Initializes any internal resources needed by the + * device. + * <p> + * This method is called after <code>create</code>. + * </p><p> + * If subclasses reimplement this method, they must + * call the <code>super</code> implementation. + * </p> + * + * @see #create + */ +protected void init () { + /* Create the standard colors */ + COLOR_BLACK = new Color (this, 0,0,0); + COLOR_DARK_RED = new Color (this, 0x80,0,0); + COLOR_DARK_GREEN = new Color (this, 0,0x80,0); + COLOR_DARK_YELLOW = new Color (this, 0x80,0x80,0); + COLOR_DARK_BLUE = new Color (this, 0,0,0x80); + COLOR_DARK_MAGENTA = new Color (this, 0x80,0,0x80); + COLOR_DARK_CYAN = new Color (this, 0,0x80,0x80); + COLOR_GRAY = new Color (this, 0xC0,0xC0,0xC0); + COLOR_DARK_GRAY = new Color (this, 0x80,0x80,0x80); + COLOR_RED = new Color (this, 0xFF,0,0); + COLOR_GREEN = new Color (this, 0,0xFF,0); + COLOR_YELLOW = new Color (this, 0xFF,0xFF,0); + COLOR_BLUE = new Color (this, 0,0,0xFF); + COLOR_MAGENTA = new Color (this, 0xFF,0,0xFF); + COLOR_CYAN = new Color (this, 0,0xFF,0xFF); + COLOR_WHITE = new Color (this, 0xFF,0xFF,0xFF); + + paragraphStyle = (NSMutableParagraphStyle)new NSMutableParagraphStyle().alloc().init(); + paragraphStyle.setAlignment(OS.NSLeftTextAlignment); + paragraphStyle.setLineBreakMode(OS.NSLineBreakByClipping); + NSArray tabs = new NSArray(new NSArray().alloc().init()); + paragraphStyle.setTabStops(tabs); + tabs.release(); + + /* Initialize the system font slot */ + boolean smallFonts = System.getProperty("org.eclipse.swt.internal.carbon.smallFonts") != null; + float /*double*/ systemFontSize = smallFonts ? NSFont.smallSystemFontSize() : NSFont.systemFontSize(); + Point dpi = this.dpi = getDPI(), screenDPI = getScreenDPI(); + NSFont font = NSFont.systemFontOfSize(systemFontSize * dpi.y / screenDPI.y); + font.retain(); + systemFont = Font.cocoa_new(this, font); +} + +/** + * Invokes platform specific functionality to allocate a new GC handle. + * <p> + * <b>IMPORTANT:</b> This method is <em>not</em> part of the public + * API for <code>Device</code>. It is marked public only so that it + * can be shared within the packages provided by SWT. It is not + * available on all platforms, and should never be called from + * application code. + * </p> + * + * @param data the platform specific GC data + * @return the platform specific GC handle + */ +public abstract int /*long*/ internal_new_GC (GCData data); + +/** + * Invokes platform specific functionality to dispose a GC handle. + * <p> + * <b>IMPORTANT:</b> This method is <em>not</em> part of the public + * API for <code>Device</code>. It is marked public only so that it + * can be shared within the packages provided by SWT. It is not + * available on all platforms, and should never be called from + * application code. + * </p> + * + * @param hDC the platform specific GC handle + * @param data the platform specific GC data + */ +public abstract void internal_dispose_GC (int /*long*/ handle, GCData data); + +/** + * Returns <code>true</code> if the device has been disposed, + * and <code>false</code> otherwise. + * <p> + * This method gets the dispose state for the device. + * When a device has been disposed, it is an error to + * invoke any other method using the device. + * + * @return <code>true</code> when the device is disposed and <code>false</code> otherwise + */ +public boolean isDisposed () { + synchronized (Device.class) { + return disposed; + } +} + +/** + * Loads the font specified by a file. The font will be + * present in the list of fonts available to the application. + * + * @param path the font file path + * @return whether the font was successfully loaded + * + * @exception SWTException <ul> + * <li>ERROR_NULL_ARGUMENT - if path is null</li> + * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see Font + * + * @since 3.3 + */ +public boolean loadFont (String path) { + checkDevice(); + if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + boolean result = false; + NSString nsPath = NSString.stringWith(path); + int /*long*/ fsRepresentation = nsPath.fileSystemRepresentation(); + + if (fsRepresentation != 0) { + byte [] fsRef = new byte [80]; + boolean [] isDirectory = new boolean[1]; + if (OS.FSPathMakeRef (fsRepresentation, fsRef, isDirectory) == OS.noErr) { + result = OS.ATSFontActivateFromFileReference (fsRef, OS.kATSFontContextLocal, OS.kATSFontFormatUnspecified, 0, OS.kATSOptionFlagsDefault, null) == OS.noErr; + } + } + + return result; +} + +void new_Object (Object object) { + synchronized (trackingLock) { + for (int i=0; i<objects.length; i++) { + if (objects [i] == null) { + objects [i] = object; + errors [i] = new Error (); + return; + } + } + Object [] newObjects = new Object [objects.length + 128]; + System.arraycopy (objects, 0, newObjects, 0, objects.length); + newObjects [objects.length] = object; + objects = newObjects; + Error [] newErrors = new Error [errors.length + 128]; + System.arraycopy (errors, 0, newErrors, 0, errors.length); + newErrors [errors.length] = new Error (); + errors = newErrors; + } +} + +void printErrors () { + if (!DEBUG) return; + if (tracking) { + synchronized (trackingLock) { + if (objects == null || errors == null) return; + int objectCount = 0; + int colors = 0, cursors = 0, fonts = 0, gcs = 0, images = 0; + int paths = 0, patterns = 0, regions = 0, textLayouts = 0, transforms = 0; + for (int i=0; i<objects.length; i++) { + Object object = objects [i]; + if (object != null) { + objectCount++; + if (object instanceof Color) colors++; + if (object instanceof Cursor) cursors++; + if (object instanceof Font) fonts++; + if (object instanceof GC) gcs++; + if (object instanceof Image) images++; + if (object instanceof Path) paths++; + if (object instanceof Pattern) patterns++; + if (object instanceof Region) regions++; + if (object instanceof TextLayout) textLayouts++; + if (object instanceof Transform) transforms++; + } + } + if (objectCount != 0) { + String string = "Summary: "; + if (colors != 0) string += colors + " Color(s), "; + if (cursors != 0) string += cursors + " Cursor(s), "; + if (fonts != 0) string += fonts + " Font(s), "; + if (gcs != 0) string += gcs + " GC(s), "; + if (images != 0) string += images + " Image(s), "; + if (paths != 0) string += paths + " Path(s), "; + if (patterns != 0) string += patterns + " Pattern(s), "; + if (regions != 0) string += regions + " Region(s), "; + if (textLayouts != 0) string += textLayouts + " TextLayout(s), "; + if (transforms != 0) string += transforms + " Transforms(s), "; + if (string.length () != 0) { + string = string.substring (0, string.length () - 2); + System.out.println (string); + } + for (int i=0; i<errors.length; i++) { + if (errors [i] != null) errors [i].printStackTrace (System.out); + } + } + } + } +} + +/** + * Releases any internal resources back to the operating + * system and clears all fields except the device handle. + * <p> + * When a device is destroyed, resources that were acquired + * on behalf of the programmer need to be returned to the + * operating system. For example, if the device allocated a + * font to be used as the system font, this font would be + * freed in <code>release</code>. Also,to assist the garbage + * collector and minimize the amount of memory that is not + * reclaimed when the programmer keeps a reference to a + * disposed device, all fields except the handle are zero'd. + * The handle is needed by <code>destroy</code>. + * </p> + * This method is called before <code>destroy</code>. + * </p><p> + * If subclasses reimplement this method, they must + * call the <code>super</code> implementation. + * </p> + * + * @see #dispose + * @see #destroy + */ +protected void release () { + if (paragraphStyle != null) paragraphStyle.release(); + paragraphStyle = null; + + if (systemFont != null) systemFont.dispose(); + systemFont = null; + + if (COLOR_BLACK != null) COLOR_BLACK.dispose(); + if (COLOR_DARK_RED != null) COLOR_DARK_RED.dispose(); + if (COLOR_DARK_GREEN != null) COLOR_DARK_GREEN.dispose(); + if (COLOR_DARK_YELLOW != null) COLOR_DARK_YELLOW.dispose(); + if (COLOR_DARK_BLUE != null) COLOR_DARK_BLUE.dispose(); + if (COLOR_DARK_MAGENTA != null) COLOR_DARK_MAGENTA.dispose(); + if (COLOR_DARK_CYAN != null) COLOR_DARK_CYAN.dispose(); + if (COLOR_GRAY != null) COLOR_GRAY.dispose(); + if (COLOR_DARK_GRAY != null) COLOR_DARK_GRAY.dispose(); + if (COLOR_RED != null) COLOR_RED.dispose(); + if (COLOR_GREEN != null) COLOR_GREEN.dispose(); + if (COLOR_YELLOW != null) COLOR_YELLOW.dispose(); + if (COLOR_BLUE != null) COLOR_BLUE.dispose(); + if (COLOR_MAGENTA != null) COLOR_MAGENTA.dispose(); + if (COLOR_CYAN != null) COLOR_CYAN.dispose(); + if (COLOR_WHITE != null) COLOR_WHITE.dispose(); + COLOR_BLACK = COLOR_DARK_RED = COLOR_DARK_GREEN = COLOR_DARK_YELLOW = COLOR_DARK_BLUE = + COLOR_DARK_MAGENTA = COLOR_DARK_CYAN = COLOR_GRAY = COLOR_DARK_GRAY = COLOR_RED = + COLOR_GREEN = COLOR_YELLOW = COLOR_BLUE = COLOR_MAGENTA = COLOR_CYAN = COLOR_WHITE = null; +} + +/** + * If the underlying window system supports printing warning messages + * to the console, setting warnings to <code>false</code> prevents these + * messages from being printed. If the argument is <code>true</code> then + * message printing is not blocked. + * + * @param warnings <code>true</code>if warnings should be printed, and <code>false</code> otherwise + * + * @exception SWTException <ul> + * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void setWarnings (boolean warnings) { + checkDevice (); + this.warnings = warnings; +} + +} |