| /******************************************************************************* |
| * Copyright (c) 2000, 2012 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.widgets; |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.accessibility.*; |
| import org.eclipse.swt.events.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.internal.cocoa.*; |
| |
| /** |
| * Instances of the receiver represent a selectable user interface object |
| * that allows the user to drag a rubber banded outline of the sash within |
| * the parent control. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>HORIZONTAL, VERTICAL, SMOOTH</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>Selection</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles HORIZONTAL and VERTICAL may be specified. |
| * </p><p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| * |
| * @see <a href="http://www.eclipse.org/swt/snippets/#sash">Sash snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public class Sash extends Control { |
| Cursor sizeCursor; |
| boolean dragging; |
| int lastX, lastY, startX, startY; |
| private final static int INCREMENT = 1; |
| private final static int PAGE_INCREMENT = 9; |
| NSArray accessibilityAttributes = null; |
| |
| /** |
| * Constructs a new instance of this class given its parent |
| * and a style value describing its behavior and appearance. |
| * <p> |
| * The style value is either one of the style constants defined in |
| * class <code>SWT</code> which is applicable to instances of this |
| * class, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>SWT</code> style constants. The class description |
| * lists the style constants that are applicable to the class. |
| * Style bits are also inherited from superclasses. |
| * </p> |
| * |
| * @param parent a composite control which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| * |
| * @see SWT#HORIZONTAL |
| * @see SWT#VERTICAL |
| * @see SWT#SMOOTH |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public Sash (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| int cursorStyle = (style & SWT.VERTICAL) != 0 ? SWT.CURSOR_SIZEWE : SWT.CURSOR_SIZENS; |
| sizeCursor = new Cursor (display, cursorStyle); |
| } |
| |
| long /*int*/ accessibilityAttributeNames(long /*int*/ id, long /*int*/ sel) { |
| if (accessibilityAttributes == null) { |
| NSMutableArray ourAttributes = NSMutableArray.arrayWithCapacity(10); |
| ourAttributes.addObject(OS.NSAccessibilityRoleAttribute); |
| ourAttributes.addObject(OS.NSAccessibilityRoleDescriptionAttribute); |
| ourAttributes.addObject(OS.NSAccessibilityParentAttribute); |
| ourAttributes.addObject(OS.NSAccessibilityPositionAttribute); |
| ourAttributes.addObject(OS.NSAccessibilitySizeAttribute); |
| ourAttributes.addObject(OS.NSAccessibilityWindowAttribute); |
| ourAttributes.addObject(OS.NSAccessibilityTopLevelUIElementAttribute); |
| ourAttributes.addObject(OS.NSAccessibilityFocusedAttribute); |
| ourAttributes.addObject(OS.NSAccessibilityValueAttribute); |
| ourAttributes.addObject(OS.NSAccessibilityMaxValueAttribute); |
| ourAttributes.addObject(OS.NSAccessibilityMinValueAttribute); |
| // The accessibility documentation says that these next two are optional, but the |
| // Accessibility Verifier says they are required. |
| ourAttributes.addObject(OS.NSAccessibilityNextContentsAttribute); |
| ourAttributes.addObject(OS.NSAccessibilityPreviousContentsAttribute); |
| ourAttributes.addObject(OS.NSAccessibilityOrientationAttribute); |
| |
| if (accessible != null) { |
| // See if the accessible will override or augment the standard list. |
| // Help, title, and description can be overridden. |
| NSMutableArray extraAttributes = NSMutableArray.arrayWithCapacity(3); |
| extraAttributes.addObject(OS.NSAccessibilityHelpAttribute); |
| extraAttributes.addObject(OS.NSAccessibilityDescriptionAttribute); |
| extraAttributes.addObject(OS.NSAccessibilityTitleAttribute); |
| |
| for (int i = (int)/*64*/extraAttributes.count() - 1; i >= 0; i--) { |
| NSString attribute = new NSString(extraAttributes.objectAtIndex(i).id); |
| if (accessible.internal_accessibilityAttributeValue(attribute, ACC.CHILDID_SELF) != null) { |
| ourAttributes.addObject(extraAttributes.objectAtIndex(i)); |
| } |
| } |
| } |
| |
| accessibilityAttributes = ourAttributes; |
| accessibilityAttributes.retain(); |
| } |
| |
| return accessibilityAttributes.id; |
| } |
| |
| long /*int*/ accessibilityAttributeValue(long /*int*/ id, long /*int*/ sel, long /*int*/ arg0) { |
| long /*int*/ returnValue = 0; |
| NSString attributeName = new NSString(arg0); |
| |
| if (accessible != null) { |
| id returnObject = accessible.internal_accessibilityAttributeValue(attributeName, ACC.CHILDID_SELF); |
| |
| if (returnObject != null) returnValue = returnObject.id; |
| } |
| |
| if (returnValue != 0) return returnValue; |
| |
| if (attributeName.isEqualToString (OS.NSAccessibilityRoleAttribute) || attributeName.isEqualToString (OS.NSAccessibilityRoleDescriptionAttribute)) { |
| NSString roleText = OS.NSAccessibilitySplitterRole; |
| |
| if (attributeName.isEqualToString (OS.NSAccessibilityRoleAttribute)) { |
| return roleText.id; |
| } else { // NSAccessibilityRoleDescriptionAttribute |
| return OS.NSAccessibilityRoleDescription (roleText.id, 0); |
| } |
| } else if (attributeName.isEqualToString (OS.NSAccessibilityEnabledAttribute)) { |
| return NSNumber.numberWithBool(isEnabled()).id; |
| } else if (attributeName.isEqualToString (OS.NSAccessibilityOrientationAttribute)) { |
| NSString orientation = (style & SWT.VERTICAL) != 0 ? OS.NSAccessibilityVerticalOrientationValue : OS.NSAccessibilityHorizontalOrientationValue; |
| return orientation.id; |
| } else if (attributeName.isEqualToString (OS.NSAccessibilityValueAttribute)) { |
| Point location = getLocation(); |
| int value = (style & SWT.VERTICAL) != 0 ? location.x : location.y; |
| return NSNumber.numberWithInt(value).id; |
| } else if (attributeName.isEqualToString (OS.NSAccessibilityMaxValueAttribute)) { |
| NSRect parentFrame = parent.topView().frame(); |
| double /*float*/ maxValue = (style & SWT.VERTICAL) != 0 ? |
| parentFrame.width : |
| parentFrame.height; |
| return NSNumber.numberWithDouble(maxValue).id; |
| } else if (attributeName.isEqualToString (OS.NSAccessibilityMinValueAttribute)) { |
| return NSNumber.numberWithInt(0).id; |
| } else if (attributeName.isEqualToString (OS.NSAccessibilityNextContentsAttribute)) { |
| Control[] children = parent._getChildren(); |
| Control nextView = null; |
| for (int i = 0; i < children.length; i++) { |
| if (children[i] == this) { |
| if (i < children.length - 1) { |
| nextView = children[i + 1]; |
| break; |
| } |
| } |
| } |
| |
| if (nextView != null) |
| return NSArray.arrayWithObject(nextView.view).id; |
| else |
| return NSArray.array().id; |
| } else if (attributeName.isEqualToString (OS.NSAccessibilityPreviousContentsAttribute)) { |
| Control[] children = parent._getChildren(); |
| Control nextView = null; |
| for (int i = 0; i < children.length; i++) { |
| if (children[i] == this) { |
| if (i > 0) { |
| nextView = children[i - 1]; |
| break; |
| } |
| } |
| } |
| |
| if (nextView != null) |
| return NSArray.arrayWithObject(nextView.view).id; |
| else |
| return NSArray.array().id; |
| } |
| |
| return super.accessibilityAttributeValue(id, sel, arg0); |
| } |
| |
| boolean accessibilityIsIgnored(long /*int*/ id, long /*int*/ sel) { |
| return false; |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the control is selected by the user, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * When <code>widgetSelected</code> is called, the x, y, width, and height fields of the event object are valid. |
| * If the receiver is being dragged, the event object detail field contains the value <code>SWT.DRAG</code>. |
| * <code>widgetDefaultSelected</code> is not called. |
| * </p> |
| * |
| * @param listener the listener which should be notified when the control is selected by the user |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see SelectionListener |
| * @see #removeSelectionListener |
| * @see SelectionEvent |
| */ |
| public void addSelectionListener(SelectionListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener(listener); |
| addListener(SWT.Selection,typedListener); |
| addListener(SWT.DefaultSelection,typedListener); |
| } |
| |
| static int checkStyle (int style) { |
| /* |
| * Macintosh only supports smooth dragging. |
| */ |
| style |= SWT.SMOOTH; |
| return checkBits (style, SWT.HORIZONTAL, SWT.VERTICAL, 0, 0, 0, 0); |
| } |
| |
| boolean becomeFirstResponder (long /*int*/ id, long /*int*/ sel) { |
| boolean result = super.becomeFirstResponder(id, sel); |
| NSRect frame = view.frame(); |
| lastX = (int)frame.x; |
| lastY = (int)frame.y; |
| return result; |
| } |
| |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget(); |
| int width = 0, height = 0; |
| if ((style & SWT.HORIZONTAL) != 0) { |
| width += DEFAULT_WIDTH; height += 5; |
| } else { |
| width += 5; height += DEFAULT_HEIGHT; |
| } |
| if (wHint != SWT.DEFAULT) width = wHint; |
| if (hHint != SWT.DEFAULT) height = hHint; |
| return new Point (width, height); |
| } |
| |
| void createHandle () { |
| state |= THEME_BACKGROUND; |
| NSView widget = (NSView)new SWTView().alloc(); |
| widget.init (); |
| view = widget; |
| } |
| |
| void drawBackground (long /*int*/ id, NSGraphicsContext context, NSRect rect) { |
| if (id != view.id) return; |
| fillBackground (view, context, rect, -1); |
| } |
| |
| Cursor findCursor () { |
| Cursor cursor = super.findCursor (); |
| if (cursor == null) { |
| int cursorType = (style & SWT.HORIZONTAL) != 0 ? SWT.CURSOR_SIZENS : SWT.CURSOR_SIZEWE; |
| cursor = display.getSystemCursor (cursorType); |
| } |
| return cursor; |
| } |
| |
| boolean sendKeyEvent(NSEvent nsEvent, int type) { |
| super.sendKeyEvent (nsEvent, type); |
| if (type == SWT.KeyDown) { |
| int keyCode = nsEvent.keyCode(); |
| switch (keyCode) { |
| case 126: /* Up arrow */ |
| case 123: /* Left arrow */ |
| case 125: /* Down arrow */ |
| case 124: /* Right arrow */ { |
| int xChange = 0, yChange = 0; |
| int stepSize = PAGE_INCREMENT; |
| long /*int*/ modifiers = nsEvent.modifierFlags(); |
| if ((modifiers & OS.NSControlKeyMask) != 0) stepSize = INCREMENT; |
| if ((style & SWT.VERTICAL) != 0) { |
| if (keyCode == 126 || keyCode == 125) break; |
| xChange = keyCode == 123 ? -stepSize : stepSize; |
| } else { |
| if (keyCode == 123 || keyCode == 124) break; |
| yChange = keyCode == 126 ? -stepSize : stepSize; |
| } |
| |
| Rectangle bounds = getBounds (); |
| int width = bounds.width, height = bounds.height; |
| Rectangle parentBounds = parent.getBounds (); |
| int parentWidth = parentBounds.width; |
| int parentHeight = parentBounds.height; |
| int newX = lastX, newY = lastY; |
| if ((style & SWT.VERTICAL) != 0) { |
| newX = Math.min (Math.max (0, lastX + xChange), parentWidth - width); |
| } else { |
| newY = Math.min (Math.max (0, lastY + yChange), parentHeight - height); |
| } |
| if (newX == lastX && newY == lastY) return true; |
| Event event = new Event (); |
| event.x = newX; |
| event.y = newY; |
| event.width = width; |
| event.height = height; |
| sendSelectionEvent (SWT.Selection, event, true); |
| if (isDisposed ()) break; |
| if (event.doit) { |
| setBounds (event.x, event.y, width, height); |
| if (isDisposed ()) break; |
| lastX = event.x; |
| lastY = event.y; |
| if (isDisposed ()) return false; |
| int cursorX = event.x, cursorY = event.y; |
| if ((style & SWT.VERTICAL) != 0) { |
| cursorY += height / 2; |
| } else { |
| cursorX += width / 2; |
| } |
| display.setCursorLocation (parent.toDisplay (cursorX, cursorY)); |
| } |
| break; |
| } |
| } |
| } |
| return true; |
| } |
| |
| void mouseDown(long /*int*/ id, long /*int*/ sel, long /*int*/ theEvent) { |
| //TODO use sendMouseEvent |
| super.mouseDown(id, sel, theEvent); |
| if (isDisposed()) return; |
| NSEvent nsEvent = new NSEvent(theEvent); |
| if (nsEvent.clickCount() != 1) return; |
| NSPoint location = nsEvent.locationInWindow(); |
| NSPoint point = view.convertPoint_fromView_(location, null); |
| startX = (int)point.x; |
| startY = (int)point.y; |
| NSRect frame = view.frame(); |
| Event event = new Event (); |
| event.x = (int)frame.x; |
| event.y = (int)frame.y; |
| event.width = (int)frame.width; |
| event.height = (int)frame.height; |
| sendSelectionEvent (SWT.Selection, event, true); |
| if (isDisposed ()) return; |
| if (event.doit) { |
| lastX = event.x; |
| lastY = event.y; |
| dragging = true; |
| setLocation(event.x, event.y); |
| } |
| } |
| |
| boolean mouseEvent (long /*int*/ id, long /*int*/ sel, long /*int*/ theEvent, int type) { |
| super.mouseEvent (id, sel, theEvent, type); |
| return new NSEvent (theEvent).type () != OS.NSLeftMouseDown; |
| } |
| |
| void mouseDragged(long /*int*/ id, long /*int*/ sel, long /*int*/ theEvent) { |
| //TODO use sendMouseEvent |
| super.mouseDragged(id, sel, theEvent); |
| if (isDisposed()) return; |
| if (!dragging) return; |
| NSEvent nsEvent = new NSEvent(theEvent); |
| NSPoint location = nsEvent.locationInWindow(); |
| NSPoint point = view.convertPoint_fromView_(location, null); |
| NSRect frame = view.frame(); |
| NSRect parentFrame = parent.topView().frame(); |
| int newX = lastX, newY = lastY; |
| if ((style & SWT.VERTICAL) != 0) { |
| newX = Math.min (Math.max (0, (int)(point.x + frame.x - startX)), (int)(parentFrame.width - frame.width)); |
| } else { |
| newY = Math.min (Math.max (0, (int)(point.y + frame.y - startY)), (int)(parentFrame.height - frame.height)); |
| } |
| if (newX == lastX && newY == lastY) return; |
| Event event = new Event (); |
| event.x = newX; |
| event.y = newY; |
| event.width = (int)frame.width; |
| event.height = (int)frame.height; |
| sendSelectionEvent (SWT.Selection, event, true); |
| if (isDisposed ()) return; |
| if (event.doit) { |
| lastX = event.x; |
| lastY = event.y; |
| setBounds (event.x, event.y, (int)frame.width, (int)frame.height); |
| } |
| } |
| |
| void mouseUp(long /*int*/ id, long /*int*/ sel, long /*int*/ theEvent) { |
| //TODO use sendMouseEvent |
| super.mouseUp(id, sel, theEvent); |
| if (isDisposed()) return; |
| if (!dragging) return; |
| dragging = false; |
| NSRect frame = view.frame(); |
| Event event = new Event (); |
| event.x = lastX; |
| event.y = lastY; |
| event.width = (int)frame.width; |
| event.height = (int)frame.height; |
| sendSelectionEvent (SWT.Selection, event, true); |
| if (isDisposed ()) return; |
| if (event.doit) { |
| setBounds (event.x, event.y, (int)frame.width, (int)frame.height); |
| } |
| } |
| |
| void releaseHandle () { |
| super.releaseHandle (); |
| if (accessibilityAttributes != null) accessibilityAttributes.release(); |
| accessibilityAttributes = null; |
| } |
| |
| void releaseWidget () { |
| super.releaseWidget (); |
| if (sizeCursor != null) sizeCursor.dispose (); |
| sizeCursor = null; |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the control is selected by the user. |
| * |
| * @param listener the listener which should no longer be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see SelectionListener |
| * @see #addSelectionListener |
| */ |
| public void removeSelectionListener(SelectionListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook(SWT.Selection, listener); |
| eventTable.unhook(SWT.DefaultSelection,listener); |
| } |
| |
| void superKeyDown (long /*int*/ id, long /*int*/ sel, long /*int*/ theEvent) { |
| } |
| |
| void superKeyUp (long /*int*/ id, long /*int*/ sel, long /*int*/ theEvent) { |
| } |
| |
| int traversalCode (int key, NSEvent theEvent) { |
| return 0; |
| } |
| |
| } |