| /******************************************************************************* |
| * Copyright (c) 2000, 2008 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.internal.photon.*; |
| import org.eclipse.swt.widgets.TabItem; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.events.*; |
| |
| /** |
| * Instances of this class implement the notebook user interface |
| * metaphor. It allows the user to select a notebook page from |
| * set of pages. |
| * <p> |
| * The item children that may be added to instances of this class |
| * must be of type <code>TabItem</code>. |
| * <code>Control</code> children are created and then set into a |
| * tab item using <code>TabItem#setControl</code>. |
| * </p><p> |
| * Note that although this class is a subclass of <code>Composite</code>, |
| * it does not make sense to set a layout on it. |
| * </p><p> |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>TOP, BOTTOM</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>Selection</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles TOP and BOTTOM 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/#tabfolder">TabFolder, TabItem 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> |
| */ |
| public class TabFolder extends Composite { |
| int parentingHandle; |
| TabItem [] items; |
| int itemCount, currentIndex = OS.Pt_PG_INVALID; |
| |
| /** |
| * 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 |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public TabFolder (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| static int checkStyle (int style) { |
| style = checkBits (style, SWT.TOP, SWT.BOTTOM, 0, 0, 0, 0); |
| /* |
| * Even though it is legal to create this widget |
| * with scroll bars, they serve no useful purpose |
| * because they do not automatically scroll the |
| * widget's client area. The fix is to clear |
| * the SWT style. |
| */ |
| return style & ~(SWT.H_SCROLL | SWT.V_SCROLL); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the user changes the receiver's selection, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * When <code>widgetSelected</code> is called, the item field of the event object is valid. |
| * <code>widgetDefaultSelected</code> is not called. |
| * </p> |
| * |
| * @param listener the listener which should be notified when the user changes the receiver's selection |
| * |
| * @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); |
| } |
| |
| protected void checkSubclass () { |
| if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS); |
| } |
| |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget(); |
| PhDim_t dim = new PhDim_t(); |
| if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidget (handle); |
| OS.PtWidgetPreferredSize(handle, dim); |
| int width = dim.w, height = dim.h; |
| Point size; |
| if (layout != null) { |
| changed |= (state & LAYOUT_CHANGED) != 0; |
| size = layout.computeSize (this, wHint, hHint, changed); |
| state &= ~LAYOUT_CHANGED; |
| } else { |
| size = minimumSize (wHint, hHint, changed); |
| } |
| if (size.x == 0) size.x = DEFAULT_WIDTH; |
| if (size.y == 0) size.y = DEFAULT_HEIGHT; |
| if (wHint != SWT.DEFAULT) size.x = wHint; |
| if (hHint != SWT.DEFAULT) size.y = hHint; |
| width = Math.max (width, size.x); |
| height = Math.max (height, size.y); |
| Rectangle trim = computeTrim (0, 0, width, height); |
| width = trim.width; height = trim.height; |
| return new Point (width, height); |
| } |
| |
| public Rectangle computeTrim (int x, int y, int width, int height) { |
| checkWidget(); |
| PhDim_t dim = new PhDim_t(); |
| if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidget (handle); |
| OS.PtWidgetPreferredSize(handle, dim); |
| int [] args = { |
| OS.Pt_ARG_MARGIN_BOTTOM, 0, 0, // 1 |
| OS.Pt_ARG_MARGIN_TOP, 0, 0, // 4 |
| OS.Pt_ARG_MARGIN_RIGHT, 0, 0, // 7 |
| OS.Pt_ARG_MARGIN_LEFT, 0, 0, // 10 |
| // OS.Pt_ARG_BASIC_FLAGS, 0, 0, // 13 |
| }; |
| OS.PtGetResources(handle, args.length / 3, args); |
| int trimX = x - args [10]; |
| int trimY; |
| if ((style & SWT.BOTTOM) != 0) { |
| trimY = y - args [4]; |
| } else { |
| trimY = y - (dim.h - args [1]); |
| } |
| int trimWidth = width + args [7] + args [10]; |
| int trimHeight = height + dim.h; |
| return new Rectangle (trimX, trimY, trimWidth, trimHeight); |
| } |
| |
| void createHandle (int index) { |
| state |= HANDLE; |
| int parentHandle = parent.parentingHandle (); |
| int [] args = { |
| OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS, |
| }; |
| parentingHandle = OS.PtCreateWidget (OS.PtContainer (), parentHandle, args.length / 3, args); |
| if (parentingHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| int clazz = display.PtPanelGroup; |
| args = new int []{ |
| OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS, |
| OS.Pt_ARG_PG_FLAGS, (style & SWT.BOTTOM) != 0 ? OS.Pt_PG_SELECTOR_ON_BOTTOM : 0, OS.Pt_PG_SELECTOR_ON_BOTTOM, |
| }; |
| handle = OS.PtCreateWidget (clazz, parentingHandle, args.length / 3, args); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| } |
| |
| void createWidget (int index) { |
| super.createWidget (index); |
| items = new TabItem [4]; |
| } |
| |
| void createItem (TabItem item, int index) { |
| int count = itemCount; |
| if (!(0 <= index && index <= count)) error (SWT.ERROR_INVALID_RANGE); |
| if (count == items.length) { |
| TabItem [] newItems = new TabItem [items.length + 4]; |
| System.arraycopy (items, 0, newItems, 0, items.length); |
| items = newItems; |
| } |
| int [] args = {OS.Pt_ARG_PG_PANEL_TITLES, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| int oldPtr = args [1]; |
| int newPtr = OS.malloc ((count + 1) * 4); |
| if (newPtr == 0) error (SWT.ERROR_ITEM_NOT_ADDED); |
| int j = 0; |
| int [] str = new int [1]; |
| int [] address = new int [1]; |
| for (int i=0; i<=count; i++) { |
| if (i == index) { |
| str [0] = OS.malloc (1); |
| OS.memset(str [0], 0, 1); |
| } else { |
| OS.memmove (address, oldPtr + (j++ * 4), 4); |
| str [0] = OS.strdup (address [0]); |
| } |
| if (str [0] == 0) error (SWT.ERROR_ITEM_NOT_ADDED); |
| OS.memmove (newPtr + (i * 4), str, 4); |
| } |
| OS.PtSetResource (handle, OS.Pt_ARG_PG_PANEL_TITLES, newPtr, count + 1); |
| for (int i=0; i<=count; i++) { |
| OS.memmove (address, newPtr + (i * 4), 4); |
| OS.free (address [0]); |
| } |
| OS.free (newPtr); |
| System.arraycopy (items, index, items, index + 1, count - index); |
| items [index] = item; |
| itemCount++; |
| } |
| |
| void deregister () { |
| super.deregister (); |
| if (parentingHandle != 0) WidgetTable.remove (parentingHandle); |
| } |
| |
| void destroyItem (TabItem item) { |
| int count = itemCount; |
| int index = 0; |
| while (index < count) { |
| if (items [index] == item) break; |
| index++; |
| } |
| int [] args = {OS.Pt_ARG_PG_PANEL_TITLES, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| int oldPtr = args [1]; |
| int newPtr = OS.malloc ((count - 1) * 4); |
| if (newPtr == 0) error (SWT.ERROR_ITEM_NOT_ADDED); |
| int j = 0; |
| int [] str = new int [1]; |
| int [] address = new int [1]; |
| for (int i=0; i<count; i++) { |
| if (i == index) continue; |
| OS.memmove (address, oldPtr + (i * 4), 4); |
| str [0] = OS.strdup (address [0]); |
| if (str [0] == 0) error (SWT.ERROR_ITEM_NOT_ADDED); |
| OS.memmove (newPtr + (j++ * 4), str, 4); |
| } |
| OS.PtSetResource (handle, OS.Pt_ARG_PG_PANEL_TITLES, newPtr, count - 1); |
| for (int i=0; i<count-1; i++) { |
| OS.memmove (address, newPtr + (i * 4), 4); |
| OS.free (address [0]); |
| } |
| OS.free (newPtr); |
| if (index != count) { |
| System.arraycopy (items, index + 1, items, index, --count - index); |
| } |
| items [count] = null; |
| itemCount--; |
| } |
| |
| public Rectangle getClientArea () { |
| checkWidget(); |
| PhArea_t area = new PhArea_t (); |
| if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidgetFamily (handle); |
| int clientHandle = OS.PtWidgetChildBack (handle); |
| OS.PtWidgetArea (clientHandle, area); |
| |
| int args[] = { |
| OS.Pt_ARG_MARGIN_RIGHT, 0, 0, |
| OS.Pt_ARG_MARGIN_BOTTOM, 0, 0, |
| }; |
| OS.PtGetResources (handle, args.length / 3, args); |
| |
| PhArea_t parentArea = new PhArea_t(); |
| OS.PtWidgetArea(handle, parentArea); |
| int deltaX = area.pos_x - parentArea.pos_x; |
| int deltaY = area.pos_y - parentArea.pos_y; |
| area.size_w = (short) (parentArea.size_w - ( deltaX + args[1])); |
| area.size_h = (short) (parentArea.size_h - ( deltaY + args [4])); |
| |
| return new Rectangle (area.pos_x, area.pos_y, area.size_w, area.size_h); |
| } |
| |
| /** |
| * Returns the item at the given, zero-relative index in the |
| * receiver. Throws an exception if the index is out of range. |
| * |
| * @param index the index of the item to return |
| * @return the item at the given index |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</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> |
| */ |
| public TabItem getItem (int index) { |
| checkWidget(); |
| if (!(0 <= index && index < itemCount)) error (SWT.ERROR_INVALID_RANGE); |
| return items [index]; |
| } |
| |
| /** |
| * Returns the tab item at the given point in the receiver |
| * or null if no such item exists. The point is in the |
| * coordinate system of the receiver. |
| * |
| * @param point the point used to locate the item |
| * @return the tab item at the given point, or null if the point is not in a tab item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the point 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> |
| * |
| * @since 3.4 |
| */ |
| public TabItem getItem (Point point) { |
| checkWidget(); |
| if (point == null) error (SWT.ERROR_NULL_ARGUMENT); |
| for (int index = 0; index < itemCount; index++) { |
| TabItem item = items[index]; |
| Rectangle bounds = item.getBounds(); |
| if (bounds.contains(point)) return item; |
| } |
| return null; |
| } |
| |
| /** |
| * Returns an array of <code>TabItem</code>s which are the items |
| * in the receiver. |
| * <p> |
| * Note: This is not the actual structure used by the receiver |
| * to maintain its list of items, so modifying the array will |
| * not affect the receiver. |
| * </p> |
| * |
| * @return the items in the receiver |
| * |
| * @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> |
| */ |
| public TabItem [] getItems () { |
| checkWidget(); |
| TabItem [] result = new TabItem [itemCount]; |
| System.arraycopy (items, 0, result, 0, result.length); |
| return result; |
| } |
| |
| /** |
| * Returns the number of items contained in the receiver. |
| * |
| * @return the number of items |
| * |
| * @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> |
| */ |
| public int getItemCount () { |
| checkWidget(); |
| return itemCount; |
| } |
| |
| /** |
| * Returns an array of <code>TabItem</code>s that are currently |
| * selected in the receiver. An empty array indicates that no |
| * items are selected. |
| * <p> |
| * Note: This is not the actual structure used by the receiver |
| * to maintain its selection, so modifying the array will |
| * not affect the receiver. |
| * </p> |
| * @return an array representing the selection |
| * |
| * @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> |
| */ |
| public TabItem [] getSelection () { |
| checkWidget(); |
| int index = getSelectionIndex (); |
| if (index == -1) return new TabItem [0]; |
| return new TabItem [] {items [index]}; |
| } |
| |
| /** |
| * Returns the zero-relative index of the item which is currently |
| * selected in the receiver, or -1 if no item is selected. |
| * |
| * @return the index of the selected item |
| * |
| * @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> |
| */ |
| public int getSelectionIndex () { |
| checkWidget(); |
| int index; |
| if (currentIndex != OS.Pt_PG_INVALID && !OS.PtWidgetIsRealized (handle)) { |
| index = currentIndex; |
| } else { |
| int [] args = {OS.Pt_ARG_PG_CURRENT_INDEX, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| index = args [1]; |
| } |
| return index == OS.Pt_PG_INVALID ? -1 : index; |
| } |
| |
| void hookEvents () { |
| super.hookEvents (); |
| int windowProc = display.windowProc; |
| OS.PtAddCallback (handle, OS.Pt_CB_PG_PANEL_SWITCHING, windowProc, OS.Pt_CB_PG_PANEL_SWITCHING); |
| OS.PtAddCallback (handle, OS.Pt_CB_REALIZED, windowProc, OS.Pt_CB_REALIZED); |
| } |
| |
| /** |
| * Searches the receiver's list starting at the first item |
| * (index 0) until an item is found that is equal to the |
| * argument, and returns the index of that item. If no item |
| * is found, returns -1. |
| * |
| * @param item the search item |
| * @return the index of the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the item 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> |
| */ |
| public int indexOf (TabItem item) { |
| checkWidget(); |
| if (item == null) error (SWT.ERROR_NULL_ARGUMENT); |
| for (int i=0; i<itemCount; i++) { |
| if (items [i] == item) return i; |
| } |
| return -1; |
| } |
| |
| Point minimumSize (int wHint, int hHint, boolean flushCache) { |
| Control [] children = _getChildren (); |
| int width = 0, height = 0; |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| int index = 0; |
| while (index < itemCount) { |
| if (items [index].control == child) break; |
| index++; |
| } |
| if (index == itemCount) { |
| Rectangle rect = child.getBounds (); |
| width = Math.max (width, rect.x + rect.width); |
| height = Math.max (height, rect.y + rect.height); |
| } else { |
| Point size = child.computeSize (wHint, hHint, flushCache); |
| width = Math.max (width, size.x); |
| height = Math.max (height, size.y); |
| } |
| } |
| return new Point (width, height); |
| } |
| |
| void moveToBack (int child) { |
| OS.PtWidgetInsert (child, handle, 0); |
| } |
| |
| int parentingHandle () { |
| return parentingHandle; |
| } |
| |
| int Pt_CB_PG_PANEL_SWITCHING (int widget, int info) { |
| if (info == 0) return OS.Pt_CONTINUE; |
| PtCallbackInfo_t cbinfo = new PtCallbackInfo_t (); |
| OS.memmove (cbinfo, info, PtCallbackInfo_t.sizeof); |
| short[] oldIndex = new short[1]; |
| short[] newIndex = new short[1]; |
| OS.memmove(oldIndex, cbinfo.cbdata + 8, 2); |
| OS.memmove(newIndex, cbinfo.cbdata + 10, 2); |
| Control oldControl = null; |
| int index = oldIndex [0]; |
| TabItem oldItem = items [index]; |
| if (0 <= index && index < itemCount) oldControl = oldItem.control; |
| Control newControl = null; |
| index = newIndex [0]; |
| TabItem newItem = items [index]; |
| if (0 <= index && index < itemCount) newControl = newItem.control; |
| if (oldControl != null && !oldControl.isDisposed()) oldControl.setVisible (false); |
| if (newControl != null && !newControl.isDisposed()) { |
| newControl.setBounds (getClientArea ()); |
| newControl.setVisible (true); |
| } |
| Event event = new Event (); |
| event.item = newItem; |
| postEvent (SWT.Selection, event); |
| return OS.Pt_CONTINUE; |
| } |
| |
| int Pt_CB_REALIZED (int widget, int info) { |
| int result = super.Pt_CB_REALIZED (widget, info); |
| if (currentIndex != OS.Pt_PG_INVALID) { |
| if (info == 0) return OS.Pt_END; |
| PtCallbackInfo_t cbinfo = new PtCallbackInfo_t (); |
| OS.memmove (cbinfo, info, PtCallbackInfo_t.sizeof); |
| if (cbinfo.reason == OS.Pt_CB_REALIZED) { |
| setSelection (currentIndex, false); |
| currentIndex = OS.Pt_PG_INVALID; |
| } |
| } |
| return result; |
| } |
| |
| void register () { |
| super.register (); |
| if (parentingHandle != 0) WidgetTable.put (parentingHandle, this); |
| } |
| |
| void releaseHandle () { |
| super.releaseHandle (); |
| parentingHandle = 0; |
| } |
| |
| void releaseChildren (boolean destroy) { |
| if (items != null) { |
| for (int i=0; i<itemCount; i++) { |
| TabItem item = items [i]; |
| if (item != null && !item.isDisposed ()) { |
| item.release (false); |
| } |
| } |
| itemCount = 0; |
| items = null; |
| } |
| super.releaseChildren (destroy); |
| } |
| |
| void removeControl (Control control) { |
| super.removeControl (control); |
| for (int i=0; i<itemCount; i++) { |
| TabItem item = items [i]; |
| if (item.control == control) item.setControl (null); |
| } |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the user changes the receiver's selection. |
| * |
| * @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); |
| } |
| |
| int setBounds (int x, int y, int width, int height, boolean move, boolean resize, boolean events) { |
| int result = super.setBounds (x, y, width, height, move, resize, events); |
| if ((result & RESIZED) != 0) { |
| int [] args = {OS.Pt_ARG_WIDTH, 0, 0, OS.Pt_ARG_HEIGHT, 0, 0}; |
| OS.PtGetResources (parentingHandle, args.length / 3, args); |
| OS.PtSetResources (handle, args.length / 3, args); |
| int index = getSelectionIndex (); |
| if (index != -1) { |
| TabItem item = items [index]; |
| Control control = item.control; |
| if (control != null && !control.isDisposed ()) { |
| control.setBounds (getClientArea ()); |
| } |
| } |
| } |
| return result; |
| } |
| |
| /** |
| * Selects the item at the given zero-relative index in the receiver. |
| * If the item at the index was already selected, it remains selected. |
| * The current selection is first cleared, then the new items are |
| * selected. Indices that are out of range are ignored. |
| * |
| * @param index the index of the item to select |
| * |
| * @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> |
| */ |
| public void setSelection (int index) { |
| checkWidget(); |
| if (!(0 <= index && index < itemCount)) return; |
| setSelection (index, false); |
| } |
| |
| void setSelection (int index, boolean notify) { |
| int [] args = {OS.Pt_ARG_PG_CURRENT_INDEX, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| int oldIndex = args [1]; |
| if (oldIndex != OS.Pt_PG_INVALID) { |
| TabItem item = items [oldIndex]; |
| Control control = item.control; |
| if (control != null && !control.isDisposed ()) { |
| control.setVisible (false); |
| } |
| } |
| if (index == -1) index = OS.Pt_PG_INVALID; |
| OS.PtSetResource (handle, OS.Pt_ARG_PG_CURRENT_INDEX, index, 0); |
| args [1] = 0; |
| OS.PtGetResources (handle, args.length / 3, args); |
| int newIndex = args [1]; |
| /* |
| * Bug in Photon. Pt_ARG_PG_CURRENT_INDEX cannot be set if |
| * the widget is not realized. The fix is to remember the current |
| * index and reset it when the widget is realized. |
| */ |
| if (!OS.PtWidgetIsRealized (handle)) { |
| newIndex = currentIndex = index; |
| } |
| if (newIndex != OS.Pt_PG_INVALID) { |
| TabItem item = items [newIndex]; |
| Control control = item.control; |
| if (control != null && !control.isDisposed ()) { |
| control.setBounds (getClientArea ()); |
| control.setVisible (true); |
| } |
| if (notify) { |
| Event event = new Event (); |
| event.item = item; |
| postEvent (SWT.Selection, event); |
| } |
| } |
| } |
| |
| /** |
| * Sets the receiver's selection to the given item. |
| * The current selected is first cleared, then the new item is |
| * selected. |
| * |
| * @param item the item to select |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the item 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> |
| * |
| * @since 3.2 |
| */ |
| public void setSelection (TabItem item) { |
| checkWidget (); |
| if (item == null) error (SWT.ERROR_NULL_ARGUMENT); |
| setSelection (new TabItem [] {item}); |
| } |
| |
| /** |
| * Sets the receiver's selection to be the given array of items. |
| * The current selected is first cleared, then the new items are |
| * selected. |
| * |
| * @param items the array of items |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the items array 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> |
| */ |
| public void setSelection (TabItem [] items) { |
| checkWidget(); |
| if (items == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (items.length == 0) { |
| setSelection (-1, false); |
| } else { |
| for (int i=items.length-1; i>=0; --i) { |
| int index = indexOf (items [i]); |
| if (index != -1) setSelection (index, false); |
| } |
| } |
| } |
| |
| boolean traversePage (boolean next) { |
| int count = getItemCount (); |
| if (count == 0) return false; |
| int index = getSelectionIndex (); |
| if (index == -1) { |
| index = 0; |
| } else { |
| int offset = next ? 1 : -1; |
| index = (index + offset + count) % count; |
| } |
| setSelection (index, true); |
| return true; |
| } |
| |
| int topHandle () { |
| return parentingHandle; |
| } |
| |
| int widgetClass () { |
| return OS.PtPanelGroup (); |
| } |
| |
| } |