| package org.eclipse.swt.widgets;
|
|
|
| /*
|
| * (c) Copyright IBM Corp. 2000, 2001.
|
| * All Rights Reserved
|
| */
|
|
|
| import org.eclipse.swt.internal.*;
|
| import org.eclipse.swt.internal.photon.*;
|
| import org.eclipse.swt.*;
|
| import org.eclipse.swt.graphics.*;
|
| import org.eclipse.swt.events.*;
|
|
|
| /** |
| * Instances of this class represent a selectable user interface |
| * object that displays a list of strings and issues notificiation |
| * when a string selected. A list may be single or multi select. |
| * <p> |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>SINGLE, MULTI</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>Selection, DefaultSelection</dd> |
| * </dl> |
| * <p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| */ |
| public class List extends Scrollable {
|
|
|
| /** |
| * 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 |
| * for all SWT widget classes should include a comment which |
| * describes the style constants which are applicable to the class. |
| * </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 List (Composite parent, int style) {
|
| super (parent, checkStyle (style));
|
| }
|
|
|
| static int checkStyle (int style) {
|
| return checkBits (style, SWT.SINGLE, SWT.MULTI, 0, 0, 0, 0);
|
| }
|
|
|
| /** |
| * Adds the argument to the end of the receiver's list. |
| * |
| * @param string the new item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string 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> |
| * @exception SWTError <ul> |
| * <li>ERROR_ITEM_NOT_ADDED - if the operation fails because of an operating system failure</li> |
| * </ul> |
| * |
| * @see #add(String,int) |
| */ |
| public void add (String string) {
|
| checkWidget();
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| int ptr = OS.malloc (buffer.length);
|
| OS.memmove (ptr, buffer, buffer.length);
|
| OS.PtListAddItems (handle, new int [] {ptr}, 1, 0);
|
| OS.free (ptr);
|
| }
|
|
|
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the receiver's selection changes, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * <code>widgetSelected</code> is called when the selection changes. |
| * <code>widgetDefaultSelected</code> is typically called when an item is double-clicked. |
| * </p> |
| * |
| * @param listener the listener which should 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 #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);
|
| }
|
|
|
| /** |
| * Adds the argument to the receiver's list at the given |
| * zero-relative index. |
| * <p> |
| * Note: To add an item at the end of the list, use the |
| * result of calling <code>getItemCount()</code> as the |
| * index or use <code>add(String)</code>. |
| * </p> |
| * |
| * @param string the new item |
| * @param index the index for the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list (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> |
| * @exception SWTError <ul> |
| * <li>ERROR_ITEM_NOT_ADDED - if the operation fails because of an operating system failure</li> |
| * </ul> |
| * |
| * @see #add(String) |
| */ |
| public void add (String string, int index) {
|
| checkWidget();
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (index == -1) error (SWT.ERROR_INVALID_RANGE);
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| int ptr = OS.malloc (buffer.length);
|
| OS.memmove (ptr, buffer, buffer.length);
|
| int result = OS.PtListAddItems (handle, new int [] {ptr}, 1, index + 1);
|
| OS.free (ptr);
|
| if (result != 0) {
|
| int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| if (0 <= index && index <= args [1]) error (SWT.ERROR_ITEM_NOT_ADDED);
|
| error (SWT.ERROR_INVALID_RANGE);
|
| }
|
| }
|
|
|
| public Point computeSize (int wHint, int hHint, boolean changed) {
|
| checkWidget();
|
|
|
| /**
|
| * Feature in Photon - The preferred width calculated by
|
| * PtWidgetPreferredSize is the current width.
|
| */
|
| PhDim_t dim = new PhDim_t();
|
| if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidget (handle);
|
| OS.PtWidgetPreferredSize(handle, dim);
|
| int width = 0, height = dim.h;
|
| int [] args = new int [] {
|
| OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0,
|
| OS.Pt_ARG_ITEMS, 0, 0,
|
| OS.Pt_ARG_LIST_FONT, 0, 0,
|
| };
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| PhRect_t rect = new PhRect_t();
|
| int [] items = new int [1];
|
| for (int i = 0; i < args [1]; i++) {
|
| OS.memmove (items, args [4] + (i * 4), 4);
|
| int length = OS.strlen (items [0]);
|
| OS.PfExtentText(rect, null, args [7], items [0], length);
|
| width = Math.max(width, rect.lr_x - rect.ul_x + 1);
|
| }
|
| rect = new PhRect_t ();
|
| PhArea_t area = new PhArea_t ();
|
| rect.lr_x = (short) (width + 1);
|
| OS.PtSetAreaFromWidgetCanvas (handle, rect, area);
|
| width = area.size_w;
|
| if (wHint != SWT.DEFAULT || hHint != SWT.DEFAULT) {
|
| rect = new PhRect_t ();
|
| area = new PhArea_t ();
|
| rect.lr_x = (short) (wHint - 1);
|
| rect.lr_y = (short) (hHint - 1);
|
| OS.PtSetAreaFromWidgetCanvas (handle, rect, area);
|
| ScrollBar scroll;
|
| if (wHint != SWT.DEFAULT) {
|
| width = area.size_w;
|
| if ((scroll = getVerticalBar()) != null)
|
| width += scroll.getSize().x;
|
| }
|
| if (hHint != SWT.DEFAULT) {
|
| height = area.size_h;
|
| if ((scroll = getHorizontalBar()) != null)
|
| height += scroll.getSize().y;
|
| }
|
| }
|
| return new Point(width, height);
|
| }
|
|
|
| void createHandle (int index) {
|
| state |= HANDLE;
|
| Display display = getDisplay ();
|
| int clazz = display.PtList;
|
| int parentHandle = parent.handle;
|
| int mode = OS.Pt_SELECTION_MODE_SINGLE | OS.Pt_SELECTION_MODE_AUTO;
|
| if ((style & SWT.MULTI) != 0) {
|
| if ((style & SWT.SIMPLE) != 0) {
|
| mode = OS.Pt_SELECTION_MODE_MULTIPLE | OS.Pt_SELECTION_MODE_NOCLEAR
|
| | OS.Pt_SELECTION_MODE_TOGGLE | OS.Pt_SELECTION_MODE_NOMOVE;
|
| } else {
|
| mode = OS.Pt_SELECTION_MODE_MULTIPLE | OS.Pt_SELECTION_MODE_AUTO;
|
| }
|
| }
|
| mode |= OS.Pt_SELECTION_MODE_NOFOCUS;
|
| boolean hasBorder = (style & SWT.BORDER) != 0;
|
| int [] args = {
|
| OS.Pt_ARG_FLAGS, hasBorder ? OS.Pt_HIGHLIGHTED : 0, OS.Pt_HIGHLIGHTED,
|
| OS.Pt_ARG_SELECTION_MODE, mode, 0,
|
| OS.Pt_ARG_FLAGS, OS.Pt_SELECTABLE | OS.Pt_SELECT_NOREDRAW, OS.Pt_SELECTABLE | OS.Pt_SELECT_NOREDRAW,
|
| OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS,
|
| };
|
| handle = OS.PtCreateWidget (clazz, parentHandle, args.length / 3, args);
|
| if (handle == 0) error (SWT.ERROR_NO_HANDLES);
|
| createStandardScrollBars ();
|
| }
|
|
|
| byte [] defaultFont () {
|
| Display display = getDisplay ();
|
| return display.LIST_FONT;
|
| }
|
|
|
| /** |
| * Deselects the item at the given zero-relative index in the receiver. |
| * If the item at the index was already deselected, it remains |
| * deselected. Indices that are out of range are ignored. |
| * |
| * @param index the index of the item to deselect |
| * |
| * @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 deselect (int index) {
|
| checkWidget();
|
| if (index < 0) return;
|
| OS.PtListUnselectPos (handle, index + 1);
|
| }
|
|
|
| /** |
| * Deselects the items at the given zero-relative indices in the receiver. |
| * If the item at the given zero-relative index in the receiver |
| * is selected, it is deselected. If the item at the index |
| * was not selected, it remains deselected. The range of the |
| * indices is inclusive. Indices that are out of range are ignored. |
| * |
| * @param start the start index of the items to deselect |
| * @param end the end index of the items to deselect |
| * |
| * @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 deselect (int start, int end) {
|
| checkWidget();
|
| if (start > end) return;
|
| if ((style & SWT.SINGLE) != 0) {
|
| int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| int count = args [1];
|
| int index = Math.min (count - 1, end);
|
| if (index >= start) deselect (index);
|
| return;
|
| }
|
| for (int i=start; i<=end; i++) {
|
| OS.PtListUnselectPos (handle, i + 1);
|
| }
|
| }
|
|
|
| /** |
| * Deselects the items at the given zero-relative indices in the receiver. |
| * If the item at the given zero-relative index in the receiver |
| * is selected, it is deselected. If the item at the index |
| * was not selected, it remains deselected. Indices that are out |
| * of range and duplicate indices are ignored. |
| * |
| * @param indices the array of indices for the items to deselect |
| * |
| * @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> |
| */ |
| public void deselect (int [] indices) {
|
| checkWidget();
|
| if (indices == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (indices.length == 0) return;
|
| for (int i=0; i<indices.length; i++) {
|
| int index = indices [i];
|
| if (index != -1) {
|
| OS.PtListUnselectPos (handle, index + 1);
|
| }
|
| }
|
| }
|
|
|
| /** |
| * Deselects all selected 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 void deselectAll () {
|
| checkWidget();
|
| int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| int count = args [1];
|
| for (int i=0; i<count; i++) {
|
| OS.PtListUnselectPos (handle, i + 1);
|
| }
|
| }
|
|
|
| /** |
| * Returns the zero-relative index of the item which is currently |
| * has the focus in the receiver, or -1 if no item is has focus. |
| * |
| * @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 getFocusIndex () {
|
| return getSelectionIndex ();
|
| }
|
|
|
| /** |
| * 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> |
| * @exception SWTError <ul> |
| * <li>ERROR_CANNOT_GET_ITEM - if the operation fails because of an operating system failure</li> |
| * </ul> |
| */ |
| public String getItem (int index) {
|
| checkWidget();
|
| int [] args = new int [] {
|
| OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0,
|
| OS.Pt_ARG_ITEMS, 0, 0,
|
| };
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| if (!(0 <= index && index < args [1])) {
|
| error (SWT.ERROR_INVALID_RANGE);
|
| }
|
| int [] items = new int [1];
|
| OS.memmove (items, args [4] + (index * 4), 4);
|
| int length = OS.strlen (items [0]);
|
| byte [] buffer = new byte [length];
|
| OS.memmove (buffer, items [0], length);
|
| char [] unicode = Converter.mbcsToWcs (null, buffer);
|
| return new String (unicode);
|
| }
|
|
|
| /** |
| * 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> |
| * @exception SWTError <ul> |
| * <li>ERROR_CANNOT_GET_COUNT - if the operation fails because of an operating system failure</li> |
| * </ul> |
| */ |
| public int getItemCount () {
|
| checkWidget();
|
| int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| return args [1];
|
| }
|
|
|
| /** |
| * Returns the height of the area which would be used to |
| * display <em>one</em> of the items in the tree. |
| * |
| * @return the height of one 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> |
| * @exception SWTError <ul> |
| * <li>ERROR_CANNOT_GET_ITEM_HEIGHT - if the operation fails because of an operating system failure</li> |
| * </ul> |
| */ |
| public int getItemHeight () {
|
| checkWidget();
|
| int [] args = new int [] {
|
| OS.Pt_ARG_LIST_TOTAL_HEIGHT, 0, 0,
|
| OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0,
|
| OS.Pt_ARG_LIST_FONT, 0, 0,
|
| };
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| if (args [4] == 0) {
|
| int ptr = OS.malloc(1);
|
| PhRect_t rect = new PhRect_t ();
|
| OS.PfExtentText(rect, null, args [7], ptr, 1);
|
| OS.free(ptr);
|
| int inset = 4;
|
| return inset + (rect.lr_y - rect.ul_y + 1);
|
| }
|
| return args [1] / args [4];
|
| }
|
|
|
| /** |
| * Returns an array of <code>String</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's list |
| * |
| * @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> |
| * @exception SWTError <ul> |
| * <li>ERROR_CANNOT_GET_ITEM - if the operation fails because of an operating system failure while getting an item</li> |
| * <li>ERROR_CANNOT_GET_COUNT - if the operation fails because of an operating system failure while getting the item count</li> |
| * </ul> |
| */ |
| public String [] getItems () {
|
| checkWidget();
|
| int [] args = new int [] {
|
| OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0,
|
| OS.Pt_ARG_ITEMS, 0, 0,
|
| };
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| int [] items = new int [args [1]];
|
| OS.memmove (items, args [4], args [1] * 4);
|
| String [] result = new String [args [1]];
|
| for (int i=0; i<args [1]; i++) {
|
| int length = OS.strlen (items [i]);
|
| byte [] buffer = new byte [length];
|
| OS.memmove (buffer, items [i], length);
|
| char [] unicode = Converter.mbcsToWcs (null, buffer);
|
| result [i] = new String (unicode);
|
| }
|
| return result;
|
|
|
| }
|
|
|
| /** |
| * Returns an array of <code>String</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> |
| * @exception SWTError <ul> |
| * <li>ERROR_CANNOT_GET_SELECTION - if the operation fails because of an operating system failure while getting the selection</li> |
| * <li>ERROR_CANNOT_GET_ITEM - if the operation fails because of an operating system failure while getting an item</li> |
| * </ul> |
| */ |
| public String [] getSelection () {
|
| checkWidget();
|
| int [] indices = getSelectionIndices ();
|
| String [] result = new String [indices.length];
|
| for (int i=0; i<indices.length; i++) {
|
| result [i] = getItem (indices [i]);
|
| }
|
| return result;
|
| }
|
|
|
| /** |
| * Returns the number of selected items contained in the receiver. |
| * |
| * @return the number of selected 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> |
| * @exception SWTError <ul> |
| * <li>ERROR_CANNOT_GET_COUNT - if the operation fails because of an operating system failure</li> |
| * </ul> |
| */ |
| public int getSelectionCount () {
|
| checkWidget();
|
| int [] args = new int [] {OS.Pt_ARG_LIST_SEL_COUNT, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| return args [1];
|
| }
|
|
|
| /** |
| * 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> |
| * @exception SWTError <ul> |
| * <li>ERROR_CANNOT_GET_SELECTION - if the operation fails because of an operating system failure</li> |
| * </ul> |
| */ |
| public int getSelectionIndex () {
|
| checkWidget();
|
| int [] args = new int [] {
|
| OS.Pt_ARG_LIST_SEL_COUNT, 0, 0,
|
| OS.Pt_ARG_SELECTION_INDEXES, 0, 0,
|
| };
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| if (args [1] == 0) return -1;
|
| short [] buffer = new short [1];
|
| OS.memmove (buffer, args [4], 2);
|
| return buffer [0] - 1;
|
| }
|
|
|
| /** |
| * Returns the zero-relative indices of the items which are currently |
| * selected in the receiver. The array is empty if 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 the array of indices of the selected 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> |
| * @exception SWTError <ul> |
| * <li>ERROR_CANNOT_GET_SELECTION - if the operation fails because of an operating system failure</li> |
| * </ul> |
| */ |
| public int [] getSelectionIndices () {
|
| checkWidget();
|
| int [] args = new int [] {
|
| OS.Pt_ARG_LIST_SEL_COUNT, 0, 0,
|
| OS.Pt_ARG_SELECTION_INDEXES, 0, 0,
|
| };
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| short [] indices = new short [args [1]];
|
| OS.memmove (indices, args [4], args [1] * 2);
|
| int [] result = new int [args [1]];
|
| for (int i=0; i<args [1]; i++) {
|
| result [i] = indices [i] - 1;
|
| }
|
| return result;
|
| }
|
|
|
| /** |
| * Returns the zero-relative index of the item which is currently |
| * at the top of the receiver. This index can change when items are |
| * scrolled or new items are added or removed. |
| * |
| * @return the index of the top 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 getTopIndex () {
|
| checkWidget();
|
| int [] args = new int [] {OS.Pt_ARG_TOP_ITEM_POS, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| return args [1] - 1;
|
| }
|
|
|
| void hookEvents () {
|
| super.hookEvents ();
|
| int windowProc = getDisplay ().windowProc;
|
| OS.PtAddCallback (handle, OS.Pt_CB_SELECTION, windowProc, SWT.Selection);
|
| OS.PtAddCallback (handle, OS.Pt_CB_ACTIVATE, windowProc, SWT.DefaultSelection);
|
| }
|
|
|
| /** |
| * Gets the index of an item. |
| * <p> |
| * The list is searched starting at 0 until an |
| * item is found that is equal to the search item. |
| * If no item is found, -1 is returned. Indexing |
| * is zero based. |
| * |
| * @param string the search item |
| * @return the index of the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string 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 (String string) {
|
| checkWidget();
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| return OS.PtListItemPos(handle, buffer) - 1;
|
| }
|
|
|
| /** |
| * Searches the receiver's list starting at the given, |
| * zero-relative index until an item is found that is equal |
| * to the argument, and returns the index of that item. If |
| * no item is found or the starting index is out of range, |
| * returns -1. |
| * |
| * @param string the search item |
| * @return the index of the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string 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> |
| * @exception SWTError <ul> |
| * <li>ERROR_CANNOT_GET_COUNT - if the operation fails because of an operating system failure while getting the item count</li> |
| * <li>ERROR_CANNOT_GET_ITEM - if the operation fails because of an operating system failure while getting an item</li> |
| * </ul> |
| */ |
| public int indexOf (String string, int start) {
|
| checkWidget();
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
|
|
| // NOT DONE - start is ignored
|
| return indexOf (string);
|
| }
|
|
|
| /** |
| * Returns <code>true</code> if the item is selected, |
| * and <code>false</code> otherwise. Indices out of |
| * range are ignored. |
| * |
| * @param index the index of the item |
| * @return the visibility state of the item at the index |
| * |
| * @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 boolean isSelected (int index) {
|
| checkWidget();
|
| int [] args = new int [] {
|
| OS.Pt_ARG_LIST_SEL_COUNT, 0, 0,
|
| OS.Pt_ARG_SELECTION_INDEXES, 0, 0,
|
| };
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| short [] buffer = new short [1];
|
| for (int i=0; i<args [1]; i++) {
|
| OS.memmove (buffer, args [4] + (i * 2), 2);
|
| if (buffer [0] == index + 1) return true;
|
| }
|
| return false;
|
| }
|
|
|
| int processDefaultSelection (int info) {
|
| if (info == 0) return OS.Pt_END;
|
| PtCallbackInfo_t cbinfo = new PtCallbackInfo_t ();
|
| OS.memmove (cbinfo, info, PtCallbackInfo_t.sizeof);
|
| if (cbinfo.cbdata == 0) return OS.Pt_END;
|
| int[] click_count = new int [1];
|
| OS.memmove(click_count, cbinfo.cbdata, 4);
|
| if (click_count [0] > 1) postEvent (SWT.DefaultSelection);
|
| return OS.Pt_CONTINUE;
|
| }
|
|
|
| int processPaint (int damage) {
|
| OS.PtSuperClassDraw (OS.PtList (), handle, damage);
|
| return super.processPaint (damage);
|
| }
|
|
|
| int processSelection (int info) {
|
| postEvent (SWT.Selection);
|
| return OS.Pt_CONTINUE;
|
| }
|
|
|
| /** |
| * Removes the item from the receiver at the given |
| * zero-relative index. |
| * |
| * @param index the index for the item |
| * |
| * @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> |
| * @exception SWTError <ul> |
| * <li>ERROR_ITEM_NOT_REMOVED - if the operation fails because of an operating system failure</li> |
| * </ul> |
| */ |
| public void remove (int index) {
|
| checkWidget();
|
| int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| if (!(0 <= index && index < args [1])) error (SWT.ERROR_INVALID_RANGE);
|
| int result = OS.PtListDeleteItemPos (handle, 1, index + 1);
|
| if (result != 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
|
| }
|
|
|
| /** |
| * Searches the receiver's list starting at the first item |
| * until an item is found that is equal to the argument, |
| * and removes that item from the list. |
| * |
| * @param string the item to remove |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the string is not found in the list</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> |
| * @exception SWTError <ul> |
| * <li>ERROR_ITEM_NOT_REMOVED - if the operation fails because of an operating system failure</li> |
| * </ul> |
| */ |
| public void remove (String string) {
|
| checkWidget();
|
| int index = indexOf (string, 0);
|
| if (index == -1) error (SWT.ERROR_ITEM_NOT_REMOVED);
|
| remove (index);
|
| }
|
|
|
| /** |
| * Removes the items from the receiver at the given |
| * zero-relative indices. |
| * |
| * @param indices the array of indices of the items |
| * |
| * @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> |
| * @exception SWTError <ul> |
| * <li>ERROR_ITEM_NOT_REMOVED - if the operation fails because of an operating system failure</li> |
| * </ul> |
| */ |
| public void remove (int [] indices) {
|
| checkWidget();
|
| if (indices == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| int [] newIndices = new int [indices.length];
|
| System.arraycopy (indices, 0, newIndices, 0, indices.length);
|
| sort (newIndices);
|
| int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| int count = args [1];
|
| for (int i=0; i<newIndices.length; i++ ) {
|
| int index = newIndices [i];
|
| if (!(0 <= index && index < count)) error (SWT.ERROR_INVALID_RANGE);
|
| int result = OS.PtListDeleteItemPos (handle, 1, index + 1);
|
| if (result != 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
|
| }
|
| }
|
|
|
| /** |
| * Removes the items from the receiver which are |
| * between the given zero-relative start and end |
| * indices (inclusive). |
| * |
| * @param start the start of the range |
| * @param end the end of the range |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_RANGE - if either the start or end are 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> |
| * @exception SWTError <ul> |
| * <li>ERROR_ITEM_NOT_REMOVED - if the operation fails because of an operating system failure</li> |
| * </ul> |
| */ |
| public void remove (int start, int end) {
|
| checkWidget();
|
| int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| if (!(0 < start && start <= end && end < args [1])) {
|
| error (SWT.ERROR_INVALID_RANGE);
|
| }
|
| int count = end - start + 1;
|
| int result = OS.PtListDeleteItemPos (handle, count, start + 1);
|
| if (result != 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
|
| }
|
|
|
| /** |
| * Removes all of the items from the receiver. |
| * <p> |
| * @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 removeAll () {
|
| checkWidget();
|
| OS.PtListDeleteAllItems (handle);
|
| }
|
|
|
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the receiver's selection changes. |
| * |
| * @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);
|
| }
|
|
|
| /** |
| * Selects the items at the given zero-relative indices in the receiver. |
| * If the item at the index was already selected, it remains |
| * selected. The range of the indices is inclusive. Indices that are |
| * out of range are ignored. |
| * |
| * @param start the start of the range |
| * @param end the end of the range |
| * |
| * @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 select (int start, int end) {
|
| checkWidget();
|
| if (start > end) return;
|
| int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| int count = args [1];
|
| if ((style & SWT.SINGLE) != 0) {
|
| int index = Math.min (count - 1, end);
|
| if (index >= start) select (index);
|
| return;
|
| }
|
| int gotoIndex = -1;
|
| for (int index=end; index>=start; index--) {
|
| if (0 <= index && index < count) {
|
| gotoIndex = index;
|
| OS.PtListSelectPos (handle, index + 1);
|
| }
|
| }
|
| if (gotoIndex != -1) OS.PtListGotoPos (handle, gotoIndex + 1);
|
| }
|
|
|
| /** |
| * Selects the items at the given zero-relative indices in the receiver. |
| * If the item at the given zero-relative index in the receiver |
| * is not selected, it is selected. If the item at the index |
| * was selected, it remains selected. Indices that are out |
| * of range and duplicate indices are ignored. |
| * |
| * @param indices the array of indices for the items to select |
| * |
| * @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> |
| */ |
| public void select (int [] indices) {
|
| checkWidget();
|
| if (indices == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (indices.length == 0) return;
|
| int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| int count = args [1];
|
| int gotoIndex = -1;
|
| for (int i=0; i<indices.length; i++) {
|
| int index = indices [i];
|
| if (0 <= index && index < count) {
|
| gotoIndex = index;
|
| OS.PtListSelectPos (handle, index + 1);
|
| }
|
| }
|
| if (gotoIndex != -1) OS.PtListGotoPos (handle, gotoIndex + 1);
|
| }
|
|
|
| /** |
| * Selects the item at the given zero-relative index in the receiver's |
| * list. If the item at the index was already selected, it remains |
| * 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 select (int index) {
|
| checkWidget();
|
| if (index < 0) return;
|
| int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| if (index < args [1]) {
|
| OS.PtListSelectPos (handle, index + 1);
|
| OS.PtListGotoPos (handle, index + 1);
|
| }
|
| }
|
|
|
| /** |
| * Selects all 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 void selectAll () {
|
| checkWidget();
|
| if ((style & SWT.SINGLE) != 0) return;
|
| int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| int count = args [1];
|
| for (int i=0; i<count; i++) {
|
| OS.PtListSelectPos (handle, i + 1);
|
| }
|
| }
|
|
|
| /** |
| * Sets the text of the item in the receiver's list at the given |
| * zero-relative index to the string argument. This is equivalent |
| * to <code>remove</code>'ing the old item at the index, and then |
| * <code>add</code>'ing the new item at that index. |
| * |
| * @param index the index for the item |
| * @param string the new text for the item |
| * |
| * @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> |
| * @exception SWTError <ul> |
| * <li>ERROR_ITEM_NOT_REMOVED - if the remove operation fails because of an operating system failure</li> |
| * <li>ERROR_ITEM_NOT_ADDED - if the add operation fails because of an operating system failure</li> |
| * </ul> |
| */ |
| public void setItem (int index, String string) {
|
| checkWidget();
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0};
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| if (!(0 <= index && index < args [1])) {
|
| error (SWT.ERROR_INVALID_RANGE);
|
| }
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| int ptr = OS.malloc (buffer.length);
|
| OS.memmove (ptr, buffer, buffer.length);
|
| OS.PtListReplaceItemPos (handle, new int [] {ptr}, 1, index + 1);
|
| OS.free (ptr);
|
| }
|
|
|
| /** |
| * Sets the receiver's items to be the given array of items. |
| * |
| * @param items the array 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> |
| * @exception SWTError <ul> |
| * <li>ERROR_ITEM_NOT_ADDED - if the operation fails because of an operating system failure</li> |
| * </ul> |
| */ |
| public void setItems (String [] items) {
|
| checkWidget();
|
| if (items == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| OS.PtListDeleteAllItems (handle);
|
| int[] itemsPtr = new int [items.length];
|
| for (int i=0; i<itemsPtr.length; i++) {
|
| byte [] buffer = Converter.wcsToMbcs (null, items [i], true);
|
| int ptr = OS.malloc (buffer.length);
|
| OS.memmove (ptr, buffer, buffer.length);
|
| itemsPtr [i] = ptr;
|
| }
|
| OS.PtListAddItems (handle, itemsPtr, itemsPtr.length, 0);
|
| for (int i=0; i<itemsPtr.length; i++) {
|
| OS.free (itemsPtr [i]);
|
| }
|
| }
|
|
|
| /** |
| * Selects the items at the given zero-relative indices in the receiver. |
| * The current selected if first cleared, then the new items are selected. |
| * |
| * @param start the start index of the items to select |
| * @param end the end index of the items 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> |
| * |
| * @see Table#deselectAll() |
| * @see Table#select(int,int) |
| */ |
| public void setSelection (int start, int end) {
|
| if ((style & SWT.MULTI) != 0) deselectAll ();
|
| select (start, end);
|
| }
|
|
|
| /** |
| * 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 selected 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> |
| * @see List#deselectAll() |
| * @see List#select(int) |
| */ |
| public void setSelection (int index) {
|
| if ((style & SWT.MULTI) != 0) deselectAll ();
|
| select (index);
|
| }
|
|
|
| /** |
| * Selects the items at the given zero-relative indices in the receiver. |
| * The current selection is first cleared, then the new items are selected. |
| * |
| * @param indices the indices of the items to select |
| * |
| * @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 List#deselectAll() |
| * @see List#select(int[]) |
| */ |
| public void setSelection(int[] indices) {
|
| if ((style & SWT.MULTI) != 0) deselectAll ();
|
| select (indices);
|
| }
|
|
|
| /** |
| * 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 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 List#deselectAll() |
| * @see List#select(int) |
| */ |
| public void setSelection (String [] items) {
|
| checkWidget();
|
| if (items == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if ((style & SWT.MULTI) != 0) deselectAll ();
|
| for (int i=items.length-1; i>=0; --i) {
|
| int index = 0;
|
| String string = items [i];
|
| if (string != null) {
|
| while ((index = indexOf (string, index)) != -1) {
|
| select (index);
|
| if (((style & SWT.SINGLE) != 0) && isSelected (index)) return;
|
| index++;
|
| }
|
| }
|
| }
|
| if ((style & SWT.SINGLE) != 0) deselectAll ();
|
| }
|
|
|
| /** |
| * Sets the zero-relative index of the item which is currently |
| * at the top of the receiver. This index can change when items |
| * are scrolled or new items are added and removed. |
| * |
| * @param index the index of the top 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 void setTopIndex (int index) {
|
| checkWidget();
|
| int [] args = new int [] {OS.Pt_ARG_TOP_ITEM_POS, index + 1, 0};
|
| OS.PtSetResources (handle, args.length / 3, args);
|
| }
|
|
|
| /** |
| * Shows the selection. If the selection is already showing in the receiver, |
| * this method simply returns. Otherwise, the items are scrolled until |
| * the selection is visible. |
| * |
| * @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> |
| */ |
| public void showSelection () {
|
| checkWidget();
|
| int [] args = new int [] {
|
| OS.Pt_ARG_LIST_SEL_COUNT, 0, 0,
|
| OS.Pt_ARG_SELECTION_INDEXES, 0, 0,
|
| OS.Pt_ARG_TOP_ITEM_POS, 0, 0,
|
| OS.Pt_ARG_VISIBLE_COUNT, 0, 0,
|
| OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0
|
| };
|
| OS.PtGetResources (handle, args.length / 3, args);
|
| if (args [1] == 0) return;
|
| short [] buffer = new short [1];
|
| OS.memmove (buffer, args [4], 2);
|
| int index = buffer [0] - 1;
|
| int topIndex = args [7] - 1, visibleCount = args [10], count = args [13];
|
| int bottomIndex = Math.min (topIndex + visibleCount - 1, count);
|
| if ((topIndex <= index) && (index <= bottomIndex)) return;
|
| int lastIndex = Math.max (1, count - visibleCount + 1);
|
| int newTop = Math.min (Math.max (index - (visibleCount / 2), 1), lastIndex);
|
| args = new int [] {OS.Pt_ARG_TOP_ITEM_POS, newTop, 0};
|
| OS.PtSetResources (handle, args.length / 3, args);
|
| }
|
|
|
| int traversalCode (int key_sym, PhKeyEvent_t ke) {
|
| int code = super.traversalCode (key_sym, ke);
|
| if (key_sym == OS.Pk_Up || key_sym == OS.Pk_Down) {
|
| code &= ~(SWT.TRAVERSE_ARROW_NEXT | SWT.TRAVERSE_ARROW_PREVIOUS);
|
| }
|
| return code;
|
| }
|
|
|
| }
|