| package org.eclipse.swt.widgets;
|
|
|
| /*
|
| * (c) Copyright IBM Corp. 2000, 2001.
|
| * All Rights Reserved
|
| */
|
|
|
| import org.eclipse.swt.internal.*;
|
| import org.eclipse.swt.internal.motif.*;
|
| 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 /*final*/ class List extends Scrollable {
|
| int rows, columns;
|
| /** |
| * 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) {
|
| /**
|
| * Feature in Motif. It is not possible to create
|
| * scrolled list that will never show the vertical
|
| * scroll bar. Therefore, not matter what style
|
| * bits are specified, set the V_SCROLL bits to
|
| * match the widget Motif creates.
|
| */
|
| super (parent, checkStyle (style | SWT.V_SCROLL));
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| int xmString = OS.XmStringCreateLocalized (buffer);
|
| if (xmString == 0) error (SWT.ERROR_ITEM_NOT_ADDED);
|
| OS.XmListAddItemUnselected (handle, xmString, 0);
|
| OS.XmStringFree (xmString);
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (index == -1) error (SWT.ERROR_INVALID_RANGE);
|
| /*
|
| * Feature in Motif. When an index is out of range,
|
| * the list widget adds the item at the end. This
|
| * behavior is not wrong but it is unwanted. The
|
| * fix is to check the range before adding the item.
|
| */
|
| int [] argList = {OS.XmNitemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| if (!(0 <= index && index <= argList [1])) {
|
| error (SWT.ERROR_INVALID_RANGE);
|
| }
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| int xmString = OS.XmStringCreateLocalized (buffer);
|
| if (xmString == 0) error (SWT.ERROR_ITEM_NOT_ADDED);
|
| OS.XmListAddItemUnselected (handle, xmString, index + 1);
|
| OS.XmStringFree (xmString);
|
| }
|
| /**
|
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| 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) {
|
| return checkBits (style, SWT.SINGLE, SWT.MULTI, 0, 0, 0, 0);
|
| }
|
| public Point computeSize (int wHint, int hHint, boolean changed) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| XtWidgetGeometry result = new XtWidgetGeometry ();
|
| result.request_mode = OS.CWWidth;
|
| OS.XtQueryGeometry (handle, null, result);
|
| int width = result.width, height = 0;
|
| if (wHint != SWT.DEFAULT) width = wHint;
|
| if (hHint != SWT.DEFAULT) height = hHint;
|
| if (hHint == SWT.DEFAULT || wHint == SWT.DEFAULT) {
|
| int count = rows;
|
| if (count == 0) {
|
| int [] argList = {OS.XmNitemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| count = argList [1];
|
| }
|
| if (hHint == SWT.DEFAULT) {
|
| if (count == 0) {
|
| height = DEFAULT_HEIGHT;
|
| } else {
|
| height = getItemHeight () * count;
|
| }
|
| }
|
| if (wHint == SWT.DEFAULT && count == 0) {
|
| width = DEFAULT_WIDTH;
|
| }
|
| }
|
| Rectangle rect = computeTrim (0, 0, width, height);
|
| return new Point (rect.width, rect.height);
|
| }
|
| public Rectangle computeTrim (int x, int y, int width, int height) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| Display display = getDisplay ();
|
| int border = getBorderWidth ();
|
| int trimX = x - border;
|
| int trimY = y - border;
|
| int trimWidth = width + (border * 2);
|
| int trimHeight = height + (border * 2);
|
| if (horizontalBar != null) {
|
| int [] argList = {OS.XmNheight, 0};
|
| OS.XtGetValues (horizontalBar.handle, argList, argList.length / 2);
|
| /**
|
| * Motif adds four pixels between the bottom of the
|
| * list and the horizontal scroll bar. Add those now.
|
| */
|
| trimHeight += argList [1] + 4;
|
| trimY -= display.scrolledInsetY;
|
| if (verticalBar != null) {
|
| trimX -= display.scrolledInsetX;
|
| }
|
| }
|
| if (verticalBar != null) {
|
| int [] argList = {OS.XmNwidth, 0};
|
| OS.XtGetValues (verticalBar.handle, argList, argList.length / 2);
|
| trimWidth += argList [1];
|
| trimX -= display.scrolledInsetX;
|
| if (horizontalBar != null) {
|
| trimY -= display.scrolledInsetY;
|
| }
|
| }
|
| int [] argList = {
|
| OS.XmNhighlightThickness, 0, /* 1 */
|
| OS.XmNshadowThickness, 0, /* 3 */
|
| OS.XmNlistMarginWidth, 0, /* 5 */
|
| OS.XmNlistMarginHeight, 0 /* 7 */
|
| };
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| int thickness = argList [1] + (argList [3] * 2);
|
| trimWidth += thickness + argList [5] + 1;
|
| trimHeight += thickness + argList [7] + 1;
|
| trimX -= argList [1] + argList [3] + argList [5];
|
| trimY -= argList [1] + argList [3] + argList [7];
|
| return new Rectangle (trimX, trimY, trimWidth, trimHeight);
|
| }
|
| void createHandle (int index) {
|
| state |= HANDLE;
|
|
|
| /*
|
| * Feature in Motif. When items are added or removed
|
| * from a list, it may request and be granted, a new
|
| * preferred size. This behavior is unwanted. The fix
|
| * is to create a parent for the list that will disallow
|
| * geometry requests.
|
| */
|
| int parentHandle = parent.handle;
|
| int [] argList1 = {OS.XmNancestorSensitive, 1};
|
| formHandle = OS.XmCreateForm (parentHandle, null, argList1, argList1.length / 2);
|
| if (formHandle == 0) error (SWT.ERROR_NO_HANDLES);
|
| int selectionPolicy = OS.XmBROWSE_SELECT, listSizePolicy = OS.XmCONSTANT;
|
| if ((style & SWT.MULTI) != 0) {
|
| selectionPolicy = OS.XmEXTENDED_SELECT;
|
| if ((style & SWT.SIMPLE) != 0) selectionPolicy = OS.XmMULTIPLE_SELECT;
|
| }
|
| if ((style & SWT.H_SCROLL) == 0) listSizePolicy = OS.XmVARIABLE;
|
| int [] argList2 = {
|
| OS.XmNlistSizePolicy, listSizePolicy,
|
| OS.XmNselectionPolicy, selectionPolicy,
|
| OS.XmNtopAttachment, OS.XmATTACH_FORM,
|
| OS.XmNbottomAttachment, OS.XmATTACH_FORM,
|
| OS.XmNleftAttachment, OS.XmATTACH_FORM,
|
| OS.XmNrightAttachment, OS.XmATTACH_FORM,
|
| OS.XmNresizable, 0,
|
| // OS.XmNmatchBehavior, OS.XmNONE,
|
| };
|
| if ((style & (SWT.H_SCROLL | SWT.V_SCROLL)) == 0) {
|
| handle = OS.XmCreateList (formHandle, null, argList2, argList2.length / 2);
|
| if (handle == 0) error (SWT.ERROR_NO_HANDLES);
|
| } else {
|
| handle = OS.XmCreateScrolledList (formHandle, null, argList2, argList2.length / 2);
|
| if (handle == 0) error (SWT.ERROR_NO_HANDLES);
|
| scrolledHandle = OS.XtParent (handle);
|
| }
|
| }
|
| ScrollBar createScrollBar (int type) {
|
| return createStandardBar (type);
|
| }
|
| int defaultBackground () {
|
| return getDisplay ().listBackground;
|
| }
|
| int defaultFont () {
|
| return getDisplay ().listFont;
|
| }
|
| int defaultForeground () {
|
| return getDisplay ().listForeground;
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| /*
|
| * Note: We rely on the fact that XmListDeselectPos ()
|
| * fails silently when the indices are out of range.
|
| */
|
| if (index != -1) OS.XmListDeselectPos (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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (start > end) return;
|
| /*
|
| * Note: We rely on the fact that XmListDeselectPos ()
|
| * fails silently when the indices are out of range.
|
| */
|
| for (int i=start; i<=end; i++) {
|
| int index = i + 1;
|
| if (index != 0) OS.XmListDeselectPos (handle, index);
|
| }
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (indices == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| /*
|
| * Note: We rely on the fact that XmListDeselectPos ()
|
| * fails silently when the indices are out of range.
|
| */
|
| for (int i=0; i<indices.length; i++) {
|
| int index = indices [i] + 1;
|
| if (index != 0) OS.XmListDeselectPos (handle, index);
|
| }
|
| }
|
| /** |
| * 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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| OS.XmListDeselectAllItems (handle);
|
| }
|
| /** |
| * 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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| return OS.XmListGetKbdItemPos (handle) - 1;
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| int [] argList = {OS.XmNitemCount, 0, OS.XmNitems, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| if (!(0 <= index && index < argList [1])) {
|
| error (SWT.ERROR_INVALID_RANGE);
|
| }
|
| if (argList [3] == 0) error (SWT.ERROR_CANNOT_GET_ITEM);
|
| int ptr = argList [3] + (index * 4);
|
| int [] buffer1 = new int [1];
|
| OS.memmove (buffer1, ptr, 4);
|
| ptr = buffer1 [0];
|
| int address = OS.XmStringUnparse (
|
| ptr,
|
| null,
|
| OS.XmCHARSET_TEXT,
|
| OS.XmCHARSET_TEXT,
|
| null,
|
| 0,
|
| OS.XmOUTPUT_ALL);
|
| if (address == 0) error (SWT.ERROR_CANNOT_GET_ITEM);
|
| int length = OS.strlen (address);
|
| byte [] buffer = new byte [length];
|
| OS.memmove (buffer, address, length);
|
| OS.XtFree (address);
|
| return new String (Converter.mbcsToWcs (null, buffer));
|
| }
|
| /** |
| * 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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| int [] argList = {OS.XmNitemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| return argList [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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| int [] argList = {
|
| OS.XmNlistSpacing, 0,
|
| OS.XmNhighlightThickness, 0,
|
| };
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| int spacing = argList [1], highlight = argList [3];
|
|
|
| /* Result is from empirical analysis on Linux and AIX */
|
| return getFontHeight () + spacing + highlight + 1;
|
| }
|
| /** |
| * 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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| int [] argList = {OS.XmNitems, 0, OS.XmNitemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| int items = argList [1], itemCount = argList [3];
|
| int [] buffer1 = new int [1];
|
| String [] result = new String [itemCount];
|
| for (int i=0; i<itemCount; i++) {
|
| OS.memmove (buffer1, items, 4);
|
| int ptr = buffer1 [0];
|
| int address = OS.XmStringUnparse (
|
| ptr,
|
| null,
|
| OS.XmCHARSET_TEXT,
|
| OS.XmCHARSET_TEXT,
|
| null,
|
| 0,
|
| OS.XmOUTPUT_ALL);
|
| if (address == 0) error (SWT.ERROR_CANNOT_GET_ITEM);
|
| int length = OS.strlen (address);
|
| byte [] buffer = new byte [length];
|
| OS.memmove (buffer, address, length);
|
| OS.XtFree (address);
|
| result[i] = new String (Converter.mbcsToWcs (null, buffer));
|
| items += 4;
|
| }
|
| 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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| int [] argList = {OS.XmNselectedItems, 0, OS.XmNselectedItemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| int items = argList [1], itemCount = argList [3];
|
| int [] buffer1 = new int [1];
|
| String [] result = new String [itemCount];
|
| for (int i=0; i<itemCount; i++) {
|
| OS.memmove (buffer1, items, 4);
|
| int ptr = buffer1 [0];
|
| int address = OS.XmStringUnparse (
|
| ptr,
|
| null,
|
| OS.XmCHARSET_TEXT,
|
| OS.XmCHARSET_TEXT,
|
| null,
|
| 0,
|
| OS.XmOUTPUT_ALL);
|
| if (address == 0) error (SWT.ERROR_CANNOT_GET_ITEM);
|
| int length = OS.strlen (address);
|
| byte [] buffer = new byte [length];
|
| OS.memmove (buffer, address, length);
|
| OS.XtFree (address);
|
| result[i] = new String (Converter.mbcsToWcs (null, buffer));
|
| items += 4;
|
| }
|
| 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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| int [] argList = {OS.XmNselectedItemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| return argList [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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| int index = OS.XmListGetKbdItemPos (handle);
|
| if (OS.XmListPosSelected (handle, index)) return index - 1;
|
| int [] count = new int [1], positions = new int [1];
|
| if (!OS.XmListGetSelectedPos (handle, positions, count)) return -1;
|
| if (count [0] == 0) return -1;
|
| int address = positions [0];
|
| int [] indices = new int [1];
|
| OS.memmove (indices, address, 4);
|
| OS.XtFree (address);
|
| return indices [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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| int [] count = new int [1], positions = new int [1];
|
| OS.XmListGetSelectedPos (handle, positions, count);
|
| int [] result = new int [count [0]];
|
| OS.memmove (result, positions [0], count [0] * 4);
|
| if (positions [0] != 0) OS.XtFree (positions [0]);
|
| for (int i=0; i<result.length; i++) --result [i];
|
| 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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| int [] argList = {OS.XmNtopItemPosition, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| return argList [1] - 1;
|
| }
|
| void hookEvents () {
|
| super.hookEvents ();
|
| int windowProc = getDisplay ().windowProc;
|
| OS.XtAddCallback (handle, OS.XmNbrowseSelectionCallback, windowProc, SWT.Selection);
|
| OS.XtAddCallback (handle, OS.XmNextendedSelectionCallback, windowProc, SWT.Selection);
|
| OS.XtAddCallback (handle, OS.XmNdefaultActionCallback, 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| int xmString = OS.XmStringCreateLocalized (buffer);
|
| if (xmString == 0) return -1;
|
| int index = OS.XmListItemPos (handle, xmString);
|
| OS.XmStringFree (xmString);
|
| return index - 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| int [] argList = {OS.XmNitems, 0, OS.XmNitemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| int items = argList [1], itemCount = argList [3];
|
| if (!((0 <= start) && (start < itemCount))) return -1;
|
| byte [] buffer1 = Converter.wcsToMbcs (null, string, true);
|
| int xmString = OS.XmStringCreateLocalized (buffer1);
|
| if (xmString == 0) return -1;
|
| int index = start;
|
| items += start * 4;
|
| int [] buffer2 = new int [1];
|
| while (index < itemCount) {
|
| OS.memmove (buffer2, items, 4);
|
| if (OS.XmStringCompare (buffer2 [0], xmString)) break;
|
| items += 4; index++;
|
| }
|
| OS.XmStringFree (xmString);
|
| if (index == itemCount) return -1;
|
| return index;
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (index == -1) return false;
|
| return OS.XmListPosSelected (handle, index + 1);
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (index == -1) error (SWT.ERROR_INVALID_RANGE);
|
| /*
|
| * Feature in Motif. An index out of range handled
|
| * correctly by the list widget but causes an unwanted
|
| * Xm Warning. The fix is to check the range before
|
| * deleting an item.
|
| */
|
| int [] argList = {OS.XmNitemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| if (!(0 <= index && index < argList [1])) {
|
| error (SWT.ERROR_INVALID_RANGE);
|
| }
|
| OS.XmListDeletePos (handle, index + 1);
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (start > end) return;
|
| int count = end - start + 1;
|
| /*
|
| * Feature in Motif. An index out of range handled
|
| * correctly by the list widget but causes an unwanted
|
| * Xm Warning. The fix is to check the range before
|
| * deleting an item.
|
| */
|
| int [] argList = {OS.XmNitemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| if (!(0 <= start && start < argList [1])) {
|
| error (SWT.ERROR_INVALID_RANGE);
|
| }
|
| OS.XmListDeleteItemsPos (handle, count, start + 1);
|
| if (end >= argList [1]) error (SWT.ERROR_INVALID_RANGE);
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| int xmString = OS.XmStringCreateLocalized (buffer);
|
| if (xmString == 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
|
| int index = OS.XmListItemPos (handle, xmString);
|
| OS.XmStringFree (xmString);
|
| if (index == 0) error (SWT.ERROR_INVALID_ARGUMENT);
|
| OS.XmListDeletePos (handle, 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (indices == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| /*
|
| * Feature in Motif. An index out of range handled
|
| * correctly by the list widget but causes an unwanted
|
| * Xm Warning. The fix is to check the range before
|
| * deleting an item.
|
| */
|
| int [] argList = {OS.XmNitemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| int length = 0, count = argList [1];
|
| int [] newIndices = new int [indices.length];
|
| for (int i=0; i<indices.length; i++) {
|
| int index = indices [i];
|
| if (!(0 <= index && index < count)) break;
|
| newIndices [length++] = index + 1;
|
| }
|
| OS.XmListDeletePositions (handle, newIndices, length);
|
| if (length < indices.length) error (SWT.ERROR_INVALID_RANGE);
|
| }
|
| /** |
| * 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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| OS.XmListDeselectAllItems (handle);
|
| OS.XmListDeleteAllItems (handle);
|
| /*
|
| * Bug in AIX. When all list items are deleted
|
| * from a scrolled list that is currently showing a
|
| * horizontal scroll bar, the horizontal scroll bar
|
| * is hidden, but the list does not grow to take up
|
| * the space once occupied by the bar. The fix is
|
| * of force a resize of the list.
|
| */
|
| if ((style & SWT.H_SCROLL) != 0) OS.XtResizeWindow (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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (eventTable == null) return;
|
| eventTable.unhook(SWT.Selection, listener);
|
| eventTable.unhook(SWT.DefaultSelection,listener);
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (index == -1) return;
|
| if (OS.XmListPosSelected (handle, index + 1)) return;
|
| /*
|
| * Feature in MOTIF. The X/MOTIF 1.2 spec says that XmListSelectPos ()
|
| * in a XmEXTENDED_SELECT list widget will add the index to the selected
|
| * indices. The observed behavior does not match the spec. The fix is
|
| * to temporarily switch the XmNselectionPolicy to XmMULTIPLE_SELECT
|
| * and then switch it back because XmListSelectPost () works as specified
|
| * for XmMULTIPLE_SELECT list widgets.
|
| */
|
| int [] argList = {OS.XmNselectionPolicy, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| int oldPolicy = argList [1];
|
| if (oldPolicy == OS.XmEXTENDED_SELECT) {
|
| argList [1] = OS.XmMULTIPLE_SELECT;
|
| OS.XtSetValues (handle, argList, argList.length / 2);
|
| }
|
| /*
|
| * Note: We rely on the fact that XmListSelectPos ()
|
| * fails silently when the indices are out of range.
|
| */
|
| OS.XmListSelectPos (handle, index + 1, false);
|
| if (oldPolicy == OS.XmEXTENDED_SELECT) {
|
| argList [1] = OS.XmEXTENDED_SELECT;
|
| OS.XtSetValues (handle, argList, argList.length / 2);
|
| }
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (start > end) return;
|
| if ((style & SWT.SINGLE) != 0) {
|
| int [] argList = {OS.XmNitemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| int index = Math.min (argList[1] - 1, end) + 1;
|
| if (index != 0 && index >= start) OS.XmListSelectPos (handle, index, false);
|
| return;
|
| }
|
| /*
|
| * Feature in MOTIF. The X/MOTIF 1.2 spec says that XmListSelectPos ()
|
| * in a XmEXTENDED_SELECT list widget will add the index to the selected
|
| * indices. The observed behavior does not match the spec. The fix is
|
| * to temporarily switch the XmNselectionPolicy to XmMULTIPLE_SELECT
|
| * and then switch it back because XmListSelectPos () works as specified
|
| * for XmMULTIPLE_SELECT list widgets.
|
| */
|
| int [] argList = {OS.XmNselectionPolicy, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| int oldPolicy = argList [1];
|
| if (oldPolicy == OS.XmEXTENDED_SELECT) {
|
| argList [1] = OS.XmMULTIPLE_SELECT;
|
| OS.XtSetValues (handle, argList, argList.length / 2);
|
| }
|
| /*
|
| * Note: We rely on the fact that XmListSelectPos ()
|
| * fails silently when the indices are out of range.
|
| */
|
| for (int i=start; i<=end; i++) {
|
| int index = i + 1;
|
| if ((index != 0) && !OS.XmListPosSelected (handle, index)) {
|
| OS.XmListSelectPos (handle, index, false);
|
| }
|
| }
|
| if (oldPolicy == OS.XmEXTENDED_SELECT) {
|
| argList [1] = OS.XmEXTENDED_SELECT;
|
| OS.XtSetValues (handle, argList, argList.length / 2);
|
| }
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (indices == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if ((style & SWT.SINGLE) != 0) {
|
| int [] argList = {OS.XmNitemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| int count = argList [1];
|
| for (int i = 0; i < indices.length; i++) {
|
| int index = indices [i];
|
| if (0 <= index && index < count) {
|
| select (index);
|
| return;
|
| }
|
| }
|
| return;
|
| }
|
| /*
|
| * Feature in MOTIF. The X/MOTIF 1.2 spec says that XmListSelectPos ()
|
| * in a XmEXTENDED_SELECT list widget will add the index to the selected
|
| * indices. The observed behavior does not match the spec. The fix is
|
| * to temporarily switch the XmNselectionPolicy to XmMULTIPLE_SELECT
|
| * and then switch it back because XmListSelectPos () works as specified
|
| * for XmMULTIPLE_SELECT list widgets.
|
| */
|
| int [] argList = {OS.XmNselectionPolicy, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| int oldPolicy = argList [1];
|
| if (oldPolicy == OS.XmEXTENDED_SELECT) {
|
| argList [1] = OS.XmMULTIPLE_SELECT;
|
| OS.XtSetValues (handle, argList, argList.length / 2);
|
| }
|
| /*
|
| * Note: We rely on the fact that XmListSelectPos ()
|
| * fails silently when the indices are out of range.
|
| */
|
| for (int i=0; i<indices.length; i++) {
|
| int index = indices [i] + 1;
|
| if ((index != 0) && !OS.XmListPosSelected (handle, index)) {
|
| OS.XmListSelectPos (handle, index, false);
|
| }
|
| }
|
| if (oldPolicy == OS.XmEXTENDED_SELECT) {
|
| argList [1] = OS.XmEXTENDED_SELECT;
|
| OS.XtSetValues (handle, argList, argList.length / 2);
|
| }
|
| }
|
| void select (String [] items) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| int [] table = new int [items.length];
|
| for (int i=0; i<items.length; i++) {
|
| String string = items [i];
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| int xmString = OS.XmStringCreateLocalized (buffer);
|
| table [i] = xmString;
|
| }
|
| int ptr = OS.XtMalloc (items.length * 4);
|
| OS.memmove (ptr, table, items.length * 4);
|
| int [] argList = {OS.XmNselectedItems, ptr, OS.XmNselectedItemCount, table.length};
|
| OS.XtSetValues (handle, argList, argList.length / 2);
|
| for (int i=0; i<table.length; i++) OS.XmStringFree (table [i]);
|
| OS.XtFree (ptr);
|
| OS.XmListUpdateSelectedList (handle);
|
| }
|
| /** |
| * 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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if ((style & SWT.SINGLE) != 0) return;
|
| /*
|
| * Feature in MOTIF. The X/MOTIF 1.2 spec says that XmListSelectPos ()
|
| * in a XmEXTENDED_SELECT list widget will add the index to the selected
|
| * indices. The observed behavior does not match the spec. The fix is
|
| * to temporarily switch the XmNselectionPolicy to XmMULTIPLE_SELECT
|
| * and then switch it back because XmListSelectPos () works as specified
|
| * for XmMULTIPLE_SELECT list widgets.
|
| */
|
| int [] argList = {OS.XmNselectionPolicy, 0, OS.XmNitemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| int oldPolicy = argList [1];
|
| if (oldPolicy == OS.XmEXTENDED_SELECT) {
|
| argList [1] = OS.XmMULTIPLE_SELECT;
|
| OS.XtSetValues (handle, argList, argList.length / 2);
|
| }
|
| for (int i=0; i<argList[3]; i++) {
|
| int index = i + 1;
|
| if (!OS.XmListPosSelected (handle, index)) {
|
| OS.XmListSelectPos (handle, index, false);
|
| }
|
| }
|
| if (oldPolicy == OS.XmEXTENDED_SELECT) {
|
| argList [1] = OS.XmEXTENDED_SELECT;
|
| OS.XtSetValues (handle, argList, argList.length / 2);
|
| }
|
| }
|
| public void setBounds (int x, int y, int width, int height) {
|
| super.setBounds (x, y, width, height);
|
| /*
|
| * Bug in AIX. When the receiver has a vertical scroll bar
|
| * that is currently not visible and no horizontal scroll bar
|
| * and is resized to be smaller in both the width and height
|
| * and goes from the state where the width of the longest item
|
| * is smaller than the width of the list to the state where the
|
| * width of the longest item is longer than the width of the
|
| * list, the list hides the vertical scroll bar and leaves a
|
| * blank space where it should be. This often happens when a
|
| * shell containing a list that matches the above criteria is
|
| * maximized and then restored. This is just one of a number
|
| * of repeatable cases where the scrolled window hides the
|
| * scroll bars but does not resize the list. The fix is to
|
| * detect these cases and force the scroll bars to be layed
|
| * out properly by growing and then shrinking the scrolled
|
| * window.
|
| */
|
| // fixHScroll := hScroll ~~ nil and: [
|
| // hScroll isVisible not and: [
|
| // height ~~ (self dimensionAt: XmNheight)]].
|
| // fixVScroll := vScroll ~~ nil and: [
|
| // vScroll isVisible not and: [
|
| // width ~~ (self dimensionAt: XmNwidth)]].
|
| // (fixHScroll or: [fixVScroll]) ifFalse: [^self].
|
|
|
| /* Grow and shrink the scrolled window by one pixel */
|
| if (scrolledHandle == 0) return;
|
| int [] argList = {OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0};
|
| OS.XtGetValues (scrolledHandle, argList, argList.length / 2);
|
| OS.XtResizeWidget (scrolledHandle, argList [1] + 1, argList [3], argList [5]);
|
| OS.XtResizeWidget (scrolledHandle, argList [1], argList [3], argList [5]);
|
| }
|
| void setFocusIndex (int index) {
|
| OS.XmListSetKbdItemPos (handle, index + 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (index == -1) error (SWT.ERROR_INVALID_RANGE);
|
| int [] argList = {OS.XmNitemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| if (!(0 <= index && index < argList [1])) {
|
| error (SWT.ERROR_INVALID_RANGE);
|
| }
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| int xmString = OS.XmStringCreateLocalized (buffer);
|
| if (xmString == 0) error (SWT.ERROR_ITEM_NOT_ADDED);
|
| boolean isSelected = OS.XmListPosSelected (handle, index + 1);
|
| OS.XmListReplaceItemsPosUnselected (handle, new int [] {xmString}, 1, index + 1);
|
| if (isSelected) OS.XmListSelectPos (handle, index + 1, false);
|
| OS.XmStringFree (xmString);
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (items == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| /*
|
| * Bug in AIX. When all list items are replaced
|
| * in a scrolled list that is currently showing a
|
| * horizontal scroll bar, the horizontal scroll bar
|
| * is hidden, but the list does not grow to take up
|
| * the space once occupied by the bar. The fix is
|
| * of force the horizontal bar to be recomputed by
|
| * removing all items and resizing the list.
|
| */
|
| OS.XmListSetPos (handle, 0);
|
| OS.XmListDeselectAllItems (handle);
|
| if ((style & SWT.H_SCROLL) != 0) {
|
| OS.XmListDeleteAllItems (handle);
|
| }
|
| int index = 0;
|
| int [] table = new int [items.length];
|
| while (index < items.length) {
|
| String string = items [index];
|
| if (string == null) break;
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| int xmString = OS.XmStringCreateLocalized (buffer);
|
| if (xmString == 0) break;
|
| table [index++] = xmString;
|
| }
|
| int ptr = OS.XtMalloc (index * 4);
|
| OS.memmove (ptr, table, index * 4);
|
| int [] argList = {OS.XmNitems, ptr, OS.XmNitemCount, index};
|
| OS.XtSetValues (handle, argList, argList.length / 2);
|
| for (int i=0; i<index; i++) OS.XmStringFree (table [i]);
|
| OS.XtFree (ptr);
|
| /*
|
| * Bug in Motif. Resize the list to work around
|
| * the horizontal scroll bar display bug described
|
| * above.
|
| */
|
| if ((style & SWT.H_SCROLL) != 0) {
|
| OS.XtResizeWindow (handle);
|
| }
|
| if (index < items.length) error (SWT.ERROR_ITEM_NOT_ADDED);
|
| }
|
| /** |
| * 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 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 items at the given zero-relative indices in the receiver. |
| * The current selected of 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (items == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if ((style & SWT.SINGLE) != 0) {
|
| for (int i=items.length-1; i>=0; --i) {
|
| String string = items [i];
|
| if (string != null) {
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| int xmString = OS.XmStringCreateLocalized (buffer);
|
| if (xmString != 0) {
|
| int index = OS.XmListItemPos (handle, xmString);
|
| if (index != 0) OS.XmListSelectPos (handle, index, false);
|
| OS.XmStringFree (xmString);
|
| if ((index != 0) && OS.XmListPosSelected (handle, index)) return;
|
| }
|
| }
|
| }
|
| OS.XmListDeselectAllItems (handle);
|
| return;
|
| }
|
| OS.XmListDeselectAllItems (handle);
|
| int length = 0;
|
| int [] table = new int [items.length];
|
| for (int i=0; i<items.length; i++) {
|
| String string = items [i];
|
| if (string != null) {
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| int xmString = OS.XmStringCreateLocalized (buffer);
|
| if (xmString != 0) table [length++] = xmString;
|
| }
|
| }
|
| int ptr = OS.XtMalloc (length * 4);
|
| OS.memmove (ptr, table, length * 4);
|
| int [] argList = {OS.XmNselectedItems, ptr, OS.XmNselectedItemCount, length};
|
| OS.XtSetValues (handle, argList, argList.length / 2);
|
| for (int i=0; i<length; i++) OS.XmStringFree (table [i]);
|
| OS.XtFree (ptr);
|
| OS.XmListUpdateSelectedList (handle);
|
| }
|
| public void setSize (int width, int height) {
|
| super.setSize (width, height);
|
| /*
|
| * Bug in AIX. When the receiver has a vertical scroll bar
|
| * that is currently not visible and no horizontal scroll bar
|
| * and is resized to be smaller in both the width and height
|
| * and goes from the state where the width of the longest item
|
| * is smaller than the width of the list to the state where the
|
| * width of the longest item is longer than the width of the
|
| * list, the list hides the vertical scroll bar and leaves a
|
| * blank space where it should be. This often happens when a
|
| * shell containing a list that matches the above criteria is
|
| * maximized and then restored. This is just one of a number
|
| * of repeatable cases where the scrolled window hides the
|
| * scroll bars but does not resize the list. The fix is to
|
| * detect these cases and force the scroll bars to be layed
|
| * out properly by growing and then shrinking the scrolled
|
| * window.
|
| */
|
| // fixHScroll := hScroll ~~ nil and: [
|
| // hScroll isVisible not and: [
|
| // height ~~ (self dimensionAt: XmNheight)]].
|
| // fixVScroll := vScroll ~~ nil and: [
|
| // vScroll isVisible not and: [
|
| // width ~~ (self dimensionAt: XmNwidth)]].
|
| // (fixHScroll or: [fixVScroll]) ifFalse: [^self].
|
|
|
| /* Grow and shrink the scrolled window by one pixel */
|
| if (scrolledHandle == 0) return;
|
| int [] argList = {OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0};
|
| OS.XtGetValues (scrolledHandle, argList, argList.length / 2);
|
| OS.XtResizeWidget (scrolledHandle, argList [1] + 1, argList [3], argList [5]);
|
| OS.XtResizeWidget (scrolledHandle, argList [1], argList [3], argList [5]);
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| int [] argList = {OS.XmNitemCount, 0, OS.XmNvisibleItemCount, 0};
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| int newIndex = Math.max (1, Math.min (index + 1, argList [1]));
|
| int lastIndex = Math.max (1, argList [1] - argList [3] + 1);
|
| if (newIndex > lastIndex) newIndex = lastIndex;
|
| OS.XmListSetPos (handle, newIndex);
|
| }
|
| /** |
| * 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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| int [] buffer = new int [1], positions = new int [1];
|
| if (!OS.XmListGetSelectedPos (handle, positions, buffer)) return;
|
| if (buffer [0] == 0) return;
|
| int address = positions [0];
|
| int [] indices = new int [1];
|
| OS.memmove (indices, address, 4);
|
| OS.XtFree (address);
|
| int index = indices [0];
|
| int [] argList = {
|
| OS.XmNtopItemPosition, 0,
|
| OS.XmNvisibleItemCount, 0,
|
| OS.XmNitemCount, 0,
|
| };
|
| OS.XtGetValues (handle, argList, argList.length / 2);
|
| int topIndex = argList [1], visibleCount = argList [3], count = argList [5];
|
| 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);
|
| OS.XmListSetPos (handle, newTop);
|
| }
|
| int topHandle () {
|
| /*
|
| * Normally, when a composite has both a form handle
|
| * and a scrolled handle, the scrolled handle is the
|
| * parent of the form handle. In the case of a list,
|
| * both handles are present but the form handle is
|
| * parent of the scrolled handle and therefore is
|
| * the top handle of the list.
|
| */
|
| return formHandle;
|
| }
|
| }
|
