| package org.eclipse.swt.widgets; |
| |
| /* |
| * (c) Copyright IBM Corp. 2000, 2001. |
| * All Rights Reserved |
| */ |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gtk.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.events.*; |
| |
| /** |
| * Instances of this class are controls that allow the user |
| * to choose an item from a list of items, or optionally |
| * enter a new value by typing it into an editable text |
| * field. Often, <code>Combo</code>s are used in the same place |
| * where a single selection <code>List</code> widget could |
| * be used but space is limited. A <code>Combo</code> takes |
| * less space than a <code>List</code> widget and shows |
| * similar information. |
| * <p> |
| * Note: Since <code>Combo</code>s can contain both a list |
| * and an editable text field, it is possible to confuse methods |
| * which access one versus the other (compare for example, |
| * <code>clearSelection()</code> and <code>deselectAll()</code>). |
| * The API documentation is careful to indicate either "the |
| * receiver's list" or the "the receiver's text field" to |
| * distinguish between the two cases. |
| * </p><p> |
| * Note that although this class is a subclass of <code>Composite</code>, |
| * it does not make sense to add children to it, or set a layout on it. |
| * </p> |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>DROP_DOWN, READ_ONLY, SIMPLE</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>DefaultSelection, Modify, Selection</dd> |
| * </dl> |
| * <p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| * |
| * @see List |
| */ |
| |
| public class Combo extends Composite { |
| int padHandle, glist; |
| int textLimit = LIMIT; |
| public final static int LIMIT; |
| |
| /* |
| * These values can be different on different platforms. |
| * Therefore they are not initialized in the declaration |
| * to stop the compiler from inlining. |
| */ |
| static { |
| LIMIT = 0xFFFF; |
| } |
| |
| /** |
| * 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 Combo (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| /** |
| * 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); |
| String [] items = getItems (); |
| String [] newItems = new String [items.length + 1]; |
| System.arraycopy (items, 0, newItems, 0, items.length); |
| newItems [items.length] = string; |
| setItems (newItems); |
| } |
| |
| /** |
| * 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 (!(0 <= index && index <= getItemCount ())) { |
| error (SWT.ERROR_ITEM_NOT_ADDED); |
| } |
| String [] items = getItems (); |
| String [] newItems = new String [items.length + 1]; |
| System.arraycopy (items, 0, newItems, 0, items.length); |
| newItems [index] = string; |
| setItems (newItems); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the receiver's text is modified, by sending |
| * it one of the messages defined in the <code>ModifyListener</code> |
| * interface. |
| * |
| * @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 ModifyListener |
| * @see #removeModifyListener |
| */ |
| public void addModifyListener (ModifyListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Modify, typedListener); |
| } |
| |
| /** |
| * 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 combo's list selection changes. |
| * <code>widgetDefaultSelected</code> is typically called when ENTER is pressed the combo's text area. |
| * </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); |
| } |
| |
| static int checkStyle (int style) { |
| /* |
| * Feature in Windows. It is not possible to create |
| * a combo box that has a border using Windows style |
| * bits. All combo boxes draw their own border and |
| * do not use the standard Windows border styles. |
| * Therefore, no matter what style bits are specified, |
| * clear the BORDER bits so that the SWT style will |
| * match the Windows widget. |
| * |
| * The Windows behavior is currently implemented on |
| * all platforms. |
| */ |
| style &= ~SWT.BORDER; |
| |
| /* |
| * Even though it is legal to create this widget |
| * with scroll bars, they serve no useful purpose |
| * because they do not automatically scroll the |
| * widget's client area. The fix is to clear |
| * the SWT style. |
| */ |
| style &= ~(SWT.H_SCROLL | SWT.V_SCROLL); |
| style = checkBits (style, SWT.DROP_DOWN, SWT.SIMPLE, 0, 0, 0, 0); |
| if ((style & SWT.SIMPLE) != 0) return style & ~SWT.READ_ONLY; |
| return style; |
| } |
| |
| /** |
| * Sets the selection in the receiver's text field to an empty |
| * selection starting just before the first character. If the |
| * text field is editable, this has the effect of placing the |
| * i-beam at the start of the text. |
| * <p> |
| * Note: To clear the selected items in the receiver's list, |
| * use <code>deselectAll()</code>. |
| * </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> |
| * |
| * @see #deselectAll |
| */ |
| public void clearSelection () { |
| checkWidget(); |
| GtkCombo combo = new GtkCombo (); |
| OS.memmove (combo, handle, GtkCombo.sizeof); |
| int position = OS.gtk_editable_get_position (combo.entry); |
| OS.gtk_editable_set_position (combo.entry, position); |
| } |
| |
| void createHandle (int index) { |
| state |= HANDLE; |
| eventBoxHandle = OS.gtk_event_box_new (); |
| if (eventBoxHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| padHandle = OS.gtk_fixed_new (); |
| if (padHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| handle = OS.gtk_combo_new (); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| fixedHandle = OS.gtk_fixed_new(); |
| if (fixedHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| } |
| |
| void setHandleStyle() { |
| GtkCombo combo = new GtkCombo (); |
| OS.memmove (combo, handle, GtkCombo.sizeof); |
| boolean isEditable = (style & SWT.READ_ONLY) == 0; |
| OS.gtk_entry_set_editable (combo.entry, isEditable); |
| } |
| |
| void configure () { |
| _connectParent(); |
| OS.gtk_container_add(eventBoxHandle, padHandle); |
| OS.gtk_fixed_put (padHandle, fixedHandle, (short)0, (short)0); |
| OS.gtk_fixed_put (padHandle, handle, (short)0, (short)0); |
| } |
| |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| return _computeSize(wHint, hHint, changed); |
| } |
| |
| void showHandle() { |
| OS.gtk_widget_show(eventBoxHandle); |
| OS.gtk_widget_show(padHandle); |
| OS.gtk_widget_show(fixedHandle); |
| OS.gtk_widget_show(handle); |
| OS.gtk_widget_realize (handle); |
| } |
| |
| void deregister () { |
| super.deregister (); |
| WidgetTable.remove (padHandle); |
| GtkCombo combo = new GtkCombo (); |
| OS.memmove (combo, handle, GtkCombo.sizeof); |
| WidgetTable.remove (combo.entry); |
| WidgetTable.remove (combo.list); |
| WidgetTable.remove (combo.button); |
| } |
| |
| void hookEvents () { |
| // TO DO - expose, enter/exit, focus in/out |
| super.hookEvents (); |
| GtkCombo combo = new GtkCombo (); |
| OS.memmove (combo, handle, GtkCombo.sizeof); |
| // TO DO - fix multiple selection events for one user action |
| signal_connect (combo.list, "select_child", SWT.Selection, 3); |
| signal_connect_after (combo.entry, "changed", SWT.Modify, 2); |
| int mask = |
| OS.GDK_POINTER_MOTION_MASK | |
| OS.GDK_BUTTON_PRESS_MASK | OS.GDK_BUTTON_RELEASE_MASK | |
| OS.GDK_KEY_PRESS_MASK | OS.GDK_KEY_RELEASE_MASK; |
| int [] handles = new int [] {combo.entry, combo.list, combo.button}; |
| for (int i=0; i<handles.length; i++) { |
| int handle = handles [i]; |
| if (!OS.GTK_WIDGET_NO_WINDOW (handle)) { |
| OS.gtk_widget_add_events (handle, mask); |
| } |
| signal_connect_after (handle, "motion_notify_event", SWT.MouseMove, 3); |
| signal_connect_after (handle, "button_press_event", SWT.MouseDown, 3); |
| signal_connect_after (handle, "button_release_event", SWT.MouseUp, 3); |
| signal_connect_after (handle, "key_press_event", SWT.KeyDown, 3); |
| signal_connect_after (handle, "key_release_event", SWT.KeyUp, 3); |
| } |
| } |
| |
| int topHandle() { return eventBoxHandle; } |
| int parentingHandle() { return fixedHandle; } |
| boolean isMyHandle(int h) { |
| if (h==eventBoxHandle) return true; |
| if (h==padHandle) return true; |
| if (h==fixedHandle) return true; |
| if (h==handle) return true; |
| GtkCombo combo = new GtkCombo (); |
| OS.memmove (combo, handle, GtkCombo.sizeof); |
| if (h== combo.entry) return true; |
| if (h== combo.list) return true; |
| if (h== combo.button) return true; |
| return false; |
| } |
| |
| void _connectChild (int h) { |
| OS.gtk_fixed_put (fixedHandle, h, (short)0, (short)0); |
| } |
| |
| Point _getClientAreaSize () { |
| return UtilFuncs.getSize(fixedHandle); |
| } |
| |
| boolean _setSize(int width, int height) { |
| boolean differentExtent = UtilFuncs.setSize(eventBoxHandle, width,height); |
| UtilFuncs.setSize (fixedHandle, width,height); |
| UtilFuncs.setSize (handle, width,height); |
| return differentExtent; |
| } |
| |
| /** |
| * Deselects the item at the given zero-relative index in the receiver's |
| * list. 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(); |
| setItems (getItems ()); |
| } |
| |
| /** |
| * Deselects all selected items in the receiver's list. |
| * <p> |
| * Note: To clear the selection in the receiver's text field, |
| * use <code>clearSelection()</code>. |
| * </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> |
| * |
| * @see #clearSelection |
| */ |
| public void deselectAll () { |
| checkWidget(); |
| setItems (getItems ()); |
| } |
| |
| /* |
| * FIXME |
| protected boolean hasFocus () { |
| return super.hasFocus(); |
| } |
| */ |
| |
| /** |
| * Returns the item at the given, zero-relative index in the |
| * receiver's list. 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(); |
| String [] items = getItems (); |
| if (!(0 <= index && index < items.length)) { |
| error (SWT.ERROR_CANNOT_GET_ITEM); |
| } |
| return items [index]; |
| } |
| |
| /** |
| * Returns the number of items contained in the receiver's list. |
| * |
| * @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(); |
| if (glist == 0) return 0; |
| return OS.g_list_length (glist); |
| } |
| |
| /** |
| * Returns the height of the area which would be used to |
| * display <em>one</em> of the items in the receiver's list. |
| * |
| * @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(); |
| /* FIXME */ |
| return 0; |
| } |
| |
| /** |
| * Returns an array of <code>String</code>s which are the items |
| * in the receiver's list. |
| * <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</li> |
| * </ul> |
| */ |
| public String [] getItems () { |
| checkWidget(); |
| if (glist == 0) return new String [0]; |
| int count = OS.g_list_length (glist); |
| String [] items = new String [count]; |
| for (int i=0; i<count; i++) { |
| int data = OS.g_list_nth_data (glist, i); |
| int length = OS.strlen (data); |
| byte [] buffer1 = new byte [length]; |
| OS.memmove (buffer1, data, length); |
| char [] buffer2 = Converter.mbcsToWcs (null, buffer1); |
| items [i] = new String (buffer2, 0, length); |
| } |
| return items; |
| } |
| |
| /** |
| * Returns a <code>Point</code> whose x coordinate is the start |
| * of the selection in the receiver's text field, and whose y |
| * coordinate is the end of the selection. The returned values |
| * are zero-relative. An "empty" selection as indicated by |
| * the the x and y coordinates having the same value. |
| * |
| * @return a point representing the selection start and end |
| * |
| * @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 Point getSelection () { |
| checkWidget (); |
| GtkCombo combo = new GtkCombo (); |
| OS.memmove (combo, handle, GtkCombo.sizeof); |
| GtkEditable editable = new GtkEditable(); |
| OS.memmove (editable, combo.entry, GtkEditable.sizeof); |
| return new Point (editable.selection_start_pos, editable.selection_end_pos); |
| } |
| |
| /** |
| * Returns the zero-relative index of the item which is currently |
| * selected in the receiver's list, or -1 if no item is selected. |
| * |
| * @return the index of the selected item |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int getSelectionIndex () { |
| checkWidget(); |
| //NOT RIGHT FOR EDITABLE |
| return indexOf (getText ()); |
| } |
| |
| /** |
| * Returns a string containing a copy of the contents of the |
| * receiver's text field. |
| * |
| * @return the receiver's text |
| * |
| * @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 String getText () { |
| checkWidget(); |
| GtkCombo combo = new GtkCombo (); |
| OS.memmove (combo, handle, GtkCombo.sizeof); |
| int address = OS.gtk_entry_get_text (combo.entry); |
| int length = OS.strlen (address); |
| byte [] buffer1 = new byte [length]; |
| OS.memmove (buffer1, address, length); |
| /* |
| * This code is intentionally commented. |
| * The GTK documentation explicitly states |
| * that this address should not be freed. |
| */ |
| // OS.g_free (address); |
| char [] buffer2 = Converter.mbcsToWcs (null, buffer1); |
| return new String (buffer2, 0, buffer2.length); |
| } |
| |
| String getText (int start, int stop) { |
| /* |
| * NOTE: The current implementation uses substring () |
| * which can reference a potentially large character |
| * array. |
| */ |
| return getText ().substring (start, stop - 1); |
| } |
| |
| /** |
| * Returns the height of the receivers's text field. |
| * |
| * @return the text height |
| * |
| * @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 getTextHeight () { |
| checkWidget(); |
| /* A native approach, just measuring the entry: |
| * return UtilFuncs.getSize(_entryHandle).y; |
| * does not work - the entry is the same size as |
| * the whole combo. |
| */ |
| error (SWT.ERROR_CANNOT_GET_ITEM_HEIGHT); |
| return 0; |
| } |
| |
| /** |
| * Returns the maximum number of characters that the receiver's |
| * text field is capable of holding. If this has not been changed |
| * by <code>setTextLimit()</code>, it will be the constant |
| * <code>Combo.LIMIT</code>. |
| * |
| * @return the text limit |
| * |
| * @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 getTextLimit () { |
| checkWidget(); |
| return textLimit; |
| } |
| |
| /** |
| * Searches the receiver's list starting at the first item |
| * (index 0) until an item is found that is equal to the |
| * argument, and returns the index of that item. If no item |
| * is found, returns -1. |
| * |
| * @param 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(); |
| return indexOf (string, 0); |
| } |
| |
| /** |
| * 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> |
| */ |
| public int indexOf (String string, int start) { |
| checkWidget(); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| String [] items = getItems (); |
| for (int i=start; i<items.length; i++) { |
| if (string.equals(items [i])) return i; |
| } |
| return -1; |
| } |
| |
| int processModify (int arg0, int arg1, int int2) { |
| sendEvent (SWT.Modify); |
| return 0; |
| } |
| |
| int processSelection (int int0, int int1, int int2) { |
| postEvent (SWT.Selection); |
| return 0; |
| } |
| |
| void register () { |
| super.register (); |
| WidgetTable.put (padHandle, this); |
| GtkCombo combo = new GtkCombo (); |
| OS.memmove (combo, handle, GtkCombo.sizeof); |
| WidgetTable.put (combo.entry, this); |
| WidgetTable.put (combo.list, this); |
| WidgetTable.put (combo.button, this); |
| } |
| |
| void releaseHandle () { |
| super.releaseHandle (); |
| int padHandle = 0; |
| } |
| |
| void releaseWidget () { |
| if (glist != 0) { |
| int count = OS.g_list_length (glist); |
| for (int i=0; i<count; i++) { |
| int data = OS.g_list_nth_data (glist, i); |
| if (data != 0) OS.g_free (data); |
| } |
| OS.g_list_free (glist); |
| } |
| glist = 0; |
| super.releaseWidget (); |
| } |
| |
| /** |
| * Removes the item from the receiver's list 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(); |
| if (!(0 <= index && index < getItemCount ())) { |
| error (SWT.ERROR_ITEM_NOT_REMOVED); |
| } |
| String [] oldItems = getItems (); |
| String [] newItems = new String [oldItems.length - 1]; |
| System.arraycopy (oldItems, 0, newItems, 0, index); |
| System.arraycopy (oldItems, index + 1, newItems, index, oldItems.length - index - 1); |
| setItems (newItems); |
| } |
| |
| /** |
| * Removes the items from the receiver's list 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(); |
| if (!(0 <= start && start <= end && end < getItemCount ())) { |
| error (SWT.ERROR_ITEM_NOT_REMOVED); |
| } |
| String [] oldItems = getItems (); |
| String [] newItems = new String [oldItems.length - (end - start + 1)]; |
| System.arraycopy (oldItems, 0, newItems, 0, start); |
| System.arraycopy (oldItems, end + 1, newItems, start, oldItems.length - end - 1); |
| setItems (newItems); |
| } |
| |
| /** |
| * 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) remove (index); |
| } |
| |
| /** |
| * Removes all of the items from the receiver's list. |
| * <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(); |
| setItems (new String [0]); |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the receiver's text is modified. |
| * |
| * @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 ModifyListener |
| * @see #addModifyListener |
| */ |
| public void removeModifyListener (ModifyListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Modify, listener); |
| } |
| |
| /** |
| * 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 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(); |
| String [] items = getItems (); |
| if (index >= items.length) return; |
| String selectedText = items [index]; |
| GtkCombo combo = new GtkCombo (); |
| OS.memmove (combo, handle, GtkCombo.sizeof); |
| OS.gtk_signal_handler_block_by_data (combo.entry, SWT.Modify); |
| OS.gtk_signal_handler_block_by_data (combo.list, SWT.Selection); |
| OS.gtk_list_select_item (combo.list, index); |
| OS.gtk_entry_set_text (combo.entry, Converter.wcsToMbcs (null, selectedText, true)); |
| OS.gtk_signal_handler_unblock_by_data (combo.entry, SWT.Modify); |
| OS.gtk_signal_handler_unblock_by_data (combo.list, SWT.Selection); |
| } |
| |
| /** |
| * 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); |
| if (!(0 <= index && index <= getItemCount ())) { |
| error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| String [] items = getItems (); |
| items [index] = string; |
| setItems (items); |
| } |
| |
| /** |
| * Sets the receiver's list 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); |
| GtkCombo combo = new GtkCombo (); |
| OS.memmove (combo, handle, GtkCombo.sizeof); |
| if (items.length == 0) { |
| OS.gtk_list_clear_items (combo.list, 0, -1); |
| //LEAK |
| glist = 0; |
| } else { |
| int new_glist = 0; |
| for (int i=0; i<items.length; i++) { |
| String string = items [i]; |
| // FIXME leaked strings and glist |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| byte [] buffer = Converter.wcsToMbcs (null, string, true); |
| int data = OS.g_malloc (buffer.length); |
| OS.memmove (data, buffer, buffer.length); |
| new_glist = OS.g_list_append (new_glist, data); |
| } |
| OS.gtk_signal_handler_block_by_data (combo.entry, SWT.Modify); |
| OS.gtk_signal_handler_block_by_data (combo.list, SWT.Selection); |
| OS.gtk_combo_set_popdown_strings (handle, new_glist); |
| OS.gtk_signal_handler_unblock_by_data (combo.entry, SWT.Modify); |
| OS.gtk_signal_handler_unblock_by_data (combo.list, SWT.Selection); |
| if (glist != 0) { |
| int count = OS.g_list_length (glist); |
| for (int i=0; i<count; i++) { |
| int data = OS.g_list_nth_data (glist, i); |
| if (data != 0) OS.g_free (data); |
| } |
| OS.g_list_free (glist); |
| } |
| glist = new_glist; |
| } |
| OS.gtk_signal_handler_block_by_data (combo.entry, SWT.Modify); |
| OS.gtk_editable_delete_text (combo.entry, 0, -1); |
| OS.gtk_signal_handler_unblock_by_data (combo.entry, SWT.Modify); |
| } |
| |
| /** |
| * Sets the selection in the receiver's text field to the |
| * range specified by the argument whose x coordinate is the |
| * start of the selection and whose y coordinate is the end |
| * of the selection. |
| * |
| * @param a point representing the new selection start and end |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the point is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void setSelection (Point selection) { |
| checkWidget(); |
| if (selection == null) error (SWT.ERROR_NULL_ARGUMENT); |
| GtkCombo gtkCombo = new GtkCombo (); |
| OS.memmove (gtkCombo, handle, GtkCombo.sizeof); |
| int entry = gtkCombo.entry; |
| OS.gtk_editable_set_position (entry, selection.x); |
| OS.gtk_editable_select_region (entry, selection.x, selection.y); |
| } |
| |
| protected boolean setTabGroupFocus () { |
| return setFocus (); |
| } |
| |
| /** |
| * Sets the contents of the receiver's text field to the |
| * given string. |
| * <p> |
| * Note: The text field in a <code>Combo</code> is typically |
| * only capable of displaying a single line of text. Thus, |
| * setting the text to a string containing line breaks or |
| * other special characters will probably cause it to |
| * display incorrectly. |
| * </p> |
| * |
| * @param text the new text |
| * |
| * @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 void setText (String string) { |
| checkWidget(); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| GtkCombo gtkCombo = new GtkCombo (); |
| OS.memmove (gtkCombo, handle, GtkCombo.sizeof); |
| int entry = gtkCombo.entry; |
| OS.gtk_editable_delete_text (entry, 0, -1); |
| int [] position = new int [1]; |
| byte [] buffer = Converter.wcsToMbcs (null, string); |
| OS.gtk_editable_insert_text (entry, buffer, buffer.length, position); |
| OS.gtk_editable_set_position (entry, 0); |
| } |
| |
| /** |
| * Sets the maximum number of characters that the receiver's |
| * text field is capable of holding to be the argument. |
| * |
| * @param limit new text limit |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_CANNOT_BE_ZERO - if the limit is zero</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 setTextLimit (int limit) { |
| checkWidget(); |
| if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO); |
| this.textLimit = (short) limit; |
| GtkCombo combo = new GtkCombo (); |
| OS.memmove (combo, handle, GtkCombo.sizeof); |
| OS.gtk_entry_set_max_length (combo.entry, (short) limit); |
| } |
| |
| } |