| package org.eclipse.swt.widgets; |
| |
| /* |
| * Copyright (c) 2000, 2002 IBM Corp. All rights reserved. |
| * This file is made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| */ |
| |
| 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>
|
| * Note: Only one of the styles DROP_DOWN and SIMPLE
|
| * may be specified.
|
| * </p><p>
|
| * IMPORTANT: This class is <em>not</em> intended to be subclassed.
|
| * </p>
|
| *
|
| * @see List
|
| */ |
| public class Combo extends Composite { |
| int entryHandle, listHandle; |
| String [] items = new String [0]; |
| /**
|
| * the operating system limit for the number of characters
|
| * that the text field in an instance of this class can hold
|
| */ |
| 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
|
| * lists the style constants that are applicable to the class.
|
| * Style bits are also inherited from superclasses.
|
| * </p>
|
| *
|
| * @param parent a composite control which will be the parent of the new instance (cannot be null)
|
| * @param style the style of control to construct
|
| *
|
| * @exception IllegalArgumentException <ul>
|
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
|
| * </ul>
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
|
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
|
| * </ul>
|
| *
|
| * @see SWT#DROP_DOWN
|
| * @see SWT#READ_ONLY
|
| * @see SWT#SIMPLE
|
| * @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 [] newItems = new String [items.length + 1]; |
| System.arraycopy (items, 0, newItems, 0, items.length); |
| newItems [items.length] = string; |
| setItems (newItems, true, true); |
| } |
| |
| /**
|
| * 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 <= items.length)) { |
| error (SWT.ERROR_INVALID_RANGE); |
| } |
| String [] newItems = new String [items.length + 1]; |
| System.arraycopy (items, 0, newItems, 0, index); |
| newItems [index] = string; |
| System.arraycopy (items, index, newItems, index + 1, items.length - index); |
| setItems (newItems, true, true); |
| } |
| |
| /**
|
| * 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(); |
| OS.gtk_editable_delete_selection (handle); |
| } |
| |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| int width = OS.GTK_WIDGET_WIDTH (fixedHandle); |
| int height = OS.GTK_WIDGET_HEIGHT (fixedHandle); |
| OS.gtk_widget_set_size_request (handle, wHint, hHint); |
| GtkRequisition requisition = new GtkRequisition (); |
| OS.gtk_widget_size_request (handle, requisition); |
| GtkRequisition entryRequesition = new GtkRequisition (); |
| OS.gtk_widget_size_request (entryHandle, entryRequesition); |
| GtkRequisition listRequesition = new GtkRequisition (); |
| int listParent = OS.gtk_widget_get_parent (listHandle); |
| OS.gtk_widget_size_request (listParent != 0 ? listParent : listHandle, listRequesition); |
| OS.gtk_widget_set_size_request (handle, width, height); |
| width = (requisition.width - entryRequesition.width) + listRequesition.width + 2; |
| width = wHint == SWT.DEFAULT ? width : wHint; |
| height = hHint == SWT.DEFAULT ? requisition.height : hHint; |
| return new Point (width, height); |
| } |
| |
| /** |
| * Copies the selected text. |
| * <p> |
| * The current selection is copied to the clipboard. |
| * </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> |
| * |
| * @since 2.1 |
| */ |
| public void copy () { |
| checkWidget (); |
| OS.gtk_editable_copy_clipboard (entryHandle); |
| } |
| |
| void createHandle (int index) { |
| state |= HANDLE; |
| fixedHandle = OS.gtk_fixed_new (); |
| if (fixedHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| OS.gtk_fixed_set_has_window (fixedHandle, true); |
| handle = OS.gtk_combo_new (); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| int parentHandle = parent.parentingHandle (); |
| OS.gtk_container_add (parentHandle, fixedHandle); |
| OS.gtk_container_add (fixedHandle, handle); |
| OS.gtk_widget_show (fixedHandle); |
| OS.gtk_widget_show (handle); |
| GtkCombo combo = new GtkCombo (); |
| OS.memmove (combo, handle); |
| entryHandle = combo.entry; |
| listHandle = combo.list; |
| boolean editable = (style & SWT.READ_ONLY) == 0; |
| OS.gtk_editable_set_editable (entryHandle, editable); |
| OS.gtk_entry_set_activates_default (entryHandle, true); |
| OS.gtk_combo_disable_activate (handle); |
| OS.gtk_combo_set_case_sensitive (handle, true); |
| } |
| |
| /** |
| * Cuts the selected text. |
| * <p> |
| * The current selection is first copied to the |
| * clipboard and then deleted from the widget. |
| * </p> |
| * |
| * @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> |
| * |
| * @since 2.1 |
| */ |
| public void cut () { |
| checkWidget (); |
| OS.gtk_editable_cut_clipboard (entryHandle); |
| } |
| |
| GdkColor defaultBackground () { |
| Display display = getDisplay (); |
| return display.COLOR_TEXT_BACKGROUND; |
| } |
| |
| GdkColor defaultForeground () { |
| Display display = getDisplay (); |
| return display.COLOR_TEXT_FOREGROUND; |
| } |
| |
| void deregister () { |
| super.deregister (); |
| WidgetTable.remove (entryHandle); |
| WidgetTable.remove (listHandle); |
| } |
| |
| int fontHandle () { |
| if (entryHandle != 0) return entryHandle; |
| return super.fontHandle (); |
| } |
| |
| public boolean forceFocus () { |
| checkWidget(); |
| OS.gtk_widget_grab_focus (entryHandle); |
| return hasFocus (); |
| } |
| |
| boolean hasFocus () { |
| if (super.hasFocus ()) return true; |
| if (OS.GTK_WIDGET_HAS_FOCUS (entryHandle)) return true; |
| if (OS.GTK_WIDGET_HAS_FOCUS (listHandle)) return true; |
| return false; |
| } |
| |
| void hookEvents () { |
| super.hookEvents (); |
| Display display = getDisplay (); |
| int windowProc2 = display.windowProc2; |
| int windowProc3 = display.windowProc3; |
| // TO DO - fix multiple selection events for one user action |
| OS.g_signal_connect (listHandle, OS.select_child, windowProc3, SELECT_CHILD); |
| OS.g_signal_connect_after (entryHandle, OS.changed, windowProc2, CHANGED); |
| OS.g_signal_connect (entryHandle, OS.activate, windowProc2, ACTIVATE); |
| 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; |
| //FIXME - missing button handle |
| int [] handles = new int [] {entryHandle, listHandle, /*combo.button*/}; |
| for (int i=0; i<handles.length; i++) { |
| int handle = handles [i]; |
| OS.gtk_widget_add_events (handle, mask); |
| OS.g_signal_connect (handle, OS.button_press_event, windowProc3, BUTTON_PRESS_EVENT); |
| OS.g_signal_connect (handle, OS.button_release_event, windowProc3, BUTTON_RELEASE_EVENT); |
| OS.g_signal_connect (handle, OS.motion_notify_event, windowProc3, MOTION_NOTIFY_EVENT); |
| OS.g_signal_connect (handle, OS.key_press_event, windowProc3, KEY_PRESS_EVENT); |
| OS.g_signal_connect (handle, OS.key_release_event, windowProc3, KEY_RELEASE_EVENT); |
| |
| /* |
| * Feature in GTK. Events such as mouse move are propagate up |
| * the widget hierarchy and are seen by the parent. This is the |
| * correct GTK behavior but not correct for SWT. The fix is to |
| * hook a signal after and stop the propagation using a negative |
| * event number to distinguish this case. |
| */ |
| OS.g_signal_connect_after (handle, OS.button_press_event, windowProc3, -BUTTON_PRESS_EVENT); |
| OS.g_signal_connect_after (handle, OS.button_release_event, windowProc3, -BUTTON_RELEASE_EVENT); |
| OS.g_signal_connect_after (handle, OS.motion_notify_event, windowProc3, -MOTION_NOTIFY_EVENT); |
| } |
| } |
| |
| /**
|
| * 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 (items, true, getSelectionIndex () != index); |
| } |
| |
| /**
|
| * 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 (items, true, false); |
| } |
| |
| GdkColor getBackgroundColor () { |
| return getBaseColor (); |
| } |
| |
| GdkColor getForegroundColor () { |
| return getTextColor (); |
| } |
| |
| /**
|
| * 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(); |
| if (!(0 <= index && index < items.length)) { |
| error (SWT.ERROR_INVALID_RANGE); |
| } |
| 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(); |
| return items.length; |
| } |
| |
| /**
|
| * 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(); |
| return fontHeight (getFontDescription (), listHandle != 0 ? listHandle : handle); |
| } |
| |
| /**
|
| * 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(); |
| String [] result = new String [items.length]; |
| System.arraycopy (items, 0, result, 0, items.length); |
| return result; |
| } |
| |
| /**
|
| * 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 (); |
| int [] start = new int [1]; |
| int [] end = new int [1]; |
| OS.gtk_editable_get_selection_bounds (entryHandle, start, end); |
| return new Point(start [0], end [0]); |
| } |
| |
| /**
|
| * 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(); |
| int address = OS.gtk_entry_get_text (entryHandle); |
| int length = OS.strlen (address); |
| byte [] buffer = new byte [length]; |
| OS.memmove (buffer, address, length); |
| return new String (Converter.mbcsToWcs (null, buffer)); |
| } |
| |
| 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(); |
| return fontHeight (getFontDescription (), entryHandle != 0 ? entryHandle : handle) + 8; |
| } |
| |
| /**
|
| * 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(); |
| int limit = OS.gtk_entry_get_max_length (handle); |
| return limit == 0 ? LIMIT : limit; |
| } |
| |
| int gtk_activate (int widget) { |
| postEvent (SWT.DefaultSelection); |
| return 0; |
| } |
| |
| int gtk_changed (int widget) { |
| sendEvent (SWT.Modify); |
| return 0; |
| } |
| |
| int gtk_select_child (int list, int widget) { |
| postEvent (SWT.Selection); |
| return 0; |
| } |
| |
| /**
|
| * 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); |
| for (int i=start; i<items.length; i++) { |
| if (string.equals(items [i])) return i; |
| } |
| return -1; |
| } |
| |
| /** |
| * Pastes text from clipboard. |
| * <p> |
| * The selected text is deleted from the widget |
| * and new text inserted from the clipboard. |
| * </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> |
| * |
| * @since 2.1 |
| */ |
| public void paste () { |
| checkWidget (); |
| OS.gtk_editable_paste_clipboard (entryHandle); |
| } |
| |
| int parentingHandle() { |
| return fixedHandle; |
| } |
| |
| void register () { |
| super.register (); |
| WidgetTable.put (entryHandle, this); |
| WidgetTable.put (listHandle, this); |
| } |
| |
| void releaseHandle () { |
| super.releaseHandle (); |
| entryHandle = listHandle = 0; |
| } |
| |
| /**
|
| * 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 < items.length)) { |
| error (SWT.ERROR_INVALID_RANGE); |
| } |
| String [] oldItems = items; |
| 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, true, true); |
| } |
| |
| /**
|
| * 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 < items.length)) { |
| error (SWT.ERROR_INVALID_RANGE); |
| } |
| String [] oldItems = items; |
| 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, true, true); |
| } |
| |
| /**
|
| * Searches the receiver's list starting at the first item
|
| * until an item is found that is equal to the argument,
|
| * and removes that item from the list.
|
| *
|
| * @param string the item to remove
|
| *
|
| * @exception IllegalArgumentException <ul>
|
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li>
|
| * <li>ERROR_INVALID_ARGUMENT - if the string is not found in the list</li>
|
| * </ul>
|
| * @exception SWTException <ul>
|
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| * @exception SWTError <ul>
|
| * <li>ERROR_ITEM_NOT_REMOVED - if the operation fails because of an operating system failure</li>
|
| * </ul>
|
| */ |
| public void remove (String string) { |
| checkWidget(); |
| int index = indexOf (string, 0); |
| if (index == -1) error (SWT.ERROR_INVALID_ARGUMENT); |
| 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], false, false); |
| } |
| |
| /**
|
| * 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(); |
| if (index < 0 || index >= items.length) return; |
| setText (items [index]); |
| } |
| |
| void setBackgroundColor (GdkColor color) { |
| super.setBackgroundColor (color); |
| if (entryHandle != 0) OS.gtk_widget_modify_base (entryHandle, 0, color); |
| if (listHandle != 0) OS.gtk_widget_modify_base (listHandle, 0, color); |
| } |
| |
| boolean setBounds (int x, int y, int width, int height, boolean move, boolean resize) { |
| int newHeight = (resize && (style & SWT.DROP_DOWN) != 0) ? getTextHeight () : height; |
| return super.setBounds (x, y, width, newHeight, move, resize); |
| } |
| |
| void setFontDescription (int font) { |
| super.setFontDescription (font); |
| if (entryHandle != 0) OS.gtk_widget_modify_font (entryHandle, font); |
| if (listHandle != 0) OS.gtk_widget_modify_font (listHandle, font); |
| } |
| |
| void setForegroundColor (GdkColor color) { |
| super.setForegroundColor (color); |
| if (entryHandle != 0) OS.gtk_widget_modify_text (entryHandle, 0, color); |
| if (listHandle != 0) OS.gtk_widget_modify_text (listHandle, 0, color); |
| } |
| |
| /**
|
| * 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 <= items.length)) { |
| error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| items [index] = string; |
| setItems (items, true, true); |
| } |
| |
| /**
|
| * 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); |
| setItems (items, false, false); |
| } |
| |
| void setItems (String [] items, boolean keepText, boolean keepSelection) { |
| this.items = items; |
| int selectedIndex = -1; |
| if (keepSelection) selectedIndex = getSelectionIndex (); |
| if (items.length == 0) { |
| int itemsList = OS.gtk_container_get_children (listHandle); |
| if (itemsList != 0) { |
| int count = OS.g_list_length (itemsList); |
| for (int i=count - 1; i>=0; i--) { |
| int widget = OS.g_list_nth_data (itemsList, i); |
| OS.gtk_container_remove (listHandle, widget); |
| } |
| OS.g_list_free (itemsList); |
| } |
| } else { |
| int glist = 0; |
| for (int i=0; i<items.length; i++) { |
| String string = items [i]; |
| if (string == null) break; |
| byte [] buffer = Converter.wcsToMbcs (null, string, true); |
| int data = OS.g_malloc (buffer.length); |
| OS.memmove (data, buffer, buffer.length); |
| glist = OS.g_list_append (glist, data); |
| } |
| OS.g_signal_handlers_block_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); |
| OS.g_signal_handlers_block_matched (listHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SELECT_CHILD); |
| OS.gtk_combo_set_popdown_strings (handle, glist); |
| OS.g_signal_handlers_unblock_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); |
| OS.g_signal_handlers_unblock_matched (listHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SELECT_CHILD); |
| 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); |
| } |
| } |
| if (keepSelection) select (selectedIndex); |
| if (!keepText) OS.gtk_editable_delete_text (entryHandle, 0, -1); |
| } |
| |
| /**
|
| * 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); |
| OS.gtk_editable_set_position (entryHandle, selection.x); |
| OS.gtk_editable_select_region (entryHandle, selection.x, selection.y); |
| } |
| |
| /**
|
| * 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); |
| byte [] buffer = Converter.wcsToMbcs (null, string, true); |
| OS.g_signal_handlers_block_matched (listHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SELECT_CHILD); |
| OS.gtk_entry_set_text (entryHandle, buffer); |
| OS.g_signal_handlers_unblock_matched (listHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SELECT_CHILD); |
| } |
| |
| /**
|
| * 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); |
| OS.gtk_entry_set_max_length (entryHandle, limit); |
| } |
| |
| } |