/******************************************************************************* * Copyright (c) 2000, 2013 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.swt.widgets; import org.eclipse.swt.*; 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 selectable user interface * objects that allow the user to enter and modify numeric * values. *

* Note that although this class is a subclass of Composite, * it does not make sense to add children to it, or set a layout on it. *

*

*
Styles:
*
READ_ONLY, WRAP
*
Events:
*
Selection, Modify, Verify
*
*

* IMPORTANT: This class is not intended to be subclassed. *

* * @see Spinner snippets * @see SWT Example: ControlExample * @see Sample code and further information * * @since 3.1 * @noextend This class is not intended to be subclassed by clients. */ public class Spinner extends Composite { static final int MIN_ARROW_WIDTH = 6; int lastEventTime = 0; long /*int*/ imContext; long /*int*/ gdkEventKey = 0; int fixStart = -1, fixEnd = -1; double climbRate = 1; /** * the operating system limit for the number of characters * that the text field in an instance of this class can hold * * @since 3.4 */ 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 = 0x7FFFFFFF; } /** * Constructs a new instance of this class given its parent * and a style value describing its behavior and appearance. *

* The style value is either one of the style constants defined in * class SWT which is applicable to instances of this * class, or must be built by bitwise OR'ing together * (that is, using the int "|" operator) two or more * of those SWT style constants. The class description * lists the style constants that are applicable to the class. * Style bits are also inherited from superclasses. *

* * @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 * @exception SWTException * * @see SWT#READ_ONLY * @see SWT#WRAP * @see Widget#checkSubclass * @see Widget#getStyle */ public Spinner (Composite parent, int style) { super (parent, checkStyle (style)); } /** * 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 ModifyListener * interface. * * @param listener the listener which should be notified * * @exception IllegalArgumentException * @exception SWTException * * @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 control is selected by the user, by sending * it one of the messages defined in the SelectionListener * interface. *

* widgetSelected is not called for texts. * widgetDefaultSelected is typically called when ENTER is pressed in a single-line text. *

* * @param listener the listener which should be notified when the control is selected by the user * * @exception IllegalArgumentException * @exception SWTException * * @see SelectionListener * @see #removeSelectionListener * @see SelectionEvent */ public void addSelectionListener(SelectionListener listener) { checkWidget (); if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener(listener); addListener(SWT.Selection,typedListener); addListener(SWT.DefaultSelection,typedListener); } /** * Adds the listener to the collection of listeners who will * be notified when the receiver's text is verified, by sending * it one of the messages defined in the VerifyListener * interface. * * @param listener the listener which should be notified * * @exception IllegalArgumentException * @exception SWTException * * @see VerifyListener * @see #removeVerifyListener */ void addVerifyListener (VerifyListener listener) { checkWidget(); if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener (listener); addListener (SWT.Verify, typedListener); } static int checkStyle (int style) { /* * Even though it is legal to create this widget * with scroll bars, they serve no useful purpose * because they do not automatically scroll the * widget's client area. The fix is to clear * the SWT style. */ return style & ~(SWT.H_SCROLL | SWT.V_SCROLL); } protected void checkSubclass () { if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS); } public Point computeSize (int wHint, int hHint, boolean changed) { checkWidget (); if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0; if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0; int[] w = new int [1], h = new int [1]; OS.gtk_widget_realize (handle); long /*int*/ layout = OS.gtk_entry_get_layout (handle); long /*int*/ hAdjustment = OS.gtk_spin_button_get_adjustment (handle); double upper = gtk_adjustment_get_upper (hAdjustment); int digits = OS.gtk_spin_button_get_digits (handle); for (int i = 0; i < digits; i++) upper *= 10; String string = String.valueOf ((int) upper); if (digits > 0) { StringBuffer buffer = new StringBuffer (); buffer.append (string); buffer.append (getDecimalSeparator ()); int count = digits - string.length (); while (count >= 0) { buffer.append ("0"); count--; } string = buffer.toString (); } byte [] buffer1 = Converter.wcsToMbcs (null, string, false); long /*int*/ ptr = OS.pango_layout_get_text (layout); int length = OS.strlen (ptr); byte [] buffer2 = new byte [length]; OS.memmove (buffer2, ptr, length); OS.pango_layout_set_text (layout, buffer1, buffer1.length); OS.pango_layout_set_text (layout, buffer2, buffer2.length); int width, height = 0 ; OS.gtk_widget_realize (handle); if (OS.GTK3) { OS.gtk_widget_set_size_request (handle, wHint, hHint); GtkRequisition requisition = new GtkRequisition (); OS.gtk_widget_get_preferred_size (handle, requisition, null); width = wHint == SWT.DEFAULT ? requisition.width : wHint; height = hHint == SWT.DEFAULT ? requisition.height : hHint; } else { OS.pango_layout_get_pixel_size (layout, w, h); width = wHint == SWT.DEFAULT ? w [0] : wHint; height = hHint == SWT.DEFAULT ? h [0] : hHint; } Rectangle trim = computeTrim (0, 0, width, height); return new Point (trim.width, trim.height); } public Rectangle computeTrim (int x, int y, int width, int height) { checkWidget (); int xborder = 0, yborder = 0; Rectangle trim = super.computeTrim (x, y, width, height); if (OS.GTK3) { GtkBorder tmp = new GtkBorder(); long /*int*/ context = OS.gtk_widget_get_style_context (handle); OS.gtk_style_context_get_padding (context, OS.GTK_STATE_FLAG_NORMAL, tmp); if ((style & SWT.BORDER) != 0) { OS.gtk_style_context_get_border (context, OS.GTK_STATE_FLAG_NORMAL, tmp); trim.x -= tmp.left; trim.y -= tmp.top; trim.width += tmp.left + tmp.right; trim.height += tmp.top + tmp.bottom; } }else { Point thickness = getThickness (handle); if ((this.style & SWT.BORDER) != 0) { xborder += thickness.x; yborder += thickness.y; } long /*int*/ fontDesc = getFontDescription (); int fontSize = OS.pango_font_description_get_size (fontDesc); int arrowSize = Math.max (OS.PANGO_PIXELS (fontSize), MIN_ARROW_WIDTH); arrowSize = arrowSize - arrowSize % 2; trim.width += arrowSize + (2 * thickness.x); } int [] property = new int [1]; OS.gtk_widget_style_get (handle, OS.interior_focus, property, 0); if (property [0] == 0) { OS.gtk_widget_style_get (handle, OS.focus_line_width, property, 0); xborder += property [0]; yborder += property [0]; } trim.x -= xborder; trim.y -= yborder; trim.width += 2 * xborder; trim.height += 2 * yborder; GtkBorder innerBorder = Display.getEntryInnerBorder (handle); trim.x -= innerBorder.left; trim.y -= innerBorder.top; trim.width += innerBorder.left + innerBorder.right; trim.height += innerBorder.top + innerBorder.bottom; return new Rectangle (trim.x, trim.y, trim.width, trim.height); } /** * Copies the selected text. *

* The current selection is copied to the clipboard. *

* * @exception SWTException */ public void copy () { checkWidget (); OS.gtk_editable_copy_clipboard (handle); } void createHandle (int index) { state |= HANDLE | MENU; fixedHandle = OS.g_object_new (display.gtk_fixed_get_type (), 0); if (fixedHandle == 0) error (SWT.ERROR_NO_HANDLES); gtk_widget_set_has_window (fixedHandle, true); long /*int*/ adjustment = OS.gtk_adjustment_new (0, 0, 100, 1, 10, 0); if (adjustment == 0) error (SWT.ERROR_NO_HANDLES); handle = OS.gtk_spin_button_new (adjustment, climbRate, 0); if (handle == 0) error (SWT.ERROR_NO_HANDLES); OS.gtk_container_add (fixedHandle, handle); OS.gtk_editable_set_editable (handle, (style & SWT.READ_ONLY) == 0); OS.gtk_entry_set_has_frame (handle, (style & SWT.BORDER) != 0); OS.gtk_spin_button_set_wrap (handle, (style & SWT.WRAP) != 0); if (OS.GTK3) { imContext = OS.imContextLast(); } } /** * Cuts the selected text. *

* The current selection is first copied to the * clipboard and then deleted from the widget. *

* * @exception SWTException */ public void cut () { checkWidget (); OS.gtk_editable_cut_clipboard (handle); } void deregister () { super.deregister (); long /*int*/ imContext = imContext (); if (imContext != 0) display.removeWidget (imContext); } long /*int*/ eventWindow () { return paintWindow (); } long /*int*/ enterExitHandle () { return fixedHandle; } boolean filterKey (int keyval, long /*int*/ event) { int time = OS.gdk_event_get_time (event); if (time != lastEventTime) { lastEventTime = time; long /*int*/ imContext = imContext (); if (imContext != 0) { return OS.gtk_im_context_filter_keypress (imContext, event); } } gdkEventKey = event; return false; } void fixIM () { /* * The IM filter has to be called one time for each key press event. * When the IM is open the key events are duplicated. The first event * is filtered by SWT and the second event is filtered by GTK. In some * cases the GTK handler does not run (the widget is destroyed, the * application code consumes the event, etc), for these cases the IM * filter has to be called by SWT. */ if (gdkEventKey != 0 && gdkEventKey != -1) { long /*int*/ imContext = imContext (); if (imContext != 0) { OS.gtk_im_context_filter_keypress (imContext, gdkEventKey); gdkEventKey = -1; return; } } gdkEventKey = 0; } GdkColor getBackgroundColor () { return getBaseColor (); } public int getBorderWidth () { checkWidget(); if ((this.style & SWT.BORDER) != 0) { return getThickness (handle).x; } return 0; } GdkColor getForegroundColor () { return getTextColor (); } /** * Returns the amount that the receiver's value will be * modified by when the up/down arrows are pressed. * * @return the increment * * @exception SWTException */ public int getIncrement () { checkWidget (); long /*int*/ hAdjustment = OS.gtk_spin_button_get_adjustment (handle); int digits = OS.gtk_spin_button_get_digits (handle); double value = gtk_adjustment_get_step_increment (hAdjustment); for (int i = 0; i < digits; i++) value *= 10; return (int) (value > 0 ? value + 0.5 : value - 0.5); } /** * Returns the maximum value which the receiver will allow. * * @return the maximum * * @exception SWTException */ public int getMaximum () { checkWidget (); long /*int*/ hAdjustment = OS.gtk_spin_button_get_adjustment (handle); int digits = OS.gtk_spin_button_get_digits (handle); double value = gtk_adjustment_get_upper (hAdjustment); for (int i = 0; i < digits; i++) value *= 10; return (int) (value > 0 ? value + 0.5 : value - 0.5); } /** * Returns the minimum value which the receiver will allow. * * @return the minimum * * @exception SWTException */ public int getMinimum () { checkWidget (); long /*int*/ hAdjustment = OS.gtk_spin_button_get_adjustment (handle); int digits = OS.gtk_spin_button_get_digits (handle); double value = gtk_adjustment_get_lower (hAdjustment); for (int i = 0; i < digits; i++) value *= 10; return (int) (value > 0 ? value + 0.5 : value - 0.5); } /** * Returns the amount that the receiver's position will be * modified by when the page up/down keys are pressed. * * @return the page increment * * @exception SWTException */ public int getPageIncrement () { checkWidget (); long /*int*/ hAdjustment = OS.gtk_spin_button_get_adjustment (handle); int digits = OS.gtk_spin_button_get_digits (handle); double value = gtk_adjustment_get_page_increment (hAdjustment); for (int i = 0; i < digits; i++) value *= 10; return (int) (value > 0 ? value + 0.5 : value - 0.5); } /** * Returns the selection, which is the receiver's position. * * @return the selection * * @exception SWTException */ public int getSelection () { checkWidget (); long /*int*/ hAdjustment = OS.gtk_spin_button_get_adjustment (handle); int digits = OS.gtk_spin_button_get_digits (handle); double value = gtk_adjustment_get_value(hAdjustment); for (int i = 0; i < digits; i++) value *= 10; return (int) (value > 0 ? value + 0.5 : value - 0.5); } /** * Returns a string containing a copy of the contents of the * receiver's text field, or an empty string if there are no * contents. * * @return the receiver's text * * @exception SWTException * * @since 3.4 */ public String getText () { checkWidget (); long /*int*/ str = OS.gtk_entry_get_text (handle); if (str == 0) return ""; int length = OS.strlen (str); byte [] buffer = new byte [length]; OS.memmove (buffer, str, length); return new String (Converter.mbcsToWcs (null, buffer)); } /** * Returns the maximum number of characters that the receiver's * text field is capable of holding. If this has not been changed * by setTextLimit(), it will be the constant * Spinner.LIMIT. * * @return the text limit * * @exception SWTException * * @see #LIMIT * * @since 3.4 */ public int getTextLimit () { checkWidget (); int limit = OS.gtk_entry_get_max_length (handle); return limit == 0 ? 0xFFFF : limit; } /** * Returns the number of decimal places used by the receiver. * * @return the digits * * @exception SWTException */ public int getDigits () { checkWidget (); return OS.gtk_spin_button_get_digits (handle); } String getDecimalSeparator () { long /*int*/ ptr = OS.localeconv_decimal_point (); int length = OS.strlen (ptr); byte [] buffer = new byte [length]; OS.memmove (buffer, ptr, length); return new String (Converter.mbcsToWcs (null, buffer)); } long /*int*/ gtk_activate (long /*int*/ widget) { sendSelectionEvent (SWT.DefaultSelection); return 0; } long /*int*/ gtk_changed (long /*int*/ widget) { long /*int*/ str = OS.gtk_entry_get_text (handle); int length = OS.strlen (str); if (length > 0) { long /*int*/ [] endptr = new long /*int*/ [1]; double value = OS.g_strtod (str, endptr); if (endptr [0] == str + length) { long /*int*/ hAdjustment = OS.gtk_spin_button_get_adjustment (handle); GtkAdjustment adjustment = new GtkAdjustment (); gtk_adjustment_get (hAdjustment, adjustment); if (value != adjustment.value && adjustment.lower <= value && value <= adjustment.upper) { OS.gtk_spin_button_update (handle); } } } /* * Feature in GTK. When the user types, GTK positions * the caret after sending the changed signal. This * means that application code that attempts to position * the caret during a changed signal will fail. The fix * is to post the modify event when the user is typing. */ boolean keyPress = false; long /*int*/ eventPtr = OS.gtk_get_current_event (); if (eventPtr != 0) { GdkEventKey gdkEvent = new GdkEventKey (); OS.memmove (gdkEvent, eventPtr, GdkEventKey.sizeof); switch (gdkEvent.type) { case OS.GDK_KEY_PRESS: keyPress = true; break; } OS.gdk_event_free (eventPtr); } if (keyPress) { postEvent (SWT.Modify); } else { sendEvent (SWT.Modify); } return 0; } long /*int*/ gtk_commit (long /*int*/ imContext, long /*int*/ text) { if (text == 0) return 0; if (!OS.gtk_editable_get_editable (handle)) return 0; int length = OS.strlen (text); if (length == 0) return 0; byte [] buffer = new byte [length]; OS.memmove (buffer, text, length); char [] chars = Converter.mbcsToWcs (null, buffer); char [] newChars = sendIMKeyEvent (SWT.KeyDown, null, chars); if (newChars == null) return 0; /* * Feature in GTK. For a GtkEntry, during the insert-text signal, * GTK allows the programmer to change only the caret location, * not the selection. If the programmer changes the selection, * the new selection is lost. The fix is to detect a selection * change and set it after the insert-text signal has completed. */ fixStart = fixEnd = -1; OS.g_signal_handlers_block_matched (imContext, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, COMMIT); int id = OS.g_signal_lookup (OS.commit, OS.gtk_im_context_get_type ()); int mask = OS.G_SIGNAL_MATCH_DATA | OS.G_SIGNAL_MATCH_ID; OS.g_signal_handlers_unblock_matched (imContext, mask, id, 0, 0, 0, handle); if (newChars == chars) { OS.g_signal_emit_by_name (imContext, OS.commit, text); } else { buffer = Converter.wcsToMbcs (null, newChars, true); OS.g_signal_emit_by_name (imContext, OS.commit, buffer); } OS.g_signal_handlers_unblock_matched (imContext, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, COMMIT); OS.g_signal_handlers_block_matched (imContext, mask, id, 0, 0, 0, handle); if (fixStart != -1 && fixEnd != -1) { OS.gtk_editable_set_position (handle, fixStart); OS.gtk_editable_select_region (handle, fixStart, fixEnd); } fixStart = fixEnd = -1; return 0; } long /*int*/ gtk_delete_text (long /*int*/ widget, long /*int*/ start_pos, long /*int*/ end_pos) { if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return 0; long /*int*/ ptr = OS.gtk_entry_get_text (handle); if (end_pos == -1) end_pos = OS.g_utf8_strlen (ptr, -1); int start = (int)/*64*/OS.g_utf8_offset_to_utf16_offset (ptr, start_pos); int end = (int)/*64*/OS.g_utf8_offset_to_utf16_offset (ptr, end_pos); String newText = verifyText ("", start, end); if (newText == null) { OS.g_signal_stop_emission_by_name (handle, OS.delete_text); } else { if (newText.length () > 0) { int [] pos = new int [1]; pos [0] = (int)/*64*/end_pos; byte [] buffer = Converter.wcsToMbcs (null, newText, false); OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); OS.gtk_editable_insert_text (handle, buffer, buffer.length, pos); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.gtk_editable_set_position (handle, pos [0]); } } return 0; } long /*int*/ gtk_event_after (long /*int*/ widget, long /*int*/ gdkEvent) { if (cursor != null) setCursor (cursor.handle); return super.gtk_event_after (widget, gdkEvent); } long /*int*/ gtk_focus_out_event (long /*int*/ widget, long /*int*/ event) { fixIM (); return super.gtk_focus_out_event (widget, event); } long /*int*/ gtk_insert_text (long /*int*/ widget, long /*int*/ new_text, long /*int*/ new_text_length, long /*int*/ position) { // if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return 0; if (new_text == 0 || new_text_length == 0) return 0; byte [] buffer = new byte [(int)/*64*/new_text_length]; OS.memmove (buffer, new_text, buffer.length); String oldText = new String (Converter.mbcsToWcs (null, buffer)); int [] pos = new int [1]; OS.memmove (pos, position, 4); long /*int*/ ptr = OS.gtk_entry_get_text (handle); if (pos [0] == -1) pos [0] = (int)/*64*/OS.g_utf8_strlen (ptr, -1); int start = (int)/*64*/OS.g_utf16_pointer_to_offset (ptr, pos [0]); String newText = verifyText (oldText, start, start); if (newText != oldText) { int [] newStart = new int [1], newEnd = new int [1]; OS.gtk_editable_get_selection_bounds (handle, newStart, newEnd); if (newText != null) { if (newStart [0] != newEnd [0]) { OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT); OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); OS.gtk_editable_delete_selection (handle); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); } byte [] buffer3 = Converter.wcsToMbcs (null, newText, false); OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); OS.gtk_editable_insert_text (handle, buffer3, buffer3.length, pos); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); newStart [0] = newEnd [0] = pos [0]; } pos [0] = newEnd [0]; if (newStart [0] != newEnd [0]) { fixStart = newStart [0]; fixEnd = newEnd [0]; } OS.memmove (position, pos, 4); OS.g_signal_stop_emission_by_name (handle, OS.insert_text); } return 0; } long /*int*/ gtk_key_press_event (long /*int*/ widget, long /*int*/ event) { long /*int*/ result = super.gtk_key_press_event (widget, event); if (result != 0) fixIM (); if (gdkEventKey == -1) result = 1; gdkEventKey = 0; return result; } long /*int*/ gtk_populate_popup (long /*int*/ widget, long /*int*/ menu) { if ((style & SWT.RIGHT_TO_LEFT) != 0) { OS.gtk_widget_set_direction (menu, OS.GTK_TEXT_DIR_RTL); OS.gtk_container_forall (menu, display.setDirectionProc, OS.GTK_TEXT_DIR_RTL); } return 0; } long /*int*/ gtk_value_changed (long /*int*/ widget) { sendSelectionEvent (SWT.Selection); return 0; } void hookEvents () { super.hookEvents(); OS.g_signal_connect_closure (handle, OS.changed, display.closures [CHANGED], true); OS.g_signal_connect_closure (handle, OS.insert_text, display.closures [INSERT_TEXT], false); OS.g_signal_connect_closure (handle, OS.delete_text, display.closures [DELETE_TEXT], false); OS.g_signal_connect_closure (handle, OS.value_changed, display.closures [VALUE_CHANGED], false); OS.g_signal_connect_closure (handle, OS.activate, display.closures [ACTIVATE], false); OS.g_signal_connect_closure (handle, OS.populate_popup, display.closures [POPULATE_POPUP], false); long /*int*/ imContext = imContext (); if (imContext != 0) { OS.g_signal_connect_closure (imContext, OS.commit, display.closures [COMMIT], false); int id = OS.g_signal_lookup (OS.commit, OS.gtk_im_context_get_type ()); int mask = OS.G_SIGNAL_MATCH_DATA | OS.G_SIGNAL_MATCH_ID; OS.g_signal_handlers_block_matched (imContext, mask, id, 0, 0, 0, handle); } } long /*int*/ imContext () { if (imContext != 0) return imContext; return OS.GTK_ENTRY_IM_CONTEXT (handle); } long /*int*/ paintWindow () { long /*int*/ window = super.paintWindow (); long /*int*/ children = OS.gdk_window_get_children (window); if (children != 0) window = OS.g_list_data (children); OS.g_list_free (children); return window; } /** * Pastes text from clipboard. *

* The selected text is deleted from the widget * and new text inserted from the clipboard. *

* * @exception SWTException */ public void paste () { checkWidget (); OS.gtk_editable_paste_clipboard (handle); } void register () { super.register (); long /*int*/ imContext = imContext (); if (imContext != 0) display.addWidget (imContext, this); } void releaseWidget () { super.releaseWidget (); fixIM (); } /** * 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 * @exception SWTException * * @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 control is selected by the user. * * @param listener the listener which should no longer be notified * * @exception IllegalArgumentException * @exception SWTException * * @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); } /** * Removes the listener from the collection of listeners who will * be notified when the control is verified. * * @param listener the listener which should be notified * * @exception IllegalArgumentException * @exception SWTException * * @see VerifyListener * @see #addVerifyListener */ void removeVerifyListener (VerifyListener listener) { checkWidget (); if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); if (eventTable == null) return; eventTable.unhook (SWT.Verify, listener); } void setBackgroundColor (long /*int*/ context, long /*int*/ handle, GdkRGBA rgba) { setBackgroundColorGradient (context, handle, rgba); } void setBackgroundColor (GdkColor color) { super.setBackgroundColor (color); if (!OS.GTK3) { OS.gtk_widget_modify_base (handle, 0, color); } } void setCursor (long /*int*/ cursor) { long /*int*/ defaultCursor = 0; if (cursor == 0) defaultCursor = OS.gdk_cursor_new (OS.GDK_XTERM); super.setCursor (cursor != 0 ? cursor : defaultCursor); if (cursor == 0) gdk_cursor_unref (defaultCursor); } void setFontDescription (long /*int*/ font) { super.setFontDescription (font); } void setForegroundColor (GdkColor color) { setForegroundColor (handle, color, false); } /** * Sets the amount that the receiver's value will be * modified by when the up/down arrows are pressed to * the argument, which must be at least one. * * @param value the new increment (must be greater than zero) * * @exception SWTException */ public void setIncrement (int value) { checkWidget (); if (value < 1) return; long /*int*/ hAdjustment = OS.gtk_spin_button_get_adjustment (handle); double page_increment = gtk_adjustment_get_page_increment (hAdjustment); double newValue = value; int digits = OS.gtk_spin_button_get_digits (handle); for (int i = 0; i < digits; i++) newValue /= 10; OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); OS.gtk_spin_button_set_increments (handle, newValue, page_increment); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); } /** * Sets the maximum value that the receiver will allow. This new * value will be ignored if it is less than the receiver's current * minimum value. If the new maximum is applied then the receiver's * selection value will be adjusted if necessary to fall within its new range. * * @param value the new maximum, which must be greater than or equal to the current minimum * * @exception SWTException */ public void setMaximum (int value) { checkWidget (); long /*int*/ hAdjustment = OS.gtk_spin_button_get_adjustment (handle); double lower = gtk_adjustment_get_lower (hAdjustment); double newValue = value; int digits = OS.gtk_spin_button_get_digits (handle); for (int i = 0; i < digits; i++) newValue /= 10; if (newValue < lower) return; OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); OS.gtk_spin_button_set_range (handle, lower, newValue); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); } /** * Sets the minimum value that the receiver will allow. This new * value will be ignored if it is greater than the receiver's * current maximum value. If the new minimum is applied then the receiver's * selection value will be adjusted if necessary to fall within its new range. * * @param value the new minimum, which must be less than or equal to the current maximum * * @exception SWTException */ public void setMinimum (int value) { checkWidget (); long /*int*/ hAdjustment = OS.gtk_spin_button_get_adjustment (handle); double upper = gtk_adjustment_get_upper (hAdjustment); double newValue = value; int digits = OS.gtk_spin_button_get_digits (handle); for (int i = 0; i < digits; i++) newValue /= 10; if (newValue > upper) return; OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); OS.gtk_spin_button_set_range (handle, newValue, upper); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); } /** * Sets the amount that the receiver's position will be * modified by when the page up/down keys are pressed * to the argument, which must be at least one. * * @param value the page increment (must be greater than zero) * * @exception SWTException */ public void setPageIncrement (int value) { checkWidget (); if (value < 1) return; long /*int*/ hAdjustment = OS.gtk_spin_button_get_adjustment (handle); double step_increment = gtk_adjustment_get_step_increment(hAdjustment); double newValue = value; int digits = OS.gtk_spin_button_get_digits (handle); for (int i = 0; i < digits; i++) newValue /= 10; OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); OS.gtk_spin_button_set_increments (handle, step_increment, newValue); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); } /** * Sets the selection, which is the receiver's * position, to the argument. If the argument is not within * the range specified by minimum and maximum, it will be * adjusted to fall within this range. * * @param value the new selection (must be zero or greater) * * @exception SWTException */ public void setSelection (int value) { checkWidget (); double newValue = value; int digits = OS.gtk_spin_button_get_digits (handle); for (int i = 0; i < digits; i++) newValue /= 10; OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); OS.gtk_spin_button_set_value (handle, newValue); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); } /** * Sets the maximum number of characters that the receiver's * text field is capable of holding to be the argument. *

* To reset this value to the default, use setTextLimit(Spinner.LIMIT). * Specifying a limit value larger than Spinner.LIMIT sets the * receiver's limit to Spinner.LIMIT. *

* @param limit new text limit * * @exception IllegalArgumentException * @exception SWTException * * @see #LIMIT * * @since 3.4 */ public void setTextLimit (int limit) { checkWidget (); if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO); OS.gtk_entry_set_max_length (handle, limit); } /** * Sets the number of decimal places used by the receiver. *

* The digit setting is used to allow for floating point values in the receiver. * For example, to set the selection to a floating point value of 1.37 call setDigits() with * a value of 2 and setSelection() with a value of 137. Similarly, if getDigits() has a value * of 2 and getSelection() returns 137 this should be interpreted as 1.37. This applies to all * numeric APIs. *

* * @param value the new digits (must be greater than or equal to zero) * * @exception IllegalArgumentException * @exception SWTException */ public void setDigits (int value) { checkWidget (); if (value < 0) error (SWT.ERROR_INVALID_ARGUMENT); int digits = OS.gtk_spin_button_get_digits (handle); if (value == digits) return; long /*int*/ hAdjustment = OS.gtk_spin_button_get_adjustment (handle); GtkAdjustment adjustment = new GtkAdjustment (); gtk_adjustment_get (hAdjustment, adjustment); int diff = Math.abs (value - digits); int factor = 1; for (int i = 0; i < diff; i++) factor *= 10; if (digits > value) { adjustment.value *= factor; adjustment.upper *= factor; adjustment.lower *= factor; adjustment.step_increment *= factor; adjustment.page_increment *= factor; climbRate *= factor; } else { adjustment.value /= factor; adjustment.upper /= factor; adjustment.lower /= factor; adjustment.step_increment /= factor; adjustment.page_increment /= factor; climbRate /= factor; } gtk_adjustment_configure (hAdjustment, adjustment); OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); OS.gtk_spin_button_configure (handle, hAdjustment, climbRate, value); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); } /** * Sets the receiver's selection, minimum value, maximum * value, digits, increment and page increment all at once. *

* Note: This is similar to setting the values individually * using the appropriate methods, but may be implemented in a * more efficient fashion on some platforms. *

* * @param selection the new selection value * @param minimum the new minimum value * @param maximum the new maximum value * @param digits the new digits value * @param increment the new increment value * @param pageIncrement the new pageIncrement value * * @exception SWTException * * @since 3.2 */ public void setValues (int selection, int minimum, int maximum, int digits, int increment, int pageIncrement) { checkWidget (); if (maximum < minimum) return; if (digits < 0) return; if (increment < 1) return; if (pageIncrement < 1) return; selection = Math.min (Math.max (minimum, selection), maximum); double factor = 1; for (int i = 0; i < digits; i++) factor *= 10; OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); OS.gtk_spin_button_set_range (handle, minimum / factor, maximum / factor); OS.gtk_spin_button_set_increments (handle, increment / factor, pageIncrement / factor); OS.gtk_spin_button_set_value (handle, selection / factor); /* * The value of climb-rate indicates the acceleration rate * to spin the value when the button is pressed and hold * on the arrow button. This value should be varied * depending upon the value of digits. */ climbRate = 1.0 / factor; long /*int*/ adjustment = OS.gtk_spin_button_get_adjustment(handle); OS.gtk_spin_button_configure (handle, adjustment, climbRate, digits); OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, VALUE_CHANGED); } boolean checkSubwindow () { return false; } boolean translateTraversal (GdkEventKey keyEvent) { int key = keyEvent.keyval; switch (key) { case OS.GDK_KP_Enter: case OS.GDK_Return: { long /*int*/ imContext = imContext (); if (imContext != 0) { long /*int*/ [] preeditString = new long /*int*/ [1]; OS.gtk_im_context_get_preedit_string (imContext, preeditString, null, null); if (preeditString [0] != 0) { int length = OS.strlen (preeditString [0]); OS.g_free (preeditString [0]); if (length != 0) return false; } } } } return super.translateTraversal (keyEvent); } String verifyText (String string, int start, int end) { if (string.length () == 0 && start == end) return null; Event event = new Event (); event.text = string; event.start = start; event.end = end; long /*int*/ eventPtr = OS.gtk_get_current_event (); if (eventPtr != 0) { GdkEventKey gdkEvent = new GdkEventKey (); OS.memmove (gdkEvent, eventPtr, GdkEventKey.sizeof); switch (gdkEvent.type) { case OS.GDK_KEY_PRESS: setKeyState (event, gdkEvent); break; } OS.gdk_event_free (eventPtr); } int index = 0; if (OS.gtk_spin_button_get_digits (handle) > 0) { String decimalSeparator = getDecimalSeparator (); index = string.indexOf (decimalSeparator); if (index != -1) { string = string.substring (0, index) + string.substring (index + 1); } index = 0; } if (string.length () > 0) { long /*int*/ hAdjustment = OS.gtk_spin_button_get_adjustment (handle); double lower = gtk_adjustment_get_lower (hAdjustment); if (lower < 0 && string.charAt (0) == '-') index++; } while (index < string.length ()) { if (!Character.isDigit (string.charAt (index))) break; index++; } event.doit = index == string.length (); /* * It is possible (but unlikely), that application * code could have disposed the widget in the verify * event. If this happens, answer null to cancel * the operation. */ sendEvent (SWT.Verify, event); if (!event.doit || isDisposed ()) return null; return event.text; } }