| /******************************************************************************* |
| * Copyright (c) 2000, 2009 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.internal.*; |
| import org.eclipse.swt.internal.photon.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.events.*; |
| |
| /** |
| * Instances of this class represent a selectable user interface object that |
| * issues notification when pressed and released. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>ARROW, CHECK, PUSH, RADIO, TOGGLE, FLAT</dd> |
| * <dd>UP, DOWN, LEFT, RIGHT, CENTER</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>Selection</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles ARROW, CHECK, PUSH, RADIO, and TOGGLE |
| * may be specified. |
| * </p><p> |
| * Note: Only one of the styles LEFT, RIGHT, and CENTER may be specified. |
| * </p><p> |
| * Note: Only one of the styles UP, DOWN, LEFT, and RIGHT may be specified |
| * when the ARROW style is specified. |
| * </p><p> |
| * IMPORTANT: This class is intended to be subclassed <em>only</em> |
| * within the SWT implementation. |
| * </p> |
| * |
| * @see <a href="http://www.eclipse.org/swt/snippets/#button">Button snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public class Button extends Control { |
| String text = ""; |
| Image image; |
| boolean grayed; |
| |
| /** |
| * 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#ARROW |
| * @see SWT#CHECK |
| * @see SWT#PUSH |
| * @see SWT#RADIO |
| * @see SWT#TOGGLE |
| * @see SWT#FLAT |
| * @see SWT#UP |
| * @see SWT#DOWN |
| * @see SWT#LEFT |
| * @see SWT#RIGHT |
| * @see SWT#CENTER |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public Button (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| static int checkStyle (int style) { |
| style = checkBits (style, SWT.PUSH, SWT.ARROW, SWT.CHECK, SWT.RADIO, SWT.TOGGLE, 0); |
| if ((style & (SWT.PUSH | SWT.TOGGLE)) != 0) { |
| return checkBits (style, SWT.CENTER, SWT.LEFT, SWT.RIGHT, 0, 0, 0); |
| } |
| if ((style & (SWT.CHECK | SWT.RADIO)) != 0) { |
| return checkBits (style, SWT.LEFT, SWT.RIGHT, SWT.CENTER, 0, 0, 0); |
| } |
| if ((style & SWT.ARROW) != 0) { |
| style |= SWT.NO_FOCUS; |
| return checkBits (style, SWT.UP, SWT.DOWN, SWT.LEFT, SWT.RIGHT, 0, 0); |
| } |
| return style; |
| } |
| |
| /** |
| * 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 <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * <code>widgetSelected</code> is called when the control is selected by the user. |
| * <code>widgetDefaultSelected</code> is not called. |
| * </p> |
| * <p> |
| * When the <code>SWT.RADIO</code> style bit is set, the <code>widgetSelected</code> method is |
| * also called when the receiver loses selection because another item in the same radio group |
| * was selected by the user. During <code>widgetSelected</code> the application can use |
| * <code>getSelection()</code> to determine the current selected state of the receiver. |
| * </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); |
| } |
| |
| void click () { |
| click (handle); |
| } |
| |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget(); |
| int border = getBorderWidth (); |
| int width = border * 2, height = border * 2; |
| if ((style & SWT.ARROW) != 0) { |
| if (wHint != SWT.DEFAULT) width += wHint; |
| else width = 17; |
| if (hHint != SWT.DEFAULT) height += hHint; |
| else height = 17; |
| return new Point (width, height); |
| } |
| PhDim_t dim = new PhDim_t(); |
| if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidget (handle); |
| OS.PtWidgetPreferredSize(handle, dim); |
| width = dim.w; height = dim.h; |
| if (wHint != SWT.DEFAULT || hHint != SWT.DEFAULT) { |
| int [] args = { |
| OS.Pt_ARG_MARGIN_LEFT, 0, 0, // 1 |
| OS.Pt_ARG_MARGIN_RIGHT, 0, 0, // 4 |
| OS.Pt_ARG_MARGIN_TOP, 0, 0, // 7 |
| OS.Pt_ARG_MARGIN_BOTTOM, 0, 0, // 10 |
| // OS.Pt_ARG_MARGIN_WIDTH, 0, 0, // 13 |
| // OS.Pt_ARG_MARGIN_HEIGHT, 0, 0, // 16 |
| }; |
| OS.PtGetResources (handle, args.length / 3, args); |
| PhArea_t area = new PhArea_t (); |
| area.size_w = (short) wHint; |
| area.size_h = (short) hHint; |
| |
| /* |
| * This code is intentionally commented. Bug compatible with Windows. |
| */ |
| // PhRect_t rect = new PhRect_t (); |
| // rect.lr_x = (short) (wHint - 1); |
| // rect.lr_y = (short) (hHint - 1); |
| // OS.PtSetAreaFromWidgetCanvas (handle, rect, area); |
| if (wHint != SWT.DEFAULT) { |
| width = area.size_w + /*(args [13] * 2)*/ + args [1] + args [4]; |
| } |
| if (hHint != SWT.DEFAULT) { |
| height = area.size_h + /*(args [16] * 2)*/ + args [7] + args [10]; |
| } |
| } |
| return new Point (width, height); |
| } |
| |
| void createHandle (int index) { |
| state |= HANDLE; |
| int parentHandle = parent.parentingHandle (); |
| |
| /* ARROW button */ |
| if ((style & SWT.ARROW) != 0) { |
| int [] args = { |
| OS.Pt_ARG_FLAGS, 0, OS.Pt_GETS_FOCUS, |
| OS.Pt_ARG_BASIC_FLAGS, OS.Pt_HORIZONTAL_GRADIENT, OS.Pt_STATIC_GRADIENT | OS.Pt_HORIZONTAL_GRADIENT, |
| OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS, |
| }; |
| handle = OS.PtCreateWidget (display.PtButton, parentHandle, args.length / 3, args); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| return; |
| } |
| |
| /* Compute alignment */ |
| int alignment = OS.Pt_LEFT; |
| if ((style & SWT.CENTER) != 0) alignment = OS.Pt_CENTER; |
| if ((style & SWT.RIGHT) != 0) alignment = OS.Pt_RIGHT; |
| |
| /* CHECK or RADIO button */ |
| if ((style & (SWT.CHECK | SWT.RADIO)) != 0) { |
| int [] args = { |
| OS.Pt_ARG_HORIZONTAL_ALIGNMENT, alignment, 0, |
| OS.Pt_ARG_INDICATOR_TYPE, (style & SWT.CHECK) != 0 ? OS.Pt_N_OF_MANY : OS.Pt_ONE_OF_MANY, 0, |
| OS.Pt_ARG_FILL_COLOR, display.WIDGET_BACKGROUND, 0, |
| OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS, |
| }; |
| |
| handle = OS.PtCreateWidget (display.PtToggleButton, parentHandle, args.length / 3, args); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| return; |
| } |
| |
| /* PUSH or TOGGLE button */ |
| int [] args = { |
| OS.Pt_ARG_FLAGS, (style & SWT.TOGGLE) != 0 ? OS.Pt_TOGGLE : 0, OS.Pt_TOGGLE, |
| OS.Pt_ARG_HORIZONTAL_ALIGNMENT, alignment, 0, |
| OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS, |
| }; |
| handle = OS.PtCreateWidget (display.PtButton, parentHandle, args.length / 3, args); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| } |
| |
| void drawWidget (int widget, int damage) { |
| super.drawWidget (widget, damage); |
| if ((style & SWT.ARROW) != 0) { |
| PhRect_t rect = new PhRect_t (); |
| OS.PtCalcCanvas (handle, rect); |
| int flags = 0; |
| if ((style & SWT.RIGHT) != 0) flags = 2; |
| if ((style & SWT.LEFT) != 0) flags = 1; |
| if ((style & SWT.DOWN) != 0) flags = 8; |
| if ((style & SWT.UP) != 0) flags = 4; |
| OS.PgDrawArrow (rect, (short)0, 0x000000, flags); |
| } |
| } |
| |
| /** |
| * Returns a value which describes the position of the |
| * text or image in the receiver. The value will be one of |
| * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code> |
| * unless the receiver is an <code>ARROW</code> button, in |
| * which case, the alignment will indicate the direction of |
| * the arrow (one of <code>LEFT</code>, <code>RIGHT</code>, |
| * <code>UP</code> or <code>DOWN</code>). |
| * |
| * @return the alignment |
| * |
| * @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 getAlignment () { |
| checkWidget(); |
| if ((style & SWT.ARROW) != 0) { |
| if ((style & SWT.UP) != 0) return SWT.UP; |
| if ((style & SWT.DOWN) != 0) return SWT.DOWN; |
| if ((style & SWT.LEFT) != 0) return SWT.LEFT; |
| if ((style & SWT.RIGHT) != 0) return SWT.RIGHT; |
| return SWT.UP; |
| } |
| if ((style & SWT.LEFT) != 0) return SWT.LEFT; |
| if ((style & SWT.CENTER) != 0) return SWT.CENTER; |
| if ((style & SWT.RIGHT) != 0) return SWT.RIGHT; |
| return SWT.LEFT; |
| } |
| |
| boolean getDefault () { |
| if ((style & SWT.PUSH) == 0) return false; |
| int [] args = {OS.Pt_ARG_BEVEL_CONTRAST, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| return args [1] == 100; |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver is grayed, |
| * and false otherwise. When the widget does not have |
| * the <code>CHECK</code> style, return false. |
| * |
| * @return the grayed state of the checkbox |
| * |
| * @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 3.4 |
| */ |
| public boolean getGrayed () { |
| checkWidget(); |
| if ((style & SWT.CHECK) == 0) return false; |
| return grayed; |
| } |
| |
| /** |
| * Returns the receiver's image if it has one, or null |
| * if it does not. |
| * |
| * @return the receiver's image |
| * |
| * @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 Image getImage () { |
| checkWidget(); |
| return image; |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver is selected, |
| * and false otherwise. |
| * <p> |
| * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, |
| * it is selected when it is checked. When it is of type <code>TOGGLE</code>, |
| * it is selected when it is pushed in. If the receiver is of any other type, |
| * this method returns false. |
| * |
| * @return the selection state |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public boolean getSelection () { |
| checkWidget(); |
| if ((style & (SWT.CHECK | SWT.RADIO | SWT.TOGGLE)) == 0) return false; |
| return (OS.PtWidgetFlags (handle) & OS.Pt_SET) != 0; |
| } |
| |
| String getNameText () { |
| return getText (); |
| } |
| |
| /** |
| * Returns the receiver's text, which will be an empty |
| * string if it has never been set or if the receiver is |
| * an <code>ARROW</code> button. |
| * |
| * @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(); |
| if ((style & SWT.ARROW) != 0) return ""; |
| return text; |
| } |
| |
| void hookEvents () { |
| super.hookEvents (); |
| int windowProc = display.windowProc; |
| OS.PtAddCallback (handle, OS.Pt_CB_ACTIVATE, windowProc, OS.Pt_CB_ACTIVATE); |
| } |
| |
| int hotkeyProc (int widget, int data, int info) { |
| if (setFocus ()) click (); |
| return OS.Pt_CONTINUE; |
| } |
| |
| int Pt_CB_ACTIVATE (int widget, int info) { |
| if ((style & SWT.RADIO) != 0) { |
| if ((parent.getStyle () & SWT.NO_RADIO_GROUP) == 0) { |
| selectRadio (); |
| } |
| } |
| postEvent (SWT.Selection); |
| return OS.Pt_CONTINUE; |
| } |
| |
| int Pt_CB_GOT_FOCUS (int widget, int info) { |
| int result = super.Pt_CB_GOT_FOCUS (widget, info); |
| // widget could be disposed at this point |
| if (handle == 0) return result; |
| if ((style & SWT.PUSH) == 0) return result; |
| getShell ().setDefaultButton (this, false); |
| return result; |
| } |
| |
| int Pt_CB_LOST_FOCUS (int widget, int info) { |
| int result = super.Pt_CB_LOST_FOCUS (widget, info); |
| // widget could be disposed at this point |
| if (handle == 0) return result; |
| if ((style & SWT.PUSH) == 0) return result; |
| if (getDefault ()) { |
| getShell ().setDefaultButton (null, false); |
| } |
| return result; |
| } |
| |
| void releaseWidget () { |
| super.releaseWidget (); |
| image = null; |
| } |
| |
| /** |
| * 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 <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); |
| } |
| |
| void selectRadio () { |
| /* |
| * This code is intentionally commented. When two groups |
| * of radio buttons with the same parent are separated by |
| * another control, the correct behavior should be that |
| * the two groups act independently. This is consistent |
| * with radio tool and menu items. The commented code |
| * implements this behavior. |
| */ |
| // int index = 0; |
| // Control [] children = parent._getChildren (); |
| // while (index < children.length && children [index] != this) index++; |
| // int i = index - 1; |
| // while (i >= 0 && children [i].setRadioSelection (false)) --i; |
| // int j = index + 1; |
| // while (j < children.length && children [j].setRadioSelection (false)) j++; |
| // setSelection (true); |
| Control [] children = parent._getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (this != child) child.setRadioSelection (false); |
| } |
| setSelection (true); |
| } |
| |
| /** |
| * Controls how text, images and arrows will be displayed |
| * in the receiver. The argument should be one of |
| * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code> |
| * unless the receiver is an <code>ARROW</code> button, in |
| * which case, the argument indicates the direction of |
| * the arrow (one of <code>LEFT</code>, <code>RIGHT</code>, |
| * <code>UP</code> or <code>DOWN</code>). |
| * |
| * @param alignment the new alignment |
| * |
| * @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 setAlignment (int alignment) { |
| checkWidget(); |
| if ((style & SWT.ARROW) != 0) { |
| if ((style & (SWT.UP | SWT.DOWN | SWT.LEFT | SWT.RIGHT)) == 0) return; |
| style &= ~(SWT.UP | SWT.DOWN | SWT.LEFT | SWT.RIGHT); |
| style |= alignment & (SWT.UP | SWT.DOWN | SWT.LEFT | SWT.RIGHT); |
| OS.PtDamageWidget (handle); |
| return; |
| } |
| if ((alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER)) == 0) return; |
| style &= ~(SWT.LEFT | SWT.RIGHT | SWT.CENTER); |
| style |= alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER); |
| int align = OS.Pt_LEFT; |
| if ((style & SWT.CENTER) != 0) align = OS.Pt_CENTER; |
| if ((style & SWT.RIGHT) != 0) align = OS.Pt_RIGHT; |
| OS.PtSetResource (handle, OS.Pt_ARG_HORIZONTAL_ALIGNMENT, align, 0); |
| } |
| |
| void setDefault (boolean value) { |
| if ((style & SWT.PUSH) == 0) return; |
| if (getShell ().parent == null) return; |
| OS.PtSetResource (handle, OS.Pt_ARG_BEVEL_CONTRAST, value ? 100 : 20, 0); |
| } |
| |
| boolean setRadioSelection (boolean value) { |
| if ((style & SWT.RADIO) == 0) return false; |
| if (getSelection () != value) { |
| setSelection (value); |
| postEvent (SWT.Selection); |
| } |
| return true; |
| } |
| |
| /** |
| * Sets the selection state of the receiver, if it is of type <code>CHECK</code>, |
| * <code>RADIO</code>, or <code>TOGGLE</code>. |
| * |
| * <p> |
| * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, |
| * it is selected when it is checked. When it is of type <code>TOGGLE</code>, |
| * it is selected when it is pushed in. |
| * |
| * @param selected the new selection state |
| * |
| * @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 (boolean selected) { |
| checkWidget(); |
| if ((style & (SWT.CHECK | SWT.RADIO | SWT.TOGGLE)) == 0) return; |
| OS.PtSetResource (handle, OS.Pt_ARG_FLAGS, selected ? OS.Pt_SET : 0, OS.Pt_SET); |
| } |
| |
| /** |
| * Sets the grayed state of the receiver. This state change |
| * only applies if the control was created with the SWT.CHECK |
| * style. |
| * |
| * @param grayed the new grayed state |
| * |
| * @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 3.4 |
| */ |
| public void setGrayed (boolean grayed) { |
| checkWidget (); |
| if ((style & SWT.CHECK) == 0) return; |
| this.grayed = grayed; |
| } |
| |
| /** |
| * Sets the receiver's image to the argument, which may be |
| * <code>null</code> indicating that no image should be displayed. |
| * <p> |
| * Note that a Button can display an image and text simultaneously |
| * on Windows (starting with XP), GTK+ and OSX. On other platforms, |
| * a Button that has an image and text set into it will display the |
| * image or text that was set most recently. |
| * </p> |
| * @param image the image to display on the receiver (may be <code>null</code>) |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</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 setImage (Image image) { |
| checkWidget(); |
| if ((style & SWT.ARROW) != 0) return; |
| this.image = image; |
| int imageHandle = 0; |
| if (image != null) { |
| if (image.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT); |
| imageHandle = copyPhImage (image.handle); |
| } |
| int [] args = { |
| OS.Pt_ARG_LABEL_IMAGE, imageHandle, 0, |
| OS.Pt_ARG_LABEL_TYPE, OS.Pt_IMAGE, 0 |
| }; |
| OS.PtSetResources (handle, args.length / 3, args); |
| if (imageHandle != 0) OS.free (imageHandle); |
| } |
| |
| /** |
| * Sets the receiver's text. |
| * <p> |
| * This method sets the button label. The label may include |
| * the mnemonic character but must not contain line delimiters. |
| * </p> |
| * <p> |
| * Mnemonics are indicated by an '&' that causes the next |
| * character to be the mnemonic. When the user presses a |
| * key sequence that matches the mnemonic, a selection |
| * event occurs. On most platforms, the mnemonic appears |
| * underlined but may be emphasized in a platform specific |
| * manner. The mnemonic indicator character '&' can be |
| * escaped by doubling it in the string, causing a single |
| * '&' to be displayed. |
| * </p><p> |
| * Note that a Button can display an image and text simultaneously |
| * on Windows (starting with XP), GTK+ and OSX. On other platforms, |
| * a Button that has an image and text set into it will display the |
| * image or text that was set most recently. |
| * </p> |
| * @param string the new text |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the text 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 ((style & SWT.ARROW) != 0) return; |
| text = string; |
| char [] text = new char [string.length ()]; |
| string.getChars (0, text.length, text, 0); |
| char mnemonic = fixMnemonic (text); |
| byte [] buffer = Converter.wcsToMbcs (null, text, true); |
| int ptr1 = OS.malloc (buffer.length); |
| OS.memmove (ptr1, buffer, buffer.length); |
| int ptr2 = 0; |
| if (mnemonic != 0) { |
| byte [] buffer2 = Converter.wcsToMbcs (null, new char []{mnemonic}, true); |
| ptr2 = OS.malloc (buffer2.length); |
| OS.memmove (ptr2, buffer2, buffer2.length); |
| } |
| replaceMnemonic (mnemonic, true, true); |
| int [] args = { |
| OS.Pt_ARG_TEXT_STRING, ptr1, 0, |
| OS.Pt_ARG_LABEL_TYPE, OS.Pt_Z_STRING, 0, |
| OS.Pt_ARG_ACCEL_KEY, ptr2, 0, |
| }; |
| OS.PtSetResources (handle, args.length / 3, args); |
| OS.free (ptr1); |
| OS.free (ptr2); |
| } |
| |
| int traversalCode (int key_sym, PhKeyEvent_t ke) { |
| int code = super.traversalCode (key_sym, ke); |
| if ((style & SWT.RADIO) != 0) code |= SWT.TRAVERSE_ARROW_NEXT | SWT.TRAVERSE_ARROW_PREVIOUS; |
| return code; |
| } |
| |
| int widgetClass () { |
| if ((style & (SWT.CHECK | SWT.RADIO)) != 0) return OS.PtToggleButton (); |
| return OS.PtButton (); |
| } |
| |
| } |