| 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.*;
|
|
|
| /** |
| * Instances of this class represent a selectable user interface object |
| * corresponding to a tab for a page in a tab folder. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>(none)</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>(none)</dd> |
| * </dl> |
| * <p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| */ |
| public class TabItem extends Item {
|
| int labelHandle, imageHandle, pageHandle;
|
| Control control;
|
| TabFolder parent;
|
| String toolTipText;
|
|
|
| /** |
| * Constructs a new instance of this class given its parent |
| * (which must be a <code>TabFolder</code>) and a style value |
| * describing its behavior and appearance. The item is added |
| * to the end of the items maintained by its parent. |
| * <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 |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public TabItem (TabFolder parent, int style) {
|
| super (parent, style);
|
| this.parent = parent;
|
| parent.createItem (this, parent.getItemCount ());
|
| }
|
|
|
| /** |
| * Constructs a new instance of this class given its parent |
| * (which must be a <code>TabFolder</code>), a style value |
| * describing its behavior and appearance, and the index |
| * at which to place it in the items maintained by its parent. |
| * <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 |
| * @param index the index to store the receiver in its parent |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| * |
| * @see SWT |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public TabItem (TabFolder parent, int style, int index) {
|
| super (parent, style);
|
| this.parent = parent;
|
| parent.createItem (this, index);
|
| }
|
|
|
| /** |
| * Returns the control that is used to fill the client area of |
| * the tab folder when the user selects the tab item. If no |
| * control has been set, return <code>null</code>. |
| * <p> |
| * @return the control |
| * |
| * @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 Control getControl () {
|
| checkWidget ();
|
| return control;
|
| }
|
|
|
| public Display getDisplay () {
|
| TabFolder parent = this.parent;
|
| if (parent == null) error (SWT.ERROR_WIDGET_DISPOSED);
|
| return parent.getDisplay ();
|
| }
|
|
|
| /** |
| * Returns the receiver's parent, which must be a <code>TabFolder</code>. |
| * |
| * @return the receiver's parent |
| * |
| * @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 TabFolder getParent () {
|
| checkWidget ();
|
| return parent;
|
| }
|
|
|
| /** |
| * Returns the receiver's tool tip text, or null if it has |
| * not been set. |
| * |
| * @return the receiver's tool tip 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 getToolTipText () {
|
| checkWidget ();
|
| return toolTipText;
|
| }
|
|
|
| void releaseChild () {
|
| super.releaseChild ();
|
| int index = parent.indexOf (this);
|
| if (index == parent.getSelectionIndex ()) {
|
| if (control != null) control.setVisible (false);
|
| }
|
| parent.destroyItem (this);
|
| }
|
|
|
| void releaseHandle () {
|
| super.releaseHandle ();
|
| pageHandle = labelHandle = imageHandle = 0;
|
| }
|
|
|
| void releaseWidget () {
|
| super.releaseWidget ();
|
| parent = null;
|
| }
|
|
|
| /** |
| * Sets the control that is used to fill the client area of |
| * the tab folder when the user selects the tab item. |
| * <p> |
| * @param control the new control (or null) |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the control has been disposed</li> |
| * <li>ERROR_INVALID_PARENT - if the control is not in the same widget tree</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 setControl (Control control) {
|
| checkWidget ();
|
| Control oldControl = this.control, newControl = control;
|
| this.control = control;
|
| int index = parent.indexOf (this);
|
| if (index != parent.getSelectionIndex ()) {
|
| if (newControl != null) newControl.setVisible (false);
|
| return;
|
| }
|
| if (newControl != null) {
|
| newControl.setBounds (parent.getClientArea ());
|
| newControl.setVisible (true);
|
| }
|
| if (oldControl != null) oldControl.setVisible (false);
|
| }
|
|
|
| void setFontDescription (int font) {
|
| OS.gtk_widget_modify_font (labelHandle, font);
|
| OS.gtk_widget_modify_font (imageHandle, font);
|
| }
|
|
|
| void setForegroundColor (GdkColor color) {
|
| OS.gtk_widget_modify_fg (labelHandle, 0, color);
|
| OS.gtk_widget_modify_fg (imageHandle, 0, color);
|
| }
|
|
|
| public void setImage (Image image) {
|
| checkWidget ();
|
| super.setImage (image);
|
| if (image != null) {
|
| OS.gtk_image_set_from_pixmap (imageHandle, image.pixmap, image.mask);
|
| OS.gtk_widget_show (imageHandle);
|
| } else {
|
| OS.gtk_image_set_from_pixmap (imageHandle, 0, 0);
|
| OS.gtk_widget_hide (imageHandle);
|
| }
|
| parent.fixPage ();
|
| }
|
|
|
| public void setText (String string) {
|
| checkWidget ();
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| super.setText (string);
|
| char [] chars = fixMnemonic (string);
|
| byte [] buffer = Converter.wcsToMbcs (null, chars, false);
|
| OS.gtk_label_set_text_with_mnemonic (labelHandle, buffer);
|
| if (string.length () != 0) {
|
| OS.gtk_widget_show (labelHandle);
|
| } else {
|
| OS.gtk_widget_hide (labelHandle);
|
| }
|
| parent.fixPage ();
|
| }
|
|
|
| /** |
| * Sets the receiver's tool tip text to the argument, which |
| * may be null indicating that no tool tip text should be shown. |
| * |
| * @param string the new tool tip text (or null) |
| * |
| * @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 setToolTipText (String string) {
|
| checkWidget ();
|
| toolTipText = string;
|
| }
|
|
|
| }
|