| package org.eclipse.swt.widgets;
|
|
|
| /*
|
| * (c) Copyright IBM Corp. 2000, 2001.
|
| * All Rights Reserved
|
| */
|
|
|
| import org.eclipse.swt.internal.*;
|
| import org.eclipse.swt.internal.photon.*;
|
| import org.eclipse.swt.*;
|
| 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 {
|
| TabFolder parent;
|
| Control control;
|
| 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 |
| * for all SWT widget classes should include a comment which |
| * describes the style constants which are applicable to the class. |
| * </p> |
| * |
| * @param parent a composite control which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| * |
| * @see SWT |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public TabItem (TabFolder parent, int style) {
|
| this(parent, style, 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 |
| * for all SWT widget classes should include a comment which |
| * describes the style constants which are applicable to the class. |
| * </p> |
| * |
| * @param parent a composite control which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * @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);
|
| }
|
|
|
| protected void checkSubclass () {
|
| if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
|
| }
|
|
|
| /** |
| * 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 ();
|
| parent.destroyItem (this);
|
| }
|
|
|
| void releaseWidget () {
|
| super.releaseWidget ();
|
| control = null;
|
| parent = null;
|
| toolTipText = 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();
|
| if (control != null) {
|
| if (control.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT);
|
| if (control.parent != parent) error (SWT.ERROR_INVALID_PARENT);
|
| }
|
| Control oldControl = this.control, newControl = control;
|
| this.control = control;
|
| int index = parent.indexOf (this);
|
| if (index != parent.getSelectionIndex ()) return;
|
| if (newControl != null) {
|
| newControl.setBounds (parent.getClientArea ());
|
| newControl.setVisible (true);
|
| }
|
| if (oldControl != null) oldControl.setVisible (false);
|
| }
|
|
|
| public void setImage (Image image) {
|
| checkWidget();
|
| //NOT SUPPORTED
|
| }
|
|
|
| public void setText (String text) {
|
| checkWidget();
|
| super.setText (text);
|
| int index = parent.indexOf (this);
|
| int [] args = {OS.Pt_ARG_PG_PANEL_TITLES, 0, 0};
|
| OS.PtGetResources (parent.handle, args.length / 3, args);
|
| int count = args [2];
|
| int oldPtr = args [1];
|
| int newPtr = OS.malloc (count * 4);
|
| for (int i=0; i<count; i++) {
|
| int str;
|
| if (i == index) {
|
| byte [] buffer = Converter.wcsToMbcs (null, text);
|
| str = OS.malloc (buffer.length + 1);
|
| OS.memmove (str, buffer, buffer.length);
|
| } else {
|
| int [] address = new int [1];
|
| OS.memmove (address, oldPtr + (i * 4), 4);
|
| int length = OS.strlen (address [0]);
|
| str = OS.malloc (length + 1);
|
| OS.memmove (str, address [0], length + 1);
|
| }
|
| OS.memmove (newPtr + (i * 4), new int [] {str}, 4);
|
| }
|
| args = new int [] {OS.Pt_ARG_PG_PANEL_TITLES, newPtr, count};
|
| OS.PtSetResources (parent.handle, args.length / 3, args);
|
| for (int i=0; i<count; i++) {
|
| int [] address = new int [1];
|
| OS.memmove (address, newPtr + (i * 4), 4);
|
| OS.free (address [0]);
|
| }
|
| OS.free (newPtr);
|
| }
|
|
|
| /** |
| * 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;
|
| }
|
| }
|