| /******************************************************************************* |
| * Copyright (c) 2000, 2018 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.events.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gtk.*; |
| |
| /** |
| * Instances of this class implement the notebook user interface |
| * metaphor. It allows the user to select a notebook page from |
| * set of pages. |
| * <p> |
| * The item children that may be added to instances of this class |
| * must be of type <code>TabItem</code>. |
| * <code>Control</code> children are created and then set into a |
| * tab item using <code>TabItem#setControl</code>. |
| * </p><p> |
| * Note that although this class is a subclass of <code>Composite</code>, |
| * it does not make sense to set a layout on it. |
| * </p><p> |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>TOP, BOTTOM</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>Selection</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles TOP and BOTTOM may be specified. |
| * </p><p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| * |
| * @see <a href="http://www.eclipse.org/swt/snippets/#tabfolder">TabFolder, TabItem 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 TabFolder extends Composite { |
| /* |
| * Implementation note (see bug 454936, bug 480794): |
| * |
| * Architecture Change on GTK3: |
| * In TabItem#setControl(Control), we reparent the child to be a child of the 'tab' |
| * rather than tabfolder's parent swtFixed container. |
| * Note, this reparenting is only on the GTK side, not on the SWT side. |
| * |
| * GTK2 and GTK3 child nesting behaviour differs now. |
| * GTK2: |
| * swtFixed |
| * |-- GtkNoteBook |
| * | |-- tabLabel1 |
| * | |-- tabLabel2 |
| * |-- swtFixed (child1) //child is sibling of Notebook |
| * |-- swtFixed (child2) |
| * |
| * GTK3+: |
| * swtFixed |
| * |-- GtkNoteBook |
| * |-- tabLabel1 |
| * |-- tabLabel2 |
| * |-- pageHandle (tabItem1) |
| * |-- child1 //child now child of Notebook.pageHandle. |
| * |-- pageHandle (tabItem2) |
| * |-- child1 |
| * |
| * This changes the hierarchy so that children are beneath gtkNotebook (as oppose to |
| * being siblings) and thus fixes DND and background color issues. |
| * In gtk2, reparenting doesn't function properly (tab content appear blank), |
| * so this is a gtk3-specific behavior. |
| * |
| * Note about the reason for reparenting: |
| * Reparenting (as opposed to adding widget to a tab in the first place) is necessary |
| * because the SWT API allows situation where you create a child control before you create a TabItem. |
| */ |
| |
| TabItem [] items; |
| ImageList imageList; |
| |
| /** |
| * 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 |
| * @see SWT#TOP |
| * @see SWT#BOTTOM |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public TabFolder (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| static int checkStyle (int style) { |
| style = checkBits (style, SWT.TOP, SWT.BOTTOM, 0, 0, 0, 0); |
| /* |
| * 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); |
| } |
| |
| @Override |
| protected void checkSubclass () { |
| if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS); |
| } |
| |
| @Override |
| long /*int*/ childStyle () { |
| long /*int*/ rcStyle = GTK.gtk_widget_get_modifier_style (handle); |
| if ((GTK.gtk_rc_style_get_color_flags (rcStyle, 0) & GTK.GTK_RC_BG) != 0) return 0; |
| GTK.gtk_widget_realize (handle); |
| return GTK.gtk_widget_get_style (handle); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the user changes the receiver's selection, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * When <code>widgetSelected</code> is called, the item field of the event object is valid. |
| * <code>widgetDefaultSelected</code> is not called. |
| * </p> |
| * |
| * @param listener the listener which should be notified when the user changes the receiver's selection |
| * |
| * @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); |
| } |
| |
| @Override |
| long /*int*/ clientHandle () { |
| int index = GTK.gtk_notebook_get_current_page (handle); |
| if (index != -1 && items [index] != null) { |
| return items [index].pageHandle; |
| } |
| return handle; |
| } |
| |
| @Override |
| Point computeSizeInPixels (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| Point size = super.computeSizeInPixels (wHint, hHint, changed); |
| if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0; |
| if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0; |
| boolean scrollable = GTK.gtk_notebook_get_scrollable (handle); |
| GTK.gtk_notebook_set_scrollable (handle, false); |
| Point notebookSize = computeNativeSize (handle, wHint, hHint, changed); |
| GTK.gtk_notebook_set_scrollable (handle, scrollable); |
| if (GTK.GTK_VERSION >= OS.VERSION (3, 2, 0)) { |
| int[] initialGap = new int[1]; |
| GTK.gtk_widget_style_get (handle, OS.initial_gap, initialGap, 0); |
| notebookSize.x += initialGap[0]*2; |
| } |
| size.x = Math.max (notebookSize.x, size.x); |
| size.y = Math.max (notebookSize.y, size.y); |
| return size; |
| } |
| |
| @Override |
| Rectangle computeTrimInPixels (int x, int y, int width, int height) { |
| checkWidget(); |
| forceResize (); |
| long /*int*/ clientHandle = clientHandle (); |
| GtkAllocation allocation = new GtkAllocation (); |
| GTK.gtk_widget_get_allocation (clientHandle, allocation); |
| int clientX = allocation.x; |
| int clientY = allocation.y; |
| x -= clientX; |
| y -= clientY; |
| width += clientX + clientX; |
| if ((style & SWT.BOTTOM) != 0) { |
| int clientHeight = allocation.height; |
| GTK.gtk_widget_get_allocation (handle, allocation); |
| int parentHeight = allocation.height; |
| height += parentHeight - clientHeight; |
| } else { |
| height += clientX + clientY; |
| } |
| return new Rectangle (x, y, width, height); |
| } |
| |
| @Override |
| Rectangle getClientAreaInPixels () { |
| Rectangle clientRectangle = super.getClientAreaInPixels (); |
| |
| if (GTK.GTK3) { |
| /* |
| * Bug 454936 (see also other 454936 references) |
| * SWT's calls to gtk_widget_size_allocate and gtk_widget_set_allocation |
| * causes GTK+ to move the clientHandle's SwtFixed down by the size of the labels. |
| * These calls can come up from 'shell' and TabFolder has no control over these calls. |
| * |
| * This is an undesired side-effect. Client handle's x & y positions should never |
| * be incremented as this is an internal sub-container. |
| * |
| * Note: 0 by 0 was chosen as 1 by 1 shifts controls beyond their original pos. |
| * The long term fix would be to not use widget_*_allocation from higher containers, |
| * but this would require removal of swtFixed. |
| * |
| * This is Gtk3-specific for Tabfolder as the architecture is changed in gtk3 only. |
| */ |
| clientRectangle.x = 0; |
| clientRectangle.y = 0; |
| } |
| return clientRectangle; |
| } |
| |
| |
| @Override |
| void createHandle (int index) { |
| state |= HANDLE; |
| fixedHandle = OS.g_object_new (display.gtk_fixed_get_type (), 0); |
| if (fixedHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| GTK.gtk_widget_set_has_window (fixedHandle, true); |
| handle = GTK.gtk_notebook_new (); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| GTK.gtk_container_add (fixedHandle, handle); |
| GTK.gtk_notebook_set_show_tabs (handle, true); |
| GTK.gtk_notebook_set_scrollable (handle, true); |
| if ((style & SWT.BOTTOM) != 0) { |
| GTK.gtk_notebook_set_tab_pos (handle, GTK.GTK_POS_BOTTOM); |
| } |
| } |
| |
| @Override |
| void createWidget (int index) { |
| super.createWidget(index); |
| items = new TabItem [4]; |
| } |
| |
| void createItem (TabItem item, int index) { |
| long /*int*/ list = GTK.gtk_container_get_children (handle); |
| int itemCount = 0; |
| if (list != 0) { |
| itemCount = OS.g_list_length (list); |
| OS.g_list_free (list); |
| } |
| if (!(0 <= index && index <= itemCount)) error (SWT.ERROR_INVALID_RANGE); |
| if (itemCount == items.length) { |
| TabItem [] newItems = new TabItem [items.length + 4]; |
| System.arraycopy (items, 0, newItems, 0, items.length); |
| items = newItems; |
| } |
| long /*int*/ boxHandle = gtk_box_new (GTK.GTK_ORIENTATION_HORIZONTAL, false, 0); |
| if (boxHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| long /*int*/ labelHandle = GTK.gtk_label_new_with_mnemonic (null); |
| if (labelHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| long /*int*/ imageHandle = GTK.gtk_image_new (); |
| if (imageHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| GTK.gtk_container_add (boxHandle, imageHandle); |
| GTK.gtk_container_add (boxHandle, labelHandle); |
| long /*int*/ pageHandle = OS.g_object_new (display.gtk_fixed_get_type (), 0); |
| if (pageHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE); |
| GTK.gtk_notebook_insert_page (handle, pageHandle, boxHandle, index); |
| OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE); |
| GTK.gtk_widget_show (boxHandle); |
| GTK.gtk_widget_show (labelHandle); |
| GTK.gtk_widget_show (pageHandle); |
| item.state |= HANDLE; |
| item.handle = boxHandle; |
| item.labelHandle = labelHandle; |
| item.imageHandle = imageHandle; |
| item.pageHandle = pageHandle; |
| System.arraycopy (items, index, items, index + 1, itemCount++ - index); |
| items [index] = item; |
| if ((state & FOREGROUND) != 0) { |
| item.setForegroundGdkRGBA (item.handle, getForegroundGdkRGBA()); |
| } |
| if ((state & FONT) != 0) { |
| item.setFontDescription (getFontDescription()); |
| } |
| if (itemCount == 1) { |
| OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE); |
| GTK.gtk_notebook_set_current_page (handle, 0); |
| OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE); |
| Event event = new Event(); |
| event.item = items[0]; |
| sendSelectionEvent (SWT.Selection, event, false); |
| // the widget could be destroyed at this point |
| } |
| } |
| |
| void destroyItem (TabItem item) { |
| int index = 0; |
| int itemCount = getItemCount(); |
| while (index < itemCount) { |
| if (items [index] == item) break; |
| index++; |
| } |
| if (index == itemCount) error (SWT.ERROR_ITEM_NOT_REMOVED); |
| int oldIndex = GTK.gtk_notebook_get_current_page (handle); |
| OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE); |
| GTK.gtk_notebook_remove_page (handle, index); |
| OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE); |
| System.arraycopy (items, index + 1, items, index, --itemCount - index); |
| items [itemCount] = null; |
| if (index == oldIndex) { |
| int newIndex = GTK.gtk_notebook_get_current_page (handle); |
| if (newIndex != -1) { |
| Control control = items [newIndex].getControl (); |
| if (control != null && !control.isDisposed ()) { |
| control.setBoundsInPixels (getClientAreaInPixels()); |
| control.setVisible (true); |
| } |
| Event event = new Event (); |
| event.item = items [newIndex]; |
| sendSelectionEvent (SWT.Selection, event, true); |
| // the widget could be destroyed at this point |
| } |
| } |
| } |
| |
| @Override |
| long /*int*/ eventHandle () { |
| return handle; |
| } |
| |
| @Override |
| Control[] _getChildren() { |
| Control [] directChildren = super._getChildren (); |
| if (GTK.GTK3) { |
| int directCount = directChildren.length; |
| int count = items == null ? 0 : items.length; |
| Control [] children = new Control [count + directCount]; |
| int i = 0; |
| for (int j = 0; j < count; j++) { |
| TabItem tabItem = items[j]; |
| if (tabItem != null && !tabItem.isDisposed()) { |
| long /*int*/ parentHandle = tabItem.pageHandle; |
| long /*int*/ list = GTK.gtk_container_get_children (parentHandle); |
| if (list != 0) { |
| long /*int*/ handle = OS.g_list_data (list); |
| if (handle != 0) { |
| Widget widget = display.getWidget (handle); |
| if (widget != null && widget != this) { |
| if (widget instanceof Control) { |
| children [i++] = (Control) widget; |
| } |
| } |
| } |
| OS.g_list_free (list); |
| } |
| } |
| } |
| if (i == count + directCount) return children; |
| Control [] newChildren; |
| if (i == count) { |
| newChildren = children; |
| } else { |
| newChildren = new Control [i + directCount]; |
| System.arraycopy (children, 0, newChildren, 0, i); |
| } |
| System.arraycopy (directChildren, 0, newChildren, i, directCount); |
| return newChildren; |
| |
| } else { |
| return directChildren; |
| } |
| } |
| |
| /** |
| * Returns the item at the given, zero-relative index in the |
| * receiver. 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> |
| */ |
| public TabItem getItem (int index) { |
| checkWidget(); |
| if (!(0 <= index && index < getItemCount())) error (SWT.ERROR_INVALID_RANGE); |
| long /*int*/ list = GTK.gtk_container_get_children (handle); |
| if (list == 0) error (SWT.ERROR_CANNOT_GET_ITEM); |
| int itemCount = OS.g_list_length (list); |
| OS.g_list_free (list); |
| if (!(0 <= index && index < itemCount)) error (SWT.ERROR_CANNOT_GET_ITEM); |
| return items [index]; |
| } |
| |
| /** |
| * Returns the tab item at the given point in the receiver |
| * or null if no such item exists. The point is in the |
| * coordinate system of the receiver. |
| * |
| * @param point the point used to locate the item |
| * @return the tab item at the given point, or null if the point is not in a tab item |
| * |
| * @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> |
| * |
| * @since 3.4 |
| */ |
| public TabItem getItem(Point point) { |
| checkWidget(); |
| if (point == null) error (SWT.ERROR_NULL_ARGUMENT); |
| long /*int*/ list = GTK.gtk_container_get_children (handle); |
| if (list == 0) return null; |
| int itemCount = OS.g_list_length (list); |
| OS.g_list_free (list); |
| for (int i = 0; i < itemCount; i++) { |
| TabItem item = items[i]; |
| Rectangle rect = item.getBounds(); |
| if (rect.contains(point)) return item; |
| } |
| return null; |
| } |
| |
| /** |
| * Returns the number of items contained in the receiver. |
| * |
| * @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> |
| */ |
| public int getItemCount () { |
| checkWidget(); |
| long /*int*/ list = GTK.gtk_container_get_children (handle); |
| if (list == 0) return 0; |
| int itemCount = OS.g_list_length (list); |
| OS.g_list_free (list); |
| return itemCount; |
| } |
| |
| /** |
| * Returns an array of <code>TabItem</code>s which are the items |
| * in the receiver. |
| * <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 |
| * |
| * @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 TabItem [] getItems () { |
| checkWidget(); |
| int count = getItemCount (); |
| TabItem [] result = new TabItem [count]; |
| System.arraycopy (items, 0, result, 0, count); |
| return result; |
| } |
| |
| /** |
| * Returns an array of <code>TabItem</code>s that are currently |
| * selected in the receiver. An empty array indicates that no |
| * items are selected. |
| * <p> |
| * Note: This is not the actual structure used by the receiver |
| * to maintain its selection, so modifying the array will |
| * not affect the receiver. |
| * </p> |
| * @return an array representing the selection |
| * |
| * @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 TabItem [] getSelection () { |
| checkWidget(); |
| int index = GTK.gtk_notebook_get_current_page (handle); |
| if (index == -1) return new TabItem [0]; |
| return new TabItem [] {items [index]}; |
| } |
| |
| /** |
| * Returns the zero-relative index of the item which is currently |
| * selected in the receiver, 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(); |
| return GTK.gtk_notebook_get_current_page (handle); |
| } |
| |
| @Override |
| long /*int*/ gtk_focus (long /*int*/ widget, long /*int*/ directionType) { |
| return 0; |
| } |
| |
| @Override |
| long /*int*/ gtk_switch_page (long /*int*/ widget, long /*int*/ page, long /*int*/ page_num) { |
| int index = GTK.gtk_notebook_get_current_page (handle); |
| if (index != -1) { |
| Control control = items [index].getControl (); |
| if (control != null && !control.isDisposed ()) { |
| control.setVisible (false); |
| } |
| } else { |
| return 0; |
| } |
| TabItem item = items [(int)/*64*/page_num]; |
| Control control = item.getControl (); |
| if (control != null && !control.isDisposed ()) { |
| control.setBoundsInPixels(getClientAreaInPixels()); |
| control.setVisible (true); |
| } |
| Event event = new Event(); |
| event.item = item; |
| sendSelectionEvent (SWT.Selection, event, false); |
| return 0; |
| } |
| |
| @Override |
| void hookEvents () { |
| super.hookEvents (); |
| OS.g_signal_connect_closure (handle, OS.switch_page, display.getClosure (SWITCH_PAGE), false); |
| } |
| |
| /** |
| * 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 item the search item |
| * @return the index of the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the item 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 (TabItem item) { |
| checkWidget(); |
| if (item == null) error (SWT.ERROR_NULL_ARGUMENT); |
| long /*int*/ list = GTK.gtk_container_get_children (handle); |
| if (list == 0) return -1; |
| int count = OS.g_list_length (list); |
| OS.g_list_free (list); |
| for (int i=0; i<count; i++) { |
| if (items [i] == item) return i; |
| } |
| return -1; |
| } |
| |
| @Override |
| Point minimumSize (int wHint, int hHint, boolean flushCache) { |
| Control [] children = _getChildren (); |
| int width = 0, height = 0; |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| int index = 0; |
| int count = 0; |
| long /*int*/ list = GTK.gtk_container_get_children (handle); |
| if (list != 0) { |
| count = OS.g_list_length (list); |
| OS.g_list_free (list); |
| } |
| while (index < count) { |
| if (items [index].control == child) break; |
| index++; |
| } |
| if (index == count) { |
| Rectangle rect = DPIUtil.autoScaleUp(child.getBounds ()); |
| width = Math.max (width, rect.x + rect.width); |
| height = Math.max (height, rect.y + rect.height); |
| } else { |
| /* |
| * Since computeSize can be overridden by subclasses, we cannot |
| * call computeSizeInPixels directly. |
| */ |
| Point size = DPIUtil.autoScaleUp(child.computeSize (DPIUtil.autoScaleDown(wHint), DPIUtil.autoScaleDown(hHint), flushCache)); |
| width = Math.max (width, size.x); |
| height = Math.max (height, size.y); |
| } |
| } |
| return new Point (width, height); |
| } |
| |
| @Override |
| boolean mnemonicHit (char key) { |
| int itemCount = getItemCount (); |
| for (int i=0; i<itemCount; i++) { |
| long /*int*/ labelHandle = items [i].labelHandle; |
| if (labelHandle != 0 && mnemonicHit (labelHandle, key)) return true; |
| } |
| return false; |
| } |
| |
| @Override |
| boolean mnemonicMatch (char key) { |
| int itemCount = getItemCount (); |
| for (int i=0; i<itemCount; i++) { |
| long /*int*/ labelHandle = items [i].labelHandle; |
| if (labelHandle != 0 && mnemonicHit (labelHandle, key)) return true; |
| } |
| return false; |
| } |
| |
| @Override |
| void releaseChildren (boolean destroy) { |
| if (items != null) { |
| for (int i=0; i<items.length; i++) { |
| TabItem item = items [i]; |
| if (item != null && !item.isDisposed ()) { |
| item.release (false); |
| } |
| } |
| items = null; |
| } |
| super.releaseChildren (destroy); |
| } |
| |
| @Override |
| void releaseWidget () { |
| super.releaseWidget (); |
| if (imageList != null) imageList.dispose (); |
| imageList = null; |
| } |
| |
| @Override |
| void removeControl (Control control) { |
| super.removeControl (control); |
| int count = getItemCount (); |
| for (int i=0; i<count; i++) { |
| TabItem item = items [i]; |
| if (item.control == control) item.setControl (null); |
| } |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the user changes the receiver's selection. |
| * |
| * @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); |
| } |
| |
| @Override |
| void reskinChildren (int flags) { |
| if (items != null) { |
| long /*int*/ list = GTK.gtk_container_get_children (handle); |
| if (list != 0){ |
| int count = OS.g_list_length (list); |
| OS.g_list_free (list); |
| for (int i=0; i<count; i++) { |
| TabItem item = items [i]; |
| if (item != null) item.reskin (flags); |
| } |
| } |
| } |
| super.reskinChildren (flags); |
| } |
| |
| @Override |
| void setBackgroundGdkRGBA (long /*int*/ context, long /*int*/ handle, GdkRGBA rgba) { |
| assert GTK.GTK3 : "GTK3 code was run by GTK2"; |
| if (GTK.GTK_VERSION >= OS.VERSION(3, 14, 0)) { |
| // Form background string |
| String name = GTK.GTK_VERSION >= OS.VERSION(3, 20, 0) ? "notebook header" : "GtkNotebook.header"; |
| String css = name + " {background-color: " + display.gtk_rgba_to_css_string (rgba) + ";}"; |
| |
| // Cache background |
| cssBackground = css; |
| |
| // Apply background color and any cached foreground color |
| String finalCss = display.gtk_css_create_css_color_string (cssBackground, cssForeground, SWT.BACKGROUND); |
| gtk_css_provider_load_from_css (context, finalCss); |
| } else { |
| GTK.gtk_widget_override_background_color (handle, GTK.GTK_STATE_FLAG_NORMAL, rgba); |
| } |
| } |
| |
| @Override |
| int setBounds (int x, int y, int width, int height, boolean move, boolean resize) { |
| int result = super.setBounds (x, y, width, height, move, resize); |
| if ((result & RESIZED) != 0) { |
| int index = getSelectionIndex (); |
| if (index != -1) { |
| TabItem item = items [index]; |
| Control control = item.control; |
| if (control != null && !control.isDisposed ()) { |
| control.setBoundsInPixels (getClientAreaInPixels ()); |
| } |
| } |
| } |
| return result; |
| } |
| |
| @Override |
| void setFontDescription (long /*int*/ font) { |
| super.setFontDescription (font); |
| TabItem [] items = getItems (); |
| for (int i = 0; i < items.length; i++) { |
| if (items[i] != null) { |
| items[i].setFontDescription (font); |
| } |
| } |
| } |
| |
| @Override |
| void setForegroundGdkRGBA (GdkRGBA rgba) { |
| assert GTK.GTK3 : "GTK3 code was run by GTK2"; |
| super.setForegroundGdkRGBA(rgba); |
| TabItem [] items = getItems (); |
| for (int i = 0; i < items.length; i++) { |
| if (items[i] != null) { |
| items[i].setForegroundRGBA (rgba); |
| } |
| } |
| } |
| |
| @Override |
| void setOrientation (boolean create) { |
| super.setOrientation (create); |
| if (items != null) { |
| for (int i=0; i<items.length; i++) { |
| if (items[i] != null) items[i].setOrientation (create); |
| } |
| } |
| } |
| |
| /** |
| * Selects the item at the given zero-relative index in the receiver. |
| * If the item at the index was already selected, it remains selected. |
| * The current selection is first cleared, then the new items are |
| * 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 setSelection (int index) { |
| checkWidget (); |
| if (!(0 <= index && index < getItemCount ())) return; |
| setSelection (index, false); |
| } |
| |
| void setSelection (int index, boolean notify) { |
| if (index < 0) return; |
| int oldIndex = GTK.gtk_notebook_get_current_page (handle); |
| if (oldIndex == index) return; |
| if (oldIndex != -1) { |
| TabItem item = items [oldIndex]; |
| Control control = item.control; |
| if (control != null && !control.isDisposed ()) { |
| control.setVisible (false); |
| } |
| } |
| OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE); |
| GTK.gtk_notebook_set_current_page (handle, index); |
| OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE); |
| int newIndex = GTK.gtk_notebook_get_current_page (handle); |
| if (newIndex != -1) { |
| TabItem item = items [newIndex]; |
| Control control = item.control; |
| if (control != null && !control.isDisposed ()) { |
| control.setBoundsInPixels (getClientAreaInPixels ()); |
| control.setVisible (true); |
| } |
| if (notify) { |
| Event event = new Event (); |
| event.item = item; |
| sendSelectionEvent (SWT.Selection, event, true); |
| } |
| } |
| } |
| |
| /** |
| * Sets the receiver's selection to the given item. |
| * The current selected is first cleared, then the new item is |
| * selected. |
| * |
| * @param item the item to select |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the item 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 3.2 |
| */ |
| public void setSelection (TabItem item) { |
| if (item == null) error (SWT.ERROR_NULL_ARGUMENT); |
| setSelection (new TabItem [] {item}); |
| } |
| |
| /** |
| * Sets the receiver's selection to be the given array of items. |
| * The current selected is first cleared, then the new items are |
| * selected. |
| * |
| * @param items the array of items |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the items array 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 (TabItem [] items) { |
| checkWidget(); |
| if (items == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (items.length == 0) { |
| setSelection (-1, false); |
| } else { |
| for (int i=items.length-1; i>=0; --i) { |
| int index = indexOf (items [i]); |
| if (index != -1) setSelection (index, false); |
| } |
| } |
| } |
| |
| @Override |
| boolean traversePage (final boolean next) { |
| if (next) { |
| GTK.gtk_notebook_next_page (handle); |
| } else { |
| GTK.gtk_notebook_prev_page (handle); |
| } |
| return true; |
| } |
| |
| } |