Mercurial > projects > dwt-mac
view dwt/widgets/TabFolder.d @ 3:649b8e223d5a
fix extends
author | Frank Benoit <benoit@tionex.de> |
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date | Wed, 27 Aug 2008 13:48:25 +0200 |
parents | 380af2bdd8e5 |
children | 1a8b3cb347e0 |
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/******************************************************************************* * Copyright (c) 2000, 2007 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 *******************************************************************************/ module dwt.widgets.TabFolder; import dwt.dwthelper.utils; import dwt.DWT; import dwt.DWTException; import dwt.events.SelectionEvent; import dwt.events.SelectionListener; import dwt.graphics.Point; import dwt.graphics.Rectangle; import dwt.internal.cocoa.NSFont; import dwt.internal.cocoa.NSPoint; import dwt.internal.cocoa.NSRect; import dwt.internal.cocoa.NSSize; import dwt.internal.cocoa.NSTabView; import dwt.internal.cocoa.NSTabViewItem; import dwt.internal.cocoa.OS; import dwt.internal.cocoa.SWTTabView; /** * 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> */ public class TabFolder : Composite { TabItem [] items; int itemCount; /** * 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>DWT</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>DWT</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 DWTException <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 DWT * @see Widget#checkSubclass * @see Widget#getStyle */ public TabFolder (Composite parent, int style) { super (parent, checkStyle (style)); } /** * 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 DWTException <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 is null) error (DWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener (listener); addListener (DWT.Selection,typedListener); addListener (DWT.DefaultSelection,typedListener); } static int checkStyle (int style) { style = checkBits (style, DWT.TOP, DWT.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 DWT style. */ return style & ~(DWT.H_SCROLL | DWT.V_SCROLL); } protected void checkSubclass () { if (!isValidSubclass ()) error (DWT.ERROR_INVALID_SUBCLASS); } public Point computeSize (int wHint, int hHint, bool changed) { Point size = super.computeSize (wHint, hHint, changed); if (wHint is DWT.DEFAULT && items.length > 0) { NSSize mimSize = ((NSTabView)view).minimumSize(); Rectangle trim = computeTrim (0, 0, (int)mimSize.width, 0); size.x = Math.max (trim.width, size.x); } return size; } public Rectangle computeTrim (int x, int y, int width, int height) { checkWidget (); // CGRect oldBounds = new CGRect (), bounds = oldBounds; // OS.HIViewGetFrame (handle, oldBounds); // int MIN_SIZE = 100; // if (oldBounds.width < MIN_SIZE || oldBounds.height < MIN_SIZE) { // OS.HIViewSetDrawingEnabled (handle, false); // bounds = new CGRect (); // bounds.width = bounds.height = 100; // OS.HIViewSetFrame (handle, bounds); // } // Rect client = new Rect (); // OS.GetTabContentRect (handle, client); // if (oldBounds.width < MIN_SIZE || oldBounds.height < MIN_SIZE) { // OS.HIViewSetFrame (handle, oldBounds); // OS.HIViewSetDrawingEnabled (handle, drawCount is 0); // } // x -= client.left; // y -= client.top; // width += (int) bounds.width - (client.right - client.left); // height += (int) bounds.height - (client.bottom - client.top); // Rect inset = getInset (); // x -= inset.left; // y -= inset.top; // width += inset.left + inset.right; // height += inset.top + inset.bottom; // return new Rectangle (-client.left, -client.top, width, height); return super.computeTrim(x, y, width, height); } void createHandle () { SWTTabView widget = (SWTTabView)new SWTTabView().alloc(); widget.initWithFrame (new NSRect()); widget.setTag(jniRef); widget.setDelegate(widget); if ((style & DWT.BOTTOM) !is 0) { widget.setTabViewType(OS.NSBottomTabsBezelBorder); } view = widget; parent.contentView().addSubview_(view); } void createItem (TabItem item, int index) { int count = itemCount; if (!(0 <= index && index <= count)) error (DWT.ERROR_INVALID_RANGE); if (count is items.length) { TabItem [] newItems = new TabItem [items.length + 4]; System.arraycopy (items, 0, newItems, 0, items.length); items = newItems; } System.arraycopy (items, index, items, index + 1, count - index); items [index] = item; itemCount++; NSTabViewItem nsItem = (NSTabViewItem)new NSTabViewItem().alloc().init(); item.nsItem = nsItem; ((NSTabView)view).insertTabViewItem(nsItem, index); } void createWidget () { super.createWidget (); items = new TabItem [4]; } void destroyItem (TabItem item) { int count = itemCount; int index = 0; while (index < count) { if (items [index] is item) break; index++; } if (index is count) return; --count; System.arraycopy (items, index + 1, items, index, count - index); items [count] = null; if (count is 0) { items = new TabItem [4]; } itemCount = count; ((NSTabView)view).removeTabViewItem(item.nsItem); } public Rectangle getClientArea () { checkWidget (); NSRect rect = ((NSTabView)view).contentRect(); int x = Math.max (0, (int)rect.x); int y = Math.max (0, (int)rect.y); int width = Math.max (0, (int)rect.width); int height = Math.max (0, (int)rect.height); return new Rectangle (x, y, width, height); } /** * 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 DWTException <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 (); int count = itemCount; if (!(0 <= index && index < count)) error (DWT.ERROR_INVALID_RANGE); return items [index]; } public TabItem getItem (Point point) { checkWidget (); if (point is null) error (DWT.ERROR_NULL_ARGUMENT); NSPoint nsPoint = new NSPoint (); nsPoint.x = point.x; nsPoint.y = point.y; NSTabView tabView = (NSTabView) view; NSTabViewItem tabViewItem = tabView.tabViewItemAtPoint (nsPoint); for (int i = 0; i < itemCount; i++) { NSTabViewItem item = items[i].nsItem; if (item.isEqual (tabViewItem)) { return items [i]; } } return null; } /** * Returns the number of items contained in the receiver. * * @return the number of items * * @exception DWTException <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 (); 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 DWTException <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 = itemCount; 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 DWTException <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 = getSelectionIndex (); if (index is -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 DWTException <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 (); NSTabViewItem selected = ((NSTabView)view).selectedTabViewItem(); if (selected is null) return -1; for (int i = 0; i < itemCount; i++) { if (items[i].nsItem.id is selected.id) return i; } return -1; } /** * 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 DWTException <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 is null) error (DWT.ERROR_NULL_ARGUMENT); int count = itemCount; for (int i=0; i<count; i++) { if (items [i] is item) return i; } return -1; } Point minimumSize (int wHint, int hHint, bool 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 = itemCount; while (index < count) { if (items [index].control is child) break; index++; } if (index is count) { Rectangle rect = child.getBounds (); width = Math.max (width, rect.x + rect.width); height = Math.max (height, rect.y + rect.height); } else { Point size = child.computeSize (wHint, hHint, flushCache); width = Math.max (width, size.x); height = Math.max (height, size.y); } } return new Point (width, height); } void releaseChildren (bool destroy) { if (items !is null) { for (int i=0; i<items.length; i++) { TabItem item = items [i]; if (item !is null && !item.isDisposed ()) { item.release (false); } } items = null; } super.releaseChildren (destroy); } void removeControl (Control control) { super.removeControl (control); int count = itemCount; for (int i=0; i<count; i++) { TabItem item = items [i]; if (item.control is 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 DWTException <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 is null) error (DWT.ERROR_NULL_ARGUMENT); if (eventTable is null) return; eventTable.unhook (DWT.Selection, listener); eventTable.unhook (DWT.DefaultSelection,listener); } int setBounds (int x, int y, int width, int height, bool move, bool resize) { int result = super.setBounds(x, y, width, height, move, resize); if ((result & RESIZED) !is 0) { int index = getSelectionIndex (); if (index !is -1) { TabItem item = items [index]; Control control = item.control; if (control !is null && !control.isDisposed ()) { control.setBounds (getClientArea ()); } } } return result; } void setFont (NSFont font) { ((NSTabView)view).setFont(font); } /** * 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 DWTException <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) { checkWidget (); if (item is null) error (DWT.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 DWTException <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 is null) error (DWT.ERROR_NULL_ARGUMENT); if (items.length is 0) { setSelection (-1, false, false); } else { for (int i=items.length - 1; i>=0; --i) { int index = indexOf (items [i]); if (index !is -1) setSelection (index, false, false); } } } /** * 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 DWTException <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 (); int count = itemCount; if (!(0 <= index && index < count)) return; setSelection (index, false, false); } void setSelection (int index, bool notify, bool force) { if (index >= itemCount) return; int currentIndex = getSelectionIndex (); if (!force && currentIndex is index) return; if (currentIndex !is -1) { TabItem item = items [currentIndex]; if (item !is null) { Control control = item.control; if (control !is null && !control.isDisposed ()) { control.setVisible (false); } } } ((NSTabView)view).selectTabViewItemAtIndex(index); index = getSelectionIndex(); if (index !is -1) { TabItem item = items [index]; if (item !is null) { Control control = item.control; if (control !is null && !control.isDisposed ()) { control.setBounds (getClientArea ()); control.setVisible (true); } if (notify) { Event event = new Event (); event.item = item; sendEvent (DWT.Selection, event); } } } } bool traversePage (bool next) { int count = getItemCount (); if (count is 0) return false; int index = getSelectionIndex (); if (index is -1) { index = 0; } else { int offset = (next) ? 1 : -1; index = (index + offset + count) % count; } setSelection (index, true, false); return index is getSelectionIndex (); } void willSelectTabViewItem(int tabView, int tabViewItem) { if (tabViewItem is 0) return; for (int i = 0; i < itemCount; i++) { TabItem item = items [i]; if (item.nsItem.id is tabViewItem) { int currentIndex = getSelectionIndex (); if (currentIndex !is -1) { TabItem selected = items [currentIndex]; if (selected !is null) { Control control = selected.control; if (control !is null && !control.isDisposed ()) { control.setVisible (false); } } } Control control = item.control; if (control !is null && !control.isDisposed ()) { control.setBounds (getClientArea ()); control.setVisible (true); } Event event = new Event (); event.item = item; sendEvent (DWT.Selection, event); } } } }