| package org.eclipse.swt.widgets; |
| |
| /* |
| * (c) Copyright IBM Corp. 2000, 2001. |
| * All Rights Reserved |
| */ |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gtk.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.events.*; |
| |
| /** |
| * Instances of this class provide a selectable user interface object |
| * that displays a hierarchy of items and issue notificiation when an |
| * item in the hierarchy is selected. |
| * <p> |
| * The item children that may be added to instances of this class |
| * must be of type <code>TreeItem</code>. |
| * </p><p> |
| * Note that although this class is a subclass of <code>Composite</code>, |
| * it does not make sense to add <code>Control</code> children to it, |
| * or set a layout on it. |
| * </p><p> |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>SINGLE, MULTI, CHECK</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>Selection, DefaultSelection, Collapse, Expand</dd> |
| * </dl> |
| * <p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| */ |
| public class Tree extends Composite { |
| TreeItem [] items; |
| boolean selected, doubleSelected; |
| int check, uncheck; |
| static int CELL_SPACING = 1; |
| |
| /* |
| * NOT DONE - These need to be moved to display, |
| * they are not thread safe. Consider moving the |
| * methods that access them to Display. |
| */ |
| static TreeItem [] Items; |
| static int Index, Count, Sibling; |
| |
| /** |
| * 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 |
| * 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 Tree (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| static int checkStyle (int style) { |
| /* |
| * To be compatible with Windows, force the H_SCROLL |
| * and V_SCROLL style bits. On Windows, it is not |
| * possible to create a tree without scroll bars. |
| */ |
| style |= SWT.H_SCROLL | SWT.V_SCROLL; |
| return checkBits (style, SWT.SINGLE, SWT.MULTI, 0, 0, 0, 0); |
| } |
| |
| Point _getClientAreaSize () { |
| return UtilFuncs.getSize(handle); |
| } |
| |
| boolean _setSize(int width, int height) { |
| if (!UtilFuncs.setSize (eventBoxHandle, width, height)) return false; |
| UtilFuncs.setSize (scrolledHandle, width, height); |
| return true; |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the receiver's selection changes, 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. |
| * If the reciever has <code>SWT.CHECK</code> style set and the check selection changes, |
| * the event object detail field contains the value <code>SWT.CHECK</code>. |
| * <code>widgetDefaultSelected</code> is typically called when an item is double-clicked. |
| * </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); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when an item in the receiver is expanded or collapsed |
| * by sending it one of the messages defined in the <code>TreeListener</code> |
| * interface. |
| * |
| * @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 TreeListener |
| * @see #removeTreeListener |
| */ |
| public void addTreeListener(TreeListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Expand, typedListener); |
| addListener (SWT.Collapse, typedListener); |
| } |
| |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| if (wHint == SWT.DEFAULT) wHint = 200; |
| return _computeSize (wHint, hHint, changed); |
| } |
| |
| void configure() { |
| _connectParent(); |
| OS.gtk_container_add(eventBoxHandle, fixedHandle); |
| OS.gtk_fixed_put (fixedHandle, scrolledHandle, (short)0, (short)0); |
| OS.gtk_container_add (scrolledHandle, handle); |
| } |
| |
| void createHandle (int index) { |
| state |= HANDLE; |
| |
| eventBoxHandle = OS.gtk_event_box_new(); |
| if (eventBoxHandle == 0) SWT.error (SWT.ERROR_NO_HANDLES); |
| |
| fixedHandle = OS.gtk_fixed_new (); |
| if (fixedHandle == 0) SWT.error (SWT.ERROR_NO_HANDLES); |
| |
| scrolledHandle = OS.gtk_scrolled_window_new(0,0); |
| if (scrolledHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| |
| handle = OS.gtk_ctree_new (1, 0); |
| if (handle == 0) SWT.error (SWT.ERROR_NO_HANDLES); |
| } |
| |
| int createCheckPixmap(boolean checked) { |
| /* |
| * The box will occupy the whole item width. |
| */ |
| GtkCList clist = new GtkCList (); |
| OS.memmove (clist, handle, GtkCList.sizeof); |
| int check_height = clist.row_height-1; |
| int check_width = check_height; |
| |
| GdkVisual visual = new GdkVisual(); |
| OS.memmove(visual, OS.gdk_visual_get_system(), GdkVisual.sizeof); |
| int pixmap = OS.gdk_pixmap_new(0, check_width, check_height, visual.depth); |
| |
| int gc = OS.gdk_gc_new(pixmap); |
| |
| GdkColor fgcolor = new GdkColor(); |
| fgcolor.pixel = 0xFFFFFFFF; |
| fgcolor.red = (short) 0xFFFF; |
| fgcolor.green = (short) 0xFFFF; |
| fgcolor.blue = (short) 0xFFFF; |
| OS.gdk_gc_set_foreground(gc, fgcolor); |
| OS.gdk_draw_rectangle(pixmap, gc, 1, 0,0, check_width,check_height); |
| |
| fgcolor = new GdkColor(); |
| fgcolor.pixel = 0; |
| fgcolor.red = (short) 0; |
| fgcolor.green = (short) 0; |
| fgcolor.blue = (short) 0; |
| OS.gdk_gc_set_foreground(gc, fgcolor); |
| |
| OS.gdk_draw_line(pixmap, gc, 0,0, 0,check_height-1); |
| OS.gdk_draw_line(pixmap, gc, 0,check_height-1, check_width-1,check_height-1); |
| OS.gdk_draw_line(pixmap, gc, check_width-1,check_height-1, check_width-1,0); |
| OS.gdk_draw_line(pixmap, gc, check_width-1,0, 0,0); |
| |
| /* now the cross check */ |
| if (checked) { |
| OS.gdk_draw_line(pixmap, gc, 0,0, check_width-1,check_height-1); |
| OS.gdk_draw_line(pixmap, gc, 0,check_height-1, check_width-1,0); |
| } |
| |
| OS.gdk_gc_destroy(gc); |
| return pixmap; |
| } |
| |
| void createItem (TreeItem item, int node, int index) { |
| int id = 0; |
| while (id < items.length && items [id] != null) id++; |
| if (id == items.length) { |
| TreeItem [] newItems = new TreeItem [items.length + 4]; |
| System.arraycopy (items, 0, newItems, 0, items.length); |
| items = newItems; |
| } |
| |
| /* Feature in GTK. |
| * When the selection policy is BROWSE (which is what we use for SINGLE), |
| * the first item added gets automatically selected. This leads to some |
| * nontrivial complications which one better avoid. The hack is to |
| * temporarily put a value other than GTK_SELECTION_BROWSE into the |
| * selectionMode field just for the insertion. Do not use the policy |
| * changing API because this will cause a selection callback. |
| */ |
| // GtkCTree ctree = new GtkCTree (); |
| // OS.memmove (ctree, handle, GtkCTree.sizeof); |
| // int selection_mode = ctree.selection_mode; |
| // ctree.selection_mode = OS.GTK_SELECTION_MULTIPLE; |
| // OS.memmove (handle, ctree, GtkCTree.sizeof); |
| int [] sm = new int [1]; |
| OS.memmove (sm, handle+148, 1); |
| int selectionMode = sm[0]; |
| sm [0] = OS.GTK_SELECTION_MULTIPLE; |
| OS.memmove (handle+148, sm, 1); |
| // FIXME |
| int sibling = index == -1 ? 0 : findSibling (node, index); |
| OS.gtk_signal_handler_block_by_data (handle, SWT.Selection); |
| item.handle = OS.gtk_ctree_insert_node (handle, node, sibling, null, (byte) 2, uncheck, 0, uncheck, 0, false, false); |
| OS.gtk_signal_handler_unblock_by_data (handle, SWT.Selection); |
| if (item.handle == 0) error (SWT.ERROR_ITEM_NOT_ADDED); |
| OS.gtk_ctree_node_set_row_data (handle, item.handle, id + 1); |
| |
| // OS.memmove (ctree, handle, GtkCTree.sizeof); |
| // ctree.selection_mode = selection_mode; |
| // OS.memmove (handle, ctree, GtkCTree.sizeof); |
| sm [0] = selectionMode; |
| OS.memmove (handle+148, sm, 1); |
| items [id] = item; |
| } |
| |
| void createWidget (int index) { |
| super.createWidget (index); |
| items = new TreeItem [4]; |
| } |
| |
| /** |
| * Deselects all selected 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 void deselectAll() { |
| checkWidget(); |
| int root = OS.gtk_ctree_node_nth (handle, 0); |
| if (root == 0) return; |
| OS.gtk_signal_handler_block_by_data (handle, SWT.Selection); |
| OS.gtk_ctree_unselect_recursive (handle, root); |
| OS.gtk_signal_handler_unblock_by_data (handle, SWT.Selection); |
| } |
| |
| void destroyItem (TreeItem item) { |
| int node = item.handle; |
| Callback GtkCTreeFunc = new Callback (this, "GtkCTreeDispose", 3); |
| int address = GtkCTreeFunc.getAddress (); |
| OS.gtk_ctree_post_recursive (handle, node, address, 0); |
| GtkCTreeFunc.dispose (); |
| OS.gtk_signal_handler_block_by_data (handle, SWT.Collapse); |
| OS.gtk_ctree_remove_node (handle, node); |
| OS.gtk_signal_handler_unblock_by_data (handle, SWT.Collapse); |
| } |
| |
| int findSibling (int node, int index) { |
| int depth = 1; |
| if (node != 0) { |
| int data = OS.g_list_nth_data (node, 0); |
| GtkCTreeRow row = new GtkCTreeRow (); |
| OS.memmove (row, data, GtkCTreeRow.sizeof); |
| depth = row.level + 1; |
| } |
| Index = 0; |
| Sibling = 0; |
| Callback GtkCTreeCountItems = new Callback (this, "GtkCTreeFindSibling", 3); |
| int address0 = GtkCTreeCountItems.getAddress (); |
| OS.gtk_ctree_post_recursive_to_depth (handle, node, depth, address0, index); |
| GtkCTreeCountItems.dispose (); |
| if (Sibling == node) Sibling = 0; |
| return Sibling; |
| } |
| |
| public boolean forceFocus () { |
| checkWidget (); |
| OS.gtk_signal_handler_block_by_data (handle, SWT.Selection); |
| boolean result = super.forceFocus (); |
| OS.gtk_signal_handler_unblock_by_data (handle, SWT.Selection); |
| return result; |
| } |
| |
| /** |
| * Returns the 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 item at the given point |
| * |
| * @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> |
| */ |
| public TreeItem getItem (Point point) { |
| checkWidget (); |
| int [] row = new int [1], column = new int [1]; |
| int code = OS.gtk_clist_get_selection_info (handle, point.x, point.y, row, column); |
| if (code == 0) return null; |
| int node = OS.gtk_ctree_node_nth (handle, row [0]); |
| int index = OS.gtk_ctree_node_get_row_data (handle, node) - 1; |
| return items [index]; |
| } |
| |
| /** |
| * Returns the number of items contained in the receiver |
| * that are direct item children of the receiver. The |
| * number that is returned is the number of roots in the |
| * tree. |
| * |
| * @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 (); |
| return getItemCount (0); |
| } |
| |
| int getItemCount (int node) { |
| int depth = 1; |
| if (node != 0) { |
| int data = OS.g_list_nth_data (node, 0); |
| GtkCTreeRow row = new GtkCTreeRow (); |
| OS.memmove (row, data, GtkCTreeRow.sizeof); |
| depth = row.level + 1; |
| } |
| Count = 0; |
| Callback GtkCTreeCountItems = new Callback (this, "GtkCTreeCountItems", 3); |
| int address0 = GtkCTreeCountItems.getAddress (); |
| OS.gtk_ctree_post_recursive_to_depth (handle, node, depth, address0, node); |
| GtkCTreeCountItems.dispose (); |
| return Count; |
| } |
| |
| /** |
| * Returns the height of the area which would be used to |
| * display <em>one</em> of the items in the tree. |
| * |
| * @return the height of one 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 getItemHeight () { |
| checkWidget (); |
| GtkCList clist = new GtkCList (); |
| OS.memmove (clist, handle, GtkCList.sizeof); |
| return clist.row_height + CELL_SPACING; |
| } |
| |
| /** |
| * Returns the number of items contained in the receiver |
| * that are direct item children of the receiver. These |
| * are the roots of the tree. |
| * <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 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 TreeItem [] getItems () { |
| checkWidget(); |
| return getItems (0); |
| } |
| |
| TreeItem [] getItems (int node) { |
| int depth = 1; |
| if (node != 0) { |
| int data = OS.g_list_nth_data (node, 0); |
| GtkCTreeRow row = new GtkCTreeRow (); |
| OS.memmove (row, data, GtkCTreeRow.sizeof); |
| depth = row.level + 1; |
| } |
| Count = 0; |
| Callback GtkCTreeCountItems = new Callback (this, "GtkCTreeCountItems", 3); |
| int address0 = GtkCTreeCountItems.getAddress (); |
| OS.gtk_ctree_post_recursive_to_depth (handle, node, depth, address0, node); |
| GtkCTreeCountItems.dispose (); |
| Items = new TreeItem [Count]; |
| Count = 0; |
| Callback GtkCTreeGetItems = new Callback (this, "GtkCTreeGetItems", 3); |
| int address1 = GtkCTreeGetItems.getAddress (); |
| OS.gtk_ctree_post_recursive_to_depth (handle, node, depth, address1, node); |
| GtkCTreeGetItems.dispose (); |
| TreeItem [] result = Items; |
| Items = null; |
| return result; |
| } |
| |
| /** |
| * Returns the receiver's parent item, which must be a |
| * <code>TreeItem</code> or null when the receiver is a |
| * root. |
| * |
| * @return the receiver's parent 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 TreeItem getParentItem () { |
| checkWidget (); |
| return null; |
| } |
| |
| /** |
| * Returns an array of <code>TreeItem</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 TreeItem[] getSelection () { |
| checkWidget(); |
| GtkCList clist = new GtkCList(); |
| OS.memmove (clist, handle, GtkCList.sizeof); |
| if (clist.selection == 0) return new TreeItem [0]; |
| int length = OS.g_list_length (clist.selection); |
| TreeItem [] result = new TreeItem [length]; |
| for (int i=0; i<length; i++) { |
| int node = OS.g_list_nth_data (clist.selection, i); |
| int index = OS.gtk_ctree_node_get_row_data (handle, node) - 1; |
| result [i] = items [index]; |
| } |
| return result; |
| } |
| |
| /** |
| * Returns the number of selected items contained in the receiver. |
| * |
| * @return the number of selected 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 getSelectionCount () { |
| checkWidget(); |
| GtkCList clist = new GtkCList (); |
| OS.memmove (clist, handle, GtkCList.sizeof); |
| if (clist.selection == 0) return 0; |
| return OS.g_list_length (clist.selection); |
| } |
| |
| int GtkCTreeCountItems (int ctree, int node, int data) { |
| if (data != node) Count++; |
| return 0; |
| } |
| |
| int GtkCTreeFindSibling (int ctree, int node, int data) { |
| if (Index == -1) return 0; |
| Index = data == Index ? -1 : Index + 1; |
| Sibling = node; |
| return 0; |
| } |
| |
| int GtkCTreeGetItems (int ctree, int node, int data) { |
| if (data != node) { |
| int index = OS.gtk_ctree_node_get_row_data (ctree, node) - 1; |
| Items [Count++] = items [index]; |
| } |
| return 0; |
| } |
| |
| int GtkCTreeDispose (int ctree, int node, int data) { |
| int index = OS.gtk_ctree_node_get_row_data (ctree, node) - 1; |
| OS.gtk_ctree_node_set_row_data (ctree, node, 0); |
| TreeItem item = items [index]; |
| item.releaseWidget (); |
| item.releaseHandle (); |
| items [index] = null; |
| return 0; |
| } |
| |
| void hookEvents () { |
| //TO DO - get rid of enter/exit for mouse crossing border |
| super.hookEvents (); |
| signal_connect (handle, "tree_select_row", SWT.Selection, 4); |
| signal_connect (handle, "tree_unselect_row", SWT.Selection, 4); |
| signal_connect (handle, "tree_expand", SWT.Expand, 3); |
| signal_connect (handle, "tree_collapse", SWT.Collapse, 3); |
| } |
| |
| int topHandle() { return eventBoxHandle; } |
| int parentingHandle() { return fixedHandle; } |
| |
| boolean isMyHandle(int h) { |
| if (h==fixedHandle) return true; |
| if (h==scrolledHandle) return true; |
| if (h==handle) return true; |
| return false; |
| } |
| |
| int processCollapse (int int0, int int1, int int2) { |
| int index = OS.gtk_ctree_node_get_row_data (handle, int0) - 1; |
| Event event = new Event (); |
| event.item = items [index]; |
| /* |
| * This code is intentionally commented. |
| * Not yet sure if freezing improves the |
| * look when a tree is collapsed. |
| */ |
| // OS.gtk_clist_freeze (handle); |
| sendEvent (SWT.Collapse, event); |
| // OS.gtk_clist_thaw (handle); |
| return 0; |
| } |
| |
| int processExpand (int int0, int int1, int int2) { |
| int index = OS.gtk_ctree_node_get_row_data (handle, int0) - 1; |
| Event event = new Event (); |
| event.item = items [index]; |
| OS.gtk_clist_freeze (handle); |
| sendEvent (SWT.Expand, event); |
| OS.gtk_clist_thaw (handle); |
| boolean [] expanded = new boolean [1]; |
| OS.gtk_ctree_get_node_info (handle, int0, null, null, null, null, null, null, null, expanded); |
| if (!expanded [0]) { |
| OS.gtk_signal_handler_block_by_data (handle, SWT.Expand); |
| OS.gtk_ctree_expand (handle, int0); |
| OS.gtk_signal_handler_unblock_by_data (handle, SWT.Expand); |
| } |
| return 0; |
| } |
| |
| int processMouseDown (int callData, int arg1, int int2) { |
| doubleSelected = false; |
| int result = super.processMouseDown (callData, arg1, int2); |
| if ((style & SWT.MULTI) != 0) selected = true; |
| GdkEventButton gdkEvent = new GdkEventButton (); |
| OS.memmove (gdkEvent, callData, GdkEventButton.sizeof); |
| int x = (int) gdkEvent.x, y = (int) gdkEvent.y; |
| if ((style & SWT.CHECK) != 0) { |
| if (!OS.gtk_ctree_is_hot_spot (handle, x, y)) { |
| int [] row = new int [1], column = new int [1]; |
| int code = OS.gtk_clist_get_selection_info (handle, x, y, row, column); |
| if (code != 0) { |
| int node = OS.gtk_ctree_node_nth (handle, row [0]); |
| int crow = OS.g_list_nth_data (node, 0); |
| GtkCTreeRow row_data = new GtkCTreeRow (); |
| OS.memmove (row_data, crow, GtkCTreeRow.sizeof); |
| GtkCTree ctree = new GtkCTree(); |
| OS.memmove (ctree, handle, GtkCTree.sizeof); |
| int nX = ctree.hoffset + ctree.tree_indent * row_data.level - 2; |
| int nY = ctree.voffset + (ctree.row_height + 1) * row [0] + 2; |
| int [] unused = new int [1], check_width = new int [1], check_height = new int [1]; |
| OS.gdk_window_get_geometry (check, unused, unused, check_width, check_height, unused); |
| if (nX <= x && x <= nX + check_width [0]) { |
| if (nY <= y && y <= nY + check_height [0]) { |
| byte [] spacing = new byte [1]; |
| boolean [] is_leaf = new boolean [1], expanded = new boolean [1]; |
| int [] pixmap = new int [1], mask = new int [1]; |
| int index = OS.gtk_ctree_node_get_row_data (handle, node) - 1; |
| byte [] text = Converter.wcsToMbcs (null, items [index].getText (), true); |
| OS.gtk_ctree_get_node_info (handle, node, null, spacing, pixmap, mask, pixmap, mask, is_leaf, expanded); |
| pixmap [0] = pixmap [0] == check ? uncheck : check; |
| OS.gtk_ctree_set_node_info (handle, node, text, spacing [0], pixmap [0], mask [0], pixmap [0], mask [0], is_leaf [0], expanded [0]); |
| Event event = new Event (); |
| event.detail = SWT.CHECK; |
| event.item = items [index]; |
| postEvent (SWT.Selection, event); |
| } |
| } |
| } |
| } |
| } |
| if (gdkEvent.type == OS.GDK_2BUTTON_PRESS) { |
| if (!OS.gtk_ctree_is_hot_spot (handle, x, y)) { |
| int [] row = new int [1], column = new int [1]; |
| int code = OS.gtk_clist_get_selection_info (handle, x, y, row, column); |
| if (code != 0) doubleSelected = true; |
| } |
| } |
| return result; |
| } |
| |
| int processMouseUp (int callData, int arg1, int int2) { |
| int result = super.processMouseUp (callData, arg1, int2); |
| /* |
| * Feature in GTK. When an item is reselected in a |
| * mulit-select tree, GTK does not issue notification. |
| * The fix is to detect that the mouse was released over |
| * a selected item when no selection signal was set and |
| * issue a fake selection event. |
| * |
| * Feature in GTK. Double selection can only be implemented |
| * in a mouse up handler for a tree unlike the list,the event |
| * that caused the select signal is not included when the select |
| * signal is issued. |
| */ |
| GdkEventButton gdkEvent = new GdkEventButton (); |
| OS.memmove (gdkEvent, callData, GdkEventButton.sizeof); |
| int x = (int) gdkEvent.x, y = (int) gdkEvent.y; |
| if (!OS.gtk_ctree_is_hot_spot (handle, x, y)) { |
| if ((style & SWT.SINGLE) != 0) { |
| GtkCList clist = new GtkCList (); |
| OS.memmove(clist, handle, GtkCList.sizeof); |
| int list = clist.selection; |
| if (list != 0 && OS.g_list_length (list) != 0) { |
| int node = OS.g_list_nth_data (list, 0); |
| int index = OS.gtk_ctree_node_get_row_data (handle, node) - 1; |
| Event event = new Event (); |
| event.item = items [index]; |
| if (doubleSelected) { |
| postEvent (SWT.DefaultSelection, event); |
| } else { |
| postEvent (SWT.Selection, event); |
| } |
| } |
| selected = false; |
| } |
| if ((style & SWT.MULTI) != 0) { |
| int [] row = new int [1], column = new int [1]; |
| int code = OS.gtk_clist_get_selection_info (handle, x, y, row, column); |
| if (code != 0) { |
| int focus = OS.gtk_ctree_node_nth (handle, row [0]); |
| GtkCList clist = new GtkCList (); |
| OS.memmove (clist, handle, GtkCList.sizeof); |
| if (selected && clist.selection != 0) { |
| int length = OS.g_list_length (clist.selection); |
| for (int i=0; i<length; i++) { |
| int node = OS.g_list_nth_data (clist.selection, i); |
| if (node == focus) { |
| int index = OS.gtk_ctree_node_get_row_data (handle, node) - 1; |
| Event event = new Event (); |
| event.item = items [index]; |
| if (doubleSelected) { |
| postEvent (SWT.DefaultSelection, event); |
| } else { |
| postEvent (SWT.Selection, event); |
| } |
| } |
| } |
| } |
| } |
| selected = false; |
| } |
| } |
| doubleSelected = false; |
| return result; |
| } |
| |
| int processSelection (int int0, int int1, int int2) { |
| if ((style & SWT.SINGLE) != 0) { |
| selected = true; |
| return 0; |
| } |
| GtkCList clist = new GtkCList (); |
| OS.memmove (clist, handle, GtkCList.sizeof); |
| int focus = OS.gtk_ctree_node_nth (handle, clist.focus_row); |
| if (focus != int0) return 0; |
| if ((style & SWT.MULTI) != 0) selected = false; |
| int index = OS.gtk_ctree_node_get_row_data (handle, int0) - 1; |
| Event event = new Event (); |
| event.item = items [index]; |
| postEvent (SWT.Selection, event); |
| return 0; |
| } |
| |
| void releaseWidget () { |
| for (int i=0; i<items.length; i++) { |
| TreeItem item = items [i]; |
| if (item != null && !item.isDisposed ()) { |
| item.releaseWidget (); |
| item.releaseHandle (); |
| } |
| } |
| items = null; |
| if (check != 0) OS.gdk_pixmap_unref (check); |
| if (uncheck != 0) OS.gdk_pixmap_unref (uncheck); |
| check = uncheck = 0; |
| super.releaseWidget (); |
| } |
| |
| /** |
| * Removes all of the items from the receiver. |
| * <p> |
| * @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 removeAll () { |
| checkWidget (); |
| OS.gtk_ctree_remove_node (handle, 0); |
| for (int i=0; i<items.length; i++) { |
| TreeItem item = items [i]; |
| if (item != null && !item.isDisposed ()) { |
| item.releaseWidget (); |
| item.releaseHandle (); |
| } |
| } |
| items = new TreeItem [4]; |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the receiver's selection changes. |
| * |
| * @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); |
| eventTable.unhook (SWT.Selection, listener); |
| eventTable.unhook (SWT.DefaultSelection, listener); |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when items in the receiver are expanded or collapsed.. |
| * |
| * @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 TreeListener |
| * @see #addTreeListener |
| */ |
| public void removeTreeListener(TreeListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Expand, listener); |
| eventTable.unhook (SWT.Collapse, listener); |
| } |
| |
| /** |
| * Selects all 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 void selectAll () { |
| checkWidget(); |
| int root = OS.gtk_ctree_node_nth (handle, 0); |
| if (root == 0) return; |
| OS.gtk_signal_handler_block_by_data (handle, SWT.Selection); |
| OS.gtk_ctree_select_recursive (handle, root); |
| OS.gtk_signal_handler_unblock_by_data (handle, SWT.Selection); |
| } |
| |
| void setHandleStyle () { |
| int mode = (style & SWT.MULTI) != 0 ? OS.GTK_SELECTION_EXTENDED : OS.GTK_SELECTION_BROWSE; |
| OS.gtk_clist_set_selection_mode (handle, mode); |
| } |
| |
| /** |
| * 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 array of items is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if one of the item 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> |
| * |
| * @see Tree#deselectAll() |
| */ |
| public void setSelection (TreeItem [] items) { |
| checkWidget(); |
| if (items == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int root = OS.gtk_ctree_node_nth (handle, 0); |
| if (root == 0) return; |
| OS.gtk_signal_handler_block_by_data (handle, SWT.Selection); |
| OS.gtk_ctree_unselect_recursive (handle, root); |
| int index = 0, length = items.length; |
| while (index < length) { |
| TreeItem item = items [index]; |
| if (item != null) { |
| if (item.isDisposed ()) break; |
| OS.gtk_ctree_select (handle, item.handle); |
| } |
| index++; |
| } |
| OS.gtk_signal_handler_unblock_by_data (handle, SWT.Selection); |
| if (index != length) error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| |
| void showHandle() { |
| OS.gtk_widget_show (eventBoxHandle); |
| OS.gtk_widget_show (fixedHandle); |
| OS.gtk_widget_show (scrolledHandle); |
| OS.gtk_widget_show (handle); |
| OS.gtk_widget_realize (handle); |
| |
| if ((style & SWT.CHECK) != 0) { |
| uncheck = createCheckPixmap(false); |
| check = createCheckPixmap(true); |
| } |
| } |
| |
| /** |
| * Shows the selection. If the selection is already showing in the receiver, |
| * this method simply returns. Otherwise, the items are scrolled until |
| * the selection is visible. |
| * |
| * @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 Tree#showItem(TreeItem) |
| */ |
| public void showSelection () { |
| checkWidget(); |
| GtkCList clist = new GtkCList (); |
| OS.memmove(clist, handle, GtkCList.sizeof); |
| if (clist.selection == 0) return; |
| if (OS.g_list_length (clist.selection) == 0) return; |
| int node = OS.g_list_nth_data (clist.selection, 0); |
| int index = OS.gtk_ctree_node_get_row_data (handle, node) - 1; |
| showItem (items [index]); |
| } |
| |
| /** |
| * Shows the item. If the item is already showing in the receiver, |
| * this method simply returns. Otherwise, the items are scrolled |
| * and expanded until the item is visible. |
| * |
| * @param item the item to be shown |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the item is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the item 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> |
| * |
| * @see Tree#showSelection() |
| */ |
| public void showItem (TreeItem item) { |
| checkWidget (); |
| if (item == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (item.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT); |
| int node = item.handle; |
| int visibility = OS.gtk_ctree_node_is_visible (handle, node); |
| if (visibility != OS.GTK_VISIBILITY_NONE) return; |
| if (!OS.gtk_ctree_is_viewable (handle, node)) { |
| int parent = node; |
| GtkCTreeRow row = new GtkCTreeRow (); |
| OS.gtk_signal_handler_block_by_data (handle, SWT.Expand); |
| do { |
| int data = OS.g_list_nth_data (parent, 0); |
| OS.memmove (row, data, GtkCTreeRow.sizeof); |
| if ((parent = row.parent) == 0) break; |
| OS.gtk_ctree_expand (handle, parent); |
| } while (true); |
| OS.gtk_signal_handler_unblock_by_data (handle, SWT.Expand); |
| } |
| OS.gtk_ctree_node_moveto (handle, node, 0, 0.0f, 0.0f); |
| } |
| |
| } |