| package org.eclipse.swt.widgets; |
| |
| /* |
| * Copyright (c) 2000, 2002 IBM Corp. All rights reserved. |
| * This file is made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| */ |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gtk.*; |
| import org.eclipse.swt.graphics.*; |
| 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> |
| * Note: Only one of the styles SINGLE and MULTI may be specified. |
| * </p><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, imageHeight, timerID; |
| 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 |
| * 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#SINGLE |
| * @see SWT#MULTI |
| * @see SWT#CHECK |
| * @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); |
| } |
| |
| /** |
| * 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. |
| * The item field of the event object is valid for default selection, but the detail field is not used. |
| * </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 computeNativeSize (scrolledHandle, wHint, hHint, changed); |
| } |
| |
| void createHandle (int index) { |
| state |= HANDLE; |
| fixedHandle = OS.gtk_fixed_new (); |
| if (fixedHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| OS.gtk_fixed_set_has_window (fixedHandle, true); |
| 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 parentHandle = parent.parentingHandle (); |
| OS.gtk_container_add (parentHandle, fixedHandle); |
| OS.gtk_container_add (fixedHandle, scrolledHandle); |
| OS.gtk_container_add (scrolledHandle, handle); |
| OS.gtk_widget_show (fixedHandle); |
| OS.gtk_widget_show (scrolledHandle); |
| OS.gtk_widget_show (handle); |
| |
| /* Force row_height to be computed */ |
| OS.gtk_clist_set_row_height (handle, 0); |
| |
| /* Single or Multiple Selection */ |
| int mode = (style & SWT.MULTI) != 0 ? OS.GTK_SELECTION_EXTENDED : OS.GTK_SELECTION_BROWSE; |
| OS.gtk_clist_set_selection_mode (handle, mode); |
| |
| /* Scrolling policy */ |
| int hsp = (style & SWT.H_SCROLL) != 0 ? OS.GTK_POLICY_AUTOMATIC : OS.GTK_POLICY_NEVER; |
| int vsp = (style & SWT.V_SCROLL) != 0 ? OS.GTK_POLICY_AUTOMATIC : OS.GTK_POLICY_NEVER; |
| OS.gtk_scrolled_window_set_policy (scrolledHandle, hsp, vsp); |
| |
| if ((style & SWT.CHECK) != 0) { |
| OS.gtk_widget_realize (handle); |
| uncheck = createCheckPixmap (false); |
| check = createCheckPixmap (true); |
| } |
| } |
| |
| void hookEvents () { |
| //TO DO - get rid of enter/exit for mouse crossing border |
| super.hookEvents (); |
| Display display = getDisplay (); |
| int windowProc3 = display.windowProc3; |
| int windowProc4 = display.windowProc4; |
| OS.g_signal_connect (handle, OS.tree_select_row, windowProc4, SWT.Selection); |
| OS.g_signal_connect (handle, OS.tree_unselect_row, windowProc4, SWT.Selection); |
| OS.g_signal_connect (handle, OS.tree_expand, windowProc3, SWT.Expand); |
| OS.g_signal_connect (handle, OS.tree_collapse, windowProc3, SWT.Collapse); |
| OS.g_signal_connect (handle, OS.event_after, windowProc3, 0); |
| } |
| |
| int createCheckPixmap(boolean checked) { |
| /* |
| * The box will occupy the whole item width. |
| */ |
| int check_height = OS.GTK_CLIST_ROW_HEIGHT (handle) - 2; |
| int check_width = check_height; |
| |
| GdkVisual visual = new GdkVisual(); |
| OS.memmove(visual, OS.gdk_visual_get_system()); |
| 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.g_object_unref(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; |
| } |
| int sibling = index == -1 ? 0 : findSibling (node, index); |
| if (OS.GTK_WIDGET_MAPPED (handle) && timerID == 0) { |
| OS.gtk_clist_freeze (handle); |
| Display display = getDisplay (); |
| timerID = OS.gtk_timeout_add (0, display.windowTimerProc, handle); |
| } |
| blockSignal (handle, SWT.Selection); |
| item.handle = OS.gtk_ctree_insert_node (handle, node, sibling, null, (byte) 2, uncheck, 0, uncheck, 0, false, false); |
| if ((style & SWT.SINGLE) != 0 && OS.GTK_CLIST_ROWS (handle) == 1) { |
| OS.gtk_clist_unselect_row (handle, 0, 0); |
| } |
| unblockSignal (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); |
| items [id] = item; |
| } |
| |
| void createWidget (int index) { |
| super.createWidget (index); |
| items = new TreeItem [4]; |
| } |
| |
| GdkColor defaultBackground () { |
| Display display = getDisplay (); |
| return display.COLOR_LIST_BACKGROUND; |
| } |
| |
| GdkColor defaultForeground () { |
| Display display = getDisplay (); |
| return display.COLOR_LIST_FOREGROUND; |
| } |
| |
| /** |
| * 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(); |
| blockSignal (handle, SWT.Selection); |
| if ((style & SWT.SINGLE) != 0) { |
| int selection = OS.GTK_CLIST_SELECTION (handle); |
| if (selection != 0 && OS.g_list_length (selection) > 0) { |
| int index = OS.GTK_CLIST_FOCUS_ROW (handle); |
| if (index == -1) index = 0; |
| OS.gtk_clist_select_row (handle, index, 0); |
| OS.gtk_clist_unselect_row (handle, index, 0); |
| } |
| } else { |
| OS.gtk_ctree_unselect_recursive (handle, 0); |
| } |
| unblockSignal (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 (); |
| blockSignal (handle, SWT.Collapse); |
| boolean fixSelection = false; |
| if ((style & SWT.SINGLE) != 0) { |
| int selection = OS.GTK_CLIST_SELECTION (handle); |
| fixSelection = selection == 0 || OS.g_list_length (selection) == 0; |
| } |
| if (fixSelection) blockSignal (handle, SWT.Selection); |
| OS.gtk_ctree_remove_node (handle, node); |
| if (fixSelection) { |
| OS.gtk_clist_unselect_row (handle, 0, 0); |
| unblockSignal (handle, SWT.Selection); |
| } |
| unblockSignal (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; |
| } |
| |
| GdkColor getBackgroundColor () { |
| return getBaseColor (); |
| } |
| |
| /** |
| * 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]; |
| if (OS.gtk_clist_get_selection_info (handle, point.x, point.y, row, column) == 0) { |
| return null; |
| } |
| int node = OS.gtk_ctree_node_nth (handle, row [0]); |
| if (node == 0) return null; |
| int index = OS.gtk_ctree_node_get_row_data (handle, node) - 1; |
| if (index == -1) return null; |
| 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 (); |
| return OS.GTK_CLIST_ROW_HEIGHT (handle) + 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(); |
| int selection = OS.GTK_CLIST_SELECTION (handle); |
| if (selection == 0) return new TreeItem [0]; |
| int length = OS.g_list_length (selection); |
| TreeItem [] result = new TreeItem [length]; |
| for (int i=0; i<length; i++) { |
| int node = OS.g_list_nth_data (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(); |
| int selection = OS.GTK_CLIST_SELECTION (handle); |
| if (selection == 0) return 0; |
| return OS.g_list_length (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; |
| if (Index == data) { |
| Sibling = node; |
| Index = -1; |
| } else { |
| Index++; |
| } |
| 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]; |
| if (item != null && !item.isDisposed ()) item.releaseResources (); |
| items [index] = null; |
| return 0; |
| } |
| |
| int paintWindow () { |
| OS.gtk_widget_realize (handle); |
| return OS.GTK_CLIST_CLIST_WINDOW (handle); |
| } |
| |
| 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 processKeyDown (int callData, int arg1, int int2) { |
| int result = super.processKeyDown (callData, arg1, int2); |
| if (result != 0) return result; |
| |
| /* |
| * Feature in GTK. When an item is reselected using |
| * the space bar or default selected using the return key, |
| * GTK does not issue notification. The fix is to ignore the |
| * notification that is sent by GTK and look for the space key. |
| */ |
| GdkEventKey keyEvent = new GdkEventKey (); |
| OS.memmove (keyEvent, callData, GdkEventKey.sizeof); |
| int key = keyEvent.keyval; |
| switch (key) { |
| case OS.GDK_Return: |
| case OS.GDK_KP_Enter: |
| case OS.GDK_space: { |
| int focus_row = OS.GTK_CLIST_FOCUS_ROW (handle); |
| if (focus_row != -1) { |
| int focus = OS.gtk_ctree_node_nth (handle, focus_row); |
| TreeItem item = null; |
| if (focus != 0) { |
| int index = OS.gtk_ctree_node_get_row_data (handle, focus) - 1; |
| item = items [index]; |
| } |
| if (key == OS.GDK_space && (style & SWT.CHECK) != 0) { |
| if (item != null) item.setChecked (!item.getChecked ()); |
| } |
| Event event = new Event (); |
| event.item = item; |
| int type = key == OS.GDK_space ? SWT.Selection : SWT.DefaultSelection; |
| postEvent (type, event); |
| if (key == OS.GDK_space && (style & SWT.CHECK) != 0) { |
| event = new Event (); |
| event.item = item; |
| event.detail = SWT.CHECK; |
| postEvent (SWT.Selection, event); |
| } |
| } |
| break; |
| } |
| } |
| return result; |
| } |
| |
| int processEvent (int eventNumber, int int0, int int1, int int2) { |
| if (eventNumber == 0) { |
| GdkEvent gdkEvent = new GdkEvent (); |
| OS.memmove (gdkEvent, int0, GdkEvent.sizeof); |
| int type = gdkEvent.type; |
| switch (type) { |
| case OS.GDK_BUTTON_PRESS: |
| case OS.GDK_2BUTTON_PRESS: { |
| OS.GTK_CLIST_RESYNC_SELECTION (handle); |
| |
| /* |
| * Feature in GTK. Double selection can only be implemented |
| * in a mouse down handler for a tree unlike the list, the event |
| * that caused the select signal is not included when the select |
| * signal is issued. |
| */ |
| if (type == OS.GDK_2BUTTON_PRESS) { |
| doubleSelected = true; |
| double[] px = new double [1], py = new double [1]; |
| OS.gdk_event_get_coords (int0, px, py); |
| int x = (int)(px[0]), y = (int)(py[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 index = OS.gtk_ctree_node_get_row_data (handle, node) - 1; |
| Event event = new Event (); |
| event.item = items [index]; |
| postEvent (SWT.DefaultSelection, event); |
| } |
| } |
| } |
| break; |
| } |
| case OS.GDK_BUTTON_RELEASE: { |
| /* |
| * Feature in GTK. When an item is reselected in a |
| * multi-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. |
| */ |
| if ((style & SWT.MULTI) != 0) { |
| if (selected && !doubleSelected) { |
| double[] px = new double [1], py = new double [1]; |
| OS.gdk_event_get_coords (int0, px, py); |
| int x = (int)(px[0]), y = (int)(py[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 focus = OS.gtk_ctree_node_nth (handle, row [0]); |
| int selection = OS.GTK_CLIST_SELECTION (handle); |
| if (selection != 0) { |
| int length = OS.g_list_length (selection); |
| for (int i=0; i<length; i++) { |
| int node = OS.g_list_nth_data (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]; |
| postEvent (SWT.Selection, event); |
| } |
| } |
| } |
| } |
| } |
| } |
| selected = false; |
| } |
| doubleSelected = false; |
| break; |
| } |
| case OS.GDK_FOCUS_CHANGE: { |
| /* |
| * Bug in GTK. When an application opens a new modal top level |
| * shell from inside the "select_row" signal, the GtkCList does not get the |
| * mouse up and does not release grabs. The fix is to release the grabs |
| * when focus is lost. |
| */ |
| GdkEventFocus focusEvent = new GdkEventFocus (); |
| OS.memmove (focusEvent, int0, GdkEventFocus.sizeof); |
| if (focusEvent.in == 0) { |
| if (OS.gtk_grab_get_current () == handle) { |
| OS.gtk_grab_remove (handle); |
| OS.gdk_pointer_ungrab (OS.GDK_CURRENT_TIME); |
| } |
| } |
| break; |
| } |
| } |
| return 1; |
| } |
| return super.processEvent (eventNumber, int0, int1, int2); |
| } |
| |
| 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]) { |
| blockSignal (handle, SWT.Expand); |
| OS.gtk_ctree_expand (handle, int0); |
| unblockSignal (handle, SWT.Expand); |
| } |
| return 0; |
| } |
| |
| int processMouseDown (int int0, int int1, int int2) { |
| int result = super.processMouseDown (int0, int1, int2); |
| if ((style & SWT.MULTI) != 0) selected = true; |
| double [] px = new double [1], py = new double [1]; |
| OS.gdk_event_get_coords (int0, px, py); |
| int x = (int)(px[0]), y = (int)(py[0]); |
| if ((style & SWT.CHECK) != 0) { |
| if (!OS.gtk_ctree_is_hot_spot (handle, x, y)) { |
| int [] row = new int [1], column = new int [1]; |
| if (OS.gtk_clist_get_selection_info (handle, x, y, row, column) != 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); |
| int nX = OS.GTK_CLIST_HOFFSET (handle) + OS.GTK_CTREE_TREE_INDENT (handle) * row_data.level - 2; |
| int nY = OS.GTK_CLIST_VOFFSET (handle) + (OS.GTK_CLIST_ROW_HEIGHT (handle) + 1) * row [0] + 2; |
| int [] check_width = new int [1], check_height = new int [1]; |
| OS.gdk_drawable_get_size (check, check_width, check_height); |
| 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); |
| } |
| } |
| } |
| } |
| } |
| GdkEvent gdkEvent = new GdkEvent (); |
| OS.memmove (gdkEvent, int0, GdkEvent.sizeof); |
| if (gdkEvent.type == OS.GDK_2BUTTON_PRESS) { |
| if (hooks (SWT.DefaultSelection)) return 1; |
| } |
| return result; |
| } |
| |
| int processSelection (int int0, int int1, int int2) { |
| int focus_row = OS.GTK_CLIST_FOCUS_ROW (handle); |
| int focus = OS.gtk_ctree_node_nth (handle, focus_row); |
| if (focus != int0) return 0; |
| if ((style & SWT.MULTI) != 0) selected = false; |
| int ptr = OS.gtk_get_current_event (); |
| if (ptr != 0) { |
| GdkEvent gdkEvent = new GdkEvent (); |
| OS.memmove (gdkEvent, ptr, GdkEvent.sizeof); |
| OS.gdk_event_free (ptr); |
| /* |
| * Feature in GTK. When a leaf node is double clicked, the |
| * GtkCTree issues two tree_row_select signals. Non-leaf |
| * nodes only get one tree_row_select. Avoid issueing |
| * a selection event for the double clicked leaf node. |
| */ |
| if (gdkEvent.type == OS.GDK_2BUTTON_PRESS) return 0; |
| } |
| 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; |
| } |
| |
| int processTimer (int id) { |
| if (timerID != 0) OS.gtk_clist_thaw (handle); |
| timerID = 0; |
| return 0; |
| } |
| |
| void releaseWidget () { |
| for (int i=0; i<items.length; i++) { |
| TreeItem item = items [i]; |
| if (item != null && !item.isDisposed ()) item.releaseResources (); |
| } |
| items = null; |
| if (check != 0) OS.g_object_unref (check); |
| if (uncheck != 0) OS.g_object_unref (uncheck); |
| check = uncheck = 0; |
| if (timerID != 0) OS.gtk_timeout_remove (timerID); |
| 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.releaseResources (); |
| } |
| 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); |
| } |
| |
| void setFontDescription (int font) { |
| super.setFontDescription (font); |
| if (imageHeight != 0) { |
| OS.gtk_widget_realize (handle); |
| OS.gtk_clist_set_row_height (handle, 0); |
| if (imageHeight > OS.GTK_CLIST_ROW_HEIGHT (handle)) { |
| OS.gtk_clist_set_row_height (handle, imageHeight); |
| } |
| } |
| } |
| |
| /** |
| * Display a mark indicating the point at which an item will be inserted. |
| * The drop insert item has a visual hint to show where a dragged item |
| * will be inserted when dropped on the tree. |
| * |
| * @param item the insert item. Null will clear the insertion mark. |
| * @param after true places the insert mark above 'item'. false places |
| * the insert mark below 'item'. |
| * |
| * @exception IllegalArgumentException <ul> |
| * <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> |
| */ |
| public void setInsertMark(TreeItem item, boolean before){ |
| checkWidget(); |
| if (item != null && item.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT); |
| // This needs to be implemented |
| } |
| |
| /** |
| * 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(); |
| blockSignal (handle, SWT.Selection); |
| OS.gtk_ctree_select_recursive (handle, 0); |
| unblockSignal (handle, SWT.Selection); |
| } |
| |
| void setBackgroundColor (GdkColor color) { |
| super.setBackgroundColor (color); |
| OS.gtk_widget_modify_base (handle, 0, color); |
| } |
| |
| public void setRedraw (boolean redraw) { |
| checkWidget (); |
| if (redraw) { |
| OS.gtk_clist_thaw (handle); |
| } else { |
| OS.gtk_clist_freeze (handle); |
| } |
| } |
| |
| /** |
| * 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); |
| deselectAll(); |
| blockSignal (handle, SWT.Selection); |
| 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++; |
| } |
| unblockSignal (handle, SWT.Selection); |
| index = 0; |
| while (index < length) { |
| TreeItem item = items [index]; |
| if (item != null && !item.isDisposed ()) { |
| showItem (item); |
| return; |
| } |
| index++; |
| } |
| } |
| |
| /** |
| * 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(); |
| int selection = OS.GTK_CLIST_SELECTION (handle); |
| if (selection == 0) return; |
| if (OS.g_list_length (selection) == 0) return; |
| int node = OS.g_list_nth_data (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; |
| blockSignal (handle, SWT.Expand); |
| do { |
| int data = OS.g_list_nth_data (parent, 0); |
| row = new GtkCTreeRow (); |
| OS.memmove (row, data, GtkCTreeRow.sizeof); |
| if ((parent = row.parent) == 0) break; |
| OS.gtk_ctree_expand (handle, parent); |
| } while (true); |
| unblockSignal (handle, SWT.Expand); |
| } |
| OS.gtk_ctree_node_moveto (handle, node, 0, 0.0f, 0.0f); |
| } |
| |
| public void update () { |
| checkWidget (); |
| if (timerID != 0) { |
| OS.gtk_clist_thaw (handle); |
| OS.gtk_timeout_remove (timerID); |
| timerID = 0; |
| } |
| super.update (); |
| } |
| |
| } |