| 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.*;
|
|
|
| /**
|
| * Instances of this class represent a selectable user interface object
|
| * that represents a hierarchy of tree items in a tree widget.
|
| *
|
| * <dl>
|
| * <dt><b>Styles:</b></dt>
|
| * <dd>(none)</dd>
|
| * <dt><b>Events:</b></dt>
|
| * <dd>(none)</dd>
|
| * </dl>
|
| * <p>
|
| * IMPORTANT: This class is <em>not</em> intended to be subclassed.
|
| * </p>
|
| */ |
| public class TreeItem extends Item {
|
| Tree parent;
|
|
|
| /** |
| * Constructs a new instance of this class given its parent |
| * (which must be a <code>Tree</code> or a <code>TreeItem</code>) |
| * and a style value describing its behavior and appearance. |
| * The item is added to the end of the items maintained by its parent. |
| * <p> |
| * The style value is either one of the style constants defined in |
| * class <code>SWT</code> which is applicable to instances of this |
| * class, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>SWT</code> style constants. The class description |
| * lists the style constants that are applicable to the class. |
| * Style bits are also inherited from superclasses. |
| * </p> |
| * |
| * @param parent a composite control which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| * |
| * @see SWT |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public TreeItem (Tree parent, int style) {
|
| super (parent, style);
|
| this.parent = parent;
|
| parent.createItem (this, 0, -1);
|
| }
|
|
|
| /** |
| * Constructs a new instance of this class given its parent |
| * (which must be a <code>Tree</code> or a <code>TreeItem</code>), |
| * a style value describing its behavior and appearance, and the index |
| * at which to place it in the items maintained by its parent. |
| * <p> |
| * The style value is either one of the style constants defined in |
| * class <code>SWT</code> which is applicable to instances of this |
| * class, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>SWT</code> style constants. The class description |
| * 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 |
| * @param index the index to store the receiver in its parent |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| * |
| * @see SWT |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public TreeItem (Tree parent, int style, int index) {
|
| super (parent, style);
|
| if (index < 0) error (SWT.ERROR_INVALID_RANGE);
|
| this.parent = parent;
|
| parent.createItem (this, 0, index);
|
| }
|
|
|
| /** |
| * Constructs a new instance of this class given its parent |
| * (which must be a <code>Tree</code> or a <code>TreeItem</code>) |
| * and a style value describing its behavior and appearance. |
| * The item is added to the end of the items maintained by its parent. |
| * <p> |
| * The style value is either one of the style constants defined in |
| * class <code>SWT</code> which is applicable to instances of this |
| * class, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>SWT</code> style constants. The class description |
| * lists the style constants that are applicable to the class. |
| * Style bits are also inherited from superclasses. |
| * </p> |
| * |
| * @param parentItem 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 TreeItem (TreeItem parentItem, int style) {
|
| super (checkNull (parentItem).getParent(), style);
|
| this.parent = parentItem.getParent ();
|
| parent.createItem (this, parentItem.handle, -1);
|
| }
|
|
|
| /** |
| * Returns the receiver's background color. |
| * |
| * @return the background color |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 2.0 |
| * |
| */ |
| public Color getBackground () {
|
| checkWidget ();
|
| Tree parent = getParent();
|
| return parent.getBackground();
|
| }
|
|
|
| /** |
| * Constructs a new instance of this class given its parent |
| * (which must be a <code>Tree</code> or a <code>TreeItem</code>), |
| * a style value describing its behavior and appearance, and the index |
| * at which to place it in the items maintained by its parent. |
| * <p> |
| * The style value is either one of the style constants defined in |
| * class <code>SWT</code> which is applicable to instances of this |
| * class, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>SWT</code> style constants. The class description |
| * lists the style constants that are applicable to the class. |
| * Style bits are also inherited from superclasses. |
| * </p> |
| * |
| * @param parentItem a composite control which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * @param index the index to store the receiver in its parent |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| * |
| * @see SWT |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public TreeItem (TreeItem parentItem, int style, int index) {
|
| super (checkNull (parentItem).getParent (), style);
|
| if (index < 0) error (SWT.ERROR_ITEM_NOT_ADDED);
|
| this.parent = parentItem.getParent ();
|
| parent.createItem (this, parentItem.handle, index);
|
| }
|
|
|
| static TreeItem checkNull (TreeItem item) {
|
| if (item == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
|
| return item;
|
| }
|
|
|
| /** |
| * Returns a rectangle describing the receiver's size and location |
| * relative to its parent. |
| * |
| * @return the receiver's bounding rectangle |
| * |
| * @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 Rectangle getBounds () {
|
| int ctree = parent.handle;
|
| /* NB: Different from gtk_ctree_is_visible() */
|
| if (!OS.gtk_ctree_is_viewable(ctree, handle)) return new Rectangle(0,0,0,0);
|
|
|
| /* Vertical */
|
| int row_index = 0;
|
| int work = OS.GTK_CLIST_ROW_LIST(ctree);
|
| while ((work!=0) && (work!=handle)) {
|
| work = OS.GTK_CTREE_NODE_NEXT(work);
|
| row_index++;
|
| }
|
|
|
| int border = OS.gtk_container_get_border_width(ctree);
|
| // observe the weird row spacing rule
|
| int y = OS.ROW_TOP_YPIXEL(ctree, row_index) + Tree.CELL_SPACING;
|
| int height = parent.getItemHeight();
|
|
|
| /* Horizontal */
|
| int row_ptr = OS.GTK_CTREE_ROW(ctree, handle);
|
| GtkCTreeRow row = new GtkCTreeRow();
|
| OS.memmove(row, OS.g_list_nth_data (handle, 0), GtkCTreeRow.sizeof);
|
| int x = OS.GTK_CLIST_HOFFSET(ctree) + OS.GTK_CTREE_TREE_INDENT (ctree) * row.level;
|
| if (image != null) {
|
| int[] w = new int[1], h = new int[1];
|
| OS.gdk_drawable_get_size(image.pixmap, w, h);
|
| x += w[0];
|
| }
|
| int width = OS.GTK_CLIST_WINDOW_WIDTH(ctree) - x; // No hoffset!
|
|
|
| return new Rectangle (x, y, width, parent.getItemHeight());
|
| }
|
|
|
| /** |
| * Returns <code>true</code> if the receiver is checked, |
| * and false otherwise. When the parent does not have |
| * the <code>CHECK style, return false. |
| * <p> |
| * |
| * @return the checked state |
| * |
| * @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 boolean getChecked () {
|
| checkWidget();
|
| if ((parent.style & SWT.CHECK) == 0) return false;
|
| int ctree = parent.handle;
|
| int [] pixmap = new int [1];
|
| OS.gtk_ctree_get_node_info (ctree, handle, null, null, pixmap, null, null, null, null, null);
|
| return pixmap [0] == parent.check;
|
| }
|
|
|
| public Display getDisplay () {
|
| if (parent == null) error (SWT.ERROR_WIDGET_DISPOSED);
|
| return parent.getDisplay ();
|
| }
|
|
|
| /** |
| * Returns <code>true</code> if the receiver is expanded, |
| * and false otherwise. |
| * <p> |
| * |
| * @return the expanded state |
| * |
| * @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 boolean getExpanded () {
|
| checkWidget();
|
| int ctree = parent.handle;
|
| boolean [] buffer = new boolean [1];
|
| OS.gtk_ctree_get_node_info (ctree, handle, null, null, null, null, null, null, null, buffer);
|
| return buffer [0];
|
| }
|
|
|
| /**
|
| * Returns the foreground color that the receiver will use to draw.
|
| *
|
| * @return the receiver's foreground color
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| *
|
| * @since 2.0
|
| *
|
| */ |
| public Color getForeground () {
|
| checkWidget ();
|
| Tree parent = getParent();
|
| return parent.getForeground();
|
| }
|
|
|
| /** |
| * Returns <code>true</code> if the receiver is grayed, |
| * and false otherwise. When the parent does not have |
| * the <code>CHECK style, return false. |
| * <p> |
| * |
| * @return the grayed state |
| * |
| * @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 boolean getGrayed() {
|
| checkWidget();
|
| return false;
|
| }
|
|
|
| /** |
| * Returns the number of items contained in the receiver |
| * that are direct item children of the receiver. |
| * |
| * @return the number of items |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int getItemCount () {
|
| checkWidget();
|
| return parent.getItemCount (handle);
|
| }
|
|
|
| /**
|
| * Returns an array of <code>TreeItem</code>s which are the
|
| * direct item children of 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 receiver's 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 parent.getItems (handle);
|
| }
|
|
|
| /** |
| * Returns the receiver's parent, which must be a <code>Tree</code>. |
| * |
| * @return the receiver's parent |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public Tree getParent () {
|
| checkWidget();
|
| return parent;
|
| }
|
|
|
| /** |
| * 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();
|
| int data = OS.g_list_nth_data (handle, 0);
|
| GtkCTreeRow row = new GtkCTreeRow ();
|
| OS.memmove (row, data, GtkCTreeRow.sizeof);
|
| if (row.parent == 0) return null;
|
| int ctree = parent.handle;
|
| int index = OS.gtk_ctree_node_get_row_data (ctree, row.parent) - 1;
|
| return parent.items [index];
|
| }
|
|
|
| void releaseChild () {
|
| super.releaseChild ();
|
| parent.destroyItem (this);
|
| }
|
|
|
| void releaseWidget () {
|
| super.releaseWidget ();
|
| parent = null;
|
| }
|
|
|
| /** |
| * Sets the receiver's background color to the color specified |
| * by the argument, or to the default system color for the item |
| * if the argument is null. |
| * |
| * @param color the new color (or null) |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the argument 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> |
| * |
| * @since 2.0 |
| * |
| */ |
| public void setBackground (Color color) {
|
| checkWidget ();
|
| if (color != null && color.isDisposed ()) {
|
| SWT.error (SWT.ERROR_INVALID_ARGUMENT);
|
| }
|
| int ctree = parent.handle;
|
| OS.gtk_ctree_node_set_background (ctree, handle, color != null ? color.handle : null);
|
| }
|
|
|
| /** |
| * Sets the checked state of the receiver. |
| * <p> |
| * |
| * @param checked the new checked state |
| * |
| * @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 setChecked (boolean checked) {
|
| checkWidget();
|
| if ((parent.style & SWT.CHECK) == 0) return;
|
| int ctree = parent.handle;
|
| byte [] spacing = new byte [1];
|
| int [] pixmap = new int [1], mask = new int [1];
|
| boolean [] is_leaf = new boolean [1], expanded = new boolean [1];
|
| byte [] buffer = Converter.wcsToMbcs (null, text, true);
|
| OS.gtk_ctree_get_node_info (ctree, handle, null, spacing, pixmap, mask, pixmap, mask, is_leaf, expanded);
|
| if (checked && pixmap [0] == parent.check) return;
|
| if (!checked && pixmap [0] == parent.uncheck) return;
|
| pixmap [0] = checked ? parent.check : parent.uncheck;
|
| OS.gtk_ctree_set_node_info (ctree, handle, buffer, spacing [0], pixmap [0], mask [0], pixmap [0], mask [0], is_leaf [0], expanded [0]);
|
| }
|
|
|
| /** |
| * Sets the grayed state of the receiver. |
| * <p> |
| * |
| * @param checked the new grayed state |
| * |
| * @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 setGrayed (boolean grayed) {
|
| checkWidget();
|
| }
|
|
|
| /** |
| * Sets the expanded state of the receiver. |
| * <p> |
| * |
| * @param expanded the new expanded state |
| * |
| * @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 setExpanded (boolean expanded) {
|
| checkWidget();
|
| int ctree = parent.handle;
|
| if (expanded) {
|
| OS.gtk_signal_handler_block_by_data (ctree, SWT.Expand);
|
| OS.gtk_ctree_expand (ctree, handle);
|
| OS.gtk_signal_handler_unblock_by_data (ctree, SWT.Expand);
|
| } else {
|
| OS.gtk_signal_handler_block_by_data (ctree, SWT.Collapse);
|
| OS.gtk_ctree_collapse (ctree, handle);
|
| OS.gtk_signal_handler_unblock_by_data (ctree, SWT.Collapse);
|
| }
|
| }
|
|
|
| /** |
| * Sets the receiver's foreground color to the color specified |
| * by the argument, or to the default system color for the item |
| * if the argument is null. |
| * |
| * @param color the new color (or null) |
| * |
| * @since 2.0 |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the argument 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> |
| * |
| * @since 2.0 |
| * |
| */ |
| public void setForeground (Color color){
|
| checkWidget ();
|
| if (color != null && color.isDisposed ()) {
|
| SWT.error (SWT.ERROR_INVALID_ARGUMENT);
|
| }
|
| int ctree = parent.handle;
|
| OS.gtk_ctree_node_set_foreground (ctree, handle, color != null ? color.handle : null);
|
| }
|
|
|
| public void setImage (Image image) {
|
| checkWidget();
|
| if (image != null && image.isDisposed()) {
|
| error(SWT.ERROR_INVALID_ARGUMENT);
|
| }
|
| if ((parent.style & SWT.CHECK) != 0) return;
|
| this.image = image;
|
| int pixmap = 0, mask = 0;
|
| if (image != null) {
|
| pixmap = image.pixmap;
|
| mask = image.mask;
|
| }
|
| int ctree = parent.handle;
|
| byte [] spacing = new byte [1];
|
| boolean [] is_leaf = new boolean [1], expanded = new boolean [1];
|
| byte [] buffer = Converter.wcsToMbcs (null, text, true);
|
| OS.gtk_ctree_get_node_info (ctree, handle, null, spacing, null, null, null, null, is_leaf, expanded);
|
| OS.gtk_ctree_set_node_info (ctree, handle, buffer, spacing [0], pixmap, mask, pixmap, mask, is_leaf [0], expanded [0]);
|
| if (image != null) {
|
| if (parent.imageHeight == 0) {
|
| int [] width = new int [1], height = new int [1];
|
| OS.gdk_drawable_get_size (pixmap, width, height);
|
| if (height [0] > OS.GTK_CLIST_ROW_HEIGHT (parent.handle)) {
|
| parent.imageHeight = height [0];
|
| OS.gtk_clist_set_row_height (ctree, height [0]);
|
| }
|
| }
|
| }
|
| }
|
|
|
| /** |
| * This label will be displayed to the right of the bitmap, |
| * or, if the receiver doesn't have a bitmap to the right of |
| * the horizontal hierarchy connector line. |
| */ |
| public void setText (String string) {
|
| checkWidget();
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| super.setText (string);
|
| int ctree = parent.handle;
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| byte [] spacing = new byte [1];
|
| boolean [] is_leaf = new boolean [1], expanded = new boolean [1];
|
| int [] pixmap_closed = new int [1], mask_closed= new int [1], pixmap_opened= new int [1], mask_opened= new int [1];
|
| OS.gtk_ctree_get_node_info (ctree, handle, null, spacing, pixmap_closed, mask_closed, pixmap_opened, mask_opened, is_leaf, expanded);
|
| OS.gtk_ctree_set_node_info (ctree, handle, buffer, spacing [0], pixmap_closed [0], mask_closed [0], pixmap_opened [0], mask_opened [0], is_leaf [0], expanded [0]);
|
| }
|
|
|
| }
|