| 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 represent a column in a table widget. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>LEFT, RIGHT, CENTER</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd> Move, Resize, Selection</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles LEFT, RIGHT and CENTER may be specified. |
| * </p><p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| */ |
| public class TableColumn extends Item {
|
| Table parent;
|
| /** |
| * Constructs a new instance of this class given its parent |
| * (which must be a <code>Table</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#LEFT |
| * @see SWT#RIGHT |
| * @see SWT#CENTER |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public TableColumn (Table parent, int style) {
|
| super (parent, checkStyle (style));
|
| this.parent = parent;
|
| createWidget (parent.getColumnCount ());
|
| }
|
| /** |
| * Constructs a new instance of this class given its parent |
| * (which must be a <code>Table</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#LEFT |
| * @see SWT#RIGHT |
| * @see SWT#CENTER |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public TableColumn (Table parent, int style, int index) {
|
| super (parent, checkStyle (style));
|
| this.parent = parent;
|
| createWidget (index);
|
| }
|
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the control is moved or resized, by sending |
| * it one of the messages defined in the <code>ControlListener</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 ControlListener |
| * @see #removeControlListener |
| */ |
| public void addControlListener(ControlListener listener) {
|
| checkWidget();
|
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| TypedListener typedListener = new TypedListener (listener);
|
| addListener (SWT.Resize,typedListener);
|
| addListener (SWT.Move,typedListener);
|
| }
|
| /**
|
| * Adds the listener to the collection of listeners who will
|
| * be notified when the control is selected, by sending
|
| * it one of the messages defined in the <code>SelectionListener</code>
|
| * interface.
|
| * <p>
|
| * <code>widgetSelected</code> is called when the column header is selected.
|
| * <code>widgetDefaultSelected</code> is not called.
|
| * </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);
|
| }
|
| static int checkStyle (int style) {
|
| return checkBits (style, SWT.LEFT, SWT.CENTER, SWT.RIGHT, 0, 0, 0);
|
| }
|
| void createWidget (int index) {
|
| parent.createItem (this, index);
|
| text = "";
|
| }
|
| /** |
| * Returns a value which describes the position of the |
| * text or image in the receiver. The value will be one of |
| * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code>. |
| * |
| * @return the alignment |
| * |
| * @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 getAlignment () {
|
| checkWidget();
|
| if ((style & SWT.LEFT) != 0) return SWT.LEFT;
|
| if ((style & SWT.CENTER) != 0) return SWT.CENTER;
|
| if ((style & SWT.RIGHT) != 0) return SWT.RIGHT;
|
| return SWT.LEFT;
|
| }
|
| public Display getDisplay () {
|
| Table parent = this.parent;
|
| if (parent == null) error (SWT.ERROR_WIDGET_DISPOSED);
|
| return parent.getDisplay ();
|
| }
|
| /** |
| * Returns the receiver's parent, which must be a <code>Table</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 Table getParent () {
|
| checkWidget();
|
| return parent;
|
| }
|
| /** |
| * Gets the resizable attribute. A column that is |
| * not resizable cannot be dragged by the user but |
| * may be resized by the programmer. |
| * |
| * @return the resizable attribute |
| * |
| * @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 getResizable () {
|
| checkWidget();
|
| int index = parent.indexOf (this);
|
| if (index == -1) return false;
|
| int chandle=OS.GTK_CLIST_COLUMN (parent.handle);
|
| GtkCListColumn gtkcolumn = new GtkCListColumn ();
|
| OS.memmove(gtkcolumn, chandle+index*GtkCListColumn.sizeof, GtkCListColumn.sizeof);
|
| return (gtkcolumn.resizeable == 1) ? true : false;
|
| }
|
| /** |
| * Gets the width of the receiver. |
| * |
| * @return the width |
| * |
| * @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 getWidth () {
|
| checkWidget();
|
| int index = parent.indexOf (this);
|
| if (index == -1) return 0;
|
| int chandle=OS.GTK_CLIST_COLUMN (parent.handle);
|
| GtkCListColumn gtkcolumn = new GtkCListColumn();
|
| OS.memmove(gtkcolumn, chandle+index*GtkCListColumn.sizeof, GtkCListColumn.sizeof);
|
| return gtkcolumn.width;
|
| }
|
| /** |
| * Causes the receiver to be resized to its preferred size. |
| * For a composite, this involves computing the preferred size |
| * from its layout, if there is one. |
| * |
| * @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 pack () {
|
| checkWidget();
|
| int index = parent.indexOf (this);
|
| if (index == -1) return;
|
| int clist = parent.handle;
|
| int width = OS.gtk_clist_optimal_column_width (clist, index);
|
| OS.gtk_clist_set_column_width (clist, index, width);
|
| }
|
| void releaseChild () {
|
| super.releaseChild ();
|
| parent.destroyItem (this);
|
| }
|
| void releaseWidget () {
|
| super.releaseWidget ();
|
| text = null;
|
| parent = null;
|
| }
|
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the control is moved or resized. |
| * |
| * @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 ControlListener |
| * @see #addControlListener |
| */ |
| public void removeControlListener (ControlListener listener) {
|
| checkWidget();
|
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (eventTable == null) return;
|
| eventTable.unhook (SWT.Move, listener);
|
| eventTable.unhook (SWT.Resize, listener);
|
| }
|
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the control is selected. |
| * |
| * @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 #addSelectionListener |
| */ |
| public void removeSelectionListener(SelectionListener listener) {
|
| checkWidget();
|
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (eventTable == null) return;
|
| eventTable.unhook (SWT.Selection, listener);
|
| eventTable.unhook (SWT.DefaultSelection,listener);
|
| }
|
| /** |
| * Controls how text and images will be displayed in the receiver. |
| * The argument should be one of <code>LEFT</code>, <code>RIGHT</code> |
| * or <code>CENTER</code>. |
| * |
| * @param alignment the new alignment |
| * |
| * @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 setAlignment (int alignment) {
|
| checkWidget();
|
| if ((alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER)) == 0) return;
|
| int index = parent.indexOf (this);
|
| if (index == -1 || index == 0) return;
|
| int table = parent.handle;
|
| style &= ~(SWT.LEFT | SWT.RIGHT | SWT.CENTER);
|
| style |= alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER);
|
| int justification = 0;
|
| if ((style & SWT.LEFT) == SWT.LEFT) justification |= OS.GTK_JUSTIFY_LEFT;
|
| if ((style & SWT.CENTER) == SWT.CENTER) justification |= OS.GTK_JUSTIFY_CENTER;
|
| if ((style & SWT.RIGHT) == SWT.RIGHT) justification |= OS.GTK_JUSTIFY_RIGHT;
|
| OS.gtk_clist_set_column_justification (table, index, justification);
|
| }
|
| /** |
| * Sets the resizable attribute. A column that is |
| * not resizable cannot be dragged by the user but |
| * may be resized by the programmer. |
| * |
| * @param resizable the resize attribute |
| * |
| * @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 setResizable (boolean resizable) {
|
| checkWidget();
|
| int index = parent.indexOf (this);
|
| if (index == -1) return;
|
| int table = parent.handle;
|
| OS.gtk_clist_set_column_resizeable (table, index, resizable);
|
| }
|
| public void setText (String string) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| super.setText (string);
|
| int index = parent.indexOf (this);
|
| if (index == -1) return;
|
| int table = parent.handle;
|
| byte [] buffer = Converter.wcsToMbcs (null, string, true);
|
| OS.gtk_clist_set_column_title (table, index, buffer);
|
| /*
|
| * Bug in GTK. When a table column is hidden and then shown,
|
| * and new text is set into the column, the widget that shows the
|
| * text is not resized to show the new text. The fix is to force the
|
| * table header to resize the widget.
|
| */
|
| int headerHandle = OS.gtk_clist_get_column_widget (table, index);
|
| if (headerHandle != 0) {
|
| GtkRequisition requisition = new GtkRequisition ();
|
| OS.gtk_widget_size_request (headerHandle, requisition);
|
| }
|
| }
|
| /** |
| * Sets the width of the receiver. |
| * |
| * @param width the new width |
| * |
| * @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 setWidth (int width) {
|
| checkWidget();
|
| int index = parent.indexOf (this);
|
| if (index == -1) return;
|
| int table = parent.handle;
|
| OS.gtk_clist_set_column_width (table, index, width);
|
| }
|
|
|
| }
|