| /******************************************************************************* |
| * Copyright (c) 2000, 2009 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.examples.accessibility; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.SWTException; |
| import org.eclipse.swt.accessibility.ACC; |
| import org.eclipse.swt.accessibility.Accessible; |
| import org.eclipse.swt.accessibility.AccessibleAdapter; |
| import org.eclipse.swt.accessibility.AccessibleControlAdapter; |
| import org.eclipse.swt.accessibility.AccessibleControlEvent; |
| import org.eclipse.swt.accessibility.AccessibleEvent; |
| import org.eclipse.swt.accessibility.AccessibleTableCellEvent; |
| import org.eclipse.swt.accessibility.AccessibleTableCellListener; |
| import org.eclipse.swt.events.ControlListener; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.events.SelectionListener; |
| import org.eclipse.swt.graphics.GC; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.widgets.Item; |
| import org.eclipse.swt.widgets.TypedListener; |
| import org.eclipse.swt.widgets.Widget; |
| |
| /** |
| * Instances of this class represent a column in a table widget. |
| * <p><dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>LEFT, RIGHT, CENTER</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd> Move, Resize, Selection</dd> |
| * </dl> |
| * </p><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> |
| * |
| * @see <a href="http://www.eclipse.org/swt/snippets/#table">Table, TableItem, TableColumn snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public class CTableColumn extends Item { |
| CTable parent; |
| int style; |
| String displayText = ""; |
| int width; |
| boolean moveable, resizable = true; |
| int sort = SWT.NONE; |
| String toolTipText; |
| Accessible accessible; |
| |
| /** |
| * 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 CTableColumn (CTable parent, int style) { |
| this (parent, style, checkNull (parent).columns.length); |
| } |
| /** |
| * 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> |
| * <p> |
| * Note that due to a restriction on some platforms, the first column |
| * is always left aligned. |
| * </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 zero-relative index to store the receiver in its parent |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)</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 CTableColumn (CTable parent, int style, int index) { |
| super (parent, checkStyle (style), index); |
| if (!(0 <= index && index <= parent.columns.length)) SWT.error (SWT.ERROR_INVALID_RANGE); |
| this.parent = parent; |
| this.style = super.getStyle (); |
| parent.createItem (this, 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) SWT.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 the user, 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 when the control is selected by the user |
| * |
| * @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) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Selection, typedListener); |
| addListener (SWT.DefaultSelection, typedListener); |
| } |
| static CTable checkNull (CTable table) { |
| if (table == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| return table; |
| } |
| static int checkStyle (int style) { |
| return CTable.checkBits (style, SWT.LEFT, SWT.CENTER, SWT.RIGHT, 0, 0, 0); |
| } |
| void computeDisplayText (GC gc) { |
| int availableWidth = width - 2 * parent.getHeaderPadding (); |
| if (super.getImage () != null) { |
| availableWidth -= super.getImage ().getBounds ().width; |
| availableWidth -= CTable.MARGIN_IMAGE; |
| } |
| if (sort != SWT.NONE) { |
| availableWidth -= parent.arrowBounds.width; |
| availableWidth -= CTable.MARGIN_IMAGE; |
| } |
| String text = super.getText (); |
| int textWidth = gc.textExtent (text, SWT.DRAW_MNEMONIC).x; |
| if (textWidth <= availableWidth) { |
| displayText = text; |
| return; |
| } |
| |
| /* Ellipsis will be needed, so subtract their width from the available text width */ |
| int ellipsisWidth = gc.stringExtent (CTable.ELLIPSIS).x; |
| availableWidth -= ellipsisWidth; |
| if (availableWidth <= 0) { |
| displayText = CTable.ELLIPSIS; |
| return; |
| } |
| |
| /* Make initial guess. */ |
| int index = Math.min (availableWidth / gc.getFontMetrics ().getAverageCharWidth (), text.length ()); |
| textWidth = gc.textExtent (text.substring (0, index), SWT.DRAW_MNEMONIC).x; |
| |
| /* Initial guess is correct. */ |
| if (availableWidth == textWidth) { |
| displayText = text.substring (0, index) + CTable.ELLIPSIS; |
| return; |
| } |
| |
| /* Initial guess is too high, so reduce until fit is found. */ |
| if (availableWidth < textWidth) { |
| do { |
| index--; |
| if (index < 0) { |
| displayText = CTable.ELLIPSIS; |
| return; |
| } |
| text = text.substring (0, index); |
| textWidth = gc.textExtent (text, SWT.DRAW_MNEMONIC).x; |
| } while (availableWidth < textWidth); |
| displayText = text + CTable.ELLIPSIS; |
| return; |
| } |
| |
| /* Initial guess is too low, so increase until overrun is found. */ |
| while (textWidth < availableWidth) { |
| index++; |
| textWidth = gc.textExtent (text.substring (0, index), SWT.DRAW_MNEMONIC).x; |
| } |
| displayText = text.substring (0, index - 1) + CTable.ELLIPSIS; |
| } |
| @Override |
| public void dispose () { |
| if (isDisposed ()) return; |
| Rectangle parentBounds = parent.clientArea; |
| int x = getX (); |
| int index = getIndex (); |
| int orderIndex = getOrderIndex (); |
| int nextColumnAlignment = parent.columns.length > 1 ? parent.columns [1].getAlignment () : SWT.LEFT; |
| CTable parent = this.parent; |
| dispose (true); |
| |
| int width = parentBounds.width - x; |
| parent.redraw (x, 0, width, parentBounds.height, false); |
| /* |
| * If column 0 was disposed then the new column 0 must be redrawn if it appears to the |
| * left of the disposed column in the column order AND one the following are true: |
| * - the parent has style CHECK, since these will now appear in the new column 0 |
| * - the new column 0 had non-left alignment before the dispose, since the parent will have |
| * changed this to LEFT in the call to dispose(true) |
| */ |
| if (index == 0 && ((parent.getStyle () & SWT.CHECK) != 0 || nextColumnAlignment != SWT.LEFT)) { |
| if (parent.columns.length > 0) { |
| CTableColumn newColumn0 = parent.columns [0]; |
| if (newColumn0.getOrderIndex () < orderIndex) { |
| int newColumn0x = newColumn0.getX (); |
| parent.redraw (newColumn0x, 0, newColumn0.width, parentBounds.height, false); |
| /* if the alignment changed then the header text must be repainted with its new alignment */ |
| if (nextColumnAlignment != SWT.LEFT && parent.getHeaderVisible () && parent.drawCount <= 0) { |
| parent.header.redraw (newColumn0x, 0, newColumn0.width, parent.header.getClientArea ().height, false); |
| } |
| } |
| } |
| } |
| if (parent.drawCount <= 0 && parent.getHeaderVisible ()) { |
| parent.header.redraw (x, 0, width, parent.getHeaderHeight (), false); |
| } |
| } |
| void dispose (boolean notifyParent) { |
| super.dispose (); /* super is intentional here */ |
| if (notifyParent) parent.destroyItem (this); |
| if (accessible != null) { |
| accessible.dispose(); |
| accessible = null; |
| } |
| parent = null; |
| } |
| /** |
| * 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 ((getStyle () & SWT.CENTER) != 0) return SWT.CENTER; |
| if ((getStyle () & SWT.RIGHT) != 0) return SWT.RIGHT; |
| return SWT.LEFT; |
| } |
| /* |
| * Returns the width of the header's content |
| * (image + text + sort arrow + internal margins) |
| */ |
| int getContentWidth (GC gc, boolean useDisplayText) { |
| int contentWidth = 0; |
| String text = useDisplayText ? displayText : super.getText (); |
| if (text.length () > 0) { |
| contentWidth += gc.textExtent (text, SWT.DRAW_MNEMONIC).x; |
| } |
| if (super.getImage () != null) { |
| contentWidth += super.getImage ().getBounds ().width; |
| if (text.length () > 0) contentWidth += CTable.MARGIN_IMAGE; |
| } |
| if (sort != SWT.NONE) { |
| contentWidth += parent.arrowBounds.width; |
| if (text.length () > 0 || super.getImage () != null) { |
| contentWidth += CTable.MARGIN_IMAGE; |
| } |
| } |
| return contentWidth; |
| } |
| int getIndex () { |
| CTableColumn[] columns = parent.columns; |
| for (int i = 0; i < columns.length; i++) { |
| if (columns [i] == this) return i; |
| } |
| return -1; |
| } |
| /** |
| * Gets the moveable attribute. A column that is |
| * not moveable cannot be reordered by the user |
| * by dragging the header but may be reordered |
| * by the programmer. |
| * |
| * @return the moveable 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> |
| * |
| * @see CTable#getColumnOrder() |
| * @see CTable#setColumnOrder(int[]) |
| * @see CTableColumn#setMoveable(boolean) |
| * @see SWT#Move |
| * |
| * @since 3.1 |
| */ |
| public boolean getMoveable () { |
| checkWidget (); |
| return moveable; |
| } |
| int getOrderIndex () { |
| CTableColumn[] orderedColumns = parent.orderedColumns; |
| if (orderedColumns == null) return getIndex (); |
| for (int i = 0; i < orderedColumns.length; i++) { |
| if (orderedColumns [i] == this) return i; |
| } |
| return -1; |
| } |
| /** |
| * 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 CTable getParent () { |
| checkWidget (); |
| return parent; |
| } |
| int getPreferredWidth () { |
| if (!parent.getHeaderVisible ()) return 0; |
| GC gc = new GC (parent); |
| int result = getContentWidth (gc, false); |
| gc.dispose (); |
| return result + 2 * parent.getHeaderPadding (); |
| } |
| /** |
| * 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 (); |
| return resizable; |
| } |
| /** |
| * Returns the receiver's tool tip text, or null if it has |
| * not been set. |
| * |
| * @return the receiver's tool tip text |
| * |
| * @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 3.2 |
| */ |
| public String getToolTipText () { |
| checkWidget (); |
| return toolTipText; |
| } |
| /** |
| * 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 (); |
| return width; |
| } |
| int getX () { |
| CTableColumn[] orderedColumns = parent.getOrderedColumns (); |
| int index = getOrderIndex (); |
| int result = -parent.horizontalOffset; |
| for (int i = 0; i < index; i++) { |
| result += orderedColumns [i].width; |
| } |
| return result; |
| } |
| /** |
| * 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 (); |
| CTableItem[] items = parent.items; |
| int index = getIndex (); |
| int newWidth = getPreferredWidth (); |
| for (int i = 0; i < parent.itemsCount; i++) { |
| int width = items [i].getPreferredWidth (index); |
| /* ensure that receiver and parent were not disposed in a callback */ |
| if (parent.isDisposed () || isDisposed ()) return; |
| if (!items [i].isDisposed ()) { |
| newWidth = Math.max (newWidth, width); |
| } |
| } |
| if (newWidth != width) parent.updateColumnWidth (this, newWidth); |
| } |
| void paint (GC gc) { |
| int padding = parent.getHeaderPadding (); |
| |
| int x = getX (); |
| int startX = x + padding; |
| if ((getStyle () & SWT.LEFT) == 0) { |
| int contentWidth = getContentWidth (gc, true); |
| if ((getStyle () & SWT.RIGHT) != 0) { |
| startX = Math.max (startX, x + width - padding - contentWidth); |
| } else { /* SWT.CENTER */ |
| startX = Math.max (startX, x + (width - contentWidth) / 2); |
| } |
| } |
| int headerHeight = parent.getHeaderHeight (); |
| |
| /* restrict the clipping region to the header cell */ |
| gc.setClipping ( |
| x + padding, |
| padding, |
| width - 2 * padding, |
| headerHeight - 2 * padding); |
| |
| if (super.getImage () != null) { |
| Rectangle imageBounds = super.getImage ().getBounds (); |
| int drawHeight = Math.min (imageBounds.height, headerHeight - 2 * padding); |
| gc.drawImage ( |
| super.getImage (), |
| 0, 0, |
| imageBounds.width, imageBounds.height, |
| startX, (headerHeight - drawHeight) / 2, |
| imageBounds.width, drawHeight); |
| startX += imageBounds.width + CTable.MARGIN_IMAGE; |
| } |
| if (displayText.length () > 0) { |
| gc.setForeground (getParent ().display.getSystemColor (SWT.COLOR_BLACK)); |
| int fontHeight = parent.fontHeight; |
| gc.drawText (displayText, startX, (headerHeight - fontHeight) / 2, SWT.DRAW_MNEMONIC); |
| startX += gc.textExtent (displayText, SWT.DRAW_MNEMONIC).x + CTable.MARGIN_IMAGE; |
| } |
| if (sort != SWT.NONE) { |
| Image image = sort == SWT.DOWN ? parent.getArrowDownImage () : parent.getArrowUpImage (); |
| int y = (headerHeight - parent.arrowBounds.height) / 2; |
| gc.drawImage (image, startX, y); |
| } |
| } |
| /** |
| * 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 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 ControlListener |
| * @see #addControlListener |
| */ |
| public void removeControlListener (ControlListener listener) { |
| checkWidget (); |
| if (listener == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| removeListener (SWT.Move, listener); |
| removeListener (SWT.Resize, listener); |
| } |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the control is selected by the user. |
| * |
| * @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) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| removeListener (SWT.Selection, listener); |
| removeListener (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>. |
| * <p> |
| * Note that due to a restriction on some platforms, the first column |
| * is always left aligned. |
| * </p> |
| * @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 = getIndex (); |
| if (index == -1 || index == 0) return; /* column 0 can only have left-alignment */ |
| alignment = CTable.checkBits (alignment, SWT.LEFT, SWT.CENTER, SWT.RIGHT, 0, 0, 0); |
| int style = getStyle (); |
| if ((style & alignment) != 0) return; /* same value */ |
| style &= ~(SWT.LEFT | SWT.CENTER | SWT.RIGHT); |
| style |= alignment; |
| setStyle (style); |
| int x = getX (); |
| parent.redraw (x, 0, width, parent.clientArea.height, false); |
| if (parent.drawCount <= 0 && parent.getHeaderVisible ()) { |
| /* don't damage the header's drawn borders */ |
| parent.header.redraw (x, 1, width - 2, parent.getHeaderHeight () - 3, false); |
| } |
| } |
| @Override |
| public int getStyle () { |
| int s = super.getStyle (); |
| return style | s; |
| } |
| void setStyle (int newStyle) { |
| int s = super.getStyle (); |
| style |= s | newStyle; |
| } |
| @Override |
| public void setImage (Image value) { |
| checkWidget (); |
| if (value == super.getImage ()) return; |
| if (value != null && value.equals (super.getImage ())) return; /* same value */ |
| super.setImage (value); |
| |
| /* An image width change may affect the space available for the column's displayText. */ |
| GC gc = new GC (parent); |
| computeDisplayText (gc); |
| gc.dispose (); |
| |
| /* |
| * If this is the first image being put into the header then the header |
| * height may be adjusted, in which case a full redraw is needed. |
| */ |
| if (parent.headerImageHeight == 0) { |
| int oldHeaderHeight = parent.getHeaderHeight (); |
| parent.setHeaderImageHeight (value.getBounds ().height); |
| if (oldHeaderHeight != parent.getHeaderHeight ()) { |
| /* parent header height changed */ |
| if (parent.drawCount <= 0 && parent.getHeaderVisible ()) { |
| parent.header.redraw (); |
| } |
| parent.redraw (); |
| return; |
| } |
| } |
| |
| if (parent.drawCount <= 0 && parent.getHeaderVisible ()) { |
| /* don't damage the header's drawn borders */ |
| parent.header.redraw (getX (), 1, width - 2, parent.getHeaderHeight () - 3, false); |
| } |
| } |
| /** |
| * Sets the moveable attribute. A column that is |
| * moveable can be reordered by the user by dragging |
| * the header. A column that is not moveable cannot be |
| * dragged by the user but may be reordered |
| * by the programmer. |
| * |
| * @param moveable the moveable 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> |
| * |
| * @see CTable#setColumnOrder(int[]) |
| * @see CTable#getColumnOrder() |
| * @see CTableColumn#getMoveable() |
| * @see SWT#Move |
| * |
| * @since 3.1 |
| */ |
| public void setMoveable (boolean moveable) { |
| checkWidget (); |
| this.moveable = moveable; |
| } |
| /** |
| * Sets the resizable attribute. A column that is |
| * resizable can be resized by the user dragging the |
| * edge of the header. 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 value) { |
| checkWidget (); |
| resizable = value; |
| } |
| void setSortDirection (int value) { |
| if (value == sort) return; |
| boolean widthChange = value == SWT.NONE || sort == SWT.NONE; |
| sort = value; |
| if (widthChange) { |
| /* |
| * adding/removing the sort arrow decreases/increases the width that is |
| * available for the column's header text, so recompute the display text |
| */ |
| GC gc = new GC (parent); |
| computeDisplayText (gc); |
| gc.dispose (); |
| } |
| if (parent.drawCount <= 0 && parent.getHeaderVisible ()) { |
| /* don't damage the header's drawn borders */ |
| parent.header.redraw (getX (), 1, width - 2, parent.getHeaderHeight () - 3, false); |
| } |
| } |
| @Override |
| public void setText (String value) { |
| checkWidget (); |
| if (value == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| if (value.equals (super.getText ())) return; /* same value */ |
| super.setText (value); |
| GC gc = new GC (parent); |
| computeDisplayText (gc); |
| gc.dispose (); |
| if (parent.drawCount <= 0 && parent.getHeaderVisible ()) { |
| /* don't damage the header's drawn borders */ |
| parent.header.redraw (getX (), 1, width - 2, parent.getHeaderHeight () - 3, false); |
| } |
| } |
| /** |
| * Sets the receiver's tool tip text to the argument, which |
| * may be null indicating that the default tool tip for the |
| * control will be shown. For a control that has a default |
| * tool tip, such as the Tree control on Windows, setting |
| * the tool tip text to an empty string replaces the default, |
| * causing no tool tip text to be shown. |
| * <p> |
| * The mnemonic indicator (character '&') is not displayed in a tool tip. |
| * To display a single '&' in the tool tip, the character '&' can be |
| * escaped by doubling it in the string. |
| * </p> |
| * |
| * @param string the new tool tip text (or null) |
| * |
| * @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 3.2 |
| */ |
| public void setToolTipText (String string) { |
| checkWidget (); |
| if (toolTipText == string) return; |
| if (toolTipText != null && toolTipText.equals (string)) return; |
| toolTipText = string; |
| if (parent.toolTipShell == null) return; /* tooltip not currently showing */ |
| if (((Integer) parent.toolTipShell.getData ()).intValue () != getIndex ()) return; /* tooltip showing for different column */ |
| parent.headerUpdateToolTip (getX () + (width / 2)); /* update the tooltip text */ |
| } |
| /** |
| * 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 value) { |
| checkWidget (); |
| if (value < 0) return; |
| if (width == value) return; /* same value */ |
| parent.updateColumnWidth (this, value); |
| } |
| void updateFont (GC gc) { |
| computeDisplayText (gc); |
| } |
| /* |
| * Perform any internal changes necessary to reflect a changed width. |
| */ |
| void updateWidth (GC gc) { |
| String oldDisplayText = displayText; |
| computeDisplayText (gc); |
| /* the header must be damaged if the display text has changed or if the alignment is not LEFT */ |
| if (parent.getHeaderVisible ()) { |
| if ((getStyle () & SWT.LEFT) == 0 || !oldDisplayText.equals (displayText)) { |
| int padding = parent.getHeaderPadding (); |
| parent.header.redraw (getX () + padding, 0, width - padding, parent.getHeaderHeight (), false); |
| } |
| } |
| } |
| /* Returns the accessible for the column header. */ |
| Accessible getAccessible(final Accessible accessibleTable) { |
| if (accessible == null) { |
| accessible = new Accessible(accessibleTable); |
| accessible.addAccessibleListener(new AccessibleAdapter() { |
| @Override |
| public void getName(AccessibleEvent e) { |
| e.result = getText(); |
| System.out.println("tableColumn getName = " + e.result); |
| } |
| }); |
| accessible.addAccessibleControlListener(new AccessibleControlAdapter() { |
| @Override |
| public void getChildAtPoint(AccessibleControlEvent e) { |
| Point point = parent.toControl(e.x, e.y); |
| int x = getX(); |
| if (x <= point.x && point.x <= x + getWidth()) { |
| e.childID = ACC.CHILDID_SELF; |
| } else { |
| e.childID = ACC.CHILDID_NONE; |
| } |
| } |
| @Override |
| public void getChildCount(AccessibleControlEvent e) { |
| e.detail = 0; |
| } |
| @Override |
| public void getLocation(AccessibleControlEvent e) { |
| Rectangle rect = parent.header.getBounds(); |
| rect.x = getX(); |
| Point pt = parent.toDisplay(rect.x, rect.y); |
| e.x = pt.x; |
| e.y = pt.y; |
| e.width = width; |
| e.height = rect.height; |
| } |
| @Override |
| public void getRole(AccessibleControlEvent e) { |
| e.detail = ACC.ROLE_TABLECELL; |
| } |
| }); |
| accessible.addAccessibleTableCellListener(new AccessibleTableCellListener() { |
| @Override |
| public void getColumnHeaders(AccessibleTableCellEvent e) { |
| /* Column header does not have a header. */ |
| } |
| @Override |
| public void getColumnIndex(AccessibleTableCellEvent e) { |
| e.index = getIndex(); |
| } |
| @Override |
| public void getColumnSpan(AccessibleTableCellEvent e) { |
| e.count = 1; /* CTable cells only occupy one column. */ |
| } |
| @Override |
| public void getRowHeaders(AccessibleTableCellEvent e) { |
| /* CTable does not support row headers. */ |
| } |
| @Override |
| public void getRowIndex(AccessibleTableCellEvent e) { |
| e.index = 0; |
| } |
| @Override |
| public void getRowSpan(AccessibleTableCellEvent e) { |
| e.count = 1; /* CTable cells only occupy one row. */ |
| } |
| @Override |
| public void getTable(AccessibleTableCellEvent e) { |
| e.accessible = accessibleTable; |
| } |
| @Override |
| public void isSelected(AccessibleTableCellEvent e) { |
| e.isSelected = false; /* CTable columns cannot be selected (only rows can be selected). */ |
| } |
| }); |
| } |
| return accessible; |
| } |
| } |