| /******************************************************************************* |
| * Copyright (c) 2000, 2015 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.graphics.Color; |
| import org.eclipse.swt.graphics.Font; |
| import org.eclipse.swt.graphics.GC; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.graphics.Pattern; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Event; |
| import org.eclipse.swt.widgets.Item; |
| import org.eclipse.swt.widgets.Widget; |
| |
| /** |
| * Instances of this class represent a selectable user interface object |
| * that represents an item in a table. |
| * <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> |
| * |
| * @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 CTableItem extends Item { |
| CTable parent; |
| int index = -1; |
| boolean checked, grayed, cached; |
| |
| String[] texts; |
| int[] textWidths = new int [1]; /* cached string measurements */ |
| int customWidth = -1; /* width specified by Measure callback */ |
| int fontHeight; /* cached item font height */ |
| int[] fontHeights; |
| int imageIndent; |
| Image[] images; |
| Color foreground, background; |
| String[] displayTexts; |
| Accessible[] accessibles; |
| Color[] cellForegrounds, cellBackgrounds; |
| Font font; |
| Font[] cellFonts; |
| Display display; |
| |
| static final int MARGIN_TEXT = 3; /* the left and right margins within the text's space */ |
| |
| /** |
| * 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 |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public CTableItem (CTable parent, int style) { |
| this (parent, style, checkNull (parent).itemsCount); |
| } |
| /** |
| * 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 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 |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public CTableItem (CTable parent, int style, int index) { |
| this (parent, style, index, true); |
| } |
| CTableItem (CTable parent, int style, int index, boolean notifyParent) { |
| super (parent, style); |
| int validItemIndex = parent.itemsCount; |
| if (!(0 <= index && index <= validItemIndex)) SWT.error (SWT.ERROR_INVALID_RANGE); |
| this.parent = parent; |
| this.index = index; |
| this.display = parent.getDisplay (); |
| int columnCount = parent.columns.length; |
| accessibles = new Accessible [columnCount > 0 ? columnCount : 1]; |
| if (columnCount > 0) { |
| displayTexts = new String [columnCount]; |
| if (columnCount > 1) { |
| texts = new String [columnCount]; |
| textWidths = new int [columnCount]; |
| images = new Image [columnCount]; |
| } |
| } |
| if (notifyParent) parent.createItem (this); |
| } |
| /* |
| * Updates internal structures in the receiver and its child items to handle the creation of a new column. |
| */ |
| void addColumn (CTableColumn column) { |
| int index = column.getIndex (); |
| int columnCount = parent.columns.length; |
| |
| if (columnCount > 1) { |
| if (columnCount == 2) { |
| texts = new String [2]; |
| } else { |
| String[] newTexts = new String [columnCount]; |
| System.arraycopy (texts, 0, newTexts, 0, index); |
| System.arraycopy (texts, index, newTexts, index + 1, columnCount - index - 1); |
| texts = newTexts; |
| } |
| if (index == 0) { |
| texts [1] = super.getText (); |
| super.setText (""); //$NON-NLS-1$ |
| } |
| |
| if (columnCount == 2) { |
| images = new Image [2]; |
| } else { |
| Image[] newImages = new Image [columnCount]; |
| System.arraycopy (images, 0, newImages, 0, index); |
| System.arraycopy (images, index, newImages, index + 1, columnCount - index - 1); |
| images = newImages; |
| } |
| if (index == 0) { |
| images [1] = super.getImage (); |
| super.setImage (null); |
| } |
| |
| int[] newTextWidths = new int [columnCount]; |
| System.arraycopy (textWidths, 0, newTextWidths, 0, index); |
| System.arraycopy (textWidths, index, newTextWidths, index + 1, columnCount - index - 1); |
| textWidths = newTextWidths; |
| } else { |
| customWidth = -1; /* columnCount == 1 */ |
| } |
| |
| /* |
| * The length of displayTexts always matches the parent's column count, unless this |
| * count is zero, in which case displayTexts is null. |
| */ |
| String[] newDisplayTexts = new String [columnCount]; |
| if (columnCount > 1) { |
| System.arraycopy (displayTexts, 0, newDisplayTexts, 0, index); |
| System.arraycopy (displayTexts, index, newDisplayTexts, index + 1, columnCount - index - 1); |
| } |
| displayTexts = newDisplayTexts; |
| |
| if (cellBackgrounds != null) { |
| Color[] newCellBackgrounds = new Color [columnCount]; |
| System.arraycopy (cellBackgrounds, 0, newCellBackgrounds, 0, index); |
| System.arraycopy (cellBackgrounds, index, newCellBackgrounds, index + 1, columnCount - index - 1); |
| cellBackgrounds = newCellBackgrounds; |
| } |
| if (cellForegrounds != null) { |
| Color[] newCellForegrounds = new Color [columnCount]; |
| System.arraycopy (cellForegrounds, 0, newCellForegrounds, 0, index); |
| System.arraycopy (cellForegrounds, index, newCellForegrounds, index + 1, columnCount - index - 1); |
| cellForegrounds = newCellForegrounds; |
| } |
| if (cellFonts != null) { |
| Font[] newCellFonts = new Font [columnCount]; |
| System.arraycopy (cellFonts, 0, newCellFonts, 0, index); |
| System.arraycopy (cellFonts, index, newCellFonts, index + 1, columnCount - index - 1); |
| cellFonts = newCellFonts; |
| |
| int[] newFontHeights = new int [columnCount]; |
| System.arraycopy (fontHeights, 0, newFontHeights, 0, index); |
| System.arraycopy (fontHeights, index, newFontHeights, index + 1, columnCount - index - 1); |
| fontHeights = newFontHeights; |
| } |
| |
| if (columnCount > accessibles.length) { |
| Accessible[] newAccessibles = new Accessible [columnCount]; |
| System.arraycopy (accessibles, 0, newAccessibles, 0, index); |
| System.arraycopy (accessibles, index, newAccessibles, index + 1, columnCount - index - 1); |
| accessibles = newAccessibles; |
| } |
| |
| if (index == 0 && columnCount > 1) { |
| /* |
| * The new second column may have more width available to it than it did when it was |
| * the first column if checkboxes are being shown, so recompute its displayText if needed. |
| */ |
| if ((parent.getStyle () & SWT.CHECK) != 0) { |
| GC gc = new GC (parent); |
| gc.setFont (getFont (1, false)); |
| computeDisplayText (1, gc); |
| gc.dispose (); |
| } |
| } |
| } |
| static CTable checkNull (CTable table) { |
| if (table == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| return table; |
| } |
| void clear () { |
| checked = grayed = false; |
| texts = null; |
| textWidths = new int [1]; |
| fontHeight = 0; |
| fontHeights = null; |
| images = null; |
| foreground = background = null; |
| displayTexts = null; |
| cellForegrounds = cellBackgrounds = null; |
| font = null; |
| cellFonts = null; |
| cached = false; |
| super.setText (""); |
| super.setImage (null); |
| |
| int columnCount = parent.columns.length; |
| disposeAccessibles(); |
| accessibles = new Accessible [columnCount > 0 ? columnCount : 1]; |
| if (columnCount > 0) { |
| displayTexts = new String [columnCount]; |
| if (columnCount > 1) { |
| texts = new String [columnCount]; |
| textWidths = new int [columnCount]; |
| images = new Image [columnCount]; |
| } |
| } |
| } |
| void computeDisplayText (int columnIndex, GC gc) { |
| if ((parent.getStyle () & SWT.VIRTUAL) != 0 && !cached) return; /* nothing to do */ |
| |
| int columnCount = parent.columns.length; |
| if (columnCount == 0) { |
| String text = getText (0, false); |
| textWidths [columnIndex] = gc.stringExtent (text).x; |
| return; |
| } |
| |
| CTableColumn column = parent.columns [columnIndex]; |
| int availableWidth = column.width - 2 * parent.getCellPadding () - 2 * MARGIN_TEXT; |
| if (columnIndex == 0) { |
| availableWidth -= parent.col0ImageWidth; |
| if (parent.col0ImageWidth > 0) availableWidth -= CTable.MARGIN_IMAGE; |
| if ((parent.getStyle () & SWT.CHECK) != 0) { |
| availableWidth -= parent.checkboxBounds.width; |
| availableWidth -= CTable.MARGIN_IMAGE; |
| } |
| } else { |
| Image image = getImage (columnIndex, false); |
| if (image != null) { |
| availableWidth -= image.getBounds ().width; |
| availableWidth -= CTable.MARGIN_IMAGE; |
| } |
| } |
| |
| String text = getText (columnIndex, false); |
| int textWidth = gc.stringExtent (text).x; |
| if (textWidth <= availableWidth) { |
| displayTexts [columnIndex] = text; |
| textWidths [columnIndex] = textWidth; |
| 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) { |
| displayTexts [columnIndex] = CTable.ELLIPSIS; |
| textWidths [columnIndex] = ellipsisWidth; |
| return; |
| } |
| |
| /* Make initial guess. */ |
| int index = Math.min (availableWidth / gc.getFontMetrics ().getAverageCharWidth (), text.length ()); |
| textWidth = gc.stringExtent (text.substring (0, index)).x; |
| |
| /* Initial guess is correct. */ |
| if (availableWidth == textWidth) { |
| displayTexts [columnIndex] = text.substring (0, index) + CTable.ELLIPSIS; |
| textWidths [columnIndex] = textWidth + ellipsisWidth; |
| return; |
| } |
| |
| /* Initial guess is too high, so reduce until fit is found. */ |
| if (availableWidth < textWidth) { |
| do { |
| index--; |
| if (index < 0) { |
| displayTexts [columnIndex] = CTable.ELLIPSIS; |
| textWidths [columnIndex] = ellipsisWidth; |
| return; |
| } |
| text = text.substring (0, index); |
| textWidth = gc.stringExtent (text).x; |
| } while (availableWidth < textWidth); |
| displayTexts [columnIndex] = text + CTable.ELLIPSIS; |
| textWidths [columnIndex] = textWidth + ellipsisWidth; |
| return; |
| } |
| |
| /* Initial guess is too low, so increase until overrun is found. */ |
| int previousWidth = 0; |
| while (textWidth < availableWidth) { |
| index++; |
| previousWidth = textWidth; |
| textWidth = gc.stringExtent (text.substring (0, index)).x; |
| } |
| displayTexts [columnIndex] = text.substring (0, index - 1) + CTable.ELLIPSIS; |
| textWidths [columnIndex] = previousWidth + ellipsisWidth; |
| } |
| void computeDisplayTexts (GC gc) { |
| if ((parent.getStyle () & SWT.VIRTUAL) != 0 && !cached) return; /* nothing to do */ |
| |
| int columnCount = parent.columns.length; |
| if (columnCount == 0) return; |
| |
| for (int i = 0; i < columnCount; i++) { |
| gc.setFont (getFont (i, false)); |
| computeDisplayText (i, gc); |
| } |
| } |
| /* |
| * Computes the cached text widths. |
| */ |
| void computeTextWidths (GC gc) { |
| if ((parent.getStyle () & SWT.VIRTUAL) != 0 && !cached) return; /* nothing to do */ |
| |
| int validColumnCount = Math.max (1, parent.columns.length); |
| textWidths = new int [validColumnCount]; |
| for (int i = 0; i < textWidths.length; i++) { |
| String value = getDisplayText (i); |
| if (value != null) { |
| gc.setFont (getFont (i, false)); |
| textWidths [i] = gc.stringExtent (value).x; |
| } |
| } |
| } |
| @Override |
| public void dispose () { |
| if (isDisposed ()) return; |
| CTable parent = this.parent; |
| int startIndex = index; |
| int endIndex = parent.itemsCount - 1; |
| dispose (true); |
| parent.redrawItems (startIndex, endIndex, false); |
| } |
| void dispose (boolean notifyParent) { |
| if (isDisposed ()) return; |
| if (notifyParent) parent.destroyItem (this); |
| super.dispose (); /* super is intentional here */ |
| background = foreground = null; |
| cellBackgrounds = cellForegrounds = null; |
| font = null; |
| cellFonts = null; |
| images = null; |
| texts = displayTexts = null; |
| textWidths = fontHeights = null; |
| disposeAccessibles(); |
| parent = null; |
| } |
| void disposeAccessibles() { |
| if (accessibles != null) { |
| for (int i = 0; i < accessibles.length; i++) { |
| if (accessibles[i] != null) { |
| accessibles[i].dispose(); |
| } |
| } |
| accessibles = null; |
| } |
| } |
| /* Returns the cell accessible for the specified column index in the receiver. */ |
| Accessible getAccessible(final Accessible accessibleTable, final int columnIndex) { |
| if (accessibles [columnIndex] == null) { |
| Accessible accessible = new Accessible(accessibleTable); |
| accessible.addAccessibleListener(new AccessibleAdapter() { |
| @Override |
| public void getName(AccessibleEvent e) { |
| e.result = getText(columnIndex); |
| System.out.println("tableItem getName = " + e.result); |
| } |
| }); |
| accessible.addAccessibleControlListener(new AccessibleControlAdapter() { |
| @Override |
| public void getChild(AccessibleControlEvent e) { |
| /* CTable cells do not have children, so just return the index in parent. */ |
| switch (e.childID) { |
| case ACC.CHILDID_CHILD_INDEX: |
| e.detail = index * Math.max(1, parent.getColumnCount()) + columnIndex + parent.getColumnCount(); |
| break; |
| } |
| } |
| @Override |
| public void getChildAtPoint(AccessibleControlEvent e) { |
| Point point = parent.toControl(e.x, e.y); |
| if (getBounds(columnIndex).contains(point)) { |
| e.childID = ACC.CHILDID_SELF; |
| } else { |
| e.childID = ACC.CHILDID_NONE; |
| } |
| } |
| @Override |
| public void getFocus(AccessibleControlEvent e) { |
| e.childID = (parent.focusItem == CTableItem.this && parent.isFocusControl()) ? |
| ACC.CHILDID_SELF : ACC.CHILDID_NONE; |
| } |
| @Override |
| public void getLocation(AccessibleControlEvent e) { |
| Rectangle location = getBounds(columnIndex); |
| Point pt = parent.toDisplay(location.x, location.y); |
| e.x = pt.x; |
| e.y = pt.y; |
| e.width = location.width; |
| e.height = location.height; |
| } |
| @Override |
| public void getRole(AccessibleControlEvent e) { |
| e.detail = ACC.ROLE_TABLECELL; |
| } |
| @Override |
| public void getValue(AccessibleControlEvent e) { |
| e.result = getText(columnIndex); |
| } |
| }); |
| accessible.addAccessibleTableCellListener(new AccessibleTableCellListener() { |
| @Override |
| public void getColumnHeaders(AccessibleTableCellEvent e) { |
| if (parent.columns.length == 0) { |
| /* The CTable is being used as a list, and there are no headers. */ |
| e.accessibles = null; |
| } else { |
| /* CTable cells only occupy one column. */ |
| CTableColumn column = parent.columns [columnIndex]; |
| e.accessibles = new Accessible[] {column.getAccessible (accessibleTable)}; |
| } |
| } |
| @Override |
| public void getColumnIndex(AccessibleTableCellEvent e) { |
| e.index = columnIndex; |
| } |
| @Override |
| public void getColumnSpan(AccessibleTableCellEvent e) { |
| /* CTable cells only occupy one column. */ |
| e.count = 1; |
| } |
| @Override |
| public void getRowHeaders(AccessibleTableCellEvent e) { |
| /* CTable does not support row headers. */ |
| } |
| @Override |
| public void getRowIndex(AccessibleTableCellEvent e) { |
| e.index = index; |
| } |
| @Override |
| public void getRowSpan(AccessibleTableCellEvent e) { |
| /* CTable cells only occupy one row. */ |
| e.count = 1; |
| } |
| @Override |
| public void getTable(AccessibleTableCellEvent e) { |
| e.accessible = accessibleTable; |
| } |
| @Override |
| public void isSelected(AccessibleTableCellEvent e) { |
| e.isSelected = CTableItem.this.isSelected(); |
| } |
| }); |
| accessibles [columnIndex] = accessible; |
| } |
| return accessibles [columnIndex]; |
| } |
| /** |
| * 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 (); |
| if (!parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| if (background != null) return background; |
| return parent.getBackground (); |
| } |
| /** |
| * Returns the background color at the given column index in the receiver. |
| * |
| * @param index the column index |
| * @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 3.0 |
| */ |
| public Color getBackground (int columnIndex) { |
| checkWidget (); |
| if (!parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| int validColumnCount = Math.max (1, parent.columns.length); |
| if (!(0 <= columnIndex && columnIndex < validColumnCount)) return getBackground (); |
| if (cellBackgrounds == null || cellBackgrounds [columnIndex] == null) return getBackground (); |
| return cellBackgrounds [columnIndex]; |
| } |
| /** |
| * 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> |
| * |
| * @since 3.2 |
| */ |
| public Rectangle getBounds () { |
| checkWidget (); |
| return getBounds (true); |
| } |
| Rectangle getBounds (boolean checkData) { |
| if (checkData && !parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| int x = getTextX (0); |
| int width = textWidths [0] + 2 * MARGIN_TEXT; |
| if (parent.columns.length > 0) { |
| CTableColumn column = parent.columns [0]; |
| int right = column.getX () + column.width; |
| if (x + width > right) { |
| width = Math.max (0, right - x); |
| } |
| } |
| return new Rectangle (x, parent.getItemY (this), width, parent.itemHeight); |
| } |
| /** |
| * Returns a rectangle describing the receiver's size and location |
| * relative to its parent at a column in the table. |
| * |
| * @param index the index that specifies the column |
| * @return the receiver's bounding column 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 columnIndex) { |
| checkWidget (); |
| if (!parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| CTableColumn[] columns = parent.columns; |
| int columnCount = columns.length; |
| int validColumnCount = Math.max (1, columnCount); |
| if (!(0 <= columnIndex && columnIndex < validColumnCount)) { |
| return new Rectangle (0, 0, 0, 0); |
| } |
| /* |
| * If there are no columns then this is the bounds of the receiver's content. |
| */ |
| if (columnCount == 0) { |
| int width = getContentWidth (0); |
| return new Rectangle ( |
| getContentX (0), |
| parent.getItemY (this), |
| width, |
| parent.itemHeight - 1); |
| } |
| |
| CTableColumn column = columns [columnIndex]; |
| if (columnIndex == 0) { |
| /* |
| * For column 0 this is bounds from the beginning of the content to the |
| * end of the column. |
| */ |
| int x = getContentX (0); |
| int offset = x - column.getX (); |
| int width = Math.max (0, column.width - offset - 1); /* max is for columns with small widths */ |
| return new Rectangle (x, parent.getItemY (this) + 1, width, parent.itemHeight - 1); |
| } |
| /* |
| * For columns > 0 this is the bounds of the table cell. |
| */ |
| return new Rectangle (column.getX (), parent.getItemY (this) + 1, column.width, parent.itemHeight - 1); |
| } |
| /* |
| * Returns the full bounds of a cell in a table, regardless of its content. |
| */ |
| Rectangle getCellBounds (int columnIndex) { |
| int y = parent.getItemY (this); |
| if (parent.columns.length == 0) { |
| int width; |
| if (customWidth != -1) { |
| width = getContentX (0) + customWidth + parent.horizontalOffset; |
| } else { |
| int textPaintWidth = textWidths [0] + 2 * MARGIN_TEXT; |
| width = getTextX (0) + textPaintWidth + parent.horizontalOffset; |
| } |
| return new Rectangle (-parent.horizontalOffset, y, width, parent.itemHeight); |
| } |
| CTableColumn column = parent.columns [columnIndex]; |
| return new Rectangle (column.getX (), y, column.width, parent.itemHeight); |
| } |
| /* |
| * Returns the bounds of the receiver's checkbox, or null if the parent's style does not |
| * include SWT.CHECK. |
| */ |
| Rectangle getCheckboxBounds () { |
| if ((parent.getStyle () & SWT.CHECK) == 0) return null; |
| Rectangle result = parent.checkboxBounds; |
| if (parent.columns.length == 0) { |
| result.x = parent.getCellPadding () - parent.horizontalOffset; |
| } else { |
| result.x = parent.columns [0].getX () + parent.getCellPadding (); |
| } |
| result.y = parent.getItemY (this) + (parent.itemHeight - result.height) / 2; |
| return result; |
| } |
| /** |
| * Returns <code>true</code> if the receiver is checked, |
| * and false otherwise. When the parent does not have |
| * the <code>CHECK</code> style, return false. |
| * |
| * @return the checked state of the checkbox |
| * |
| * @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.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| return checked; |
| } |
| int getContentWidth (int columnIndex) { |
| int width = textWidths [columnIndex] + 2 * MARGIN_TEXT; |
| if (columnIndex == 0) { |
| width += parent.col0ImageWidth; |
| if (parent.col0ImageWidth > 0) width += CTable.MARGIN_IMAGE; |
| } else { |
| Image image = getImage (columnIndex, false); |
| if (image != null) { |
| width += image.getBounds ().width + CTable.MARGIN_IMAGE; |
| } |
| } |
| return width; |
| } |
| /* |
| * Returns the x value where the receiver's content (ie.- its image or text) begins |
| * for the specified column. |
| */ |
| int getContentX (int columnIndex) { |
| int minX = parent.getCellPadding (); |
| if (columnIndex == 0) { |
| Rectangle checkboxBounds = getCheckboxBounds (); |
| if (checkboxBounds != null) { |
| minX += checkboxBounds.width + CTable.MARGIN_IMAGE; |
| } |
| } |
| |
| if (parent.columns.length == 0) return minX - parent.horizontalOffset; /* free first column */ |
| |
| CTableColumn column = parent.columns [columnIndex]; |
| int columnX = column.getX (); |
| if ((column.getStyle () & SWT.LEFT) != 0) return columnX + minX; |
| |
| /* column is not left-aligned */ |
| int contentWidth = getContentWidth (columnIndex); |
| int contentX = 0; |
| if ((column.getStyle () & SWT.RIGHT) != 0) { |
| contentX = column.width - parent.getCellPadding () - contentWidth; |
| } else { /* SWT.CENTER */ |
| contentX = (column.width - contentWidth) / 2; |
| } |
| return Math.max (columnX + minX, columnX + contentX); |
| } |
| String getDisplayText (int columnIndex) { |
| if (parent.columns.length == 0) return getText (0, false); |
| String result = displayTexts [columnIndex]; |
| return result != null ? result : ""; //$NON-NLS-1$ |
| } |
| /* |
| * Returns the bounds that should be used for drawing a focus rectangle on the receiver |
| */ |
| Rectangle getFocusBounds () { |
| int x = 0; |
| CTableColumn[] columns = parent.columns; |
| int[] columnOrder = parent.getColumnOrder (); |
| if ((parent.getStyle () & SWT.FULL_SELECTION) != 0) { |
| int col0index = columnOrder.length == 0 ? 0 : columnOrder [0]; |
| if (col0index == 0) { |
| x = getTextX (0); |
| } else { |
| x = -parent.horizontalOffset; |
| } |
| } else { |
| x = getTextX (0); |
| } |
| |
| if (columns.length > 0) { |
| /* ensure that the focus x does not start beyond the right bound of column 0 */ |
| int rightX = columns [0].getX () + columns [0].width; |
| x = Math.min (x, rightX - 1); |
| } |
| |
| int width; |
| if (columns.length == 0) { |
| if (customWidth != -1) { |
| width = customWidth; |
| } else { |
| width = textWidths [0] + 2 * MARGIN_TEXT; |
| } |
| } else { |
| CTableColumn column; |
| if ((parent.getStyle () & SWT.FULL_SELECTION) != 0) { |
| column = columns [columnOrder [columnOrder.length - 1]]; |
| } else { |
| column = columns [0]; |
| } |
| width = column.getX () + column.width - x - 1; |
| } |
| return new Rectangle ( |
| x, |
| parent.getItemY (this) + (parent.linesVisible ? 1 : 0), |
| width, |
| parent.itemHeight - (parent.linesVisible ? 1 : 0)); |
| } |
| /** |
| * Returns the font that the receiver will use to paint textual information for this item. |
| * |
| * @return the receiver's font |
| * |
| * @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 3.0 |
| */ |
| public Font getFont () { |
| checkWidget (); |
| return getFont (true); |
| } |
| Font getFont (boolean checkData) { |
| if (checkData && !parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| if (font != null) return font; |
| return parent.getFont (); |
| } |
| /** |
| * Returns the font that the receiver will use to paint textual information |
| * for the specified cell in this item. |
| * |
| * @param index the column index |
| * @return the receiver's font |
| * |
| * @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 3.0 |
| */ |
| public Font getFont (int columnIndex) { |
| checkWidget (); |
| return getFont (columnIndex, true); |
| } |
| Font getFont (int columnIndex, boolean checkData) { |
| if (checkData && !parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| int validColumnCount = Math.max (1, parent.columns.length); |
| if (!(0 <= columnIndex && columnIndex < validColumnCount)) return getFont (checkData); |
| if (cellFonts == null || cellFonts [columnIndex] == null) return getFont (checkData); |
| return cellFonts [columnIndex]; |
| } |
| int getFontHeight () { |
| if (fontHeight != 0) return fontHeight; |
| return parent.fontHeight; |
| } |
| int getFontHeight (int columnIndex) { |
| if (fontHeights == null || fontHeights [columnIndex] == 0) return getFontHeight (); |
| return fontHeights [columnIndex]; |
| } |
| /** |
| * 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 (); |
| if (!parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| if (foreground != null) return foreground; |
| return parent.getForeground (); |
| } |
| /** |
| * |
| * Returns the foreground color at the given column index in the receiver. |
| * |
| * @param index the column index |
| * @return the 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 3.0 |
| */ |
| public Color getForeground (int columnIndex) { |
| checkWidget (); |
| if (!parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| int validColumnCount = Math.max (1, parent.columns.length); |
| if (!(0 <= columnIndex && columnIndex < validColumnCount)) return getForeground (); |
| if (cellForegrounds == null || cellForegrounds [columnIndex] == null) return getForeground (); |
| return cellForegrounds [columnIndex]; |
| } |
| /** |
| * Returns <code>true</code> if the receiver is grayed, |
| * and false otherwise. When the parent does not have |
| * the <code>CHECK</code> style, return false. |
| * |
| * @return the grayed state of the checkbox |
| * |
| * @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 (); |
| if (!parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| return grayed; |
| } |
| /* |
| * Returns the bounds representing the clickable region that should select the receiver. |
| */ |
| Rectangle getHitBounds () { |
| int[] columnOrder = parent.getColumnOrder (); |
| int contentX = 0; |
| if ((parent.getStyle () & SWT.FULL_SELECTION) != 0) { |
| int col0index = columnOrder.length == 0 ? 0 : columnOrder [0]; |
| if (col0index == 0) { |
| contentX = getContentX (0); |
| } else { |
| contentX = 0; |
| } |
| } else { |
| contentX = getContentX (0); |
| } |
| |
| int width = 0; |
| CTableColumn[] columns = parent.columns; |
| if (columns.length == 0) { |
| width = getContentWidth (0); |
| } else { |
| /* |
| * If there are columns then this spans from the beginning of the receiver's column 0 |
| * image or text to the end of either column 0 or the last column (FULL_SELECTION). |
| */ |
| CTableColumn column; |
| if ((parent.getStyle () & SWT.FULL_SELECTION) != 0) { |
| column = columns [columnOrder [columnOrder.length - 1]]; |
| } else { |
| column = columns [0]; |
| } |
| width = column.getX () + column.width - contentX; |
| } |
| return new Rectangle (contentX, parent.getItemY (this), width, parent.itemHeight); |
| } |
| @Override |
| public Image getImage () { |
| checkWidget (); |
| if (!parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| return super.getImage (); |
| } |
| /** |
| * Returns the image stored at the given column index in the receiver, |
| * or null if the image has not been set or if the column does not exist. |
| * |
| * @param index the column index |
| * @return the image stored at the given column index 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 Image getImage (int columnIndex) { |
| checkWidget (); |
| return getImage (columnIndex, true); |
| } |
| Image getImage (int columnIndex, boolean checkData) { |
| if (checkData && !parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| int validColumnCount = Math.max (1, parent.columns.length); |
| if (!(0 <= columnIndex && columnIndex < validColumnCount)) return null; |
| if (columnIndex == 0) return super.getImage (); /* super is intentional here */ |
| return images [columnIndex]; |
| } |
| /** |
| * Returns a rectangle describing the size and location |
| * relative to its parent of an image at a column in the |
| * table. An empty rectangle is returned if index exceeds |
| * the index of the table's last column. |
| * |
| * @param index the index that specifies the column |
| * @return the receiver's bounding image 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 getImageBounds (int columnIndex) { |
| checkWidget (); |
| if (!parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| int validColumnCount = Math.max (1, parent.columns.length); |
| if (!(0 <= columnIndex && columnIndex < validColumnCount)) return new Rectangle (0,0,0,0); |
| |
| int padding = parent.getCellPadding (); |
| int startX = getContentX (columnIndex); |
| int itemHeight = parent.itemHeight; |
| int imageSpaceY = itemHeight - 2 * padding; |
| int y = parent.getItemY (this); |
| Image image = getImage (columnIndex, false); |
| int drawWidth = 0; |
| if (columnIndex == 0) { |
| /* for column 0 all images have the same width */ |
| drawWidth = parent.col0ImageWidth; |
| } else { |
| if (image != null) drawWidth = image.getBounds ().width; |
| } |
| return new Rectangle (startX, y + padding, drawWidth, imageSpaceY); |
| } |
| /** |
| * Gets the image indent. |
| * |
| * @return the indent |
| * |
| * @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 getImageIndent () { |
| checkWidget(); |
| if (!parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| return imageIndent; // TODO |
| } |
| @Override |
| public String toString () { |
| if (!isDisposed () && (parent.getStyle () & SWT.VIRTUAL) != 0 && !cached) { |
| return "CTableItem {*virtual*}"; //$NON-NLS-1$ |
| } |
| return super.toString (); |
| } |
| /** |
| * 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; |
| } |
| /* |
| * Returns the receiver's ideal width for the specified columnIndex. |
| */ |
| int getPreferredWidth (int columnIndex) { |
| int width = 0; |
| GC gc = new GC (parent); |
| gc.setFont (getFont (columnIndex, false)); |
| width += gc.stringExtent (getText (columnIndex, false)).x + 2 * MARGIN_TEXT; |
| if (columnIndex == 0) { |
| if (parent.col0ImageWidth > 0) { |
| width += parent.col0ImageWidth; |
| width += CTable.MARGIN_IMAGE; |
| } |
| } else { |
| Image image = getImage (columnIndex, false); |
| if (image != null) { |
| width += image.getBounds ().width; |
| width += CTable.MARGIN_IMAGE; |
| } |
| } |
| |
| if (parent.isListening (SWT.MeasureItem)) { |
| Event event = new Event (); |
| event.item = this; |
| event.gc = gc; |
| event.index = columnIndex; |
| event.x = getContentX (columnIndex); |
| event.y = parent.getItemY (this); |
| event.width = width; |
| event.height = parent.itemHeight; |
| parent.notifyListeners (SWT.MeasureItem, event); |
| if (parent.itemHeight != event.height) { |
| parent.customHeightSet = true; |
| boolean update = parent.setItemHeight (event.height + 2 * parent.getCellPadding ()); |
| if (update) parent.redraw (); |
| } |
| width = event.width; |
| } |
| |
| gc.dispose (); |
| if (columnIndex == 0 && (parent.getStyle () & SWT.CHECK) != 0) { |
| width += parent.checkboxBounds.width; |
| width += CTable.MARGIN_IMAGE; |
| } |
| return width + 2 * parent.getCellPadding (); |
| } |
| @Override |
| public String getText () { |
| checkWidget (); |
| if (!parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| return super.getText (); |
| } |
| /** |
| * Returns the text stored at the given column index in the receiver, |
| * or empty string if the text has not been set. |
| * |
| * @param index the column index |
| * @return the text stored at the given column index 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 String getText (int columnIndex) { |
| checkWidget (); |
| return getText (columnIndex, true); |
| } |
| String getText (int columnIndex, boolean checkData) { |
| if (checkData && !parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| int validColumnCount = Math.max (1, parent.columns.length); |
| if (!(0 <= columnIndex && columnIndex < validColumnCount)) return ""; //$NON-NLS-1$ |
| if (columnIndex == 0) return super.getText (); /* super is intentional here */ |
| if (texts [columnIndex] == null) return ""; //$NON-NLS-1$ |
| return texts [columnIndex]; |
| } |
| /** |
| * Returns a rectangle describing the size and location |
| * relative to its parent of the text at a column in the |
| * table. An empty rectangle is returned if index exceeds |
| * the index of the table's last column. |
| * |
| * @param index the index that specifies the column |
| * @return the receiver's bounding text 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> |
| * |
| * @since 3.3 |
| */ |
| public Rectangle getTextBounds (int columnIndex) { |
| checkWidget (); |
| if (!parent.checkData (this, true)) SWT.error (SWT.ERROR_WIDGET_DISPOSED); |
| CTableColumn[] columns = parent.columns; |
| int columnCount = columns.length; |
| int validColumnCount = Math.max (1, columnCount); |
| if (!(0 <= columnIndex && columnIndex < validColumnCount)) { |
| return new Rectangle (0, 0, 0, 0); |
| } |
| /* |
| * If there are no columns then this is the bounds of the receiver's content, |
| * starting from the text. |
| */ |
| if (columnCount == 0) { |
| int x = getTextX (0) + MARGIN_TEXT; |
| int width = Math.max (0, getContentX(0) + getContentWidth (0) - x); |
| return new Rectangle ( |
| x, |
| parent.getItemY (this), |
| width, |
| parent.itemHeight - 1); |
| } |
| |
| CTableColumn column = columns [columnIndex]; |
| if (columnIndex == 0) { |
| /* |
| * For column 0 this is bounds from the beginning of the content to the |
| * end of the column, starting from the text. |
| */ |
| int x = getTextX (0) + MARGIN_TEXT; |
| int offset = x - column.getX (); |
| int width = Math.max (0, column.width - offset - 1); /* max is for columns with small widths */ |
| return new Rectangle (x, parent.getItemY (this) + 1, width, parent.itemHeight - 1); |
| } |
| /* |
| * For columns > 0 this is the bounds of the table cell, starting from the text. |
| */ |
| int x = getTextX (columnIndex) + MARGIN_TEXT; |
| int offset = x - column.getX (); |
| int width = Math.max (0, column.width - offset - MARGIN_TEXT); |
| return new Rectangle (x, parent.getItemY (this) + 1, width, parent.itemHeight - 1); |
| } |
| /* |
| * Returns the x value where the receiver's text begins. |
| */ |
| int getTextX (int columnIndex) { |
| int textX = getContentX (columnIndex); |
| if (columnIndex == 0) { |
| textX += parent.col0ImageWidth; |
| if (parent.col0ImageWidth > 0) textX += CTable.MARGIN_IMAGE; |
| } else { |
| Image image = getImage (columnIndex, false); |
| if (image != null) { |
| textX += image.getBounds ().width + CTable.MARGIN_IMAGE; |
| } |
| } |
| return textX; |
| } |
| /* |
| * Answers a boolean indicating whether the receiver's y is within the current |
| * viewport of the parent. |
| */ |
| boolean isInViewport () { |
| int topIndex = parent.topIndex; |
| if (index < topIndex) return false; |
| int visibleCount = parent.clientArea.height / parent.itemHeight; |
| return index <= topIndex + visibleCount; |
| } |
| boolean isSelected () { |
| return parent.getSelectionIndex (this) != -1; |
| } |
| /* |
| * The backgroundOnly argument indicates whether the item should only |
| * worry about painting its background color and selection. |
| * |
| * Returns a boolean indicating whether to abort drawing focus on the item. |
| * If the receiver is not the current focus item then this value is irrelevant. |
| */ |
| boolean paint (GC gc, CTableColumn column, boolean backgroundOnly) { |
| if (!parent.checkData (this, true)) return false; |
| int columnIndex = 0, x = 0; |
| if (column != null) { |
| columnIndex = column.getIndex (); |
| x = column.getX (); |
| } |
| |
| /* |
| * Capture GC attributes that will need to be restored later in the paint |
| * process to ensure that the item paints as intended without being affected |
| * by GC changes made in MeasureItem/EraseItem/PaintItem callbacks. |
| */ |
| int oldAlpha = gc.getAlpha (); |
| boolean oldAdvanced = gc.getAdvanced (); |
| int oldAntialias = gc.getAntialias (); |
| Pattern oldBackgroundPattern = gc.getBackgroundPattern (); |
| Pattern oldForegroundPattern = gc.getForegroundPattern (); |
| int oldInterpolation = gc.getInterpolation (); |
| int oldTextAntialias = gc.getTextAntialias (); |
| |
| if (parent.isListening (SWT.MeasureItem)) { |
| int contentWidth = getContentWidth (columnIndex); |
| int contentX = getContentX (columnIndex); |
| gc.setFont (getFont (columnIndex, false)); |
| Event event = new Event (); |
| event.item = this; |
| event.gc = gc; |
| event.index = columnIndex; |
| event.x = contentX; |
| event.y = parent.getItemY (this); |
| event.width = contentWidth; |
| event.height = parent.itemHeight; |
| parent.notifyListeners (SWT.MeasureItem, event); |
| event.gc = null; |
| if (gc.isDisposed ()) return false; |
| gc.setAlpha (oldAlpha); |
| gc.setAntialias (oldAntialias); |
| gc.setBackgroundPattern (oldBackgroundPattern); |
| gc.setForegroundPattern (oldForegroundPattern); |
| gc.setInterpolation (oldInterpolation); |
| gc.setTextAntialias (oldTextAntialias); |
| gc.setAdvanced (oldAdvanced); |
| if (isDisposed ()) return false; |
| if (parent.itemHeight != event.height) { |
| parent.customHeightSet = true; |
| boolean update = parent.setItemHeight (event.height + 2 * parent.getCellPadding ()); |
| if (update) parent.redraw (); |
| } |
| if (parent.columns.length == 0) { |
| int change = event.width - (customWidth != -1 ? customWidth : contentWidth); |
| if (event.width != contentWidth || customWidth != -1) customWidth = event.width; |
| if (change != 0) { /* scrollbar may be affected since no columns */ |
| parent.updateHorizontalBar (contentX + event.width, change); |
| // TODO what if clip is too small now? |
| } |
| } |
| } |
| |
| /* if this cell is completely to the right of the client area then there's no need to paint it */ |
| Rectangle clientArea = parent.clientArea; |
| if (clientArea.x + clientArea.width < x) return false; |
| |
| Rectangle cellBounds = getCellBounds (columnIndex); |
| if (parent.linesVisible) { |
| cellBounds.y++; |
| cellBounds.height--; |
| } |
| int cellRightX = 0; |
| if (column != null) { |
| cellRightX = column.getX () + column.width; |
| } else { |
| cellRightX = cellBounds.x + cellBounds.width; |
| } |
| |
| /* restrict the clipping region to the cell */ |
| gc.setClipping (x, cellBounds.y, clientArea.width - x, cellBounds.height); |
| |
| int y = parent.getItemY (this); |
| int itemHeight = parent.itemHeight; |
| |
| /* draw the parent background color/image of this cell */ |
| if (column == null) { |
| gc.fillRectangle (0, y, clientArea.width, itemHeight); |
| //parent.drawBackground (gc, 0, y, clientArea.width, itemHeight); |
| } else { |
| int fillWidth = cellBounds.width; |
| if (parent.linesVisible) fillWidth--; |
| gc.fillRectangle (cellBounds.x, cellBounds.y, fillWidth, cellBounds.height); |
| //parent.drawBackground (gc, cellBounds.x, cellBounds.y, fillWidth, cellBounds.height); |
| } |
| |
| boolean isSelected = isSelected (); |
| boolean isFocusItem = parent.focusItem == this && parent.isFocusControl (); |
| boolean drawBackground = true; |
| boolean drawForeground = true; |
| boolean drawSelection = isSelected; |
| boolean drawFocus = isFocusItem; |
| if (parent.isListening (SWT.EraseItem)) { |
| drawBackground = background != null || (cellBackgrounds != null && cellBackgrounds [columnIndex] != null); |
| gc.setFont (getFont (columnIndex, false)); |
| if (isSelected && (columnIndex == 0 || (parent.getStyle () & SWT.FULL_SELECTION) != 0)) { |
| gc.setForeground (display.getSystemColor (SWT.COLOR_LIST_SELECTION_TEXT)); |
| gc.setBackground (display.getSystemColor (SWT.COLOR_LIST_SELECTION)); |
| } else { |
| gc.setForeground (getForeground (columnIndex)); |
| gc.setBackground (getBackground (columnIndex)); |
| } |
| Event event = new Event (); |
| event.item = this; |
| event.gc = gc; |
| event.index = columnIndex; |
| event.doit = true; |
| event.detail = SWT.FOREGROUND; |
| if (drawBackground) event.detail |= SWT.BACKGROUND; |
| if (isSelected) event.detail |= SWT.SELECTED; |
| if (isFocusItem) event.detail |= SWT.FOCUSED; |
| event.x = cellBounds.x; |
| event.y = cellBounds.y; |
| event.width = cellBounds.width; |
| event.height = cellBounds.height; |
| gc.setClipping (cellBounds); |
| parent.notifyListeners (SWT.EraseItem, event); |
| event.gc = null; |
| if (gc.isDisposed ()) return false; |
| gc.setAlpha (oldAlpha); |
| gc.setAntialias (oldAntialias); |
| gc.setBackgroundPattern (oldBackgroundPattern); |
| gc.setClipping (cellBounds); |
| gc.setForegroundPattern (oldForegroundPattern); |
| gc.setInterpolation (oldInterpolation); |
| gc.setTextAntialias (oldTextAntialias); |
| gc.setAdvanced (oldAdvanced); |
| if (isDisposed ()) return false; |
| if (!event.doit) { |
| drawBackground = drawForeground = drawSelection = drawFocus = false; |
| } else { |
| drawBackground = drawBackground && (event.detail & SWT.BACKGROUND) != 0; |
| drawForeground = (event.detail & SWT.FOREGROUND) != 0; |
| drawSelection = isSelected && (event.detail & SWT.SELECTED) != 0; |
| drawFocus = isFocusItem && (event.detail & SWT.FOCUSED) != 0; |
| } |
| } |
| |
| /* draw the cell's set background if appropriate */ |
| if (drawBackground) { |
| gc.setBackground (getBackground (columnIndex)); |
| if (columnIndex == 0 && (column == null || column.getOrderIndex () == 0)) { |
| Rectangle focusBounds = getFocusBounds (); |
| int fillWidth = 0; |
| if (column == null) { |
| fillWidth = focusBounds.width; |
| } else { |
| fillWidth = column.width - focusBounds.x; |
| if (parent.linesVisible) fillWidth--; |
| } |
| gc.fillRectangle (focusBounds.x, focusBounds.y, fillWidth, focusBounds.height); |
| } else { |
| int fillWidth = cellBounds.width; |
| gc.fillRectangle (cellBounds.x, cellBounds.y, fillWidth, cellBounds.height); |
| } |
| } |
| |
| /* draw the selection bar if the receiver is selected */ |
| if (drawSelection && (columnIndex == 0 || (parent.getStyle () & SWT.FULL_SELECTION) != 0)) { |
| if (parent.isFocusControl () || (parent.getStyle () & SWT.HIDE_SELECTION) == 0) { |
| gc.setBackground (display.getSystemColor (SWT.COLOR_LIST_SELECTION)); |
| if (columnIndex == 0) { |
| Rectangle focusBounds = getFocusBounds (); |
| int startX, fillWidth; |
| if (column == null || column.getOrderIndex () == 0 || (parent.getStyle () & SWT.FULL_SELECTION) == 0) { |
| startX = focusBounds.x + 1; /* space for left bound of focus rect */ |
| } else { |
| startX = column.getX (); |
| } |
| if (column == null) { |
| fillWidth = focusBounds.width - 2; |
| } else { |
| fillWidth = column.getX () + column.width - startX; |
| if (column.getOrderIndex () == parent.columns.length - 1 || (parent.getStyle () & SWT.FULL_SELECTION) == 0) { |
| fillWidth -= 2; /* space for right bound of focus rect */ |
| } |
| } |
| if (fillWidth > 0) { |
| gc.fillRectangle (startX, focusBounds.y + 1, fillWidth, focusBounds.height - 2); |
| } |
| } else { |
| int fillWidth = column.width; |
| if (column.getOrderIndex () == 0) { |
| fillWidth -= 1; |
| } |
| if (column.getOrderIndex () == parent.columns.length - 1) { |
| fillWidth -= 2; /* space for right bound of focus rect */ |
| } |
| if (fillWidth > 0) { |
| gc.fillRectangle ( |
| column.getX (), |
| cellBounds.y + 1, |
| fillWidth, |
| cellBounds.height - 2); |
| } |
| } |
| } |
| } |
| |
| if (backgroundOnly) return false; |
| |
| /* Draw checkbox if drawing column 0 and parent has style SWT.CHECK */ |
| if (columnIndex == 0 && (parent.getStyle () & SWT.CHECK) != 0) { |
| Image baseImage = grayed ? parent.getGrayUncheckedImage () : parent.getUncheckedImage (); |
| Rectangle checkboxBounds = getCheckboxBounds (); |
| gc.drawImage (baseImage, checkboxBounds.x, checkboxBounds.y); |
| /* Draw checkmark if item is checked */ |
| if (checked) { |
| Image checkmarkImage = parent.getCheckmarkImage (); |
| Rectangle checkmarkBounds = checkmarkImage.getBounds (); |
| int xInset = (checkboxBounds.width - checkmarkBounds.width) / 2; |
| int yInset = (checkboxBounds.height - checkmarkBounds.height) / 2; |
| gc.drawImage (checkmarkImage, checkboxBounds.x + xInset, checkboxBounds.y + yInset); |
| } |
| } |
| |
| if (drawForeground) { |
| Image image = getImage (columnIndex, false); |
| String text = getDisplayText (columnIndex); |
| Rectangle imageArea = getImageBounds (columnIndex); |
| int startX = imageArea.x; |
| |
| /* while painting the cell's content restrict the clipping region */ |
| int padding = parent.getCellPadding (); |
| gc.setClipping ( |
| startX, |
| cellBounds.y + padding - (parent.linesVisible ? 1 : 0), |
| cellRightX - startX - padding, |
| cellBounds.height - 2 * (padding - (parent.linesVisible ? 1 : 0))); |
| |
| /* draw the image */ |
| if (image != null) { |
| Rectangle imageBounds = image.getBounds (); |
| gc.drawImage ( |
| image, |
| 0, 0, /* source x, y */ |
| imageBounds.width, imageBounds.height, /* source width, height */ |
| imageArea.x, imageArea.y, /* dest x, y */ |
| imageArea.width, imageArea.height); /* dest width, height */ |
| } |
| |
| /* draw the text */ |
| if (text.length () > 0) { |
| gc.setFont (getFont (columnIndex, false)); |
| int fontHeight = getFontHeight (columnIndex); |
| if (drawSelection && (columnIndex == 0 || (parent.getStyle () & SWT.FULL_SELECTION) != 0)) { |
| if (parent.isFocusControl () || (parent.getStyle () & SWT.HIDE_SELECTION) == 0) { |
| gc.setForeground (display.getSystemColor (SWT.COLOR_LIST_SELECTION_TEXT)); |
| } |
| } else { |
| if (!isSelected || drawSelection) { |
| gc.setForeground (getForeground (columnIndex)); |
| } |
| } |
| x = getTextX (columnIndex) + MARGIN_TEXT; |
| gc.drawString (text, x, y + (itemHeight - fontHeight) / 2, true); |
| } |
| } |
| |
| if (parent.isListening (SWT.PaintItem)) { |
| int contentWidth = getContentWidth (columnIndex); |
| int contentX = getContentX (columnIndex); |
| gc.setFont (getFont (columnIndex, false)); |
| if (isSelected && (columnIndex == 0 || (parent.getStyle () & SWT.FULL_SELECTION) != 0)) { |
| gc.setForeground (display.getSystemColor (SWT.COLOR_LIST_SELECTION_TEXT)); |
| gc.setBackground (display.getSystemColor (SWT.COLOR_LIST_SELECTION)); |
| } else { |
| gc.setForeground (getForeground (columnIndex)); |
| gc.setBackground (getBackground (columnIndex)); |
| } |
| Event event = new Event (); |
| event.item = this; |
| event.gc = gc; |
| event.index = columnIndex; |
| if (isSelected) event.detail |= SWT.SELECTED; |
| if (drawFocus) event.detail |= SWT.FOCUSED; |
| event.x = contentX; |
| event.y = cellBounds.y; |
| event.width = contentWidth; |
| event.height = cellBounds.height; |
| gc.setClipping (cellBounds); |
| parent.notifyListeners (SWT.PaintItem, event); |
| event.gc = null; |
| if (gc.isDisposed ()) return false; |
| gc.setAlpha (oldAlpha); |
| gc.setAntialias (oldAntialias); |
| gc.setBackgroundPattern (oldBackgroundPattern); |
| gc.setClipping (cellBounds); |
| gc.setForegroundPattern (oldForegroundPattern); |
| gc.setInterpolation (oldInterpolation); |
| gc.setTextAntialias (oldTextAntialias); |
| gc.setAdvanced (oldAdvanced); |
| drawFocus = isFocusItem && (event.detail & SWT.FOCUSED) != 0; |
| } |
| |
| return isFocusItem && !drawFocus; |
| } |
| /* |
| * Redraw part of the receiver. If either EraseItem or PaintItem is hooked then |
| * only full cells should be damaged, so adjust accordingly. If neither of these |
| * events are hooked then the exact bounds given for damaging can be used. |
| */ |
| void redraw (int x, int y, int width, int height, int columnIndex) { |
| if (!parent.isListening (SWT.EraseItem) && !parent.isListening (SWT.PaintItem)) { |
| parent.redraw (x, y, width, height, false); |
| return; |
| } |
| Rectangle cellBounds = getCellBounds (columnIndex); |
| parent.redraw (cellBounds.x, cellBounds.y, cellBounds.width, cellBounds.height, false); |
| } |
| void redrawItem () { |
| parent.redraw (0, parent.getItemY (this), parent.clientArea.width, parent.itemHeight, false); |
| } |
| /* |
| * Updates internal structures in the receiver and its child items to handle the removal of a column. |
| */ |
| void removeColumn (CTableColumn column, int index) { |
| int columnCount = parent.columns.length; |
| |
| if (columnCount == 0) { |
| /* reverts to normal table when last column disposed */ |
| cellBackgrounds = cellForegrounds = null; |
| displayTexts = null; |
| cellFonts = null; |
| fontHeights = null; |
| GC gc = new GC (parent); |
| computeTextWidths (gc); |
| gc.dispose (); |
| return; |
| } |
| |
| String[] newTexts = new String [columnCount]; |
| System.arraycopy (texts, 0, newTexts, 0, index); |
| System.arraycopy (texts, index + 1, newTexts, index, columnCount - index); |
| texts = newTexts; |
| |
| Image[] newImages = new Image [columnCount]; |
| System.arraycopy (images, 0, newImages, 0, index); |
| System.arraycopy (images, index + 1, newImages, index, columnCount - index); |
| images = newImages; |
| |
| int[] newTextWidths = new int [columnCount]; |
| System.arraycopy (textWidths, 0, newTextWidths, 0, index); |
| System.arraycopy (textWidths, index + 1, newTextWidths, index, columnCount - index); |
| textWidths = newTextWidths; |
| |
| String[] newDisplayTexts = new String [columnCount]; |
| System.arraycopy (displayTexts, 0, newDisplayTexts, 0, index); |
| System.arraycopy (displayTexts, index + 1, newDisplayTexts, index, columnCount - index); |
| displayTexts = newDisplayTexts; |
| |
| if (columnCount > 1) { |
| Accessible[] newAccessibles = new Accessible [columnCount]; |
| System.arraycopy (accessibles, 0, newAccessibles, 0, index); |
| System.arraycopy (accessibles, index + 1, newAccessibles, index, columnCount - index); |
| accessibles = newAccessibles; |
| } |
| |
| if (cellBackgrounds != null) { |
| Color[] newCellBackgrounds = new Color [columnCount]; |
| System.arraycopy (cellBackgrounds, 0, newCellBackgrounds, 0, index); |
| System.arraycopy (cellBackgrounds, index + 1, newCellBackgrounds, index, columnCount - index); |
| cellBackgrounds = newCellBackgrounds; |
| } |
| if (cellForegrounds != null) { |
| Color[] newCellForegrounds = new Color [columnCount]; |
| System.arraycopy (cellForegrounds, 0, newCellForegrounds, 0, index); |
| System.arraycopy (cellForegrounds, index + 1, newCellForegrounds, index, columnCount - index); |
| cellForegrounds = newCellForegrounds; |
| } |
| if (cellFonts != null) { |
| Font[] newCellFonts = new Font [columnCount]; |
| System.arraycopy (cellFonts, 0, newCellFonts, 0, index); |
| System.arraycopy (cellFonts, index + 1, newCellFonts, index, columnCount - index); |
| cellFonts = newCellFonts; |
| |
| int[] newFontHeights = new int [columnCount]; |
| System.arraycopy (fontHeights, 0, newFontHeights, 0, index); |
| System.arraycopy (fontHeights, index + 1, newFontHeights, index, columnCount - index); |
| fontHeights = newFontHeights; |
| } |
| |
| if (index == 0) { |
| super.setText (texts [0] != null ? texts [0] : ""); //$NON-NLS-1$ |
| texts [0] = null; |
| super.setImage(images [0]); |
| images [0] = null; |
| /* |
| * The new first column may not have as much width available to it as it did when it was |
| * the second column if checkboxes are being shown, so recompute its displayText if needed. |
| */ |
| if ((parent.getStyle () & SWT.CHECK) != 0) { |
| GC gc = new GC (parent); |
| gc.setFont (getFont (0, false)); |
| computeDisplayText (0, gc); |
| gc.dispose (); |
| } |
| } |
| if (columnCount < 2) { |
| texts = null; |
| images = 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); |
| } |
| Color oldColor = background; |
| if (oldColor == color) return; |
| background = color; |
| if (oldColor != null && oldColor.equals (color)) return; |
| if ((parent.getStyle () & SWT.VIRTUAL) != 0) cached = true; |
| redrawItem (); |
| } |
| /** |
| * Sets the background color at the given column index in the receiver |
| * to the color specified by the argument, or to the default system color for the item |
| * if the argument is null. |
| * |
| * @param index the column index |
| * @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 3.0 |
| */ |
| public void setBackground (int columnIndex, Color color) { |
| checkWidget (); |
| if (color != null && color.isDisposed ()) { |
| SWT.error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| int validColumnCount = Math.max (1, parent.columns.length); |
| if (!(0 <= columnIndex && columnIndex < validColumnCount)) return; |
| if (cellBackgrounds == null) { |
| if (color == null) return; |
| cellBackgrounds = new Color [validColumnCount]; |
| } |
| Color oldColor = cellBackgrounds [columnIndex]; |
| if (oldColor == color) return; |
| cellBackgrounds [columnIndex] = color; |
| if (oldColor != null && oldColor.equals (color)) return; |
| if ((parent.getStyle () & SWT.VIRTUAL) != 0) cached = true; |
| |
| if (isInViewport ()) { |
| Rectangle bounds = getCellBounds (columnIndex); |
| parent.redraw (bounds.x, bounds.y, bounds.width, bounds.height, false); |
| } |
| } |
| /** |
| * Sets the checked state of the checkbox for this item. This state change |
| * only applies if the Table was created with the SWT.CHECK style. |
| * |
| * @param checked the new checked state of the checkbox |
| * |
| * @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 value) { |
| checkWidget (); |
| if ((parent.getStyle () & SWT.CHECK) == 0) return; |
| if (checked == value) return; |
| checked = value; |
| if ((parent.getStyle () & SWT.VIRTUAL) != 0) cached = true; |
| |
| if (isInViewport ()) { |
| if (parent.isListening (SWT.EraseItem) || parent.isListening (SWT.PaintItem)) { |
| redrawItem (); |
| } else { |
| Rectangle bounds = getCheckboxBounds (); |
| parent.redraw (bounds.x, bounds.y, bounds.width, bounds.height, false); |
| } |
| } |
| } |
| /** |
| * Sets the font that the receiver will use to paint textual information |
| * for this item to the font specified by the argument, or to the default font |
| * for that kind of control if the argument is null. |
| * |
| * @param font the new font (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 3.0 |
| */ |
| public void setFont (Font font) { |
| checkWidget (); |
| if (font != null && font.isDisposed ()) { |
| SWT.error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| Font oldFont = this.font; |
| if (oldFont == font) return; |
| this.font = font; |
| if (oldFont != null && oldFont.equals (font)) return; |
| |
| Rectangle bounds = getBounds (false); |
| int oldRightX = bounds.x + bounds.width; |
| if ((parent.getStyle () & SWT.VIRTUAL) != 0) cached = true; |
| |
| /* recompute cached values for string measurements */ |
| GC gc = new GC (parent); |
| gc.setFont (getFont (false)); |
| fontHeight = gc.getFontMetrics ().getHeight (); |
| computeDisplayTexts (gc); |
| computeTextWidths (gc); |
| gc.dispose (); |
| |
| /* horizontal bar could be affected if table has no columns */ |
| if (parent.columns.length == 0) { |
| bounds = getBounds (false); |
| int newRightX = bounds.x + bounds.width; |
| parent.updateHorizontalBar (newRightX, newRightX - oldRightX); |
| } |
| redrawItem (); |
| } |
| /** |
| * Sets the font that the receiver will use to paint textual information |
| * for the specified cell in this item to the font specified by the |
| * argument, or to the default font for that kind of control if the |
| * argument is null. |
| * |
| * @param index the column index |
| * @param font the new font (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 3.0 |
| */ |
| public void setFont (int columnIndex, Font font) { |
| checkWidget (); |
| if (font != null && font.isDisposed ()) { |
| SWT.error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| |
| int validColumnCount = Math.max (1, parent.columns.length); |
| if (!(0 <= columnIndex && columnIndex < validColumnCount)) return; |
| if (cellFonts == null) { |
| if (font == null) return; |
| cellFonts = new Font [validColumnCount]; |
| } |
| Font oldFont = cellFonts [columnIndex]; |
| if (oldFont == font) return; |
| cellFonts [columnIndex] = font; |
| if (oldFont != null && oldFont.equals (font)) return; |
| if ((parent.getStyle () & SWT.VIRTUAL) != 0) cached = true; |
| |
| /* recompute cached values for string measurements */ |
| GC gc = new GC (parent); |
| gc.setFont (getFont (columnIndex, false)); |
| if (fontHeights == null) fontHeights = new int [validColumnCount]; |
| fontHeights [columnIndex] = gc.getFontMetrics ().getHeight (); |
| computeDisplayText (columnIndex, gc); |
| gc.dispose (); |
| |
| if (isInViewport ()) { |
| Rectangle bounds = getCellBounds (columnIndex); |
| parent.redraw (bounds.x, bounds.y, bounds.width, bounds.height, false); |
| } |
| } |
| /** |
| * 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) |
| * |
| * @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); |
| } |
| Color oldColor = foreground; |
| if (oldColor == color) return; |
| foreground = color; |
| if (oldColor != null && oldColor.equals (color)) return; |
| if ((parent.getStyle () & SWT.VIRTUAL) != 0) cached = true; |
| redrawItem (); |
| } |
| /** |
| * Sets the foreground color at the given column index in the receiver |
| * to the color specified by the argument, or to the default system color for the item |
| * if the argument is null. |
| * |
| * @param index the column index |
| * @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 3.0 |
| */ |
| public void setForeground (int columnIndex, Color color) { |
| checkWidget (); |
| if (color != null && color.isDisposed ()) { |
| SWT.error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| int validColumnCount = Math.max (1, parent.columns.length); |
| if (!(0 <= columnIndex && columnIndex < validColumnCount)) return; |
| if (cellForegrounds == null) { |
| if (color == null) return; |
| cellForegrounds = new Color [validColumnCount]; |
| } |
| Color oldColor = cellForegrounds [columnIndex]; |
| if (oldColor == color) return; |
| cellForegrounds [columnIndex] = color; |
| if (oldColor != null && oldColor.equals (color)) return; |
| if ((parent.getStyle () & SWT.VIRTUAL) != 0) cached = true; |
| |
| if (isInViewport ()) { |
| redraw ( |
| getTextX (columnIndex), |
| parent.getItemY (this), |
| textWidths [columnIndex] + 2 * MARGIN_TEXT, |
| parent.itemHeight, |
| columnIndex); |
| } |
| } |
| /** |
| * Sets the grayed state of the checkbox for this item. This state change |
| * only applies if the Table was created with the SWT.CHECK style. |
| * |
| * @param grayed the new grayed state of the checkbox; |
| * |
| * @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 value) { |
| checkWidget (); |
| if ((parent.getStyle () & SWT.CHECK) == 0) return; |
| if (grayed == value) return; |
| grayed = value; |
| if ((parent.getStyle () & SWT.VIRTUAL) != 0) cached = true; |
| |
| if (isInViewport ()) { |
| Rectangle bounds = getCheckboxBounds (); |
| parent.redraw (bounds.x, bounds.y, bounds.width, bounds.height, false); |
| } |
| } |
| @Override |
| public void setImage (Image value) { |
| checkWidget (); |
| setImage (0, value); |
| } |
| /** |
| * Sets the image for multiple columns in the table. |
| * |
| * @param images the array of new images |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the array of images is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if one of the images 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 setImage (Image[] value) { |
| checkWidget (); |
| if (value == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| |
| // TODO make a smarter implementation of this |
| for (int i = 0; i < value.length; i++) { |
| if (value [i] != null) setImage (i, value [i]); |
| } |
| } |
| /** |
| * Sets the receiver's image at a column. |
| * |
| * @param index the column index |
| * @param image the new image |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the image 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 setImage (int columnIndex, Image value) { |
| checkWidget (); |
| if (value != null && value.isDisposed ()) SWT.error (SWT.ERROR_INVALID_ARGUMENT); |
| |
| CTableColumn[] columns = parent.columns; |
| int validColumnCount = Math.max (1, columns.length); |
| if (!(0 <= columnIndex && columnIndex < validColumnCount)) return; |
| Image image = getImage (columnIndex, false); |
| if (value == image) return; |
| if (value != null && value.equals (image)) return; |
| if (columnIndex == 0) { |
| super.setImage (value); |
| } else { |
| images [columnIndex] = value; |
| } |
| if ((parent.getStyle () & SWT.VIRTUAL) != 0) cached = true; |
| |
| /* |
| * An image width change may affect the space available for the item text, so |
| * recompute the displayText if there are columns. |
| */ |
| if (columns.length > 0) { |
| GC gc = new GC (parent); |
| gc.setFont (getFont (columnIndex, false)); |
| computeDisplayText (columnIndex, gc); |
| gc.dispose (); |
| } |
| |
| if (value == null) { |
| redrawItem (); // TODO why the whole item? |
| return; |
| } |
| |
| /* |
| * If this is the first image being put into the table then its item height |
| * may be adjusted, in which case a full redraw is needed. |
| */ |
| if (parent.imageHeight == 0) { |
| int oldItemHeight = parent.itemHeight; |
| parent.setImageHeight (value.getBounds ().height); |
| if (oldItemHeight != parent.itemHeight) { |
| if (columnIndex == 0) { |
| parent.col0ImageWidth = value.getBounds ().width; |
| if (columns.length > 0) { |
| /* |
| * All column 0 cells will now have less room available for their texts, |
| * so all items must now recompute their column 0 displayTexts. |
| */ |
| GC gc = new GC (parent); |
| CTableItem[] rootItems = parent.items; |
| for (int i = 0; i < parent.itemsCount; i++) { |
| rootItems [i].updateColumnWidth (columns [0], gc); |
| } |
| gc.dispose (); |
| } |
| } |
| parent.redraw (); |
| return; |
| } |
| } |
| |
| /* |
| * If this is the first image being put into column 0 then all cells |
| * in the column should also indent accordingly. |
| */ |
| if (columnIndex == 0 && parent.col0ImageWidth == 0) { |
| parent.col0ImageWidth = value.getBounds ().width; |
| /* redraw the column */ |
| if (columns.length == 0) { |
| parent.redraw (); |
| } else { |
| /* |
| * All column 0 cells will now have less room available for their texts, |
| * so all items must now recompute their column 0 displayTexts. |
| */ |
| GC gc = new GC (parent); |
| CTableItem[] rootItems = parent.items; |
| for (int i = 0; i < parent.itemsCount; i++) { |
| rootItems [i].updateColumnWidth (columns [0], gc); |
| } |
| gc.dispose (); |
| parent.redraw ( |
| columns [0].getX (), 0, |
| columns [0].width, |
| parent.clientArea.height, |
| false); |
| } |
| return; |
| } |
| redrawItem (); // TODO why the whole item? |
| } |
| /** |
| * Sets the indent of the first column's image, expressed in terms of the image's width. |
| * |
| * @param indent the new indent |
| * |
| * </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> |
| * |
| * @deprecated this functionality is not supported on most platforms |
| */ |
| @Deprecated |
| public void setImageIndent (int indent) { |
| checkWidget(); |
| if (indent < 0) return; |
| if (imageIndent == indent) return; |
| imageIndent = indent; |
| if ((parent.getStyle () & SWT.VIRTUAL) != 0) cached = true; |
| } |
| /** |
| * Sets the receiver's text at a column |
| * |
| * @param index the column index |
| * @param string the new text |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the text 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 void setText (int columnIndex, String value) { |
| checkWidget (); |
| if (value == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| int validColumnCount = Math.max (1, parent.columns.length); |
| if (!(0 <= columnIndex && columnIndex < validColumnCount)) return; |
| if (value.equals (getText (columnIndex, false))) return; |
| if (columnIndex == 0) { |
| super.setText (value); |
| } else { |
| texts [columnIndex] = value; |
| } |
| if ((parent.getStyle () & SWT.VIRTUAL) != 0) cached = true; |
| |
| int oldWidth = textWidths [columnIndex]; |
| GC gc = new GC (parent); |
| gc.setFont (getFont (columnIndex, false)); |
| computeDisplayText (columnIndex, gc); |
| gc.dispose (); |
| |
| if (parent.columns.length == 0) { |
| Rectangle bounds = getBounds (false); |
| int rightX = bounds.x + bounds.width; |
| parent.updateHorizontalBar (rightX, textWidths [columnIndex] - oldWidth); |
| } |
| if (isInViewport ()) { |
| redraw ( |
| getTextX (columnIndex), |
| parent.getItemY (this), |
| Math.max (oldWidth, textWidths [columnIndex]) + 2 * MARGIN_TEXT, |
| parent.itemHeight, |
| columnIndex); |
| } |
| } |
| @Override |
| public void setText (String value) { |
| checkWidget (); |
| Rectangle bounds = getBounds (false); |
| int oldRightX = bounds.x + bounds.width; |
| setText (0, value); |
| /* horizontal bar could be affected if table has no columns */ |
| if (parent.columns.length == 0) { |
| bounds = getBounds (false); |
| int newRightX = bounds.x + bounds.width; |
| parent.updateHorizontalBar (newRightX, newRightX - oldRightX); |
| } |
| } |
| /** |
| * Sets the text for multiple columns in the table. |
| * |
| * @param strings the array of new strings |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the text 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 void setText (String[] value) { |
| checkWidget (); |
| if (value == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| Rectangle bounds = getBounds (false); |
| int oldRightX = bounds.x + bounds.width; |
| // TODO make a smarter implementation of this |
| for (int i = 0; i < value.length; i++) { |
| if (value [i] != null) setText (i, value [i]); |
| } |
| /* horizontal bar could be affected if table has no columns */ |
| if (parent.columns.length == 0) { |
| bounds = getBounds (false); |
| int newRightX = bounds.x + bounds.width; |
| parent.updateHorizontalBar (newRightX, newRightX - oldRightX); |
| } |
| } |
| /* |
| * Perform any internal changes necessary to reflect a changed column width. |
| */ |
| void updateColumnWidth (CTableColumn column, GC gc) { |
| int columnIndex = column.getIndex (); |
| gc.setFont (getFont (columnIndex, false)); |
| String oldDisplayText = displayTexts [columnIndex]; |
| computeDisplayText (columnIndex, gc); |
| |
| /* the cell must be damaged if there is custom drawing being done or if the alignment is not LEFT */ |
| if (isInViewport ()) { |
| boolean columnIsLeft = (column.getStyle () & SWT.LEFT) != 0; |
| if (!columnIsLeft || parent.isListening (SWT.EraseItem) || parent.isListening (SWT.PaintItem)) { |
| Rectangle cellBounds = getCellBounds (columnIndex); |
| parent.redraw (cellBounds.x, cellBounds.y, cellBounds.width, cellBounds.height, false); |
| return; |
| } |
| /* if the display text has changed then the cell text must be damaged in order to repaint */ |
| if (oldDisplayText == null || !oldDisplayText.equals (displayTexts [columnIndex])) { |
| Rectangle cellBounds = getCellBounds (columnIndex); |
| int textX = getTextX (columnIndex); |
| parent.redraw (textX, cellBounds.y, cellBounds.x + cellBounds.width - textX, cellBounds.height, false); |
| } |
| } |
| } |
| /* |
| * The parent's font has changed, so if this font was being used by the receiver then |
| * recompute its cached text sizes using the gc argument. |
| */ |
| void updateFont (GC gc) { |
| if (font == null) { /* receiver is using the Table's font */ |
| computeDisplayTexts (gc); |
| computeTextWidths (gc); |
| } |
| } |
| } |