Mercurial > projects > dwt-addons
view dwtx/jface/viewers/ViewerCell.d @ 10:b6c35faf97c8
Viewers
author | Frank Benoit <benoit@tionex.de> |
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date | Mon, 31 Mar 2008 00:47:19 +0200 |
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children | 46a6e0e6ccd4 |
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/******************************************************************************* * Copyright (c) 2006, 2007 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 * Tom Shindl <tom.schindl@bestsolution.at> - initial API and implementation * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwtx.jface.viewers.ViewerCell; import dwtx.jface.viewers.ViewerRow; import dwt.graphics.Color; import dwt.graphics.Font; import dwt.graphics.Image; import dwt.graphics.Rectangle; import dwt.widgets.Control; import dwt.widgets.Item; import dwt.widgets.Widget; import dwt.dwthelper.utils; /** * The ViewerCell is the JFace representation of a cell entry in a ViewerRow. * * @since 3.3 * */ public class ViewerCell { private int columnIndex; private ViewerRow row; private Object element; /** * Constant denoting the cell above current one (value is 1). */ public static int ABOVE = 1; /** * Constant denoting the cell below current one (value is 2). */ public static int BELOW = 1 << 1; /** * Constant denoting the cell to the left of the current one (value is 4). */ public static int LEFT = 1 << 2; /** * Constant denoting the cell to the right of the current one (value is 8). */ public static int RIGHT = 1 << 3; /** * Create a new instance of the receiver on the row. * * @param row * @param columnIndex */ this(ViewerRow row, int columnIndex, Object element) { this.row = row; this.columnIndex = columnIndex; this.element = element; } /** * Get the index of the cell. * * @return the index */ public int getColumnIndex() { return columnIndex; } /** * Get the bounds of the cell. * * @return {@link Rectangle} */ public Rectangle getBounds() { return row.getBounds(columnIndex); } /** * Get the element this row represents. * * @return {@link Object} */ public Object getElement() { if (element !is null) { return element; } return row.getElement(); } /** * Return the text for the cell. * * @return {@link String} */ public String getText() { return row.getText(columnIndex); } /** * Return the Image for the cell. * * @return {@link Image} or <code>null</code> */ public Image getImage() { return row.getImage(columnIndex); } /** * Set the background color of the cell. * * @param background */ public void setBackground(Color background) { row.setBackground(columnIndex, background); } /** * Set the foreground color of the cell. * * @param foreground */ public void setForeground(Color foreground) { row.setForeground(columnIndex, foreground); } /** * Set the font of the cell. * * @param font */ public void setFont(Font font) { row.setFont(columnIndex, font); } /** * Set the text for the cell. * * @param text */ public void setText(String text) { row.setText(columnIndex, text); } /** * Set the Image for the cell. * * @param image */ public void setImage(Image image) { row.setImage(columnIndex, image); } /** * Set the columnIndex. * * @param column */ void setColumn(int column) { columnIndex = column; } /** * Set the row to rowItem and the columnIndex to column. * * @param rowItem * @param column */ void update(ViewerRow rowItem, int column, Object element) { row = rowItem; columnIndex = column; this.element = element; } /** * Return the item for the receiver. * * @return {@link Item} */ public Widget getItem() { return row.getItem(); } /** * Get the control for this cell. * * @return {@link Control} */ public Control getControl() { return row.getControl(); } /** * Returns the specified neighbor of this cell, or <code>null</code> if no * neighbor exists in the given direction. Direction constants can be * combined by bitwise OR; for example, this method will return the cell to * the upper-left of the current cell by passing {@link #ABOVE} | * {@link #LEFT}. If <code>sameLevel</code> is <code>true</code>, only * cells in sibling rows (under the same parent) will be considered. * * @param directionMask * the direction mask used to identify the requested neighbor * cell * @param sameLevel * if <code>true</code>, only consider cells from sibling rows * @return the requested neighbor cell, or <code>null</code> if not found */ public ViewerCell getNeighbor(int directionMask, bool sameLevel) { ViewerRow row; int columnIndex; if ((directionMask & ABOVE) is ABOVE) { row = this.row.getNeighbor(ViewerRow.ABOVE, sameLevel); } else if ((directionMask & BELOW) is BELOW) { row = this.row.getNeighbor(ViewerRow.BELOW, sameLevel); } else { row = this.row; } if (row !is null) { if ((directionMask & LEFT) is LEFT) { columnIndex = getColumnIndex() - 1; } else if ((directionMask & RIGHT) is RIGHT) { columnIndex = getColumnIndex() + 1; } else { columnIndex = getColumnIndex(); } if (columnIndex >= 0 && columnIndex < row.getColumnCount()) { return row.getCell(columnIndex); } } return null; } /** * @return the row */ public ViewerRow getViewerRow() { return row; } /* (non-Javadoc) * @see java.lang.Object#hashCode() */ public override hash_t toHash() { const int prime = 31; int result = 1; result = prime * result + columnIndex; result = prime * result + ((row is null) ? 0 : row.toHash()); return result; } /* (non-Javadoc) * @see java.lang.Object#equals(java.lang.Object) */ public override int opEquals(Object obj) { if (this is obj) return true; if (obj is null) return false; if (this.classinfo !is obj.classinfo ) return false; ViewerCell other = cast(ViewerCell) obj; if (columnIndex !is other.columnIndex) return false; if (row is null) { if (other.row !is null) return false; } else if (!row.opEquals(other.row)) return false; return true; } }