| /******************************************************************************* |
| * Copyright (c) 2006, 2008 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 Schindl <tom.schindl@bestsolution.at> - initial API and implementation |
| * - fix in bug: 174355,171126,,195908,198035,215069 |
| *******************************************************************************/ |
| |
| package org.eclipse.jface.viewers; |
| |
| import java.util.LinkedList; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.Font; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.Tree; |
| import org.eclipse.swt.widgets.TreeItem; |
| import org.eclipse.swt.widgets.Widget; |
| |
| /** |
| * TreeViewerRow is the Tree implementation of ViewerRow. |
| * |
| * @since 3.3 |
| * |
| */ |
| public class TreeViewerRow extends ViewerRow { |
| private TreeItem item; |
| |
| /** |
| * Create a new instance of the receiver. |
| * |
| * @param item |
| */ |
| TreeViewerRow(TreeItem item) { |
| this.item = item; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#getBounds(int) |
| */ |
| public Rectangle getBounds(int columnIndex) { |
| return item.getBounds(columnIndex); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#getBounds() |
| */ |
| public Rectangle getBounds() { |
| return item.getBounds(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#getColumnCount() |
| */ |
| public int getColumnCount() { |
| return item.getParent().getColumnCount(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#getItem() |
| */ |
| public Widget getItem() { |
| return item; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#getBackground(int) |
| */ |
| public Color getBackground(int columnIndex) { |
| return item.getBackground(columnIndex); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#getFont(int) |
| */ |
| public Font getFont(int columnIndex) { |
| return item.getFont(columnIndex); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#getForeground(int) |
| */ |
| public Color getForeground(int columnIndex) { |
| return item.getForeground(columnIndex); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#getImage(int) |
| */ |
| public Image getImage(int columnIndex) { |
| return item.getImage(columnIndex); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#getText(int) |
| */ |
| public String getText(int columnIndex) { |
| return item.getText(columnIndex); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#setBackground(int, |
| * org.eclipse.swt.graphics.Color) |
| */ |
| public void setBackground(int columnIndex, Color color) { |
| item.setBackground(columnIndex, color); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#setFont(int, |
| * org.eclipse.swt.graphics.Font) |
| */ |
| public void setFont(int columnIndex, Font font) { |
| item.setFont(columnIndex, font); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#setForeground(int, |
| * org.eclipse.swt.graphics.Color) |
| */ |
| public void setForeground(int columnIndex, Color color) { |
| item.setForeground(columnIndex, color); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#setImage(int, |
| * org.eclipse.swt.graphics.Image) |
| */ |
| public void setImage(int columnIndex, Image image) { |
| Image oldImage = item.getImage(columnIndex); |
| if (image != oldImage) { |
| item.setImage(columnIndex, image); |
| } |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#setText(int, java.lang.String) |
| */ |
| public void setText(int columnIndex, String text) { |
| item.setText(columnIndex, text == null ? "" : text); //$NON-NLS-1$ |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ViewerRow#getControl() |
| */ |
| public Control getControl() { |
| return item.getParent(); |
| } |
| |
| public ViewerRow getNeighbor(int direction, boolean sameLevel) { |
| if (direction == ViewerRow.ABOVE) { |
| return getRowAbove(sameLevel); |
| } else if (direction == ViewerRow.BELOW) { |
| return getRowBelow(sameLevel); |
| } else { |
| throw new IllegalArgumentException( |
| "Illegal value of direction argument."); //$NON-NLS-1$ |
| } |
| } |
| |
| private ViewerRow getRowBelow(boolean sameLevel) { |
| Tree tree = item.getParent(); |
| |
| // This means we have top-level item |
| if (item.getParentItem() == null) { |
| if (sameLevel || !item.getExpanded()) { |
| int index = tree.indexOf(item) + 1; |
| |
| if (index < tree.getItemCount()) { |
| return new TreeViewerRow(tree.getItem(index)); |
| } |
| } else if (item.getExpanded() && item.getItemCount() > 0) { |
| return new TreeViewerRow(item.getItem(0)); |
| } |
| } else { |
| if (sameLevel || !item.getExpanded()) { |
| TreeItem parentItem = item.getParentItem(); |
| |
| int nextIndex = parentItem.indexOf(item) + 1; |
| int totalIndex = parentItem.getItemCount(); |
| |
| TreeItem itemAfter; |
| |
| // This would mean that it was the last item |
| if (nextIndex == totalIndex) { |
| itemAfter = findNextItem(parentItem); |
| } else { |
| itemAfter = parentItem.getItem(nextIndex); |
| } |
| |
| if (itemAfter != null) { |
| return new TreeViewerRow(itemAfter); |
| } |
| |
| } else if (item.getExpanded() && item.getItemCount() > 0) { |
| return new TreeViewerRow(item.getItem(0)); |
| } |
| } |
| |
| return null; |
| } |
| |
| private ViewerRow getRowAbove(boolean sameLevel) { |
| Tree tree = item.getParent(); |
| |
| // This means we have top-level item |
| if (item.getParentItem() == null) { |
| int index = tree.indexOf(item) - 1; |
| TreeItem nextTopItem = null; |
| |
| if (index >= 0) { |
| nextTopItem = tree.getItem(index); |
| } |
| |
| if (nextTopItem != null) { |
| if (sameLevel) { |
| return new TreeViewerRow(nextTopItem); |
| } |
| |
| return new TreeViewerRow(findLastVisibleItem(nextTopItem)); |
| } |
| } else { |
| TreeItem parentItem = item.getParentItem(); |
| int previousIndex = parentItem.indexOf(item) - 1; |
| |
| TreeItem itemBefore; |
| if (previousIndex >= 0) { |
| if (sameLevel) { |
| itemBefore = parentItem.getItem(previousIndex); |
| } else { |
| itemBefore = findLastVisibleItem(parentItem |
| .getItem(previousIndex)); |
| } |
| } else { |
| itemBefore = parentItem; |
| } |
| |
| if (itemBefore != null) { |
| return new TreeViewerRow(itemBefore); |
| } |
| } |
| |
| return null; |
| } |
| |
| private TreeItem findLastVisibleItem(TreeItem parentItem) { |
| TreeItem rv = parentItem; |
| |
| while (rv.getExpanded() && rv.getItemCount() > 0) { |
| rv = rv.getItem(rv.getItemCount() - 1); |
| } |
| |
| return rv; |
| } |
| |
| private TreeItem findNextItem(TreeItem item) { |
| TreeItem rv = null; |
| Tree tree = item.getParent(); |
| TreeItem parentItem = item.getParentItem(); |
| |
| int nextIndex; |
| int totalItems; |
| |
| if (parentItem == null) { |
| nextIndex = tree.indexOf(item) + 1; |
| totalItems = tree.getItemCount(); |
| } else { |
| nextIndex = parentItem.indexOf(item) + 1; |
| totalItems = parentItem.getItemCount(); |
| } |
| |
| // This is once more the last item in the tree |
| // Search on |
| if (nextIndex == totalItems) { |
| if (item.getParentItem() != null) { |
| rv = findNextItem(item.getParentItem()); |
| } |
| } else { |
| if (parentItem == null) { |
| rv = tree.getItem(nextIndex); |
| } else { |
| rv = parentItem.getItem(nextIndex); |
| } |
| } |
| |
| return rv; |
| } |
| |
| public TreePath getTreePath() { |
| TreeItem tItem = item; |
| LinkedList segments = new LinkedList(); |
| while (tItem != null) { |
| Object segment = tItem.getData(); |
| Assert.isNotNull(segment); |
| segments.addFirst(segment); |
| tItem = tItem.getParentItem(); |
| } |
| |
| return new TreePath(segments.toArray()); |
| } |
| |
| void setItem(TreeItem item) { |
| this.item = item; |
| } |
| |
| public Object clone() { |
| return new TreeViewerRow(item); |
| } |
| |
| public Object getElement() { |
| return item.getData(); |
| } |
| |
| public int getVisualIndex(int creationIndex) { |
| int[] order = item.getParent().getColumnOrder(); |
| |
| for (int i = 0; i < order.length; i++) { |
| if (order[i] == creationIndex) { |
| return i; |
| } |
| } |
| |
| return super.getVisualIndex(creationIndex); |
| } |
| |
| public int getCreationIndex(int visualIndex) { |
| if( item != null && ! item.isDisposed() && hasColumns() && isValidOrderIndex(visualIndex) ) { |
| return item.getParent().getColumnOrder()[visualIndex]; |
| } |
| return super.getCreationIndex(visualIndex); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ViewerRow#getTextBounds(int) |
| */ |
| public Rectangle getTextBounds(int index) { |
| return item.getTextBounds(index); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ViewerRow#getImageBounds(int) |
| */ |
| public Rectangle getImageBounds(int index) { |
| return item.getImageBounds(index); |
| } |
| |
| private boolean hasColumns() { |
| return this.item.getParent().getColumnCount() != 0; |
| } |
| |
| private boolean isValidOrderIndex(int currentIndex) { |
| return currentIndex < this.item.getParent().getColumnOrder().length; |
| } |
| } |