Mercurial > projects > dwt-addons
view dwtx/jface/viewers/ListViewer.d @ 104:04b47443bb01
Reworked the collection uses to make use of a wrapper collection that is compatible to the Java Collections.
These new wrappers now use the tango.util.containers instead of the tango.util.collections.
author | Frank Benoit <benoit@tionex.de> |
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date | Thu, 07 Aug 2008 15:01:33 +0200 |
parents | 7ffeace6c47f |
children |
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/******************************************************************************* * Copyright (c) 2000, 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 * Brad Reynolds - bug 141435 * Tom Schindl <tom.schindl@bestsolution.at> - bug 157309, 177619 * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwtx.jface.viewers.ListViewer; import dwtx.jface.viewers.AbstractListViewer; import dwt.DWT; import dwt.graphics.Rectangle; import dwt.widgets.Composite; import dwt.widgets.Control; static import dwt.widgets.List; import dwtx.core.runtime.Assert; import dwt.dwthelper.utils; import dwtx.dwtxhelper.Collection; /** * A concrete viewer based on an DWT <code>List</code> control. * <p> * This class is not intended to be subclassed. It is designed to be * instantiated with a pre-existing DWT <code>List</code> control and configured * with a domain-specific content provider, label provider, element filter (optional), * and element sorter (optional). * <p> * Note that the DWT <code>List</code> control only supports the display of strings, not icons. * If you need to show icons for items, use <code>TableViewer</code> instead. * </p> * * @see TableViewer * @noextend This class is not intended to be subclassed by clients. */ public class ListViewer : AbstractListViewer { alias AbstractListViewer.setSelectionToWidget setSelectionToWidget; /** * This viewer's list control. */ private dwt.widgets.List.List list; /** * Creates a list viewer on a newly-created list control under the given parent. * The list control is created using the DWT style bits <code>MULTI, H_SCROLL, V_SCROLL,</code> and <code>BORDER</code>. * The viewer has no input, no content provider, a default label provider, * no sorter, and no filters. * * @param parent the parent control */ public this(Composite parent) { this(parent, DWT.MULTI | DWT.H_SCROLL | DWT.V_SCROLL | DWT.BORDER); } /** * Creates a list viewer on a newly-created list control under the given parent. * The list control is created using the given DWT style bits. * The viewer has no input, no content provider, a default label provider, * no sorter, and no filters. * * @param parent the parent control * @param style the DWT style bits */ public this(Composite parent, int style) { this(new dwt.widgets.List.List(parent, style)); } /** * Creates a list viewer on the given list control. * The viewer has no input, no content provider, a default label provider, * no sorter, and no filters. * * @param list the list control */ public this(dwt.widgets.List.List list) { this.list = list; hookControl(list); } /* (non-Javadoc) * Method declared on Viewer. */ public override Control getControl() { return list; } /** * Returns this list viewer's list control. * * @return the list control */ public dwt.widgets.List.List getList() { return list; } /* * Non-Javadoc. * Method defined on StructuredViewer. */ public override void reveal(Object element) { Assert.isNotNull(element); int index = getElementIndex(element); if (index is -1) { return; } // algorithm patterned after List.showSelection() int count = list.getItemCount(); if (count is 0) { return; } int height = list.getItemHeight(); Rectangle rect = list.getClientArea(); int topIndex = list.getTopIndex(); int visibleCount = Math.max(rect.height / height, 1); int bottomIndex = Math.min(topIndex + visibleCount, count) - 1; if ((topIndex <= index) && (index <= bottomIndex)) { return; } int newTop = Math.min(Math.max(index - (visibleCount / 2), 0), count - 1); list.setTopIndex(newTop); } /* (non-Javadoc) * @see dwtx.jface.viewers.AbstractListViewer#listAdd(java.lang.String, int) */ protected override void listAdd(String string, int index) { list.add(string, index); } /* (non-Javadoc) * @see dwtx.jface.viewers.AbstractListViewer#listSetItem(int, java.lang.String) */ protected override void listSetItem(int index, String string) { list.setItem(index, string); } /* (non-Javadoc) * @see dwtx.jface.viewers.AbstractListViewer#listGetSelectionIndices() */ protected override int[] listGetSelectionIndices() { return list.getSelectionIndices(); } /* (non-Javadoc) * @see dwtx.jface.viewers.AbstractListViewer#listGetItemCount() */ protected override int listGetItemCount() { return list.getItemCount(); } /* (non-Javadoc) * @see dwtx.jface.viewers.AbstractListViewer#listSetItems(java.lang.String[]) */ protected override void listSetItems(String[] labels) { list.setItems(labels); } /* (non-Javadoc) * @see dwtx.jface.viewers.AbstractListViewer#listRemoveAll() */ protected override void listRemoveAll() { list.removeAll(); } /* (non-Javadoc) * @see dwtx.jface.viewers.AbstractListViewer#listRemove(int) */ protected override void listRemove(int index) { list.remove(index); } /* (non-Javadoc) * @see dwtx.jface.viewers.AbstractListViewer#listSelectAndShow(int[]) */ protected override void listSetSelection(int[] ixs) { list.setSelection(ixs); } /* (non-Javadoc) * @see dwtx.jface.viewers.AbstractListViewer#listDeselectAll() */ protected override void listDeselectAll() { list.deselectAll(); } /* (non-Javadoc) * @see dwtx.jface.viewers.AbstractListViewer#listShowSelection() */ protected override void listShowSelection() { list.showSelection(); } /* (non-Javadoc) * @see dwtx.jface.viewers.AbstractListViewer#listGetTopIndex() */ protected override int listGetTopIndex() { return list.getTopIndex(); } /* * (non-Javadoc) * @see dwtx.jface.viewers.AbstractListViewer#listSetTopIndex(int) */ protected override void listSetTopIndex(int index) { list.setTopIndex(index); } /* (non-Javadoc) * @see dwtx.jface.viewers.AbstractListViewer#setSelectionToWidget(java.util.List, bool) */ protected override void setSelectionToWidget(List in_, bool reveal) { if( reveal ) { super.setSelectionToWidget(in_, reveal); } else { if (in_ is null || in_.size() is 0) { // clear selection list.deselectAll(); } else { int n = in_.size(); int[] ixs = new int[n]; int count = 0; for (int i = 0; i < n; ++i) { Object el = in_.get(i); int ix = getElementIndex(el); if (ix >= 0) { ixs[count++] = ix; } } if (count < n) { System.arraycopy(ixs, 0, ixs = new int[count], 0, count); } list.deselectAll(); list.select(ixs); } } } }