001/* 002 * This library is part of OpenCms - 003 * the Open Source Content Management System 004 * 005 * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com) 006 * 007 * This library is free software; you can redistribute it and/or 008 * modify it under the terms of the GNU Lesser General Public 009 * License as published by the Free Software Foundation; either 010 * version 2.1 of the License, or (at your option) any later version. 011 * 012 * This library is distributed in the hope that it will be useful, 013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 015 * Lesser General Public License for more details. 016 * 017 * For further information about Alkacon Software, please see the 018 * company website: http://www.alkacon.com 019 * 020 * For further information about OpenCms, please see the 021 * project website: http://www.opencms.org 022 * 023 * You should have received a copy of the GNU Lesser General Public 024 * License along with this library; if not, write to the Free Software 025 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 026 */ 027 028package org.opencms.gwt.client.ui; 029 030import org.opencms.gwt.client.dnd.I_CmsDropTarget; 031import org.opencms.gwt.client.ui.css.I_CmsLayoutBundle; 032import org.opencms.gwt.client.util.CmsDomUtil; 033 034import com.google.common.base.Optional; 035import com.google.gwt.dom.client.Element; 036import com.google.gwt.user.client.ui.Composite; 037import com.google.gwt.user.client.ui.Widget; 038 039/** 040 * Provides a UI list item.<p> 041 * 042 * @since 8.0.0 043 */ 044public class CmsSimpleListItem extends Composite implements I_CmsListItem { 045 046 /** The logical id, it is not the HTML id. */ 047 protected String m_id; 048 049 /** The underlying panel. */ 050 protected CmsFlowPanel m_panel; 051 052 /** 053 * Constructor.<p> 054 */ 055 public CmsSimpleListItem() { 056 057 m_panel = new CmsFlowPanel(CmsDomUtil.Tag.li.name()); 058 m_panel.setStyleName(I_CmsLayoutBundle.INSTANCE.listTreeCss().listTreeItem()); 059 initWidget(m_panel); 060 } 061 062 /** 063 * Constructor.<p> 064 * 065 * @param widget the widget to use 066 */ 067 public CmsSimpleListItem(CmsListItemWidget widget) { 068 069 this(); 070 add(widget); 071 } 072 073 /** 074 * @see org.opencms.gwt.client.ui.I_CmsListItem#add(com.google.gwt.user.client.ui.Widget) 075 */ 076 public void add(Widget w) { 077 078 m_panel.add(w); 079 } 080 081 /** 082 * @see org.opencms.gwt.client.dnd.I_CmsDraggable#getCursorOffsetDelta() 083 */ 084 public Optional<int[]> getCursorOffsetDelta() { 085 086 return Optional.absent(); 087 } 088 089 /** 090 * @see org.opencms.gwt.client.dnd.I_CmsDraggable#getDragHelper(org.opencms.gwt.client.dnd.I_CmsDropTarget) 091 */ 092 public Element getDragHelper(org.opencms.gwt.client.dnd.I_CmsDropTarget target) { 093 094 // TODO: Auto-generated method stub 095 return null; 096 } 097 098 /** 099 * @see org.opencms.gwt.client.ui.I_CmsListItem#getId() 100 */ 101 public String getId() { 102 103 return m_id; 104 } 105 106 /** 107 * @see org.opencms.gwt.client.dnd.I_CmsDraggable#getParentTarget() 108 */ 109 public I_CmsDropTarget getParentTarget() { 110 111 // TODO: Auto-generated method stub 112 return null; 113 } 114 115 /** 116 * @see org.opencms.gwt.client.dnd.I_CmsDraggable#getPlaceholder(org.opencms.gwt.client.dnd.I_CmsDropTarget) 117 */ 118 public Element getPlaceholder(org.opencms.gwt.client.dnd.I_CmsDropTarget target) { 119 120 // TODO: Auto-generated method stub 121 return null; 122 } 123 124 /** 125 * Returns the child widget with the given index.<p> 126 * 127 * @param index the index 128 * 129 * @return the child widget 130 */ 131 public Widget getWidget(int index) { 132 133 return m_panel.getWidget(index); 134 } 135 136 /** 137 * @see org.opencms.gwt.client.dnd.I_CmsDraggable#onDragCancel() 138 */ 139 public void onDragCancel() { 140 141 // TODO: Auto-generated method stub 142 143 } 144 145 /** 146 * @see org.opencms.gwt.client.dnd.I_CmsDraggable#onDrop(org.opencms.gwt.client.dnd.I_CmsDropTarget) 147 */ 148 public void onDrop(org.opencms.gwt.client.dnd.I_CmsDropTarget target) { 149 150 // TODO: Auto-generated method stub 151 152 } 153 154 /** 155 * @see org.opencms.gwt.client.dnd.I_CmsDraggable#onStartDrag(org.opencms.gwt.client.dnd.I_CmsDropTarget) 156 */ 157 public void onStartDrag(org.opencms.gwt.client.dnd.I_CmsDropTarget target) { 158 159 // TODO: Auto-generated method stub 160 161 } 162 163 /** 164 * @see org.opencms.gwt.client.ui.I_CmsListItem#setId(java.lang.String) 165 */ 166 public void setId(String id) { 167 168 m_id = id; 169 } 170 171 /** 172 * @see org.opencms.gwt.client.ui.I_CmsTruncable#truncate(java.lang.String, int) 173 */ 174 public void truncate(String textMetricsPrefix, int widgetWidth) { 175 176 for (Widget widget : m_panel) { 177 if (!(widget instanceof I_CmsTruncable)) { 178 continue; 179 } 180 int width = widgetWidth - 4; // just to be on the safe side 181 if (widget instanceof CmsList<?>) { 182 width -= 25; // 25px left margin 183 } 184 ((I_CmsTruncable)widget).truncate(textMetricsPrefix, width); 185 } 186 } 187 188}