org.eclipse.jst.pagedesigner/src/org/eclipse/jst/pagedesigner/actions/table/TableActionGroup.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2006 Sybase, Inc. and others.\r
   3  *\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     Sybase, Inc. - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.eclipse.jst.pagedesigner.actions.table;\r
  13 \r
  14 import org.eclipse.gef.EditPart;\r
  15 import org.eclipse.jface.action.Action;\r
  16 import org.eclipse.jface.action.IMenuListener;\r
  17 import org.eclipse.jface.action.IMenuManager;\r
  18 import org.eclipse.jface.action.MenuManager;\r
  19 import org.eclipse.jface.action.Separator;\r
  20 import org.eclipse.jface.viewers.ISelection;\r
  21 import org.eclipse.jface.viewers.IStructuredSelection;\r
  22 import org.eclipse.jst.pagedesigner.PDPlugin;\r
  23 import org.eclipse.jst.pagedesigner.actions.single.SelectEditPartAction;\r
  24 import org.eclipse.jst.pagedesigner.editors.PageDesignerActionConstants;\r
  25 import org.eclipse.jst.pagedesigner.parts.ElementEditPart;\r
  26 import org.eclipse.jst.pagedesigner.range.RangeUtil;\r
  27 import org.eclipse.jst.pagedesigner.tableedit.DeleteRowColumnAction;\r
  28 import org.eclipse.jst.pagedesigner.tableedit.InsertRowColumnAction;\r
  29 import org.eclipse.jst.pagedesigner.viewer.DesignPosition;\r
  30 import org.eclipse.jst.pagedesigner.viewer.DesignRange;\r
  31 import org.eclipse.ui.actions.ActionGroup;\r
  32 import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement;\r
  33 \r
  34 /**\r
  35  * \r
  36  * @author mengbo\r
  37  * @version 1.5\r
  38  */\r
  39 /*package*/ class TableActionGroup extends ActionGroup {\r
  40         // TODO: I think there's a pattern emerging...\r
  41     private final static Action action = new Action() {\r
  42         // create an empty no-op\r
  43         };\r
  44 \r
  45         /*\r
  46          * (non-Javadoc)\r
  47          * \r
  48          * @see org.eclipse.ui.actions.ActionGroup#fillContextMenu(org.eclipse.jface.action.IMenuManager)\r
  49          */\r
  50         public void fillContextMenu(IMenuManager menu) {\r
  51                 ISelection selection = this.getContext().getSelection();\r
  52 \r
  53                 EditPart part = findCommonAncesterPart(selection);\r
  54                 if (part == null) {\r
  55                         return;\r
  56                 }\r
  57 \r
  58                 TableOperationContext context = TableOperationContext\r
  59                                 .getTableOperationContext(part);\r
  60                 if (context == null) {\r
  61                         return;\r
  62                 }\r
  63 \r
  64                 final ElementEditPart tablePart = context.getTablePart();\r
  65 \r
  66                 if (tablePart == null || !supportTableActions(tablePart)) {\r
  67                         return;\r
  68                 }\r
  69 \r
  70                 final int cellRow = context.getRowIndex();\r
  71                 final int cellColumn = context.getColumnIndex();\r
  72 \r
  73                 String tag = ((IDOMElement) tablePart.getIDOMNode()).getLocalName();\r
  74                 final IMenuManager tableMenu = new MenuManager(tag);\r
  75 \r
  76                 // ok, we passed the checking, now let's create the actions.\r
  77                 tableMenu.add(action);\r
  78                 tableMenu.addMenuListener(new IMenuListener() {\r
  79 \r
  80                         public void menuAboutToShow(IMenuManager manager) {\r
  81                                 tableMenu.removeAll();\r
  82                                 fillTableMenu(tablePart, cellRow, cellColumn, tableMenu);\r
  83                         }\r
  84                 });\r
  85                 menu.appendToGroup(PageDesignerActionConstants.GROUP_CONTAINER,\r
  86                                 tableMenu);\r
  87         }\r
  88 \r
  89         /**\r
  90          * @param tablePart\r
  91          * @param cellRow\r
  92          * @param cellColumn\r
  93          * @param tableMenu\r
  94          */\r
  95         private void fillTableMenu(ElementEditPart tablePart, int cellRow,\r
  96                         int cellColumn, IMenuManager tableMenu) {\r
  97                 SelectEditPartAction action1 = SelectEditPartAction.create(\r
  98                                 PDPlugin\r
  99                                                 .getResourceString("TableActionGroup.Submenu.SelectTable"), tablePart);//$NON-NLS-1$\r
 100                 tableMenu.add(action1);\r
 101 \r
 102                 tableMenu.add(new Separator());\r
 103 \r
 104                 {\r
 105                         InsertRowColumnAction insertRowBeforeAction = new InsertRowColumnAction(\r
 106                                         PDPlugin\r
 107                                                         .getResourceString("TableActionGroup.Submenu.InsertRowBefore"),//$NON-NLS-1$\r
 108                                         tablePart, cellRow, true, true);\r
 109                         tableMenu.add(insertRowBeforeAction);\r
 110 \r
 111                         InsertRowColumnAction insertRowAfterAction = new InsertRowColumnAction(\r
 112                                         PDPlugin\r
 113                                                         .getResourceString("TableActionGroup.Submenu.InsertRowAfter"),//$NON-NLS-1$\r
 114                                         tablePart, cellRow, true, false);\r
 115                         tableMenu.add(insertRowAfterAction);\r
 116 \r
 117                         tableMenu.add(new Separator());\r
 118                 }\r
 119 \r
 120                 {\r
 121                         InsertRowColumnAction insertColumnBeforeAction = new InsertRowColumnAction(\r
 122                                         PDPlugin\r
 123                                                         .getResourceString("TableActionGroup.Submenu.InsertColumnBefore"),//$NON-NLS-1$\r
 124                                         tablePart, cellColumn, true, true);\r
 125                         tableMenu.add(insertColumnBeforeAction);\r
 126 \r
 127                         InsertRowColumnAction insertColumnAfterAction = new InsertRowColumnAction(\r
 128                                         PDPlugin\r
 129                                                         .getResourceString("TableActionGroup.Submenu.InsertColumnAfter"),//$NON-NLS-1$\r
 130                                         tablePart, cellColumn, true, false);\r
 131                         tableMenu.add(insertColumnAfterAction);\r
 132 \r
 133                         tableMenu.add(new Separator());\r
 134                 }\r
 135 \r
 136                 {\r
 137                         DeleteRowColumnAction deleteRowAction = new DeleteRowColumnAction(\r
 138                                         PDPlugin\r
 139                                                         .getResourceString("TableActionGroup.Submenu.DeleteRow"),//$NON-NLS-1$\r
 140                                         tablePart, cellRow, true);\r
 141                         tableMenu.add(deleteRowAction);\r
 142 \r
 143                         DeleteRowColumnAction deleteColumnAction = new DeleteRowColumnAction(\r
 144                                         PDPlugin\r
 145                                                         .getResourceString("TableActionGroup.Submenu.DeleteColumn"),//$NON-NLS-1$\r
 146                                         tablePart, cellColumn, false);\r
 147                         tableMenu.add(deleteColumnAction);\r
 148                 }\r
 149         }\r
 150 \r
 151         /**\r
 152          * @param tablePart\r
 153          * @return\r
 154          */\r
 155         private boolean supportTableActions(ElementEditPart tablePart) {\r
 156             // TODO: what's the point of this method?\r
 157         // it's only used in one place and always resolves to the same value..\r
 158                 return true;\r
 159         }\r
 160 \r
 161         /**\r
 162          * Give a selection, find a single common container node as start for table\r
 163          * related operations.\r
 164          * \r
 165          * @param selection\r
 166          * @return\r
 167          */\r
 168         private EditPart findCommonAncesterPart(ISelection selection) {\r
 169                 if (selection instanceof IStructuredSelection) {\r
 170                         IStructuredSelection structsel = (IStructuredSelection) selection;\r
 171                         if (structsel.size() != 1) {\r
 172                                 return null;\r
 173                         } else if (structsel.getFirstElement() instanceof EditPart) {\r
 174                                 return (EditPart) structsel.getFirstElement();\r
 175                         } else {\r
 176                                 return null;\r
 177                         }\r
 178                 } else if (selection instanceof DesignRange) {\r
 179                         DesignRange range = (DesignRange) selection;\r
 180                         if (!range.isValid()) {\r
 181                                 return null;\r
 182                         }\r
 183                         if (range.isEmpty()) {\r
 184                                 DesignPosition position = range.getStartPosition();\r
 185                                 if (position.getOffset() == 0) {\r
 186                                         return position.getContainerPart();\r
 187                                 }\r
 188                 return position.getSiblingEditPart(true);\r
 189                         }\r
 190             return RangeUtil.findCommonAncestor(range);\r
 191                 } else {\r
 192                         return null;\r
 193                 }\r
 194         }\r
 195 \r
 196 }\r