base/runtime/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/utils/CommandUtils.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.eclipse.ui.utils;
  17
  18 import java.util.ArrayList;
  19 import java.util.HashMap;
  20 import java.util.Map;
  21
  22 import org.argeo.ArgeoException;
  23 import org.argeo.eclipse.ui.ArgeoUiPlugin;
  24 import org.eclipse.core.commands.Command;
  25 import org.eclipse.core.commands.IParameter;
  26 import org.eclipse.core.commands.Parameterization;
  27 import org.eclipse.core.commands.ParameterizedCommand;
  28 import org.eclipse.jface.action.IContributionItem;
  29 import org.eclipse.jface.action.IMenuManager;
  30 import org.eclipse.jface.resource.ImageDescriptor;
  31 import org.eclipse.swt.SWT;
  32 import org.eclipse.ui.IWorkbench;
  33 import org.eclipse.ui.IWorkbenchWindow;
  34 import org.eclipse.ui.commands.ICommandService;
  35 import org.eclipse.ui.handlers.IHandlerService;
  36 import org.eclipse.ui.menus.CommandContributionItem;
  37 import org.eclipse.ui.menus.CommandContributionItemParameter;
  38 import org.eclipse.ui.services.IServiceLocator;
  39
  40 /**
  41  * Centralizes useful and generic methods concerning eclipse commands.
  42  *
  43  */
  44 public class CommandUtils {
  45
  46         /**
  47          * Factorizes command call that is quite verbose and always the same
  48          *
  49          * NOTE that none of the parameter can be null
  50          */
  51         public static void CallCommandWithOneParameter(String commandId,
  52                         String paramId, String paramValue) {
  53                 try {
  54                         IWorkbench iw = ArgeoUiPlugin.getDefault().getWorkbench();
  55
  56                         IHandlerService handlerService = (IHandlerService) iw
  57                                         .getService(IHandlerService.class);
  58
  59                         // get the command from plugin.xml
  60                         IWorkbenchWindow window = iw.getActiveWorkbenchWindow();
  61                         ICommandService cmdService = (ICommandService) window
  62                                         .getService(ICommandService.class);
  63
  64                         Command cmd = cmdService.getCommand(commandId);
  65
  66                         ArrayList<Parameterization> parameters = new ArrayList<Parameterization>();
  67
  68                         // get the parameter
  69                         IParameter iparam = cmd.getParameter(paramId);
  70
  71                         Parameterization params = new Parameterization(iparam, paramValue);
  72                         parameters.add(params);
  73
  74                         // build the parameterized command
  75                         ParameterizedCommand pc = new ParameterizedCommand(cmd,
  76                                         parameters.toArray(new Parameterization[parameters.size()]));
  77
  78                         // execute the command
  79                         handlerService = (IHandlerService) window
  80                                         .getService(IHandlerService.class);
  81                         handlerService.executeCommand(pc, null);
  82                 } catch (Exception e) {
  83                         throw new ArgeoException("Error while calling command of id :"
  84                                         + commandId, e);
  85                 }
  86         }
  87
  88         /**
  89          * Commodities the refresh of a single command with no parameter in a
  90          * Menu.aboutToShow method to simplify further development
  91          *
  92          * @param menuManager
  93          * @param locator
  94          * @param cmdId
  95          * @param label
  96          * @param iconPath
  97          * @param showCommand
  98          */
  99         public static void refreshCommand(IMenuManager menuManager,
 100                         IServiceLocator locator, String cmdId, String label,
 101                         ImageDescriptor icon, boolean showCommand) {
 102                 refreshParametrizedCommand(menuManager, locator, cmdId, label, icon,
 103                                 showCommand, null);
 104         }
 105
 106         /**
 107          * Commodities the refresh of a single command with a map of parameters in a
 108          * Menu.aboutToShow method to simplify further development
 109          *
 110          * @param menuManager
 111          * @param locator
 112          * @param cmdId
 113          * @param label
 114          * @param iconPath
 115          * @param showCommand
 116          */
 117         public static void refreshParametrizedCommand(IMenuManager menuManager,
 118                         IServiceLocator locator, String cmdId, String label,
 119                         ImageDescriptor icon, boolean showCommand,
 120                         Map<String, String> params) {
 121                 IContributionItem ici = menuManager.find(cmdId);
 122                 if (ici != null)
 123                         menuManager.remove(ici);
 124                 CommandContributionItemParameter contributionItemParameter = new CommandContributionItemParameter(
 125                                 locator, null, cmdId, SWT.PUSH);
 126
 127                 if (showCommand) {
 128                         // Set Params
 129                         contributionItemParameter.label = label;
 130                         contributionItemParameter.icon = icon;
 131
 132                         if (params != null)
 133                                 contributionItemParameter.parameters = params;
 134
 135                         CommandContributionItem cci = new CommandContributionItem(
 136                                         contributionItemParameter);
 137                         cci.setId(cmdId);
 138                         menuManager.add(cci);
 139                 }
 140         }
 141
 142         /** Helper to call a command without parameter easily */
 143         public static void callCommand(String commandID) {
 144                 callCommand(commandID, null);
 145         }
 146
 147         /** Helper to call a command with a single parameter easily */
 148         public static void callCommand(String commandID, String parameterID,
 149                         String parameterValue) {
 150                 Map<String, String> params = new HashMap<String, String>();
 151                 params.put(parameterID, parameterValue);
 152                 callCommand(commandID, params);
 153         }
 154
 155         /**
 156          * Helper to call a command with a map of parameters easily
 157          *
 158          * @param paramMap
 159          *            a map that links various commands ids with corresponding
 160          *            String values.
 161          */
 162         public static void callCommand(String commandID,
 163                         Map<String, String> paramMap) {
 164                 try {
 165                         IWorkbench iw = ArgeoUiPlugin.getDefault().getWorkbench();
 166                         IHandlerService handlerService = (IHandlerService) iw
 167                                         .getService(IHandlerService.class);
 168                         ICommandService cmdService = (ICommandService) iw
 169                                         .getActiveWorkbenchWindow().getService(
 170                                                         ICommandService.class);
 171                         Command cmd = cmdService.getCommand(commandID);
 172
 173                         ArrayList<Parameterization> parameters = null;
 174                         ParameterizedCommand pc;
 175
 176                         if (paramMap != null) {
 177                                 // Set parameters of the command to launch :
 178                                 parameters = new ArrayList<Parameterization>();
 179                                 Parameterization parameterization;
 180
 181                                 for (String id : paramMap.keySet()) {
 182                                         parameterization = new Parameterization(
 183                                                         cmd.getParameter(id), paramMap.get(id));
 184                                         parameters.add(parameterization);
 185                                 }
 186                                 pc = new ParameterizedCommand(cmd,
 187                                                 parameters.toArray(new Parameterization[parameters
 188                                                                 .size()]));
 189                         } else
 190                                 pc = new ParameterizedCommand(cmd, null);
 191
 192                         // execute the command
 193                         handlerService.executeCommand(pc, null);
 194                 } catch (Exception e) {
 195                         throw new ArgeoException("Unexpected error while"
 196                                         + " calling the command " + commandID, e);
 197                 }
 198         }
 199 }