bundles/org.simantics.ui/src/org/simantics/ui/dialogs/ActionChooserDialog.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\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  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.ui.dialogs;\r
  13 \r
  14 import org.eclipse.jface.action.IAction;\r
  15 import org.eclipse.jface.dialogs.Dialog;\r
  16 import org.eclipse.jface.dialogs.IDialogConstants;\r
  17 import org.eclipse.jface.dialogs.IDialogSettings;\r
  18 import org.eclipse.jface.resource.ImageDescriptor;\r
  19 import org.eclipse.jface.resource.JFaceResources;\r
  20 import org.eclipse.jface.resource.LocalResourceManager;\r
  21 import org.eclipse.jface.resource.ResourceManager;\r
  22 import org.eclipse.jface.viewers.ArrayContentProvider;\r
  23 import org.eclipse.jface.viewers.DoubleClickEvent;\r
  24 import org.eclipse.jface.viewers.IDoubleClickListener;\r
  25 import org.eclipse.jface.viewers.ISelection;\r
  26 import org.eclipse.jface.viewers.ISelectionChangedListener;\r
  27 import org.eclipse.jface.viewers.IStructuredSelection;\r
  28 import org.eclipse.jface.viewers.LabelProvider;\r
  29 import org.eclipse.jface.viewers.SelectionChangedEvent;\r
  30 import org.eclipse.jface.viewers.StructuredSelection;\r
  31 import org.eclipse.jface.viewers.TableViewer;\r
  32 import org.eclipse.jface.viewers.Viewer;\r
  33 import org.eclipse.jface.viewers.ViewerSorter;\r
  34 import org.eclipse.swt.SWT;\r
  35 import org.eclipse.swt.graphics.Image;\r
  36 import org.eclipse.swt.graphics.Point;\r
  37 import org.eclipse.swt.layout.GridData;\r
  38 import org.eclipse.swt.widgets.Button;\r
  39 import org.eclipse.swt.widgets.Composite;\r
  40 import org.eclipse.swt.widgets.Control;\r
  41 import org.eclipse.swt.widgets.Event;\r
  42 import org.eclipse.swt.widgets.Label;\r
  43 import org.eclipse.swt.widgets.Listener;\r
  44 import org.eclipse.swt.widgets.Shell;\r
  45 import org.simantics.ui.internal.Activator;\r
  46 import org.simantics.utils.strings.AlphanumComparator;\r
  47 import org.simantics.utils.ui.action.IPriorityAction;\r
  48 \r
  49 \r
  50 /**\r
  51  * @author Tuukka Lehtonen\r
  52  */\r
  53 public class ActionChooserDialog extends Dialog {\r
  54 \r
  55     private static final String DIALOG = "ActionChooserDialog"; //$NON-NLS-1$\r
  56 \r
  57     private final IAction[]     actions;\r
  58 \r
  59     private final String        title;\r
  60 \r
  61     private final String        description;\r
  62 \r
  63     private IAction             chosenAction;\r
  64 \r
  65     private TableViewer         viewer;\r
  66 \r
  67     private IDialogSettings     dialogBoundsSettings;\r
  68 \r
  69     private ResourceManager     resourceManager;\r
  70 \r
  71     public ActionChooserDialog(Shell parent, IPriorityAction[] actions, String title, String description) {\r
  72         super(parent);\r
  73         this.actions = actions;\r
  74         this.title = title;\r
  75         this.description = description;\r
  76 \r
  77         IDialogSettings settings = Activator.getDefault().getDialogSettings();\r
  78         dialogBoundsSettings = settings.getSection(DIALOG);\r
  79         if (dialogBoundsSettings == null)\r
  80             dialogBoundsSettings = settings.addNewSection(DIALOG);\r
  81     }\r
  82 \r
  83     @Override\r
  84     protected IDialogSettings getDialogBoundsSettings() {\r
  85         return dialogBoundsSettings;\r
  86     }\r
  87 \r
  88     @Override\r
  89     protected void configureShell(Shell newShell) {\r
  90         if (title != null) {\r
  91             newShell.setText(title);\r
  92         } else {\r
  93             newShell.setText("Choose Action");\r
  94         }\r
  95         super.configureShell(newShell);\r
  96     }\r
  97 \r
  98     @Override\r
  99     protected int getShellStyle() {\r
 100         return super.getShellStyle() | SWT.RESIZE;\r
 101     }\r
 102 \r
 103     @Override\r
 104     protected Point getInitialSize() {\r
 105         Point defaultSize = getShell().computeSize(SWT.DEFAULT, SWT.DEFAULT, true);\r
 106         Point result = super.getInitialSize();\r
 107         if (defaultSize.equals(result))\r
 108             return new Point(300, 300);\r
 109         return result;\r
 110     }\r
 111 \r
 112     @Override\r
 113     protected Control createDialogArea(Composite parent) {\r
 114         Composite composite = (Composite) super.createDialogArea(parent);\r
 115 \r
 116         this.resourceManager = new LocalResourceManager(JFaceResources.getResources());\r
 117         composite.addListener(SWT.Dispose, new Listener() {\r
 118             @Override\r
 119             public void handleEvent(Event event) {\r
 120                 resourceManager.dispose();\r
 121                 resourceManager = null;\r
 122             }\r
 123         });\r
 124 \r
 125         if (description != null) {\r
 126             Label label = new Label(composite, 0);\r
 127             label.setText(description);\r
 128             label.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));\r
 129         }\r
 130 \r
 131         viewer = new TableViewer(composite, SWT.V_SCROLL | SWT.H_SCROLL | SWT.BORDER | SWT.SINGLE);\r
 132         viewer.getControl().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));\r
 133         viewer.setContentProvider(new ArrayContentProvider());\r
 134         viewer.setLabelProvider(new ActionLabelProvider());\r
 135         viewer.setSorter(sorter);\r
 136         viewer.setInput(actions);\r
 137 \r
 138         viewer.addDoubleClickListener(new IDoubleClickListener() {\r
 139             @Override\r
 140             public void doubleClick(DoubleClickEvent event) {\r
 141                 okPressed();\r
 142             }\r
 143         });\r
 144 \r
 145         viewer.addSelectionChangedListener(new ISelectionChangedListener() {\r
 146             @Override\r
 147             public void selectionChanged(SelectionChangedEvent event) {\r
 148                 ActionChooserDialog.this.selectionChanged(event.getSelection());\r
 149             }\r
 150         });\r
 151 \r
 152         if (actions.length > 0) {\r
 153             viewer.setSelection(new StructuredSelection(actions[0]), true);\r
 154         }\r
 155 \r
 156         applyDialogFont(composite);\r
 157         return composite;\r
 158     }\r
 159 \r
 160     private void selectionChanged(ISelection s) {\r
 161         Button ok = getButton(IDialogConstants.OK_ID);\r
 162         IStructuredSelection iss = (IStructuredSelection) s;\r
 163         if (iss == null || iss.isEmpty()) {\r
 164             if (ok != null)\r
 165                 ok.setEnabled(false);\r
 166             return;\r
 167         }\r
 168 \r
 169         if (ok != null)\r
 170             ok.setEnabled(true);\r
 171         return;\r
 172     }\r
 173 \r
 174     @Override\r
 175     protected void okPressed() {\r
 176         chosenAction = (IAction) ((IStructuredSelection) viewer.getSelection()).getFirstElement();\r
 177         super.okPressed();\r
 178     }\r
 179 \r
 180     public IAction getChosenAction() {\r
 181         return chosenAction;\r
 182     }\r
 183 \r
 184     private final ViewerSorter sorter = new ViewerSorter() {\r
 185         @Override\r
 186         public int category(Object element) {\r
 187             // Sort actions in descending priority order\r
 188             if (element instanceof IPriorityAction) {\r
 189                 IPriorityAction action = (IPriorityAction) element;\r
 190                 return -action.getPriority();\r
 191             }\r
 192             return Integer.MAX_VALUE;\r
 193         }\r
 194         @Override\r
 195         public int compare(Viewer viewer, Object e1, Object e2) {\r
 196             IPriorityAction a1 = (IPriorityAction) e1;\r
 197             IPriorityAction a2 = (IPriorityAction) e2;\r
 198             return AlphanumComparator.CASE_INSENSITIVE_COMPARATOR.compare(a1.getText(), a2.getText());\r
 199         }\r
 200     };\r
 201 \r
 202     class ActionLabelProvider extends LabelProvider {\r
 203         @Override\r
 204         public Image getImage(Object element) {\r
 205             IAction a = (IAction) element;\r
 206             ImageDescriptor desc = a.getImageDescriptor();\r
 207             if(desc == null) return null;\r
 208             else return resourceManager.createImage(desc);\r
 209         }\r
 210 \r
 211         @Override\r
 212         public String getText(Object element) {\r
 213             IPriorityAction a = (IPriorityAction) element;\r
 214             return a.getText() + " (" + a.getPriority() + ")";\r
 215 //            return a.getText();\r
 216         }\r
 217     }\r
 218 \r
 219 }\r