bundles/org.simantics.g2d/src/org/simantics/g2d/tooltip/EditableTextTooltipProvider2.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.g2d.tooltip;\r
  13 \r
  14 \r
  15 import org.eclipse.swt.SWT;\r
  16 import org.eclipse.swt.events.KeyAdapter;\r
  17 import org.eclipse.swt.events.KeyEvent;\r
  18 import org.eclipse.swt.layout.FillLayout;\r
  19 import org.eclipse.swt.widgets.Composite;\r
  20 import org.eclipse.swt.widgets.Display;\r
  21 import org.eclipse.swt.widgets.Label;\r
  22 import org.eclipse.swt.widgets.Shell;\r
  23 import org.eclipse.swt.widgets.Text;\r
  24 import org.simantics.g2d.element.IElement;\r
  25 \r
  26 public abstract class EditableTextTooltipProvider2 implements FocusableTooltipProvider {\r
  27         \r
  28         private Shell shell;\r
  29         private Text text;\r
  30         \r
  31         @Override\r
  32         public void showTooltip(final IElement element, final int x, final int y) {\r
  33                 Display.getDefault().asyncExec(new Runnable() {\r
  34                         @Override\r
  35                         public void run() {\r
  36                                 if (shell != null) {\r
  37                                         shell.dispose();\r
  38                                         shell = null;\r
  39                                 }\r
  40                                 shell = new Shell(Display.getCurrent().getActiveShell(),SWT.NO_TRIM);\r
  41                                 shell.setLayout(new FillLayout());\r
  42                                 Composite composite = new Composite(shell, SWT.BORDER);\r
  43                                 composite.setLayout(new FillLayout(SWT.VERTICAL));\r
  44                                 Label label = new Label(composite,SWT.NONE);\r
  45                                 label.setText("Press 'F9' to focus");\r
  46                                 text = new Text(composite, SWT.SINGLE);\r
  47                                 text.setText(getTooltipText(element));\r
  48                                 text.addKeyListener(new KeyAdapter() {\r
  49                                         @Override\r
  50                                         public void keyReleased(KeyEvent e) {\r
  51                                                 if (e.keyCode == SWT.CR) {\r
  52                                                         setText(element, text.getText());\r
  53                                                         shell.dispose();\r
  54                                                         shell = null;\r
  55                                                 }\r
  56                                         }\r
  57                                 });\r
  58                                 shell.pack();\r
  59                                 shell.setVisible(true);\r
  60                                 shell.setLocation(x, y-32);\r
  61                                 \r
  62                         }\r
  63                 });\r
  64                 \r
  65         }\r
  66         \r
  67         @Override\r
  68         public void hideTooltip(IElement element) {\r
  69                 if (shell == null)\r
  70                         return;\r
  71                 Display.getDefault().asyncExec(new Runnable() {\r
  72                         @Override\r
  73                         public void run() {\r
  74                                 shell.dispose();\r
  75                                 shell = null;\r
  76 \r
  77                         }\r
  78                 });\r
  79         }\r
  80         \r
  81         public void focus() {\r
  82                 Display.getDefault().asyncExec(new Runnable() {\r
  83                         @Override\r
  84                         public void run() {\r
  85                                 if (!shell.isDisposed())\r
  86                                         shell.forceFocus();\r
  87                         }\r
  88                 });\r
  89         }\r
  90         boolean has_focus = false;\r
  91         \r
  92         @Override\r
  93         public boolean hasFocus() {\r
  94                 \r
  95                 Display.getDefault().syncExec(new Runnable() {\r
  96                         \r
  97                         @Override\r
  98                         public void run() {\r
  99                                 if(shell != null && !shell.isDisposed())\r
 100                                         has_focus = shell.isFocusControl() || text.isFocusControl();\r
 101                                 \r
 102                                 else\r
 103                                         has_focus = false;\r
 104                                 \r
 105                         }\r
 106                 });\r
 107                 return has_focus;\r
 108         }\r
 109         \r
 110         public abstract String getTooltipText(IElement element);\r
 111         \r
 112         public abstract void setText(IElement element, String text);\r
 113 \r
 114 }\r