bundles/org.simantics.g2d/src/org/simantics/g2d/tooltip/EditableTextTooltipProvider2.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.g2d.tooltip;
  13
  14
  15 import org.eclipse.swt.SWT;
  16 import org.eclipse.swt.events.KeyAdapter;
  17 import org.eclipse.swt.events.KeyEvent;
  18 import org.eclipse.swt.layout.FillLayout;
  19 import org.eclipse.swt.widgets.Composite;
  20 import org.eclipse.swt.widgets.Display;
  21 import org.eclipse.swt.widgets.Label;
  22 import org.eclipse.swt.widgets.Shell;
  23 import org.eclipse.swt.widgets.Text;
  24 import org.simantics.g2d.element.IElement;
  25
  26 public abstract class EditableTextTooltipProvider2 implements FocusableTooltipProvider {
  27
  28         private Shell shell;
  29         private Text text;
  30
  31         @Override
  32         public void showTooltip(final IElement element, final int x, final int y) {
  33                 Display.getDefault().asyncExec(new Runnable() {
  34                         @Override
  35                         public void run() {
  36                                 if (shell != null) {
  37                                         shell.dispose();
  38                                         shell = null;
  39                                 }
  40                                 shell = new Shell(Display.getCurrent().getActiveShell(),SWT.NO_TRIM);
  41                                 shell.setLayout(new FillLayout());
  42                                 Composite composite = new Composite(shell, SWT.BORDER);
  43                                 composite.setLayout(new FillLayout(SWT.VERTICAL));
  44                                 Label label = new Label(composite,SWT.NONE);
  45                                 label.setText("Press 'F9' to focus");
  46                                 text = new Text(composite, SWT.SINGLE);
  47                                 text.setText(getTooltipText(element));
  48                                 text.addKeyListener(new KeyAdapter() {
  49                                         @Override
  50                                         public void keyReleased(KeyEvent e) {
  51                                                 if (e.keyCode == SWT.CR) {
  52                                                         setText(element, text.getText());
  53                                                         shell.dispose();
  54                                                         shell = null;
  55                                                 }
  56                                         }
  57                                 });
  58                                 shell.pack();
  59                                 shell.setVisible(true);
  60                                 shell.setLocation(x, y-32);
  61
  62                         }
  63                 });
  64
  65         }
  66
  67         @Override
  68         public void hideTooltip(IElement element) {
  69                 if (shell == null)
  70                         return;
  71                 Display.getDefault().asyncExec(new Runnable() {
  72                         @Override
  73                         public void run() {
  74                                 shell.dispose();
  75                                 shell = null;
  76
  77                         }
  78                 });
  79         }
  80
  81         public void focus() {
  82                 Display.getDefault().asyncExec(new Runnable() {
  83                         @Override
  84                         public void run() {
  85                                 if (!shell.isDisposed())
  86                                         shell.forceFocus();
  87                         }
  88                 });
  89         }
  90         boolean has_focus = false;
  91
  92         @Override
  93         public boolean hasFocus() {
  94
  95                 Display.getDefault().syncExec(new Runnable() {
  96
  97                         @Override
  98                         public void run() {
  99                                 if(shell != null && !shell.isDisposed())
 100                                         has_focus = shell.isFocusControl() || text.isFocusControl();
 101
 102                                 else
 103                                         has_focus = false;
 104
 105                         }
 106                 });
 107                 return has_focus;
 108         }
 109
 110         public abstract String getTooltipText(IElement element);
 111
 112         public abstract void setText(IElement element, String text);
 113
 114 }