gerrit.simantics Code Review - simantics/sysdyn.git/blob

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2014 Association for Decentralized Information Management in\r
   3  * 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.jfreechart.chart.properties;\r
  13 \r
  14 import org.eclipse.swt.events.ControlEvent;\r
  15 import org.eclipse.swt.events.ControlListener;\r
  16 import org.eclipse.swt.graphics.Point;\r
  17 import org.eclipse.swt.widgets.Composite;\r
  18 import org.eclipse.ui.IWorkbenchSite;\r
  19 import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupport;\r
  20 import org.simantics.db.management.ISessionContext;\r
  21 import org.simantics.selectionview.StandardProperties;\r
  22 \r
  23 /**\r
  24  * Tab adjusting the layout depending on its dimensions.\r
  25  * @author Tuomas Miettinen\r
  26  *\r
  27  */\r
  28 public abstract class AdjustableTab extends LabelPropertyTabContributor {\r
  29 \r
  30         private Composite spp;\r
  31         private ControlListener controlListener;\r
  32         private static final int WIDE_SCREEN_WIDTH = 1100;\r
  33         \r
  34         @Override\r
  35         public void createControls(Composite body, IWorkbenchSite site, ISessionContext context, WidgetSupport _support) {\r
  36                 // Get size of the available area.\r
  37                 spp = body;\r
  38                 do {\r
  39                         spp = spp.getParent();\r
  40                 } while (!(spp instanceof StandardProperties));\r
  41                 \r
  42                 // Add listener to change the layout when the composite resizes.\r
  43                 spp.addControlListener(controlListener = new ControlListener(){\r
  44 \r
  45                         @Override\r
  46                         public void controlMoved(ControlEvent e) {}\r
  47 \r
  48                         @Override\r
  49                         public void controlResized(ControlEvent e) {\r
  50                                 createLayout();                         \r
  51                         }\r
  52                 });\r
  53                 \r
  54                 // Create the controls and their initial layout.\r
  55                 createAndAddControls(body, site, context, _support);\r
  56                 createLayout(); \r
  57         }\r
  58 \r
  59         /**\r
  60          * Create controls and add them to the tab.\r
  61          * @param body the composite where the controls are added.\r
  62          * @param site\r
  63          * @param context\r
  64          * @param _support\r
  65          */\r
  66         protected abstract void createAndAddControls(Composite body, IWorkbenchSite site,\r
  67                         ISessionContext context, WidgetSupport _support);\r
  68 \r
  69         /**\r
  70          *  Create layout for controls.\r
  71          */\r
  72         protected void createLayout() {\r
  73                 Point size = spp.getSize();\r
  74                 if (size.x > size.y) {\r
  75                         createControlLayoutHorizontal((size.x > WIDE_SCREEN_WIDTH));\r
  76                 } else {\r
  77                         createControlLayoutVertical();\r
  78                 }\r
  79         }\r
  80         \r
  81         /**\r
  82          * Determine if the layout uses vertical layout\r
  83          * @return true iff the layout uses vertical layout\r
  84          */\r
  85         protected boolean isVertical() {\r
  86                 Point size = spp.getSize();\r
  87                 return size.x < size.y;\r
  88         }\r
  89         \r
  90         /**\r
  91          * Create vertical layout for controls.\r
  92          */\r
  93         protected abstract void createControlLayoutVertical();\r
  94 \r
  95         /**\r
  96          * Create horizontal layout for controls.\r
  97          * @param wideScreen true iff the control is wider than WIDE_SCREEN_WIDTH\r
  98          */\r
  99         protected abstract void createControlLayoutHorizontal(boolean wideScreen);\r
 100 \r
 101         @Override\r
 102         public void dispose() {\r
 103                 if(controlListener != null && spp != null)\r
 104                         spp.removeControlListener(controlListener);\r
 105         }\r
 106 \r
 107 }\r