org.argeo.cms/src/org/argeo/cms/CmsUtils.java

   1 package org.argeo.cms;
   2
   3 import java.io.InputStream;
   4
   5 import javax.jcr.Item;
   6 import javax.jcr.Node;
   7 import javax.jcr.Property;
   8 import javax.jcr.RepositoryException;
   9
  10 import org.apache.commons.io.IOUtils;
  11 import org.argeo.jcr.JcrUtils;
  12 import org.eclipse.rap.rwt.RWT;
  13 import org.eclipse.rap.rwt.service.ResourceManager;
  14 import org.eclipse.swt.SWT;
  15 import org.eclipse.swt.graphics.Image;
  16 import org.eclipse.swt.graphics.ImageData;
  17 import org.eclipse.swt.graphics.Point;
  18 import org.eclipse.swt.layout.GridData;
  19 import org.eclipse.swt.layout.GridLayout;
  20 import org.eclipse.swt.layout.RowData;
  21 import org.eclipse.swt.widgets.Composite;
  22 import org.eclipse.swt.widgets.Control;
  23 import org.eclipse.swt.widgets.Display;
  24 import org.eclipse.swt.widgets.Widget;
  25
  26 /** Static utilities for the CMS framework. */
  27 public class CmsUtils implements CmsConstants {
  28         /** @deprecated Use rowData16px() instead. GridData should not be reused. */
  29         @Deprecated
  30         public static RowData ROW_DATA_16px = new RowData(16, 16);
  31
  32         public static GridLayout noSpaceGridLayout() {
  33                 return noSpaceGridLayout(new GridLayout());
  34         }
  35
  36         public static GridLayout noSpaceGridLayout(GridLayout layout) {
  37                 layout.horizontalSpacing = 0;
  38                 layout.verticalSpacing = 0;
  39                 layout.marginWidth = 0;
  40                 layout.marginHeight = 0;
  41                 return layout;
  42         }
  43
  44         //
  45         // GRID DATA
  46         //
  47         public static GridData fillWidth() {
  48                 return grabWidth(SWT.FILL, SWT.FILL);
  49         }
  50
  51         public static GridData fillAll() {
  52                 return new GridData(SWT.FILL, SWT.FILL, true, true);
  53         }
  54
  55         public static GridData grabWidth(int horizontalAlignment,
  56                         int verticalAlignment) {
  57                 return new GridData(horizontalAlignment, horizontalAlignment, true,
  58                                 false);
  59         }
  60
  61         public static RowData rowData16px() {
  62                 return new RowData(16, 16);
  63         }
  64
  65         public static void style(Widget widget, String style) {
  66                 widget.setData(CmsConstants.STYLE, style);
  67         }
  68
  69         public static void markup(Widget widget) {
  70                 widget.setData(CmsConstants.MARKUP, true);
  71         }
  72
  73         /** @return the path or null if not instrumented */
  74         public static String getDataPath(Widget widget) {
  75                 // JCR item
  76                 Object data = widget.getData();
  77                 if (data != null && data instanceof Item) {
  78                         try {
  79                                 return ((Item) data).getPath();
  80                         } catch (RepositoryException e) {
  81                                 throw new CmsException("Cannot find data path of " + data
  82                                                 + " for " + widget);
  83                         }
  84                 }
  85
  86                 // JCR path
  87                 data = widget.getData(Property.JCR_PATH);
  88                 if (data != null)
  89                         return data.toString();
  90
  91                 return null;
  92         }
  93
  94         /** Dispose all children of a Composite */
  95         public static void clear(Composite composite) {
  96                 for (Control child : composite.getChildren())
  97                         child.dispose();
  98         }
  99
 100         //
 101         // JCR
 102         //
 103         public static Node getOrAddEmptyFile(Node parent, Enum<?> child)
 104                         throws RepositoryException {
 105                 if (has(parent, child))
 106                         return child(parent, child);
 107                 return JcrUtils.copyBytesAsFile(parent, child.name(), new byte[0]);
 108         }
 109
 110         public static Node child(Node parent, Enum<?> en)
 111                         throws RepositoryException {
 112                 return parent.getNode(en.name());
 113         }
 114
 115         public static Boolean has(Node parent, Enum<?> en)
 116                         throws RepositoryException {
 117                 return parent.hasNode(en.name());
 118         }
 119
 120         public static Node getOrAdd(Node parent, Enum<?> en)
 121                         throws RepositoryException {
 122                 return getOrAdd(parent, en, null);
 123         }
 124
 125         public static Node getOrAdd(Node parent, Enum<?> en, String primaryType)
 126                         throws RepositoryException {
 127                 if (has(parent, en))
 128                         return child(parent, en);
 129                 else if (primaryType == null)
 130                         return parent.addNode(en.name());
 131                 else
 132                         return parent.addNode(en.name(), primaryType);
 133         }
 134
 135         // IMAGES
 136         public static String img(String src, String width, String height) {
 137                 return imgBuilder(src, width, height).append("/>").toString();
 138         }
 139
 140         public static String img(String src, Point size) {
 141                 return img(src, Integer.toString(size.x), Integer.toString(size.y));
 142         }
 143
 144         public static StringBuilder imgBuilder(String src, String width,
 145                         String height) {
 146                 return new StringBuilder(64).append("<img width='").append(width)
 147                                 .append("' height='").append(height).append("' src='")
 148                                 .append(src).append("'");
 149         }
 150
 151         public static String noImg(Point size) {
 152                 ResourceManager rm = RWT.getResourceManager();
 153                 return CmsUtils.img(rm.getLocation(NO_IMAGE), size);
 154         }
 155
 156         public static String noImg() {
 157                 return noImg(NO_IMAGE_SIZE);
 158         }
 159
 160         public static Image noImage(Point size) {
 161                 ResourceManager rm = RWT.getResourceManager();
 162                 InputStream in = null;
 163                 try {
 164                         in = rm.getRegisteredContent(NO_IMAGE);
 165                         ImageData id = new ImageData(in);
 166                         ImageData scaled = id.scaledTo(size.x, size.y);
 167                         Image image = new Image(Display.getCurrent(), scaled);
 168                         return image;
 169                 } finally {
 170                         IOUtils.closeQuietly(in);
 171                 }
 172         }
 173
 174         private CmsUtils() {
 175         }
 176 }