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

   1 package org.argeo.cms.util;
   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.cms.CmsConstants;
  12 import org.argeo.cms.CmsException;
  13 import org.argeo.jcr.JcrUtils;
  14 import org.eclipse.rap.rwt.RWT;
  15 import org.eclipse.rap.rwt.service.ResourceManager;
  16 import org.eclipse.swt.SWT;
  17 import org.eclipse.swt.graphics.Image;
  18 import org.eclipse.swt.graphics.ImageData;
  19 import org.eclipse.swt.graphics.Point;
  20 import org.eclipse.swt.layout.GridData;
  21 import org.eclipse.swt.layout.GridLayout;
  22 import org.eclipse.swt.layout.RowData;
  23 import org.eclipse.swt.widgets.Composite;
  24 import org.eclipse.swt.widgets.Control;
  25 import org.eclipse.swt.widgets.Display;
  26 import org.eclipse.swt.widgets.Widget;
  27
  28 /** Static utilities for the CMS framework. */
  29 public class CmsUtils implements CmsConstants {
  30         /** @deprecated Use rowData16px() instead. GridData should not be reused. */
  31         @Deprecated
  32         public static RowData ROW_DATA_16px = new RowData(16, 16);
  33
  34         public static GridLayout noSpaceGridLayout() {
  35                 return noSpaceGridLayout(new GridLayout());
  36         }
  37
  38         public static GridLayout noSpaceGridLayout(GridLayout layout) {
  39                 layout.horizontalSpacing = 0;
  40                 layout.verticalSpacing = 0;
  41                 layout.marginWidth = 0;
  42                 layout.marginHeight = 0;
  43                 return layout;
  44         }
  45
  46         //
  47         // GRID DATA
  48         //
  49         public static GridData fillWidth() {
  50                 return grabWidth(SWT.FILL, SWT.FILL);
  51         }
  52
  53         public static GridData fillAll() {
  54                 return new GridData(SWT.FILL, SWT.FILL, true, true);
  55         }
  56
  57         public static GridData grabWidth(int horizontalAlignment,
  58                         int verticalAlignment) {
  59                 return new GridData(horizontalAlignment, horizontalAlignment, true,
  60                                 false);
  61         }
  62
  63         public static RowData rowData16px() {
  64                 return new RowData(16, 16);
  65         }
  66
  67         public static void style(Widget widget, String style) {
  68                 widget.setData(CmsConstants.STYLE, style);
  69         }
  70
  71         public static void markup(Widget widget) {
  72                 widget.setData(CmsConstants.MARKUP, true);
  73         }
  74
  75         /** @return the path or null if not instrumented */
  76         public static String getDataPath(Widget widget) {
  77                 // JCR item
  78                 Object data = widget.getData();
  79                 if (data != null && data instanceof Item) {
  80                         try {
  81                                 return ((Item) data).getPath();
  82                         } catch (RepositoryException e) {
  83                                 throw new CmsException("Cannot find data path of " + data
  84                                                 + " for " + widget);
  85                         }
  86                 }
  87
  88                 // JCR path
  89                 data = widget.getData(Property.JCR_PATH);
  90                 if (data != null)
  91                         return data.toString();
  92
  93                 return null;
  94         }
  95
  96         /** Dispose all children of a Composite */
  97         public static void clear(Composite composite) {
  98                 for (Control child : composite.getChildren())
  99                         child.dispose();
 100         }
 101
 102         //
 103         // JCR
 104         //
 105         public static Node getOrAddEmptyFile(Node parent, Enum<?> child)
 106                         throws RepositoryException {
 107                 if (has(parent, child))
 108                         return child(parent, child);
 109                 return JcrUtils.copyBytesAsFile(parent, child.name(), new byte[0]);
 110         }
 111
 112         public static Node child(Node parent, Enum<?> en)
 113                         throws RepositoryException {
 114                 return parent.getNode(en.name());
 115         }
 116
 117         public static Boolean has(Node parent, Enum<?> en)
 118                         throws RepositoryException {
 119                 return parent.hasNode(en.name());
 120         }
 121
 122         public static Node getOrAdd(Node parent, Enum<?> en)
 123                         throws RepositoryException {
 124                 return getOrAdd(parent, en, null);
 125         }
 126
 127         public static Node getOrAdd(Node parent, Enum<?> en, String primaryType)
 128                         throws RepositoryException {
 129                 if (has(parent, en))
 130                         return child(parent, en);
 131                 else if (primaryType == null)
 132                         return parent.addNode(en.name());
 133                 else
 134                         return parent.addNode(en.name(), primaryType);
 135         }
 136
 137         // IMAGES
 138         public static String img(String src, String width, String height) {
 139                 return imgBuilder(src, width, height).append("/>").toString();
 140         }
 141
 142         public static String img(String src, Point size) {
 143                 return img(src, Integer.toString(size.x), Integer.toString(size.y));
 144         }
 145
 146         public static StringBuilder imgBuilder(String src, String width,
 147                         String height) {
 148                 return new StringBuilder(64).append("<img width='").append(width)
 149                                 .append("' height='").append(height).append("' src='")
 150                                 .append(src).append("'");
 151         }
 152
 153         public static String noImg(Point size) {
 154                 ResourceManager rm = RWT.getResourceManager();
 155                 return CmsUtils.img(rm.getLocation(NO_IMAGE), size);
 156         }
 157
 158         public static String noImg() {
 159                 return noImg(NO_IMAGE_SIZE);
 160         }
 161
 162         public static Image noImage(Point size) {
 163                 ResourceManager rm = RWT.getResourceManager();
 164                 InputStream in = null;
 165                 try {
 166                         in = rm.getRegisteredContent(NO_IMAGE);
 167                         ImageData id = new ImageData(in);
 168                         ImageData scaled = id.scaledTo(size.x, size.y);
 169                         Image image = new Image(Display.getCurrent(), scaled);
 170                         return image;
 171                 } finally {
 172                         IOUtils.closeQuietly(in);
 173                 }
 174         }
 175
 176         private CmsUtils() {
 177         }
 178 }