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.Table;
  27 import org.eclipse.swt.widgets.Widget;
  28
  29 /** Static utilities for the CMS framework. */
  30 public class CmsUtils implements CmsConstants {
  31         /** @deprecated Use rowData16px() instead. GridData should not be reused. */
  32         @Deprecated
  33         public static RowData ROW_DATA_16px = new RowData(16, 16);
  34
  35         public static GridLayout noSpaceGridLayout() {
  36                 return noSpaceGridLayout(new GridLayout());
  37         }
  38
  39         public static GridLayout noSpaceGridLayout(GridLayout layout) {
  40                 layout.horizontalSpacing = 0;
  41                 layout.verticalSpacing = 0;
  42                 layout.marginWidth = 0;
  43                 layout.marginHeight = 0;
  44                 return layout;
  45         }
  46
  47         //
  48         // GRID DATA
  49         //
  50         public static GridData fillWidth() {
  51                 return grabWidth(SWT.FILL, SWT.FILL);
  52         }
  53
  54         public static GridData fillAll() {
  55                 return new GridData(SWT.FILL, SWT.FILL, true, true);
  56         }
  57
  58         public static GridData grabWidth(int horizontalAlignment,
  59                         int verticalAlignment) {
  60                 return new GridData(horizontalAlignment, horizontalAlignment, true,
  61                                 false);
  62         }
  63
  64         public static RowData rowData16px() {
  65                 return new RowData(16, 16);
  66         }
  67
  68         public static void style(Widget widget, String style) {
  69                 widget.setData(CmsConstants.STYLE, style);
  70         }
  71
  72         public static void markup(Widget widget) {
  73                 widget.setData(CmsConstants.MARKUP, true);
  74         }
  75
  76         public static void setItemHeight(Table table, int height) {
  77                 table.setData(CmsConstants.ITEM_HEIGHT, height);
  78         }
  79
  80         /** @return the path or null if not instrumented */
  81         public static String getDataPath(Widget widget) {
  82                 // JCR item
  83                 Object data = widget.getData();
  84                 if (data != null && data instanceof Item) {
  85                         try {
  86                                 return ((Item) data).getPath();
  87                         } catch (RepositoryException e) {
  88                                 throw new CmsException("Cannot find data path of " + data
  89                                                 + " for " + widget);
  90                         }
  91                 }
  92
  93                 // JCR path
  94                 data = widget.getData(Property.JCR_PATH);
  95                 if (data != null)
  96                         return data.toString();
  97
  98                 return null;
  99         }
 100
 101         /** Dispose all children of a Composite */
 102         public static void clear(Composite composite) {
 103                 for (Control child : composite.getChildren())
 104                         child.dispose();
 105         }
 106
 107         //
 108         // JCR
 109         //
 110         public static Node getOrAddEmptyFile(Node parent, Enum<?> child)
 111                         throws RepositoryException {
 112                 if (has(parent, child))
 113                         return child(parent, child);
 114                 return JcrUtils.copyBytesAsFile(parent, child.name(), new byte[0]);
 115         }
 116
 117         public static Node child(Node parent, Enum<?> en)
 118                         throws RepositoryException {
 119                 return parent.getNode(en.name());
 120         }
 121
 122         public static Boolean has(Node parent, Enum<?> en)
 123                         throws RepositoryException {
 124                 return parent.hasNode(en.name());
 125         }
 126
 127         public static Node getOrAdd(Node parent, Enum<?> en)
 128                         throws RepositoryException {
 129                 return getOrAdd(parent, en, null);
 130         }
 131
 132         public static Node getOrAdd(Node parent, Enum<?> en, String primaryType)
 133                         throws RepositoryException {
 134                 if (has(parent, en))
 135                         return child(parent, en);
 136                 else if (primaryType == null)
 137                         return parent.addNode(en.name());
 138                 else
 139                         return parent.addNode(en.name(), primaryType);
 140         }
 141
 142         // IMAGES
 143         public static String img(String src, String width, String height) {
 144                 return imgBuilder(src, width, height).append("/>").toString();
 145         }
 146
 147         public static String img(String src, Point size) {
 148                 return img(src, Integer.toString(size.x), Integer.toString(size.y));
 149         }
 150
 151         public static StringBuilder imgBuilder(String src, String width,
 152                         String height) {
 153                 return new StringBuilder(64).append("<img width='").append(width)
 154                                 .append("' height='").append(height).append("' src='")
 155                                 .append(src).append("'");
 156         }
 157
 158         public static String noImg(Point size) {
 159                 ResourceManager rm = RWT.getResourceManager();
 160                 return CmsUtils.img(rm.getLocation(NO_IMAGE), size);
 161         }
 162
 163         public static String noImg() {
 164                 return noImg(NO_IMAGE_SIZE);
 165         }
 166
 167         public static Image noImage(Point size) {
 168                 ResourceManager rm = RWT.getResourceManager();
 169                 InputStream in = null;
 170                 try {
 171                         in = rm.getRegisteredContent(NO_IMAGE);
 172                         ImageData id = new ImageData(in);
 173                         ImageData scaled = id.scaledTo(size.x, size.y);
 174                         Image image = new Image(Display.getCurrent(), scaled);
 175                         return image;
 176                 } finally {
 177                         IOUtils.closeQuietly(in);
 178                 }
 179         }
 180
 181         private CmsUtils() {
 182         }
 183 }