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         /** Style widget */
  69         public static void style(Widget widget, String style) {
  70                 widget.setData(CmsConstants.STYLE, style);
  71         }
  72
  73         /** Enable markups on widget */
  74         public static void markup(Widget widget) {
  75                 widget.setData(CmsConstants.MARKUP, true);
  76         }
  77
  78         public static void setItemHeight(Table table, int height) {
  79                 table.setData(CmsConstants.ITEM_HEIGHT, height);
  80         }
  81
  82         /** @return the path or null if not instrumented */
  83         public static String getDataPath(Widget widget) {
  84                 // JCR item
  85                 Object data = widget.getData();
  86                 if (data != null && data instanceof Item) {
  87                         try {
  88                                 return ((Item) data).getPath();
  89                         } catch (RepositoryException e) {
  90                                 throw new CmsException("Cannot find data path of " + data
  91                                                 + " for " + widget);
  92                         }
  93                 }
  94
  95                 // JCR path
  96                 data = widget.getData(Property.JCR_PATH);
  97                 if (data != null)
  98                         return data.toString();
  99
 100                 return null;
 101         }
 102
 103         /** Dispose all children of a Composite */
 104         public static void clear(Composite composite) {
 105                 for (Control child : composite.getChildren())
 106                         child.dispose();
 107         }
 108
 109         //
 110         // JCR
 111         //
 112         public static Node getOrAddEmptyFile(Node parent, Enum<?> child)
 113                         throws RepositoryException {
 114                 if (has(parent, child))
 115                         return child(parent, child);
 116                 return JcrUtils.copyBytesAsFile(parent, child.name(), new byte[0]);
 117         }
 118
 119         public static Node child(Node parent, Enum<?> en)
 120                         throws RepositoryException {
 121                 return parent.getNode(en.name());
 122         }
 123
 124         public static Boolean has(Node parent, Enum<?> en)
 125                         throws RepositoryException {
 126                 return parent.hasNode(en.name());
 127         }
 128
 129         public static Node getOrAdd(Node parent, Enum<?> en)
 130                         throws RepositoryException {
 131                 return getOrAdd(parent, en, null);
 132         }
 133
 134         public static Node getOrAdd(Node parent, Enum<?> en, String primaryType)
 135                         throws RepositoryException {
 136                 if (has(parent, en))
 137                         return child(parent, en);
 138                 else if (primaryType == null)
 139                         return parent.addNode(en.name());
 140                 else
 141                         return parent.addNode(en.name(), primaryType);
 142         }
 143
 144         // IMAGES
 145         public static String img(String src, String width, String height) {
 146                 return imgBuilder(src, width, height).append("/>").toString();
 147         }
 148
 149         public static String img(String src, Point size) {
 150                 return img(src, Integer.toString(size.x), Integer.toString(size.y));
 151         }
 152
 153         public static StringBuilder imgBuilder(String src, String width,
 154                         String height) {
 155                 return new StringBuilder(64).append("<img width='").append(width)
 156                                 .append("' height='").append(height).append("' src='")
 157                                 .append(src).append("'");
 158         }
 159
 160         public static String noImg(Point size) {
 161                 ResourceManager rm = RWT.getResourceManager();
 162                 return CmsUtils.img(rm.getLocation(NO_IMAGE), size);
 163         }
 164
 165         public static String noImg() {
 166                 return noImg(NO_IMAGE_SIZE);
 167         }
 168
 169         public static Image noImage(Point size) {
 170                 ResourceManager rm = RWT.getResourceManager();
 171                 InputStream in = null;
 172                 try {
 173                         in = rm.getRegisteredContent(NO_IMAGE);
 174                         ImageData id = new ImageData(in);
 175                         ImageData scaled = id.scaledTo(size.x, size.y);
 176                         Image image = new Image(Display.getCurrent(), scaled);
 177                         return image;
 178                 } finally {
 179                         IOUtils.closeQuietly(in);
 180                 }
 181         }
 182
 183         private CmsUtils() {
 184         }
 185 }