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.cms.CmsView;
  14 import org.argeo.eclipse.ui.specific.UiContext;
  15 import org.argeo.jcr.JcrUtils;
  16 import org.eclipse.rap.rwt.RWT;
  17 import org.eclipse.rap.rwt.service.ResourceManager;
  18 import org.eclipse.swt.SWT;
  19 import org.eclipse.swt.graphics.Image;
  20 import org.eclipse.swt.graphics.ImageData;
  21 import org.eclipse.swt.graphics.Point;
  22 import org.eclipse.swt.layout.GridData;
  23 import org.eclipse.swt.layout.GridLayout;
  24 import org.eclipse.swt.layout.RowData;
  25 import org.eclipse.swt.widgets.Composite;
  26 import org.eclipse.swt.widgets.Control;
  27 import org.eclipse.swt.widgets.Display;
  28 import org.eclipse.swt.widgets.Table;
  29 import org.eclipse.swt.widgets.Widget;
  30
  31 /** Static utilities for the CMS framework. */
  32 public class CmsUtils implements CmsConstants {
  33         /**
  34          * The CMS view related to this display, or null if none is available from
  35          * this call.
  36          */
  37         public static CmsView getCmsView() {
  38                 return UiContext.getData(CmsView.KEY);
  39         }
  40
  41         /** @deprecated Use rowData16px() instead. GridData should not be reused. */
  42         @Deprecated
  43         public static RowData ROW_DATA_16px = new RowData(16, 16);
  44
  45         public static GridLayout noSpaceGridLayout() {
  46                 return noSpaceGridLayout(new GridLayout());
  47         }
  48
  49         public static GridLayout noSpaceGridLayout(GridLayout layout) {
  50                 layout.horizontalSpacing = 0;
  51                 layout.verticalSpacing = 0;
  52                 layout.marginWidth = 0;
  53                 layout.marginHeight = 0;
  54                 return layout;
  55         }
  56
  57         //
  58         // GRID DATA
  59         //
  60         public static GridData fillWidth() {
  61                 return grabWidth(SWT.FILL, SWT.FILL);
  62         }
  63
  64         public static GridData fillAll() {
  65                 return new GridData(SWT.FILL, SWT.FILL, true, true);
  66         }
  67
  68         public static GridData grabWidth(int horizontalAlignment,
  69                         int verticalAlignment) {
  70                 return new GridData(horizontalAlignment, horizontalAlignment, true,
  71                                 false);
  72         }
  73
  74         public static RowData rowData16px() {
  75                 return new RowData(16, 16);
  76         }
  77
  78         /** Style widget */
  79         public static void style(Widget widget, String style) {
  80                 widget.setData(CmsConstants.STYLE, style);
  81         }
  82
  83         /** Enable markups on widget */
  84         public static void markup(Widget widget) {
  85                 widget.setData(CmsConstants.MARKUP, true);
  86         }
  87
  88         public static void setItemHeight(Table table, int height) {
  89                 table.setData(CmsConstants.ITEM_HEIGHT, height);
  90         }
  91
  92         /** @return the path or null if not instrumented */
  93         public static String getDataPath(Widget widget) {
  94                 // JCR item
  95                 Object data = widget.getData();
  96                 if (data != null && data instanceof Item) {
  97                         try {
  98                                 return ((Item) data).getPath();
  99                         } catch (RepositoryException e) {
 100                                 throw new CmsException("Cannot find data path of " + data
 101                                                 + " for " + widget);
 102                         }
 103                 }
 104
 105                 // JCR path
 106                 data = widget.getData(Property.JCR_PATH);
 107                 if (data != null)
 108                         return data.toString();
 109
 110                 return null;
 111         }
 112
 113         /** Dispose all children of a Composite */
 114         public static void clear(Composite composite) {
 115                 for (Control child : composite.getChildren())
 116                         child.dispose();
 117         }
 118
 119         //
 120         // JCR
 121         //
 122         public static Node getOrAddEmptyFile(Node parent, Enum<?> child)
 123                         throws RepositoryException {
 124                 if (has(parent, child))
 125                         return child(parent, child);
 126                 return JcrUtils.copyBytesAsFile(parent, child.name(), new byte[0]);
 127         }
 128
 129         public static Node child(Node parent, Enum<?> en)
 130                         throws RepositoryException {
 131                 return parent.getNode(en.name());
 132         }
 133
 134         public static Boolean has(Node parent, Enum<?> en)
 135                         throws RepositoryException {
 136                 return parent.hasNode(en.name());
 137         }
 138
 139         public static Node getOrAdd(Node parent, Enum<?> en)
 140                         throws RepositoryException {
 141                 return getOrAdd(parent, en, null);
 142         }
 143
 144         public static Node getOrAdd(Node parent, Enum<?> en, String primaryType)
 145                         throws RepositoryException {
 146                 if (has(parent, en))
 147                         return child(parent, en);
 148                 else if (primaryType == null)
 149                         return parent.addNode(en.name());
 150                 else
 151                         return parent.addNode(en.name(), primaryType);
 152         }
 153
 154         // IMAGES
 155         public static String img(String src, String width, String height) {
 156                 return imgBuilder(src, width, height).append("/>").toString();
 157         }
 158
 159         public static String img(String src, Point size) {
 160                 return img(src, Integer.toString(size.x), Integer.toString(size.y));
 161         }
 162
 163         public static StringBuilder imgBuilder(String src, String width,
 164                         String height) {
 165                 return new StringBuilder(64).append("<img width='").append(width)
 166                                 .append("' height='").append(height).append("' src='")
 167                                 .append(src).append("'");
 168         }
 169
 170         public static String noImg(Point size) {
 171                 ResourceManager rm = RWT.getResourceManager();
 172                 return CmsUtils.img(rm.getLocation(NO_IMAGE), size);
 173         }
 174
 175         public static String noImg() {
 176                 return noImg(NO_IMAGE_SIZE);
 177         }
 178
 179         public static Image noImage(Point size) {
 180                 ResourceManager rm = RWT.getResourceManager();
 181                 InputStream in = null;
 182                 try {
 183                         in = rm.getRegisteredContent(NO_IMAGE);
 184                         ImageData id = new ImageData(in);
 185                         ImageData scaled = id.scaledTo(size.x, size.y);
 186                         Image image = new Image(Display.getCurrent(), scaled);
 187                         return image;
 188                 } finally {
 189                         IOUtils.closeQuietly(in);
 190                 }
 191         }
 192
 193         private CmsUtils() {
 194         }
 195 }