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

   1 package org.argeo.cms.util;
   2
   3 import java.io.InputStream;
   4 import java.net.MalformedURLException;
   5 import java.net.URL;
   6
   7 import javax.jcr.Item;
   8 import javax.jcr.Node;
   9 import javax.jcr.Property;
  10 import javax.jcr.RepositoryException;
  11 import javax.servlet.http.HttpServletRequest;
  12
  13 import org.apache.commons.io.IOUtils;
  14 import org.apache.commons.logging.Log;
  15 import org.apache.commons.logging.LogFactory;
  16 import org.argeo.cms.CmsException;
  17 import org.argeo.cms.auth.AuthConstants;
  18 import org.argeo.cms.ui.CmsConstants;
  19 import org.argeo.cms.ui.CmsView;
  20 import org.argeo.eclipse.ui.specific.UiContext;
  21 import org.argeo.jcr.JcrUtils;
  22 import org.argeo.node.NodeAuthenticated;
  23 import org.argeo.node.NodeConstants;
  24 import org.eclipse.rap.rwt.RWT;
  25 import org.eclipse.rap.rwt.service.ResourceManager;
  26 import org.eclipse.swt.SWT;
  27 import org.eclipse.swt.graphics.Image;
  28 import org.eclipse.swt.graphics.ImageData;
  29 import org.eclipse.swt.graphics.Point;
  30 import org.eclipse.swt.layout.GridData;
  31 import org.eclipse.swt.layout.GridLayout;
  32 import org.eclipse.swt.layout.RowData;
  33 import org.eclipse.swt.widgets.Composite;
  34 import org.eclipse.swt.widgets.Control;
  35 import org.eclipse.swt.widgets.Display;
  36 import org.eclipse.swt.widgets.Table;
  37 import org.eclipse.swt.widgets.Widget;
  38
  39 /** Static utilities for the CMS framework. */
  40 public class CmsUtils implements CmsConstants {
  41         private final static Log log = LogFactory.getLog(CmsUtils.class);
  42
  43         /**
  44          * The CMS view related to this display, or null if none is available from
  45          * this call.
  46          */
  47         public static CmsView getCmsView() {
  48                 return UiContext.getData(NodeAuthenticated.KEY);
  49         }
  50
  51         public static StringBuilder getServerBaseUrl(HttpServletRequest request) {
  52                 try {
  53                         URL url = new URL(request.getRequestURL().toString());
  54                         StringBuilder buf = new StringBuilder();
  55                         buf.append(url.getProtocol()).append("://").append(url.getHost());
  56                         if (url.getPort() != -1)
  57                                 buf.append(':').append(url.getPort());
  58                         return buf;
  59                 } catch (MalformedURLException e) {
  60                         throw new CmsException("Cannot extract server base URL from " + request.getRequestURL(), e);
  61                 }
  62         }
  63 //
  64         public static String getDataUrl(Node node, HttpServletRequest request) throws RepositoryException {
  65                 try {
  66                         StringBuilder buf = getServerBaseUrl(request);
  67                         buf.append(getDataPath(node));
  68                         return new URL(buf.toString()).toString();
  69                 } catch (MalformedURLException e) {
  70                         throw new CmsException("Cannot build data URL for " + node, e);
  71                 }
  72         }
  73 // FIXME
  74         private final static String PATH_DATA = "/data";
  75         private final static String WEBDAV_PUBLIC = PATH_DATA + "/public";
  76         private final static String WEBDAV_PRIVATE = PATH_DATA + "/files";
  77         public static String getDataPath(Node node) throws RepositoryException {
  78                 assert node != null;
  79                 String userId = node.getSession().getUserID();
  80                 if (log.isTraceEnabled())
  81                         log.trace(userId + " : " + node.getPath());
  82                 StringBuilder buf = new StringBuilder();
  83                 boolean isAnonymous = userId.equalsIgnoreCase(AuthConstants.ROLE_ANONYMOUS);
  84                 if (isAnonymous)
  85                         buf.append(WEBDAV_PUBLIC);
  86                 else
  87                         buf.append(WEBDAV_PRIVATE);
  88                 // TODO convey repo alias vie repository properties
  89                 return buf.append('/').append(NodeConstants.ALIAS_NODE).append('/').append(node.getSession().getWorkspace().getName())
  90                                 .append(node.getPath()).toString();
  91         }
  92 //
  93 //      public static String getCanonicalUrl(Node node, HttpServletRequest request) throws RepositoryException {
  94 //              try {
  95 //                      StringBuilder buf = getServerBaseUrl(request);
  96 //                      buf.append('/').append('!').append(node.getPath());
  97 //                      return new URL(buf.toString()).toString();
  98 //              } catch (MalformedURLException e) {
  99 //                      throw new CmsException("Cannot build data URL for " + node, e);
 100 //              }
 101 //              // return request.getRequestURL().append('!').append(node.getPath())
 102 //              // .toString();
 103 //      }
 104
 105         /** @deprecated Use rowData16px() instead. GridData should not be reused. */
 106         @Deprecated
 107         public static RowData ROW_DATA_16px = new RowData(16, 16);
 108
 109         public static GridLayout noSpaceGridLayout() {
 110                 return noSpaceGridLayout(new GridLayout());
 111         }
 112
 113         public static GridLayout noSpaceGridLayout(GridLayout layout) {
 114                 layout.horizontalSpacing = 0;
 115                 layout.verticalSpacing = 0;
 116                 layout.marginWidth = 0;
 117                 layout.marginHeight = 0;
 118                 return layout;
 119         }
 120
 121         //
 122         // GRID DATA
 123         //
 124         public static GridData fillWidth() {
 125                 return grabWidth(SWT.FILL, SWT.FILL);
 126         }
 127
 128         public static GridData fillAll() {
 129                 return new GridData(SWT.FILL, SWT.FILL, true, true);
 130         }
 131
 132         public static GridData grabWidth(int horizontalAlignment, int verticalAlignment) {
 133                 return new GridData(horizontalAlignment, horizontalAlignment, true, false);
 134         }
 135
 136         public static RowData rowData16px() {
 137                 return new RowData(16, 16);
 138         }
 139
 140         /** Style widget */
 141         public static void style(Widget widget, String style) {
 142                 widget.setData(CmsConstants.STYLE, style);
 143         }
 144
 145         /** Enable markups on widget */
 146         public static void markup(Widget widget) {
 147                 widget.setData(CmsConstants.MARKUP, true);
 148         }
 149
 150         public static void setItemHeight(Table table, int height) {
 151                 table.setData(CmsConstants.ITEM_HEIGHT, height);
 152         }
 153
 154         /** @return the path or null if not instrumented */
 155         public static String getDataPath(Widget widget) {
 156                 // JCR item
 157                 Object data = widget.getData();
 158                 if (data != null && data instanceof Item) {
 159                         try {
 160                                 return ((Item) data).getPath();
 161                         } catch (RepositoryException e) {
 162                                 throw new CmsException("Cannot find data path of " + data + " for " + widget);
 163                         }
 164                 }
 165
 166                 // JCR path
 167                 data = widget.getData(Property.JCR_PATH);
 168                 if (data != null)
 169                         return data.toString();
 170
 171                 return null;
 172         }
 173
 174         /** Dispose all children of a Composite */
 175         public static void clear(Composite composite) {
 176                 for (Control child : composite.getChildren())
 177                         child.dispose();
 178         }
 179
 180         //
 181         // JCR
 182         //
 183         public static Node getOrAddEmptyFile(Node parent, Enum<?> child) throws RepositoryException {
 184                 if (has(parent, child))
 185                         return child(parent, child);
 186                 return JcrUtils.copyBytesAsFile(parent, child.name(), new byte[0]);
 187         }
 188
 189         public static Node child(Node parent, Enum<?> en) throws RepositoryException {
 190                 return parent.getNode(en.name());
 191         }
 192
 193         public static Boolean has(Node parent, Enum<?> en) throws RepositoryException {
 194                 return parent.hasNode(en.name());
 195         }
 196
 197         public static Node getOrAdd(Node parent, Enum<?> en) throws RepositoryException {
 198                 return getOrAdd(parent, en, null);
 199         }
 200
 201         public static Node getOrAdd(Node parent, Enum<?> en, String primaryType) throws RepositoryException {
 202                 if (has(parent, en))
 203                         return child(parent, en);
 204                 else if (primaryType == null)
 205                         return parent.addNode(en.name());
 206                 else
 207                         return parent.addNode(en.name(), primaryType);
 208         }
 209
 210         // IMAGES
 211         public static String img(String src, String width, String height) {
 212                 return imgBuilder(src, width, height).append("/>").toString();
 213         }
 214
 215         public static String img(String src, Point size) {
 216                 return img(src, Integer.toString(size.x), Integer.toString(size.y));
 217         }
 218
 219         public static StringBuilder imgBuilder(String src, String width, String height) {
 220                 return new StringBuilder(64).append("<img width='").append(width).append("' height='").append(height)
 221                                 .append("' src='").append(src).append("'");
 222         }
 223
 224         public static String noImg(Point size) {
 225                 ResourceManager rm = RWT.getResourceManager();
 226                 return CmsUtils.img(rm.getLocation(NO_IMAGE), size);
 227         }
 228
 229         public static String noImg() {
 230                 return noImg(NO_IMAGE_SIZE);
 231         }
 232
 233         public static Image noImage(Point size) {
 234                 ResourceManager rm = RWT.getResourceManager();
 235                 InputStream in = null;
 236                 try {
 237                         in = rm.getRegisteredContent(NO_IMAGE);
 238                         ImageData id = new ImageData(in);
 239                         ImageData scaled = id.scaledTo(size.x, size.y);
 240                         Image image = new Image(Display.getCurrent(), scaled);
 241                         return image;
 242                 } finally {
 243                         IOUtils.closeQuietly(in);
 244                 }
 245         }
 246
 247         private CmsUtils() {
 248         }
 249 }