CmsUtils.java

   1 package org.argeo.cms.util;
   2
   3 import static org.argeo.cms.internal.kernel.KernelConstants.WEBDAV_PRIVATE;
   4 import static org.argeo.cms.internal.kernel.KernelConstants.WEBDAV_PUBLIC;
   5 import static org.argeo.jcr.ArgeoJcrConstants.ALIAS_NODE;
   6
   7 import java.io.InputStream;
   8
   9 import javax.jcr.Item;
  10 import javax.jcr.Node;
  11 import javax.jcr.Property;
  12 import javax.jcr.RepositoryException;
  13 import javax.servlet.http.HttpServletRequest;
  14
  15 import org.apache.commons.io.IOUtils;
  16 import org.apache.commons.logging.Log;
  17 import org.apache.commons.logging.LogFactory;
  18 import org.argeo.cms.CmsConstants;
  19 import org.argeo.cms.CmsException;
  20 import org.argeo.cms.CmsView;
  21 import org.argeo.cms.auth.CurrentUser;
  22 import org.argeo.eclipse.ui.specific.UiContext;
  23 import org.argeo.jcr.JcrUtils;
  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(CmsView.KEY);
  49         }
  50
  51         public static String getDataUrl(Node node, HttpServletRequest request)
  52                         throws RepositoryException {
  53                 return request.getRequestURL().append(getDataPath(node).substring(1))
  54                                 .toString();
  55         }
  56
  57         public static String getDataPath(Node node) throws RepositoryException {
  58                 if (log.isTraceEnabled())
  59                         log.trace(CurrentUser.getUsername() + " : " + node.getPath());
  60                 StringBuilder buf = new StringBuilder();
  61                 if (CurrentUser.isAnonymous())
  62                         buf.append(WEBDAV_PUBLIC);
  63                 else
  64                         buf.append(WEBDAV_PRIVATE);
  65                 // TODO convey repo alias vie repository properties
  66                 return buf.append('/').append(ALIAS_NODE).append('/')
  67                                 .append(node.getSession().getWorkspace().getName())
  68                                 .append(node.getPath()).toString();
  69         }
  70
  71         public static String getCanonicalUrl(Node node, HttpServletRequest request)
  72                         throws RepositoryException {
  73                 return request.getRequestURL().append('!').append(node.getPath())
  74                                 .toString();
  75         }
  76
  77         /** @deprecated Use rowData16px() instead. GridData should not be reused. */
  78         @Deprecated
  79         public static RowData ROW_DATA_16px = new RowData(16, 16);
  80
  81         public static GridLayout noSpaceGridLayout() {
  82                 return noSpaceGridLayout(new GridLayout());
  83         }
  84
  85         public static GridLayout noSpaceGridLayout(GridLayout layout) {
  86                 layout.horizontalSpacing = 0;
  87                 layout.verticalSpacing = 0;
  88                 layout.marginWidth = 0;
  89                 layout.marginHeight = 0;
  90                 return layout;
  91         }
  92
  93         //
  94         // GRID DATA
  95         //
  96         public static GridData fillWidth() {
  97                 return grabWidth(SWT.FILL, SWT.FILL);
  98         }
  99
 100         public static GridData fillAll() {
 101                 return new GridData(SWT.FILL, SWT.FILL, true, true);
 102         }
 103
 104         public static GridData grabWidth(int horizontalAlignment,
 105                         int verticalAlignment) {
 106                 return new GridData(horizontalAlignment, horizontalAlignment, true,
 107                                 false);
 108         }
 109
 110         public static RowData rowData16px() {
 111                 return new RowData(16, 16);
 112         }
 113
 114         /** Style widget */
 115         public static void style(Widget widget, String style) {
 116                 widget.setData(CmsConstants.STYLE, style);
 117         }
 118
 119         /** Enable markups on widget */
 120         public static void markup(Widget widget) {
 121                 widget.setData(CmsConstants.MARKUP, true);
 122         }
 123
 124         public static void setItemHeight(Table table, int height) {
 125                 table.setData(CmsConstants.ITEM_HEIGHT, height);
 126         }
 127
 128         /** @return the path or null if not instrumented */
 129         public static String getDataPath(Widget widget) {
 130                 // JCR item
 131                 Object data = widget.getData();
 132                 if (data != null && data instanceof Item) {
 133                         try {
 134                                 return ((Item) data).getPath();
 135                         } catch (RepositoryException e) {
 136                                 throw new CmsException("Cannot find data path of " + data
 137                                                 + " for " + widget);
 138                         }
 139                 }
 140
 141                 // JCR path
 142                 data = widget.getData(Property.JCR_PATH);
 143                 if (data != null)
 144                         return data.toString();
 145
 146                 return null;
 147         }
 148
 149         /** Dispose all children of a Composite */
 150         public static void clear(Composite composite) {
 151                 for (Control child : composite.getChildren())
 152                         child.dispose();
 153         }
 154
 155         //
 156         // JCR
 157         //
 158         public static Node getOrAddEmptyFile(Node parent, Enum<?> child)
 159                         throws RepositoryException {
 160                 if (has(parent, child))
 161                         return child(parent, child);
 162                 return JcrUtils.copyBytesAsFile(parent, child.name(), new byte[0]);
 163         }
 164
 165         public static Node child(Node parent, Enum<?> en)
 166                         throws RepositoryException {
 167                 return parent.getNode(en.name());
 168         }
 169
 170         public static Boolean has(Node parent, Enum<?> en)
 171                         throws RepositoryException {
 172                 return parent.hasNode(en.name());
 173         }
 174
 175         public static Node getOrAdd(Node parent, Enum<?> en)
 176                         throws RepositoryException {
 177                 return getOrAdd(parent, en, null);
 178         }
 179
 180         public static Node getOrAdd(Node parent, Enum<?> en, String primaryType)
 181                         throws RepositoryException {
 182                 if (has(parent, en))
 183                         return child(parent, en);
 184                 else if (primaryType == null)
 185                         return parent.addNode(en.name());
 186                 else
 187                         return parent.addNode(en.name(), primaryType);
 188         }
 189
 190         // IMAGES
 191         public static String img(String src, String width, String height) {
 192                 return imgBuilder(src, width, height).append("/>").toString();
 193         }
 194
 195         public static String img(String src, Point size) {
 196                 return img(src, Integer.toString(size.x), Integer.toString(size.y));
 197         }
 198
 199         public static StringBuilder imgBuilder(String src, String width,
 200                         String height) {
 201                 return new StringBuilder(64).append("<img width='").append(width)
 202                                 .append("' height='").append(height).append("' src='")
 203                                 .append(src).append("'");
 204         }
 205
 206         public static String noImg(Point size) {
 207                 ResourceManager rm = RWT.getResourceManager();
 208                 return CmsUtils.img(rm.getLocation(NO_IMAGE), size);
 209         }
 210
 211         public static String noImg() {
 212                 return noImg(NO_IMAGE_SIZE);
 213         }
 214
 215         public static Image noImage(Point size) {
 216                 ResourceManager rm = RWT.getResourceManager();
 217                 InputStream in = null;
 218                 try {
 219                         in = rm.getRegisteredContent(NO_IMAGE);
 220                         ImageData id = new ImageData(in);
 221                         ImageData scaled = id.scaledTo(size.x, size.y);
 222                         Image image = new Image(Display.getCurrent(), scaled);
 223                         return image;
 224                 } finally {
 225                         IOUtils.closeQuietly(in);
 226                 }
 227         }
 228
 229         private CmsUtils() {
 230         }
 231 }