util/CmsUtils.java

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