Remove UI dependencies to JCR.

[lgpl/argeo-commons.git] / jcr / org.argeo.cms.jcr.ui / src / org / argeo / cms / ui / widgets / Img.java

diff --git a/jcr/org.argeo.cms.jcr.ui/src/org/argeo/cms/ui/widgets/Img.java b/jcr/org.argeo.cms.jcr.ui/src/org/argeo/cms/ui/widgets/Img.java
new file mode 100644 (file)
index 0000000..41063fa
--- /dev/null
+++ b/jcr/org.argeo.cms.jcr.ui/src/org/argeo/cms/ui/widgets/Img.java
@@ -0,0 +1,155 @@
+package org.argeo.cms.ui.widgets;
+
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+
+import org.argeo.api.cms.ux.Cms2DSize;
+import org.argeo.api.cms.ux.CmsImageManager;
+import org.argeo.cms.swt.CmsSwtUtils;
+import org.argeo.cms.ui.internal.JcrFileUploadReceiver;
+import org.argeo.cms.ui.viewers.NodePart;
+import org.argeo.cms.ui.viewers.Section;
+import org.argeo.cms.ui.viewers.SectionPart;
+import org.argeo.jcr.Jcr;
+import org.argeo.jcr.JcrException;
+import org.eclipse.rap.fileupload.FileUploadHandler;
+import org.eclipse.rap.fileupload.FileUploadListener;
+import org.eclipse.rap.fileupload.FileUploadReceiver;
+import org.eclipse.rap.rwt.service.ServerPushSession;
+import org.eclipse.rap.rwt.widgets.FileUpload;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.SelectionAdapter;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+
+/** An image within the Argeo Text framework */
+public class Img extends EditableImage implements SectionPart, NodePart {
+       private static final long serialVersionUID = 6233572783968188476L;
+
+       private final Section section;
+
+       private final CmsImageManager<Control, Node> imageManager;
+       private FileUploadHandler currentUploadHandler = null;
+       private FileUploadListener fileUploadListener;
+
+       public Img(Composite parent, int swtStyle, Node imgNode, Cms2DSize preferredImageSize) throws RepositoryException {
+               this(Section.findSection(parent), parent, swtStyle, imgNode, preferredImageSize, null);
+               setStyle(TextStyles.TEXT_IMAGE);
+       }
+
+       public Img(Composite parent, int swtStyle, Node imgNode) throws RepositoryException {
+               this(Section.findSection(parent), parent, swtStyle, imgNode, null, null);
+               setStyle(TextStyles.TEXT_IMAGE);
+       }
+
+       public Img(Composite parent, int swtStyle, Node imgNode, CmsImageManager<Control, Node> imageManager)
+                       throws RepositoryException {
+               this(Section.findSection(parent), parent, swtStyle, imgNode, null, imageManager);
+               setStyle(TextStyles.TEXT_IMAGE);
+       }
+
+       Img(Section section, Composite parent, int swtStyle, Node imgNode, Cms2DSize preferredImageSize,
+                       CmsImageManager<Control, Node> imageManager) throws RepositoryException {
+               super(parent, swtStyle, imgNode, false, preferredImageSize);
+               this.section = section;
+               this.imageManager = imageManager != null ? imageManager
+                               : (CmsImageManager<Control, Node>) CmsSwtUtils.getCmsView(section).getImageManager();
+               CmsSwtUtils.style(this, TextStyles.TEXT_IMG);
+       }
+
+       @Override
+       protected Control createControl(Composite box, String style) {
+               if (isEditing()) {
+                       try {
+                               return createImageChooser(box, style);
+                       } catch (RepositoryException e) {
+                               throw new JcrException("Cannot create image chooser", e);
+                       }
+               } else {
+                       return createLabel(box, style);
+               }
+       }
+
+       @Override
+       public synchronized void stopEditing() {
+               super.stopEditing();
+               fileUploadListener = null;
+       }
+
+       @Override
+       protected synchronized Boolean load(Control lbl) {
+               Node imgNode = getNode();
+               boolean loaded = imageManager.load(imgNode, lbl, getPreferredImageSize());
+               // getParent().layout();
+               return loaded;
+       }
+
+       protected Node getUploadFolder() {
+               return Jcr.getParent(getNode());
+       }
+
+       protected String getUploadName() {
+               Node node = getNode();
+               return Jcr.getName(node) + '[' + Jcr.getIndex(node) + ']';
+       }
+
+       protected CmsImageManager<Control, Node> getImageManager() {
+               return imageManager;
+       }
+
+       protected Control createImageChooser(Composite box, String style) throws RepositoryException {
+               JcrFileUploadReceiver receiver = new JcrFileUploadReceiver(this, getUploadFolder(), getUploadName(),
+                               imageManager);
+               if (currentUploadHandler != null)
+                       currentUploadHandler.dispose();
+               currentUploadHandler = prepareUpload(receiver);
+               final ServerPushSession pushSession = new ServerPushSession();
+               final FileUpload fileUpload = new FileUpload(box, SWT.NONE);
+               CmsSwtUtils.style(fileUpload, style);
+               fileUpload.addSelectionListener(new SelectionAdapter() {
+                       private static final long serialVersionUID = -9158471843941668562L;
+
+                       @Override
+                       public void widgetSelected(SelectionEvent e) {
+                               pushSession.start();
+                               fileUpload.submit(currentUploadHandler.getUploadUrl());
+                       }
+               });
+               return fileUpload;
+       }
+
+       protected FileUploadHandler prepareUpload(FileUploadReceiver receiver) {
+               final FileUploadHandler uploadHandler = new FileUploadHandler(receiver);
+               if (fileUploadListener != null)
+                       uploadHandler.addUploadListener(fileUploadListener);
+               return uploadHandler;
+       }
+
+       @Override
+       public Section getSection() {
+               return section;
+       }
+
+       public void setFileUploadListener(FileUploadListener fileUploadListener) {
+               this.fileUploadListener = fileUploadListener;
+               if (currentUploadHandler != null)
+                       currentUploadHandler.addUploadListener(fileUploadListener);
+       }
+
+       @Override
+       public Node getItem() throws RepositoryException {
+               return getNode();
+       }
+
+       @Override
+       public String getPartId() {
+               return getNodeId();
+       }
+
+       @Override
+       public String toString() {
+               return "Img #" + getPartId();
+       }
+
+}