我们有一个用 Java 开发的 Lotus Notes 插件。我们支持的当前 Notes 版本是 8.5.2。
该插件向 Notes UI 添加了一个按钮。当用户单击它时，我们会向用户显示一个窗口，允许用户使用 Web 服务将当前项目添加到我们基于 Web 的应用程序中。一切正常，除非用户尝试添加新的电子邮件项目。
“单击事件”的侦听器（如果您愿意的话）需要知道当前文档，以便它可以将其字段数据传递给 Web 服务调用。为了做到这一点，已经设置了一个单独的侦听器DocumentContextService（
DocumentContextService尝试检索当前文档的 URI。这就是事情分崩离析的地方。我发现未发送的电子邮件没有 URI。此外，似乎没有办法访问该文档并保存它，以便我可以获得一个。
从理论上讲，这是设计使然。奇怪的是，我可以看到新文档有一个 DocumentKey，所以我知道它存在（作为某处的草稿），但我无法得到它。因此，在实际保存之前，似乎没有任何方法可以访问文档的数据。
除非我错了（我很可能是）。还有一个问题：有没有办法在保存新电子邮件之前获取它的基础文档，以便我可以访问它的数据（特别是它的字段）？
来自文档上下文侦听器的代码如下。再次，问题是 URI 属性总是计算为新电子邮件的空字符串。
package com.ibm.lotuslabs.context.service.internal;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Properties;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.model.IWorkbenchAdapter;
import org.eclipse.ui.views.properties.IPropertyDescriptor;
import org.eclipse.ui.views.properties.IPropertySource;
import com.ibm.lotuslabs.context.service.document.IDocumentContext;
import com.ibm.rcp.jface.launcher.IURIProvider;
import com.satuit.sys.The;
/**
* Extracts document information about about a selection object. Represents the document within the DocumentSelection.
*/
@SuppressWarnings("deprecation")
public class DocumentContext implements IDocumentContext
{
private IWorkbenchPart part;
private Object obj;
private String label;
private URI uri;
private ImageDescriptor icon;
private Properties properties;
private String id;
/**
* Initializes a new instance of the DocumentContext class.
*
* @param part The current view part.
* @param obj The currently selected object.
*/
public DocumentContext(final IWorkbenchPart part, final Object obj)
{
this.part = part;
this.obj = obj;
// Is this object a URIProvider?
final IURIProvider provider = (IURIProvider)ContextUtil.getAdapterObject(obj, IURIProvider.class);
if (provider != null)
{
this.uri = provider.getURI();
this.label = provider.getTitle();
this.icon = provider.getImageDescriptor();
}
if (this.label == null || this.icon == null)
{
// Is this object a workbench adapter?
final IWorkbenchAdapter wba = (IWorkbenchAdapter)ContextUtil.getAdapterObject(obj, IWorkbenchAdapter.class);
if (wba != null)
{
if (this.label != null)
{
this.label = wba.getLabel(obj);
}
if (this.icon != null)
{
this.icon = wba.getImageDescriptor(obj);
}
}
if (this.icon == null)
{
final Image i = part.getTitleImage();
if (i != null)
{
this.icon = ImageDescriptor.createFromImage(i);
}
}
}
// Is this object a URI?
if (this.uri == null)
{
this.uri = (URI)ContextUtil.getAdapterObject(obj, URI.class);
}
// Is this object a PropertySource?
// (A document that isn't a URI provider may provide a URI in its properties.)
final IPropertySource prop = (IPropertySource)ContextUtil.getAdapterObject(obj, IPropertySource.class);
if (prop != null)
{
this.properties = buildProperties(prop);
}
}
/**
* Gets the ID of this instance.
* @return A string containing the ID.
*/
public final String getId()
{
return this.id;
}
/**
* Gets the workbench part used to initialize this instance.
* @return
*/
public final IWorkbenchPart getPart()
{
return this.part;
}
/* (non-Javadoc)
* @see com.ibm.lotuslabs.context.service.document.IDocumentContext#getImageDescriptor()
*/
public final ImageDescriptor getImageDescriptor()
{
return this.icon;
}
/* (non-Javadoc)
* @see com.ibm.lotuslabs.context.service.document.IDocumentContext#getLabel()
*/
public final String getLabel()
{
if (this.label == null && this.part != null)
{
return this.part.getTitle();
}
return this.label;
}
/* (non-Javadoc)
* @see com.ibm.lotuslabs.context.service.document.IDocumentContext#getObject()
*/
public final Object getObject()
{
return this.obj;
}
/* (non-Javadoc)
* @see com.ibm.lotuslabs.context.service.document.IDocumentContext#getProperties()
*/
public final Properties getProperties()
{
return this.properties;
}
/* (non-Javadoc)
* @see com.ibm.lotuslabs.context.service.document.IDocumentContext#getURI()
*/
public final URI getURI()
{
return this.uri;
}
private Properties buildProperties(final IPropertySource source)
{
if (source == null)
{
return null;
}
final IPropertyDescriptor[] descs = source.getPropertyDescriptors();
if (The.Value(null).Is.NullOrEmpty(descs))
{
return null;
}
final Properties prop = new Properties();
for (int i = 0; i < descs.length; i++)
{
final Object id = descs[i].getId();
final String name = descs[i].getDisplayName();
String value = source.getPropertyValue(descs[i].getId()).toString();
if (The.Value(descs[i].getDescription()).Is.Not.Null())
{
value += "|" + source.getPropertyValue(descs[i].getDescription()).toString();
}
if (this.uri == null)
{
if (The.Value("URI").Is.OneOfIgnoreCase(id.toString(), name) ||
The.Value("URL").Is.OneOfIgnoreCase(id.toString(), name))
{
try
{
this.uri = new URI(value);
continue;
}
catch (URISyntaxException e)
{
}
}
}
prop.setProperty(name, value);
}
return prop;
}
}