我想在 SWT（实际上是 Eclipse RCP）应用程序中显示一个 RTF 文档。
我知道有一个用于显示和编辑 RTF 文本的 Swing 小部件，但它是 Swing 并且在其他平台中使用时在外观和感觉上非常陌生（更不用说据我所知它没有显示图像并且对格式化的支持有限）
其他选项是在 windows 上使用 COM 接口，但这仅适用于 windows 平台，并且需要在客户计算机上安装 ActiveX RichEdit 控件...这会使应用程序的部署非常可怕...
在 Eclipse/SWT 应用程序中显示富文档的其他选项是什么？
【问题讨论】：
您可以使用 swt.custom.StyledText。这有很多功能可以改变文本的外观。但我不认为它现在可以加载或保存 RTF。
我曾经用它编写了一个 HTML 编辑器，但它非常困难，因为与 HTML/RTF 的工作方式相比，为部分文本添加样式的 StyledText 模型是如此陌生。
AFAIK 您可以直接从此控件打印，该控件在内部创建内容的 RTF 表示。但这并不是你所要求的。
【讨论】：
我不确定不使用 ActiveX 的方法。如果您确实朝着这个方向发展，您可能需要查看IBM Container for ActiveX Documents，它应该可以更好地集成文档。
【讨论】：
为什么不先使用 RTFEditorKit 将 RTF 文本读入 StyledDocument，然后使用 HTMLEditorKit 将 StyledDocument 写入 StringWriter？
String rtf = "whatever";
BufferedReader input = new BufferedReader(new StringReader(rtf));
RTFEditorKit rtfKit = new RTFEditorKit();
StyledDocument doc = (StyledDocument) rtfKit.createDefaultDocument();
rtfEdtrKt.read( input, doc, 0 );
input.close();
HTMLEditorKit htmlKit = new HTMLEditorKit();
StringWriter output = new StringWriter();
htmlKit.write( output, doc, 0, doc.getLength());
String html = output.toString();
然后显示HTML？
【讨论】：
您可能希望将 Swing 控件与 AWT/SWT bridge 一起使用。我用它来将 OpenOffice 嵌入到 SWT 应用程序中：
package ooswtviewer;
import java.awt.Panel;
import com.sun.star.awt.XView;
import com.sun.star.beans.Property;
import com.sun.star.beans.UnknownPropertyException;
import com.sun.star.beans.XPropertySet;
import com.sun.star.comp.beans.Frame;
import com.sun.star.comp.beans.NoConnectionException;
import com.sun.star.comp.beans.OOoBean;
import com.sun.star.comp.beans.OfficeDocument;
import com.sun.star.drawing.XDrawView;
import com.sun.star.frame.XController;
import com.sun.star.frame.XDesktop;
import com.sun.star.frame.XFrame;
import com.sun.star.frame.XFramesSupplier;
import com.sun.star.frame.XLayoutManager;
import com.sun.star.frame.XModel;
import com.sun.star.lang.WrappedTargetException;
import com.sun.star.ui.XUIElement;
import com.sun.star.uno.Any;
import com.sun.star.uno.UnoRuntime;
import com.sun.star.uno.XInterface;
import com.sun.star.view.XViewSettingsSupplier;
/**
* Code based on example from http://www.eclipsezone.com/eclipse/forums/t48966.html
*
* @author Aaron digulla
*/
public class OOoSwtViewer extends Panel
{
private static final String RESOURCE_TOOLBAR_TEXTOBJECTBAR = "private:resource/toolbar/textobjectbar";
private static final String RESOURCE_TOOLBAR_STANDARDBAR = "private:resource/toolbar/standardbar";
private static final String RESOURCE_MENUBAR = "private:resource/menubar/menubar";
private static final long serialVersionUID = -1408623115735065822L;
private OOoBean aBean;
public OOoSwtViewer()
{
super();
aBean = new OOoBean();
setLayout(new java.awt.BorderLayout());
add(aBean, java.awt.BorderLayout.CENTER);
aBean.setAllBarsVisible (false);
}
public XPropertySet getXPropertySet ()
{
return getXPropertySet (getFrame ());
}
public XPropertySet getXPropertySet (Object o)
{
return (XPropertySet)UnoRuntime.queryInterface (XPropertySet.class, o);
}
public Frame getFrame ()
{
try
{
return aBean.getFrame ();
}
catch (NoConnectionException e)
{
throw new OOException ("Error getting frame from bean", e);
}
}
public XLayoutManager getXLayoutManager ()
{
try
{
return (XLayoutManager)UnoRuntime.queryInterface (XLayoutManager.class, getXPropertySet ().getPropertyValue ("LayoutManager"));
}
catch (Exception e)
{
throw new OOException ("Error getting LayoutManager from bean's properties", e);
}
}
public void setMenuBarVisible (boolean visible)
{
if (visible)
getXLayoutManager ().showElement (RESOURCE_MENUBAR);
else
getXLayoutManager ().hideElement (RESOURCE_MENUBAR);
}
public void setStandardBarVisible (boolean visible)
{
if (visible)
getXLayoutManager ().showElement (RESOURCE_TOOLBAR_STANDARDBAR);
else
getXLayoutManager ().hideElement (RESOURCE_TOOLBAR_STANDARDBAR);
}
public void setTextObjectBarVisible (boolean visible)
{
if (visible)
getXLayoutManager ().showElement (RESOURCE_TOOLBAR_TEXTOBJECTBAR);
else
getXLayoutManager ().hideElement (RESOURCE_TOOLBAR_TEXTOBJECTBAR);
}
private Thread loadThread;
private Exception loadException;
public void setDocument(final String url)
{
loadThread = new Thread () {
public void run() {
try
{
aBean.loadFromURL(url, null);
aBean.aquireSystemWindow();
setTextObjectBarVisible (false);
// for (XUIElement e: getXLayoutManager ().getElements ())
// {
// XInterface i = (XInterface)e.getRealInterface ();
// System.out.println (e);
// System.out.println (i);
// printProperties (getXPropertySet (e));
// }
/*
System.out.println ("frame:");
printProperties (getXPropertySet ());
frame:
Title=test - OpenOffice.org Writer
IndicatorInterception=Any[Type[com.sun.star.task.XStatusIndicator], null]
LayoutManager=Any[Type[com.sun.star.frame.XLayoutManager], [Proxy:26506390,717ea70;msci[0];342169f1a1164ee688893a857f65b3e1,Type[com.sun.star.frame.XLayoutManager]]]
DispatchRecorderSupplier=Any[Type[com.sun.star.frame.XDispatchRecorderSupplier], null]
IsHidden=false
*/
XController controller = aBean.getDocument ().getCurrentController ();
/*
System.out.println ("controller:");
printProperties (getXPropertySet (controller));
controller:
IsConstantSpellcheck=true
IsHideSpellMarks=false
LineCount=1
PageCount=1
*/
/*
System.out.println ("layoutManager:");
printProperties (getXPropertySet (getXLayoutManager ()));
layoutManager:
AutomaticToolbars=true
HideCurrentUI=false
LockCount=0
MenuBarCloser=true
RefreshContextToolbarVisibility=false
*/
/*
System.out.println ("document:");
printProperties (getXPropertySet (aBean.getDocument ()));
OfficeDocument doc = aBean.getDocument ();
ApplyFormDesignMode=false
ApplyWorkaroundForB6375613=false
AutomaticControlFocus=false
BasicLibraries=Any[Type[com.sun.star.script.XLibraryContainer], [Proxy:14806696,73ca178;msci[0];342169f1a1164ee688893a857f65b3e1,Type[com.sun.star.script.XLibraryContainer]]]
BuildId=680$9310
CharFontCharSet=1
CharFontCharSetAsian=1
CharFontCharSetComplex=1
CharFontFamily=3
CharFontFamilyAsian=6
CharFontFamilyComplex=6
CharFontName=Times New Roman
CharFontNameAsian=Arial Unicode MS
CharFontNameComplex=Tahoma
CharFontPitch=2
CharFontPitchAsian=2
CharFontPitchComplex=2
CharFontStyleName=
CharFontStyleNameAsian=
CharFontStyleNameComplex=
CharLocale=com.sun.star.lang.Locale@fb6354
CharacterCount=20
DialogLibraries=Any[Type[com.sun.star.script.XLibraryContainer], [Proxy:3556929,73a39c0;msci[0];342169f1a1164ee688893a857f65b3e1,Type[com.sun.star.script.XLibraryContainer]]]
ForbiddenCharacters=Any[Type[com.sun.star.i18n.XForbiddenCharacters], [Proxy:11544872,7669148;msci[0];342169f1a1164ee688893a857f65b3e1,Type[com.sun.star.i18n.XForbiddenCharacters]]]
HasValidSignatures=false
HideFieldTips=false
IndexAutoMarkFileURL=
LockUpdates=false
ParagraphCount=1
RecordChanges=false
RedlineDisplayType=2
RedlineProtectionKey=[B@f593af
RuntimeUID=10
ShowChanges=true
TwoDigitYear=1930
WordCount=5
WordSeparator=()
*/
// System.out.println ("viewData:");
// printProperties (getXPropertySet (controller.getFrame ().getContainerWindow ()));
XViewSettingsSupplier settingsSupplier = (XViewSettingsSupplier)UnoRuntime.queryInterface (XViewSettingsSupplier.class, controller);
// System.out.println ("settingsSupplier:");
// printProperties (settingsSupplier.getViewSettings ());
settingsSupplier.getViewSettings ().setPropertyValue ("ShowVertRuler", Boolean.FALSE);
settingsSupplier.getViewSettings ().setPropertyValue ("ShowHoriRuler", Boolean.FALSE);
// Switch to Web Layout. This layout mode comes without gray border and the page borders automatically adujst to the frame
settingsSupplier.getViewSettings ().setPropertyValue ("ShowOnlineLayout", Boolean.TRUE);
// settingsSupplier.getViewSettings ().setPropertyValue ("ShowTextBoundaries", Boolean.TRUE);
// XView view = (XView)UnoRuntime.queryInterface (XView.class, getFrame ());
// System.out.println ("drawView="+view);
// printProperties (getXPropertySet (view));
/*
XModel model = (XModel)UnoRuntime.queryInterface (XModel.class, doc);
printProperties ("model", model);
Same as getDocument()
*/
/*
System.out.println ("Interfaces implemented by aBean.getDocument():");
for (Class c: OOoInspector.queryInterface (aBean.getDocument ()))
System.out.println (" "+c.getName ());
com.sun.star.datatransfer.XTransferable
com.sun.star.document.XDocumentInfoSupplier
com.sun.star.document.XDocumentLanguages
com.sun.star.document.XDocumentSubStorageSupplier
com.sun.star.document.XEmbeddedScripts
com.sun.star.document.XEventBroadcaster
com.sun.star.document.XEventsSupplier
com.sun.star.document.XLinkTargetSupplier
com.sun.star.document.XRedlinesSupplier
com.sun.star.document.XStorageBasedDocument
com.sun.star.document.XViewDataSupplier
com.sun.star.drawing.XDrawPageSupplier
com.sun.star.embed.XVisualObject
com.sun.star.frame.XLoadable
com.sun.star.frame.XModel
com.sun.star.frame.XModel2
com.sun.star.frame.XModule
com.sun.star.frame.XStorable
com.sun.star.frame.XStorable2
com.sun.star.script.provider.XScriptProviderSupplier
com.sun.star.style.XAutoStylesSupplier
com.sun.star.style.XStyleFamiliesSupplier
com.sun.star.text.XBookmarksSupplier
com.sun.star.text.XChapterNumberingSupplier
com.sun.star.text.XDocumentIndexesSupplier
com.sun.star.text.XEndnotesSupplier
com.sun.star.text.XFootnotesSupplier
com.sun.star.text.XLineNumberingProperties
com.sun.star.text.XNumberingRulesSupplier
com.sun.star.text.XPagePrintable
com.sun.star.text.XReferenceMarksSupplier
com.sun.star.text.XTextDocument
com.sun.star.text.XTextEmbeddedObjectsSupplier
com.sun.star.text.XTextFieldsSupplier
com.sun.star.text.XTextFramesSupplier
com.sun.star.text.XTextGraphicObjectsSupplier
com.sun.star.text.XTextSectionsSupplier
com.sun.star.text.XTextTablesSupplier
com.sun.star.ui.XUIConfigurationManagerSupplier
com.sun.star.util.XCloseable
com.sun.star.util.XCloseBroadcaster
com.sun.star.util.XLinkUpdate
com.sun.star.util.XModifiable
com.sun.star.util.XModifiable2
com.sun.star.util.XModifyBroadcaster
com.sun.star.util.XNumberFormatsSupplier
com.sun.star.util.XRefreshable
com.sun.star.util.XReplaceable
com.sun.star.util.XSearchable
com.sun.star.view.XPrintable
com.sun.star.view.XPrintJobBroadcaster
com.sun.star.view.XRenderable
com.sun.star.xforms.XFormsSupplier
*/
/*
System.out.println ("Interfaces implemented by controller:");
for (Class c: OOoInspector.queryInterface (controller))
System.out.println (" "+c.getName ());
com.sun.star.awt.XUserInputInterception
com.sun.star.datatransfer.XTransferableSupplier
com.sun.star.frame.XController
com.sun.star.frame.XControllerBorder
com.sun.star.frame.XDispatchInformationProvider
com.sun.star.frame.XDispatchProvider
com.sun.star.task.XStatusIndicatorSupplier
com.sun.star.text.XRubySelection
com.sun.star.text.XTextViewCursorSupplier
com.sun.star.ui.XContextMenuInterception
com.sun.star.view.XControlAccess
com.sun.star.view.XFormLayerAccess
com.sun.star.view.XSelectionSupplier
com.sun.star.view.XViewSettingsSupplier
*/
/*
System.out.println ("Interfaces implemented by frame:");
for (Class c: OOoInspector.queryInterface (getFrame ()))
System.out.println (" "+c.getName ());
com.sun.star.awt.XFocusListener
com.sun.star.awt.XTopWindowListener
com.sun.star.awt.XWindowListener
com.sun.star.document.XActionLockable
com.sun.star.frame.XComponentLoader
com.sun.star.frame.XDispatchInformationProvider
com.sun.star.frame.XDispatchProvider
com.sun.star.frame.XDispatchProviderInterception
com.sun.star.frame.XFrame
com.sun.star.frame.XFramesSupplier
com.sun.star.task.XStatusIndicatorFactory
com.sun.star.util.XCloseable
com.sun.star.util.XCloseBroadcaster
*/
/*
XFramesSupplier frames = OOoInspector.queryInterface (XFramesSupplier.class, getFrame ());
printProperties ("frames", frames);
for (int i=0; i<frames.getFrames ().getCount (); i++)
{
XFrame frame = (XFrame)frames.getFrames ().getByIndex (i);
printProperties ("Frame "+i, frame);
}
frames=[Proxy:16382237,6ace84c;msci[0];342169f1a1164ee688893a857f65b3e1,Type[com.sun.star.frame.XFramesSupplier]]
Title=test - OpenOffice.org Writer
IndicatorInterception=Any[Type[com.sun.star.task.XStatusIndicator], null]
LayoutManager=Any[Type[com.sun.star.frame.XLayoutManager], [Proxy:22149392,76bd794;msci[0];342169f1a1164ee688893a857f65b3e1,Type[com.sun.star.frame.XLayoutManager]]]
DispatchRecorderSupplier=Any[Type[com.sun.star.frame.XDispatchRecorderSupplier], null]
IsHidden=false
*/
XPropertySet p = getXPropertySet (getFrame ());
Any any = (Any)p.getPropertyValue ("LayoutManager");
System.out.println (any);
System.out.println (any.getClass ().getName ());
XLayoutManager layoutManager = (XLayoutManager)any.getObject ();
printProperties ("layoutManager", layoutManager);
/*
printProperties ("containerWindow", getFrame ().getContainerWindow ());
containerWindow=[Proxy:11970262,6d33e60;msci[0];342169f1a1164ee688893a857f65b3e1,Type[com.sun.star.awt.XWindow]]
null
*/
/*
printProperties ("componentWindow", getFrame ().getComponentWindow ());
componentWindow=[Proxy:25380515,8657cc4;msci[0];342169f1a1164ee688893a857f65b3e1,Type[com.sun.star.awt.XWindow]]
null
*/
}
catch (Exception e)
{
e.printStackTrace ();
}
}
};
if (1 == 1)
loadThread.start ();
else
loadThread.run ();
}
/** closes the bean viewer and tries to terminate OOo.
*/
public void terminate() throws NoConnectionException {
setVisible(false);
XDesktop xDesktop = null;
xDesktop = aBean.getOOoDesktop();
aBean.stopOOoConnection();
if (xDesktop != null)
xDesktop.terminate();
}
/** closes the bean viewer, leaves OOo running.
*/
public void close() {
setVisible(false);
aBean.stopOOoConnection();
}
public void printProperties (String name, Object obj)
{
System.out.println (name+"="+obj);
if (obj != null)
printProperties (getXPropertySet (obj));
}
public void printProperties (XPropertySet set)
{
if (set == null)
{
System.out.println ("null");
return;
}
for (Property p: set.getPropertySetInfo ().getProperties ())
{
try
{
System.out.println (p.Name+"="+set.getPropertyValue (p.Name));
}
catch (Exception e)
{
throw new OOException ("Error getting value of property "+p.Name, e);
}
}
}
}
您可以像这样使用控件：
package ooswtviewer;
import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.Panel;
import java.io.File;
import javax.swing.JRootPane;
import org.eclipse.swt.SWT;
import org.eclipse.swt.awt.SWT_AWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
/**
* Code based on example from http://www.eclipsezone.com/eclipse/forums/t48966.html
*
* @author Aaron Digulla
*/
public class OOoSwtSnippet {
public static void main(String[] args) {
OOoSwtSnippet obj = new OOoSwtSnippet ();
try
{
obj.run (args);
}
catch (Exception e)
{
e.printStackTrace ();
}
}
public void run (String[] args) throws Exception
{
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
Composite composite = new Composite(shell, SWT.NO_BACKGROUND
| SWT.EMBEDDED);
System.setProperty("sun.awt.noerasebackground", "true");
/* Create and setting up frame */
Frame frame = SWT_AWT.new_Frame(composite);
Panel panel = new Panel(new BorderLayout()) {
public void update(java.awt.Graphics g) {
paint(g);
}
};
frame.add(panel);
JRootPane root = new JRootPane();
panel.add(root);
java.awt.Container contentPane = root.getContentPane();
shell.setSize(800, 600);
final OOoSwtViewer viewer = new OOoSwtViewer();
contentPane.add(viewer);
// viewer.setDocument(NEW_WRITTER_DOCUMENT);
File document = new File ("test.odt");
String url = document.getAbsoluteFile ().toURL ().toString ();
url = "file:///" + url.substring (6);
System.out.println ("Loading "+url);
viewer.setDocument(url);
shell.setText ("OOoSwtSnippet");
shell.open();
shell.addDisposeListener(new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
try {
viewer.close();
} catch (RuntimeException exception) {
exception.printStackTrace();
}
}
});
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
OOException 是一个 RuntimeException：
package ooswtviewer;
/**
* Wrapper for all OO exceptions to keep throws clauses in check
*
* @author Aaron Digulla
*/
public class OOException extends RuntimeException
{
public OOException ()
{
super ();
}
public OOException (String message, Throwable cause)
{
super (message, cause);
}
public OOException (String message)
{
super (message);
}
public OOException (Throwable cause)
{
super (cause);
}
}
【讨论】：
实际上，我刚刚发现了另一个很有前途的小部件：
【讨论】：