[news.eclipse.tools] Re: cut, copy, paste in StyledText Widget

["Veronika Irvine" <veronika_irvine@xxxxxxx>]

When you created the StyledText widget in a shell, there were no keyboard
accelerators defined on the shell so the StyledText widget was able to
provide its own keyboard accelerators.

When you created a StyledText widget within an Eclipse shell, Eclipse has
already defined keyboard acclerators for Ctrl+C, Ctrl+V etc and therefore
the StyledText widget no longer is given the chance to process them.

"kyle farnand" <kfarnand@xxxxxxxxxxxxx> wrote in message
news:b83man$d88$1@xxxxxxxxxxxxxxxx
> Thanks Knut,
>
> I have determined that StyledText widget allows CTRL-C and CTRL-V in a
> shell but not in a composite(i.e. in views and editors).  I have created
> a simple view to illustrate my point.  Here is the code (class and
> plugin.xml extension):
>
> import org.eclipse.swt.SWT;
> import org.eclipse.swt.custom.StyledText;
> import org.eclipse.swt.layout.FillLayout;
> import org.eclipse.swt.widgets.Composite;
> import org.eclipse.swt.widgets.Display;
> import org.eclipse.swt.widgets.Shell;
> import org.eclipse.ui.part.ViewPart;
>
> public class StyledTextView extends ViewPart
> {
> public void createPartControl(Composite parent)
> {
>
>
>          Display display = parent.getDisplay();
>          final Shell shell = new Shell(display);
>          shell.setLayout(new FillLayout(SWT.VERTICAL));
>
>          final StyledText styledText = new StyledText(shell, SWT.SINGLE
> | SWT.BORDER | SWT.READ_ONLY);
>          styledText.setText("StyledText widget");
>
>          shell.setSize(500, 200);
>          shell.open();
>          while (!shell.isDisposed())
>          {
>              if (!display.readAndDispatch())
>              {
>                  display.sleep();
>              }
>          }
>
>          parent.setLayout(new FillLayout(SWT.VERTICAL));
>          final StyledText styledText2 = new StyledText(parent,
> SWT.SINGLE | SWT.BORDER | SWT.READ_ONLY);
>          styledText2.setText("StyledText widget 2");
>
>      }
> public void setFocus()
> {}
> }
>
>   --- add the following to plugin.xml (change the view id and class
> values appropriately) ---
>
> <extension point="org.eclipse.ui.views">
> <category
>              name="Sample Style Text"
>              description="Sample Style Text"
>              id="com.test.SampleStyleText">
>      </category>
> <view
>    id="com.YOUR_COMPANY.eclipse.views.StyledTextView"
>    name="Sample Styled Text"
>    icon="icons/view16/sections.gif"
>    category="com.test.SampleStyleText"
> class="com.YOUR_COMPANY.eclipse.views.StyledTextView">
> </view>
> </extension>
>
>
>
> Knut Radloff wrote:
> > In the example below I can select some text in the StyledText widget and
copy the selection to the clipboard using the popup menu on
> > the StyledText widget or using Ctrl+C. Same for the regular text widget.
The text on the clipboard is printed to the console when
> > you press ctrl+c in either widget.
> > See http://bugs.eclipse.org/bugs/show_bug.cgi?id=35210 if you're
wondering why I'm testing for \u0003 to catch the Ctrl+C in the key
> > listener.
> >
> > Knut
> >
> > import org.eclipse.swt.*;
> > import org.eclipse.swt.custom.*;
> > import org.eclipse.swt.dnd.*;
> > import org.eclipse.swt.layout.*;
> > import org.eclipse.swt.widgets.*;
> >
> > public class StyledTextClipboard {
> >  public static void main(String[] args) {
> >   final Display display = new Display();
> >   final Shell shell = new Shell(display);
> >   shell.setLayout(new FillLayout(SWT.VERTICAL));
> >
> >   final StyledText styledText = new StyledText(shell, SWT.SINGLE |
SWT.BORDER | SWT.READ_ONLY);
> >   styledText.setText("StyledText widget");
> >   final Text text = new Text(shell, SWT.SINGLE | SWT.BORDER |
SWT.READ_ONLY);
> >   text.setText("Text widget");
> >   Text pasteText = new Text(shell, SWT.BORDER | SWT.MULTI);
> >   pasteText.setText("paste here");
> >
> >   Menu popupMenu = new Menu(styledText);
> >   MenuItem copyItem = new MenuItem(popupMenu, SWT.PUSH);
> >   copyItem.setText("Copy");
> >   copyItem.addListener(SWT.Selection, new Listener() {
> >    public void handleEvent(Event event) {
> >     System.out.println("popup menu copy");
> >     styledText.copy();
> >    }
> >   });
> >   styledText.setMenu(popupMenu);
> >
> >   Listener copyListener = new Listener() {
> >    public void handleEvent(Event event) {
> >     if (event.character == '\u0003') {
> >      Clipboard clipboard = new Clipboard(display);
> >      TextTransfer transfer = TextTransfer.getInstance();
> >      String text = (String) clipboard.getContents(transfer);
> >      System.out.println("clipboard contents: " + text);
> >      clipboard.dispose();
> >     }
> >    }
> >   };
> >   styledText.addListener(SWT.KeyDown, copyListener);
> >   text.addListener(SWT.KeyDown, copyListener);
> >
> >   shell.setSize(500, 200);
> >   shell.open();
> >   while (!shell.isDisposed()) {
> >    if (!display.readAndDispatch()) {
> >     display.sleep();
> >    }
> >   }
> >   display.dispose();
> >  }
> > }
> >
> > "kyle farnand" <kfarnand@xxxxxxxxxxxxx> wrote in message
news:b80q0h$6ri$1@xxxxxxxxxxxxxxxx
> >
> >>Thanks for confirmation Paul.  I am also using R2.0.2 and Win2k.
> >>
> >>Knut and/or Lynne, maybe you could post some simple sample code that you
> >>know works in your environment.  If it works on my machine, I can figure
> >>out what the difference is (between your working code and my failing
> >>code) and post the results.  If not, we will atleast know it is not a
> >>difference in code that is causing the our different results.
> >>
> >>Open to oother suggestions but this seems like a potential bug (either
> >>document related or functional) that should be tracked down.
> >>
> >>Paul T. Keyser wrote:
> >>
> >>>R2.0.2, Win2K
> >>>
> >>>I agree with Kyle Farnand who describes the problem accurately and
correctly: I see exactly the same thing (and have posted
> >
> > before
> >
> >>>about this, but the threads died).
> >>>
> >>>As far as I can tell, these are the facts (R2.0.2, Win2K):
> >>>1) Text widget: comes with an OS-supplied popupmenu in which are items
Cut/Copy/Paste (but Ctrl-C/V/X do *NOT* work); if you add
> >>>your own popupmenu (via SWT) you lose the whole OS-supplied menu; if
you then add to your own popupmenu, your own items
> >>>Cut/Copy/Paste, and hook the API for those actions, you can restore the
Cut/Copy/Paste function, but there appears to be NO way
> >
> > to
> >
> >>>get Ctrl-C/V/X to work (with or without a popupmenu).
> >>>
> >>>2) StyledText widget: comes with *NO* popupmenu; you can add your own
popupmenu (via SWT, pretty much the same as for the Text);
> >>>to your own popupmenu, you can add your own items Cut/Copy/Paste, and
hook the API for those actions, thus for the first time
> >>>obtaining the Cut/Copy/Paste function, but there appears to be NO way
to get Ctrl-C/V/X to work (with or without a popupmenu).
> >>>
> >>>Maybe what Knut and Lynne are saying is that in R2.1, the Ctrl-C/V/X
has somehow been fixed (via fixing some bug not known to
> >
> > have
> >
> >>>been connected, but nevertheless connected)?
> >>>
> >>>Paul K
> >>>
> >>>Knut Radloff wrote:
> >>>
> >>>
> >>>
> >>>>Which build and OS are you using? Copy to clipboard (using Ctrl+C)
works for me in a read-only single line Text and StyledText
> >>>>widget in R2.1
> >>>>I searched the StyledText bugs we fixed in 2.1 and didn't see anything
cut/paste related that may have caused your problem.
> >>>>
> >>>>Knut
> >>>>"kyle farnand" <kfarnand@xxxxxxxxxxxxx> wrote in message
news:b7n3jl$sh7$1@xxxxxxxxxxxxxxxx
> >>>>
> >>>>
> >>>>>Looking at the Text tab of the SWT Controls sample view and playing
> >>>>>around with all the different parameters, there were no parameters
that
> >>>>>I could set to get CTRL-C to work in either the Text or Styled Text
> >>>>>widget (including READ_ONLY).  Right Click->Copy worked with any
> >>>>>parameter settings on the Text widget but not on the StyledText
widget.
> >>>>>
> >>>>>Is this the desired functionality for the StyledText widget?
> >>>>>
> >>>>>kyle farnand wrote:
> >>>>>
> >>>>>
> >>>>>>I must be doing something wrong then.  I tried CTRL-C and paste the
> >>>>>>results into notepad and don't get anything.  I know about the API
but
> >>>>>>was hoping to get this functionality for free (which seems
possible). In
> >>>>>>the Text widget you get <right-click> menu -> copy functionality and
was
> >>>>>>hoping that would be the same in StyledText widget.
> >>>>>>
> >>>>>>Lynne Kues wrote:
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>>I do not understand what you are talking about.
> >>>>>>>
> >>>>>>>If the StyledText widget is READ_ONLY, the copy operation is
available
> >>>>>>>(select some text and press CTRL-C), but you cannot paste to or cut
> >>>>>>
> >>>>>>>from the
> >>>>>>
> >>>>>>>widget since it is readonly.  Also note that there is API in the
> >>>>>>>StyledText
> >>>>>>>widget to cut, copy and paste programatically.
> >>>>>>>
> >>>>>>>"kyle farnand" <kfarnand@xxxxxxxxxxxxx> wrote in message
> >>>>>>>news:b7mtas$n7d$1@xxxxxxxxxxxxxxxx
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>>When I use the below code, I get copy and paste for free.
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>>Text modelText = new Text(modelXMLContainer, SWT.READ_ONLY
|SWT.MULTI);
> >>>>>>>>>modelText.setText(modelString);
> >>>>>>>>
> >>>>>>>>But when I used the StyledText widget, I lose this functionality.
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>>StyledText modelText = new StyledText(modelXMLContainer,
> >>>>>>>>
> >>>>>>>>SWT.READ_ONLY);
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>>modelText.setText(modelString);
> >>>>>>>>
> >>>>>>>>An earlier post said I should get the same copy and paste
functionality
> >>>>>>>>if I use SWT.READ_ONLY in the constructor from both widgets but
that is
> >>>>>>>>not the case.
> >>>>>>>>
> >>>>>>>>Is there an easy way to get this copy and paste functionality out
of the
> >>>>>>>>StyledText widget (as in the Text widget) or do I have to
implement it
> >>>>>>>>myself?
> >>>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >
> >
>