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[SOLVED] File editor and its margin [message #649741]

Thu, 20 January 2011 08:50

Eclipse User

Have you seen "Show print margin" (General->Editors->Text Editors) option?

It enables useful vertical line. It's a nice feature which I would like to include in my own text editor. But unfortunately for me, i cannot find in eclipse source code place where it has been done.

So my question is:
1. Do you have any idea which plugins/features should I specially take into consideration
2. Or how probably it has been implemented. Any clues?

Regards
Natalie

[Updated on: Fri, 04 February 2011 05:07] by Moderator

Re: File editor and its margin [message #649848 is a reply to message #649741]

Thu, 20 January 2011 12:57

Eclipse User

Looks like it is implemented in
org.eclipse.ui.texteditor.AbstractDecoratedTextEditor

PW

--
Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
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http://help.eclipse.org/galileo/index.jsp?topic=/org.eclipse .platform.doc.isv/guide/workbench.htm

Re: File editor and its margin [message #649950 is a reply to message #649848]

Fri, 21 January 2011 02:15

Eclipse User

On 20.01.2011 18:57, Paul Webster wrote:
> Looks like it is implemented in
> org.eclipse.ui.texteditor.AbstractDecoratedTextEditor
Correct, that editor class installs it for you. But if you have your own
editor and source viewer you can also install it through
org.eclipse.ui.texteditor.SourceViewerDecorationSupport.

Dani
>
> PW
>
>

Re: File editor and its margin [message #649962 is a reply to message #649848]

Fri, 21 January 2011 04:00

Eclipse User

Thanks! You are awesome!

I'll be back as soon as I finish my work and share my results with you.

Natalie

Re: File editor and its margin [message #652501 is a reply to message #649950]

Fri, 04 February 2011 05:06

Eclipse User

Dani Megert wrote on Fri, 21 January 2011 02:15

On 20.01.2011 18:57, Paul Webster wrote:
> Looks like it is implemented in
> org.eclipse.ui.texteditor.AbstractDecoratedTextEditor

Correct, that editor class installs it for you. But if you have your own
editor and source viewer you can also install it through
org.eclipse.ui.texteditor.SourceViewerDecorationSupport.

Absolutely true...

As I promised, I've already finished my text viewer which includes a couple of features from AbstractDecoratedTextEditor and here I'm back again to share with all of you me experience.

So:
1. Vertical margin was easy, as it is only one, ready to use class MarginPainter.

	marginPainter = new MarginPainter(myViewer);
	marginPainter.setMarginRulerColumn(charsPerLine);
	((ITextViewerExtension2) viewer).addPainter(marginPainter);

2. Custom line numbering on the left (some lines may not be counted) was also easy. I extended from class org.eclipse.jface.text.source.LineNumberRulerColumn

3. All other features that I needed (as e.g. shortcuts) was also not so hard to add.

Now my new viewer is ready to use and can be easy enabled/ disabled from the Window -> Preferences.
Eclipse RCP is really useful and well designed platform - but probably you knew that already Wink

Thanks again for all Your help
Natalie

[Updated on: Fri, 04 February 2011 05:07] by Moderator

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