[Gambas-user] Highlight Editor - highlighting more than 1 line

[Rolf-Werner Eilert]

Benoit Minisini schrieb:
> On vendredi 7 novembre 2008, Rolf-Werner Eilert wrote:
>> Hi folks,
>>
>> a long time ago, I mentioned this, but Benoit meant it was a matter of
>> my code :-) Since I didn't have an opportunity to check it out, I just
>> tried it again today.
>>
>> This is what I found out about the example with the web site HTML code:
>> Highlight Editor will highlight more than one line if the text contains
>> a comment embraced by <!-- --> but only if you set it to
>> Highlight.Comment and nothing else.
>>
>>  From my point of view, it shouldn't matter which property of
>> highlighting you use, it's just a choice of colors, right? So try this:
>>
>> Let the Highlight Editor run and look for the first comment line
>>
>> <!--<h3>And do it each time you download a new version !</h3>-->
>>
>> Just insert a Return somewhere within the comment. You'll see that it
>> stays gray, as it should.
>>
>> Stop the program. In the source code, there is
>>
>>        SELECT CASE iState
>>          CASE Highlight.Normal
>>            IF sCar = "<" THEN
>>              IF String.Mid$(sText, iInd, 4) = "<!--" THEN
>>                iState = Highlight.Comment
>>                iNextState = Highlight.Comment
>>              ELSE
>>
>> Now, just change the two Hightlight.Comment to something else, e. g.
>> Highlight.Breakpoint and let the program run again. As you will see, all
>> comments now appear in red. Do as before, insert a Return somewhere in
>> the comment.
>>
>> What comes out is, that it starts black ("Highlight.Normal") on the new
>> line, then interprets the following commands as usual.
>>
>> I hope this makes it somewhat clearer what I meant then. In my case,
>> there is an editor for the printing forms I've created for my programs.
>> Its format is very much like HTML, but it reacts slighty different.
>> There are commands in {} and strings within these commands in []. There
>> can be a linebreak at any point within a command structure, so there are
>> some longer definitions (for tables) which reach over several lines to
>> make them easier to read.
>>
>> Adapting the Highlight Editor to my needs was easy, but at this point it
>> fails: all new lines following within a {} start in black, and the
>> hassle only ends with the closing bracket some lines below.
>>
>> For me this is only a small issue, but anyway it's somewhat annoying not
>> to know why and what :-) So, is it a bug or a feature or am I just too
>> stupid to see the way?
>>
>> Thanks for all comments.
>>
>> Rolf
>>
> 
> I'm not sure if your highlighting algorithm is wrong or if you misunderstood 
> the Highlight class.
> 
> What I can say is: 
> 
> The Highlight event highlights only one specific line. 
> 
> Once you have highlighted the line, you must set the Highlight.State property 
> to the state of the beginning of the next line.
> 
> When you enter the highlight event, the Highlight state is set to the state of 
> the first character of the line.
> 
> This way, you can start a token on a line, and ends it on another line, as the 
> HTML highlighting routine does with "<!--" and "-->".
> 
> Regards,
> 

As far as I can see, I did understand it right, but why does this run 
only if I use Highlight.Comment, not Highlight.<Whatever> ? I do not see 
a connection here between an array of color codes and the function 
itself... Just try my experiment as described above, I guess you'll see 
what I mean :-)

Thanks a lot!

Regards

Rolf