Eclipse Plugin Development: multipage editor with html extension

Question

I've created a plugin from wizard "Plugin with a mutli tab Editor".

Problem: In Project Configuration if I set the File Extension field to html , the plugin not works. If I leave it mpe (pre-inserted field) or I insert another unknown file extension, then it works.

What can cause this problem and how can I activate the plugin for html files?

EDIT: Ok, I'll try to describe step by step my problem.

I create a new Plugin Project

I set project name:

...and the project properties

I create a plugin using template "multi page editor"

Now, I must choose the class names and File Extension (mpe is pre-inserted from eclipse, I leave it for now).

Ok. Eclipse generate all files and a project that works. So, if I test it:

and I create a test project with a test.mpe files

I can see 3 tabs (because 3 tabs are configured in template code) and a default icon on file name test.mpe on Project Explorer. The plugin WORKS!

Now... I close all and I repeat EXACTLY all steps, I using HTML instead of MPE , I test it and... there is no tabs and there is no icon .

Why? And How can I solve it?

Answer 1

Your editor is not set as the default, and the one you have installed is being chosen instead. See the full documentation and example at http://help.eclipse.org/juno/topic/org.eclipse.platform.doc.isv/reference/extension-points/org_eclipse_ui_editors.html?cp=2_1_1_143 .

Answer 2

The problem is what nitind said. So simple solution is right click on your created .html file and select Open with and select the editor plugin you installed to open the .html file. So then the file will be opened in your created editor, but not with the default html editor.