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How do you use a custom editor with the graphiti framework?

I've been doing research on this issue for two days now with no luck, I've looked at a couple of eclipse forum questions such as: http://www.eclipse.org/forums/index.php/t/441641/ which says to
subclass DiagramEditor
override that single method and create your behavior instance>
register your editor class with the org.eclipse.ui.editors extension point
(probably for your own diagram file extension)
My ultimate goal is to provide my own behavior and the way it's done according to what I've read in the documentation is to do the above, which I did. Here's a picture of how I added the extension point and used the class (which extends DiagramEditor) that I created.
But when I start it, it does not go through my editor, is there something I'm doing wrong or something else I also need to do?

As far as I can see on your screenshot, you have not set the extension. Add the extension of your model file to the 'extensions' block on the right. Then your editor will either become the default editor, or will be available in the Open with pop-up menu.

Eclipse preference page with multiple arrays

I tried to search the internet for examples for doing that, but can not find a good one. Also I checking eclipse IDE source code, but it's a bit too big to filter out what I need for an example.
What I would need is something similar to Eclipse File Association page below.
My plan is later to replace File types list with a combo and add more values/controls per combo selection.
I would be very thankful for an example or a link to an example that does that or has a same concept with working preference store.
Thank you!

You can take a look at the Google Eclipse plugin source code. I had to achieve something similar to your needs, and inspired myself from there. It is properly designed. You can take a look at the repository right here.
In my case, I needed checkboxes instead of combos, and used a CheckboxTableViewer from the JFace library, there are plenty of example onlines (e.g: JFace snippets).
As Alex said, first, works on Eclipse preferences concept... when you got it, it will just stay some pure UI tasks.

Well, I think that it is nothing more then simple preferences page with two Lists which just represents conformity between file types and editors.
The example how to implement your own preferences page is here: Eclipse Preferences - Tutorial
If you want to have Combo - there is no problem - you just replace upper ListEditor woth your ComboFieldEditor and proceed with adding more conrols. The file associations are stored in Eclipse preferences and you can access them whenever you try to open some file to retrieve corresponding editor.

AutoIndent in Eclipse possible?

I have been wracking my brain trying to figure this out. For the first time I used jEdit the other day and I was pleasantly surprised that it auto indented my code (meaning that I'd put in the following code:
int method () {
_ //<-- and it put me here automatically
I've tried to get the same thing working with eclipse but with no success. I got into the code formatter but I don't see how to make that happen.
Is it possible to do this? Also while I'm here, is there a such thing as a eclipse plugin that will allow you to search the methods and classes of the standard java library?
Thanks

Personally all I use for this is the format options Window->preferences under Java->Code Style ->Formatter.
I once took the time to tweek how I like my code to look like when I work and exported the whole thing. After that I just code without too much bother on what it looks like. When I find the code looks messy by pressing the combination ctrl+shift+f and the whole class becomes pretty again, comments and all.
After a while it pretty much became a reflex...
code code code
ctrl-s, ctrl-b (cause I disable auto build sometimes), ctrl-shift-f
code some more etc...
Once I got used to this I never really cared how it presented the code as i was typing because I knew it would look all pretty as soon as the loop/if/switch/method etc is finished

My clean eclipse install does this by default.
Have you changed any options? Make sure the file you are editing has the .java file extension. The preference options that control the typing automations are under Java -> Editor -> Typing in the Window -> Preferences menu.
Also, I find that the auto-indenting, and most of the other auto-complete functions of eclipse do not function well if the file I am editing has errors in it which prevent compilation. Make sure that your curly-braces are matched correctly, this is the main one that I've noticed blocks auto-indent.
Regarding searching through the standard Java libraries, use the Search -> Java.. menu option, and check the JRE libraries checkbox, then search away. You can also use the Hierarchy view to see how the classes relate. Also, in the Package and Project views you can expand the JRE System Library, and then expand rt.jar which holds pretty much all the standard Java pacakges.

Eclipse has always done this for me by default.
One really cool thing about eclipse is that you can search preference pages. Just right click and go to prefrences. Go to the "Window" menu, and click "Prefrences". Then at the top of the tree view there's a text box that says "type filter text". Replace that with "indent" and it should bring up the page where the indent option is.
Make sure that eclipse recognizes your file as a java file, that you're using the Java distribution, the latest version, etc.

Iv been trying to work around the eclipse indenting and other supposed features for years, and it seems that the bottom line is this ...
It only works for the programming style of the authors, so to use it you need to modify your style to comply.
This would be OK except that the authors of eclipse have some very strange ideas about common shortcut keys.
One horrid example is the search features, eg when did Ctrl+K become "Find Next occurrence" and why doesnt F3 or n work?
That all being said I use eclipse because if you have the time to wait around while it starts up - or never close it - and you can modify everything youve learned about using an editor - why why why - then it will certainly increase your efficiency.
Please note that there is a preference setting for indenting, it can be set for a project, a workspace, or globally, but no matter how you set it eclipse will still chuck tab characters in where you dont want them.
In fact its indent crazy, like it wants to indent everything, even if its already indented.
Like I said Iv been using it for years and it STILL drives me nuts with its random behavior.

Follow these steps for Eclipse:
Select all text: ctrl+A
Correct indentation: ctrl+I

You should check:
Hidden features/tricks for Eclipse?
What is your favorite hot-key in Eclipse?

DragNDrop from Java to Windows Explorer

I want to create an application in Java that lists a directory and add drag and drop support to it for copying files from that directory to the explorer window opened and vice-versa(Windows system).
While adding support to drag and drop from windows explorer to the java application is quite easy, it kind of eludes me how to do it when the action starts from the java application and ends in explorer.
I tried searching google and SO, but to no avail.
Any pointers, directions, snippets of codes or pseudocodes will be appreciated.
So, is it possible to drag from a java application and transfer data to a drop target in a native application? If yes (it should be), can you point me in the right direction?

Yes, what you have to do is set the mime type on the transferable, and set the accepted actions (i.e. copy, move, etc) as well as the default action (it sounds like a copy action for what you are trying to do). This class is the transfer handler, which is what is used to handle DnD in Swing.

Just use the fileListFlavour DataFlavour and File drag'n drop will "just work" in both directions.
I'm sure you found the section on drag n drop in the java tutorial.

Book: Swing Hacks
Hack # 65
That's your answer :)

Questions about IntelliJ to Eclipse transition

I just started using eclipse for some personal projects and am finding the transition from IntelliJ (what I use at work) kind of annoying. I hope it's kosher to ask a few different questions in the same thread. Here goes:
1) How do I get "views" (I'm not sure if this is the term. I mean windows such as Project Explorer, Servers, Console, etc) to stay expanded and on top even after I've clicked back on the editor or another view. I'm pretty sure that right now all of these tabs are "quick views" that I have minimized and then docked, so I may not be doing this right to begin with. In IntelliJ, I would simply just pin the tab.
2) How can I open a file (for instance, an ant build.xml) without having to make it part of an eclipse project? I want the syntax highlighting and Ctrl-click ability that the IDE will give me (not to mention being able to use eclipse's built-in ant), but I don't need to associate the file with any others and so don't see the point of having to make it a part of a project.
3) Is it just me (wouldn't be surprised) or does eclipse have a bug with parsing empty html tags within the body of html tags of the same type. I've only tested this in a JSP, and it doesn't happen with JSF tags. For example: <div id="foo"><div id="bar"/></div>. Eclipse will give a warning saying the first div tag has no end tag. This is with the most recent version of eclipse for Java EE, no plugins have been installed.
4) Finally, a general question: Any best practices or resources to look at for organizing the eclipse interface and perspectives/views? What about workspaces/projects? Is there some tutorial out there that would be really informative that I could read through in less than an hour?
I appreciate any answers and tips/tricks.

First of all, please acknowledge that there are different people in the world and there are people who don't work the "Eclipse way". Even if I was paid for it (and I am), I couldn't work with IDEA. So if Eclipse rubs you the wrong way, it may not be for you. That out of the way, your answers:
In Eclipse, you open a view and let it stay where it is. In IDEA, the view changes all the time, things pop up and go away. Eclipse is static unless you specifically move things around. There are two ways to move things: You can minimize a part (a part is something which contains tabbed views). This moves the part into the closest border. Or you can maximize the current part (Ctrl-M). This pushes all other parts out of the way. Another Ctrl-M will restore the view.
This is a good place to show the difference between IDEA and Eclipse. IDEA tries to anticipate what you're doing and to be helpful. For me, this means it always gets in my way. It will start to format source as I type, things move, etc. That freaks me out. Eclipse is like a toolbox. Everything is there but you have to pick it up. A toolbox doesn't move on its own accord and it doesn't try to be smart.
Eclipse is based on the idea of a workspace. The workspace is the universe and nothing outside exists. If you need to go outside, you must first create a file or folder. In the "New File/Folder" wizard, you can open the advanced options (at the bottom) and link this resource to a real file/folder in the file system. May sound like a lot of effort but it allows Eclipse to display virtually anything in the explorer since it just shows "resources" in there, not actually files.
Smells like a bug. Please report it at https://bugs.eclipse.org/bugs/
I'm not aware of anything.
[EDIT] 3. As cletus pointed out, is not valid HTML. So that might cause the warning.

An Eclipse Perspective is a collection Views and their position. You can customize or create new perspectives, but the existing ones are good enough for a start (Java, J2EE, Java Browsing etc.). I recommend to stick with the default layout for a while until you've managed to use the quick view feature (which, personally, i find quite annoying). On small screens, i simply like to use Ctrl-M to switch the Editor to fullscreen mode and back, without the need of minimizing single views or move them around.
Yes, you can run external build scripts as well and it's called External Tool in Eclipse. Go to Run > External Tools > External Tools Configurations. Create either a new Ant-based config or a native executable (Program). The location of the build script or executable can either be workspace-relative (Browse Workspace) or absolute on the file system (Browse File System)