One might encounter a video or blog post that identifies Intellij operations by keystrokes in some keymap (which is rarely identified but might be reasonably guessed). This leads to the question: is there a mechanism for mapping a given shortcut and keymap to another keymap/shortcut pair? This seems like a trivial candidate for a plugin if there is no such plugin/mechanism already. For example, a video might show a User typing Command-S on a Mac using the default keymap (for Save All) which maps to Control-X for an Emacs keymap.
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I'm new to vim and still learning it but i found the shortcuts in IntelliJ are quite easy to use.
Eg: Ctrl + b for Go to declaration, Ctrl + q Show doc
I often check docs while I'm writing code and I'd like to keep the shortcuts available in insert mode(since vim key map seems mostly work with normal mode).
I read online and saw methods about adding custom key mapping for vim. Besides that, Is there anyway that I can keep all IDE shortcuts in insert mode?
Currently each shortcut like Ctrl+B is handled by either the Vim emulation or the IDE. See the docs on how to choose the handler for a shortcut.
Feel free to file a feature request here for handling Vim commands only the normal mode.
In WebStorm I can type something like
document.gEBI
press tab key, and it'll autocomplete to
document.getElementById()
But when I do the similar thing in IntelliJ
fmt.Prl
Auto completion doesn't work (the desired result fmt.Println()) at all, it works only if all the letters match strictly in order.
Is it possible to enable this functionality in IntelliJ? I've imported all the settings from WebStorm.
These Tab key shortcuts aren't part of the auto-complete system the Jetbrains use for all their IDEs as LazyOne says, they are actually part of the template-invocation system.
The auto-complete functionality is built into the shortcut: Ctrl+Space.
I suggest looking up the template invocation for .Println() in the settings, Jetbrains documentation, or raising a ticket with Jetbrains on YouTrack for clearer documenation/control over template-invocation.
I use okular on Linux Mint.
Unfortunately the review bar which contains the annotation tools has to be manually loaded up each time okular is opened.
This is outrageously annoying if you open many hundred documents a day you need to highlight!
I neither found any option to show the review bar by default in the program's settings or via web search. I did not even found a shortcut that could be bound to a mouse key for easier opening. (The standard F6 shortcut does not do the trick for me.)
Is there any solution you can recommend?
Based on the information available on the official KDE Okular Handbook (currently at version 0.26) there is no functionality associated with this feature, so it technically can't be done by default from inside Okular.
To access the "Review" function (which includes highlighters, etc) you should press F6 or choose the Review option from the tools menu. At the moment all you can do in regards to tool configuration is change the available components of the review tool, adding or removing highlighter/marker tools. You can also configure shortcuts for the Review function, assigning an additional/alternate shortcut to open the review tool panel (Relevant to those with multimedia keys associated with their F-keys).
If the lack of this feature bugs you, you can always post a feature request to the KDE Bug Traker; Remember to search for existing requests before posting to avoid duplicates.
There are lots of useful functions of Intellij IDEA and for many of them there are keyboard shortcuts.
But remembering shortcuts may be difficult, at least for me.
Are there some consistent guiding principles by which these shortcuts were selected by designers? I believe learning such principles would be helpful to memorize shortcuts itself.
I think that the closest answer you're going to get is "it depends". Some shortcuts are obviously chosen, because the keybinding describes what the shortcut does, for example ⌘+O means open, not only in IntelliJ but in many places throughout OS X.
Some shortcuts probably don't have any kind of such semantic meaning, such as Alt+Enter and are chosen because they are very frequently used and the placement of the keys relative to each other is comfortable.
Other keyboard shortcuts with similar purpose have the same starting sequence of keys. For instance the extract refactoring shortcuts, which are as follows:
⌘+Alt+M - extract method
⌘+Alt+C - extract constant
⌘+Alt+V - extract variable
⌘+Alt+F - extract field
⌘+Alt+P - extract parameter
So in such case you only need to remember that if you want to extract something, you press ⌘+Alt and the first letter of what you want to extract.
That being said, I don't believe that the way to learning the keybindings is memorizing them, but using them. If you use one keybinding multiple times, over the time you will memorize it. You can help this process for instance by locating the action you want to perform in the menu, but instead of clicking it look at the keyboard shortcut next to it and press it. Or find the action using ⌘+Shift+A, look at the shortcut and use it.
There are even plugins, which can help you with this, for instance Key Promoter which you can install via Settings/Plugins/Browse Repositories. This plugin shows you shortcut you can use when you invoke some actions by clicking it in menu, etc. It also shows you how many times you've used this action in such a way instead of using the corresponding shortcut.
A keyboard shortcut to comment/uncomment out a piece of code is common in other programming IDE's for languages like Java, .Net. I find it a very useful technique when experimenting through trial and error to temporarily comment out and uncomment lines, words and parts of the code to find out what is and isn't working.
I cannot find any such keyboard shortcut on the Mathematica front end in version 7. I know that it is possible to comment out code by selecting the code, right mouse click and select Un/Comment from the menu that appears but this is too slow while coding.
I tried to access this using the menu key Menu on the keyboard but Mathematica frontend doesn't respond to or recognise this key unlike other applications, this could have allowed a key combination for commenting. Can someone else verify that this isn't unique to my machine and that the key isn't recognised by mathematica. I looked at this question and looked in the KeyEventTranslations.tr file but I don't think there is any way to create a shortcut to do this(?). Should I just live with it?
Any other suggestions?
(I have seen there is an Emacs version of mathematica, I have never tried Emacs or this Mma version and imagine that it would have this ability but would prefer not to go to the trouble and uncertainty of installing it. Also I would guess that the Wolfram Workbench could do this, but that may not be worth the investment just for this.)
You can install the shortcut in Mathematica 7.0.x if you are willing to edit the Mathematica system file MenuSetup.tr. You can find it in the same location as the KeyEventTranslations.tr file (i.e. in the installation under "SystemFiles/FrontEnd/TextResources/platform"). In MenuSetup.tr, locate the following line under the definition of the Edit menu:
MenuItem["Check &Balance", "Balance", MenuKey["B", Modifiers->{"Control", "Shift"}]],
Immediately below that line, insert the following:
MenuItem["Un/C&omment Selection", KernelExecute[FE`toggleComment[]], MenuKey["/", Modifiers->{"Command"}], MenuEvaluator -> Automatic, Method -> "Queued"],
The Un/Comment Selection command is now available under the Edit menu, with the keyboard shortcut Cmd-/ or Alt-/ depending on your platform -- just like in Mathematica 8 where this command comes pre-installed.
Please take as read the usual disclaimers about hacking the Mathematica installation files -- no warranty is offered :)
I do not know of any way to map this function to some shortcut involving the Menu key.
Shortcut Key, No Menu
The preceding steps mimic what Mathematica 8 does by installing a new menu item. If you prefer to leave the menus unchanged, then you can install the shortcut in KeyEventTranslations.tr instead. Add the following line:
Item[KeyEvent["/", Modifiers->{Command}], KernelExecute[ToExpression["FE`toggleComment[]"]], MenuEvaluator -> Automatic, Method -> "Queued"]
You'll need a comma on the end of that line if it is not the last item in the list.
Select the code and press one of the following:
Alt+/
Alt-E-O
Alt+E+O
Notes:
Tested only on Windows, using Mathematica 8.
On my non-US keyboard (ABNT Brazil), the shortcut Alt+/ doesn't work, instead I use Alt+E+O.
Here is code for your KeyEventTranslations.tr file that will comment out code. I am still working on the other half.
Item[KeyEvent["/", Modifiers -> {Command}],
FrontEndExecute[{
NotebookApply[FrontEnd`InputNotebook[],
"(*\[SelectionPlaceholder]*)"
]
}]
],
This binds it to Alt+/ as it is in Mathematica 8.