Clicking the lock icon in the layers editor can be tedious - especially when editing other people's files.
Shift click selecting a layer is easy enough, and shift group selecting locked layers (locked items are usually grouped together IME) is also easy enough. Not having the right layer selected should not be a problem for users that would utilize this.
Having to then move to the layers tab and click the lock icon - it is tedious - especially if the file has tens or hundreds of layers - condensing a function that takes a good 1-3 seconds down to one that takes less than a second is a win IMHO, even if it won't be used by majority of users.
I would want it to work like this:
> toggle lock/unlock.
> if uniform selection(all locked/unlocked), then toggle lock/unlock.
> if selection is mixed (some locked, some unlocked), then unlock.
Use the following shortcuts to lock and unlock layers in Photoshop CC 2014.
• Command + / (Mac) | Control + / (Win) toggles between locking and unlocking all selected layers. (Clicking on the lock icon will also unlock a layer).
• Command + Option +/ (Mac) | Control + Alt + / (Win) unlocks all layers (except the Background layer).
• In addition, there is a new menu item Layer> Lock Layers.
Specific to locking Shape layers:
• If a shape layer is locked, it now behaves properly and cannot be selected (in previous versions it could).• When a Shape layer is locked, the Shape Properties in the Properties panel will be disabled.