assistance-engine/docs/developer.avapframework.com/USER_GUIDE_CodeNavigation.md

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AVAP™ Dev Studio has a high productivity code editor which, when combined
with programming language services, gives you the power of an IDE and the
speed of a text editor. In this topic, we'll first describe AVAP™ DS
Code's language intelligence features (suggestions, parameter
hints, smart code navigation) and then show the power of the core text
editor.
## Quick file navigation
The Explorer is great for navigating between files when you are exploring
a project. However, when you are working on a task, you will find yourself
quickly jumping between the same set of files. AVAP™ DS Code provides two
powerful commands to navigate in and across files with easy-to-use key
bindings.
Hold Ctrl and press Tab to view a list of all files open in an editor
group. To open one of these files, use Tab again to pick the file you want
to navigate to, then release Ctrl to open it.
Alternatively, you can use Alt+Left and Alt+Right to navigate between
files and edit locations. If you are jumping around between different
lines of the same file, these shortcuts allow you to navigate between
those locations easily.
## Breadcrumbs
The editor has a navigation bar above its contents called{' '}
Breadcrumbs
. It shows the current location and allows you to quickly navigate between
folders, files, and symbols.
Breadcrumbs always show the file path and, with the help of language
extensions, the symbol path up to the cursor position. The symbols shown
are the same as in Outline view and Go to Symbol.
Selecting a breadcrumb in the path displays a dropdown with that
level's siblings so you can quickly navigate to other folders and
files.
If the current file type has language support for symbols, you will see
the current symbol path and a dropdown of other symbols at the same level
and below.
You can turn off breadcrumbs with the View >{' '}
Show Breadcrumbs toggle or with the breadcrumbs.enabled{' '}
setting .
### Breadcrumb customization
The appearance of breadcrumbs can be customized. If you have very long
paths or are only interested in either file paths or symbols paths, you
can use the breadcrumbs.filePath and breadcrumbs.symbolPath settings. Both
support on, off, and last and they define if or what part of the path you
see. By default, breadcrumbs show file and symbol icons to the left of the
breadcrumb but you can remove the icons by setting breadcrumbs.icons to
false.
### Symbol order in Breadcrumbs
You can control how symbols are ordered in the Breadcrumbs dropdown with
the breadcrumbs.symbolSortOrder settings.
Allowed values are:
* position - position in the file (default)
* name - alphabetical order
* type - symbol type order
### Breadcrumb keyboard navigation
To interact with breadcrumbs, use the Focus Breadcrumbs {' '}
command or press Ctrl+Shift+.. It will select that last element and open a
dropdown that allows you to navigate to a sibling file or symbol. Use the
Left and Right keyboard shortcuts to go to elements before or after the
current element. When the dropdown appears, start typing - all matching
elements will be highlighted and the best match will be selected for quick
navigation.
You can also interact with breadcrumbs without the dropdown. Press
Ctrl+Shift+; to focus the last element, use Left and Right to navigate,
and use Space to reveal the element in the editor.
## Go to Definition
If a language supports it, you can
go to the definition of a symbol by pressing F12.
If you press Ctrl and hover over a symbol, a preview of the declaration
will appear:
## Go to Type Definition
Some languages also support jumping
to the type definition of a symbol by running the{' '}
Go to Type Definition command from either the editor
context menu or the Command Palette . This will take you
to the definition of the type of a symbol. The command
editor.action.goToTypeDefinition is not bound to a keyboard shortcut by
default but you can add your own custom{' '}
keybinding .
## Go to Implementation
Languages can also support jumping
to the implementation of a symbol by pressing Ctrl+F12. For an interface,
this shows all the implementors of that interface and for abstract
methods, this shows all concrete implementations of that method.
## Go to Symbol
You can navigate symbols inside a file with Ctrl+Shift+O. By typing : the
symbols will be grouped by category. Press Up or Down and navigate to the
place you want.
## Open symbol by name
Some languages support jumping to a symbol across files with Ctrl+T. Type
the first letter of a type you want to navigate to, regardless of which
file contains it, and press Enter.
## Peek
We think there's nothing worse than a big context switch when all you
want is to quickly check something. That's why we support peeked
editors. When you execute a Go to References search
(via Shift+F12), or a Peek Definition (via
Alt+F12), we embed the result inline:
You can navigate between different references in the peeked editor and
make quick edits right there. Clicking on the peeked editor filename or
double-clicking in the result list will open the reference in the outer
editor.
## Bracket matching
Matching brackets will be highlighted as soon as the cursor is near one of
them.
### Bracket Pair Colorization
Matching bracket pairs can also be colorized by setting
editor.bracketPairColorization.enabled to true.
All colors are themeable and up to six colors can be configured.
You can use workbench.colorCustomizations to override these
theme-contributed colors in your settings:
```javascript
"workbench.colorCustomizations": { `
`"editorBracketHighlight.foreground1": "#FFD700", `
`"editorBracketHighlight.foreground2": "#DA70D6", `
`"editorBracketHighlight.foreground3": "#179fff",
},
```
## Reference information
Some languages like C# support inline reference information, that is
updated live. This allows you to quickly analyze the impact of your edit
or the popularity of your specific method or property throughout your
project:
## Rename symbol
Some languages support rename symbol across files. Press F2 and then type
the new desired name and press Enter. All usages of the symbol will be
renamed, across files.
## Errors & warnings
Warnings or Errors can be generated either via{' '}
configured tasks , by rich language
services, or by linters, that constantly analyze your code in the
background. Since we love bug-free code, warnings and errors show up in
multiple places:
* In the Status Bar, there is a summary of all errors and warnings counts.
* You can click on the summary or press Ctrl+Shift+M to display the{' '} PROBLEMS panel with a list of all current errors.
* If you open a file that has errors or warnings, they will be rendered inline with the text and in the overview ruler.
## Code Action
Warnings and Errors can provide Code Actions (also known as Quick
Fixes) to help fix issues. These will be displayed in the editor in
the left margin as a lightbulb. Clicking on the lightbulb will either
display the Code Action options or perform the action.
## Inlay Hints
Some languages provide inlay hints: that is additional information about
source code that is rendered inline. This is usually used to show inferred
types. The sample below shows inlay hints that display the inferred types
of JavaScript variables and function return types.
Inlay hints can be enabled/disabled with the editor.inlayHints.enabled
setting, the default is enabled. Extensions, like TypeScript or Rust, are
needed to provide the actual inlay hint information.
## Outgoing link protection
For your protection, AVAP™ DS Code displays a prompt before opening an
outgoing website link from the editor.
You can proceed to the external website in your browser or have the
options to copy the link or cancel the request. If you choose{' '}
Configure Trusted Domains , a dropdown lets you trust the
exact URL, trust the URL domain and subdomains, or trust all domains to
disable outgoing link protection.
The option to Manage Trusted Domains , also available at
any time from the Command Palette, brings up the{' '}
Trusted Domains JSON file, where you can add, remove, or
modify trusted domains.
```javascript
// You can use the "Manage Trusted Domains" command to open this file.
// Save this file to apply the trusted domains rules.
[ ` `"\*.twitter.com"
]
```
The Trusted Domains JSON file also has comments with
examples of the supported domain formats and a list of the domains trusted
by default, such as https://*.visualstudio.com and
https://*.microsoft.com.
## Next steps
Now that you know how the editor works, time to try a few other things...
* Intro Video - Code Editing - Watch an introductory video on code editing features.
* User Interface - In case you missed a basic orientation around AVAP™ DS Code.
* Key Bindings - Learn how to modify key bindings to your preference.
* Debugging - This is where AVAP™ DS Code really shines.
## Common questions
### How can I automatically select the second entry in Quick Open instead of
the first?
With the command workbench.action.quickOpenPreviousEditor, you can have
the second entry automatically selected in Quick Open. This can be useful
if you want to select the previous entry from the list without having to
invoke another keybinding:
```javascript
[` `{
` `"key": "ctrl+p",
` `"command": "workbench.action.quickOpenPreviousEditor"
` `},
` `{
` `"key": "ctrl+p",
` `"command": "-workbench.action.quickOpen"
` `}
]
```
### How can I configure Ctrl+Tab to navigate across all editors of all groups
By default, Ctrl+Tab navigates between editors of the same editor group.
If you want to navigate across all opened editors in all groups, you can
create keyboard shortcuts for the
workbench.action.quickOpenPreviousRecentlyUsedEditor and
workbench.action.quickOpenLeastRecentlyUsedEditor commands:
```javascript
[` `{
` `"key": "ctrl+tab",
` `"command":
"workbench.action.quickOpenPreviousRecentlyUsedEditor",
` `"when": "!inEditorsPicker"
` `},
` `{
` `"key": "ctrl+shift+tab",
` `"command": "workbench.action.quickOpenLeastRecentlyUsedEditor",
` `"when": "!inEditorsPicker"
` `}
]
```
### How can I navigate between recently used editors without a picker
Here is a list of commands you can use to navigate in editors without
opening a picker: